[Qemu-devel] [PATCH 00/40] chardev: qom clean-up and split in various backend files

[Qemu-devel] [PATCH 00/40] chardev: qom clean-up and split in various backend files

[Marc-André Lureau]

Finish qom-ification by using instance finalizers and split the big
qemu-char.c file in many backend-specific units.

This is part of a larger refactoring series that I try to keep up to date here:
https://github.com/elmarco/qemu/commits/chrfe

It is based after qom-ify v2 series.

Marc-André Lureau (40):
  spice-qemu-char: convert to finalize
  baum: convert to finalize
  msmouse: convert to finalize
  mux: convert to finalize
  char-udp: convert to finalize
  char-socket: convert to finalize
  char-pty: convert to finalize
  char-ringbuf: convert to finalize
  char-parallel: convert parallel to finalize
  char-stdio: convert to finalize
  char-win-stdio: convert to finalize
  char-win: do not override chr_free
  char-win: convert to finalize
  char-fd: convert to finalize
  char: remove chr_free
  char: get rid of CharDriver
  char: rename remaining CharDriver to Chardev
  char: remove class kind field
  char: move to chardev/
  char: create chardev-obj-y
  char: make null_chr_write() the default method
  char: move null chardev to its own file
  char: move mux to its own file
  char: move ringbuf/memory to its own file
  char: rename and move to header CHR_READ_BUF_LEN
  char: remove unused READ_RETRIES
  char: move QIOChannel-related in char-io.h
  char: move fd chardev in its own file
  char: move win chardev base class in its own file
  char: move win-stdio into its own file
  char: move socket chardev to its own file
  char: move udp chardev in its own file
  char: move file chardev in its own file
  char: move stdio in its own file
  char: move console in its own file
  char: move pipe chardev in its own file
  char: move pty chardev in its own file
  char: move serial chardev to itw own file
  char: move parallel chardev in its own file
  char: headers clean-up

 chardev/char-fd.h        |   21 +
 chardev/char-io.h        |   24 +
 chardev/char-mux.h       |   40 +
 chardev/char-parallel.h  |    9 +
 chardev/char-serial.h    |   12 +
 chardev/char-win-stdio.h |    6 +
 chardev/char-win.h       |   30 +
 include/sysemu/char.h    |   69 +-
 backends/baum.c          |   11 +-
 backends/msmouse.c       |   11 +-
 backends/testdev.c       |    5 -
 chardev/char-console.c   |   30 +
 chardev/char-fd.c        |  147 ++
 chardev/char-file.c      |  116 ++
 chardev/char-io.c        |  168 ++
 chardev/char-mux.c       |  335 +++
 chardev/char-null.c      |   31 +
 chardev/char-parallel.c  |  293 +++
 chardev/char-pipe.c      |  168 ++
 chardev/char-pty.c       |  277 +++
 chardev/char-ringbuf.c   |  226 ++
 chardev/char-serial.c    |  295 +++
 chardev/char-socket.c    |  993 +++++++++
 chardev/char-stdio.c     |  141 ++
 chardev/char-udp.c       |  210 ++
 chardev/char-win-stdio.c |  243 +++
 chardev/char-win.c       |  242 +++
 chardev/char.c           | 1311 ++++++++++++
 hmp.c                    |    1 +
 monitor.c                |    1 +
 qemu-char.c              | 5169 ----------------------------------------------
 qmp.c                    |    1 +
 spice-qemu-char.c        |   21 +-
 tests/vhost-user-test.c  |    1 +
 ui/console.c             |   10 +-
 ui/gtk.c                 |    9 +-
 MAINTAINERS              |    2 +-
 Makefile                 |    3 +-
 Makefile.objs            |    4 +-
 Makefile.target          |    3 +
 chardev/Makefile.objs    |   17 +
 tests/Makefile.include   |    6 +-
 42 files changed, 5441 insertions(+), 5271 deletions(-)
 create mode 100644 chardev/char-fd.h
 create mode 100644 chardev/char-io.h
 create mode 100644 chardev/char-mux.h
 create mode 100644 chardev/char-parallel.h
 create mode 100644 chardev/char-serial.h
 create mode 100644 chardev/char-win-stdio.h
 create mode 100644 chardev/char-win.h
 create mode 100644 chardev/char-console.c
 create mode 100644 chardev/char-fd.c
 create mode 100644 chardev/char-file.c
 create mode 100644 chardev/char-io.c
 create mode 100644 chardev/char-mux.c
 create mode 100644 chardev/char-null.c
 create mode 100644 chardev/char-parallel.c
 create mode 100644 chardev/char-pipe.c
 create mode 100644 chardev/char-pty.c
 create mode 100644 chardev/char-ringbuf.c
 create mode 100644 chardev/char-serial.c
 create mode 100644 chardev/char-socket.c
 create mode 100644 chardev/char-stdio.c
 create mode 100644 chardev/char-udp.c
 create mode 100644 chardev/char-win-stdio.c
 create mode 100644 chardev/char-win.c
 create mode 100644 chardev/char.c
 delete mode 100644 qemu-char.c
 create mode 100644 chardev/Makefile.objs

-- 
2.11.0

[Qemu-devel] [PATCH 01/40] spice-qemu-char: convert to finalize

[Marc-André Lureau]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 spice-qemu-char.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/spice-qemu-char.c b/spice-qemu-char.c
index dd97c17fca..3902202a35 100644
--- a/spice-qemu-char.c
+++ b/spice-qemu-char.c
@@ -210,9 +210,9 @@ static int spice_chr_write(Chardev *chr, const uint8_t *buf, int len)
     return read_bytes;
 }
 
-static void spice_chr_free(struct Chardev *chr)
+static void char_spice_finalize(Object *obj)
 {
-    SpiceChardev *s = SPICE_CHARDEV(chr);
+    SpiceChardev *s = SPICE_CHARDEV(obj);
 
     vmc_unregister_interface(s);
     QLIST_REMOVE(s, next);
@@ -365,13 +365,13 @@ static void char_spice_class_init(ObjectClass *oc, void *data)
     cc->chr_write = spice_chr_write;
     cc->chr_add_watch = spice_chr_add_watch;
     cc->chr_accept_input = spice_chr_accept_input;
-    cc->chr_free = spice_chr_free;
 }
 
 static const TypeInfo char_spice_type_info = {
     .name = TYPE_CHARDEV_SPICE,
     .parent = TYPE_CHARDEV,
     .instance_size = sizeof(SpiceChardev),
+    .instance_finalize = char_spice_finalize,
     .class_init = char_spice_class_init,
     .abstract = true,
 };
-- 
2.11.0

[Qemu-devel] [PATCH 02/40] baum: convert to finalize

[Marc-André Lureau]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 backends/baum.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/backends/baum.c b/backends/baum.c
index 0f418ed358..39c9365024 100644
--- a/backends/baum.c
+++ b/backends/baum.c
@@ -616,9 +616,9 @@ static void baum_chr_read(void *opaque)
     }
 }
 
-static void baum_chr_free(Chardev *chr)
+static void char_braille_finalize(Object *obj)
 {
-    BaumChardev *baum = BAUM_CHARDEV(chr);
+    BaumChardev *baum = BAUM_CHARDEV(obj);
 
     timer_free(baum->cellCount_timer);
     if (baum->brlapi) {
@@ -659,13 +659,13 @@ static void char_braille_class_init(ObjectClass *oc, void *data)
     cc->open = baum_chr_open;
     cc->chr_write = baum_chr_write;
     cc->chr_accept_input = baum_chr_accept_input;
-    cc->chr_free = baum_chr_free;
 }
 
 static const TypeInfo char_braille_type_info = {
     .name = TYPE_CHARDEV_BRAILLE,
     .parent = TYPE_CHARDEV,
     .instance_size = sizeof(BaumChardev),
+    .instance_finalize = char_braille_finalize,
     .class_init = char_braille_class_init,
 };
 
-- 
2.11.0

[Qemu-devel] [PATCH 03/40] msmouse: convert to finalize

[Marc-André Lureau]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 backends/msmouse.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/backends/msmouse.c b/backends/msmouse.c
index 936a5476d5..55c344f0e1 100644
--- a/backends/msmouse.c
+++ b/backends/msmouse.c
@@ -139,9 +139,9 @@ static int msmouse_chr_write(struct Chardev *s, const uint8_t *buf, int len)
     return len;
 }
 
-static void msmouse_chr_free(struct Chardev *chr)
+static void char_msmouse_finalize(Object *obj)
 {
-    MouseChardev *mouse = MOUSE_CHARDEV(chr);
+    MouseChardev *mouse = MOUSE_CHARDEV(obj);
 
     qemu_input_handler_unregister(mouse->hs);
 }
@@ -172,13 +172,13 @@ static void char_msmouse_class_init(ObjectClass *oc, void *data)
     cc->open = msmouse_chr_open;
     cc->chr_write = msmouse_chr_write;
     cc->chr_accept_input = msmouse_chr_accept_input;
-    cc->chr_free = msmouse_chr_free;
 }
 
 static const TypeInfo char_msmouse_type_info = {
     .name = TYPE_CHARDEV_MSMOUSE,
     .parent = TYPE_CHARDEV,
     .instance_size = sizeof(MouseChardev),
+    .instance_finalize = char_msmouse_finalize,
     .class_init = char_msmouse_class_init,
 };
 
-- 
2.11.0

[Qemu-devel] [PATCH 04/40] mux: convert to finalize

[Marc-André Lureau]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 qemu-char.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/qemu-char.c b/qemu-char.c
index 947c880868..8e301af3e5 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -859,9 +859,9 @@ static GSource *mux_chr_add_watch(Chardev *s, GIOCondition cond)
     return cc->chr_add_watch(chr, cond);
 }
 
-static void mux_chr_free(struct Chardev *chr)
+static void char_mux_finalize(Object *obj)
 {
-    MuxChardev *d = MUX_CHARDEV(chr);
+    MuxChardev *d = MUX_CHARDEV(obj);
     int i;
 
     for (i = 0; i < d->mux_cnt; i++) {
@@ -4023,7 +4023,6 @@ static void char_mux_class_init(ObjectClass *oc, void *data)
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
     cc->open = qemu_chr_open_mux;
-    cc->chr_free = mux_chr_free;
     cc->chr_write = mux_chr_write;
     cc->chr_accept_input = mux_chr_accept_input;
     cc->chr_add_watch = mux_chr_add_watch;
@@ -4034,6 +4033,7 @@ static const TypeInfo char_mux_type_info = {
     .parent = TYPE_CHARDEV,
     .class_init = char_mux_class_init,
     .instance_size = sizeof(MuxChardev),
+    .instance_finalize = char_mux_finalize,
 };
 
 static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
-- 
2.11.0

[Qemu-devel] [PATCH 05/40] char-udp: convert to finalize

[Marc-André Lureau]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 qemu-char.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/qemu-char.c b/qemu-char.c
index 8e301af3e5..7e2a412954 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -2779,9 +2779,10 @@ static void udp_chr_update_read_handler(Chardev *chr,
     }
 }
 
-static void udp_chr_free(Chardev *chr)
+static void char_udp_finalize(Object *obj)
 {
-    UdpChardev *s = UDP_CHARDEV(chr);
+    Chardev *chr = CHARDEV(obj);
+    UdpChardev *s = UDP_CHARDEV(obj);
 
     remove_fd_in_watch(chr);
     if (s->ioc) {
@@ -4973,13 +4974,13 @@ static void char_udp_class_init(ObjectClass *oc, void *data)
     cc->open = qmp_chardev_open_udp;
     cc->chr_write = udp_chr_write;
     cc->chr_update_read_handler = udp_chr_update_read_handler;
-    cc->chr_free = udp_chr_free;
 }
 
 static const TypeInfo char_udp_type_info = {
     .name = TYPE_CHARDEV_UDP,
     .parent = TYPE_CHARDEV,
     .instance_size = sizeof(UdpChardev),
+    .instance_finalize = char_udp_finalize,
     .class_init = char_udp_class_init,
 };
 
-- 
2.11.0

[Qemu-devel] [PATCH 06/40] char-socket: convert to finalize

[Marc-André Lureau]

Notice that finalize() will be run after a failure to open(), so cleanup
code must be adjusted.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 qemu-char.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/qemu-char.c b/qemu-char.c
index 7e2a412954..b9f14d7070 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -3447,9 +3447,10 @@ int qemu_chr_fe_wait_connected(CharBackend *be, Error **errp)
     return qemu_chr_wait_connected(be->chr, errp);
 }
 
-static void tcp_chr_free(Chardev *chr)
+static void char_socket_finalize(Object *obj)
 {
-    SocketChardev *s = SOCKET_CHARDEV(chr);
+    Chardev *chr = CHARDEV(obj);
+    SocketChardev *s = SOCKET_CHARDEV(obj);
 
     tcp_chr_free_connection(chr);
 
@@ -4884,7 +4885,7 @@ static void qmp_chardev_open_socket(Chardev *chr,
             s->listen_ioc = sioc;
             if (is_waitconnect &&
                 qemu_chr_wait_connected(chr, errp) < 0) {
-                goto error;
+                return;
             }
             if (!s->ioc) {
                 s->listen_tag = qio_channel_add_watch(
@@ -4902,9 +4903,6 @@ error:
     if (sioc) {
         object_unref(OBJECT(sioc));
     }
-    if (s->tls_creds) {
-        object_unref(OBJECT(s->tls_creds));
-    }
 }
 
 static const CharDriver socket_driver = {
@@ -4926,13 +4924,13 @@ static void char_socket_class_init(ObjectClass *oc, void *data)
     cc->chr_add_client = tcp_chr_add_client;
     cc->chr_add_watch = tcp_chr_add_watch;
     cc->chr_update_read_handler = tcp_chr_update_read_handler;
-    cc->chr_free = tcp_chr_free;
 }
 
 static const TypeInfo char_socket_type_info = {
     .name = TYPE_CHARDEV_SOCKET,
     .parent = TYPE_CHARDEV,
     .instance_size = sizeof(SocketChardev),
+    .instance_finalize = char_socket_finalize,
     .class_init = char_socket_class_init,
 };
 
-- 
2.11.0

[Qemu-devel] [PATCH 07/40] char-pty: convert to finalize

[Marc-André Lureau]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 qemu-char.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/qemu-char.c b/qemu-char.c
index b9f14d7070..1d8a7bc732 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -1659,9 +1659,10 @@ static void pty_chr_state(Chardev *chr, int connected)
     }
 }
 
-static void pty_chr_free(struct Chardev *chr)
+static void char_pty_finalize(Object *obj)
 {
-    PtyChardev *s = PTY_CHARDEV(chr);
+    Chardev *chr = CHARDEV(obj);
+    PtyChardev *s = PTY_CHARDEV(obj);
 
     qemu_mutex_lock(&chr->chr_write_lock);
     pty_chr_state(chr, 0);
@@ -1718,13 +1719,13 @@ static void char_pty_class_init(ObjectClass *oc, void *data)
     cc->chr_write = char_pty_chr_write;
     cc->chr_update_read_handler = pty_chr_update_read_handler;
     cc->chr_add_watch = pty_chr_add_watch;
-    cc->chr_free = pty_chr_free;
 }
 
 static const TypeInfo char_pty_type_info = {
     .name = TYPE_CHARDEV_PTY,
     .parent = TYPE_CHARDEV,
     .instance_size = sizeof(PtyChardev),
+    .instance_finalize = char_pty_finalize,
     .class_init = char_pty_class_init,
 };
 
-- 
2.11.0

[Qemu-devel] [PATCH 08/40] char-ringbuf: convert to finalize

[Marc-André Lureau]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 qemu-char.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/qemu-char.c b/qemu-char.c
index 1d8a7bc732..98d4a17990 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -3548,9 +3548,9 @@ static int ringbuf_chr_read(Chardev *chr, uint8_t *buf, int len)
     return i;
 }
 
-static void ringbuf_chr_free(struct Chardev *chr)
+static void char_ringbuf_finalize(Object *obj)
 {
-    RingBufChardev *d = RINGBUF_CHARDEV(chr);
+    RingBufChardev *d = RINGBUF_CHARDEV(obj);
 
     g_free(d->cbuf);
 }
@@ -3980,7 +3980,6 @@ static void char_ringbuf_class_init(ObjectClass *oc, void *data)
 
     cc->open = qemu_chr_open_ringbuf;
     cc->chr_write = ringbuf_chr_write;
-    cc->chr_free = ringbuf_chr_free;
 }
 
 static const TypeInfo char_ringbuf_type_info = {
@@ -3988,6 +3987,7 @@ static const TypeInfo char_ringbuf_type_info = {
     .parent = TYPE_CHARDEV,
     .class_init = char_ringbuf_class_init,
     .instance_size = sizeof(RingBufChardev),
+    .instance_finalize = char_ringbuf_finalize,
 };
 
 /* Bug-compatibility: */
-- 
2.11.0

[Qemu-devel] [PATCH 09/40] char-parallel: convert parallel to finalize

[Marc-André Lureau]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 qemu-char.c | 30 +++++++++++++++++-------------
 1 file changed, 17 insertions(+), 13 deletions(-)

diff --git a/qemu-char.c b/qemu-char.c
index 98d4a17990..2579b0be31 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -2025,17 +2025,6 @@ static int pp_ioctl(Chardev *chr, int cmd, void *arg)
     return 0;
 }
 
-static void pp_free(Chardev *chr)
-{
-    ParallelChardev *drv = PARALLEL_CHARDEV(chr);
-    int fd = drv->fd;
-
-    pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
-    ioctl(fd, PPRELEASE);
-    close(fd);
-    qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
-}
-
 static void qemu_chr_open_pp_fd(Chardev *chr,
                                 int fd,
                                 bool *be_opened,
@@ -4697,18 +4686,33 @@ static void char_parallel_class_init(ObjectClass *oc, void *data)
 #if defined(__linux__)
     cc->chr_write = null_chr_write;
     cc->chr_ioctl = pp_ioctl;
-    cc->chr_free = pp_free;
 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
-    /* FIXME: no chr_free */
     cc->chr_write = null_chr_write;
     cc->chr_ioctl = pp_ioctl;
 #endif
 }
 
+static void char_parallel_finalize(Object *obj)
+{
+#if defined(__linux__)
+    Chardev *chr = CHARDEV(obj);
+    ParallelChardev *drv = PARALLEL_CHARDEV(chr);
+    int fd = drv->fd;
+
+    pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
+    ioctl(fd, PPRELEASE);
+    close(fd);
+    qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
+#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
+    /* FIXME: close fd? */
+#endif
+}
+
 static const TypeInfo char_parallel_type_info = {
     .name = TYPE_CHARDEV_PARALLEL,
     .parent = TYPE_CHARDEV,
     .instance_size = sizeof(ParallelChardev),
+    .instance_finalize = char_parallel_finalize,
     .class_init = char_parallel_class_init,
 };
 #endif
-- 
2.11.0

[Qemu-devel] [PATCH 10/40] char-stdio: convert to finalize

[Marc-André Lureau]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 qemu-char.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/qemu-char.c b/qemu-char.c
index 2579b0be31..1c79526a65 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -1422,10 +1422,10 @@ static void qemu_chr_set_echo_stdio(Chardev *chr, bool echo)
     tcsetattr (0, TCSANOW, &tty);
 }
 
-static void qemu_chr_free_stdio(struct Chardev *chr)
+static void char_stdio_finalize(Object *obj)
 {
     term_exit();
-    fd_chr_free(chr);
+    fd_chr_free(CHARDEV(chr));
 }
 
 static void qemu_chr_open_stdio(Chardev *chr,
@@ -3857,7 +3857,6 @@ static void char_stdio_class_init(ObjectClass *oc, void *data)
     cc->chr_free = win_stdio_free;
 #else
     cc->chr_set_echo = qemu_chr_set_echo_stdio;
-    cc->chr_free = qemu_chr_free_stdio;
 #endif
 }
 
@@ -3867,6 +3866,7 @@ static const TypeInfo char_stdio_type_info = {
     .parent = TYPE_CHARDEV_WIN_STDIO,
 #else
     .parent = TYPE_CHARDEV_FD,
+    .instance_finalize = char_stdio_finalize,
 #endif
     .class_init = char_stdio_class_init,
 };
-- 
2.11.0

[Qemu-devel] [PATCH 11/40] char-win-stdio: convert to finalize

[Marc-André Lureau]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 qemu-char.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/qemu-char.c b/qemu-char.c
index 1c79526a65..ad8e5e7ebf 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -2594,9 +2594,9 @@ static void qemu_chr_set_echo_win_stdio(Chardev *chr, bool echo)
     }
 }
 
-static void win_stdio_free(Chardev *chr)
+static void char_win_stdio_finalize(Object *obj)
 {
-    WinStdioChardev *stdio = WIN_STDIO_CHARDEV(chr);
+    WinStdioChardev *stdio = WIN_STDIO_CHARDEV(obj);
 
     if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
         CloseHandle(stdio->hInputReadyEvent);
@@ -2613,6 +2613,7 @@ static const TypeInfo char_win_stdio_type_info = {
     .name = TYPE_CHARDEV_WIN_STDIO,
     .parent = TYPE_CHARDEV,
     .instance_size = sizeof(WinStdioChardev),
+    .instance_finalize = char_win_stdio_finalize,
     .abstract = true,
 };
 
@@ -3854,7 +3855,6 @@ static void char_stdio_class_init(ObjectClass *oc, void *data)
 #ifdef _WIN32
     cc->chr_write = win_stdio_write;
     cc->chr_set_echo = qemu_chr_set_echo_win_stdio;
-    cc->chr_free = win_stdio_free;
 #else
     cc->chr_set_echo = qemu_chr_set_echo_stdio;
 #endif
-- 
2.11.0

[Qemu-devel] [PATCH 12/40] char-win: do not override chr_free

[Marc-André Lureau]

For some unclear reason to me, char-file does not have chr_free on
win32. Since we want to switch to instance finalizer instead of class
chr_free, we should be able to run the base WinChardev class finalizer
in any case. Use a boolean to skip free to ease the transition to
instance finalizer.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 qemu-char.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/qemu-char.c b/qemu-char.c
index ad8e5e7ebf..1954dec9b8 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -2122,6 +2122,8 @@ typedef struct {
 
     /* Protected by the Chardev chr_write_lock.  */
     OVERLAPPED osend;
+    /* FIXME: file/console do not finalize */
+    BOOL skip_free;
 } WinChardev;
 
 #define TYPE_CHARDEV_WIN "chardev-win"
@@ -2152,6 +2154,10 @@ static void win_chr_free(Chardev *chr)
 {
     WinChardev *s = WIN_CHARDEV(chr);
 
+    if (s->skip_free) {
+        return;
+    }
+
     if (s->hsend) {
         CloseHandle(s->hsend);
         s->hsend = NULL;
@@ -2432,6 +2438,7 @@ static void qemu_chr_open_win_file(Chardev *chr, HANDLE fd_out)
 {
     WinChardev *s = WIN_CHARDEV(chr);
 
+    s->skip_free = true;
     s->hcom = fd_out;
 }
 
@@ -2468,7 +2475,6 @@ static void char_console_class_init(ObjectClass *oc, void *data)
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
     cc->open = qemu_chr_open_win_con;
-    cc->chr_free = NULL;
 }
 
 static const TypeInfo char_console_type_info = {
@@ -4729,10 +4735,6 @@ static void char_file_class_init(ObjectClass *oc, void *data)
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
     cc->open = qmp_chardev_open_file;
-#ifdef _WIN32
-    /* FIXME: no chr_free */
-    cc->chr_free = NULL;
-#endif
 }
 
 static const TypeInfo char_file_type_info = {
-- 
2.11.0

[Qemu-devel] [PATCH 13/40] char-win: convert to finalize

[Marc-André Lureau]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 qemu-char.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/qemu-char.c b/qemu-char.c
index 1954dec9b8..4cbcc29bd5 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -2150,8 +2150,9 @@ typedef struct {
 static int win_chr_poll(void *opaque);
 static int win_chr_pipe_poll(void *opaque);
 
-static void win_chr_free(Chardev *chr)
+static void char_win_finalize(Object *obj)
 {
+    Chardev *chr = CHARDEV(obj);
     WinChardev *s = WIN_CHARDEV(chr);
 
     if (s->skip_free) {
@@ -2160,15 +2161,12 @@ static void win_chr_free(Chardev *chr)
 
     if (s->hsend) {
         CloseHandle(s->hsend);
-        s->hsend = NULL;
     }
     if (s->hrecv) {
         CloseHandle(s->hrecv);
-        s->hrecv = NULL;
     }
     if (s->hcom) {
         CloseHandle(s->hcom);
-        s->hcom = NULL;
     }
     if (s->fpipe)
         qemu_del_polling_cb(win_chr_pipe_poll, chr);
@@ -2241,7 +2239,6 @@ static int win_chr_init(Chardev *chr, const char *filename, Error **errp)
     return 0;
 
  fail:
-    win_chr_free(chr);
     return -1;
 }
 
@@ -2416,7 +2413,6 @@ static int win_chr_pipe_init(Chardev *chr, const char *filename,
     return 0;
 
  fail:
-    win_chr_free(chr);
     return -1;
 }
 
@@ -2447,13 +2443,13 @@ static void char_win_class_init(ObjectClass *oc, void *data)
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
     cc->chr_write = win_chr_write;
-    cc->chr_free = win_chr_free;
 }
 
 static const TypeInfo char_win_type_info = {
     .name = TYPE_CHARDEV_WIN,
     .parent = TYPE_CHARDEV,
     .instance_size = sizeof(WinChardev),
+    .instance_finalize = char_win_finalize,
     .class_init = char_win_class_init,
     .abstract = true,
 };
-- 
2.11.0

[Qemu-devel] [PATCH 14/40] char-fd: convert to finalize

[Marc-André Lureau]

char-serial inherits from char-fd finalizer.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 qemu-char.c | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/qemu-char.c b/qemu-char.c
index 4cbcc29bd5..b106f6ef33 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -1296,9 +1296,10 @@ static void fd_chr_update_read_handler(Chardev *chr,
     }
 }
 
-static void fd_chr_free(struct Chardev *chr)
+static void char_fd_finalize(Object *obj)
 {
-    FDChardev *s = FD_CHARDEV(chr);
+    Chardev *chr = CHARDEV(obj);
+    FDChardev *s = FD_CHARDEV(obj);
 
     remove_fd_in_watch(chr);
     if (s->ioc_in) {
@@ -1337,13 +1338,13 @@ static void char_fd_class_init(ObjectClass *oc, void *data)
     cc->chr_add_watch = fd_chr_add_watch;
     cc->chr_write = fd_chr_write;
     cc->chr_update_read_handler = fd_chr_update_read_handler;
-    cc->chr_free = fd_chr_free;
 }
 
 static const TypeInfo char_fd_type_info = {
     .name = TYPE_CHARDEV_FD,
     .parent = TYPE_CHARDEV,
     .instance_size = sizeof(FDChardev),
+    .instance_finalize = char_fd_finalize,
     .class_init = char_fd_class_init,
     .abstract = true,
 };
@@ -1425,7 +1426,6 @@ static void qemu_chr_set_echo_stdio(Chardev *chr, bool echo)
 static void char_stdio_finalize(Object *obj)
 {
     term_exit();
-    fd_chr_free(CHARDEV(chr));
 }
 
 static void qemu_chr_open_stdio(Chardev *chr,
@@ -1913,11 +1913,6 @@ static int tty_serial_ioctl(Chardev *chr, int cmd, void *arg)
     }
     return 0;
 }
-
-static void qemu_chr_free_tty(Chardev *chr)
-{
-    fd_chr_free(chr);
-}
 #endif /* __linux__ || __sun__ */
 
 #if defined(__linux__)
@@ -4758,7 +4753,6 @@ static void char_serial_class_init(ObjectClass *oc, void *data)
     cc->open = qmp_chardev_open_serial;
 #ifndef _WIN32
     cc->chr_ioctl = tty_serial_ioctl;
-    cc->chr_free = qemu_chr_free_tty;
 #endif
 }
 
-- 
2.11.0

[Qemu-devel] [PATCH 15/40] char: remove chr_free

[Marc-André Lureau]

Now it uses Object instance_finalize instead.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 include/sysemu/char.h |  8 --------
 qemu-char.c           | 10 +---------
 2 files changed, 1 insertion(+), 17 deletions(-)

diff --git a/include/sysemu/char.h b/include/sysemu/char.h
index da0e7dd494..5e5594f305 100644
--- a/include/sysemu/char.h
+++ b/include/sysemu/char.h
@@ -184,13 +184,6 @@ Chardev *qemu_chr_new_noreplay(const char *label, const char *filename);
  */
 void qemu_chr_delete(Chardev *chr);
 
-/**
- * @qemu_chr_free:
- *
- * Destroy a character backend.
- */
-void qemu_chr_free(Chardev *chr);
-
 /**
  * @qemu_chr_fe_set_echo:
  *
@@ -496,7 +489,6 @@ typedef struct ChardevClass {
     int (*set_msgfds)(Chardev *s, int *fds, int num);
     int (*chr_add_client)(Chardev *chr, int fd);
     int (*chr_wait_connected)(Chardev *chr, Error **errp);
-    void (*chr_free)(Chardev *chr);
     void (*chr_disconnect)(Chardev *chr);
     void (*chr_accept_input)(Chardev *chr);
     void (*chr_set_echo)(Chardev *chr, bool echo);
diff --git a/qemu-char.c b/qemu-char.c
index b106f6ef33..b6415ee333 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -4369,18 +4369,10 @@ void qemu_chr_fe_disconnect(CharBackend *be)
     }
 }
 
-void qemu_chr_free(Chardev *chr)
-{
-    if (CHARDEV_GET_CLASS(chr)->chr_free) {
-        CHARDEV_GET_CLASS(chr)->chr_free(chr);
-    }
-    object_unref(OBJECT(chr));
-}
-
 void qemu_chr_delete(Chardev *chr)
 {
     QTAILQ_REMOVE(&chardevs, chr, next);
-    qemu_chr_free(chr);
+    object_unref(OBJECT(chr));
 }
 
 ChardevInfoList *qmp_query_chardev(Error **errp)
-- 
2.11.0

[Qemu-devel] [PATCH 16/40] char: get rid of CharDriver

[Marc-André Lureau]

qemu_chr_new_from_opts() is modified to not need CharDriver backend[]
array, but uses instead objectified qmp_query_chardev_backends() and
char_get_class(). The alias field is moved outside in a ChardevAlias[],
similar to QDevAlias for devices.

"kind" and "parse" are moved to ChardevClass ("kind" is to be removed
next)

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 include/sysemu/char.h |  12 +--
 backends/baum.c       |   6 +-
 backends/msmouse.c    |   6 +-
 backends/testdev.c    |   6 +-
 qemu-char.c           | 275 +++++++++++++++++++++-----------------------------
 spice-qemu-char.c     |  15 +--
 ui/console.c          |  10 +-
 ui/gtk.c              |  10 +-
 8 files changed, 128 insertions(+), 212 deletions(-)

diff --git a/include/sysemu/char.h b/include/sysemu/char.h
index 5e5594f305..2a3b887b8a 100644
--- a/include/sysemu/char.h
+++ b/include/sysemu/char.h
@@ -88,8 +88,6 @@ typedef struct CharBackend {
     int fe_open;
 } CharBackend;
 
-typedef struct CharDriver CharDriver;
-
 struct Chardev {
     Object parent_obj;
 
@@ -476,6 +474,8 @@ typedef struct ChardevClass {
     ObjectClass parent_class;
 
     bool internal; /* TODO: eventually use TYPE_USER_CREATABLE */
+    ChardevBackendKind kind;
+    void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
 
     void (*open)(Chardev *chr, ChardevBackend *backend,
                  bool *be_opened, Error **errp);
@@ -495,17 +495,9 @@ typedef struct ChardevClass {
     void (*chr_set_fe_open)(Chardev *chr, int fe_open);
 } ChardevClass;
 
-struct CharDriver {
-    ChardevBackendKind kind;
-    const char *alias;
-    void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
-};
-
 Chardev *qemu_chardev_new(const char *id, const char *typename,
                           ChardevBackend *backend, Error **errp);
 
-void register_char_driver(const CharDriver *driver);
-
 extern int term_escape_char;
 
 /* console.c */
diff --git a/backends/baum.c b/backends/baum.c
index 39c9365024..5316c8da0a 100644
--- a/backends/baum.c
+++ b/backends/baum.c
@@ -656,6 +656,7 @@ static void char_braille_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
+    cc->kind = CHARDEV_BACKEND_KIND_BRAILLE;
     cc->open = baum_chr_open;
     cc->chr_write = baum_chr_write;
     cc->chr_accept_input = baum_chr_accept_input;
@@ -671,11 +672,6 @@ static const TypeInfo char_braille_type_info = {
 
 static void register_types(void)
 {
-    static const CharDriver driver = {
-        .kind = CHARDEV_BACKEND_KIND_BRAILLE,
-    };
-
-    register_char_driver(&driver);
     type_register_static(&char_braille_type_info);
 }
 
diff --git a/backends/msmouse.c b/backends/msmouse.c
index 55c344f0e1..28689b3e29 100644
--- a/backends/msmouse.c
+++ b/backends/msmouse.c
@@ -169,6 +169,7 @@ static void char_msmouse_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
+    cc->kind = CHARDEV_BACKEND_KIND_MSMOUSE;
     cc->open = msmouse_chr_open;
     cc->chr_write = msmouse_chr_write;
     cc->chr_accept_input = msmouse_chr_accept_input;
@@ -184,11 +185,6 @@ static const TypeInfo char_msmouse_type_info = {
 
 static void register_types(void)
 {
-    static const CharDriver driver = {
-        .kind = CHARDEV_BACKEND_KIND_MSMOUSE,
-    };
-
-    register_char_driver(&driver);
     type_register_static(&char_msmouse_type_info);
 }
 
diff --git a/backends/testdev.c b/backends/testdev.c
index ea15143713..243454aaa3 100644
--- a/backends/testdev.c
+++ b/backends/testdev.c
@@ -111,6 +111,7 @@ static void char_testdev_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
+    cc->kind = CHARDEV_BACKEND_KIND_TESTDEV;
     cc->chr_write = testdev_chr_write;
 }
 
@@ -123,11 +124,6 @@ static const TypeInfo char_testdev_type_info = {
 
 static void register_types(void)
 {
-    static const CharDriver driver = {
-        .kind = CHARDEV_BACKEND_KIND_TESTDEV,
-    };
-
-    register_char_driver(&driver);
     type_register_static(&char_testdev_type_info);
 }
 
diff --git a/qemu-char.c b/qemu-char.c
index b6415ee333..c003223e48 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -560,16 +560,13 @@ static void null_chr_open(Chardev *chr,
     *be_opened = false;
 }
 
-static const CharDriver null_driver = {
-    .kind = CHARDEV_BACKEND_KIND_NULL,
-};
-
 static void char_null_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
     cc->open = null_chr_open;
     cc->chr_write = null_chr_write;
+    cc->kind = CHARDEV_BACKEND_KIND_NULL;
 }
 
 static const TypeInfo char_null_type_info = {
@@ -1707,14 +1704,11 @@ static void char_pty_open(Chardev *chr,
     *be_opened = false;
 }
 
-static const CharDriver pty_driver = {
-    .kind = CHARDEV_BACKEND_KIND_PTY,
-};
-
 static void char_pty_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
+    cc->kind = CHARDEV_BACKEND_KIND_PTY;
     cc->open = char_pty_open;
     cc->chr_write = char_pty_chr_write;
     cc->chr_update_read_handler = pty_chr_update_read_handler;
@@ -2457,14 +2451,11 @@ static void qemu_chr_open_win_con(Chardev *chr,
     qemu_chr_open_win_file(chr, GetStdHandle(STD_OUTPUT_HANDLE));
 }
 
-static const CharDriver console_driver = {
-    .kind = CHARDEV_BACKEND_KIND_CONSOLE,
-};
-
 static void char_console_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
+    cc->kind = CHARDEV_BACKEND_KIND_CONSOLE;
     cc->open = qemu_chr_open_win_con;
 }
 
@@ -3839,15 +3830,12 @@ static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
     stdio->signal = qemu_opt_get_bool(opts, "signal", true);
 }
 
-static const CharDriver stdio_driver = {
-    .kind = CHARDEV_BACKEND_KIND_STDIO,
-    .parse = qemu_chr_parse_stdio,
-};
-
 static void char_stdio_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
+    cc->kind = CHARDEV_BACKEND_KIND_STDIO;
+    cc->parse = qemu_chr_parse_stdio;
     cc->open = qemu_chr_open_stdio;
 #ifdef _WIN32
     cc->chr_write = win_stdio_write;
@@ -3917,15 +3905,12 @@ static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
     dev->device = g_strdup(device);
 }
 
-static const CharDriver pipe_driver = {
-    .kind = CHARDEV_BACKEND_KIND_PIPE,
-    .parse = qemu_chr_parse_pipe,
-};
-
 static void char_pipe_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
+    cc->kind = CHARDEV_BACKEND_KIND_PIPE;
+    cc->parse = qemu_chr_parse_pipe;
     cc->open = qemu_chr_open_pipe;
 }
 
@@ -3955,15 +3940,12 @@ static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
     }
 }
 
-static const CharDriver ringbuf_driver = {
-    .kind = CHARDEV_BACKEND_KIND_RINGBUF,
-    .parse = qemu_chr_parse_ringbuf,
-};
-
 static void char_ringbuf_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
+    cc->kind = CHARDEV_BACKEND_KIND_RINGBUF;
+    cc->parse = qemu_chr_parse_ringbuf;
     cc->open = qemu_chr_open_ringbuf;
     cc->chr_write = ringbuf_chr_write;
 }
@@ -3977,14 +3959,17 @@ static const TypeInfo char_ringbuf_type_info = {
 };
 
 /* Bug-compatibility: */
-static const CharDriver memory_driver = {
-    .kind = CHARDEV_BACKEND_KIND_MEMORY,
-    .parse = qemu_chr_parse_ringbuf,
-};
+static void char_memory_class_init(ObjectClass *oc, void *data)
+{
+    ChardevClass *cc = CHARDEV_CLASS(oc);
+
+    cc->kind = CHARDEV_BACKEND_KIND_MEMORY;
+}
 
 static const TypeInfo char_memory_type_info = {
     .name = TYPE_CHARDEV_MEMORY,
     .parent = TYPE_CHARDEV_RINGBUF,
+    .class_init = char_memory_class_init,
 };
 
 static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
@@ -4002,15 +3987,12 @@ static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
     mux->chardev = g_strdup(chardev);
 }
 
-static const CharDriver mux_driver = {
-    .kind = CHARDEV_BACKEND_KIND_MUX,
-    .parse = qemu_chr_parse_mux,
-};
-
 static void char_mux_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
+    cc->kind = CHARDEV_BACKEND_KIND_MUX;
+    cc->parse = qemu_chr_parse_mux;
     cc->open = qemu_chr_open_mux;
     cc->chr_write = mux_chr_write;
     cc->chr_accept_input = mux_chr_accept_input;
@@ -4152,18 +4134,52 @@ static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
     }
 }
 
-static const CharDriver *backends[CHARDEV_BACKEND_KIND__MAX];
-
-void register_char_driver(const CharDriver *driver)
+static const ChardevClass *char_get_class(const char *driver, Error **errp)
 {
-    backends[driver->kind] = driver;
+    ObjectClass *oc;
+    const ChardevClass *cc;
+    char *typename = g_strdup_printf("chardev-%s", driver);
+
+    oc = object_class_by_name(typename);
+    g_free(typename);
+
+    if (!object_class_dynamic_cast(oc, TYPE_CHARDEV)) {
+        error_setg(errp, "'%s' is not a valid char driver name", driver);
+        return NULL;
+    }
+
+    if (object_class_is_abstract(oc)) {
+        error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver",
+                   "abstract device type");
+        return NULL;
+    }
+
+    cc = CHARDEV_CLASS(oc);
+    if (cc->internal) {
+        error_setg(errp, "'%s' is not a valid char driver name", driver);
+        return NULL;
+    }
+
+    return cc;
 }
 
+static const struct ChardevAlias {
+    const char *typename;
+    const char *alias;
+} chardev_alias_table[] = {
+#ifdef HAVE_CHARDEV_PARPORT
+    { "parallel", "parport" },
+#endif
+#ifdef HAVE_CHARDEV_SERIAL
+    { "serial", "tty" },
+#endif
+};
+
 Chardev *qemu_chr_new_from_opts(QemuOpts *opts,
                                 Error **errp)
 {
     Error *local_err = NULL;
-    const CharDriver *cd = NULL;
+    const ChardevClass *cc;
     Chardev *chr;
     int i;
     ChardevReturn *ret = NULL;
@@ -4180,16 +4196,13 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts,
 
     if (is_help_option(name)) {
         GString *str = g_string_new("");
-        for (i = 0; i < ARRAY_SIZE(backends); i++) {
-            cd = backends[i];
-            if (cd) {
-                g_string_append_printf(str, "\n%s", ChardevBackendKind_lookup[cd->kind]);
-                if (cd->alias) {
-                    g_string_append_printf(str, "\n%s", cd->alias);
-                }
-            }
+        ChardevBackendInfoList *l, *il = qmp_query_chardev_backends(NULL);
+
+        for (l = il; l != NULL; l = l->next) {
+            g_string_append_printf(str, "\n%s", l->value->name);
         }
 
+        qapi_free_ChardevBackendInfoList(l);
         error_report("Available chardev backend types: %s", str->str);
         g_string_free(str, true);
         exit(0);
@@ -4200,18 +4213,15 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts,
         goto err;
     }
 
-    for (i = 0; i < ARRAY_SIZE(backends); i++) {
-        cd = backends[i];
-        if (!cd) {
-            continue;
-        }
-        if (g_strcmp0(ChardevBackendKind_lookup[cd->kind], name) == 0 ||
-            g_strcmp0(cd->alias, name) == 0) {
+    for (i = 0; i < ARRAY_SIZE(chardev_alias_table); i++) {
+        if (g_strcmp0(chardev_alias_table[i].alias, name) == 0) {
+            name = chardev_alias_table[i].typename;
             break;
         }
     }
-    if (i == ARRAY_SIZE(backends)) {
-        error_setg(errp, "chardev: backend \"%s\" not found", name);
+
+    cc = char_get_class(name, errp);
+    if (cc == NULL) {
         goto err;
     }
 
@@ -4222,17 +4232,17 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts,
     }
 
     chr = NULL;
-    backend->type = cd->kind;
-    if (cd->parse) {
-        cd->parse(opts, backend, &local_err);
+    backend->type = cc->kind;
+    if (cc->parse) {
+        cc->parse(opts, backend, &local_err);
         if (local_err) {
             error_propagate(errp, local_err);
             goto qapi_out;
         }
     } else {
-        ChardevCommon *cc = g_new0(ChardevCommon, 1);
-        qemu_chr_parse_common(opts, cc);
-        backend->u.null.data = cc; /* Any ChardevCommon member would work */
+        ChardevCommon *ccom = g_new0(ChardevCommon, 1);
+        qemu_chr_parse_common(opts, ccom);
+        backend->u.null.data = ccom; /* Any ChardevCommon member would work */
     }
 
     ret = qmp_chardev_add(bid ? bid : id, backend, errp);
@@ -4407,21 +4417,23 @@ qmp_prepend_backend(ChardevBackendInfoList *list, const char *name)
 ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
 {
     ChardevBackendInfoList *backend_list = NULL;
-    const CharDriver *c;
+    GSList *l, *list = object_class_get_list(TYPE_CHARDEV, false);
     int i;
 
-    for (i = 0; i < ARRAY_SIZE(backends); i++) {
-        c = backends[i];
-        if (!c) {
+    for (l = list; l; l = l->next) {
+        ObjectClass *klass = l->data;
+        assert(g_str_has_prefix(object_class_get_name(klass), "chardev-"));
+        if (CHARDEV_CLASS(klass)->internal) {
             continue;
         }
-
         backend_list = qmp_prepend_backend(backend_list,
-                                           ChardevBackendKind_lookup[c->kind]);
-        if (c->alias) {
-            backend_list = qmp_prepend_backend(backend_list, c->alias);
-        }
+                                           object_class_get_name(klass) + 8);
+    }
+    for (i = 0; i < ARRAY_SIZE(chardev_alias_table); i++) {
+        backend_list = qmp_prepend_backend(backend_list,
+                                           chardev_alias_table[i].alias);
     }
+    g_slist_free(l);
 
     return backend_list;
 }
@@ -4661,16 +4673,12 @@ static void qmp_chardev_open_parallel(Chardev *chr,
     qemu_chr_open_pp_fd(chr, fd, be_opened, errp);
 }
 
-static const CharDriver parallel_driver = {
-    .kind = CHARDEV_BACKEND_KIND_PARALLEL,
-    .alias = "parport",
-    .parse = qemu_chr_parse_parallel,
-};
-
 static void char_parallel_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
+    cc->kind = CHARDEV_BACKEND_KIND_PARALLEL;
+    cc->parse = qemu_chr_parse_parallel;
     cc->open = qmp_chardev_open_parallel;
 #if defined(__linux__)
     cc->chr_write = null_chr_write;
@@ -4708,15 +4716,12 @@ static const TypeInfo char_parallel_type_info = {
 
 #endif /* WIN32 */
 
-static const CharDriver file_driver = {
-    .kind = CHARDEV_BACKEND_KIND_FILE,
-    .parse = qemu_chr_parse_file_out,
-};
-
 static void char_file_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
+    cc->kind = CHARDEV_BACKEND_KIND_FILE;
+    cc->parse = qemu_chr_parse_file_out;
     cc->open = qmp_chardev_open_file;
 }
 
@@ -4732,16 +4737,12 @@ static const TypeInfo char_file_type_info = {
 
 #ifdef HAVE_CHARDEV_SERIAL
 
-static const CharDriver serial_driver = {
-    .kind = CHARDEV_BACKEND_KIND_SERIAL,
-    .alias = "tty",
-    .parse = qemu_chr_parse_serial,
-};
-
 static void char_serial_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
+    cc->kind = CHARDEV_BACKEND_KIND_SERIAL;
+    cc->parse = qemu_chr_parse_serial;
     cc->open = qmp_chardev_open_serial;
 #ifndef _WIN32
     cc->chr_ioctl = tty_serial_ioctl;
@@ -4894,15 +4895,12 @@ error:
     }
 }
 
-static const CharDriver socket_driver = {
-    .kind = CHARDEV_BACKEND_KIND_SOCKET,
-    .parse = qemu_chr_parse_socket,
-};
-
 static void char_socket_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
+    cc->kind = CHARDEV_BACKEND_KIND_SOCKET;
+    cc->parse = qemu_chr_parse_socket;
     cc->open = qmp_chardev_open_socket;
     cc->chr_wait_connected = tcp_chr_wait_connected;
     cc->chr_write = tcp_chr_write;
@@ -4949,15 +4947,12 @@ static void qmp_chardev_open_udp(Chardev *chr,
     *be_opened = false;
 }
 
-static const CharDriver udp_driver = {
-    .kind = CHARDEV_BACKEND_KIND_UDP,
-    .parse = qemu_chr_parse_udp,
-};
-
 static void char_udp_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
+    cc->kind = CHARDEV_BACKEND_KIND_UDP;
+    cc->parse = qemu_chr_parse_udp;
     cc->open = qmp_chardev_open_udp;
     cc->chr_write = udp_chr_write;
     cc->chr_update_read_handler = udp_chr_update_read_handler;
@@ -4983,35 +4978,6 @@ void qemu_chr_set_feature(Chardev *chr,
     return set_bit(feature, chr->features);
 }
 
-static const ChardevClass *char_get_class(const char *driver, Error **errp)
-{
-    ObjectClass *oc;
-    const ChardevClass *cc;
-    char *typename = g_strdup_printf("chardev-%s", driver);
-
-    oc = object_class_by_name(typename);
-    g_free(typename);
-
-    if (!object_class_dynamic_cast(oc, TYPE_CHARDEV)) {
-        error_setg(errp, "'%s' is not a valid char driver name", driver);
-        return NULL;
-    }
-
-    if (object_class_is_abstract(oc)) {
-        error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver",
-                   "abstract device type");
-        return NULL;
-    }
-
-    cc = CHARDEV_CLASS(oc);
-    if (cc->internal) {
-        error_setg(errp, "'%s' is not a valid char driver name", driver);
-        return NULL;
-    }
-
-    return cc;
-}
-
 Chardev *qemu_chardev_new(const char *id, const char *typename,
                           ChardevBackend *backend, Error **errp)
 {
@@ -5107,45 +5073,34 @@ void qemu_chr_cleanup(void)
 
 static void register_types(void)
 {
-    static const struct {
-        const CharDriver *driver;
-        const TypeInfo *type;
-    } chardevs[] = {
-        { &null_driver, &char_null_type_info },
-        { &socket_driver, &char_socket_type_info },
-        { &udp_driver, &char_udp_type_info },
-        { &ringbuf_driver, &char_ringbuf_type_info },
-        { &file_driver, &char_file_type_info },
-        { &stdio_driver, &char_stdio_type_info },
+    type_register_static(&char_type_info);
+#ifndef _WIN32
+    type_register_static(&char_fd_type_info);
+#else
+    type_register_static(&char_win_type_info);
+    type_register_static(&char_win_stdio_type_info);
+#endif
+    type_register_static(&char_null_type_info);
+    type_register_static(&char_socket_type_info);
+    type_register_static(&char_udp_type_info);
+    type_register_static(&char_ringbuf_type_info);
+    type_register_static(&char_file_type_info);
+    type_register_static(&char_stdio_type_info);
 #ifdef HAVE_CHARDEV_SERIAL
-        { &serial_driver, &char_serial_type_info },
+    type_register_static(&char_serial_type_info);
 #endif
 #ifdef HAVE_CHARDEV_PARPORT
-        { &parallel_driver, &char_parallel_type_info },
+    type_register_static(&char_parallel_type_info);
 #endif
 #ifdef HAVE_CHARDEV_PTY
-        { &pty_driver, &char_pty_type_info },
+    type_register_static(&char_pty_type_info);
 #endif
 #ifdef _WIN32
-        { &console_driver, &char_console_type_info },
+    type_register_static(&char_console_type_info);
 #endif
-        { &pipe_driver, &char_pipe_type_info },
-        { &mux_driver, &char_mux_type_info },
-        { &memory_driver, &char_memory_type_info }
-    };
-    int i;
-
-    type_register_static(&char_type_info);
-#ifndef _WIN32
-    type_register_static(&char_fd_type_info);
-#else
-    type_register_static(&char_win_type_info);
-    type_register_static(&char_win_stdio_type_info);
-#endif
-    for (i = 0; i < ARRAY_SIZE(chardevs); i++) {
-        type_register_static(chardevs[i].type);
-        register_char_driver(chardevs[i].driver);
-    }
+    type_register_static(&char_pipe_type_info);
+    type_register_static(&char_mux_type_info);
+    type_register_static(&char_memory_type_info);
 
     /* this must be done after machine init, since we register FEs with muxes
      * as part of realize functions like serial_isa_realizefn when -nographic
diff --git a/spice-qemu-char.c b/spice-qemu-char.c
index 3902202a35..17305830ab 100644
--- a/spice-qemu-char.c
+++ b/spice-qemu-char.c
@@ -380,6 +380,8 @@ static void char_spicevmc_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
+    cc->kind = CHARDEV_BACKEND_KIND_SPICEVMC;
+    cc->parse = qemu_chr_parse_spice_vmc;
     cc->open = qemu_chr_open_spice_vmc;
     cc->chr_set_fe_open = spice_vmc_set_fe_open;
 }
@@ -394,6 +396,8 @@ static void char_spiceport_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
+    cc->kind = CHARDEV_BACKEND_KIND_SPICEPORT;
+    cc->parse = qemu_chr_parse_spice_port;
     cc->open = qemu_chr_open_spice_port;
     cc->chr_set_fe_open = spice_port_set_fe_open;
 }
@@ -406,17 +410,6 @@ static const TypeInfo char_spiceport_type_info = {
 
 static void register_types(void)
 {
-    static const CharDriver vmc_driver = {
-        .kind = CHARDEV_BACKEND_KIND_SPICEVMC,
-        .parse = qemu_chr_parse_spice_vmc,
-    };
-    static const CharDriver port_driver = {
-        .kind = CHARDEV_BACKEND_KIND_SPICEPORT,
-        .parse = qemu_chr_parse_spice_port,
-    };
-    register_char_driver(&vmc_driver);
-    register_char_driver(&port_driver);
-
     type_register_static(&char_spice_type_info);
     type_register_static(&char_spicevmc_type_info);
     type_register_static(&char_spiceport_type_info);
diff --git a/ui/console.c b/ui/console.c
index fe03a666f7..84fcbd86fd 100644
--- a/ui/console.c
+++ b/ui/console.c
@@ -2059,8 +2059,6 @@ static void text_console_do_init(Chardev *chr, DisplayState *ds)
     qemu_chr_be_generic_open(chr);
 }
 
-static const CharDriver vc_driver;
-
 static void vc_chr_open(Chardev *chr,
                         ChardevBackend *backend,
                         bool *be_opened,
@@ -2189,6 +2187,8 @@ static void char_vc_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
+    cc->kind = CHARDEV_BACKEND_KIND_VC;
+    cc->parse = qemu_chr_parse_vc;
     cc->open = vc_chr_open;
     cc->chr_write = vc_chr_write;
     cc->chr_set_echo = vc_chr_set_echo;
@@ -2206,15 +2206,9 @@ void qemu_console_early_init(void)
     /* set the default vc driver */
     if (!object_class_by_name(TYPE_CHARDEV_VC)) {
         type_register(&char_vc_type_info);
-        register_char_driver(&vc_driver);
     }
 }
 
-static const CharDriver vc_driver = {
-    .kind = CHARDEV_BACKEND_KIND_VC,
-    .parse = qemu_chr_parse_vc,
-};
-
 static void register_types(void)
 {
     type_register_static(&qemu_console_info);
diff --git a/ui/gtk.c b/ui/gtk.c
index bdd831c268..f4542e3b86 100644
--- a/ui/gtk.c
+++ b/ui/gtk.c
@@ -1715,8 +1715,6 @@ static void gd_vc_chr_set_echo(Chardev *chr, bool echo)
 
 static int nb_vcs;
 static Chardev *vcs[MAX_VCS];
-static const CharDriver gd_vc_driver;
-
 static void gd_vc_open(Chardev *chr,
                        ChardevBackend *backend,
                        bool *be_opened,
@@ -1739,6 +1737,8 @@ static void char_gd_vc_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
+    cc->kind = CHARDEV_BACKEND_KIND_VC;
+    cc->parse = qemu_chr_parse_vc;
     cc->open = gd_vc_open;
     cc->chr_write = gd_vc_chr_write;
     cc->chr_set_echo = gd_vc_chr_set_echo;
@@ -1751,11 +1751,6 @@ static const TypeInfo char_gd_vc_type_info = {
     .class_init = char_gd_vc_class_init,
 };
 
-static const CharDriver gd_vc_driver = {
-    .kind = CHARDEV_BACKEND_KIND_VC,
-    .parse = qemu_chr_parse_vc,
-};
-
 static gboolean gd_vc_in(VteTerminal *terminal, gchar *text, guint size,
                          gpointer user_data)
 {
@@ -2353,6 +2348,5 @@ void early_gtk_display_init(int opengl)
 
 #if defined(CONFIG_VTE)
     type_register(&char_gd_vc_type_info);
-    register_char_driver(&gd_vc_driver);
 #endif
 }
-- 
2.11.0

[Qemu-devel] [PATCH 17/40] char: rename remaining CharDriver to Chardev

[Marc-André Lureau]

CharDriver no longer exists, it has been replaced with Chardev.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 include/sysemu/char.h | 40 ++++++++++++++++++++--------------------
 qemu-char.c           | 12 ++++++------
 2 files changed, 26 insertions(+), 26 deletions(-)

diff --git a/include/sysemu/char.h b/include/sysemu/char.h
index 2a3b887b8a..b4303e7b22 100644
--- a/include/sysemu/char.h
+++ b/include/sysemu/char.h
@@ -74,7 +74,7 @@ typedef enum {
     QEMU_CHAR_FEATURE_REPLAY,
 
     QEMU_CHAR_FEATURE_LAST,
-} CharDriverFeature;
+} ChardevFeature;
 
 /* This is the backend as seen by frontend, the actual backend is
  * Chardev */
@@ -141,7 +141,7 @@ Chardev *qemu_chr_new(const char *label, const char *filename);
  * @qemu_chr_fe_disconnect:
  *
  * Close a fd accpeted by character backend.
- * Without associated CharDriver, do nothing.
+ * Without associated Chardev, do nothing.
  */
 void qemu_chr_fe_disconnect(CharBackend *be);
 
@@ -156,7 +156,7 @@ void qemu_chr_cleanup(void);
  * @qemu_chr_fe_wait_connected:
  *
  * Wait for characted backend to be connected, return < 0 on error or
- * if no assicated CharDriver.
+ * if no assicated Chardev.
  */
 int qemu_chr_fe_wait_connected(CharBackend *be, Error **errp);
 
@@ -188,7 +188,7 @@ void qemu_chr_delete(Chardev *chr);
  * Ask the backend to override its normal echo setting.  This only really
  * applies to the stdio backend and is used by the QMP server such that you
  * can see what you type if you try to type QMP commands.
- * Without associated CharDriver, do nothing.
+ * Without associated Chardev, do nothing.
  *
  * @echo true to enable echo, false to disable echo
  */
@@ -199,7 +199,7 @@ void qemu_chr_fe_set_echo(CharBackend *be, bool echo);
  *
  * Set character frontend open status.  This is an indication that the
  * front end is ready (or not) to begin doing I/O.
- * Without associated CharDriver, do nothing.
+ * Without associated Chardev, do nothing.
  */
 void qemu_chr_fe_set_open(CharBackend *be, int fe_open);
 
@@ -208,7 +208,7 @@ void qemu_chr_fe_set_open(CharBackend *be, int fe_open);
  *
  * Write to a character backend using a printf style interface.  This
  * function is thread-safe. It does nothing without associated
- * CharDriver.
+ * Chardev.
  *
  * @fmt see #printf
  */
@@ -221,7 +221,7 @@ void qemu_chr_fe_printf(CharBackend *be, const char *fmt, ...)
  * If the backend is connected, create and add a #GSource that fires
  * when the given condition (typically G_IO_OUT|G_IO_HUP or G_IO_HUP)
  * is active; return the #GSource's tag.  If it is disconnected,
- * or without associated CharDriver, return 0.
+ * or without associated Chardev, return 0.
  *
  * @cond the condition to poll for
  * @func the function to call when the condition happens
@@ -242,7 +242,7 @@ guint qemu_chr_fe_add_watch(CharBackend *be, GIOCondition cond,
  * @buf the data
  * @len the number of bytes to send
  *
- * Returns: the number of bytes consumed (0 if no assicated CharDriver)
+ * Returns: the number of bytes consumed (0 if no assicated Chardev)
  */
 int qemu_chr_fe_write(CharBackend *be, const uint8_t *buf, int len);
 
@@ -257,7 +257,7 @@ int qemu_chr_fe_write(CharBackend *be, const uint8_t *buf, int len);
  * @buf the data
  * @len the number of bytes to send
  *
- * Returns: the number of bytes consumed (0 if no assicated CharDriver)
+ * Returns: the number of bytes consumed (0 if no assicated Chardev)
  */
 int qemu_chr_fe_write_all(CharBackend *be, const uint8_t *buf, int len);
 
@@ -269,7 +269,7 @@ int qemu_chr_fe_write_all(CharBackend *be, const uint8_t *buf, int len);
  * @buf the data buffer
  * @len the number of bytes to read
  *
- * Returns: the number of bytes read (0 if no assicated CharDriver)
+ * Returns: the number of bytes read (0 if no assicated Chardev)
  */
 int qemu_chr_fe_read_all(CharBackend *be, uint8_t *buf, int len);
 
@@ -282,7 +282,7 @@ int qemu_chr_fe_read_all(CharBackend *be, uint8_t *buf, int len);
  * @arg the data associated with @cmd
  *
  * Returns: if @cmd is not supported by the backend or there is no
- *          associated CharDriver, -ENOTSUP, otherwise the return
+ *          associated Chardev, -ENOTSUP, otherwise the return
  *          value depends on the semantics of @cmd
  */
 int qemu_chr_fe_ioctl(CharBackend *be, int cmd, void *arg);
@@ -322,7 +322,7 @@ int qemu_chr_fe_get_msgfds(CharBackend *be, int *fds, int num);
  * result in overwriting the fd array with the new value without being send.
  * Upon writing the message the fd array is freed.
  *
- * Returns: -1 if fd passing isn't supported or no associated CharDriver.
+ * Returns: -1 if fd passing isn't supported or no associated Chardev.
  */
 int qemu_chr_fe_set_msgfds(CharBackend *be, int *fds, int num);
 
@@ -373,7 +373,7 @@ void qemu_chr_be_event(Chardev *s, int event);
  * @qemu_chr_fe_init:
  *
  * Initializes a front end for the given CharBackend and
- * CharDriver. Call qemu_chr_fe_deinit() to remove the association and
+ * Chardev. Call qemu_chr_fe_deinit() to remove the association and
  * release the driver.
  *
  * Returns: false on error.
@@ -384,16 +384,16 @@ bool qemu_chr_fe_init(CharBackend *b, Chardev *s, Error **errp);
  * @qemu_chr_fe_get_driver:
  *
  * Returns the driver associated with a CharBackend or NULL if no
- * associated CharDriver.
+ * associated Chardev.
  */
 Chardev *qemu_chr_fe_get_driver(CharBackend *be);
 
 /**
  * @qemu_chr_fe_deinit:
  *
- * Dissociate the CharBackend from the CharDriver.
+ * Dissociate the CharBackend from the Chardev.
  *
- * Safe to call without associated CharDriver.
+ * Safe to call without associated Chardev.
  */
 void qemu_chr_fe_deinit(CharBackend *b);
 
@@ -412,7 +412,7 @@ void qemu_chr_fe_deinit(CharBackend *b);
  * Set the front end char handlers. The front end takes the focus if
  * any of the handler is non-NULL.
  *
- * Without associated CharDriver, nothing is changed.
+ * Without associated Chardev, nothing is changed.
  */
 void qemu_chr_fe_set_handlers(CharBackend *b,
                               IOCanReadHandler *fd_can_read,
@@ -427,7 +427,7 @@ void qemu_chr_fe_set_handlers(CharBackend *b,
  *
  * Take the focus (if the front end is muxed).
  *
- * Without associated CharDriver, nothing is changed.
+ * Without associated Chardev, nothing is changed.
  */
 void qemu_chr_fe_take_focus(CharBackend *b);
 
@@ -437,9 +437,9 @@ int qemu_chr_add_client(Chardev *s, int fd);
 Chardev *qemu_chr_find(const char *name);
 
 bool qemu_chr_has_feature(Chardev *chr,
-                          CharDriverFeature feature);
+                          ChardevFeature feature);
 void qemu_chr_set_feature(Chardev *chr,
-                          CharDriverFeature feature);
+                          ChardevFeature feature);
 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename);
 
 #define TYPE_CHARDEV "chardev"
diff --git a/qemu-char.c b/qemu-char.c
index c003223e48..1ce3b80b5c 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -3171,13 +3171,13 @@ typedef struct {
     Chardev *chr;
     char buf[12];
     size_t buflen;
-} TCPCharDriverTelnetInit;
+} TCPChardevTelnetInit;
 
 static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc,
                                        GIOCondition cond G_GNUC_UNUSED,
                                        gpointer user_data)
 {
-    TCPCharDriverTelnetInit *init = user_data;
+    TCPChardevTelnetInit *init = user_data;
     ssize_t ret;
 
     ret = qio_channel_write(ioc, init->buf, init->buflen, NULL);
@@ -3204,8 +3204,8 @@ static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc,
 static void tcp_chr_telnet_init(Chardev *chr)
 {
     SocketChardev *s = SOCKET_CHARDEV(chr);
-    TCPCharDriverTelnetInit *init =
-        g_new0(TCPCharDriverTelnetInit, 1);
+    TCPChardevTelnetInit *init =
+        g_new0(TCPChardevTelnetInit, 1);
     size_t n = 0;
 
     init->chr = chr;
@@ -4967,13 +4967,13 @@ static const TypeInfo char_udp_type_info = {
 };
 
 bool qemu_chr_has_feature(Chardev *chr,
-                          CharDriverFeature feature)
+                          ChardevFeature feature)
 {
     return test_bit(feature, chr->features);
 }
 
 void qemu_chr_set_feature(Chardev *chr,
-                           CharDriverFeature feature)
+                           ChardevFeature feature)
 {
     return set_bit(feature, chr->features);
 }
-- 
2.11.0

[Qemu-devel] [PATCH 18/40] char: remove class kind field

[Marc-André Lureau]

The class kind is necessary to lookup the chardev name in
qmp_chardev_add() after calling qemu_chr_new_from_opts() and to set
the appropriate ChardevBackend (mainly to free the right
fields).

qemu_chr_new_from_opts() can be changed to use a non-qmp function
using the chardev class typename. Introduce qemu_chardev_add() to be
called from qemu_chr_new_from_opts() and remove the class chardev kind
field. Set the backend->type in the parse callback (when non-common
fields are added).

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 include/sysemu/char.h |   1 -
 backends/baum.c       |   1 -
 backends/msmouse.c    |   1 -
 backends/testdev.c    |   1 -
 qemu-char.c           | 105 ++++++++++++++++++++++++--------------------------
 spice-qemu-char.c     |   4 +-
 ui/console.c          |   2 +-
 ui/gtk.c              |   1 -
 8 files changed, 54 insertions(+), 62 deletions(-)

diff --git a/include/sysemu/char.h b/include/sysemu/char.h
index b4303e7b22..31229deaca 100644
--- a/include/sysemu/char.h
+++ b/include/sysemu/char.h
@@ -474,7 +474,6 @@ typedef struct ChardevClass {
     ObjectClass parent_class;
 
     bool internal; /* TODO: eventually use TYPE_USER_CREATABLE */
-    ChardevBackendKind kind;
     void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
 
     void (*open)(Chardev *chr, ChardevBackend *backend,
diff --git a/backends/baum.c b/backends/baum.c
index 5316c8da0a..2eddcae119 100644
--- a/backends/baum.c
+++ b/backends/baum.c
@@ -656,7 +656,6 @@ static void char_braille_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
-    cc->kind = CHARDEV_BACKEND_KIND_BRAILLE;
     cc->open = baum_chr_open;
     cc->chr_write = baum_chr_write;
     cc->chr_accept_input = baum_chr_accept_input;
diff --git a/backends/msmouse.c b/backends/msmouse.c
index 28689b3e29..d2c3162f1e 100644
--- a/backends/msmouse.c
+++ b/backends/msmouse.c
@@ -169,7 +169,6 @@ static void char_msmouse_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
-    cc->kind = CHARDEV_BACKEND_KIND_MSMOUSE;
     cc->open = msmouse_chr_open;
     cc->chr_write = msmouse_chr_write;
     cc->chr_accept_input = msmouse_chr_accept_input;
diff --git a/backends/testdev.c b/backends/testdev.c
index 243454aaa3..7df9248a13 100644
--- a/backends/testdev.c
+++ b/backends/testdev.c
@@ -111,7 +111,6 @@ static void char_testdev_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
-    cc->kind = CHARDEV_BACKEND_KIND_TESTDEV;
     cc->chr_write = testdev_chr_write;
 }
 
diff --git a/qemu-char.c b/qemu-char.c
index 1ce3b80b5c..bf742db892 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -566,7 +566,6 @@ static void char_null_class_init(ObjectClass *oc, void *data)
 
     cc->open = null_chr_open;
     cc->chr_write = null_chr_write;
-    cc->kind = CHARDEV_BACKEND_KIND_NULL;
 }
 
 static const TypeInfo char_null_type_info = {
@@ -1708,7 +1707,6 @@ static void char_pty_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
-    cc->kind = CHARDEV_BACKEND_KIND_PTY;
     cc->open = char_pty_open;
     cc->chr_write = char_pty_chr_write;
     cc->chr_update_read_handler = pty_chr_update_read_handler;
@@ -2455,7 +2453,6 @@ static void char_console_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
-    cc->kind = CHARDEV_BACKEND_KIND_CONSOLE;
     cc->open = qemu_chr_open_win_con;
 }
 
@@ -3807,6 +3804,7 @@ static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
     const char *path = qemu_opt_get(opts, "path");
     ChardevFile *file;
 
+    backend->type = CHARDEV_BACKEND_KIND_FILE;
     if (path == NULL) {
         error_setg(errp, "chardev: file: no filename given");
         return;
@@ -3824,6 +3822,7 @@ static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
 {
     ChardevStdio *stdio;
 
+    backend->type = CHARDEV_BACKEND_KIND_STDIO;
     stdio = backend->u.stdio.data = g_new0(ChardevStdio, 1);
     qemu_chr_parse_common(opts, qapi_ChardevStdio_base(stdio));
     stdio->has_signal = true;
@@ -3834,7 +3833,6 @@ static void char_stdio_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
-    cc->kind = CHARDEV_BACKEND_KIND_STDIO;
     cc->parse = qemu_chr_parse_stdio;
     cc->open = qemu_chr_open_stdio;
 #ifdef _WIN32
@@ -3863,6 +3861,7 @@ static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
     const char *device = qemu_opt_get(opts, "path");
     ChardevHostdev *serial;
 
+    backend->type = CHARDEV_BACKEND_KIND_SERIAL;
     if (device == NULL) {
         error_setg(errp, "chardev: serial/tty: no device path given");
         return;
@@ -3880,6 +3879,7 @@ static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
     const char *device = qemu_opt_get(opts, "path");
     ChardevHostdev *parallel;
 
+    backend->type = CHARDEV_BACKEND_KIND_PARALLEL;
     if (device == NULL) {
         error_setg(errp, "chardev: parallel: no device path given");
         return;
@@ -3896,6 +3896,7 @@ static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
     const char *device = qemu_opt_get(opts, "path");
     ChardevHostdev *dev;
 
+    backend->type = CHARDEV_BACKEND_KIND_PIPE;
     if (device == NULL) {
         error_setg(errp, "chardev: pipe: no device path given");
         return;
@@ -3909,7 +3910,6 @@ static void char_pipe_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
-    cc->kind = CHARDEV_BACKEND_KIND_PIPE;
     cc->parse = qemu_chr_parse_pipe;
     cc->open = qemu_chr_open_pipe;
 }
@@ -3930,6 +3930,7 @@ static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
     int val;
     ChardevRingbuf *ringbuf;
 
+    backend->type = CHARDEV_BACKEND_KIND_RINGBUF;
     ringbuf = backend->u.ringbuf.data = g_new0(ChardevRingbuf, 1);
     qemu_chr_parse_common(opts, qapi_ChardevRingbuf_base(ringbuf));
 
@@ -3944,7 +3945,6 @@ static void char_ringbuf_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
-    cc->kind = CHARDEV_BACKEND_KIND_RINGBUF;
     cc->parse = qemu_chr_parse_ringbuf;
     cc->open = qemu_chr_open_ringbuf;
     cc->chr_write = ringbuf_chr_write;
@@ -3959,17 +3959,9 @@ static const TypeInfo char_ringbuf_type_info = {
 };
 
 /* Bug-compatibility: */
-static void char_memory_class_init(ObjectClass *oc, void *data)
-{
-    ChardevClass *cc = CHARDEV_CLASS(oc);
-
-    cc->kind = CHARDEV_BACKEND_KIND_MEMORY;
-}
-
 static const TypeInfo char_memory_type_info = {
     .name = TYPE_CHARDEV_MEMORY,
     .parent = TYPE_CHARDEV_RINGBUF,
-    .class_init = char_memory_class_init,
 };
 
 static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
@@ -3978,6 +3970,7 @@ static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
     const char *chardev = qemu_opt_get(opts, "chardev");
     ChardevMux *mux;
 
+    backend->type = CHARDEV_BACKEND_KIND_MUX;
     if (chardev == NULL) {
         error_setg(errp, "chardev: mux: no chardev given");
         return;
@@ -3991,7 +3984,6 @@ static void char_mux_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
-    cc->kind = CHARDEV_BACKEND_KIND_MUX;
     cc->parse = qemu_chr_parse_mux;
     cc->open = qemu_chr_open_mux;
     cc->chr_write = mux_chr_write;
@@ -4022,6 +4014,7 @@ static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
     SocketAddress *addr;
     ChardevSocket *sock;
 
+    backend->type = CHARDEV_BACKEND_KIND_SOCKET;
     if (!path) {
         if (!host) {
             error_setg(errp, "chardev: socket: no host given");
@@ -4087,6 +4080,7 @@ static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
     SocketAddress *addr;
     ChardevUdp *udp;
 
+    backend->type = CHARDEV_BACKEND_KIND_UDP;
     if (host == NULL || strlen(host) == 0) {
         host = "localhost";
     }
@@ -4163,6 +4157,26 @@ static const ChardevClass *char_get_class(const char *driver, Error **errp)
     return cc;
 }
 
+static Chardev *qemu_chardev_add(const char *id, const char *typename,
+                                 ChardevBackend *backend, Error **errp)
+{
+    Chardev *chr;
+
+    chr = qemu_chr_find(id);
+    if (chr) {
+        error_setg(errp, "Chardev '%s' already exists", id);
+        return NULL;
+    }
+
+    chr = qemu_chardev_new(id, typename, backend, errp);
+    if (!chr) {
+        return NULL;
+    }
+
+    QTAILQ_INSERT_TAIL(&chardevs, chr, next);
+    return chr;
+}
+
 static const struct ChardevAlias {
     const char *typename;
     const char *alias;
@@ -4182,8 +4196,7 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts,
     const ChardevClass *cc;
     Chardev *chr;
     int i;
-    ChardevReturn *ret = NULL;
-    ChardevBackend *backend;
+    ChardevBackend *backend = NULL;
     const char *name = qemu_opt_get(opts, "backend");
     const char *id = qemu_opts_id(opts);
     char *bid = NULL;
@@ -4191,7 +4204,7 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts,
     if (name == NULL) {
         error_setg(errp, "chardev: \"%s\" missing backend",
                    qemu_opts_id(opts));
-        goto err;
+        return NULL;
     }
 
     if (is_help_option(name)) {
@@ -4210,7 +4223,7 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts,
 
     if (id == NULL) {
         error_setg(errp, "chardev: no id specified");
-        goto err;
+        return NULL;
     }
 
     for (i = 0; i < ARRAY_SIZE(chardev_alias_table); i++) {
@@ -4222,22 +4235,22 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts,
 
     cc = char_get_class(name, errp);
     if (cc == NULL) {
-        goto err;
+        return NULL;
     }
 
     backend = g_new0(ChardevBackend, 1);
+    backend->type = CHARDEV_BACKEND_KIND_NULL;
 
     if (qemu_opt_get_bool(opts, "mux", 0)) {
         bid = g_strdup_printf("%s-base", id);
     }
 
     chr = NULL;
-    backend->type = cc->kind;
     if (cc->parse) {
         cc->parse(opts, backend, &local_err);
         if (local_err) {
             error_propagate(errp, local_err);
-            goto qapi_out;
+            goto out;
         }
     } else {
         ChardevCommon *ccom = g_new0(ChardevCommon, 1);
@@ -4245,37 +4258,33 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts,
         backend->u.null.data = ccom; /* Any ChardevCommon member would work */
     }
 
-    ret = qmp_chardev_add(bid ? bid : id, backend, errp);
-    if (!ret) {
-        goto qapi_out;
+    chr = qemu_chardev_add(bid ? bid : id,
+                           object_class_get_name(OBJECT_CLASS(cc)),
+                           backend, errp);
+    if (chr == NULL) {
+        goto out;
     }
 
     if (bid) {
+        Chardev *mux;
         qapi_free_ChardevBackend(backend);
-        qapi_free_ChardevReturn(ret);
         backend = g_new0(ChardevBackend, 1);
-        backend->u.mux.data = g_new0(ChardevMux, 1);
         backend->type = CHARDEV_BACKEND_KIND_MUX;
+        backend->u.mux.data = g_new0(ChardevMux, 1);
         backend->u.mux.data->chardev = g_strdup(bid);
-        ret = qmp_chardev_add(id, backend, errp);
-        if (!ret) {
-            chr = qemu_chr_find(bid);
+        mux = qemu_chardev_add(id, TYPE_CHARDEV_MUX, backend, errp);
+        if (mux == NULL) {
             qemu_chr_delete(chr);
             chr = NULL;
-            goto qapi_out;
+            goto out;
         }
+        chr = mux;
     }
 
-    chr = qemu_chr_find(id);
-
-qapi_out:
+out:
     qapi_free_ChardevBackend(backend);
-    qapi_free_ChardevReturn(ret);
     g_free(bid);
     return chr;
-
-err:
-    return NULL;
 }
 
 Chardev *qemu_chr_new_noreplay(const char *label, const char *filename)
@@ -4677,7 +4686,6 @@ static void char_parallel_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
-    cc->kind = CHARDEV_BACKEND_KIND_PARALLEL;
     cc->parse = qemu_chr_parse_parallel;
     cc->open = qmp_chardev_open_parallel;
 #if defined(__linux__)
@@ -4720,7 +4728,6 @@ static void char_file_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
-    cc->kind = CHARDEV_BACKEND_KIND_FILE;
     cc->parse = qemu_chr_parse_file_out;
     cc->open = qmp_chardev_open_file;
 }
@@ -4741,7 +4748,6 @@ static void char_serial_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
-    cc->kind = CHARDEV_BACKEND_KIND_SERIAL;
     cc->parse = qemu_chr_parse_serial;
     cc->open = qmp_chardev_open_serial;
 #ifndef _WIN32
@@ -4899,7 +4905,6 @@ static void char_socket_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
-    cc->kind = CHARDEV_BACKEND_KIND_SOCKET;
     cc->parse = qemu_chr_parse_socket;
     cc->open = qmp_chardev_open_socket;
     cc->chr_wait_connected = tcp_chr_wait_connected;
@@ -4951,7 +4956,6 @@ static void char_udp_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
-    cc->kind = CHARDEV_BACKEND_KIND_UDP;
     cc->parse = qemu_chr_parse_udp;
     cc->open = qmp_chardev_open_udp;
     cc->chr_write = udp_chr_write;
@@ -5010,24 +5014,18 @@ Chardev *qemu_chardev_new(const char *id, const char *typename,
 ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
                                Error **errp)
 {
-    const ChardevClass *cc;
     ChardevReturn *ret;
+    const ChardevClass *cc;
     Chardev *chr;
 
-    chr = qemu_chr_find(id);
-    if (chr) {
-        error_setg(errp, "Chardev '%s' already exists", id);
-        return NULL;
-    }
-
     cc = char_get_class(ChardevBackendKind_lookup[backend->type], errp);
-    if (!cc) {
+    if (cc == NULL) {
         return NULL;
     }
 
-    chr = qemu_chardev_new(id, object_class_get_name(OBJECT_CLASS(cc)),
+    chr = qemu_chardev_add(id, object_class_get_name(OBJECT_CLASS(cc)),
                            backend, errp);
-    if (!chr) {
+    if (chr == NULL) {
         return NULL;
     }
 
@@ -5037,7 +5035,6 @@ ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
         ret->has_pty = true;
     }
 
-    QTAILQ_INSERT_TAIL(&chardevs, chr, next);
     return ret;
 }
 
diff --git a/spice-qemu-char.c b/spice-qemu-char.c
index 17305830ab..adfa55b55c 100644
--- a/spice-qemu-char.c
+++ b/spice-qemu-char.c
@@ -338,6 +338,7 @@ static void qemu_chr_parse_spice_vmc(QemuOpts *opts, ChardevBackend *backend,
         error_setg(errp, "chardev: spice channel: no name given");
         return;
     }
+    backend->type = CHARDEV_BACKEND_KIND_SPICEVMC;
     spicevmc = backend->u.spicevmc.data = g_new0(ChardevSpiceChannel, 1);
     qemu_chr_parse_common(opts, qapi_ChardevSpiceChannel_base(spicevmc));
     spicevmc->type = g_strdup(name);
@@ -353,6 +354,7 @@ static void qemu_chr_parse_spice_port(QemuOpts *opts, ChardevBackend *backend,
         error_setg(errp, "chardev: spice port: no name given");
         return;
     }
+    backend->type = CHARDEV_BACKEND_KIND_SPICEPORT;
     spiceport = backend->u.spiceport.data = g_new0(ChardevSpicePort, 1);
     qemu_chr_parse_common(opts, qapi_ChardevSpicePort_base(spiceport));
     spiceport->fqdn = g_strdup(name);
@@ -380,7 +382,6 @@ static void char_spicevmc_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
-    cc->kind = CHARDEV_BACKEND_KIND_SPICEVMC;
     cc->parse = qemu_chr_parse_spice_vmc;
     cc->open = qemu_chr_open_spice_vmc;
     cc->chr_set_fe_open = spice_vmc_set_fe_open;
@@ -396,7 +397,6 @@ static void char_spiceport_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
-    cc->kind = CHARDEV_BACKEND_KIND_SPICEPORT;
     cc->parse = qemu_chr_parse_spice_port;
     cc->open = qemu_chr_open_spice_port;
     cc->chr_set_fe_open = spice_port_set_fe_open;
diff --git a/ui/console.c b/ui/console.c
index 84fcbd86fd..8c93f2a1e8 100644
--- a/ui/console.c
+++ b/ui/console.c
@@ -2148,6 +2148,7 @@ void qemu_chr_parse_vc(QemuOpts *opts, ChardevBackend *backend, Error **errp)
     int val;
     ChardevVC *vc;
 
+    backend->type = CHARDEV_BACKEND_KIND_VC;
     vc = backend->u.vc.data = g_new0(ChardevVC, 1);
     qemu_chr_parse_common(opts, qapi_ChardevVC_base(vc));
 
@@ -2187,7 +2188,6 @@ static void char_vc_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
-    cc->kind = CHARDEV_BACKEND_KIND_VC;
     cc->parse = qemu_chr_parse_vc;
     cc->open = vc_chr_open;
     cc->chr_write = vc_chr_write;
diff --git a/ui/gtk.c b/ui/gtk.c
index f4542e3b86..4984bf3bd9 100644
--- a/ui/gtk.c
+++ b/ui/gtk.c
@@ -1737,7 +1737,6 @@ static void char_gd_vc_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
-    cc->kind = CHARDEV_BACKEND_KIND_VC;
     cc->parse = qemu_chr_parse_vc;
     cc->open = gd_vc_open;
     cc->chr_write = gd_vc_chr_write;
-- 
2.11.0

[Qemu-devel] [PATCH 19/40] char: move to chardev/

[Marc-André Lureau]

The following commits will split char.c in several files. Let's put them
in a subdirectory.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 qemu-char.c => chardev/char.c | 0
 MAINTAINERS                   | 2 +-
 Makefile.objs                 | 2 +-
 chardev/Makefile.objs         | 1 +
 tests/Makefile.include        | 6 +++---
 5 files changed, 6 insertions(+), 5 deletions(-)
 rename qemu-char.c => chardev/char.c (100%)
 create mode 100644 chardev/Makefile.objs

diff --git a/qemu-char.c b/chardev/char.c
similarity index 100%
rename from qemu-char.c
rename to chardev/char.c
diff --git a/MAINTAINERS b/MAINTAINERS
index 1444b26dc0..7454501020 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1173,7 +1173,7 @@ T: git git://github.com/jnsnow/qemu.git bitmaps
 Character device backends
 M: Paolo Bonzini <pbonzini@redhat.com>
 S: Maintained
-F: qemu-char.c
+F: chardev/
 F: backends/msmouse.c
 F: backends/testdev.c
 
diff --git a/Makefile.objs b/Makefile.objs
index 01cef866e4..cad4c54740 100644
--- a/Makefile.objs
+++ b/Makefile.objs
@@ -51,7 +51,7 @@ common-obj-$(CONFIG_POSIX) += os-posix.o
 common-obj-$(CONFIG_LINUX) += fsdev/
 
 common-obj-y += migration/
-common-obj-y += qemu-char.o #aio.o
+common-obj-y += chardev/ #aio.o
 common-obj-y += page_cache.o
 
 common-obj-$(CONFIG_SPICE) += spice-qemu-char.o
diff --git a/chardev/Makefile.objs b/chardev/Makefile.objs
new file mode 100644
index 0000000000..3fc5539518
--- /dev/null
+++ b/chardev/Makefile.objs
@@ -0,0 +1 @@
+common-obj-y += char.o
diff --git a/tests/Makefile.include b/tests/Makefile.include
index 8368254ddd..a85e97b220 100644
--- a/tests/Makefile.include
+++ b/tests/Makefile.include
@@ -9,7 +9,7 @@ SYSEMU_TARGET_LIST := $(subst -softmmu.mak,,$(notdir \
 check-unit-y = tests/check-qdict$(EXESUF)
 gcov-files-check-qdict-y = qobject/qdict.c
 check-unit-y += tests/test-char$(EXESUF)
-gcov-files-check-qdict-y = qemu-char.c
+gcov-files-check-qdict-y = chardev/char.c
 check-unit-y += tests/check-qfloat$(EXESUF)
 gcov-files-check-qfloat-y = qobject/qfloat.c
 check-unit-y += tests/check-qint$(EXESUF)
@@ -489,7 +489,7 @@ tests/check-qjson$(EXESUF): tests/check-qjson.o $(test-util-obj-y)
 tests/check-qom-interface$(EXESUF): tests/check-qom-interface.o $(test-qom-obj-y)
 tests/check-qom-proplist$(EXESUF): tests/check-qom-proplist.o $(test-qom-obj-y)
 
-tests/test-char$(EXESUF): tests/test-char.o qemu-char.o qemu-timer.o $(test-util-obj-y) $(qtest-obj-y) $(test-block-obj-y)
+tests/test-char$(EXESUF): tests/test-char.o chardev/char.o qemu-timer.o $(test-util-obj-y) $(qtest-obj-y) $(test-block-obj-y)
 tests/test-coroutine$(EXESUF): tests/test-coroutine.o $(test-block-obj-y)
 tests/test-aio$(EXESUF): tests/test-aio.o $(test-block-obj-y)
 tests/test-throttle$(EXESUF): tests/test-throttle.o $(test-block-obj-y)
@@ -680,7 +680,7 @@ tests/usb-hcd-ehci-test$(EXESUF): tests/usb-hcd-ehci-test.o $(libqos-usb-obj-y)
 tests/usb-hcd-xhci-test$(EXESUF): tests/usb-hcd-xhci-test.o $(libqos-usb-obj-y)
 tests/pc-cpu-test$(EXESUF): tests/pc-cpu-test.o
 tests/postcopy-test$(EXESUF): tests/postcopy-test.o
-tests/vhost-user-test$(EXESUF): tests/vhost-user-test.o qemu-char.o qemu-timer.o $(qtest-obj-y) $(test-io-obj-y) $(libqos-virtio-obj-y) $(libqos-pc-obj-y)
+tests/vhost-user-test$(EXESUF): tests/vhost-user-test.o chardev/char.o qemu-timer.o $(qtest-obj-y) $(test-io-obj-y) $(libqos-virtio-obj-y) $(libqos-pc-obj-y)
 tests/qemu-iotests/socket_scm_helper$(EXESUF): tests/qemu-iotests/socket_scm_helper.o
 tests/test-qemu-opts$(EXESUF): tests/test-qemu-opts.o $(test-util-obj-y)
 tests/test-write-threshold$(EXESUF): tests/test-write-threshold.o $(test-block-obj-y)
-- 
2.11.0

[Qemu-devel] [PATCH 20/40] char: create chardev-obj-y

[Marc-André Lureau]

This will help to split char.c in several units without having to
reference them all everywhere. This is useful in particular for tests.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 Makefile               | 3 ++-
 Makefile.objs          | 4 +++-
 Makefile.target        | 3 +++
 chardev/Makefile.objs  | 2 +-
 tests/Makefile.include | 4 ++--
 5 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/Makefile b/Makefile
index 1a8bfb225c..16435896d5 100644
--- a/Makefile
+++ b/Makefile
@@ -145,6 +145,7 @@ endif
 
 dummy := $(call unnest-vars,, \
                 stub-obj-y \
+                chardev-obj-y \
                 util-obj-y \
                 qga-obj-y \
                 ivshmem-client-obj-y \
@@ -221,7 +222,7 @@ subdir-dtc:dtc/libfdt dtc/tests
 dtc/%:
 	mkdir -p $@
 
-$(SUBDIR_RULES): libqemuutil.a libqemustub.a $(common-obj-y) $(qom-obj-y) $(crypto-aes-obj-$(CONFIG_USER_ONLY))
+$(SUBDIR_RULES): libqemuutil.a libqemustub.a $(common-obj-y) $(chardev-obj-y) $(qom-obj-y) $(crypto-aes-obj-$(CONFIG_USER_ONLY))
 
 ROMSUBDIR_RULES=$(patsubst %,romsubdir-%, $(ROMS))
 # Only keep -O and -g cflags
diff --git a/Makefile.objs b/Makefile.objs
index cad4c54740..7985d21841 100644
--- a/Makefile.objs
+++ b/Makefile.objs
@@ -51,7 +51,7 @@ common-obj-$(CONFIG_POSIX) += os-posix.o
 common-obj-$(CONFIG_LINUX) += fsdev/
 
 common-obj-y += migration/
-common-obj-y += chardev/ #aio.o
+common-obj-y += #aio.o
 common-obj-y += page_cache.o
 
 common-obj-$(CONFIG_SPICE) += spice-qemu-char.o
@@ -79,6 +79,8 @@ common-obj-$(CONFIG_SECCOMP) += qemu-seccomp.o
 
 common-obj-$(CONFIG_FDT) += device_tree.o
 
+chardev-obj-y = chardev/
+
 ######################################################################
 # qapi
 
diff --git a/Makefile.target b/Makefile.target
index 8ae82cb311..b0ec01c3b9 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -171,12 +171,14 @@ all-obj-y := $(obj-y)
 target-obj-y :=
 block-obj-y :=
 common-obj-y :=
+chardev-obj-y :=
 include $(SRC_PATH)/Makefile.objs
 dummy := $(call unnest-vars,,target-obj-y)
 target-obj-y-save := $(target-obj-y)
 dummy := $(call unnest-vars,.., \
                block-obj-y \
                block-obj-m \
+               chardev-obj-y \
                crypto-obj-y \
                crypto-aes-obj-y \
                qom-obj-y \
@@ -185,6 +187,7 @@ dummy := $(call unnest-vars,.., \
                common-obj-m)
 target-obj-y := $(target-obj-y-save)
 all-obj-y += $(common-obj-y)
+all-obj-y += $(chardev-obj-y)
 all-obj-y += $(target-obj-y)
 all-obj-y += $(qom-obj-y)
 all-obj-$(CONFIG_SOFTMMU) += $(block-obj-y)
diff --git a/chardev/Makefile.objs b/chardev/Makefile.objs
index 3fc5539518..8bf131b461 100644
--- a/chardev/Makefile.objs
+++ b/chardev/Makefile.objs
@@ -1 +1 @@
-common-obj-y += char.o
+chardev-obj-y += char.o
diff --git a/tests/Makefile.include b/tests/Makefile.include
index a85e97b220..ba4b083f99 100644
--- a/tests/Makefile.include
+++ b/tests/Makefile.include
@@ -489,7 +489,7 @@ tests/check-qjson$(EXESUF): tests/check-qjson.o $(test-util-obj-y)
 tests/check-qom-interface$(EXESUF): tests/check-qom-interface.o $(test-qom-obj-y)
 tests/check-qom-proplist$(EXESUF): tests/check-qom-proplist.o $(test-qom-obj-y)
 
-tests/test-char$(EXESUF): tests/test-char.o chardev/char.o qemu-timer.o $(test-util-obj-y) $(qtest-obj-y) $(test-block-obj-y)
+tests/test-char$(EXESUF): tests/test-char.o chardev/char.o qemu-timer.o $(test-util-obj-y) $(qtest-obj-y) $(test-block-obj-y) $(chardev-obj-y)
 tests/test-coroutine$(EXESUF): tests/test-coroutine.o $(test-block-obj-y)
 tests/test-aio$(EXESUF): tests/test-aio.o $(test-block-obj-y)
 tests/test-throttle$(EXESUF): tests/test-throttle.o $(test-block-obj-y)
@@ -680,7 +680,7 @@ tests/usb-hcd-ehci-test$(EXESUF): tests/usb-hcd-ehci-test.o $(libqos-usb-obj-y)
 tests/usb-hcd-xhci-test$(EXESUF): tests/usb-hcd-xhci-test.o $(libqos-usb-obj-y)
 tests/pc-cpu-test$(EXESUF): tests/pc-cpu-test.o
 tests/postcopy-test$(EXESUF): tests/postcopy-test.o
-tests/vhost-user-test$(EXESUF): tests/vhost-user-test.o chardev/char.o qemu-timer.o $(qtest-obj-y) $(test-io-obj-y) $(libqos-virtio-obj-y) $(libqos-pc-obj-y)
+tests/vhost-user-test$(EXESUF): tests/vhost-user-test.o qemu-timer.o $(qtest-obj-y) $(test-io-obj-y) $(libqos-virtio-obj-y) $(libqos-pc-obj-y) $(chardev-obj-y)
 tests/qemu-iotests/socket_scm_helper$(EXESUF): tests/qemu-iotests/socket_scm_helper.o
 tests/test-qemu-opts$(EXESUF): tests/test-qemu-opts.o $(test-util-obj-y)
 tests/test-write-threshold$(EXESUF): tests/test-write-threshold.o $(test-block-obj-y)
-- 
2.11.0

[Qemu-devel] [PATCH 21/40] char: make null_chr_write() the default method

[Marc-André Lureau]

All chardev must implement chr_write(), but parallel and null chardev
both use null_chr_write(). Move it to the base class, so we don't need
to export the function when splitting the chardev in respective files.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 chardev/char.c | 21 +++++++++++++--------
 1 file changed, 13 insertions(+), 8 deletions(-)

diff --git a/chardev/char.c b/chardev/char.c
index bf742db892..74e0d0b32a 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -522,6 +522,18 @@ static void char_init(Object *obj)
     qemu_mutex_init(&chr->chr_write_lock);
 }
 
+static int null_chr_write(Chardev *chr, const uint8_t *buf, int len)
+{
+    return len;
+}
+
+static void char_class_init(ObjectClass *oc, void *data)
+{
+    ChardevClass *cc = CHARDEV_CLASS(oc);
+
+    cc->chr_write = null_chr_write;
+}
+
 static void char_finalize(Object *obj)
 {
     Chardev *chr = CHARDEV(obj);
@@ -545,13 +557,9 @@ static const TypeInfo char_type_info = {
     .instance_finalize = char_finalize,
     .abstract = true,
     .class_size = sizeof(ChardevClass),
+    .class_init = char_class_init,
 };
 
-static int null_chr_write(Chardev *chr, const uint8_t *buf, int len)
-{
-    return len;
-}
-
 static void null_chr_open(Chardev *chr,
                           ChardevBackend *backend,
                           bool *be_opened,
@@ -565,7 +573,6 @@ static void char_null_class_init(ObjectClass *oc, void *data)
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
     cc->open = null_chr_open;
-    cc->chr_write = null_chr_write;
 }
 
 static const TypeInfo char_null_type_info = {
@@ -4689,10 +4696,8 @@ static void char_parallel_class_init(ObjectClass *oc, void *data)
     cc->parse = qemu_chr_parse_parallel;
     cc->open = qmp_chardev_open_parallel;
 #if defined(__linux__)
-    cc->chr_write = null_chr_write;
     cc->chr_ioctl = pp_ioctl;
 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
-    cc->chr_write = null_chr_write;
     cc->chr_ioctl = pp_ioctl;
 #endif
 }
-- 
2.11.0

[Qemu-devel] [PATCH 22/40] char: move null chardev to its own file

[Marc-André Lureau]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 chardev/char-null.c   | 31 +++++++++++++++++++++++++++++++
 chardev/char.c        | 23 -----------------------
 chardev/Makefile.objs |  1 +
 3 files changed, 32 insertions(+), 23 deletions(-)
 create mode 100644 chardev/char-null.c

diff --git a/chardev/char-null.c b/chardev/char-null.c
new file mode 100644
index 0000000000..18a49f5802
--- /dev/null
+++ b/chardev/char-null.c
@@ -0,0 +1,31 @@
+#include "qemu/osdep.h"
+#include "sysemu/char.h"
+
+static void null_chr_open(Chardev *chr,
+                          ChardevBackend *backend,
+                          bool *be_opened,
+                          Error **errp)
+{
+    *be_opened = false;
+}
+
+static void char_null_class_init(ObjectClass *oc, void *data)
+{
+    ChardevClass *cc = CHARDEV_CLASS(oc);
+
+    cc->open = null_chr_open;
+}
+
+static const TypeInfo char_null_type_info = {
+    .name = TYPE_CHARDEV_NULL,
+    .parent = TYPE_CHARDEV,
+    .instance_size = sizeof(Chardev),
+    .class_init = char_null_class_init,
+};
+
+static void register_types(void)
+{
+    type_register_static(&char_null_type_info);
+}
+
+type_init(register_types);
diff --git a/chardev/char.c b/chardev/char.c
index 74e0d0b32a..a27199f89b 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -560,28 +560,6 @@ static const TypeInfo char_type_info = {
     .class_init = char_class_init,
 };
 
-static void null_chr_open(Chardev *chr,
-                          ChardevBackend *backend,
-                          bool *be_opened,
-                          Error **errp)
-{
-    *be_opened = false;
-}
-
-static void char_null_class_init(ObjectClass *oc, void *data)
-{
-    ChardevClass *cc = CHARDEV_CLASS(oc);
-
-    cc->open = null_chr_open;
-}
-
-static const TypeInfo char_null_type_info = {
-    .name = TYPE_CHARDEV_NULL,
-    .parent = TYPE_CHARDEV,
-    .instance_size = sizeof(Chardev),
-    .class_init = char_null_class_init,
-};
-
 /* MUX driver for serial I/O splitting */
 #define MAX_MUX 4
 #define MUX_BUFFER_SIZE 32	/* Must be a power of 2.  */
@@ -5082,7 +5060,6 @@ static void register_types(void)
     type_register_static(&char_win_type_info);
     type_register_static(&char_win_stdio_type_info);
 #endif
-    type_register_static(&char_null_type_info);
     type_register_static(&char_socket_type_info);
     type_register_static(&char_udp_type_info);
     type_register_static(&char_ringbuf_type_info);
diff --git a/chardev/Makefile.objs b/chardev/Makefile.objs
index 8bf131b461..be7ff800c3 100644
--- a/chardev/Makefile.objs
+++ b/chardev/Makefile.objs
@@ -1 +1,2 @@
 chardev-obj-y += char.o
+chardev-obj-y += char-null.o
-- 
2.11.0

[Qemu-devel] [PATCH 23/40] char: move mux to its own file

[Marc-André Lureau]

A mechanical move, except that qemu_chr_write_all() needs to be declared
in char.h header to be used from chardev unit files.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 chardev/char-mux.h    |  40 ++++++
 include/sysemu/char.h |   3 +-
 chardev/char-mux.c    | 335 +++++++++++++++++++++++++++++++++++++++++++++++
 chardev/char.c        | 352 +-------------------------------------------------
 chardev/Makefile.objs |   1 +
 5 files changed, 380 insertions(+), 351 deletions(-)
 create mode 100644 chardev/char-mux.h
 create mode 100644 chardev/char-mux.c

diff --git a/chardev/char-mux.h b/chardev/char-mux.h
new file mode 100644
index 0000000000..97205d4497
--- /dev/null
+++ b/chardev/char-mux.h
@@ -0,0 +1,40 @@
+#ifndef CHAR_MUX_H
+#define CHAR_MUX_H
+
+#include "sysemu/char.h"
+
+extern bool muxes_realized;
+
+#define MAX_MUX 4
+#define MUX_BUFFER_SIZE 32 /* Must be a power of 2.  */
+#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
+typedef struct MuxChardev {
+    Chardev parent;
+    CharBackend *backends[MAX_MUX];
+    CharBackend chr;
+    int focus;
+    int mux_cnt;
+    int term_got_escape;
+    int max_size;
+    /* Intermediate input buffer allows to catch escape sequences even if the
+       currently active device is not accepting any input - but only until it
+       is full as well. */
+    unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
+    int prod[MAX_MUX];
+    int cons[MAX_MUX];
+    int timestamps;
+
+    /* Protected by the Chardev chr_write_lock.  */
+    int linestart;
+    int64_t timestamps_start;
+} MuxChardev;
+
+#define MUX_CHARDEV(obj) OBJECT_CHECK(MuxChardev, (obj), TYPE_CHARDEV_MUX)
+#define CHARDEV_IS_MUX(chr)                             \
+    object_dynamic_cast(OBJECT(chr), TYPE_CHARDEV_MUX)
+
+void mux_chr_set_handlers(Chardev *chr, GMainContext *context);
+void mux_set_focus(Chardev *chr, int focus);
+void mux_chr_send_event(MuxChardev *d, int mux_nr, int event);
+
+#endif /* CHAR_MUX_H */
diff --git a/include/sysemu/char.h b/include/sysemu/char.h
index 31229deaca..1e1f5c7b2b 100644
--- a/include/sysemu/char.h
+++ b/include/sysemu/char.h
@@ -441,6 +441,7 @@ bool qemu_chr_has_feature(Chardev *chr,
 void qemu_chr_set_feature(Chardev *chr,
                           ChardevFeature feature);
 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename);
+int qemu_chr_write_all(Chardev *s, const uint8_t *buf, int len);
 
 #define TYPE_CHARDEV "chardev"
 #define CHARDEV(obj) OBJECT_CHECK(Chardev, (obj), TYPE_CHARDEV)
@@ -463,8 +464,6 @@ QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename);
 #define TYPE_CHARDEV_SOCKET "chardev-socket"
 #define TYPE_CHARDEV_UDP "chardev-udp"
 
-#define CHARDEV_IS_MUX(chr) \
-    object_dynamic_cast(OBJECT(chr), TYPE_CHARDEV_MUX)
 #define CHARDEV_IS_RINGBUF(chr) \
     object_dynamic_cast(OBJECT(chr), TYPE_CHARDEV_RINGBUF)
 #define CHARDEV_IS_PTY(chr) \
diff --git a/chardev/char-mux.c b/chardev/char-mux.c
new file mode 100644
index 0000000000..5baeeb3c45
--- /dev/null
+++ b/chardev/char-mux.c
@@ -0,0 +1,335 @@
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "qemu-common.h"
+#include "sysemu/char.h"
+#include "sysemu/block-backend.h"
+#include "char-mux.h"
+
+/* MUX driver for serial I/O splitting */
+
+/* Called with chr_write_lock held.  */
+static int mux_chr_write(Chardev *chr, const uint8_t *buf, int len)
+{
+    MuxChardev *d = MUX_CHARDEV(chr);
+    int ret;
+    if (!d->timestamps) {
+        ret = qemu_chr_fe_write(&d->chr, buf, len);
+    } else {
+        int i;
+
+        ret = 0;
+        for (i = 0; i < len; i++) {
+            if (d->linestart) {
+                char buf1[64];
+                int64_t ti;
+                int secs;
+
+                ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
+                if (d->timestamps_start == -1) {
+                    d->timestamps_start = ti;
+                }
+                ti -= d->timestamps_start;
+                secs = ti / 1000;
+                snprintf(buf1, sizeof(buf1),
+                         "[%02d:%02d:%02d.%03d] ",
+                         secs / 3600,
+                         (secs / 60) % 60,
+                         secs % 60,
+                         (int)(ti % 1000));
+                /* XXX this blocks entire thread. Rewrite to use
+                 * qemu_chr_fe_write and background I/O callbacks */
+                qemu_chr_fe_write_all(&d->chr,
+                                      (uint8_t *)buf1, strlen(buf1));
+                d->linestart = 0;
+            }
+            ret += qemu_chr_fe_write(&d->chr, buf + i, 1);
+            if (buf[i] == '\n') {
+                d->linestart = 1;
+            }
+        }
+    }
+    return ret;
+}
+
+static const char * const mux_help[] = {
+    "% h    print this help\n\r",
+    "% x    exit emulator\n\r",
+    "% s    save disk data back to file (if -snapshot)\n\r",
+    "% t    toggle console timestamps\n\r",
+    "% b    send break (magic sysrq)\n\r",
+    "% c    switch between console and monitor\n\r",
+    "% %  sends %\n\r",
+    NULL
+};
+
+int term_escape_char = 0x01; /* ctrl-a is used for escape */
+static void mux_print_help(Chardev *chr)
+{
+    int i, j;
+    char ebuf[15] = "Escape-Char";
+    char cbuf[50] = "\n\r";
+
+    if (term_escape_char > 0 && term_escape_char < 26) {
+        snprintf(cbuf, sizeof(cbuf), "\n\r");
+        snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
+    } else {
+        snprintf(cbuf, sizeof(cbuf),
+                 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
+                 term_escape_char);
+    }
+    /* XXX this blocks entire thread. Rewrite to use
+     * qemu_chr_fe_write and background I/O callbacks */
+    qemu_chr_write_all(chr, (uint8_t *)cbuf, strlen(cbuf));
+    for (i = 0; mux_help[i] != NULL; i++) {
+        for (j = 0; mux_help[i][j] != '\0'; j++) {
+            if (mux_help[i][j] == '%') {
+                qemu_chr_write_all(chr, (uint8_t *)ebuf, strlen(ebuf));
+            } else {
+                qemu_chr_write_all(chr, (uint8_t *)&mux_help[i][j], 1);
+            }
+        }
+    }
+}
+
+void mux_chr_send_event(MuxChardev *d, int mux_nr, int event)
+{
+    CharBackend *be = d->backends[mux_nr];
+
+    if (be && be->chr_event) {
+        be->chr_event(be->opaque, event);
+    }
+}
+
+static int mux_proc_byte(Chardev *chr, MuxChardev *d, int ch)
+{
+    if (d->term_got_escape) {
+        d->term_got_escape = 0;
+        if (ch == term_escape_char) {
+            goto send_char;
+        }
+        switch (ch) {
+        case '?':
+        case 'h':
+            mux_print_help(chr);
+            break;
+        case 'x':
+            {
+                 const char *term =  "QEMU: Terminated\n\r";
+                 qemu_chr_write_all(chr, (uint8_t *)term, strlen(term));
+                 exit(0);
+                 break;
+            }
+        case 's':
+            blk_commit_all();
+            break;
+        case 'b':
+            qemu_chr_be_event(chr, CHR_EVENT_BREAK);
+            break;
+        case 'c':
+            assert(d->mux_cnt > 0); /* handler registered with first fe */
+            /* Switch to the next registered device */
+            mux_set_focus(chr, (d->focus + 1) % d->mux_cnt);
+            break;
+        case 't':
+            d->timestamps = !d->timestamps;
+            d->timestamps_start = -1;
+            d->linestart = 0;
+            break;
+        }
+    } else if (ch == term_escape_char) {
+        d->term_got_escape = 1;
+    } else {
+    send_char:
+        return 1;
+    }
+    return 0;
+}
+
+static void mux_chr_accept_input(Chardev *chr)
+{
+    MuxChardev *d = MUX_CHARDEV(chr);
+    int m = d->focus;
+    CharBackend *be = d->backends[m];
+
+    while (be && d->prod[m] != d->cons[m] &&
+           be->chr_can_read && be->chr_can_read(be->opaque)) {
+        be->chr_read(be->opaque,
+                     &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
+    }
+}
+
+static int mux_chr_can_read(void *opaque)
+{
+    MuxChardev *d = MUX_CHARDEV(opaque);
+    int m = d->focus;
+    CharBackend *be = d->backends[m];
+
+    if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE) {
+        return 1;
+    }
+
+    if (be && be->chr_can_read) {
+        return be->chr_can_read(be->opaque);
+    }
+
+    return 0;
+}
+
+static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
+{
+    Chardev *chr = CHARDEV(opaque);
+    MuxChardev *d = MUX_CHARDEV(opaque);
+    int m = d->focus;
+    CharBackend *be = d->backends[m];
+    int i;
+
+    mux_chr_accept_input(opaque);
+
+    for (i = 0; i < size; i++)
+        if (mux_proc_byte(chr, d, buf[i])) {
+            if (d->prod[m] == d->cons[m] &&
+                be && be->chr_can_read &&
+                be->chr_can_read(be->opaque)) {
+                be->chr_read(be->opaque, &buf[i], 1);
+            } else {
+                d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
+            }
+        }
+}
+
+bool muxes_realized;
+
+static void mux_chr_event(void *opaque, int event)
+{
+    MuxChardev *d = MUX_CHARDEV(opaque);
+    int i;
+
+    if (!muxes_realized) {
+        return;
+    }
+
+    /* Send the event to all registered listeners */
+    for (i = 0; i < d->mux_cnt; i++) {
+        mux_chr_send_event(d, i, event);
+    }
+}
+
+static GSource *mux_chr_add_watch(Chardev *s, GIOCondition cond)
+{
+    MuxChardev *d = MUX_CHARDEV(s);
+    Chardev *chr = qemu_chr_fe_get_driver(&d->chr);
+    ChardevClass *cc = CHARDEV_GET_CLASS(chr);
+
+    if (!cc->chr_add_watch) {
+        return NULL;
+    }
+
+    return cc->chr_add_watch(chr, cond);
+}
+
+static void char_mux_finalize(Object *obj)
+{
+    MuxChardev *d = MUX_CHARDEV(obj);
+    int i;
+
+    for (i = 0; i < d->mux_cnt; i++) {
+        CharBackend *be = d->backends[i];
+        if (be) {
+            be->chr = NULL;
+        }
+    }
+    qemu_chr_fe_deinit(&d->chr);
+}
+
+void mux_chr_set_handlers(Chardev *chr, GMainContext *context)
+{
+    MuxChardev *d = MUX_CHARDEV(chr);
+
+    /* Fix up the real driver with mux routines */
+    qemu_chr_fe_set_handlers(&d->chr,
+                             mux_chr_can_read,
+                             mux_chr_read,
+                             mux_chr_event,
+                             chr,
+                             context, true);
+}
+
+void mux_set_focus(Chardev *chr, int focus)
+{
+    MuxChardev *d = MUX_CHARDEV(chr);
+
+    assert(focus >= 0);
+    assert(focus < d->mux_cnt);
+
+    if (d->focus != -1) {
+        mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
+    }
+
+    d->focus = focus;
+    mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
+}
+
+static void qemu_chr_open_mux(Chardev *chr,
+                              ChardevBackend *backend,
+                              bool *be_opened,
+                              Error **errp)
+{
+    ChardevMux *mux = backend->u.mux.data;
+    Chardev *drv;
+    MuxChardev *d = MUX_CHARDEV(chr);
+
+    drv = qemu_chr_find(mux->chardev);
+    if (drv == NULL) {
+        error_setg(errp, "mux: base chardev %s not found", mux->chardev);
+        return;
+    }
+
+    d->focus = -1;
+    /* only default to opened state if we've realized the initial
+     * set of muxes
+     */
+    *be_opened = muxes_realized;
+    qemu_chr_fe_init(&d->chr, drv, errp);
+}
+
+static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
+                               Error **errp)
+{
+    const char *chardev = qemu_opt_get(opts, "chardev");
+    ChardevMux *mux;
+
+    if (chardev == NULL) {
+        error_setg(errp, "chardev: mux: no chardev given");
+        return;
+    }
+    backend->type = CHARDEV_BACKEND_KIND_MUX;
+    mux = backend->u.mux.data = g_new0(ChardevMux, 1);
+    qemu_chr_parse_common(opts, qapi_ChardevMux_base(mux));
+    mux->chardev = g_strdup(chardev);
+}
+
+static void char_mux_class_init(ObjectClass *oc, void *data)
+{
+    ChardevClass *cc = CHARDEV_CLASS(oc);
+
+    cc->parse = qemu_chr_parse_mux;
+    cc->open = qemu_chr_open_mux;
+    cc->chr_write = mux_chr_write;
+    cc->chr_accept_input = mux_chr_accept_input;
+    cc->chr_add_watch = mux_chr_add_watch;
+}
+
+static const TypeInfo char_mux_type_info = {
+    .name = TYPE_CHARDEV_MUX,
+    .parent = TYPE_CHARDEV,
+    .class_init = char_mux_class_init,
+    .instance_size = sizeof(MuxChardev),
+    .instance_finalize = char_mux_finalize,
+};
+
+static void register_types(void)
+{
+    type_register_static(&char_mux_type_info);
+}
+
+type_init(register_types);
diff --git a/chardev/char.c b/chardev/char.c
index a27199f89b..77162a062b 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -85,12 +85,12 @@
 #include "qemu/sockets.h"
 #include "ui/qemu-spice.h"
 
+#include "char-mux.h"
+
 #define READ_BUF_LEN 4096
 #define READ_RETRIES 10
 #define TCP_MAX_FDS 16
 
-typedef struct MuxChardev MuxChardev;
-
 /***********************************************************/
 /* Socket address helpers */
 
@@ -284,7 +284,7 @@ int qemu_chr_fe_write(CharBackend *be, const uint8_t *buf, int len)
     return ret;
 }
 
-static int qemu_chr_write_all(Chardev *s, const uint8_t *buf, int len)
+int qemu_chr_write_all(Chardev *s, const uint8_t *buf, int len)
 {
     int offset;
     int res;
@@ -482,8 +482,6 @@ void qemu_chr_fe_printf(CharBackend *be, const char *fmt, ...)
 }
 
 static void remove_fd_in_watch(Chardev *chr);
-static void mux_chr_set_handlers(Chardev *chr, GMainContext *context);
-static void mux_set_focus(Chardev *chr, int focus);
 
 static void qemu_char_open(Chardev *chr, ChardevBackend *backend,
                            bool *be_opened, Error **errp)
@@ -560,235 +558,6 @@ static const TypeInfo char_type_info = {
     .class_init = char_class_init,
 };
 
-/* MUX driver for serial I/O splitting */
-#define MAX_MUX 4
-#define MUX_BUFFER_SIZE 32	/* Must be a power of 2.  */
-#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
-struct MuxChardev {
-    Chardev parent;
-    CharBackend *backends[MAX_MUX];
-    CharBackend chr;
-    int focus;
-    int mux_cnt;
-    int term_got_escape;
-    int max_size;
-    /* Intermediate input buffer allows to catch escape sequences even if the
-       currently active device is not accepting any input - but only until it
-       is full as well. */
-    unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
-    int prod[MAX_MUX];
-    int cons[MAX_MUX];
-    int timestamps;
-
-    /* Protected by the Chardev chr_write_lock.  */
-    int linestart;
-    int64_t timestamps_start;
-};
-
-#define MUX_CHARDEV(obj) OBJECT_CHECK(MuxChardev, (obj), TYPE_CHARDEV_MUX)
-
-/* Called with chr_write_lock held.  */
-static int mux_chr_write(Chardev *chr, const uint8_t *buf, int len)
-{
-    MuxChardev *d = MUX_CHARDEV(chr);
-    int ret;
-    if (!d->timestamps) {
-        ret = qemu_chr_fe_write(&d->chr, buf, len);
-    } else {
-        int i;
-
-        ret = 0;
-        for (i = 0; i < len; i++) {
-            if (d->linestart) {
-                char buf1[64];
-                int64_t ti;
-                int secs;
-
-                ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
-                if (d->timestamps_start == -1)
-                    d->timestamps_start = ti;
-                ti -= d->timestamps_start;
-                secs = ti / 1000;
-                snprintf(buf1, sizeof(buf1),
-                         "[%02d:%02d:%02d.%03d] ",
-                         secs / 3600,
-                         (secs / 60) % 60,
-                         secs % 60,
-                         (int)(ti % 1000));
-                /* XXX this blocks entire thread. Rewrite to use
-                 * qemu_chr_fe_write and background I/O callbacks */
-                qemu_chr_fe_write_all(&d->chr,
-                                      (uint8_t *)buf1, strlen(buf1));
-                d->linestart = 0;
-            }
-            ret += qemu_chr_fe_write(&d->chr, buf + i, 1);
-            if (buf[i] == '\n') {
-                d->linestart = 1;
-            }
-        }
-    }
-    return ret;
-}
-
-static const char * const mux_help[] = {
-    "% h    print this help\n\r",
-    "% x    exit emulator\n\r",
-    "% s    save disk data back to file (if -snapshot)\n\r",
-    "% t    toggle console timestamps\n\r",
-    "% b    send break (magic sysrq)\n\r",
-    "% c    switch between console and monitor\n\r",
-    "% %  sends %\n\r",
-    NULL
-};
-
-int term_escape_char = 0x01; /* ctrl-a is used for escape */
-static void mux_print_help(Chardev *chr)
-{
-    int i, j;
-    char ebuf[15] = "Escape-Char";
-    char cbuf[50] = "\n\r";
-
-    if (term_escape_char > 0 && term_escape_char < 26) {
-        snprintf(cbuf, sizeof(cbuf), "\n\r");
-        snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
-    } else {
-        snprintf(cbuf, sizeof(cbuf),
-                 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
-                 term_escape_char);
-    }
-    /* XXX this blocks entire thread. Rewrite to use
-     * qemu_chr_fe_write and background I/O callbacks */
-    qemu_chr_write_all(chr, (uint8_t *)cbuf, strlen(cbuf));
-    for (i = 0; mux_help[i] != NULL; i++) {
-        for (j=0; mux_help[i][j] != '\0'; j++) {
-            if (mux_help[i][j] == '%')
-                qemu_chr_write_all(chr, (uint8_t *)ebuf, strlen(ebuf));
-            else
-                qemu_chr_write_all(chr, (uint8_t *)&mux_help[i][j], 1);
-        }
-    }
-}
-
-static void mux_chr_send_event(MuxChardev *d, int mux_nr, int event)
-{
-    CharBackend *be = d->backends[mux_nr];
-
-    if (be && be->chr_event) {
-        be->chr_event(be->opaque, event);
-    }
-}
-
-static int mux_proc_byte(Chardev *chr, MuxChardev *d, int ch)
-{
-    if (d->term_got_escape) {
-        d->term_got_escape = 0;
-        if (ch == term_escape_char)
-            goto send_char;
-        switch(ch) {
-        case '?':
-        case 'h':
-            mux_print_help(chr);
-            break;
-        case 'x':
-            {
-                 const char *term =  "QEMU: Terminated\n\r";
-                 qemu_chr_write_all(chr, (uint8_t *)term, strlen(term));
-                 exit(0);
-                 break;
-            }
-        case 's':
-            blk_commit_all();
-            break;
-        case 'b':
-            qemu_chr_be_event(chr, CHR_EVENT_BREAK);
-            break;
-        case 'c':
-            assert(d->mux_cnt > 0); /* handler registered with first fe */
-            /* Switch to the next registered device */
-            mux_set_focus(chr, (d->focus + 1) % d->mux_cnt);
-            break;
-        case 't':
-            d->timestamps = !d->timestamps;
-            d->timestamps_start = -1;
-            d->linestart = 0;
-            break;
-        }
-    } else if (ch == term_escape_char) {
-        d->term_got_escape = 1;
-    } else {
-    send_char:
-        return 1;
-    }
-    return 0;
-}
-
-static void mux_chr_accept_input(Chardev *chr)
-{
-    MuxChardev *d = MUX_CHARDEV(chr);
-    int m = d->focus;
-    CharBackend *be = d->backends[m];
-
-    while (be && d->prod[m] != d->cons[m] &&
-           be->chr_can_read && be->chr_can_read(be->opaque)) {
-        be->chr_read(be->opaque,
-                     &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
-    }
-}
-
-static int mux_chr_can_read(void *opaque)
-{
-    MuxChardev *d = MUX_CHARDEV(opaque);
-    int m = d->focus;
-    CharBackend *be = d->backends[m];
-
-    if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE) {
-        return 1;
-    }
-
-    if (be && be->chr_can_read) {
-        return be->chr_can_read(be->opaque);
-    }
-
-    return 0;
-}
-
-static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
-{
-    Chardev *chr = CHARDEV(opaque);
-    MuxChardev *d = MUX_CHARDEV(opaque);
-    int m = d->focus;
-    CharBackend *be = d->backends[m];
-    int i;
-
-    mux_chr_accept_input(opaque);
-
-    for (i = 0; i < size; i++)
-        if (mux_proc_byte(chr, d, buf[i])) {
-            if (d->prod[m] == d->cons[m] &&
-                be && be->chr_can_read &&
-                be->chr_can_read(be->opaque))
-                be->chr_read(be->opaque, &buf[i], 1);
-            else
-                d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
-        }
-}
-
-static bool muxes_realized;
-
-static void mux_chr_event(void *opaque, int event)
-{
-    MuxChardev *d = MUX_CHARDEV(opaque);
-    int i;
-
-    if (!muxes_realized) {
-        return;
-    }
-
-    /* Send the event to all registered listeners */
-    for (i = 0; i < d->mux_cnt; i++)
-        mux_chr_send_event(d, i, event);
-}
-
 /**
  * Called after processing of default and command-line-specified
  * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
@@ -827,85 +596,6 @@ static Notifier muxes_realize_notify = {
     .notify = muxes_realize_done,
 };
 
-static GSource *mux_chr_add_watch(Chardev *s, GIOCondition cond)
-{
-    MuxChardev *d = MUX_CHARDEV(s);
-    Chardev *chr = qemu_chr_fe_get_driver(&d->chr);
-    ChardevClass *cc = CHARDEV_GET_CLASS(chr);
-
-    if (!cc->chr_add_watch) {
-        return NULL;
-    }
-
-    return cc->chr_add_watch(chr, cond);
-}
-
-static void char_mux_finalize(Object *obj)
-{
-    MuxChardev *d = MUX_CHARDEV(obj);
-    int i;
-
-    for (i = 0; i < d->mux_cnt; i++) {
-        CharBackend *be = d->backends[i];
-        if (be) {
-            be->chr = NULL;
-        }
-    }
-    qemu_chr_fe_deinit(&d->chr);
-}
-
-static void mux_chr_set_handlers(Chardev *chr, GMainContext *context)
-{
-    MuxChardev *d = MUX_CHARDEV(chr);
-
-    /* Fix up the real driver with mux routines */
-    qemu_chr_fe_set_handlers(&d->chr,
-                             mux_chr_can_read,
-                             mux_chr_read,
-                             mux_chr_event,
-                             chr,
-                             context, true);
-}
-
-static void mux_set_focus(Chardev *chr, int focus)
-{
-    MuxChardev *d = MUX_CHARDEV(chr);
-
-    assert(focus >= 0);
-    assert(focus < d->mux_cnt);
-
-    if (d->focus != -1) {
-        mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
-    }
-
-    d->focus = focus;
-    chr->be = d->backends[focus];
-    mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
-}
-
-static void qemu_chr_open_mux(Chardev *chr,
-                              ChardevBackend *backend,
-                              bool *be_opened,
-                              Error **errp)
-{
-    ChardevMux *mux = backend->u.mux.data;
-    Chardev *drv;
-    MuxChardev *d = MUX_CHARDEV(chr);
-
-    drv = qemu_chr_find(mux->chardev);
-    if (drv == NULL) {
-        error_setg(errp, "mux: base chardev %s not found", mux->chardev);
-        return;
-    }
-
-    d->focus = -1;
-    /* only default to opened state if we've realized the initial
-     * set of muxes
-     */
-    *be_opened = muxes_realized;
-    qemu_chr_fe_init(&d->chr, drv, errp);
-}
-
 Chardev *qemu_chr_fe_get_driver(CharBackend *be)
 {
     return be->chr;
@@ -3949,41 +3639,6 @@ static const TypeInfo char_memory_type_info = {
     .parent = TYPE_CHARDEV_RINGBUF,
 };
 
-static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
-                               Error **errp)
-{
-    const char *chardev = qemu_opt_get(opts, "chardev");
-    ChardevMux *mux;
-
-    backend->type = CHARDEV_BACKEND_KIND_MUX;
-    if (chardev == NULL) {
-        error_setg(errp, "chardev: mux: no chardev given");
-        return;
-    }
-    mux = backend->u.mux.data = g_new0(ChardevMux, 1);
-    qemu_chr_parse_common(opts, qapi_ChardevMux_base(mux));
-    mux->chardev = g_strdup(chardev);
-}
-
-static void char_mux_class_init(ObjectClass *oc, void *data)
-{
-    ChardevClass *cc = CHARDEV_CLASS(oc);
-
-    cc->parse = qemu_chr_parse_mux;
-    cc->open = qemu_chr_open_mux;
-    cc->chr_write = mux_chr_write;
-    cc->chr_accept_input = mux_chr_accept_input;
-    cc->chr_add_watch = mux_chr_add_watch;
-}
-
-static const TypeInfo char_mux_type_info = {
-    .name = TYPE_CHARDEV_MUX,
-    .parent = TYPE_CHARDEV,
-    .class_init = char_mux_class_init,
-    .instance_size = sizeof(MuxChardev),
-    .instance_finalize = char_mux_finalize,
-};
-
 static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
                                   Error **errp)
 {
@@ -5078,7 +4733,6 @@ static void register_types(void)
     type_register_static(&char_console_type_info);
 #endif
     type_register_static(&char_pipe_type_info);
-    type_register_static(&char_mux_type_info);
     type_register_static(&char_memory_type_info);
 
     /* this must be done after machine init, since we register FEs with muxes
diff --git a/chardev/Makefile.objs b/chardev/Makefile.objs
index be7ff800c3..f1ccc40ae1 100644
--- a/chardev/Makefile.objs
+++ b/chardev/Makefile.objs
@@ -1,2 +1,3 @@
 chardev-obj-y += char.o
+chardev-obj-y += char-mux.o
 chardev-obj-y += char-null.o
-- 
2.11.0

[Qemu-devel] [PATCH 24/40] char: move ringbuf/memory to its own file

[Marc-André Lureau]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 chardev/char-ringbuf.c | 226 +++++++++++++++++++++++++++++++++++++++++++++++++
 chardev/char.c         | 218 -----------------------------------------------
 chardev/Makefile.objs  |   1 +
 3 files changed, 227 insertions(+), 218 deletions(-)
 create mode 100644 chardev/char-ringbuf.c

diff --git a/chardev/char-ringbuf.c b/chardev/char-ringbuf.c
new file mode 100644
index 0000000000..5842612237
--- /dev/null
+++ b/chardev/char-ringbuf.c
@@ -0,0 +1,226 @@
+#include "qemu/osdep.h"
+#include "sysemu/char.h"
+#include "qmp-commands.h"
+#include "qemu/base64.h"
+
+/* Ring buffer chardev */
+
+typedef struct {
+    Chardev parent;
+    size_t size;
+    size_t prod;
+    size_t cons;
+    uint8_t *cbuf;
+} RingBufChardev;
+
+#define RINGBUF_CHARDEV(obj)                                    \
+    OBJECT_CHECK(RingBufChardev, (obj), TYPE_CHARDEV_RINGBUF)
+
+static size_t ringbuf_count(const Chardev *chr)
+{
+    const RingBufChardev *d = RINGBUF_CHARDEV(chr);
+
+    return d->prod - d->cons;
+}
+
+static int ringbuf_chr_write(Chardev *chr, const uint8_t *buf, int len)
+{
+    RingBufChardev *d = RINGBUF_CHARDEV(chr);
+    int i;
+
+    if (!buf || (len < 0)) {
+        return -1;
+    }
+
+    for (i = 0; i < len; i++) {
+        d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
+        if (d->prod - d->cons > d->size) {
+            d->cons = d->prod - d->size;
+        }
+    }
+
+    return len;
+}
+
+static int ringbuf_chr_read(Chardev *chr, uint8_t *buf, int len)
+{
+    RingBufChardev *d = RINGBUF_CHARDEV(chr);
+    int i;
+
+    qemu_mutex_lock(&chr->chr_write_lock);
+    for (i = 0; i < len && d->cons != d->prod; i++) {
+        buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
+    }
+    qemu_mutex_unlock(&chr->chr_write_lock);
+
+    return i;
+}
+
+static void char_ringbuf_finalize(Object *obj)
+{
+    RingBufChardev *d = RINGBUF_CHARDEV(obj);
+
+    g_free(d->cbuf);
+}
+
+static void qemu_chr_open_ringbuf(Chardev *chr,
+                                  ChardevBackend *backend,
+                                  bool *be_opened,
+                                  Error **errp)
+{
+    ChardevRingbuf *opts = backend->u.ringbuf.data;
+    RingBufChardev *d = RINGBUF_CHARDEV(chr);
+
+    d->size = opts->has_size ? opts->size : 65536;
+
+    /* The size must be power of 2 */
+    if (d->size & (d->size - 1)) {
+        error_setg(errp, "size of ringbuf chardev must be power of two");
+        return;
+    }
+
+    d->prod = 0;
+    d->cons = 0;
+    d->cbuf = g_malloc0(d->size);
+}
+
+void qmp_ringbuf_write(const char *device, const char *data,
+                       bool has_format, enum DataFormat format,
+                       Error **errp)
+{
+    Chardev *chr;
+    const uint8_t *write_data;
+    int ret;
+    gsize write_count;
+
+    chr = qemu_chr_find(device);
+    if (!chr) {
+        error_setg(errp, "Device '%s' not found", device);
+        return;
+    }
+
+    if (!CHARDEV_IS_RINGBUF(chr)) {
+        error_setg(errp, "%s is not a ringbuf device", device);
+        return;
+    }
+
+    if (has_format && (format == DATA_FORMAT_BASE64)) {
+        write_data = qbase64_decode(data, -1,
+                                    &write_count,
+                                    errp);
+        if (!write_data) {
+            return;
+        }
+    } else {
+        write_data = (uint8_t *)data;
+        write_count = strlen(data);
+    }
+
+    ret = ringbuf_chr_write(chr, write_data, write_count);
+
+    if (write_data != (uint8_t *)data) {
+        g_free((void *)write_data);
+    }
+
+    if (ret < 0) {
+        error_setg(errp, "Failed to write to device %s", device);
+        return;
+    }
+}
+
+char *qmp_ringbuf_read(const char *device, int64_t size,
+                       bool has_format, enum DataFormat format,
+                       Error **errp)
+{
+    Chardev *chr;
+    uint8_t *read_data;
+    size_t count;
+    char *data;
+
+    chr = qemu_chr_find(device);
+    if (!chr) {
+        error_setg(errp, "Device '%s' not found", device);
+        return NULL;
+    }
+
+    if (!CHARDEV_IS_RINGBUF(chr)) {
+        error_setg(errp, "%s is not a ringbuf device", device);
+        return NULL;
+    }
+
+    if (size <= 0) {
+        error_setg(errp, "size must be greater than zero");
+        return NULL;
+    }
+
+    count = ringbuf_count(chr);
+    size = size > count ? count : size;
+    read_data = g_malloc(size + 1);
+
+    ringbuf_chr_read(chr, read_data, size);
+
+    if (has_format && (format == DATA_FORMAT_BASE64)) {
+        data = g_base64_encode(read_data, size);
+        g_free(read_data);
+    } else {
+        /*
+         * FIXME should read only complete, valid UTF-8 characters up
+         * to @size bytes.  Invalid sequences should be replaced by a
+         * suitable replacement character.  Except when (and only
+         * when) ring buffer lost characters since last read, initial
+         * continuation characters should be dropped.
+         */
+        read_data[size] = 0;
+        data = (char *)read_data;
+    }
+
+    return data;
+}
+
+static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
+                                   Error **errp)
+{
+    int val;
+    ChardevRingbuf *ringbuf;
+
+    backend->type = CHARDEV_BACKEND_KIND_RINGBUF;
+    ringbuf = backend->u.ringbuf.data = g_new0(ChardevRingbuf, 1);
+    qemu_chr_parse_common(opts, qapi_ChardevRingbuf_base(ringbuf));
+
+    val = qemu_opt_get_size(opts, "size", 0);
+    if (val != 0) {
+        ringbuf->has_size = true;
+        ringbuf->size = val;
+    }
+}
+
+static void char_ringbuf_class_init(ObjectClass *oc, void *data)
+{
+    ChardevClass *cc = CHARDEV_CLASS(oc);
+
+    cc->parse = qemu_chr_parse_ringbuf;
+    cc->open = qemu_chr_open_ringbuf;
+    cc->chr_write = ringbuf_chr_write;
+}
+
+static const TypeInfo char_ringbuf_type_info = {
+    .name = TYPE_CHARDEV_RINGBUF,
+    .parent = TYPE_CHARDEV,
+    .class_init = char_ringbuf_class_init,
+    .instance_size = sizeof(RingBufChardev),
+    .instance_finalize = char_ringbuf_finalize,
+};
+
+/* Bug-compatibility: */
+static const TypeInfo char_memory_type_info = {
+    .name = TYPE_CHARDEV_MEMORY,
+    .parent = TYPE_CHARDEV_RINGBUF,
+};
+
+static void register_types(void)
+{
+    type_register_static(&char_ringbuf_type_info);
+    type_register_static(&char_memory_type_info);
+}
+
+type_init(register_types);
diff --git a/chardev/char.c b/chardev/char.c
index 77162a062b..b28f87d010 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -3143,182 +3143,6 @@ static void qemu_chr_socket_connected(Object *src, Error *err, void *opaque)
 }
 
 
-/*********************************************************/
-/* Ring buffer chardev */
-
-typedef struct {
-    Chardev parent;
-    size_t size;
-    size_t prod;
-    size_t cons;
-    uint8_t *cbuf;
-} RingBufChardev;
-
-#define RINGBUF_CHARDEV(obj)                                    \
-    OBJECT_CHECK(RingBufChardev, (obj), TYPE_CHARDEV_RINGBUF)
-
-static size_t ringbuf_count(const Chardev *chr)
-{
-    const RingBufChardev *d = RINGBUF_CHARDEV(chr);
-
-    return d->prod - d->cons;
-}
-
-/* Called with chr_write_lock held.  */
-static int ringbuf_chr_write(Chardev *chr, const uint8_t *buf, int len)
-{
-    RingBufChardev *d = RINGBUF_CHARDEV(chr);
-    int i;
-
-    if (!buf || (len < 0)) {
-        return -1;
-    }
-
-    for (i = 0; i < len; i++ ) {
-        d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
-        if (d->prod - d->cons > d->size) {
-            d->cons = d->prod - d->size;
-        }
-    }
-
-    return len;
-}
-
-static int ringbuf_chr_read(Chardev *chr, uint8_t *buf, int len)
-{
-    RingBufChardev *d = RINGBUF_CHARDEV(chr);
-    int i;
-
-    qemu_mutex_lock(&chr->chr_write_lock);
-    for (i = 0; i < len && d->cons != d->prod; i++) {
-        buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
-    }
-    qemu_mutex_unlock(&chr->chr_write_lock);
-
-    return i;
-}
-
-static void char_ringbuf_finalize(Object *obj)
-{
-    RingBufChardev *d = RINGBUF_CHARDEV(obj);
-
-    g_free(d->cbuf);
-}
-
-static void qemu_chr_open_ringbuf(Chardev *chr,
-                                  ChardevBackend *backend,
-                                  bool *be_opened,
-                                  Error **errp)
-{
-    ChardevRingbuf *opts = backend->u.ringbuf.data;
-    RingBufChardev *d = RINGBUF_CHARDEV(chr);
-
-    d->size = opts->has_size ? opts->size : 65536;
-
-    /* The size must be power of 2 */
-    if (d->size & (d->size - 1)) {
-        error_setg(errp, "size of ringbuf chardev must be power of two");
-        return;
-    }
-
-    d->prod = 0;
-    d->cons = 0;
-    d->cbuf = g_malloc0(d->size);
-}
-
-void qmp_ringbuf_write(const char *device, const char *data,
-                       bool has_format, enum DataFormat format,
-                       Error **errp)
-{
-    Chardev *chr;
-    const uint8_t *write_data;
-    int ret;
-    gsize write_count;
-
-    chr = qemu_chr_find(device);
-    if (!chr) {
-        error_setg(errp, "Device '%s' not found", device);
-        return;
-    }
-
-    if (!CHARDEV_IS_RINGBUF(chr)) {
-        error_setg(errp,"%s is not a ringbuf device", device);
-        return;
-    }
-
-    if (has_format && (format == DATA_FORMAT_BASE64)) {
-        write_data = qbase64_decode(data, -1,
-                                    &write_count,
-                                    errp);
-        if (!write_data) {
-            return;
-        }
-    } else {
-        write_data = (uint8_t *)data;
-        write_count = strlen(data);
-    }
-
-    ret = ringbuf_chr_write(chr, write_data, write_count);
-
-    if (write_data != (uint8_t *)data) {
-        g_free((void *)write_data);
-    }
-
-    if (ret < 0) {
-        error_setg(errp, "Failed to write to device %s", device);
-        return;
-    }
-}
-
-char *qmp_ringbuf_read(const char *device, int64_t size,
-                       bool has_format, enum DataFormat format,
-                       Error **errp)
-{
-    Chardev *chr;
-    uint8_t *read_data;
-    size_t count;
-    char *data;
-
-    chr = qemu_chr_find(device);
-    if (!chr) {
-        error_setg(errp, "Device '%s' not found", device);
-        return NULL;
-    }
-
-    if (!CHARDEV_IS_RINGBUF(chr)) {
-        error_setg(errp,"%s is not a ringbuf device", device);
-        return NULL;
-    }
-
-    if (size <= 0) {
-        error_setg(errp, "size must be greater than zero");
-        return NULL;
-    }
-
-    count = ringbuf_count(chr);
-    size = size > count ? count : size;
-    read_data = g_malloc(size + 1);
-
-    ringbuf_chr_read(chr, read_data, size);
-
-    if (has_format && (format == DATA_FORMAT_BASE64)) {
-        data = g_base64_encode(read_data, size);
-        g_free(read_data);
-    } else {
-        /*
-         * FIXME should read only complete, valid UTF-8 characters up
-         * to @size bytes.  Invalid sequences should be replaced by a
-         * suitable replacement character.  Except when (and only
-         * when) ring buffer lost characters since last read, initial
-         * continuation characters should be dropped.
-         */
-        read_data[size] = 0;
-        data = (char *)read_data;
-    }
-
-    return data;
-}
-
 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
 {
     char host[65], port[33], width[8], height[8];
@@ -3599,46 +3423,6 @@ static const TypeInfo char_pipe_type_info = {
     .class_init = char_pipe_class_init,
 };
 
-static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
-                                   Error **errp)
-{
-    int val;
-    ChardevRingbuf *ringbuf;
-
-    backend->type = CHARDEV_BACKEND_KIND_RINGBUF;
-    ringbuf = backend->u.ringbuf.data = g_new0(ChardevRingbuf, 1);
-    qemu_chr_parse_common(opts, qapi_ChardevRingbuf_base(ringbuf));
-
-    val = qemu_opt_get_size(opts, "size", 0);
-    if (val != 0) {
-        ringbuf->has_size = true;
-        ringbuf->size = val;
-    }
-}
-
-static void char_ringbuf_class_init(ObjectClass *oc, void *data)
-{
-    ChardevClass *cc = CHARDEV_CLASS(oc);
-
-    cc->parse = qemu_chr_parse_ringbuf;
-    cc->open = qemu_chr_open_ringbuf;
-    cc->chr_write = ringbuf_chr_write;
-}
-
-static const TypeInfo char_ringbuf_type_info = {
-    .name = TYPE_CHARDEV_RINGBUF,
-    .parent = TYPE_CHARDEV,
-    .class_init = char_ringbuf_class_init,
-    .instance_size = sizeof(RingBufChardev),
-    .instance_finalize = char_ringbuf_finalize,
-};
-
-/* Bug-compatibility: */
-static const TypeInfo char_memory_type_info = {
-    .name = TYPE_CHARDEV_MEMORY,
-    .parent = TYPE_CHARDEV_RINGBUF,
-};
-
 static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
                                   Error **errp)
 {
@@ -4717,7 +4501,6 @@ static void register_types(void)
 #endif
     type_register_static(&char_socket_type_info);
     type_register_static(&char_udp_type_info);
-    type_register_static(&char_ringbuf_type_info);
     type_register_static(&char_file_type_info);
     type_register_static(&char_stdio_type_info);
 #ifdef HAVE_CHARDEV_SERIAL
@@ -4733,7 +4516,6 @@ static void register_types(void)
     type_register_static(&char_console_type_info);
 #endif
     type_register_static(&char_pipe_type_info);
-    type_register_static(&char_memory_type_info);
 
     /* this must be done after machine init, since we register FEs with muxes
      * as part of realize functions like serial_isa_realizefn when -nographic
diff --git a/chardev/Makefile.objs b/chardev/Makefile.objs
index f1ccc40ae1..d4ffb8d70e 100644
--- a/chardev/Makefile.objs
+++ b/chardev/Makefile.objs
@@ -1,3 +1,4 @@
 chardev-obj-y += char.o
 chardev-obj-y += char-mux.o
 chardev-obj-y += char-null.o
+chardev-obj-y += char-ringbuf.o
-- 
2.11.0

[Qemu-devel] [PATCH 25/40] char: rename and move to header CHR_READ_BUF_LEN

[Marc-André Lureau]

This define is used by several character devices, place it in char
common header.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 include/sysemu/char.h |  1 +
 chardev/char.c        | 13 ++++++-------
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/include/sysemu/char.h b/include/sysemu/char.h
index 1e1f5c7b2b..1a65798e3e 100644
--- a/include/sysemu/char.h
+++ b/include/sysemu/char.h
@@ -22,6 +22,7 @@ typedef enum {
     CHR_EVENT_CLOSED /* connection closed */
 } QEMUChrEvent;
 
+#define CHR_READ_BUF_LEN 4096
 
 #define CHR_IOCTL_SERIAL_SET_PARAMS   1
 typedef struct {
diff --git a/chardev/char.c b/chardev/char.c
index b28f87d010..f710a01c9b 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -87,7 +87,6 @@
 
 #include "char-mux.h"
 
-#define READ_BUF_LEN 4096
 #define READ_RETRIES 10
 #define TCP_MAX_FDS 16
 
@@ -471,7 +470,7 @@ void qemu_chr_fe_accept_input(CharBackend *be)
 
 void qemu_chr_fe_printf(CharBackend *be, const char *fmt, ...)
 {
-    char buf[READ_BUF_LEN];
+    char buf[CHR_READ_BUF_LEN];
     va_list ap;
     va_start(ap, fmt);
     vsnprintf(buf, sizeof(buf), fmt, ap);
@@ -913,7 +912,7 @@ static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
     Chardev *chr = CHARDEV(opaque);
     FDChardev *s = FD_CHARDEV(opaque);
     int len;
-    uint8_t buf[READ_BUF_LEN];
+    uint8_t buf[CHR_READ_BUF_LEN];
     ssize_t ret;
 
     len = sizeof(buf);
@@ -1265,7 +1264,7 @@ static gboolean pty_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
     Chardev *chr = CHARDEV(opaque);
     PtyChardev *s = PTY_CHARDEV(opaque);
     gsize len;
-    uint8_t buf[READ_BUF_LEN];
+    uint8_t buf[CHR_READ_BUF_LEN];
     ssize_t ret;
 
     len = sizeof(buf);
@@ -1952,7 +1951,7 @@ static void win_chr_readfile(Chardev *chr)
     WinChardev *s = WIN_CHARDEV(chr);
 
     int ret, err;
-    uint8_t buf[READ_BUF_LEN];
+    uint8_t buf[CHR_READ_BUF_LEN];
     DWORD size;
 
     ZeroMemory(&s->orecv, sizeof(s->orecv));
@@ -2354,7 +2353,7 @@ err1:
 typedef struct {
     Chardev parent;
     QIOChannel *ioc;
-    uint8_t buf[READ_BUF_LEN];
+    uint8_t buf[CHR_READ_BUF_LEN];
     int bufcnt;
     int bufptr;
     int max_size;
@@ -2759,7 +2758,7 @@ static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
 {
     Chardev *chr = CHARDEV(opaque);
     SocketChardev *s = SOCKET_CHARDEV(opaque);
-    uint8_t buf[READ_BUF_LEN];
+    uint8_t buf[CHR_READ_BUF_LEN];
     int len, size;
 
     if (!s->connected || s->max_size <= 0) {
-- 
2.11.0

[Qemu-devel] [PATCH 26/40] char: remove unused READ_RETRIES

[Marc-André Lureau]

Curiously unused since its introduction in commit 7b0bfdf52d69.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 chardev/char.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/chardev/char.c b/chardev/char.c
index f710a01c9b..ea8903c0d7 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -87,7 +87,6 @@
 
 #include "char-mux.h"
 
-#define READ_RETRIES 10
 #define TCP_MAX_FDS 16
 
 /***********************************************************/
-- 
2.11.0

[Qemu-devel] [PATCH 27/40] char: move QIOChannel-related in char-io.h

[Marc-André Lureau]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 chardev/char-io.h     |  24 +++++++
 chardev/char-io.c     | 168 ++++++++++++++++++++++++++++++++++++++++++++++++
 chardev/char.c        | 174 +-------------------------------------------------
 chardev/Makefile.objs |   1 +
 4 files changed, 194 insertions(+), 173 deletions(-)
 create mode 100644 chardev/char-io.h
 create mode 100644 chardev/char-io.c

diff --git a/chardev/char-io.h b/chardev/char-io.h
new file mode 100644
index 0000000000..ea559fd124
--- /dev/null
+++ b/chardev/char-io.h
@@ -0,0 +1,24 @@
+#ifndef CHAR_IO_H
+#define CHAR_IO_H
+
+#include "qemu/osdep.h"
+#include "qemu-common.h"
+#include "io/channel.h"
+#include "sysemu/char.h"
+
+/* Can only be used for read */
+guint io_add_watch_poll(Chardev *chr,
+                        QIOChannel *ioc,
+                        IOCanReadHandler *fd_can_read,
+                        QIOChannelFunc fd_read,
+                        gpointer user_data,
+                        GMainContext *context);
+
+void remove_fd_in_watch(Chardev *chr);
+
+int io_channel_send(QIOChannel *ioc, const void *buf, size_t len);
+
+int io_channel_send_full(QIOChannel *ioc, const void *buf, size_t len,
+                         int *fds, size_t nfds);
+
+#endif /* CHAR_IO_H */
diff --git a/chardev/char-io.c b/chardev/char-io.c
new file mode 100644
index 0000000000..82bc721d1a
--- /dev/null
+++ b/chardev/char-io.c
@@ -0,0 +1,168 @@
+#include "char-io.h"
+
+typedef struct IOWatchPoll {
+    GSource parent;
+
+    QIOChannel *ioc;
+    GSource *src;
+
+    IOCanReadHandler *fd_can_read;
+    GSourceFunc fd_read;
+    void *opaque;
+    GMainContext *context;
+} IOWatchPoll;
+
+static IOWatchPoll *io_watch_poll_from_source(GSource *source)
+{
+    return container_of(source, IOWatchPoll, parent);
+}
+
+static gboolean io_watch_poll_prepare(GSource *source,
+                                      gint *timeout_)
+{
+    IOWatchPoll *iwp = io_watch_poll_from_source(source);
+    bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
+    bool was_active = iwp->src != NULL;
+    if (was_active == now_active) {
+        return FALSE;
+    }
+
+    if (now_active) {
+        iwp->src = qio_channel_create_watch(
+            iwp->ioc, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL);
+        g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
+        g_source_attach(iwp->src, iwp->context);
+    } else {
+        g_source_destroy(iwp->src);
+        g_source_unref(iwp->src);
+        iwp->src = NULL;
+    }
+    return FALSE;
+}
+
+static gboolean io_watch_poll_check(GSource *source)
+{
+    return FALSE;
+}
+
+static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
+                                       gpointer user_data)
+{
+    abort();
+}
+
+static void io_watch_poll_finalize(GSource *source)
+{
+    /* Due to a glib bug, removing the last reference to a source
+     * inside a finalize callback causes recursive locking (and a
+     * deadlock).  This is not a problem inside other callbacks,
+     * including dispatch callbacks, so we call io_remove_watch_poll
+     * to remove this source.  At this point, iwp->src must
+     * be NULL, or we would leak it.
+     *
+     * This would be solved much more elegantly by child sources,
+     * but we support older glib versions that do not have them.
+     */
+    IOWatchPoll *iwp = io_watch_poll_from_source(source);
+    assert(iwp->src == NULL);
+}
+
+static GSourceFuncs io_watch_poll_funcs = {
+    .prepare = io_watch_poll_prepare,
+    .check = io_watch_poll_check,
+    .dispatch = io_watch_poll_dispatch,
+    .finalize = io_watch_poll_finalize,
+};
+
+guint io_add_watch_poll(Chardev *chr,
+                        QIOChannel *ioc,
+                        IOCanReadHandler *fd_can_read,
+                        QIOChannelFunc fd_read,
+                        gpointer user_data,
+                        GMainContext *context)
+{
+    IOWatchPoll *iwp;
+    int tag;
+    char *name;
+
+    iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs,
+                                       sizeof(IOWatchPoll));
+    iwp->fd_can_read = fd_can_read;
+    iwp->opaque = user_data;
+    iwp->ioc = ioc;
+    iwp->fd_read = (GSourceFunc) fd_read;
+    iwp->src = NULL;
+    iwp->context = context;
+
+    name = g_strdup_printf("chardev-iowatch-%s", chr->label);
+    g_source_set_name((GSource *)iwp, name);
+    g_free(name);
+
+    tag = g_source_attach(&iwp->parent, context);
+    g_source_unref(&iwp->parent);
+    return tag;
+}
+
+static void io_remove_watch_poll(guint tag)
+{
+    GSource *source;
+    IOWatchPoll *iwp;
+
+    g_return_if_fail(tag > 0);
+
+    source = g_main_context_find_source_by_id(NULL, tag);
+    g_return_if_fail(source != NULL);
+
+    iwp = io_watch_poll_from_source(source);
+    if (iwp->src) {
+        g_source_destroy(iwp->src);
+        g_source_unref(iwp->src);
+        iwp->src = NULL;
+    }
+    g_source_destroy(&iwp->parent);
+}
+
+void remove_fd_in_watch(Chardev *chr)
+{
+    if (chr->fd_in_tag) {
+        io_remove_watch_poll(chr->fd_in_tag);
+        chr->fd_in_tag = 0;
+    }
+}
+
+int io_channel_send_full(QIOChannel *ioc,
+                         const void *buf, size_t len,
+                         int *fds, size_t nfds)
+{
+    size_t offset = 0;
+
+    while (offset < len) {
+        ssize_t ret = 0;
+        struct iovec iov = { .iov_base = (char *)buf + offset,
+                             .iov_len = len - offset };
+
+        ret = qio_channel_writev_full(
+            ioc, &iov, 1,
+            fds, nfds, NULL);
+        if (ret == QIO_CHANNEL_ERR_BLOCK) {
+            if (offset) {
+                return offset;
+            }
+
+            errno = EAGAIN;
+            return -1;
+        } else if (ret < 0) {
+            errno = EINVAL;
+            return -1;
+        }
+
+        offset += ret;
+    }
+
+    return offset;
+}
+
+int io_channel_send(QIOChannel *ioc, const void *buf, size_t len)
+{
+    return io_channel_send_full(ioc, buf, len, NULL, 0);
+}
diff --git a/chardev/char.c b/chardev/char.c
index ea8903c0d7..c8448cf489 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -86,6 +86,7 @@
 #include "ui/qemu-spice.h"
 
 #include "char-mux.h"
+#include "char-io.h"
 
 #define TCP_MAX_FDS 16
 
@@ -479,8 +480,6 @@ void qemu_chr_fe_printf(CharBackend *be, const char *fmt, ...)
     va_end(ap);
 }
 
-static void remove_fd_in_watch(Chardev *chr);
-
 static void qemu_char_open(Chardev *chr, ChardevBackend *backend,
                            bool *be_opened, Error **errp)
 {
@@ -716,178 +715,7 @@ void qemu_chr_fe_take_focus(CharBackend *b)
     }
 }
 
-typedef struct IOWatchPoll
-{
-    GSource parent;
-
-    QIOChannel *ioc;
-    GSource *src;
-
-    IOCanReadHandler *fd_can_read;
-    GSourceFunc fd_read;
-    void *opaque;
-    GMainContext *context;
-} IOWatchPoll;
-
-static IOWatchPoll *io_watch_poll_from_source(GSource *source)
-{
-    return container_of(source, IOWatchPoll, parent);
-}
-
-static gboolean io_watch_poll_prepare(GSource *source,
-                                      gint *timeout_)
-{
-    IOWatchPoll *iwp = io_watch_poll_from_source(source);
-    bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
-    bool was_active = iwp->src != NULL;
-    if (was_active == now_active) {
-        return FALSE;
-    }
-
-    if (now_active) {
-        iwp->src = qio_channel_create_watch(
-            iwp->ioc, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL);
-        g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
-        g_source_attach(iwp->src, iwp->context);
-    } else {
-        g_source_destroy(iwp->src);
-        g_source_unref(iwp->src);
-        iwp->src = NULL;
-    }
-    return FALSE;
-}
-
-static gboolean io_watch_poll_check(GSource *source)
-{
-    return FALSE;
-}
-
-static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
-                                       gpointer user_data)
-{
-    abort();
-}
-
-static void io_watch_poll_finalize(GSource *source)
-{
-    /* Due to a glib bug, removing the last reference to a source
-     * inside a finalize callback causes recursive locking (and a
-     * deadlock).  This is not a problem inside other callbacks,
-     * including dispatch callbacks, so we call io_remove_watch_poll
-     * to remove this source.  At this point, iwp->src must
-     * be NULL, or we would leak it.
-     *
-     * This would be solved much more elegantly by child sources,
-     * but we support older glib versions that do not have them.
-     */
-    IOWatchPoll *iwp = io_watch_poll_from_source(source);
-    assert(iwp->src == NULL);
-}
-
-static GSourceFuncs io_watch_poll_funcs = {
-    .prepare = io_watch_poll_prepare,
-    .check = io_watch_poll_check,
-    .dispatch = io_watch_poll_dispatch,
-    .finalize = io_watch_poll_finalize,
-};
-
-/* Can only be used for read */
-static guint io_add_watch_poll(Chardev *chr,
-                               QIOChannel *ioc,
-                               IOCanReadHandler *fd_can_read,
-                               QIOChannelFunc fd_read,
-                               gpointer user_data,
-                               GMainContext *context)
-{
-    IOWatchPoll *iwp;
-    int tag;
-    char *name;
-
-    iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs,
-                                       sizeof(IOWatchPoll));
-    iwp->fd_can_read = fd_can_read;
-    iwp->opaque = user_data;
-    iwp->ioc = ioc;
-    iwp->fd_read = (GSourceFunc) fd_read;
-    iwp->src = NULL;
-    iwp->context = context;
-
-    name = g_strdup_printf("chardev-iowatch-%s", chr->label);
-    g_source_set_name((GSource *)iwp, name);
-    g_free(name);
-
-    tag = g_source_attach(&iwp->parent, context);
-    g_source_unref(&iwp->parent);
-    return tag;
-}
-
-static void io_remove_watch_poll(guint tag)
-{
-    GSource *source;
-    IOWatchPoll *iwp;
-
-    g_return_if_fail (tag > 0);
-
-    source = g_main_context_find_source_by_id(NULL, tag);
-    g_return_if_fail (source != NULL);
-
-    iwp = io_watch_poll_from_source(source);
-    if (iwp->src) {
-        g_source_destroy(iwp->src);
-        g_source_unref(iwp->src);
-        iwp->src = NULL;
-    }
-    g_source_destroy(&iwp->parent);
-}
-
-static void remove_fd_in_watch(Chardev *chr)
-{
-    if (chr->fd_in_tag) {
-        io_remove_watch_poll(chr->fd_in_tag);
-        chr->fd_in_tag = 0;
-    }
-}
-
-
-static int io_channel_send_full(QIOChannel *ioc,
-                                const void *buf, size_t len,
-                                int *fds, size_t nfds)
-{
-    size_t offset = 0;
-
-    while (offset < len) {
-        ssize_t ret = 0;
-        struct iovec iov = { .iov_base = (char *)buf + offset,
-                             .iov_len = len - offset };
-
-        ret = qio_channel_writev_full(
-            ioc, &iov, 1,
-            fds, nfds, NULL);
-        if (ret == QIO_CHANNEL_ERR_BLOCK) {
-            if (offset) {
-                return offset;
-            }
-
-            errno = EAGAIN;
-            return -1;
-        } else if (ret < 0) {
-            errno = EINVAL;
-            return -1;
-        }
-
-        offset += ret;
-    }
-
-    return offset;
-}
-
-
 #ifndef _WIN32
-static int io_channel_send(QIOChannel *ioc, const void *buf, size_t len)
-{
-    return io_channel_send_full(ioc, buf, len, NULL, 0);
-}
-
 typedef struct FDChardev {
     Chardev parent;
     Chardev *chr;
diff --git a/chardev/Makefile.objs b/chardev/Makefile.objs
index d4ffb8d70e..5f5d3716ac 100644
--- a/chardev/Makefile.objs
+++ b/chardev/Makefile.objs
@@ -1,4 +1,5 @@
 chardev-obj-y += char.o
+chardev-obj-y += char-io.o
 chardev-obj-y += char-mux.o
 chardev-obj-y += char-null.o
 chardev-obj-y += char-ringbuf.o
-- 
2.11.0

[Qemu-devel] [PATCH 28/40] char: move fd chardev in its own file

[Marc-André Lureau]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 chardev/char-fd.h     |  21 ++++++++
 chardev/char-fd.c     | 147 ++++++++++++++++++++++++++++++++++++++++++++++++++
 chardev/char.c        | 147 +-------------------------------------------------
 chardev/Makefile.objs |   1 +
 4 files changed, 171 insertions(+), 145 deletions(-)
 create mode 100644 chardev/char-fd.h
 create mode 100644 chardev/char-fd.c

diff --git a/chardev/char-fd.h b/chardev/char-fd.h
new file mode 100644
index 0000000000..beef7c111a
--- /dev/null
+++ b/chardev/char-fd.h
@@ -0,0 +1,21 @@
+#ifndef CHAR_FD_H
+#define CHAR_FD_H
+
+#include "io/channel.h"
+#include "sysemu/char.h"
+
+typedef struct FDChardev {
+    Chardev parent;
+    Chardev *chr;
+    QIOChannel *ioc_in, *ioc_out;
+    int max_size;
+} FDChardev;
+
+#define TYPE_CHARDEV_FD "chardev-fd"
+
+#define FD_CHARDEV(obj) OBJECT_CHECK(FDChardev, (obj), TYPE_CHARDEV_FD)
+
+void qemu_chr_open_fd(Chardev *chr, int fd_in, int fd_out);
+int qmp_chardev_open_file_source(char *src, int flags, Error **errp);
+
+#endif /* CHAR_FD_H */
diff --git a/chardev/char-fd.c b/chardev/char-fd.c
new file mode 100644
index 0000000000..0328c9335c
--- /dev/null
+++ b/chardev/char-fd.c
@@ -0,0 +1,147 @@
+#include "qemu/osdep.h"
+#include "qemu/sockets.h"
+#include "qapi/error.h"
+#include "qemu-common.h"
+#include "sysemu/char.h"
+#include "io/channel-file.h"
+
+#include "char-fd.h"
+#include "char-io.h"
+
+/* Called with chr_write_lock held.  */
+static int fd_chr_write(Chardev *chr, const uint8_t *buf, int len)
+{
+    FDChardev *s = FD_CHARDEV(chr);
+
+    return io_channel_send(s->ioc_out, buf, len);
+}
+
+static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
+{
+    Chardev *chr = CHARDEV(opaque);
+    FDChardev *s = FD_CHARDEV(opaque);
+    int len;
+    uint8_t buf[CHR_READ_BUF_LEN];
+    ssize_t ret;
+
+    len = sizeof(buf);
+    if (len > s->max_size) {
+        len = s->max_size;
+    }
+    if (len == 0) {
+        return TRUE;
+    }
+
+    ret = qio_channel_read(
+        chan, (gchar *)buf, len, NULL);
+    if (ret == 0) {
+        remove_fd_in_watch(chr);
+        qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
+        return FALSE;
+    }
+    if (ret > 0) {
+        qemu_chr_be_write(chr, buf, ret);
+    }
+
+    return TRUE;
+}
+
+static int fd_chr_read_poll(void *opaque)
+{
+    Chardev *chr = CHARDEV(opaque);
+    FDChardev *s = FD_CHARDEV(opaque);
+
+    s->max_size = qemu_chr_be_can_write(chr);
+    return s->max_size;
+}
+
+static GSource *fd_chr_add_watch(Chardev *chr, GIOCondition cond)
+{
+    FDChardev *s = FD_CHARDEV(chr);
+    return qio_channel_create_watch(s->ioc_out, cond);
+}
+
+static void fd_chr_update_read_handler(Chardev *chr,
+                                       GMainContext *context)
+{
+    FDChardev *s = FD_CHARDEV(chr);
+
+    remove_fd_in_watch(chr);
+    if (s->ioc_in) {
+        chr->fd_in_tag = io_add_watch_poll(chr, s->ioc_in,
+                                           fd_chr_read_poll,
+                                           fd_chr_read, chr,
+                                           context);
+    }
+}
+
+static void char_fd_finalize(Object *obj)
+{
+    Chardev *chr = CHARDEV(obj);
+    FDChardev *s = FD_CHARDEV(obj);
+
+    remove_fd_in_watch(chr);
+    if (s->ioc_in) {
+        object_unref(OBJECT(s->ioc_in));
+    }
+    if (s->ioc_out) {
+        object_unref(OBJECT(s->ioc_out));
+    }
+
+    qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
+}
+
+int qmp_chardev_open_file_source(char *src, int flags, Error **errp)
+{
+    int fd = -1;
+
+    TFR(fd = qemu_open(src, flags, 0666));
+    if (fd == -1) {
+        error_setg_file_open(errp, errno, src);
+    }
+    return fd;
+}
+
+/* open a character device to a unix fd */
+void qemu_chr_open_fd(Chardev *chr,
+                      int fd_in, int fd_out)
+{
+    FDChardev *s = FD_CHARDEV(chr);
+    char *name;
+
+    s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in));
+    name = g_strdup_printf("chardev-file-in-%s", chr->label);
+    qio_channel_set_name(QIO_CHANNEL(s->ioc_in), name);
+    g_free(name);
+    s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out));
+    name = g_strdup_printf("chardev-file-out-%s", chr->label);
+    qio_channel_set_name(QIO_CHANNEL(s->ioc_out), name);
+    g_free(name);
+    qemu_set_nonblock(fd_out);
+    s->chr = chr;
+}
+
+static void char_fd_class_init(ObjectClass *oc, void *data)
+{
+    ChardevClass *cc = CHARDEV_CLASS(oc);
+
+    cc->chr_add_watch = fd_chr_add_watch;
+    cc->chr_write = fd_chr_write;
+    cc->chr_update_read_handler = fd_chr_update_read_handler;
+}
+
+static const TypeInfo char_fd_type_info = {
+    .name = TYPE_CHARDEV_FD,
+    .parent = TYPE_CHARDEV,
+    .instance_size = sizeof(FDChardev),
+    .instance_finalize = char_fd_finalize,
+    .class_init = char_fd_class_init,
+    .abstract = true,
+};
+
+static void register_types(void)
+{
+    type_register_static(&char_fd_type_info);
+}
+
+type_init(register_types);
diff --git a/chardev/char.c b/chardev/char.c
index c8448cf489..5391667f09 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -86,6 +86,7 @@
 #include "ui/qemu-spice.h"
 
 #include "char-mux.h"
+#include "char-fd.h"
 #include "char-io.h"
 
 #define TCP_MAX_FDS 16
@@ -716,136 +717,6 @@ void qemu_chr_fe_take_focus(CharBackend *b)
 }
 
 #ifndef _WIN32
-typedef struct FDChardev {
-    Chardev parent;
-    Chardev *chr;
-    QIOChannel *ioc_in, *ioc_out;
-    int max_size;
-} FDChardev;
-
-#define TYPE_CHARDEV_FD "chardev-fd"
-#define FD_CHARDEV(obj) OBJECT_CHECK(FDChardev, (obj), TYPE_CHARDEV_FD)
-
-/* Called with chr_write_lock held.  */
-static int fd_chr_write(Chardev *chr, const uint8_t *buf, int len)
-{
-    FDChardev *s = FD_CHARDEV(chr);
-
-    return io_channel_send(s->ioc_out, buf, len);
-}
-
-static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
-{
-    Chardev *chr = CHARDEV(opaque);
-    FDChardev *s = FD_CHARDEV(opaque);
-    int len;
-    uint8_t buf[CHR_READ_BUF_LEN];
-    ssize_t ret;
-
-    len = sizeof(buf);
-    if (len > s->max_size) {
-        len = s->max_size;
-    }
-    if (len == 0) {
-        return TRUE;
-    }
-
-    ret = qio_channel_read(
-        chan, (gchar *)buf, len, NULL);
-    if (ret == 0) {
-        remove_fd_in_watch(chr);
-        qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
-        return FALSE;
-    }
-    if (ret > 0) {
-        qemu_chr_be_write(chr, buf, ret);
-    }
-
-    return TRUE;
-}
-
-static int fd_chr_read_poll(void *opaque)
-{
-    Chardev *chr = CHARDEV(opaque);
-    FDChardev *s = FD_CHARDEV(opaque);
-
-    s->max_size = qemu_chr_be_can_write(chr);
-    return s->max_size;
-}
-
-static GSource *fd_chr_add_watch(Chardev *chr, GIOCondition cond)
-{
-    FDChardev *s = FD_CHARDEV(chr);
-    return qio_channel_create_watch(s->ioc_out, cond);
-}
-
-static void fd_chr_update_read_handler(Chardev *chr,
-                                       GMainContext *context)
-{
-    FDChardev *s = FD_CHARDEV(chr);
-
-    remove_fd_in_watch(chr);
-    if (s->ioc_in) {
-        chr->fd_in_tag = io_add_watch_poll(chr, s->ioc_in,
-                                           fd_chr_read_poll,
-                                           fd_chr_read, chr,
-                                           context);
-    }
-}
-
-static void char_fd_finalize(Object *obj)
-{
-    Chardev *chr = CHARDEV(obj);
-    FDChardev *s = FD_CHARDEV(obj);
-
-    remove_fd_in_watch(chr);
-    if (s->ioc_in) {
-        object_unref(OBJECT(s->ioc_in));
-    }
-    if (s->ioc_out) {
-        object_unref(OBJECT(s->ioc_out));
-    }
-
-    qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
-}
-
-/* open a character device to a unix fd */
-static void qemu_chr_open_fd(Chardev *chr,
-                             int fd_in, int fd_out)
-{
-    FDChardev *s = FD_CHARDEV(chr);
-    char *name;
-
-    s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in));
-    name = g_strdup_printf("chardev-file-in-%s", chr->label);
-    qio_channel_set_name(QIO_CHANNEL(s->ioc_in), name);
-    g_free(name);
-    s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out));
-    name = g_strdup_printf("chardev-file-out-%s", chr->label);
-    qio_channel_set_name(QIO_CHANNEL(s->ioc_out), name);
-    g_free(name);
-    qemu_set_nonblock(fd_out);
-    s->chr = chr;
-}
-
-static void char_fd_class_init(ObjectClass *oc, void *data)
-{
-    ChardevClass *cc = CHARDEV_CLASS(oc);
-
-    cc->chr_add_watch = fd_chr_add_watch;
-    cc->chr_write = fd_chr_write;
-    cc->chr_update_read_handler = fd_chr_update_read_handler;
-}
-
-static const TypeInfo char_fd_type_info = {
-    .name = TYPE_CHARDEV_FD,
-    .parent = TYPE_CHARDEV,
-    .instance_size = sizeof(FDChardev),
-    .instance_finalize = char_fd_finalize,
-    .class_init = char_fd_class_init,
-    .abstract = true,
-};
-
 static void qemu_chr_open_pipe(Chardev *chr,
                                ChardevBackend *backend,
                                bool *be_opened,
@@ -3852,18 +3723,6 @@ static void qmp_chardev_open_serial(Chardev *chr,
 
 #else /* WIN32 */
 
-static int qmp_chardev_open_file_source(char *src, int flags,
-                                        Error **errp)
-{
-    int fd = -1;
-
-    TFR(fd = qemu_open(src, flags, 0666));
-    if (fd == -1) {
-        error_setg_file_open(errp, errno, src);
-    }
-    return fd;
-}
-
 static void qmp_chardev_open_file(Chardev *chr,
                                   ChardevBackend *backend,
                                   bool *be_opened,
@@ -4319,9 +4178,7 @@ void qemu_chr_cleanup(void)
 static void register_types(void)
 {
     type_register_static(&char_type_info);
-#ifndef _WIN32
-    type_register_static(&char_fd_type_info);
-#else
+#ifdef _WIN32
     type_register_static(&char_win_type_info);
     type_register_static(&char_win_stdio_type_info);
 #endif
diff --git a/chardev/Makefile.objs b/chardev/Makefile.objs
index 5f5d3716ac..d2f03dc5df 100644
--- a/chardev/Makefile.objs
+++ b/chardev/Makefile.objs
@@ -1,4 +1,5 @@
 chardev-obj-y += char.o
+chardev-obj-$(CONFIG_POSIX) += char-fd.o
 chardev-obj-y += char-io.o
 chardev-obj-y += char-mux.o
 chardev-obj-y += char-null.o
-- 
2.11.0

[Qemu-devel] [PATCH 29/40] char: move win chardev base class in its own file

[Marc-André Lureau]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 chardev/char-win.h    |  30 ++++++
 chardev/char-win.c    | 242 +++++++++++++++++++++++++++++++++++++++++++++++
 chardev/char.c        | 253 +-------------------------------------------------
 chardev/Makefile.objs |   1 +
 4 files changed, 276 insertions(+), 250 deletions(-)
 create mode 100644 chardev/char-win.h
 create mode 100644 chardev/char-win.c

diff --git a/chardev/char-win.h b/chardev/char-win.h
new file mode 100644
index 0000000000..e91b5004ab
--- /dev/null
+++ b/chardev/char-win.h
@@ -0,0 +1,30 @@
+#ifndef CHAR_WIN_H
+#define CHAR_WIN_H
+
+#include "sysemu/char.h"
+
+typedef struct {
+    Chardev parent;
+    int max_size;
+    HANDLE hcom, hrecv, hsend;
+    OVERLAPPED orecv;
+    BOOL fpipe;
+    DWORD len;
+
+    /* Protected by the Chardev chr_write_lock.  */
+    OVERLAPPED osend;
+    /* FIXME: file/console do not finalize */
+    BOOL skip_free;
+} WinChardev;
+
+#define NSENDBUF 2048
+#define NRECVBUF 2048
+
+#define TYPE_CHARDEV_WIN "chardev-win"
+#define WIN_CHARDEV(obj) OBJECT_CHECK(WinChardev, (obj), TYPE_CHARDEV_WIN)
+
+void qemu_chr_open_win_file(Chardev *chr, HANDLE fd_out);
+int win_chr_init(Chardev *chr, const char *filename, Error **errp);
+int win_chr_pipe_poll(void *opaque);
+
+#endif /* CHAR_WIN_H */
diff --git a/chardev/char-win.c b/chardev/char-win.c
new file mode 100644
index 0000000000..7d7bb0267d
--- /dev/null
+++ b/chardev/char-win.c
@@ -0,0 +1,242 @@
+#include "qemu/osdep.h"
+#include "qemu-common.h"
+#include "qapi/error.h"
+#include "char-win.h"
+
+static void win_chr_readfile(Chardev *chr)
+{
+    WinChardev *s = WIN_CHARDEV(chr);
+
+    int ret, err;
+    uint8_t buf[CHR_READ_BUF_LEN];
+    DWORD size;
+
+    ZeroMemory(&s->orecv, sizeof(s->orecv));
+    s->orecv.hEvent = s->hrecv;
+    ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
+    if (!ret) {
+        err = GetLastError();
+        if (err == ERROR_IO_PENDING) {
+            ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
+        }
+    }
+
+    if (size > 0) {
+        qemu_chr_be_write(chr, buf, size);
+    }
+}
+
+static void win_chr_read(Chardev *chr)
+{
+    WinChardev *s = WIN_CHARDEV(chr);
+
+    if (s->len > s->max_size) {
+        s->len = s->max_size;
+    }
+    if (s->len == 0) {
+        return;
+    }
+
+    win_chr_readfile(chr);
+}
+
+static int win_chr_read_poll(Chardev *chr)
+{
+    WinChardev *s = WIN_CHARDEV(chr);
+
+    s->max_size = qemu_chr_be_can_write(chr);
+    return s->max_size;
+}
+
+static int win_chr_poll(void *opaque)
+{
+    Chardev *chr = CHARDEV(opaque);
+    WinChardev *s = WIN_CHARDEV(opaque);
+    COMSTAT status;
+    DWORD comerr;
+
+    ClearCommError(s->hcom, &comerr, &status);
+    if (status.cbInQue > 0) {
+        s->len = status.cbInQue;
+        win_chr_read_poll(chr);
+        win_chr_read(chr);
+        return 1;
+    }
+    return 0;
+}
+
+int win_chr_init(Chardev *chr, const char *filename, Error **errp)
+{
+    WinChardev *s = WIN_CHARDEV(chr);
+    COMMCONFIG comcfg;
+    COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
+    COMSTAT comstat;
+    DWORD size;
+    DWORD err;
+
+    s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
+    if (!s->hsend) {
+        error_setg(errp, "Failed CreateEvent");
+        goto fail;
+    }
+    s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
+    if (!s->hrecv) {
+        error_setg(errp, "Failed CreateEvent");
+        goto fail;
+    }
+
+    s->hcom = CreateFile(filename, GENERIC_READ | GENERIC_WRITE, 0, NULL,
+                      OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
+    if (s->hcom == INVALID_HANDLE_VALUE) {
+        error_setg(errp, "Failed CreateFile (%lu)", GetLastError());
+        s->hcom = NULL;
+        goto fail;
+    }
+
+    if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
+        error_setg(errp, "Failed SetupComm");
+        goto fail;
+    }
+
+    ZeroMemory(&comcfg, sizeof(COMMCONFIG));
+    size = sizeof(COMMCONFIG);
+    GetDefaultCommConfig(filename, &comcfg, &size);
+    comcfg.dcb.DCBlength = sizeof(DCB);
+    CommConfigDialog(filename, NULL, &comcfg);
+
+    if (!SetCommState(s->hcom, &comcfg.dcb)) {
+        error_setg(errp, "Failed SetCommState");
+        goto fail;
+    }
+
+    if (!SetCommMask(s->hcom, EV_ERR)) {
+        error_setg(errp, "Failed SetCommMask");
+        goto fail;
+    }
+
+    cto.ReadIntervalTimeout = MAXDWORD;
+    if (!SetCommTimeouts(s->hcom, &cto)) {
+        error_setg(errp, "Failed SetCommTimeouts");
+        goto fail;
+    }
+
+    if (!ClearCommError(s->hcom, &err, &comstat)) {
+        error_setg(errp, "Failed ClearCommError");
+        goto fail;
+    }
+    qemu_add_polling_cb(win_chr_poll, chr);
+    return 0;
+
+ fail:
+    return -1;
+}
+
+int win_chr_pipe_poll(void *opaque)
+{
+    Chardev *chr = CHARDEV(opaque);
+    WinChardev *s = WIN_CHARDEV(opaque);
+    DWORD size;
+
+    PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
+    if (size > 0) {
+        s->len = size;
+        win_chr_read_poll(chr);
+        win_chr_read(chr);
+        return 1;
+    }
+    return 0;
+}
+
+/* Called with chr_write_lock held.  */
+static int win_chr_write(Chardev *chr, const uint8_t *buf, int len1)
+{
+    WinChardev *s = WIN_CHARDEV(chr);
+    DWORD len, ret, size, err;
+
+    len = len1;
+    ZeroMemory(&s->osend, sizeof(s->osend));
+    s->osend.hEvent = s->hsend;
+    while (len > 0) {
+        if (s->hsend) {
+            ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
+        } else {
+            ret = WriteFile(s->hcom, buf, len, &size, NULL);
+        }
+        if (!ret) {
+            err = GetLastError();
+            if (err == ERROR_IO_PENDING) {
+                ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
+                if (ret) {
+                    buf += size;
+                    len -= size;
+                } else {
+                    break;
+                }
+            } else {
+                break;
+            }
+        } else {
+            buf += size;
+            len -= size;
+        }
+    }
+    return len1 - len;
+}
+
+static void char_win_finalize(Object *obj)
+{
+    Chardev *chr = CHARDEV(obj);
+    WinChardev *s = WIN_CHARDEV(chr);
+
+    if (s->skip_free) {
+        return;
+    }
+
+    if (s->hsend) {
+        CloseHandle(s->hsend);
+    }
+    if (s->hrecv) {
+        CloseHandle(s->hrecv);
+    }
+    if (s->hcom) {
+        CloseHandle(s->hcom);
+    }
+    if (s->fpipe) {
+        qemu_del_polling_cb(win_chr_pipe_poll, chr);
+    } else {
+        qemu_del_polling_cb(win_chr_poll, chr);
+    }
+
+    qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
+}
+
+void qemu_chr_open_win_file(Chardev *chr, HANDLE fd_out)
+{
+    WinChardev *s = WIN_CHARDEV(chr);
+
+    s->skip_free = true;
+    s->hcom = fd_out;
+}
+
+static void char_win_class_init(ObjectClass *oc, void *data)
+{
+    ChardevClass *cc = CHARDEV_CLASS(oc);
+
+    cc->chr_write = win_chr_write;
+}
+
+static const TypeInfo char_win_type_info = {
+    .name = TYPE_CHARDEV_WIN,
+    .parent = TYPE_CHARDEV,
+    .instance_size = sizeof(WinChardev),
+    .instance_finalize = char_win_finalize,
+    .class_init = char_win_class_init,
+    .abstract = true,
+};
+
+static void register_types(void)
+{
+    type_register_static(&char_win_type_info);
+}
+
+type_init(register_types);
diff --git a/chardev/char.c b/chardev/char.c
index 5391667f09..9d796f8e26 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -88,6 +88,9 @@
 #include "char-mux.h"
 #include "char-fd.h"
 #include "char-io.h"
+#ifdef _WIN32
+#include "char-win.h"
+#endif
 
 #define TCP_MAX_FDS 16
 
@@ -1471,23 +1474,6 @@ static void qemu_chr_open_pp_fd(Chardev *chr,
 
 #define HAVE_CHARDEV_SERIAL 1
 
-typedef struct {
-    Chardev parent;
-    int max_size;
-    HANDLE hcom, hrecv, hsend;
-    OVERLAPPED orecv;
-    BOOL fpipe;
-    DWORD len;
-
-    /* Protected by the Chardev chr_write_lock.  */
-    OVERLAPPED osend;
-    /* FIXME: file/console do not finalize */
-    BOOL skip_free;
-} WinChardev;
-
-#define TYPE_CHARDEV_WIN "chardev-win"
-#define WIN_CHARDEV(obj) OBJECT_CHECK(WinChardev, (obj), TYPE_CHARDEV_WIN)
-
 typedef struct {
     Chardev parent;
     HANDLE  hStdIn;
@@ -1501,217 +1487,9 @@ typedef struct {
 #define WIN_STDIO_CHARDEV(obj)                                  \
     OBJECT_CHECK(WinStdioChardev, (obj), TYPE_CHARDEV_WIN_STDIO)
 
-#define NSENDBUF 2048
-#define NRECVBUF 2048
 #define MAXCONNECT 1
 #define NTIMEOUT 5000
 
-static int win_chr_poll(void *opaque);
-static int win_chr_pipe_poll(void *opaque);
-
-static void char_win_finalize(Object *obj)
-{
-    Chardev *chr = CHARDEV(obj);
-    WinChardev *s = WIN_CHARDEV(chr);
-
-    if (s->skip_free) {
-        return;
-    }
-
-    if (s->hsend) {
-        CloseHandle(s->hsend);
-    }
-    if (s->hrecv) {
-        CloseHandle(s->hrecv);
-    }
-    if (s->hcom) {
-        CloseHandle(s->hcom);
-    }
-    if (s->fpipe)
-        qemu_del_polling_cb(win_chr_pipe_poll, chr);
-    else
-        qemu_del_polling_cb(win_chr_poll, chr);
-
-    qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
-}
-
-static int win_chr_init(Chardev *chr, const char *filename, Error **errp)
-{
-    WinChardev *s = WIN_CHARDEV(chr);
-    COMMCONFIG comcfg;
-    COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
-    COMSTAT comstat;
-    DWORD size;
-    DWORD err;
-
-    s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
-    if (!s->hsend) {
-        error_setg(errp, "Failed CreateEvent");
-        goto fail;
-    }
-    s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
-    if (!s->hrecv) {
-        error_setg(errp, "Failed CreateEvent");
-        goto fail;
-    }
-
-    s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
-                      OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
-    if (s->hcom == INVALID_HANDLE_VALUE) {
-        error_setg(errp, "Failed CreateFile (%lu)", GetLastError());
-        s->hcom = NULL;
-        goto fail;
-    }
-
-    if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
-        error_setg(errp, "Failed SetupComm");
-        goto fail;
-    }
-
-    ZeroMemory(&comcfg, sizeof(COMMCONFIG));
-    size = sizeof(COMMCONFIG);
-    GetDefaultCommConfig(filename, &comcfg, &size);
-    comcfg.dcb.DCBlength = sizeof(DCB);
-    CommConfigDialog(filename, NULL, &comcfg);
-
-    if (!SetCommState(s->hcom, &comcfg.dcb)) {
-        error_setg(errp, "Failed SetCommState");
-        goto fail;
-    }
-
-    if (!SetCommMask(s->hcom, EV_ERR)) {
-        error_setg(errp, "Failed SetCommMask");
-        goto fail;
-    }
-
-    cto.ReadIntervalTimeout = MAXDWORD;
-    if (!SetCommTimeouts(s->hcom, &cto)) {
-        error_setg(errp, "Failed SetCommTimeouts");
-        goto fail;
-    }
-
-    if (!ClearCommError(s->hcom, &err, &comstat)) {
-        error_setg(errp, "Failed ClearCommError");
-        goto fail;
-    }
-    qemu_add_polling_cb(win_chr_poll, chr);
-    return 0;
-
- fail:
-    return -1;
-}
-
-/* Called with chr_write_lock held.  */
-static int win_chr_write(Chardev *chr, const uint8_t *buf, int len1)
-{
-    WinChardev *s = WIN_CHARDEV(chr);
-    DWORD len, ret, size, err;
-
-    len = len1;
-    ZeroMemory(&s->osend, sizeof(s->osend));
-    s->osend.hEvent = s->hsend;
-    while (len > 0) {
-        if (s->hsend)
-            ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
-        else
-            ret = WriteFile(s->hcom, buf, len, &size, NULL);
-        if (!ret) {
-            err = GetLastError();
-            if (err == ERROR_IO_PENDING) {
-                ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
-                if (ret) {
-                    buf += size;
-                    len -= size;
-                } else {
-                    break;
-                }
-            } else {
-                break;
-            }
-        } else {
-            buf += size;
-            len -= size;
-        }
-    }
-    return len1 - len;
-}
-
-static int win_chr_read_poll(Chardev *chr)
-{
-    WinChardev *s = WIN_CHARDEV(chr);
-
-    s->max_size = qemu_chr_be_can_write(chr);
-    return s->max_size;
-}
-
-static void win_chr_readfile(Chardev *chr)
-{
-    WinChardev *s = WIN_CHARDEV(chr);
-
-    int ret, err;
-    uint8_t buf[CHR_READ_BUF_LEN];
-    DWORD size;
-
-    ZeroMemory(&s->orecv, sizeof(s->orecv));
-    s->orecv.hEvent = s->hrecv;
-    ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
-    if (!ret) {
-        err = GetLastError();
-        if (err == ERROR_IO_PENDING) {
-            ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
-        }
-    }
-
-    if (size > 0) {
-        qemu_chr_be_write(chr, buf, size);
-    }
-}
-
-static void win_chr_read(Chardev *chr)
-{
-    WinChardev *s = WIN_CHARDEV(chr);
-
-    if (s->len > s->max_size)
-        s->len = s->max_size;
-    if (s->len == 0)
-        return;
-
-    win_chr_readfile(chr);
-}
-
-static int win_chr_poll(void *opaque)
-{
-    Chardev *chr = CHARDEV(opaque);
-    WinChardev *s = WIN_CHARDEV(opaque);
-    COMSTAT status;
-    DWORD comerr;
-
-    ClearCommError(s->hcom, &comerr, &status);
-    if (status.cbInQue > 0) {
-        s->len = status.cbInQue;
-        win_chr_read_poll(chr);
-        win_chr_read(chr);
-        return 1;
-    }
-    return 0;
-}
-
-static int win_chr_pipe_poll(void *opaque)
-{
-    Chardev *chr = CHARDEV(opaque);
-    WinChardev *s = WIN_CHARDEV(opaque);
-    DWORD size;
-
-    PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
-    if (size > 0) {
-        s->len = size;
-        win_chr_read_poll(chr);
-        win_chr_read(chr);
-        return 1;
-    }
-    return 0;
-}
-
 static int win_chr_pipe_init(Chardev *chr, const char *filename,
                              Error **errp)
 {
@@ -1789,30 +1567,6 @@ static void qemu_chr_open_pipe(Chardev *chr,
     }
 }
 
-static void qemu_chr_open_win_file(Chardev *chr, HANDLE fd_out)
-{
-    WinChardev *s = WIN_CHARDEV(chr);
-
-    s->skip_free = true;
-    s->hcom = fd_out;
-}
-
-static void char_win_class_init(ObjectClass *oc, void *data)
-{
-    ChardevClass *cc = CHARDEV_CLASS(oc);
-
-    cc->chr_write = win_chr_write;
-}
-
-static const TypeInfo char_win_type_info = {
-    .name = TYPE_CHARDEV_WIN,
-    .parent = TYPE_CHARDEV,
-    .instance_size = sizeof(WinChardev),
-    .instance_finalize = char_win_finalize,
-    .class_init = char_win_class_init,
-    .abstract = true,
-};
-
 static void qemu_chr_open_win_con(Chardev *chr,
                                   ChardevBackend *backend,
                                   bool *be_opened,
@@ -4179,7 +3933,6 @@ static void register_types(void)
 {
     type_register_static(&char_type_info);
 #ifdef _WIN32
-    type_register_static(&char_win_type_info);
     type_register_static(&char_win_stdio_type_info);
 #endif
     type_register_static(&char_socket_type_info);
diff --git a/chardev/Makefile.objs b/chardev/Makefile.objs
index d2f03dc5df..bdf5a112a7 100644
--- a/chardev/Makefile.objs
+++ b/chardev/Makefile.objs
@@ -4,3 +4,4 @@ chardev-obj-y += char-io.o
 chardev-obj-y += char-mux.o
 chardev-obj-y += char-null.o
 chardev-obj-y += char-ringbuf.o
+chardev-obj-$(CONFIG_WIN32) += char-win.o
-- 
2.11.0

[Qemu-devel] [PATCH 30/40] char: move win-stdio into its own file

[Marc-André Lureau]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 chardev/char-win-stdio.h |   6 ++
 chardev/char-win-stdio.c | 243 +++++++++++++++++++++++++++++++++++++++++++++++
 chardev/char.c           | 231 +-------------------------------------------
 chardev/Makefile.objs    |   1 +
 4 files changed, 252 insertions(+), 229 deletions(-)
 create mode 100644 chardev/char-win-stdio.h
 create mode 100644 chardev/char-win-stdio.c

diff --git a/chardev/char-win-stdio.h b/chardev/char-win-stdio.h
new file mode 100644
index 0000000000..50ad99300a
--- /dev/null
+++ b/chardev/char-win-stdio.h
@@ -0,0 +1,6 @@
+#ifndef CHAR_WIN_STDIO_H
+#define CHAR_WIN_STDIO_H
+
+#define TYPE_CHARDEV_WIN_STDIO "chardev-win-stdio"
+
+#endif /* CHAR_WIN_STDIO_H */
diff --git a/chardev/char-win-stdio.c b/chardev/char-win-stdio.c
new file mode 100644
index 0000000000..78d1f7cf29
--- /dev/null
+++ b/chardev/char-win-stdio.c
@@ -0,0 +1,243 @@
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "char-win.h"
+#include "char-win-stdio.h"
+
+typedef struct {
+    Chardev parent;
+    HANDLE  hStdIn;
+    HANDLE  hInputReadyEvent;
+    HANDLE  hInputDoneEvent;
+    HANDLE  hInputThread;
+    uint8_t win_stdio_buf;
+} WinStdioChardev;
+
+#define WIN_STDIO_CHARDEV(obj)                                          \
+    OBJECT_CHECK(WinStdioChardev, (obj), TYPE_CHARDEV_WIN_STDIO)
+
+static void win_stdio_wait_func(void *opaque)
+{
+    Chardev *chr = CHARDEV(opaque);
+    WinStdioChardev *stdio = WIN_STDIO_CHARDEV(opaque);
+    INPUT_RECORD       buf[4];
+    int                ret;
+    DWORD              dwSize;
+    int                i;
+
+    ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
+
+    if (!ret) {
+        /* Avoid error storm */
+        qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
+        return;
+    }
+
+    for (i = 0; i < dwSize; i++) {
+        KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
+
+        if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
+            int j;
+            if (kev->uChar.AsciiChar != 0) {
+                for (j = 0; j < kev->wRepeatCount; j++) {
+                    if (qemu_chr_be_can_write(chr)) {
+                        uint8_t c = kev->uChar.AsciiChar;
+                        qemu_chr_be_write(chr, &c, 1);
+                    }
+                }
+            }
+        }
+    }
+}
+
+static DWORD WINAPI win_stdio_thread(LPVOID param)
+{
+    WinStdioChardev *stdio = WIN_STDIO_CHARDEV(param);
+    int                ret;
+    DWORD              dwSize;
+
+    while (1) {
+
+        /* Wait for one byte */
+        ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
+
+        /* Exit in case of error, continue if nothing read */
+        if (!ret) {
+            break;
+        }
+        if (!dwSize) {
+            continue;
+        }
+
+        /* Some terminal emulator returns \r\n for Enter, just pass \n */
+        if (stdio->win_stdio_buf == '\r') {
+            continue;
+        }
+
+        /* Signal the main thread and wait until the byte was eaten */
+        if (!SetEvent(stdio->hInputReadyEvent)) {
+            break;
+        }
+        if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
+            != WAIT_OBJECT_0) {
+            break;
+        }
+    }
+
+    qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
+    return 0;
+}
+
+static void win_stdio_thread_wait_func(void *opaque)
+{
+    Chardev *chr = CHARDEV(opaque);
+    WinStdioChardev *stdio = WIN_STDIO_CHARDEV(opaque);
+
+    if (qemu_chr_be_can_write(chr)) {
+        qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
+    }
+
+    SetEvent(stdio->hInputDoneEvent);
+}
+
+static void qemu_chr_set_echo_win_stdio(Chardev *chr, bool echo)
+{
+    WinStdioChardev *stdio = WIN_STDIO_CHARDEV(chr);
+    DWORD              dwMode = 0;
+
+    GetConsoleMode(stdio->hStdIn, &dwMode);
+
+    if (echo) {
+        SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
+    } else {
+        SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
+    }
+}
+
+static void qemu_chr_open_stdio(Chardev *chr,
+                                ChardevBackend *backend,
+                                bool *be_opened,
+                                Error **errp)
+{
+    WinStdioChardev *stdio = WIN_STDIO_CHARDEV(chr);
+    DWORD              dwMode;
+    int                is_console = 0;
+
+    stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
+    if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
+        error_setg(errp, "cannot open stdio: invalid handle");
+        return;
+    }
+
+    is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
+
+    if (is_console) {
+        if (qemu_add_wait_object(stdio->hStdIn,
+                                 win_stdio_wait_func, chr)) {
+            error_setg(errp, "qemu_add_wait_object: failed");
+            goto err1;
+        }
+    } else {
+        DWORD   dwId;
+
+        stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
+        stdio->hInputDoneEvent  = CreateEvent(NULL, FALSE, FALSE, NULL);
+        if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
+            || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
+            error_setg(errp, "cannot create event");
+            goto err2;
+        }
+        if (qemu_add_wait_object(stdio->hInputReadyEvent,
+                                 win_stdio_thread_wait_func, chr)) {
+            error_setg(errp, "qemu_add_wait_object: failed");
+            goto err2;
+        }
+        stdio->hInputThread     = CreateThread(NULL, 0, win_stdio_thread,
+                                               chr, 0, &dwId);
+
+        if (stdio->hInputThread == INVALID_HANDLE_VALUE) {
+            error_setg(errp, "cannot create stdio thread");
+            goto err3;
+        }
+    }
+
+    dwMode |= ENABLE_LINE_INPUT;
+
+    if (is_console) {
+        /* set the terminal in raw mode */
+        /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
+        dwMode |= ENABLE_PROCESSED_INPUT;
+    }
+
+    SetConsoleMode(stdio->hStdIn, dwMode);
+
+    qemu_chr_set_echo_win_stdio(chr, false);
+
+    return;
+
+err3:
+    qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
+err2:
+    CloseHandle(stdio->hInputReadyEvent);
+    CloseHandle(stdio->hInputDoneEvent);
+err1:
+    qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
+}
+
+static void char_win_stdio_finalize(Object *obj)
+{
+    WinStdioChardev *stdio = WIN_STDIO_CHARDEV(obj);
+
+    if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
+        CloseHandle(stdio->hInputReadyEvent);
+    }
+    if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
+        CloseHandle(stdio->hInputDoneEvent);
+    }
+    if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
+        TerminateThread(stdio->hInputThread, 0);
+    }
+}
+
+static int win_stdio_write(Chardev *chr, const uint8_t *buf, int len)
+{
+    HANDLE  hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
+    DWORD   dwSize;
+    int     len1;
+
+    len1 = len;
+
+    while (len1 > 0) {
+        if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
+            break;
+        }
+        buf  += dwSize;
+        len1 -= dwSize;
+    }
+
+    return len - len1;
+}
+
+static void char_win_stdio_class_init(ObjectClass *oc, void *data)
+{
+    ChardevClass *cc = CHARDEV_CLASS(oc);
+
+    cc->open = qemu_chr_open_stdio;
+    cc->chr_write = win_stdio_write;
+    cc->chr_set_echo = qemu_chr_set_echo_win_stdio;
+}
+
+static const TypeInfo char_win_stdio_type_info = {
+    .name = TYPE_CHARDEV_WIN_STDIO,
+    .parent = TYPE_CHARDEV,
+    .instance_size = sizeof(WinStdioChardev),
+    .instance_finalize = char_win_stdio_finalize,
+    .class_init = char_win_stdio_class_init,
+    .abstract = true,
+};
+
+static void register_types(void)
+{
+    type_register_static(&char_win_stdio_type_info);
+}
+
+type_init(register_types);
diff --git a/chardev/char.c b/chardev/char.c
index 9d796f8e26..3c8a6038ff 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -90,6 +90,7 @@
 #include "char-io.h"
 #ifdef _WIN32
 #include "char-win.h"
+#include "char-win-stdio.h"
 #endif
 
 #define TCP_MAX_FDS 16
@@ -1474,19 +1475,6 @@ static void qemu_chr_open_pp_fd(Chardev *chr,
 
 #define HAVE_CHARDEV_SERIAL 1
 
-typedef struct {
-    Chardev parent;
-    HANDLE  hStdIn;
-    HANDLE  hInputReadyEvent;
-    HANDLE  hInputDoneEvent;
-    HANDLE  hInputThread;
-    uint8_t win_stdio_buf;
-} WinStdioChardev;
-
-#define TYPE_CHARDEV_WIN_STDIO "chardev-win-stdio"
-#define WIN_STDIO_CHARDEV(obj)                                  \
-    OBJECT_CHECK(WinStdioChardev, (obj), TYPE_CHARDEV_WIN_STDIO)
-
 #define MAXCONNECT 1
 #define NTIMEOUT 5000
 
@@ -1588,215 +1576,6 @@ static const TypeInfo char_console_type_info = {
     .class_init = char_console_class_init,
 };
 
-static int win_stdio_write(Chardev *chr, const uint8_t *buf, int len)
-{
-    HANDLE  hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
-    DWORD   dwSize;
-    int     len1;
-
-    len1 = len;
-
-    while (len1 > 0) {
-        if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
-            break;
-        }
-        buf  += dwSize;
-        len1 -= dwSize;
-    }
-
-    return len - len1;
-}
-
-static void win_stdio_wait_func(void *opaque)
-{
-    Chardev *chr = CHARDEV(opaque);
-    WinStdioChardev *stdio = WIN_STDIO_CHARDEV(opaque);
-    INPUT_RECORD       buf[4];
-    int                ret;
-    DWORD              dwSize;
-    int                i;
-
-    ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
-
-    if (!ret) {
-        /* Avoid error storm */
-        qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
-        return;
-    }
-
-    for (i = 0; i < dwSize; i++) {
-        KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
-
-        if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
-            int j;
-            if (kev->uChar.AsciiChar != 0) {
-                for (j = 0; j < kev->wRepeatCount; j++) {
-                    if (qemu_chr_be_can_write(chr)) {
-                        uint8_t c = kev->uChar.AsciiChar;
-                        qemu_chr_be_write(chr, &c, 1);
-                    }
-                }
-            }
-        }
-    }
-}
-
-static DWORD WINAPI win_stdio_thread(LPVOID param)
-{
-    WinStdioChardev *stdio = WIN_STDIO_CHARDEV(param);
-    int                ret;
-    DWORD              dwSize;
-
-    while (1) {
-
-        /* Wait for one byte */
-        ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
-
-        /* Exit in case of error, continue if nothing read */
-        if (!ret) {
-            break;
-        }
-        if (!dwSize) {
-            continue;
-        }
-
-        /* Some terminal emulator returns \r\n for Enter, just pass \n */
-        if (stdio->win_stdio_buf == '\r') {
-            continue;
-        }
-
-        /* Signal the main thread and wait until the byte was eaten */
-        if (!SetEvent(stdio->hInputReadyEvent)) {
-            break;
-        }
-        if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
-            != WAIT_OBJECT_0) {
-            break;
-        }
-    }
-
-    qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
-    return 0;
-}
-
-static void win_stdio_thread_wait_func(void *opaque)
-{
-    Chardev *chr = CHARDEV(opaque);
-    WinStdioChardev *stdio = WIN_STDIO_CHARDEV(opaque);
-
-    if (qemu_chr_be_can_write(chr)) {
-        qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
-    }
-
-    SetEvent(stdio->hInputDoneEvent);
-}
-
-static void qemu_chr_set_echo_win_stdio(Chardev *chr, bool echo)
-{
-    WinStdioChardev *stdio = WIN_STDIO_CHARDEV(chr);
-    DWORD              dwMode = 0;
-
-    GetConsoleMode(stdio->hStdIn, &dwMode);
-
-    if (echo) {
-        SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
-    } else {
-        SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
-    }
-}
-
-static void char_win_stdio_finalize(Object *obj)
-{
-    WinStdioChardev *stdio = WIN_STDIO_CHARDEV(obj);
-
-    if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
-        CloseHandle(stdio->hInputReadyEvent);
-    }
-    if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
-        CloseHandle(stdio->hInputDoneEvent);
-    }
-    if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
-        TerminateThread(stdio->hInputThread, 0);
-    }
-}
-
-static const TypeInfo char_win_stdio_type_info = {
-    .name = TYPE_CHARDEV_WIN_STDIO,
-    .parent = TYPE_CHARDEV,
-    .instance_size = sizeof(WinStdioChardev),
-    .instance_finalize = char_win_stdio_finalize,
-    .abstract = true,
-};
-
-static void qemu_chr_open_stdio(Chardev *chr,
-                                ChardevBackend *backend,
-                                bool *be_opened,
-                                Error **errp)
-{
-    WinStdioChardev *stdio = WIN_STDIO_CHARDEV(chr);
-    DWORD              dwMode;
-    int                is_console = 0;
-
-    stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
-    if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
-        error_setg(errp, "cannot open stdio: invalid handle");
-        return;
-    }
-
-    is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
-
-    if (is_console) {
-        if (qemu_add_wait_object(stdio->hStdIn,
-                                 win_stdio_wait_func, chr)) {
-            error_setg(errp, "qemu_add_wait_object: failed");
-            goto err1;
-        }
-    } else {
-        DWORD   dwId;
-            
-        stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
-        stdio->hInputDoneEvent  = CreateEvent(NULL, FALSE, FALSE, NULL);
-        if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
-            || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
-            error_setg(errp, "cannot create event");
-            goto err2;
-        }
-        if (qemu_add_wait_object(stdio->hInputReadyEvent,
-                                 win_stdio_thread_wait_func, chr)) {
-            error_setg(errp, "qemu_add_wait_object: failed");
-            goto err2;
-        }
-        stdio->hInputThread     = CreateThread(NULL, 0, win_stdio_thread,
-                                               chr, 0, &dwId);
-
-        if (stdio->hInputThread == INVALID_HANDLE_VALUE) {
-            error_setg(errp, "cannot create stdio thread");
-            goto err3;
-        }
-    }
-
-    dwMode |= ENABLE_LINE_INPUT;
-
-    if (is_console) {
-        /* set the terminal in raw mode */
-        /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
-        dwMode |= ENABLE_PROCESSED_INPUT;
-    }
-
-    SetConsoleMode(stdio->hStdIn, dwMode);
-
-    qemu_chr_set_echo_win_stdio(chr, false);
-
-    return;
-
-err3:
-    qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
-err2:
-    CloseHandle(stdio->hInputReadyEvent);
-    CloseHandle(stdio->hInputDoneEvent);
-err1:
-    qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
-}
 #endif /* !_WIN32 */
 
 /***********************************************************/
@@ -2784,11 +2563,8 @@ static void char_stdio_class_init(ObjectClass *oc, void *data)
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
     cc->parse = qemu_chr_parse_stdio;
+#ifndef _WIN32
     cc->open = qemu_chr_open_stdio;
-#ifdef _WIN32
-    cc->chr_write = win_stdio_write;
-    cc->chr_set_echo = qemu_chr_set_echo_win_stdio;
-#else
     cc->chr_set_echo = qemu_chr_set_echo_stdio;
 #endif
 }
@@ -3932,9 +3708,6 @@ void qemu_chr_cleanup(void)
 static void register_types(void)
 {
     type_register_static(&char_type_info);
-#ifdef _WIN32
-    type_register_static(&char_win_stdio_type_info);
-#endif
     type_register_static(&char_socket_type_info);
     type_register_static(&char_udp_type_info);
     type_register_static(&char_file_type_info);
diff --git a/chardev/Makefile.objs b/chardev/Makefile.objs
index bdf5a112a7..3c4a328de8 100644
--- a/chardev/Makefile.objs
+++ b/chardev/Makefile.objs
@@ -5,3 +5,4 @@ chardev-obj-y += char-mux.o
 chardev-obj-y += char-null.o
 chardev-obj-y += char-ringbuf.o
 chardev-obj-$(CONFIG_WIN32) += char-win.o
+chardev-obj-$(CONFIG_WIN32) += char-win-stdio.o
-- 
2.11.0

[Qemu-devel] [PATCH 31/40] char: move socket chardev to its own file

[Marc-André Lureau]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 include/sysemu/char.h |   1 +
 chardev/char-socket.c | 993 ++++++++++++++++++++++++++++++++++++++++++++++++++
 chardev/char.c        | 978 +------------------------------------------------
 chardev/Makefile.objs |   1 +
 4 files changed, 996 insertions(+), 977 deletions(-)
 create mode 100644 chardev/char-socket.c

diff --git a/include/sysemu/char.h b/include/sysemu/char.h
index 1a65798e3e..b256e79c31 100644
--- a/include/sysemu/char.h
+++ b/include/sysemu/char.h
@@ -443,6 +443,7 @@ void qemu_chr_set_feature(Chardev *chr,
                           ChardevFeature feature);
 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename);
 int qemu_chr_write_all(Chardev *s, const uint8_t *buf, int len);
+int qemu_chr_wait_connected(Chardev *chr, Error **errp);
 
 #define TYPE_CHARDEV "chardev"
 #define CHARDEV(obj) OBJECT_CHECK(Chardev, (obj), TYPE_CHARDEV)
diff --git a/chardev/char-socket.c b/chardev/char-socket.c
new file mode 100644
index 0000000000..9fe1f9b7f6
--- /dev/null
+++ b/chardev/char-socket.c
@@ -0,0 +1,993 @@
+#include "qemu/osdep.h"
+#include "sysemu/char.h"
+#include "io/channel-socket.h"
+#include "io/channel-tls.h"
+#include "qemu/error-report.h"
+#include "qapi/error.h"
+#include "qapi/clone-visitor.h"
+
+#include "char-io.h"
+
+/***********************************************************/
+/* TCP Net console */
+
+#define TCP_MAX_FDS 16
+
+typedef struct {
+    Chardev parent;
+    QIOChannel *ioc; /* Client I/O channel */
+    QIOChannelSocket *sioc; /* Client master channel */
+    QIOChannelSocket *listen_ioc;
+    guint listen_tag;
+    QCryptoTLSCreds *tls_creds;
+    int connected;
+    int max_size;
+    int do_telnetopt;
+    int do_nodelay;
+    int is_unix;
+    int *read_msgfds;
+    size_t read_msgfds_num;
+    int *write_msgfds;
+    size_t write_msgfds_num;
+
+    SocketAddress *addr;
+    bool is_listen;
+    bool is_telnet;
+
+    guint reconnect_timer;
+    int64_t reconnect_time;
+    bool connect_err_reported;
+} SocketChardev;
+
+#define SOCKET_CHARDEV(obj)                                     \
+    OBJECT_CHECK(SocketChardev, (obj), TYPE_CHARDEV_SOCKET)
+
+static gboolean socket_reconnect_timeout(gpointer opaque);
+
+static void qemu_chr_socket_restart_timer(Chardev *chr)
+{
+    SocketChardev *s = SOCKET_CHARDEV(chr);
+    char *name;
+
+    assert(s->connected == 0);
+    s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time,
+                                               socket_reconnect_timeout, chr);
+    name = g_strdup_printf("chardev-socket-reconnect-%s", chr->label);
+    g_source_set_name_by_id(s->reconnect_timer, name);
+    g_free(name);
+}
+
+static void check_report_connect_error(Chardev *chr,
+                                       Error *err)
+{
+    SocketChardev *s = SOCKET_CHARDEV(chr);
+
+    if (!s->connect_err_reported) {
+        error_report("Unable to connect character device %s: %s",
+                     chr->label, error_get_pretty(err));
+        s->connect_err_reported = true;
+    }
+    qemu_chr_socket_restart_timer(chr);
+}
+
+static gboolean tcp_chr_accept(QIOChannel *chan,
+                               GIOCondition cond,
+                               void *opaque);
+
+/* Called with chr_write_lock held.  */
+static int tcp_chr_write(Chardev *chr, const uint8_t *buf, int len)
+{
+    SocketChardev *s = SOCKET_CHARDEV(chr);
+
+    if (s->connected) {
+        int ret =  io_channel_send_full(s->ioc, buf, len,
+                                        s->write_msgfds,
+                                        s->write_msgfds_num);
+
+        /* free the written msgfds, no matter what */
+        if (s->write_msgfds_num) {
+            g_free(s->write_msgfds);
+            s->write_msgfds = 0;
+            s->write_msgfds_num = 0;
+        }
+
+        return ret;
+    } else {
+        /* XXX: indicate an error ? */
+        return len;
+    }
+}
+
+static int tcp_chr_read_poll(void *opaque)
+{
+    Chardev *chr = CHARDEV(opaque);
+    SocketChardev *s = SOCKET_CHARDEV(opaque);
+    if (!s->connected) {
+        return 0;
+    }
+    s->max_size = qemu_chr_be_can_write(chr);
+    return s->max_size;
+}
+
+#define IAC 255
+#define IAC_BREAK 243
+static void tcp_chr_process_IAC_bytes(Chardev *chr,
+                                      SocketChardev *s,
+                                      uint8_t *buf, int *size)
+{
+    /* Handle any telnet client's basic IAC options to satisfy char by
+     * char mode with no echo.  All IAC options will be removed from
+     * the buf and the do_telnetopt variable will be used to track the
+     * state of the width of the IAC information.
+     *
+     * IAC commands come in sets of 3 bytes with the exception of the
+     * "IAC BREAK" command and the double IAC.
+     */
+
+    int i;
+    int j = 0;
+
+    for (i = 0; i < *size; i++) {
+        if (s->do_telnetopt > 1) {
+            if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
+                /* Double IAC means send an IAC */
+                if (j != i) {
+                    buf[j] = buf[i];
+                }
+                j++;
+                s->do_telnetopt = 1;
+            } else {
+                if ((unsigned char)buf[i] == IAC_BREAK
+                    && s->do_telnetopt == 2) {
+                    /* Handle IAC break commands by sending a serial break */
+                    qemu_chr_be_event(chr, CHR_EVENT_BREAK);
+                    s->do_telnetopt++;
+                }
+                s->do_telnetopt++;
+            }
+            if (s->do_telnetopt >= 4) {
+                s->do_telnetopt = 1;
+            }
+        } else {
+            if ((unsigned char)buf[i] == IAC) {
+                s->do_telnetopt = 2;
+            } else {
+                if (j != i) {
+                    buf[j] = buf[i];
+                }
+                j++;
+            }
+        }
+    }
+    *size = j;
+}
+
+static int tcp_get_msgfds(Chardev *chr, int *fds, int num)
+{
+    SocketChardev *s = SOCKET_CHARDEV(chr);
+
+    int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num;
+
+    assert(num <= TCP_MAX_FDS);
+
+    if (to_copy) {
+        int i;
+
+        memcpy(fds, s->read_msgfds, to_copy * sizeof(int));
+
+        /* Close unused fds */
+        for (i = to_copy; i < s->read_msgfds_num; i++) {
+            close(s->read_msgfds[i]);
+        }
+
+        g_free(s->read_msgfds);
+        s->read_msgfds = 0;
+        s->read_msgfds_num = 0;
+    }
+
+    return to_copy;
+}
+
+static int tcp_set_msgfds(Chardev *chr, int *fds, int num)
+{
+    SocketChardev *s = SOCKET_CHARDEV(chr);
+
+    /* clear old pending fd array */
+    g_free(s->write_msgfds);
+    s->write_msgfds = NULL;
+    s->write_msgfds_num = 0;
+
+    if (!s->connected ||
+        !qio_channel_has_feature(s->ioc,
+                                 QIO_CHANNEL_FEATURE_FD_PASS)) {
+        return -1;
+    }
+
+    if (num) {
+        s->write_msgfds = g_new(int, num);
+        memcpy(s->write_msgfds, fds, num * sizeof(int));
+    }
+
+    s->write_msgfds_num = num;
+
+    return 0;
+}
+
+static ssize_t tcp_chr_recv(Chardev *chr, char *buf, size_t len)
+{
+    SocketChardev *s = SOCKET_CHARDEV(chr);
+    struct iovec iov = { .iov_base = buf, .iov_len = len };
+    int ret;
+    size_t i;
+    int *msgfds = NULL;
+    size_t msgfds_num = 0;
+
+    if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) {
+        ret = qio_channel_readv_full(s->ioc, &iov, 1,
+                                     &msgfds, &msgfds_num,
+                                     NULL);
+    } else {
+        ret = qio_channel_readv_full(s->ioc, &iov, 1,
+                                     NULL, NULL,
+                                     NULL);
+    }
+
+    if (ret == QIO_CHANNEL_ERR_BLOCK) {
+        errno = EAGAIN;
+        ret = -1;
+    } else if (ret == -1) {
+        errno = EIO;
+    }
+
+    if (msgfds_num) {
+        /* close and clean read_msgfds */
+        for (i = 0; i < s->read_msgfds_num; i++) {
+            close(s->read_msgfds[i]);
+        }
+
+        if (s->read_msgfds_num) {
+            g_free(s->read_msgfds);
+        }
+
+        s->read_msgfds = msgfds;
+        s->read_msgfds_num = msgfds_num;
+    }
+
+    for (i = 0; i < s->read_msgfds_num; i++) {
+        int fd = s->read_msgfds[i];
+        if (fd < 0) {
+            continue;
+        }
+
+        /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
+        qemu_set_block(fd);
+
+#ifndef MSG_CMSG_CLOEXEC
+        qemu_set_cloexec(fd);
+#endif
+    }
+
+    return ret;
+}
+
+static GSource *tcp_chr_add_watch(Chardev *chr, GIOCondition cond)
+{
+    SocketChardev *s = SOCKET_CHARDEV(chr);
+    return qio_channel_create_watch(s->ioc, cond);
+}
+
+static void tcp_chr_free_connection(Chardev *chr)
+{
+    SocketChardev *s = SOCKET_CHARDEV(chr);
+    int i;
+
+    if (!s->connected) {
+        return;
+    }
+
+    if (s->read_msgfds_num) {
+        for (i = 0; i < s->read_msgfds_num; i++) {
+            close(s->read_msgfds[i]);
+        }
+        g_free(s->read_msgfds);
+        s->read_msgfds = NULL;
+        s->read_msgfds_num = 0;
+    }
+
+    tcp_set_msgfds(chr, NULL, 0);
+    remove_fd_in_watch(chr);
+    object_unref(OBJECT(s->sioc));
+    s->sioc = NULL;
+    object_unref(OBJECT(s->ioc));
+    s->ioc = NULL;
+    g_free(chr->filename);
+    chr->filename = NULL;
+    s->connected = 0;
+}
+
+static char *SocketAddress_to_str(const char *prefix, SocketAddress *addr,
+                                  bool is_listen, bool is_telnet)
+{
+    switch (addr->type) {
+    case SOCKET_ADDRESS_KIND_INET:
+        return g_strdup_printf("%s%s:%s:%s%s", prefix,
+                               is_telnet ? "telnet" : "tcp",
+                               addr->u.inet.data->host,
+                               addr->u.inet.data->port,
+                               is_listen ? ",server" : "");
+        break;
+    case SOCKET_ADDRESS_KIND_UNIX:
+        return g_strdup_printf("%sunix:%s%s", prefix,
+                               addr->u.q_unix.data->path,
+                               is_listen ? ",server" : "");
+        break;
+    case SOCKET_ADDRESS_KIND_FD:
+        return g_strdup_printf("%sfd:%s%s", prefix, addr->u.fd.data->str,
+                               is_listen ? ",server" : "");
+        break;
+    default:
+        abort();
+    }
+}
+
+static void tcp_chr_disconnect(Chardev *chr)
+{
+    SocketChardev *s = SOCKET_CHARDEV(chr);
+
+    if (!s->connected) {
+        return;
+    }
+
+    tcp_chr_free_connection(chr);
+
+    if (s->listen_ioc) {
+        s->listen_tag = qio_channel_add_watch(
+            QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
+    }
+    chr->filename = SocketAddress_to_str("disconnected:", s->addr,
+                                         s->is_listen, s->is_telnet);
+    qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
+    if (s->reconnect_time) {
+        qemu_chr_socket_restart_timer(chr);
+    }
+}
+
+static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
+{
+    Chardev *chr = CHARDEV(opaque);
+    SocketChardev *s = SOCKET_CHARDEV(opaque);
+    uint8_t buf[CHR_READ_BUF_LEN];
+    int len, size;
+
+    if (!s->connected || s->max_size <= 0) {
+        return TRUE;
+    }
+    len = sizeof(buf);
+    if (len > s->max_size) {
+        len = s->max_size;
+    }
+    size = tcp_chr_recv(chr, (void *)buf, len);
+    if (size == 0 || size == -1) {
+        /* connection closed */
+        tcp_chr_disconnect(chr);
+    } else if (size > 0) {
+        if (s->do_telnetopt) {
+            tcp_chr_process_IAC_bytes(chr, s, buf, &size);
+        }
+        if (size > 0) {
+            qemu_chr_be_write(chr, buf, size);
+        }
+    }
+
+    return TRUE;
+}
+
+static int tcp_chr_sync_read(Chardev *chr, const uint8_t *buf, int len)
+{
+    SocketChardev *s = SOCKET_CHARDEV(chr);
+    int size;
+
+    if (!s->connected) {
+        return 0;
+    }
+
+    size = tcp_chr_recv(chr, (void *) buf, len);
+    if (size == 0) {
+        /* connection closed */
+        tcp_chr_disconnect(chr);
+    }
+
+    return size;
+}
+
+static char *sockaddr_to_str(struct sockaddr_storage *ss, socklen_t ss_len,
+                             struct sockaddr_storage *ps, socklen_t ps_len,
+                             bool is_listen, bool is_telnet)
+{
+    char shost[NI_MAXHOST], sserv[NI_MAXSERV];
+    char phost[NI_MAXHOST], pserv[NI_MAXSERV];
+    const char *left = "", *right = "";
+
+    switch (ss->ss_family) {
+#ifndef _WIN32
+    case AF_UNIX:
+        return g_strdup_printf("unix:%s%s",
+                               ((struct sockaddr_un *)(ss))->sun_path,
+                               is_listen ? ",server" : "");
+#endif
+    case AF_INET6:
+        left  = "[";
+        right = "]";
+        /* fall through */
+    case AF_INET:
+        getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost),
+                    sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV);
+        getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost),
+                    pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV);
+        return g_strdup_printf("%s:%s%s%s:%s%s <-> %s%s%s:%s",
+                               is_telnet ? "telnet" : "tcp",
+                               left, shost, right, sserv,
+                               is_listen ? ",server" : "",
+                               left, phost, right, pserv);
+
+    default:
+        return g_strdup_printf("unknown");
+    }
+}
+
+static void tcp_chr_connect(void *opaque)
+{
+    Chardev *chr = CHARDEV(opaque);
+    SocketChardev *s = SOCKET_CHARDEV(opaque);
+
+    g_free(chr->filename);
+    chr->filename = sockaddr_to_str(
+        &s->sioc->localAddr, s->sioc->localAddrLen,
+        &s->sioc->remoteAddr, s->sioc->remoteAddrLen,
+        s->is_listen, s->is_telnet);
+
+    s->connected = 1;
+    if (s->ioc) {
+        chr->fd_in_tag = io_add_watch_poll(chr, s->ioc,
+                                           tcp_chr_read_poll,
+                                           tcp_chr_read,
+                                           chr, NULL);
+    }
+    qemu_chr_be_generic_open(chr);
+}
+
+static void tcp_chr_update_read_handler(Chardev *chr,
+                                        GMainContext *context)
+{
+    SocketChardev *s = SOCKET_CHARDEV(chr);
+
+    if (!s->connected) {
+        return;
+    }
+
+    remove_fd_in_watch(chr);
+    if (s->ioc) {
+        chr->fd_in_tag = io_add_watch_poll(chr, s->ioc,
+                                           tcp_chr_read_poll,
+                                           tcp_chr_read, chr,
+                                           context);
+    }
+}
+
+typedef struct {
+    Chardev *chr;
+    char buf[12];
+    size_t buflen;
+} TCPChardevTelnetInit;
+
+static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc,
+                                       GIOCondition cond G_GNUC_UNUSED,
+                                       gpointer user_data)
+{
+    TCPChardevTelnetInit *init = user_data;
+    ssize_t ret;
+
+    ret = qio_channel_write(ioc, init->buf, init->buflen, NULL);
+    if (ret < 0) {
+        if (ret == QIO_CHANNEL_ERR_BLOCK) {
+            ret = 0;
+        } else {
+            tcp_chr_disconnect(init->chr);
+            return FALSE;
+        }
+    }
+    init->buflen -= ret;
+
+    if (init->buflen == 0) {
+        tcp_chr_connect(init->chr);
+        return FALSE;
+    }
+
+    memmove(init->buf, init->buf + ret, init->buflen);
+
+    return TRUE;
+}
+
+static void tcp_chr_telnet_init(Chardev *chr)
+{
+    SocketChardev *s = SOCKET_CHARDEV(chr);
+    TCPChardevTelnetInit *init =
+        g_new0(TCPChardevTelnetInit, 1);
+    size_t n = 0;
+
+    init->chr = chr;
+    init->buflen = 12;
+
+#define IACSET(x, a, b, c)                      \
+    do {                                        \
+        x[n++] = a;                             \
+        x[n++] = b;                             \
+        x[n++] = c;                             \
+    } while (0)
+
+    /* Prep the telnet negotion to put telnet in binary,
+     * no echo, single char mode */
+    IACSET(init->buf, 0xff, 0xfb, 0x01);  /* IAC WILL ECHO */
+    IACSET(init->buf, 0xff, 0xfb, 0x03);  /* IAC WILL Suppress go ahead */
+    IACSET(init->buf, 0xff, 0xfb, 0x00);  /* IAC WILL Binary */
+    IACSET(init->buf, 0xff, 0xfd, 0x00);  /* IAC DO Binary */
+
+#undef IACSET
+
+    qio_channel_add_watch(
+        s->ioc, G_IO_OUT,
+        tcp_chr_telnet_init_io,
+        init, NULL);
+}
+
+
+static void tcp_chr_tls_handshake(Object *source,
+                                  Error *err,
+                                  gpointer user_data)
+{
+    Chardev *chr = user_data;
+    SocketChardev *s = user_data;
+
+    if (err) {
+        tcp_chr_disconnect(chr);
+    } else {
+        if (s->do_telnetopt) {
+            tcp_chr_telnet_init(chr);
+        } else {
+            tcp_chr_connect(chr);
+        }
+    }
+}
+
+
+static void tcp_chr_tls_init(Chardev *chr)
+{
+    SocketChardev *s = SOCKET_CHARDEV(chr);
+    QIOChannelTLS *tioc;
+    Error *err = NULL;
+    gchar *name;
+
+    if (s->is_listen) {
+        tioc = qio_channel_tls_new_server(
+            s->ioc, s->tls_creds,
+            NULL, /* XXX Use an ACL */
+            &err);
+    } else {
+        tioc = qio_channel_tls_new_client(
+            s->ioc, s->tls_creds,
+            s->addr->u.inet.data->host,
+            &err);
+    }
+    if (tioc == NULL) {
+        error_free(err);
+        tcp_chr_disconnect(chr);
+        return;
+    }
+    name = g_strdup_printf("chardev-tls-%s-%s",
+                           s->is_listen ? "server" : "client",
+                           chr->label);
+    qio_channel_set_name(QIO_CHANNEL(tioc), name);
+    g_free(name);
+    object_unref(OBJECT(s->ioc));
+    s->ioc = QIO_CHANNEL(tioc);
+
+    qio_channel_tls_handshake(tioc,
+                              tcp_chr_tls_handshake,
+                              chr,
+                              NULL);
+}
+
+
+static void tcp_chr_set_client_ioc_name(Chardev *chr,
+                                        QIOChannelSocket *sioc)
+{
+    SocketChardev *s = SOCKET_CHARDEV(chr);
+    char *name;
+    name = g_strdup_printf("chardev-tcp-%s-%s",
+                           s->is_listen ? "server" : "client",
+                           chr->label);
+    qio_channel_set_name(QIO_CHANNEL(sioc), name);
+    g_free(name);
+
+}
+
+static int tcp_chr_new_client(Chardev *chr, QIOChannelSocket *sioc)
+{
+    SocketChardev *s = SOCKET_CHARDEV(chr);
+
+    if (s->ioc != NULL) {
+        return -1;
+    }
+
+    s->ioc = QIO_CHANNEL(sioc);
+    object_ref(OBJECT(sioc));
+    s->sioc = sioc;
+    object_ref(OBJECT(sioc));
+
+    qio_channel_set_blocking(s->ioc, false, NULL);
+
+    if (s->do_nodelay) {
+        qio_channel_set_delay(s->ioc, false);
+    }
+    if (s->listen_tag) {
+        g_source_remove(s->listen_tag);
+        s->listen_tag = 0;
+    }
+
+    if (s->tls_creds) {
+        tcp_chr_tls_init(chr);
+    } else {
+        if (s->do_telnetopt) {
+            tcp_chr_telnet_init(chr);
+        } else {
+            tcp_chr_connect(chr);
+        }
+    }
+
+    return 0;
+}
+
+
+static int tcp_chr_add_client(Chardev *chr, int fd)
+{
+    int ret;
+    QIOChannelSocket *sioc;
+
+    sioc = qio_channel_socket_new_fd(fd, NULL);
+    if (!sioc) {
+        return -1;
+    }
+    tcp_chr_set_client_ioc_name(chr, sioc);
+    ret = tcp_chr_new_client(chr, sioc);
+    object_unref(OBJECT(sioc));
+    return ret;
+}
+
+static gboolean tcp_chr_accept(QIOChannel *channel,
+                               GIOCondition cond,
+                               void *opaque)
+{
+    Chardev *chr = CHARDEV(opaque);
+    QIOChannelSocket *sioc;
+
+    sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(channel),
+                                     NULL);
+    if (!sioc) {
+        return TRUE;
+    }
+
+    tcp_chr_new_client(chr, sioc);
+
+    object_unref(OBJECT(sioc));
+
+    return TRUE;
+}
+
+static int tcp_chr_wait_connected(Chardev *chr, Error **errp)
+{
+    SocketChardev *s = SOCKET_CHARDEV(chr);
+    QIOChannelSocket *sioc;
+
+    /* It can't wait on s->connected, since it is set asynchronously
+     * in TLS and telnet cases, only wait for an accepted socket */
+    while (!s->ioc) {
+        if (s->is_listen) {
+            error_report("QEMU waiting for connection on: %s",
+                         chr->filename);
+            qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), true, NULL);
+            tcp_chr_accept(QIO_CHANNEL(s->listen_ioc), G_IO_IN, chr);
+            qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL);
+        } else {
+            sioc = qio_channel_socket_new();
+            tcp_chr_set_client_ioc_name(chr, sioc);
+            if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) {
+                object_unref(OBJECT(sioc));
+                return -1;
+            }
+            tcp_chr_new_client(chr, sioc);
+            object_unref(OBJECT(sioc));
+        }
+    }
+
+    return 0;
+}
+
+static void char_socket_finalize(Object *obj)
+{
+    Chardev *chr = CHARDEV(obj);
+    SocketChardev *s = SOCKET_CHARDEV(obj);
+
+    tcp_chr_free_connection(chr);
+
+    if (s->reconnect_timer) {
+        g_source_remove(s->reconnect_timer);
+        s->reconnect_timer = 0;
+    }
+    qapi_free_SocketAddress(s->addr);
+    if (s->listen_tag) {
+        g_source_remove(s->listen_tag);
+        s->listen_tag = 0;
+    }
+    if (s->listen_ioc) {
+        object_unref(OBJECT(s->listen_ioc));
+    }
+    if (s->tls_creds) {
+        object_unref(OBJECT(s->tls_creds));
+    }
+
+    qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
+}
+
+
+static void qemu_chr_socket_connected(Object *src, Error *err, void *opaque)
+{
+    QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(src);
+    Chardev *chr = CHARDEV(opaque);
+    SocketChardev *s = SOCKET_CHARDEV(chr);
+
+    if (err) {
+        check_report_connect_error(chr, err);
+        object_unref(src);
+        return;
+    }
+
+    s->connect_err_reported = false;
+    tcp_chr_new_client(chr, sioc);
+    object_unref(OBJECT(sioc));
+}
+static gboolean socket_reconnect_timeout(gpointer opaque)
+{
+    Chardev *chr = CHARDEV(opaque);
+    SocketChardev *s = SOCKET_CHARDEV(opaque);
+    QIOChannelSocket *sioc;
+
+    s->reconnect_timer = 0;
+
+    if (chr->be_open) {
+        return false;
+    }
+
+    sioc = qio_channel_socket_new();
+    tcp_chr_set_client_ioc_name(chr, sioc);
+    qio_channel_socket_connect_async(sioc, s->addr,
+                                     qemu_chr_socket_connected,
+                                     chr, NULL);
+
+    return false;
+}
+
+static void qmp_chardev_open_socket(Chardev *chr,
+                                    ChardevBackend *backend,
+                                    bool *be_opened,
+                                    Error **errp)
+{
+    SocketChardev *s = SOCKET_CHARDEV(chr);
+    ChardevSocket *sock = backend->u.socket.data;
+    SocketAddress *addr = sock->addr;
+    bool do_nodelay     = sock->has_nodelay ? sock->nodelay : false;
+    bool is_listen      = sock->has_server  ? sock->server  : true;
+    bool is_telnet      = sock->has_telnet  ? sock->telnet  : false;
+    bool is_waitconnect = sock->has_wait    ? sock->wait    : false;
+    int64_t reconnect   = sock->has_reconnect ? sock->reconnect : 0;
+    QIOChannelSocket *sioc = NULL;
+
+    s->is_unix = addr->type == SOCKET_ADDRESS_KIND_UNIX;
+    s->is_listen = is_listen;
+    s->is_telnet = is_telnet;
+    s->do_nodelay = do_nodelay;
+    if (sock->tls_creds) {
+        Object *creds;
+        creds = object_resolve_path_component(
+            object_get_objects_root(), sock->tls_creds);
+        if (!creds) {
+            error_setg(errp, "No TLS credentials with id '%s'",
+                       sock->tls_creds);
+            goto error;
+        }
+        s->tls_creds = (QCryptoTLSCreds *)
+            object_dynamic_cast(creds,
+                                TYPE_QCRYPTO_TLS_CREDS);
+        if (!s->tls_creds) {
+            error_setg(errp, "Object with id '%s' is not TLS credentials",
+                       sock->tls_creds);
+            goto error;
+        }
+        object_ref(OBJECT(s->tls_creds));
+        if (is_listen) {
+            if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) {
+                error_setg(errp, "%s",
+                           "Expected TLS credentials for server endpoint");
+                goto error;
+            }
+        } else {
+            if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) {
+                error_setg(errp, "%s",
+                           "Expected TLS credentials for client endpoint");
+                goto error;
+            }
+        }
+    }
+
+    s->addr = QAPI_CLONE(SocketAddress, sock->addr);
+
+    qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_RECONNECTABLE);
+    if (s->is_unix) {
+        qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_FD_PASS);
+    }
+
+    /* be isn't opened until we get a connection */
+    *be_opened = false;
+
+    chr->filename = SocketAddress_to_str("disconnected:",
+                                         addr, is_listen, is_telnet);
+
+    if (is_listen) {
+        if (is_telnet) {
+            s->do_telnetopt = 1;
+        }
+    } else if (reconnect > 0) {
+        s->reconnect_time = reconnect;
+    }
+
+    if (s->reconnect_time) {
+        sioc = qio_channel_socket_new();
+        tcp_chr_set_client_ioc_name(chr, sioc);
+        qio_channel_socket_connect_async(sioc, s->addr,
+                                         qemu_chr_socket_connected,
+                                         chr, NULL);
+    } else {
+        if (s->is_listen) {
+            char *name;
+            sioc = qio_channel_socket_new();
+
+            name = g_strdup_printf("chardev-tcp-listener-%s", chr->label);
+            qio_channel_set_name(QIO_CHANNEL(sioc), name);
+            g_free(name);
+
+            if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) {
+                goto error;
+            }
+            s->listen_ioc = sioc;
+            if (is_waitconnect &&
+                qemu_chr_wait_connected(chr, errp) < 0) {
+                return;
+            }
+            if (!s->ioc) {
+                s->listen_tag = qio_channel_add_watch(
+                    QIO_CHANNEL(s->listen_ioc), G_IO_IN,
+                    tcp_chr_accept, chr, NULL);
+            }
+        } else if (qemu_chr_wait_connected(chr, errp) < 0) {
+            goto error;
+        }
+    }
+
+    return;
+
+error:
+    if (sioc) {
+        object_unref(OBJECT(sioc));
+    }
+}
+
+static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
+                                  Error **errp)
+{
+    bool is_listen      = qemu_opt_get_bool(opts, "server", false);
+    bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
+    bool is_telnet      = qemu_opt_get_bool(opts, "telnet", false);
+    bool do_nodelay     = !qemu_opt_get_bool(opts, "delay", true);
+    int64_t reconnect   = qemu_opt_get_number(opts, "reconnect", 0);
+    const char *path = qemu_opt_get(opts, "path");
+    const char *host = qemu_opt_get(opts, "host");
+    const char *port = qemu_opt_get(opts, "port");
+    const char *tls_creds = qemu_opt_get(opts, "tls-creds");
+    SocketAddress *addr;
+    ChardevSocket *sock;
+
+    backend->type = CHARDEV_BACKEND_KIND_SOCKET;
+    if (!path) {
+        if (!host) {
+            error_setg(errp, "chardev: socket: no host given");
+            return;
+        }
+        if (!port) {
+            error_setg(errp, "chardev: socket: no port given");
+            return;
+        }
+    } else {
+        if (tls_creds) {
+            error_setg(errp, "TLS can only be used over TCP socket");
+            return;
+        }
+    }
+
+    sock = backend->u.socket.data = g_new0(ChardevSocket, 1);
+    qemu_chr_parse_common(opts, qapi_ChardevSocket_base(sock));
+
+    sock->has_nodelay = true;
+    sock->nodelay = do_nodelay;
+    sock->has_server = true;
+    sock->server = is_listen;
+    sock->has_telnet = true;
+    sock->telnet = is_telnet;
+    sock->has_wait = true;
+    sock->wait = is_waitconnect;
+    sock->has_reconnect = true;
+    sock->reconnect = reconnect;
+    sock->tls_creds = g_strdup(tls_creds);
+
+    addr = g_new0(SocketAddress, 1);
+    if (path) {
+        UnixSocketAddress *q_unix;
+        addr->type = SOCKET_ADDRESS_KIND_UNIX;
+        q_unix = addr->u.q_unix.data = g_new0(UnixSocketAddress, 1);
+        q_unix->path = g_strdup(path);
+    } else {
+        addr->type = SOCKET_ADDRESS_KIND_INET;
+        addr->u.inet.data = g_new(InetSocketAddress, 1);
+        *addr->u.inet.data = (InetSocketAddress) {
+            .host = g_strdup(host),
+            .port = g_strdup(port),
+            .has_to = qemu_opt_get(opts, "to"),
+            .to = qemu_opt_get_number(opts, "to", 0),
+            .has_ipv4 = qemu_opt_get(opts, "ipv4"),
+            .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
+            .has_ipv6 = qemu_opt_get(opts, "ipv6"),
+            .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
+        };
+    }
+    sock->addr = addr;
+}
+
+static void char_socket_class_init(ObjectClass *oc, void *data)
+{
+    ChardevClass *cc = CHARDEV_CLASS(oc);
+
+    cc->parse = qemu_chr_parse_socket;
+    cc->open = qmp_chardev_open_socket;
+    cc->chr_wait_connected = tcp_chr_wait_connected;
+    cc->chr_write = tcp_chr_write;
+    cc->chr_sync_read = tcp_chr_sync_read;
+    cc->chr_disconnect = tcp_chr_disconnect;
+    cc->get_msgfds = tcp_get_msgfds;
+    cc->set_msgfds = tcp_set_msgfds;
+    cc->chr_add_client = tcp_chr_add_client;
+    cc->chr_add_watch = tcp_chr_add_watch;
+    cc->chr_update_read_handler = tcp_chr_update_read_handler;
+}
+
+static const TypeInfo char_socket_type_info = {
+    .name = TYPE_CHARDEV_SOCKET,
+    .parent = TYPE_CHARDEV,
+    .instance_size = sizeof(SocketChardev),
+    .instance_finalize = char_socket_finalize,
+    .class_init = char_socket_class_init,
+};
+
+static void register_types(void)
+{
+    type_register_static(&char_socket_type_info);
+}
+
+type_init(register_types);
diff --git a/chardev/char.c b/chardev/char.c
index 3c8a6038ff..6d31d36ce9 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -93,71 +93,6 @@
 #include "char-win-stdio.h"
 #endif
 
-#define TCP_MAX_FDS 16
-
-/***********************************************************/
-/* Socket address helpers */
-
-static char *SocketAddress_to_str(const char *prefix, SocketAddress *addr,
-                                  bool is_listen, bool is_telnet)
-{
-    switch (addr->type) {
-    case SOCKET_ADDRESS_KIND_INET:
-        return g_strdup_printf("%s%s:%s:%s%s", prefix,
-                               is_telnet ? "telnet" : "tcp",
-                               addr->u.inet.data->host,
-                               addr->u.inet.data->port,
-                               is_listen ? ",server" : "");
-        break;
-    case SOCKET_ADDRESS_KIND_UNIX:
-        return g_strdup_printf("%sunix:%s%s", prefix,
-                               addr->u.q_unix.data->path,
-                               is_listen ? ",server" : "");
-        break;
-    case SOCKET_ADDRESS_KIND_FD:
-        return g_strdup_printf("%sfd:%s%s", prefix, addr->u.fd.data->str,
-                               is_listen ? ",server" : "");
-        break;
-    default:
-        abort();
-    }
-}
-
-static char *sockaddr_to_str(struct sockaddr_storage *ss, socklen_t ss_len,
-                             struct sockaddr_storage *ps, socklen_t ps_len,
-                             bool is_listen, bool is_telnet)
-{
-    char shost[NI_MAXHOST], sserv[NI_MAXSERV];
-    char phost[NI_MAXHOST], pserv[NI_MAXSERV];
-    const char *left = "", *right = "";
-
-    switch (ss->ss_family) {
-#ifndef _WIN32
-    case AF_UNIX:
-        return g_strdup_printf("unix:%s%s",
-                               ((struct sockaddr_un *)(ss))->sun_path,
-                               is_listen ? ",server" : "");
-#endif
-    case AF_INET6:
-        left  = "[";
-        right = "]";
-        /* fall through */
-    case AF_INET:
-        getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost),
-                    sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV);
-        getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost),
-                    pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV);
-        return g_strdup_printf("%s:%s%s%s:%s%s <-> %s%s%s:%s",
-                               is_telnet ? "telnet" : "tcp",
-                               left, shost, right, sserv,
-                               is_listen ? ",server" : "",
-                               left, phost, right, pserv);
-
-    default:
-        return g_strdup_printf("unknown");
-    }
-}
-
 /***********************************************************/
 /* character device */
 
@@ -1672,642 +1607,7 @@ static void char_udp_finalize(Object *obj)
     qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
 }
 
-/***********************************************************/
-/* TCP Net console */
-
-typedef struct {
-    Chardev parent;
-    QIOChannel *ioc; /* Client I/O channel */
-    QIOChannelSocket *sioc; /* Client master channel */
-    QIOChannelSocket *listen_ioc;
-    guint listen_tag;
-    QCryptoTLSCreds *tls_creds;
-    int connected;
-    int max_size;
-    int do_telnetopt;
-    int do_nodelay;
-    int is_unix;
-    int *read_msgfds;
-    size_t read_msgfds_num;
-    int *write_msgfds;
-    size_t write_msgfds_num;
-
-    SocketAddress *addr;
-    bool is_listen;
-    bool is_telnet;
-
-    guint reconnect_timer;
-    int64_t reconnect_time;
-    bool connect_err_reported;
-} SocketChardev;
-
-#define SOCKET_CHARDEV(obj)                                     \
-    OBJECT_CHECK(SocketChardev, (obj), TYPE_CHARDEV_SOCKET)
-
-static gboolean socket_reconnect_timeout(gpointer opaque);
-
-static void qemu_chr_socket_restart_timer(Chardev *chr)
-{
-    SocketChardev *s = SOCKET_CHARDEV(chr);
-    char *name;
-
-    assert(s->connected == 0);
-    s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time,
-                                               socket_reconnect_timeout, chr);
-    name = g_strdup_printf("chardev-socket-reconnect-%s", chr->label);
-    g_source_set_name_by_id(s->reconnect_timer, name);
-    g_free(name);
-}
-
-static void check_report_connect_error(Chardev *chr,
-                                       Error *err)
-{
-    SocketChardev *s = SOCKET_CHARDEV(chr);
-
-    if (!s->connect_err_reported) {
-        error_report("Unable to connect character device %s: %s",
-                     chr->label, error_get_pretty(err));
-        s->connect_err_reported = true;
-    }
-    qemu_chr_socket_restart_timer(chr);
-}
-
-static gboolean tcp_chr_accept(QIOChannel *chan,
-                               GIOCondition cond,
-                               void *opaque);
-
-/* Called with chr_write_lock held.  */
-static int tcp_chr_write(Chardev *chr, const uint8_t *buf, int len)
-{
-    SocketChardev *s = SOCKET_CHARDEV(chr);
-
-    if (s->connected) {
-        int ret =  io_channel_send_full(s->ioc, buf, len,
-                                        s->write_msgfds,
-                                        s->write_msgfds_num);
-
-        /* free the written msgfds, no matter what */
-        if (s->write_msgfds_num) {
-            g_free(s->write_msgfds);
-            s->write_msgfds = 0;
-            s->write_msgfds_num = 0;
-        }
-
-        return ret;
-    } else {
-        /* XXX: indicate an error ? */
-        return len;
-    }
-}
-
-static int tcp_chr_read_poll(void *opaque)
-{
-    Chardev *chr = CHARDEV(opaque);
-    SocketChardev *s = SOCKET_CHARDEV(opaque);
-    if (!s->connected)
-        return 0;
-    s->max_size = qemu_chr_be_can_write(chr);
-    return s->max_size;
-}
-
-#define IAC 255
-#define IAC_BREAK 243
-static void tcp_chr_process_IAC_bytes(Chardev *chr,
-                                      SocketChardev *s,
-                                      uint8_t *buf, int *size)
-{
-    /* Handle any telnet client's basic IAC options to satisfy char by
-     * char mode with no echo.  All IAC options will be removed from
-     * the buf and the do_telnetopt variable will be used to track the
-     * state of the width of the IAC information.
-     *
-     * IAC commands come in sets of 3 bytes with the exception of the
-     * "IAC BREAK" command and the double IAC.
-     */
-
-    int i;
-    int j = 0;
-
-    for (i = 0; i < *size; i++) {
-        if (s->do_telnetopt > 1) {
-            if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
-                /* Double IAC means send an IAC */
-                if (j != i)
-                    buf[j] = buf[i];
-                j++;
-                s->do_telnetopt = 1;
-            } else {
-                if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
-                    /* Handle IAC break commands by sending a serial break */
-                    qemu_chr_be_event(chr, CHR_EVENT_BREAK);
-                    s->do_telnetopt++;
-                }
-                s->do_telnetopt++;
-            }
-            if (s->do_telnetopt >= 4) {
-                s->do_telnetopt = 1;
-            }
-        } else {
-            if ((unsigned char)buf[i] == IAC) {
-                s->do_telnetopt = 2;
-            } else {
-                if (j != i)
-                    buf[j] = buf[i];
-                j++;
-            }
-        }
-    }
-    *size = j;
-}
-
-static int tcp_get_msgfds(Chardev *chr, int *fds, int num)
-{
-    SocketChardev *s = SOCKET_CHARDEV(chr);
-
-    int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num;
-
-    assert(num <= TCP_MAX_FDS);
-
-    if (to_copy) {
-        int i;
-
-        memcpy(fds, s->read_msgfds, to_copy * sizeof(int));
-
-        /* Close unused fds */
-        for (i = to_copy; i < s->read_msgfds_num; i++) {
-            close(s->read_msgfds[i]);
-        }
-
-        g_free(s->read_msgfds);
-        s->read_msgfds = 0;
-        s->read_msgfds_num = 0;
-    }
-
-    return to_copy;
-}
-
-static int tcp_set_msgfds(Chardev *chr, int *fds, int num)
-{
-    SocketChardev *s = SOCKET_CHARDEV(chr);
-
-    /* clear old pending fd array */
-    g_free(s->write_msgfds);
-    s->write_msgfds = NULL;
-    s->write_msgfds_num = 0;
-
-    if (!s->connected ||
-        !qio_channel_has_feature(s->ioc,
-                                 QIO_CHANNEL_FEATURE_FD_PASS)) {
-        return -1;
-    }
-
-    if (num) {
-        s->write_msgfds = g_new(int, num);
-        memcpy(s->write_msgfds, fds, num * sizeof(int));
-    }
-
-    s->write_msgfds_num = num;
-
-    return 0;
-}
-
-static ssize_t tcp_chr_recv(Chardev *chr, char *buf, size_t len)
-{
-    SocketChardev *s = SOCKET_CHARDEV(chr);
-    struct iovec iov = { .iov_base = buf, .iov_len = len };
-    int ret;
-    size_t i;
-    int *msgfds = NULL;
-    size_t msgfds_num = 0;
-
-    if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) {
-        ret = qio_channel_readv_full(s->ioc, &iov, 1,
-                                     &msgfds, &msgfds_num,
-                                     NULL);
-    } else {
-        ret = qio_channel_readv_full(s->ioc, &iov, 1,
-                                     NULL, NULL,
-                                     NULL);
-    }
-
-    if (ret == QIO_CHANNEL_ERR_BLOCK) {
-        errno = EAGAIN;
-        ret = -1;
-    } else if (ret == -1) {
-        errno = EIO;
-    }
-
-    if (msgfds_num) {
-        /* close and clean read_msgfds */
-        for (i = 0; i < s->read_msgfds_num; i++) {
-            close(s->read_msgfds[i]);
-        }
-
-        if (s->read_msgfds_num) {
-            g_free(s->read_msgfds);
-        }
-
-        s->read_msgfds = msgfds;
-        s->read_msgfds_num = msgfds_num;
-    }
-
-    for (i = 0; i < s->read_msgfds_num; i++) {
-        int fd = s->read_msgfds[i];
-        if (fd < 0) {
-            continue;
-        }
-
-        /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
-        qemu_set_block(fd);
-
-#ifndef MSG_CMSG_CLOEXEC
-        qemu_set_cloexec(fd);
-#endif
-    }
-
-    return ret;
-}
-
-static GSource *tcp_chr_add_watch(Chardev *chr, GIOCondition cond)
-{
-    SocketChardev *s = SOCKET_CHARDEV(chr);
-    return qio_channel_create_watch(s->ioc, cond);
-}
-
-static void tcp_chr_free_connection(Chardev *chr)
-{
-    SocketChardev *s = SOCKET_CHARDEV(chr);
-    int i;
-
-    if (!s->connected) {
-        return;
-    }
-
-    if (s->read_msgfds_num) {
-        for (i = 0; i < s->read_msgfds_num; i++) {
-            close(s->read_msgfds[i]);
-        }
-        g_free(s->read_msgfds);
-        s->read_msgfds = NULL;
-        s->read_msgfds_num = 0;
-    }
-
-    tcp_set_msgfds(chr, NULL, 0);
-    remove_fd_in_watch(chr);
-    object_unref(OBJECT(s->sioc));
-    s->sioc = NULL;
-    object_unref(OBJECT(s->ioc));
-    s->ioc = NULL;
-    g_free(chr->filename);
-    chr->filename = NULL;
-    s->connected = 0;
-}
-
-static void tcp_chr_disconnect(Chardev *chr)
-{
-    SocketChardev *s = SOCKET_CHARDEV(chr);
-
-    if (!s->connected) {
-        return;
-    }
-
-    tcp_chr_free_connection(chr);
-
-    if (s->listen_ioc) {
-        s->listen_tag = qio_channel_add_watch(
-            QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
-    }
-    chr->filename = SocketAddress_to_str("disconnected:", s->addr,
-                                         s->is_listen, s->is_telnet);
-    qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
-    if (s->reconnect_time) {
-        qemu_chr_socket_restart_timer(chr);
-    }
-}
-
-static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
-{
-    Chardev *chr = CHARDEV(opaque);
-    SocketChardev *s = SOCKET_CHARDEV(opaque);
-    uint8_t buf[CHR_READ_BUF_LEN];
-    int len, size;
-
-    if (!s->connected || s->max_size <= 0) {
-        return TRUE;
-    }
-    len = sizeof(buf);
-    if (len > s->max_size)
-        len = s->max_size;
-    size = tcp_chr_recv(chr, (void *)buf, len);
-    if (size == 0 || size == -1) {
-        /* connection closed */
-        tcp_chr_disconnect(chr);
-    } else if (size > 0) {
-        if (s->do_telnetopt)
-            tcp_chr_process_IAC_bytes(chr, s, buf, &size);
-        if (size > 0)
-            qemu_chr_be_write(chr, buf, size);
-    }
-
-    return TRUE;
-}
-
-static int tcp_chr_sync_read(Chardev *chr, const uint8_t *buf, int len)
-{
-    SocketChardev *s = SOCKET_CHARDEV(chr);
-    int size;
-
-    if (!s->connected) {
-        return 0;
-    }
-
-    size = tcp_chr_recv(chr, (void *) buf, len);
-    if (size == 0) {
-        /* connection closed */
-        tcp_chr_disconnect(chr);
-    }
-
-    return size;
-}
-
-static void tcp_chr_connect(void *opaque)
-{
-    Chardev *chr = CHARDEV(opaque);
-    SocketChardev *s = SOCKET_CHARDEV(opaque);
-
-    g_free(chr->filename);
-    chr->filename = sockaddr_to_str(
-        &s->sioc->localAddr, s->sioc->localAddrLen,
-        &s->sioc->remoteAddr, s->sioc->remoteAddrLen,
-        s->is_listen, s->is_telnet);
-
-    s->connected = 1;
-    if (s->ioc) {
-        chr->fd_in_tag = io_add_watch_poll(chr, s->ioc,
-                                           tcp_chr_read_poll,
-                                           tcp_chr_read,
-                                           chr, NULL);
-    }
-    qemu_chr_be_generic_open(chr);
-}
-
-static void tcp_chr_update_read_handler(Chardev *chr,
-                                        GMainContext *context)
-{
-    SocketChardev *s = SOCKET_CHARDEV(chr);
-
-    if (!s->connected) {
-        return;
-    }
-
-    remove_fd_in_watch(chr);
-    if (s->ioc) {
-        chr->fd_in_tag = io_add_watch_poll(chr, s->ioc,
-                                           tcp_chr_read_poll,
-                                           tcp_chr_read, chr,
-                                           context);
-    }
-}
-
-typedef struct {
-    Chardev *chr;
-    char buf[12];
-    size_t buflen;
-} TCPChardevTelnetInit;
-
-static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc,
-                                       GIOCondition cond G_GNUC_UNUSED,
-                                       gpointer user_data)
-{
-    TCPChardevTelnetInit *init = user_data;
-    ssize_t ret;
-
-    ret = qio_channel_write(ioc, init->buf, init->buflen, NULL);
-    if (ret < 0) {
-        if (ret == QIO_CHANNEL_ERR_BLOCK) {
-            ret = 0;
-        } else {
-            tcp_chr_disconnect(init->chr);
-            return FALSE;
-        }
-    }
-    init->buflen -= ret;
-
-    if (init->buflen == 0) {
-        tcp_chr_connect(init->chr);
-        return FALSE;
-    }
-
-    memmove(init->buf, init->buf + ret, init->buflen);
-
-    return TRUE;
-}
-
-static void tcp_chr_telnet_init(Chardev *chr)
-{
-    SocketChardev *s = SOCKET_CHARDEV(chr);
-    TCPChardevTelnetInit *init =
-        g_new0(TCPChardevTelnetInit, 1);
-    size_t n = 0;
-
-    init->chr = chr;
-    init->buflen = 12;
-
-#define IACSET(x, a, b, c)                      \
-    do {                                        \
-        x[n++] = a;                             \
-        x[n++] = b;                             \
-        x[n++] = c;                             \
-    } while (0)
-
-    /* Prep the telnet negotion to put telnet in binary,
-     * no echo, single char mode */
-    IACSET(init->buf, 0xff, 0xfb, 0x01);  /* IAC WILL ECHO */
-    IACSET(init->buf, 0xff, 0xfb, 0x03);  /* IAC WILL Suppress go ahead */
-    IACSET(init->buf, 0xff, 0xfb, 0x00);  /* IAC WILL Binary */
-    IACSET(init->buf, 0xff, 0xfd, 0x00);  /* IAC DO Binary */
-
-#undef IACSET
-
-    qio_channel_add_watch(
-        s->ioc, G_IO_OUT,
-        tcp_chr_telnet_init_io,
-        init, NULL);
-}
-
-
-static void tcp_chr_tls_handshake(Object *source,
-                                  Error *err,
-                                  gpointer user_data)
-{
-    Chardev *chr = user_data;
-    SocketChardev *s = user_data;
-
-    if (err) {
-        tcp_chr_disconnect(chr);
-    } else {
-        if (s->do_telnetopt) {
-            tcp_chr_telnet_init(chr);
-        } else {
-            tcp_chr_connect(chr);
-        }
-    }
-}
-
-
-static void tcp_chr_tls_init(Chardev *chr)
-{
-    SocketChardev *s = SOCKET_CHARDEV(chr);
-    QIOChannelTLS *tioc;
-    Error *err = NULL;
-    gchar *name;
-
-    if (s->is_listen) {
-        tioc = qio_channel_tls_new_server(
-            s->ioc, s->tls_creds,
-            NULL, /* XXX Use an ACL */
-            &err);
-    } else {
-        tioc = qio_channel_tls_new_client(
-            s->ioc, s->tls_creds,
-            s->addr->u.inet.data->host,
-            &err);
-    }
-    if (tioc == NULL) {
-        error_free(err);
-        tcp_chr_disconnect(chr);
-        return;
-    }
-    name = g_strdup_printf("chardev-tls-%s-%s",
-                           s->is_listen ? "server" : "client",
-                           chr->label);
-    qio_channel_set_name(QIO_CHANNEL(tioc), name);
-    g_free(name);
-    object_unref(OBJECT(s->ioc));
-    s->ioc = QIO_CHANNEL(tioc);
-
-    qio_channel_tls_handshake(tioc,
-                              tcp_chr_tls_handshake,
-                              chr,
-                              NULL);
-}
-
-
-static void tcp_chr_set_client_ioc_name(Chardev *chr,
-                                        QIOChannelSocket *sioc)
-{
-    SocketChardev *s = SOCKET_CHARDEV(chr);
-    char *name;
-    name = g_strdup_printf("chardev-tcp-%s-%s",
-                           s->is_listen ? "server" : "client",
-                           chr->label);
-    qio_channel_set_name(QIO_CHANNEL(sioc), name);
-    g_free(name);
-
-}
-
-static int tcp_chr_new_client(Chardev *chr, QIOChannelSocket *sioc)
-{
-    SocketChardev *s = SOCKET_CHARDEV(chr);
-
-    if (s->ioc != NULL) {
-	return -1;
-    }
-
-    s->ioc = QIO_CHANNEL(sioc);
-    object_ref(OBJECT(sioc));
-    s->sioc = sioc;
-    object_ref(OBJECT(sioc));
-
-    qio_channel_set_blocking(s->ioc, false, NULL);
-
-    if (s->do_nodelay) {
-        qio_channel_set_delay(s->ioc, false);
-    }
-    if (s->listen_tag) {
-        g_source_remove(s->listen_tag);
-        s->listen_tag = 0;
-    }
-
-    if (s->tls_creds) {
-        tcp_chr_tls_init(chr);
-    } else {
-        if (s->do_telnetopt) {
-            tcp_chr_telnet_init(chr);
-        } else {
-            tcp_chr_connect(chr);
-        }
-    }
-
-    return 0;
-}
-
-
-static int tcp_chr_add_client(Chardev *chr, int fd)
-{
-    int ret;
-    QIOChannelSocket *sioc;
-
-    sioc = qio_channel_socket_new_fd(fd, NULL);
-    if (!sioc) {
-        return -1;
-    }
-    tcp_chr_set_client_ioc_name(chr, sioc);
-    ret = tcp_chr_new_client(chr, sioc);
-    object_unref(OBJECT(sioc));
-    return ret;
-}
-
-static gboolean tcp_chr_accept(QIOChannel *channel,
-                               GIOCondition cond,
-                               void *opaque)
-{
-    Chardev *chr = CHARDEV(opaque);
-    QIOChannelSocket *sioc;
-
-    sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(channel),
-                                     NULL);
-    if (!sioc) {
-        return TRUE;
-    }
-
-    tcp_chr_new_client(chr, sioc);
-
-    object_unref(OBJECT(sioc));
-
-    return TRUE;
-}
-
-static int tcp_chr_wait_connected(Chardev *chr, Error **errp)
-{
-    SocketChardev *s = SOCKET_CHARDEV(chr);
-    QIOChannelSocket *sioc;
-
-    /* It can't wait on s->connected, since it is set asynchronously
-     * in TLS and telnet cases, only wait for an accepted socket */
-    while (!s->ioc) {
-        if (s->is_listen) {
-            error_report("QEMU waiting for connection on: %s",
-                         chr->filename);
-            qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), true, NULL);
-            tcp_chr_accept(QIO_CHANNEL(s->listen_ioc), G_IO_IN, chr);
-            qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL);
-        } else {
-            sioc = qio_channel_socket_new();
-            tcp_chr_set_client_ioc_name(chr, sioc);
-            if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) {
-                object_unref(OBJECT(sioc));
-                return -1;
-            }
-            tcp_chr_new_client(chr, sioc);
-            object_unref(OBJECT(sioc));
-        }
-    }
-
-    return 0;
-}
-
-static int qemu_chr_wait_connected(Chardev *chr, Error **errp)
+int qemu_chr_wait_connected(Chardev *chr, Error **errp)
 {
     ChardevClass *cc = CHARDEV_GET_CLASS(chr);
 
@@ -2328,51 +1628,6 @@ int qemu_chr_fe_wait_connected(CharBackend *be, Error **errp)
     return qemu_chr_wait_connected(be->chr, errp);
 }
 
-static void char_socket_finalize(Object *obj)
-{
-    Chardev *chr = CHARDEV(obj);
-    SocketChardev *s = SOCKET_CHARDEV(obj);
-
-    tcp_chr_free_connection(chr);
-
-    if (s->reconnect_timer) {
-        g_source_remove(s->reconnect_timer);
-        s->reconnect_timer = 0;
-    }
-    qapi_free_SocketAddress(s->addr);
-    if (s->listen_tag) {
-        g_source_remove(s->listen_tag);
-        s->listen_tag = 0;
-    }
-    if (s->listen_ioc) {
-        object_unref(OBJECT(s->listen_ioc));
-    }
-    if (s->tls_creds) {
-        object_unref(OBJECT(s->tls_creds));
-    }
-
-    qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
-}
-
-
-static void qemu_chr_socket_connected(Object *src, Error *err, void *opaque)
-{
-    QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(src);
-    Chardev *chr = CHARDEV(opaque);
-    SocketChardev *s = SOCKET_CHARDEV(chr);
-
-    if (err) {
-        check_report_connect_error(chr, err);
-        object_unref(src);
-        return;
-    }
-
-    s->connect_err_reported = false;
-    tcp_chr_new_client(chr, sioc);
-    object_unref(OBJECT(sioc));
-}
-
-
 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
 {
     char host[65], port[33], width[8], height[8];
@@ -2650,76 +1905,6 @@ static const TypeInfo char_pipe_type_info = {
     .class_init = char_pipe_class_init,
 };
 
-static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
-                                  Error **errp)
-{
-    bool is_listen      = qemu_opt_get_bool(opts, "server", false);
-    bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
-    bool is_telnet      = qemu_opt_get_bool(opts, "telnet", false);
-    bool do_nodelay     = !qemu_opt_get_bool(opts, "delay", true);
-    int64_t reconnect   = qemu_opt_get_number(opts, "reconnect", 0);
-    const char *path = qemu_opt_get(opts, "path");
-    const char *host = qemu_opt_get(opts, "host");
-    const char *port = qemu_opt_get(opts, "port");
-    const char *tls_creds = qemu_opt_get(opts, "tls-creds");
-    SocketAddress *addr;
-    ChardevSocket *sock;
-
-    backend->type = CHARDEV_BACKEND_KIND_SOCKET;
-    if (!path) {
-        if (!host) {
-            error_setg(errp, "chardev: socket: no host given");
-            return;
-        }
-        if (!port) {
-            error_setg(errp, "chardev: socket: no port given");
-            return;
-        }
-    } else {
-        if (tls_creds) {
-            error_setg(errp, "TLS can only be used over TCP socket");
-            return;
-        }
-    }
-
-    sock = backend->u.socket.data = g_new0(ChardevSocket, 1);
-    qemu_chr_parse_common(opts, qapi_ChardevSocket_base(sock));
-
-    sock->has_nodelay = true;
-    sock->nodelay = do_nodelay;
-    sock->has_server = true;
-    sock->server = is_listen;
-    sock->has_telnet = true;
-    sock->telnet = is_telnet;
-    sock->has_wait = true;
-    sock->wait = is_waitconnect;
-    sock->has_reconnect = true;
-    sock->reconnect = reconnect;
-    sock->tls_creds = g_strdup(tls_creds);
-
-    addr = g_new0(SocketAddress, 1);
-    if (path) {
-        UnixSocketAddress *q_unix;
-        addr->type = SOCKET_ADDRESS_KIND_UNIX;
-        q_unix = addr->u.q_unix.data = g_new0(UnixSocketAddress, 1);
-        q_unix->path = g_strdup(path);
-    } else {
-        addr->type = SOCKET_ADDRESS_KIND_INET;
-        addr->u.inet.data = g_new(InetSocketAddress, 1);
-        *addr->u.inet.data = (InetSocketAddress) {
-            .host = g_strdup(host),
-            .port = g_strdup(port),
-            .has_to = qemu_opt_get(opts, "to"),
-            .to = qemu_opt_get_number(opts, "to", 0),
-            .has_ipv4 = qemu_opt_get(opts, "ipv4"),
-            .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
-            .has_ipv6 = qemu_opt_get(opts, "ipv6"),
-            .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
-        };
-    }
-    sock->addr = addr;
-}
-
 static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
                                Error **errp)
 {
@@ -3403,166 +2588,6 @@ static const TypeInfo char_serial_type_info = {
 };
 #endif
 
-static gboolean socket_reconnect_timeout(gpointer opaque)
-{
-    Chardev *chr = CHARDEV(opaque);
-    SocketChardev *s = SOCKET_CHARDEV(opaque);
-    QIOChannelSocket *sioc;
-
-    s->reconnect_timer = 0;
-
-    if (chr->be_open) {
-        return false;
-    }
-
-    sioc = qio_channel_socket_new();
-    tcp_chr_set_client_ioc_name(chr, sioc);
-    qio_channel_socket_connect_async(sioc, s->addr,
-                                     qemu_chr_socket_connected,
-                                     chr, NULL);
-
-    return false;
-}
-
-static void qmp_chardev_open_socket(Chardev *chr,
-                                    ChardevBackend *backend,
-                                    bool *be_opened,
-                                    Error **errp)
-{
-    SocketChardev *s = SOCKET_CHARDEV(chr);
-    ChardevSocket *sock = backend->u.socket.data;
-    SocketAddress *addr = sock->addr;
-    bool do_nodelay     = sock->has_nodelay ? sock->nodelay : false;
-    bool is_listen      = sock->has_server  ? sock->server  : true;
-    bool is_telnet      = sock->has_telnet  ? sock->telnet  : false;
-    bool is_waitconnect = sock->has_wait    ? sock->wait    : false;
-    int64_t reconnect   = sock->has_reconnect ? sock->reconnect : 0;
-    QIOChannelSocket *sioc = NULL;
-
-    s->is_unix = addr->type == SOCKET_ADDRESS_KIND_UNIX;
-    s->is_listen = is_listen;
-    s->is_telnet = is_telnet;
-    s->do_nodelay = do_nodelay;
-    if (sock->tls_creds) {
-        Object *creds;
-        creds = object_resolve_path_component(
-            object_get_objects_root(), sock->tls_creds);
-        if (!creds) {
-            error_setg(errp, "No TLS credentials with id '%s'",
-                       sock->tls_creds);
-            goto error;
-        }
-        s->tls_creds = (QCryptoTLSCreds *)
-            object_dynamic_cast(creds,
-                                TYPE_QCRYPTO_TLS_CREDS);
-        if (!s->tls_creds) {
-            error_setg(errp, "Object with id '%s' is not TLS credentials",
-                       sock->tls_creds);
-            goto error;
-        }
-        object_ref(OBJECT(s->tls_creds));
-        if (is_listen) {
-            if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) {
-                error_setg(errp, "%s",
-                           "Expected TLS credentials for server endpoint");
-                goto error;
-            }
-        } else {
-            if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) {
-                error_setg(errp, "%s",
-                           "Expected TLS credentials for client endpoint");
-                goto error;
-            }
-        }
-    }
-
-    s->addr = QAPI_CLONE(SocketAddress, sock->addr);
-
-    qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_RECONNECTABLE);
-    if (s->is_unix) {
-        qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_FD_PASS);
-    }
-
-    /* be isn't opened until we get a connection */
-    *be_opened = false;
-
-    chr->filename = SocketAddress_to_str("disconnected:",
-                                         addr, is_listen, is_telnet);
-
-    if (is_listen) {
-        if (is_telnet) {
-            s->do_telnetopt = 1;
-        }
-    } else if (reconnect > 0) {
-        s->reconnect_time = reconnect;
-    }
-
-    if (s->reconnect_time) {
-        sioc = qio_channel_socket_new();
-        tcp_chr_set_client_ioc_name(chr, sioc);
-        qio_channel_socket_connect_async(sioc, s->addr,
-                                         qemu_chr_socket_connected,
-                                         chr, NULL);
-    } else {
-        if (s->is_listen) {
-            char *name;
-            sioc = qio_channel_socket_new();
-
-            name = g_strdup_printf("chardev-tcp-listener-%s", chr->label);
-            qio_channel_set_name(QIO_CHANNEL(sioc), name);
-            g_free(name);
-
-            if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) {
-                goto error;
-            }
-            s->listen_ioc = sioc;
-            if (is_waitconnect &&
-                qemu_chr_wait_connected(chr, errp) < 0) {
-                return;
-            }
-            if (!s->ioc) {
-                s->listen_tag = qio_channel_add_watch(
-                    QIO_CHANNEL(s->listen_ioc), G_IO_IN,
-                    tcp_chr_accept, chr, NULL);
-            }
-        } else if (qemu_chr_wait_connected(chr, errp) < 0) {
-            goto error;
-        }
-    }
-
-    return;
-
-error:
-    if (sioc) {
-        object_unref(OBJECT(sioc));
-    }
-}
-
-static void char_socket_class_init(ObjectClass *oc, void *data)
-{
-    ChardevClass *cc = CHARDEV_CLASS(oc);
-
-    cc->parse = qemu_chr_parse_socket;
-    cc->open = qmp_chardev_open_socket;
-    cc->chr_wait_connected = tcp_chr_wait_connected;
-    cc->chr_write = tcp_chr_write;
-    cc->chr_sync_read = tcp_chr_sync_read;
-    cc->chr_disconnect = tcp_chr_disconnect;
-    cc->get_msgfds = tcp_get_msgfds;
-    cc->set_msgfds = tcp_set_msgfds;
-    cc->chr_add_client = tcp_chr_add_client;
-    cc->chr_add_watch = tcp_chr_add_watch;
-    cc->chr_update_read_handler = tcp_chr_update_read_handler;
-}
-
-static const TypeInfo char_socket_type_info = {
-    .name = TYPE_CHARDEV_SOCKET,
-    .parent = TYPE_CHARDEV,
-    .instance_size = sizeof(SocketChardev),
-    .instance_finalize = char_socket_finalize,
-    .class_init = char_socket_class_init,
-};
-
 static void qmp_chardev_open_udp(Chardev *chr,
                                  ChardevBackend *backend,
                                  bool *be_opened,
@@ -3708,7 +2733,6 @@ void qemu_chr_cleanup(void)
 static void register_types(void)
 {
     type_register_static(&char_type_info);
-    type_register_static(&char_socket_type_info);
     type_register_static(&char_udp_type_info);
     type_register_static(&char_file_type_info);
     type_register_static(&char_stdio_type_info);
diff --git a/chardev/Makefile.objs b/chardev/Makefile.objs
index 3c4a328de8..c57c375d5b 100644
--- a/chardev/Makefile.objs
+++ b/chardev/Makefile.objs
@@ -4,5 +4,6 @@ chardev-obj-y += char-io.o
 chardev-obj-y += char-mux.o
 chardev-obj-y += char-null.o
 chardev-obj-y += char-ringbuf.o
+chardev-obj-y += char-socket.o
 chardev-obj-$(CONFIG_WIN32) += char-win.o
 chardev-obj-$(CONFIG_WIN32) += char-win-stdio.o
-- 
2.11.0

[Qemu-devel] [PATCH 32/40] char: move udp chardev in its own file

[Marc-André Lureau]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 chardev/char-udp.c    | 210 ++++++++++++++++++++++++++++++++++++++++++++++++++
 chardev/char.c        | 198 -----------------------------------------------
 chardev/Makefile.objs |   1 +
 3 files changed, 211 insertions(+), 198 deletions(-)
 create mode 100644 chardev/char-udp.c

diff --git a/chardev/char-udp.c b/chardev/char-udp.c
new file mode 100644
index 0000000000..3462297bdd
--- /dev/null
+++ b/chardev/char-udp.c
@@ -0,0 +1,210 @@
+#include "qemu/osdep.h"
+#include "sysemu/char.h"
+#include "io/channel-socket.h"
+#include "qapi/error.h"
+
+#include "char-io.h"
+
+/***********************************************************/
+/* UDP Net console */
+
+typedef struct {
+    Chardev parent;
+    QIOChannel *ioc;
+    uint8_t buf[CHR_READ_BUF_LEN];
+    int bufcnt;
+    int bufptr;
+    int max_size;
+} UdpChardev;
+
+#define UDP_CHARDEV(obj) OBJECT_CHECK(UdpChardev, (obj), TYPE_CHARDEV_UDP)
+
+/* Called with chr_write_lock held.  */
+static int udp_chr_write(Chardev *chr, const uint8_t *buf, int len)
+{
+    UdpChardev *s = UDP_CHARDEV(chr);
+
+    return qio_channel_write(
+        s->ioc, (const char *)buf, len, NULL);
+}
+
+static int udp_chr_read_poll(void *opaque)
+{
+    Chardev *chr = CHARDEV(opaque);
+    UdpChardev *s = UDP_CHARDEV(opaque);
+
+    s->max_size = qemu_chr_be_can_write(chr);
+
+    /* If there were any stray characters in the queue process them
+     * first
+     */
+    while (s->max_size > 0 && s->bufptr < s->bufcnt) {
+        qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
+        s->bufptr++;
+        s->max_size = qemu_chr_be_can_write(chr);
+    }
+    return s->max_size;
+}
+
+static gboolean udp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
+{
+    Chardev *chr = CHARDEV(opaque);
+    UdpChardev *s = UDP_CHARDEV(opaque);
+    ssize_t ret;
+
+    if (s->max_size == 0) {
+        return TRUE;
+    }
+    ret = qio_channel_read(
+        s->ioc, (char *)s->buf, sizeof(s->buf), NULL);
+    if (ret <= 0) {
+        remove_fd_in_watch(chr);
+        return FALSE;
+    }
+    s->bufcnt = ret;
+
+    s->bufptr = 0;
+    while (s->max_size > 0 && s->bufptr < s->bufcnt) {
+        qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
+        s->bufptr++;
+        s->max_size = qemu_chr_be_can_write(chr);
+    }
+
+    return TRUE;
+}
+
+static void udp_chr_update_read_handler(Chardev *chr,
+                                        GMainContext *context)
+{
+    UdpChardev *s = UDP_CHARDEV(chr);
+
+    remove_fd_in_watch(chr);
+    if (s->ioc) {
+        chr->fd_in_tag = io_add_watch_poll(chr, s->ioc,
+                                           udp_chr_read_poll,
+                                           udp_chr_read, chr,
+                                           context);
+    }
+}
+
+static void char_udp_finalize(Object *obj)
+{
+    Chardev *chr = CHARDEV(obj);
+    UdpChardev *s = UDP_CHARDEV(obj);
+
+    remove_fd_in_watch(chr);
+    if (s->ioc) {
+        object_unref(OBJECT(s->ioc));
+    }
+    qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
+}
+
+static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
+                               Error **errp)
+{
+    const char *host = qemu_opt_get(opts, "host");
+    const char *port = qemu_opt_get(opts, "port");
+    const char *localaddr = qemu_opt_get(opts, "localaddr");
+    const char *localport = qemu_opt_get(opts, "localport");
+    bool has_local = false;
+    SocketAddress *addr;
+    ChardevUdp *udp;
+
+    backend->type = CHARDEV_BACKEND_KIND_UDP;
+    if (host == NULL || strlen(host) == 0) {
+        host = "localhost";
+    }
+    if (port == NULL || strlen(port) == 0) {
+        error_setg(errp, "chardev: udp: remote port not specified");
+        return;
+    }
+    if (localport == NULL || strlen(localport) == 0) {
+        localport = "0";
+    } else {
+        has_local = true;
+    }
+    if (localaddr == NULL || strlen(localaddr) == 0) {
+        localaddr = "";
+    } else {
+        has_local = true;
+    }
+
+    udp = backend->u.udp.data = g_new0(ChardevUdp, 1);
+    qemu_chr_parse_common(opts, qapi_ChardevUdp_base(udp));
+
+    addr = g_new0(SocketAddress, 1);
+    addr->type = SOCKET_ADDRESS_KIND_INET;
+    addr->u.inet.data = g_new(InetSocketAddress, 1);
+    *addr->u.inet.data = (InetSocketAddress) {
+        .host = g_strdup(host),
+        .port = g_strdup(port),
+        .has_ipv4 = qemu_opt_get(opts, "ipv4"),
+        .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
+        .has_ipv6 = qemu_opt_get(opts, "ipv6"),
+        .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
+    };
+    udp->remote = addr;
+
+    if (has_local) {
+        udp->has_local = true;
+        addr = g_new0(SocketAddress, 1);
+        addr->type = SOCKET_ADDRESS_KIND_INET;
+        addr->u.inet.data = g_new(InetSocketAddress, 1);
+        *addr->u.inet.data = (InetSocketAddress) {
+            .host = g_strdup(localaddr),
+            .port = g_strdup(localport),
+        };
+        udp->local = addr;
+    }
+}
+
+static void qmp_chardev_open_udp(Chardev *chr,
+                                 ChardevBackend *backend,
+                                 bool *be_opened,
+                                 Error **errp)
+{
+    ChardevUdp *udp = backend->u.udp.data;
+    QIOChannelSocket *sioc = qio_channel_socket_new();
+    char *name;
+    UdpChardev *s = UDP_CHARDEV(chr);
+
+    if (qio_channel_socket_dgram_sync(sioc,
+                                      udp->local, udp->remote,
+                                      errp) < 0) {
+        object_unref(OBJECT(sioc));
+        return;
+    }
+
+    name = g_strdup_printf("chardev-udp-%s", chr->label);
+    qio_channel_set_name(QIO_CHANNEL(sioc), name);
+    g_free(name);
+
+    s->ioc = QIO_CHANNEL(sioc);
+    /* be isn't opened until we get a connection */
+    *be_opened = false;
+}
+
+static void char_udp_class_init(ObjectClass *oc, void *data)
+{
+    ChardevClass *cc = CHARDEV_CLASS(oc);
+
+    cc->parse = qemu_chr_parse_udp;
+    cc->open = qmp_chardev_open_udp;
+    cc->chr_write = udp_chr_write;
+    cc->chr_update_read_handler = udp_chr_update_read_handler;
+}
+
+static const TypeInfo char_udp_type_info = {
+    .name = TYPE_CHARDEV_UDP,
+    .parent = TYPE_CHARDEV,
+    .instance_size = sizeof(UdpChardev),
+    .instance_finalize = char_udp_finalize,
+    .class_init = char_udp_class_init,
+};
+
+static void register_types(void)
+{
+    type_register_static(&char_udp_type_info);
+}
+
+type_init(register_types);
diff --git a/chardev/char.c b/chardev/char.c
index 6d31d36ce9..2eb148714c 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -1513,100 +1513,6 @@ static const TypeInfo char_console_type_info = {
 
 #endif /* !_WIN32 */
 
-/***********************************************************/
-/* UDP Net console */
-
-typedef struct {
-    Chardev parent;
-    QIOChannel *ioc;
-    uint8_t buf[CHR_READ_BUF_LEN];
-    int bufcnt;
-    int bufptr;
-    int max_size;
-} UdpChardev;
-
-#define UDP_CHARDEV(obj) OBJECT_CHECK(UdpChardev, (obj), TYPE_CHARDEV_UDP)
-
-/* Called with chr_write_lock held.  */
-static int udp_chr_write(Chardev *chr, const uint8_t *buf, int len)
-{
-    UdpChardev *s = UDP_CHARDEV(chr);
-
-    return qio_channel_write(
-        s->ioc, (const char *)buf, len, NULL);
-}
-
-static int udp_chr_read_poll(void *opaque)
-{
-    Chardev *chr = CHARDEV(opaque);
-    UdpChardev *s = UDP_CHARDEV(opaque);
-
-    s->max_size = qemu_chr_be_can_write(chr);
-
-    /* If there were any stray characters in the queue process them
-     * first
-     */
-    while (s->max_size > 0 && s->bufptr < s->bufcnt) {
-        qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
-        s->bufptr++;
-        s->max_size = qemu_chr_be_can_write(chr);
-    }
-    return s->max_size;
-}
-
-static gboolean udp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
-{
-    Chardev *chr = CHARDEV(opaque);
-    UdpChardev *s = UDP_CHARDEV(opaque);
-    ssize_t ret;
-
-    if (s->max_size == 0) {
-        return TRUE;
-    }
-    ret = qio_channel_read(
-        s->ioc, (char *)s->buf, sizeof(s->buf), NULL);
-    if (ret <= 0) {
-        remove_fd_in_watch(chr);
-        return FALSE;
-    }
-    s->bufcnt = ret;
-
-    s->bufptr = 0;
-    while (s->max_size > 0 && s->bufptr < s->bufcnt) {
-        qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
-        s->bufptr++;
-        s->max_size = qemu_chr_be_can_write(chr);
-    }
-
-    return TRUE;
-}
-
-static void udp_chr_update_read_handler(Chardev *chr,
-                                        GMainContext *context)
-{
-    UdpChardev *s = UDP_CHARDEV(chr);
-
-    remove_fd_in_watch(chr);
-    if (s->ioc) {
-        chr->fd_in_tag = io_add_watch_poll(chr, s->ioc,
-                                           udp_chr_read_poll,
-                                           udp_chr_read, chr,
-                                           context);
-    }
-}
-
-static void char_udp_finalize(Object *obj)
-{
-    Chardev *chr = CHARDEV(obj);
-    UdpChardev *s = UDP_CHARDEV(obj);
-
-    remove_fd_in_watch(chr);
-    if (s->ioc) {
-        object_unref(OBJECT(s->ioc));
-    }
-    qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
-}
-
 int qemu_chr_wait_connected(Chardev *chr, Error **errp)
 {
     ChardevClass *cc = CHARDEV_GET_CLASS(chr);
@@ -1905,65 +1811,6 @@ static const TypeInfo char_pipe_type_info = {
     .class_init = char_pipe_class_init,
 };
 
-static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
-                               Error **errp)
-{
-    const char *host = qemu_opt_get(opts, "host");
-    const char *port = qemu_opt_get(opts, "port");
-    const char *localaddr = qemu_opt_get(opts, "localaddr");
-    const char *localport = qemu_opt_get(opts, "localport");
-    bool has_local = false;
-    SocketAddress *addr;
-    ChardevUdp *udp;
-
-    backend->type = CHARDEV_BACKEND_KIND_UDP;
-    if (host == NULL || strlen(host) == 0) {
-        host = "localhost";
-    }
-    if (port == NULL || strlen(port) == 0) {
-        error_setg(errp, "chardev: udp: remote port not specified");
-        return;
-    }
-    if (localport == NULL || strlen(localport) == 0) {
-        localport = "0";
-    } else {
-        has_local = true;
-    }
-    if (localaddr == NULL || strlen(localaddr) == 0) {
-        localaddr = "";
-    } else {
-        has_local = true;
-    }
-
-    udp = backend->u.udp.data = g_new0(ChardevUdp, 1);
-    qemu_chr_parse_common(opts, qapi_ChardevUdp_base(udp));
-
-    addr = g_new0(SocketAddress, 1);
-    addr->type = SOCKET_ADDRESS_KIND_INET;
-    addr->u.inet.data = g_new(InetSocketAddress, 1);
-    *addr->u.inet.data = (InetSocketAddress) {
-        .host = g_strdup(host),
-        .port = g_strdup(port),
-        .has_ipv4 = qemu_opt_get(opts, "ipv4"),
-        .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
-        .has_ipv6 = qemu_opt_get(opts, "ipv6"),
-        .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
-    };
-    udp->remote = addr;
-
-    if (has_local) {
-        udp->has_local = true;
-        addr = g_new0(SocketAddress, 1);
-        addr->type = SOCKET_ADDRESS_KIND_INET;
-        addr->u.inet.data = g_new(InetSocketAddress, 1);
-        *addr->u.inet.data = (InetSocketAddress) {
-            .host = g_strdup(localaddr),
-            .port = g_strdup(localport),
-        };
-        udp->local = addr;
-    }
-}
-
 static const ChardevClass *char_get_class(const char *driver, Error **errp)
 {
     ObjectClass *oc;
@@ -2588,50 +2435,6 @@ static const TypeInfo char_serial_type_info = {
 };
 #endif
 
-static void qmp_chardev_open_udp(Chardev *chr,
-                                 ChardevBackend *backend,
-                                 bool *be_opened,
-                                 Error **errp)
-{
-    ChardevUdp *udp = backend->u.udp.data;
-    QIOChannelSocket *sioc = qio_channel_socket_new();
-    char *name;
-    UdpChardev *s = UDP_CHARDEV(chr);
-
-    if (qio_channel_socket_dgram_sync(sioc,
-                                      udp->local, udp->remote,
-                                      errp) < 0) {
-        object_unref(OBJECT(sioc));
-        return;
-    }
-
-    name = g_strdup_printf("chardev-udp-%s", chr->label);
-    qio_channel_set_name(QIO_CHANNEL(sioc), name);
-    g_free(name);
-
-    s->ioc = QIO_CHANNEL(sioc);
-    /* be isn't opened until we get a connection */
-    *be_opened = false;
-}
-
-static void char_udp_class_init(ObjectClass *oc, void *data)
-{
-    ChardevClass *cc = CHARDEV_CLASS(oc);
-
-    cc->parse = qemu_chr_parse_udp;
-    cc->open = qmp_chardev_open_udp;
-    cc->chr_write = udp_chr_write;
-    cc->chr_update_read_handler = udp_chr_update_read_handler;
-}
-
-static const TypeInfo char_udp_type_info = {
-    .name = TYPE_CHARDEV_UDP,
-    .parent = TYPE_CHARDEV,
-    .instance_size = sizeof(UdpChardev),
-    .instance_finalize = char_udp_finalize,
-    .class_init = char_udp_class_init,
-};
-
 bool qemu_chr_has_feature(Chardev *chr,
                           ChardevFeature feature)
 {
@@ -2733,7 +2536,6 @@ void qemu_chr_cleanup(void)
 static void register_types(void)
 {
     type_register_static(&char_type_info);
-    type_register_static(&char_udp_type_info);
     type_register_static(&char_file_type_info);
     type_register_static(&char_stdio_type_info);
 #ifdef HAVE_CHARDEV_SERIAL
diff --git a/chardev/Makefile.objs b/chardev/Makefile.objs
index c57c375d5b..dddef029e7 100644
--- a/chardev/Makefile.objs
+++ b/chardev/Makefile.objs
@@ -5,5 +5,6 @@ chardev-obj-y += char-mux.o
 chardev-obj-y += char-null.o
 chardev-obj-y += char-ringbuf.o
 chardev-obj-y += char-socket.o
+chardev-obj-y += char-udp.o
 chardev-obj-$(CONFIG_WIN32) += char-win.o
 chardev-obj-$(CONFIG_WIN32) += char-win-stdio.o
-- 
2.11.0

[Qemu-devel] [PATCH 33/40] char: move file chardev in its own file

[Marc-André Lureau]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 chardev/char-file.c   | 116 ++++++++++++++++++++++++++++++++++++++++++++++++++
 chardev/char.c        | 106 ---------------------------------------------
 chardev/Makefile.objs |   1 +
 3 files changed, 117 insertions(+), 106 deletions(-)
 create mode 100644 chardev/char-file.c

diff --git a/chardev/char-file.c b/chardev/char-file.c
new file mode 100644
index 0000000000..8be564c7df
--- /dev/null
+++ b/chardev/char-file.c
@@ -0,0 +1,116 @@
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "qemu-common.h"
+#include "sysemu/char.h"
+
+#ifdef _WIN32
+#include "char-win.h"
+#else
+#include "char-fd.h"
+#endif
+
+static void qmp_chardev_open_file(Chardev *chr,
+                                  ChardevBackend *backend,
+                                  bool *be_opened,
+                                  Error **errp)
+{
+    ChardevFile *file = backend->u.file.data;
+#ifdef _WIN32
+    HANDLE out;
+    DWORD accessmode;
+    DWORD flags;
+
+    if (file->has_in) {
+        error_setg(errp, "input file not supported");
+        return;
+    }
+
+    if (file->has_append && file->append) {
+        /* Append to file if it already exists. */
+        accessmode = FILE_GENERIC_WRITE & ~FILE_WRITE_DATA;
+        flags = OPEN_ALWAYS;
+    } else {
+        /* Truncate file if it already exists. */
+        accessmode = GENERIC_WRITE;
+        flags = CREATE_ALWAYS;
+    }
+
+    out = CreateFile(file->out, accessmode, FILE_SHARE_READ, NULL, flags,
+                     FILE_ATTRIBUTE_NORMAL, NULL);
+    if (out == INVALID_HANDLE_VALUE) {
+        error_setg(errp, "open %s failed", file->out);
+        return;
+    }
+
+    qemu_chr_open_win_file(chr, out);
+#else
+    int flags, in = -1, out;
+
+    flags = O_WRONLY | O_CREAT | O_BINARY;
+    if (file->has_append && file->append) {
+        flags |= O_APPEND;
+    } else {
+        flags |= O_TRUNC;
+    }
+
+    out = qmp_chardev_open_file_source(file->out, flags, errp);
+    if (out < 0) {
+        return;
+    }
+
+    if (file->has_in) {
+        flags = O_RDONLY;
+        in = qmp_chardev_open_file_source(file->in, flags, errp);
+        if (in < 0) {
+            qemu_close(out);
+            return;
+        }
+    }
+
+    qemu_chr_open_fd(chr, in, out);
+#endif
+}
+
+static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
+                                    Error **errp)
+{
+    const char *path = qemu_opt_get(opts, "path");
+    ChardevFile *file;
+
+    backend->type = CHARDEV_BACKEND_KIND_FILE;
+    if (path == NULL) {
+        error_setg(errp, "chardev: file: no filename given");
+        return;
+    }
+    file = backend->u.file.data = g_new0(ChardevFile, 1);
+    qemu_chr_parse_common(opts, qapi_ChardevFile_base(file));
+    file->out = g_strdup(path);
+
+    file->has_append = true;
+    file->append = qemu_opt_get_bool(opts, "append", false);
+}
+
+static void char_file_class_init(ObjectClass *oc, void *data)
+{
+    ChardevClass *cc = CHARDEV_CLASS(oc);
+
+    cc->parse = qemu_chr_parse_file_out;
+    cc->open = qmp_chardev_open_file;
+}
+
+static const TypeInfo char_file_type_info = {
+    .name = TYPE_CHARDEV_FILE,
+#ifdef _WIN32
+    .parent = TYPE_CHARDEV_WIN,
+#else
+    .parent = TYPE_CHARDEV_FD,
+#endif
+    .class_init = char_file_class_init,
+};
+
+static void register_types(void)
+{
+    type_register_static(&char_file_type_info);
+}
+
+type_init(register_types);
diff --git a/chardev/char.c b/chardev/char.c
index 2eb148714c..abf6ad820c 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -1687,26 +1687,6 @@ void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend)
     backend->logappend = qemu_opt_get_bool(opts, "logappend", false);
 }
 
-
-static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
-                                    Error **errp)
-{
-    const char *path = qemu_opt_get(opts, "path");
-    ChardevFile *file;
-
-    backend->type = CHARDEV_BACKEND_KIND_FILE;
-    if (path == NULL) {
-        error_setg(errp, "chardev: file: no filename given");
-        return;
-    }
-    file = backend->u.file.data = g_new0(ChardevFile, 1);
-    qemu_chr_parse_common(opts, qapi_ChardevFile_base(file));
-    file->out = g_strdup(path);
-
-    file->has_append = true;
-    file->append = qemu_opt_get_bool(opts, "append", false);
-}
-
 static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
                                  Error **errp)
 {
@@ -2238,41 +2218,6 @@ QemuOptsList qemu_chardev_opts = {
 
 #ifdef _WIN32
 
-static void qmp_chardev_open_file(Chardev *chr,
-                                  ChardevBackend *backend,
-                                  bool *be_opened,
-                                  Error **errp)
-{
-    ChardevFile *file = backend->u.file.data;
-    HANDLE out;
-    DWORD accessmode;
-    DWORD flags;
-
-    if (file->has_in) {
-        error_setg(errp, "input file not supported");
-        return;
-    }
-
-    if (file->has_append && file->append) {
-        /* Append to file if it already exists. */
-        accessmode = FILE_GENERIC_WRITE & ~FILE_WRITE_DATA;
-        flags = OPEN_ALWAYS;
-    } else {
-        /* Truncate file if it already exists. */
-        accessmode = GENERIC_WRITE;
-        flags = CREATE_ALWAYS;
-    }
-
-    out = CreateFile(file->out, accessmode, FILE_SHARE_READ, NULL, flags,
-                     FILE_ATTRIBUTE_NORMAL, NULL);
-    if (out == INVALID_HANDLE_VALUE) {
-        error_setg(errp, "open %s failed", file->out);
-        return;
-    }
-
-    qemu_chr_open_win_file(chr, out);
-}
-
 static void qmp_chardev_open_serial(Chardev *chr,
                                     ChardevBackend *backend,
                                     bool *be_opened,
@@ -2285,38 +2230,6 @@ static void qmp_chardev_open_serial(Chardev *chr,
 
 #else /* WIN32 */
 
-static void qmp_chardev_open_file(Chardev *chr,
-                                  ChardevBackend *backend,
-                                  bool *be_opened,
-                                  Error **errp)
-{
-    ChardevFile *file = backend->u.file.data;
-    int flags, in = -1, out;
-
-    flags = O_WRONLY | O_CREAT | O_BINARY;
-    if (file->has_append && file->append) {
-        flags |= O_APPEND;
-    } else {
-        flags |= O_TRUNC;
-    }
-
-    out = qmp_chardev_open_file_source(file->out, flags, errp);
-    if (out < 0) {
-        return;
-    }
-
-    if (file->has_in) {
-        flags = O_RDONLY;
-        in = qmp_chardev_open_file_source(file->in, flags, errp);
-        if (in < 0) {
-            qemu_close(out);
-            return;
-        }
-    }
-
-    qemu_chr_open_fd(chr, in, out);
-}
-
 #ifdef HAVE_CHARDEV_SERIAL
 static void qmp_chardev_open_serial(Chardev *chr,
                                     ChardevBackend *backend,
@@ -2393,24 +2306,6 @@ static const TypeInfo char_parallel_type_info = {
 
 #endif /* WIN32 */
 
-static void char_file_class_init(ObjectClass *oc, void *data)
-{
-    ChardevClass *cc = CHARDEV_CLASS(oc);
-
-    cc->parse = qemu_chr_parse_file_out;
-    cc->open = qmp_chardev_open_file;
-}
-
-static const TypeInfo char_file_type_info = {
-    .name = TYPE_CHARDEV_FILE,
-#ifdef _WIN32
-    .parent = TYPE_CHARDEV_WIN,
-#else
-    .parent = TYPE_CHARDEV_FD,
-#endif
-    .class_init = char_file_class_init,
-};
-
 #ifdef HAVE_CHARDEV_SERIAL
 
 static void char_serial_class_init(ObjectClass *oc, void *data)
@@ -2536,7 +2431,6 @@ void qemu_chr_cleanup(void)
 static void register_types(void)
 {
     type_register_static(&char_type_info);
-    type_register_static(&char_file_type_info);
     type_register_static(&char_stdio_type_info);
 #ifdef HAVE_CHARDEV_SERIAL
     type_register_static(&char_serial_type_info);
diff --git a/chardev/Makefile.objs b/chardev/Makefile.objs
index dddef029e7..0051a7a819 100644
--- a/chardev/Makefile.objs
+++ b/chardev/Makefile.objs
@@ -1,5 +1,6 @@
 chardev-obj-y += char.o
 chardev-obj-$(CONFIG_POSIX) += char-fd.o
+chardev-obj-y += char-file.o
 chardev-obj-y += char-io.o
 chardev-obj-y += char-mux.o
 chardev-obj-y += char-null.o
-- 
2.11.0

[Qemu-devel] [PATCH 34/40] char: move stdio in its own file

[Marc-André Lureau]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 chardev/char-stdio.c  | 141 ++++++++++++++++++++++++++++++++++++++++++++++++++
 chardev/char.c        | 120 ------------------------------------------
 chardev/Makefile.objs |   1 +
 3 files changed, 142 insertions(+), 120 deletions(-)
 create mode 100644 chardev/char-stdio.c

diff --git a/chardev/char-stdio.c b/chardev/char-stdio.c
new file mode 100644
index 0000000000..610fc65b0f
--- /dev/null
+++ b/chardev/char-stdio.c
@@ -0,0 +1,141 @@
+#include "qemu/osdep.h"
+#include "qemu/sockets.h"
+#include "qapi/error.h"
+#include "qemu-common.h"
+#include "sysemu/char.h"
+
+#ifdef _WIN32
+#include "char-win.h"
+#include "char-win-stdio.h"
+#else
+#include <termios.h>
+#include "char-fd.h"
+#endif
+
+#ifndef _WIN32
+/* init terminal so that we can grab keys */
+static struct termios oldtty;
+static int old_fd0_flags;
+static bool stdio_in_use;
+static bool stdio_allow_signal;
+static bool stdio_echo_state;
+
+static void term_exit(void)
+{
+    tcsetattr(0, TCSANOW, &oldtty);
+    fcntl(0, F_SETFL, old_fd0_flags);
+}
+
+static void qemu_chr_set_echo_stdio(Chardev *chr, bool echo)
+{
+    struct termios tty;
+
+    stdio_echo_state = echo;
+    tty = oldtty;
+    if (!echo) {
+        tty.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP
+                         | INLCR | IGNCR | ICRNL | IXON);
+        tty.c_oflag |= OPOST;
+        tty.c_lflag &= ~(ECHO | ECHONL | ICANON | IEXTEN);
+        tty.c_cflag &= ~(CSIZE | PARENB);
+        tty.c_cflag |= CS8;
+        tty.c_cc[VMIN] = 1;
+        tty.c_cc[VTIME] = 0;
+    }
+    if (!stdio_allow_signal) {
+        tty.c_lflag &= ~ISIG;
+    }
+
+    tcsetattr(0, TCSANOW, &tty);
+}
+
+static void term_stdio_handler(int sig)
+{
+    /* restore echo after resume from suspend. */
+    qemu_chr_set_echo_stdio(NULL, stdio_echo_state);
+}
+
+static void qemu_chr_open_stdio(Chardev *chr,
+                                ChardevBackend *backend,
+                                bool *be_opened,
+                                Error **errp)
+{
+    ChardevStdio *opts = backend->u.stdio.data;
+    struct sigaction act;
+
+    if (is_daemonized()) {
+        error_setg(errp, "cannot use stdio with -daemonize");
+        return;
+    }
+
+    if (stdio_in_use) {
+        error_setg(errp, "cannot use stdio by multiple character devices");
+        return;
+    }
+
+    stdio_in_use = true;
+    old_fd0_flags = fcntl(0, F_GETFL);
+    tcgetattr(0, &oldtty);
+    qemu_set_nonblock(0);
+    atexit(term_exit);
+
+    memset(&act, 0, sizeof(act));
+    act.sa_handler = term_stdio_handler;
+    sigaction(SIGCONT, &act, NULL);
+
+    qemu_chr_open_fd(chr, 0, 1);
+
+    if (opts->has_signal) {
+        stdio_allow_signal = opts->signal;
+    }
+    qemu_chr_set_echo_stdio(chr, false);
+}
+#endif
+
+static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
+                                 Error **errp)
+{
+    ChardevStdio *stdio;
+
+    backend->type = CHARDEV_BACKEND_KIND_STDIO;
+    stdio = backend->u.stdio.data = g_new0(ChardevStdio, 1);
+    qemu_chr_parse_common(opts, qapi_ChardevStdio_base(stdio));
+    stdio->has_signal = true;
+    stdio->signal = qemu_opt_get_bool(opts, "signal", true);
+}
+
+static void char_stdio_class_init(ObjectClass *oc, void *data)
+{
+    ChardevClass *cc = CHARDEV_CLASS(oc);
+
+    cc->parse = qemu_chr_parse_stdio;
+#ifndef _WIN32
+    cc->open = qemu_chr_open_stdio;
+    cc->chr_set_echo = qemu_chr_set_echo_stdio;
+#endif
+}
+
+static void char_stdio_finalize(Object *obj)
+{
+#ifndef _WIN32
+    term_exit();
+#endif
+}
+
+static const TypeInfo char_stdio_type_info = {
+    .name = TYPE_CHARDEV_STDIO,
+#ifdef _WIN32
+    .parent = TYPE_CHARDEV_WIN_STDIO,
+#else
+    .parent = TYPE_CHARDEV_FD,
+#endif
+    .instance_finalize = char_stdio_finalize,
+    .class_init = char_stdio_class_init,
+};
+
+static void register_types(void)
+{
+    type_register_static(&char_stdio_type_info);
+}
+
+type_init(register_types);
diff --git a/chardev/char.c b/chardev/char.c
index abf6ad820c..bd91826f8c 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -90,7 +90,6 @@
 #include "char-io.h"
 #ifdef _WIN32
 #include "char-win.h"
-#include "char-win-stdio.h"
 #endif
 
 /***********************************************************/
@@ -687,90 +686,6 @@ static void qemu_chr_open_pipe(Chardev *chr,
     qemu_chr_open_fd(chr, fd_in, fd_out);
 }
 
-/* init terminal so that we can grab keys */
-static struct termios oldtty;
-static int old_fd0_flags;
-static bool stdio_in_use;
-static bool stdio_allow_signal;
-static bool stdio_echo_state;
-
-static void qemu_chr_set_echo_stdio(Chardev *chr, bool echo);
-
-static void term_exit(void)
-{
-    tcsetattr (0, TCSANOW, &oldtty);
-    fcntl(0, F_SETFL, old_fd0_flags);
-}
-
-static void term_stdio_handler(int sig)
-{
-    /* restore echo after resume from suspend. */
-    qemu_chr_set_echo_stdio(NULL, stdio_echo_state);
-}
-
-static void qemu_chr_set_echo_stdio(Chardev *chr, bool echo)
-{
-    struct termios tty;
-
-    stdio_echo_state = echo;
-    tty = oldtty;
-    if (!echo) {
-        tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
-                          |INLCR|IGNCR|ICRNL|IXON);
-        tty.c_oflag |= OPOST;
-        tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
-        tty.c_cflag &= ~(CSIZE|PARENB);
-        tty.c_cflag |= CS8;
-        tty.c_cc[VMIN] = 1;
-        tty.c_cc[VTIME] = 0;
-    }
-    if (!stdio_allow_signal)
-        tty.c_lflag &= ~ISIG;
-
-    tcsetattr (0, TCSANOW, &tty);
-}
-
-static void char_stdio_finalize(Object *obj)
-{
-    term_exit();
-}
-
-static void qemu_chr_open_stdio(Chardev *chr,
-                                ChardevBackend *backend,
-                                bool *be_opened,
-                                Error **errp)
-{
-    ChardevStdio *opts = backend->u.stdio.data;
-    struct sigaction act;
-
-    if (is_daemonized()) {
-        error_setg(errp, "cannot use stdio with -daemonize");
-        return;
-    }
-
-    if (stdio_in_use) {
-        error_setg(errp, "cannot use stdio by multiple character devices");
-        return;
-    }
-
-    stdio_in_use = true;
-    old_fd0_flags = fcntl(0, F_GETFL);
-    tcgetattr(0, &oldtty);
-    qemu_set_nonblock(0);
-    atexit(term_exit);
-
-    memset(&act, 0, sizeof(act));
-    act.sa_handler = term_stdio_handler;
-    sigaction(SIGCONT, &act, NULL);
-
-    qemu_chr_open_fd(chr, 0, 1);
-
-    if (opts->has_signal) {
-        stdio_allow_signal = opts->signal;
-    }
-    qemu_chr_set_echo_stdio(chr, false);
-}
-
 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
     || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
     || defined(__GLIBC__)
@@ -1687,40 +1602,6 @@ void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend)
     backend->logappend = qemu_opt_get_bool(opts, "logappend", false);
 }
 
-static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
-                                 Error **errp)
-{
-    ChardevStdio *stdio;
-
-    backend->type = CHARDEV_BACKEND_KIND_STDIO;
-    stdio = backend->u.stdio.data = g_new0(ChardevStdio, 1);
-    qemu_chr_parse_common(opts, qapi_ChardevStdio_base(stdio));
-    stdio->has_signal = true;
-    stdio->signal = qemu_opt_get_bool(opts, "signal", true);
-}
-
-static void char_stdio_class_init(ObjectClass *oc, void *data)
-{
-    ChardevClass *cc = CHARDEV_CLASS(oc);
-
-    cc->parse = qemu_chr_parse_stdio;
-#ifndef _WIN32
-    cc->open = qemu_chr_open_stdio;
-    cc->chr_set_echo = qemu_chr_set_echo_stdio;
-#endif
-}
-
-static const TypeInfo char_stdio_type_info = {
-    .name = TYPE_CHARDEV_STDIO,
-#ifdef _WIN32
-    .parent = TYPE_CHARDEV_WIN_STDIO,
-#else
-    .parent = TYPE_CHARDEV_FD,
-    .instance_finalize = char_stdio_finalize,
-#endif
-    .class_init = char_stdio_class_init,
-};
-
 #ifdef HAVE_CHARDEV_SERIAL
 static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
                                   Error **errp)
@@ -2431,7 +2312,6 @@ void qemu_chr_cleanup(void)
 static void register_types(void)
 {
     type_register_static(&char_type_info);
-    type_register_static(&char_stdio_type_info);
 #ifdef HAVE_CHARDEV_SERIAL
     type_register_static(&char_serial_type_info);
 #endif
diff --git a/chardev/Makefile.objs b/chardev/Makefile.objs
index 0051a7a819..ee40e8a1d7 100644
--- a/chardev/Makefile.objs
+++ b/chardev/Makefile.objs
@@ -6,6 +6,7 @@ chardev-obj-y += char-mux.o
 chardev-obj-y += char-null.o
 chardev-obj-y += char-ringbuf.o
 chardev-obj-y += char-socket.o
+chardev-obj-y += char-stdio.o
 chardev-obj-y += char-udp.o
 chardev-obj-$(CONFIG_WIN32) += char-win.o
 chardev-obj-$(CONFIG_WIN32) += char-win-stdio.o
-- 
2.11.0

[Qemu-devel] [PATCH 35/40] char: move console in its own file

[Marc-André Lureau]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 chardev/char-console.c | 30 ++++++++++++++++++++++++++++++
 chardev/char.c         |  3 ---
 chardev/Makefile.objs  |  1 +
 3 files changed, 31 insertions(+), 3 deletions(-)
 create mode 100644 chardev/char-console.c

diff --git a/chardev/char-console.c b/chardev/char-console.c
new file mode 100644
index 0000000000..6cc8336622
--- /dev/null
+++ b/chardev/char-console.c
@@ -0,0 +1,30 @@
+#include "qemu/osdep.h"
+#include "char-win.h"
+
+static void qemu_chr_open_win_con(Chardev *chr,
+                                  ChardevBackend *backend,
+                                  bool *be_opened,
+                                  Error **errp)
+{
+    qemu_chr_open_win_file(chr, GetStdHandle(STD_OUTPUT_HANDLE));
+}
+
+static void char_console_class_init(ObjectClass *oc, void *data)
+{
+    ChardevClass *cc = CHARDEV_CLASS(oc);
+
+    cc->open = qemu_chr_open_win_con;
+}
+
+static const TypeInfo char_console_type_info = {
+    .name = TYPE_CHARDEV_CONSOLE,
+    .parent = TYPE_CHARDEV_WIN,
+    .class_init = char_console_class_init,
+};
+
+static void register_types(void)
+{
+    type_register_static(&char_console_type_info);
+}
+
+type_init(register_types);
diff --git a/chardev/char.c b/chardev/char.c
index bd91826f8c..a11cec378d 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -2321,9 +2321,6 @@ static void register_types(void)
 #ifdef HAVE_CHARDEV_PTY
     type_register_static(&char_pty_type_info);
 #endif
-#ifdef _WIN32
-    type_register_static(&char_console_type_info);
-#endif
     type_register_static(&char_pipe_type_info);
 
     /* this must be done after machine init, since we register FEs with muxes
diff --git a/chardev/Makefile.objs b/chardev/Makefile.objs
index ee40e8a1d7..265a6dad5d 100644
--- a/chardev/Makefile.objs
+++ b/chardev/Makefile.objs
@@ -1,4 +1,5 @@
 chardev-obj-y += char.o
+chardev-obj-$(CONFIG_WIN32) += char-console.o
 chardev-obj-$(CONFIG_POSIX) += char-fd.o
 chardev-obj-y += char-file.o
 chardev-obj-y += char-io.o
-- 
2.11.0

[Qemu-devel] [PATCH 36/40] char: move pipe chardev in its own file

[Marc-André Lureau]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 chardev/char-pipe.c   | 168 ++++++++++++++++++++++++++++++++++++++++++++++++++
 chardev/char.c        | 166 -------------------------------------------------
 chardev/Makefile.objs |   1 +
 3 files changed, 169 insertions(+), 166 deletions(-)
 create mode 100644 chardev/char-pipe.c

diff --git a/chardev/char-pipe.c b/chardev/char-pipe.c
new file mode 100644
index 0000000000..3c8ef350a1
--- /dev/null
+++ b/chardev/char-pipe.c
@@ -0,0 +1,168 @@
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "sysemu/char.h"
+
+#ifdef _WIN32
+#include "char-win.h"
+#else
+#include "char-fd.h"
+#endif
+
+#ifdef _WIN32
+#define MAXCONNECT 1
+#define NTIMEOUT 5000
+
+static int win_chr_pipe_init(Chardev *chr, const char *filename,
+                             Error **errp)
+{
+    WinChardev *s = WIN_CHARDEV(chr);
+    OVERLAPPED ov;
+    int ret;
+    DWORD size;
+    char *openname;
+
+    s->fpipe = TRUE;
+
+    s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
+    if (!s->hsend) {
+        error_setg(errp, "Failed CreateEvent");
+        goto fail;
+    }
+    s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
+    if (!s->hrecv) {
+        error_setg(errp, "Failed CreateEvent");
+        goto fail;
+    }
+
+    openname = g_strdup_printf("\\\\.\\pipe\\%s", filename);
+    s->hcom = CreateNamedPipe(openname,
+                              PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
+                              PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
+                              PIPE_WAIT,
+                              MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
+    g_free(openname);
+    if (s->hcom == INVALID_HANDLE_VALUE) {
+        error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError());
+        s->hcom = NULL;
+        goto fail;
+    }
+
+    ZeroMemory(&ov, sizeof(ov));
+    ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
+    ret = ConnectNamedPipe(s->hcom, &ov);
+    if (ret) {
+        error_setg(errp, "Failed ConnectNamedPipe");
+        goto fail;
+    }
+
+    ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
+    if (!ret) {
+        error_setg(errp, "Failed GetOverlappedResult");
+        if (ov.hEvent) {
+            CloseHandle(ov.hEvent);
+            ov.hEvent = NULL;
+        }
+        goto fail;
+    }
+
+    if (ov.hEvent) {
+        CloseHandle(ov.hEvent);
+        ov.hEvent = NULL;
+    }
+    qemu_add_polling_cb(win_chr_pipe_poll, chr);
+    return 0;
+
+ fail:
+    return -1;
+}
+
+static void qemu_chr_open_pipe(Chardev *chr,
+                               ChardevBackend *backend,
+                               bool *be_opened,
+                               Error **errp)
+{
+    ChardevHostdev *opts = backend->u.pipe.data;
+    const char *filename = opts->device;
+
+    if (win_chr_pipe_init(chr, filename, errp) < 0) {
+        return;
+    }
+}
+
+#else
+
+static void qemu_chr_open_pipe(Chardev *chr,
+                               ChardevBackend *backend,
+                               bool *be_opened,
+                               Error **errp)
+{
+    ChardevHostdev *opts = backend->u.pipe.data;
+    int fd_in, fd_out;
+    char *filename_in;
+    char *filename_out;
+    const char *filename = opts->device;
+
+    filename_in = g_strdup_printf("%s.in", filename);
+    filename_out = g_strdup_printf("%s.out", filename);
+    TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
+    TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
+    g_free(filename_in);
+    g_free(filename_out);
+    if (fd_in < 0 || fd_out < 0) {
+        if (fd_in >= 0) {
+            close(fd_in);
+        }
+        if (fd_out >= 0) {
+            close(fd_out);
+        }
+        TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
+        if (fd_in < 0) {
+            error_setg_file_open(errp, errno, filename);
+            return;
+        }
+    }
+    qemu_chr_open_fd(chr, fd_in, fd_out);
+}
+
+#endif /* !_WIN32 */
+
+static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
+                                Error **errp)
+{
+    const char *device = qemu_opt_get(opts, "path");
+    ChardevHostdev *dev;
+
+    if (device == NULL) {
+        error_setg(errp, "chardev: pipe: no device path given");
+        return;
+    }
+    backend->type = CHARDEV_BACKEND_KIND_PIPE;
+    dev = backend->u.pipe.data = g_new0(ChardevHostdev, 1);
+    qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(dev));
+    dev->device = g_strdup(device);
+}
+
+static void char_pipe_class_init(ObjectClass *oc, void *data)
+{
+    ChardevClass *cc = CHARDEV_CLASS(oc);
+
+    cc->parse = qemu_chr_parse_pipe;
+    cc->open = qemu_chr_open_pipe;
+}
+
+static const TypeInfo char_pipe_type_info = {
+    .name = TYPE_CHARDEV_PIPE,
+#ifdef _WIN32
+    .parent = TYPE_CHARDEV_WIN,
+#else
+    .parent = TYPE_CHARDEV_FD,
+#endif
+    .class_init = char_pipe_class_init,
+};
+
+static void register_types(void)
+{
+    type_register_static(&char_pipe_type_info);
+}
+
+type_init(register_types);
diff --git a/chardev/char.c b/chardev/char.c
index a11cec378d..f8e54d9c4b 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -655,36 +655,6 @@ void qemu_chr_fe_take_focus(CharBackend *b)
 }
 
 #ifndef _WIN32
-static void qemu_chr_open_pipe(Chardev *chr,
-                               ChardevBackend *backend,
-                               bool *be_opened,
-                               Error **errp)
-{
-    ChardevHostdev *opts = backend->u.pipe.data;
-    int fd_in, fd_out;
-    char *filename_in;
-    char *filename_out;
-    const char *filename = opts->device;
-
-    filename_in = g_strdup_printf("%s.in", filename);
-    filename_out = g_strdup_printf("%s.out", filename);
-    TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
-    TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
-    g_free(filename_in);
-    g_free(filename_out);
-    if (fd_in < 0 || fd_out < 0) {
-	if (fd_in >= 0)
-	    close(fd_in);
-	if (fd_out >= 0)
-	    close(fd_out);
-        TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
-        if (fd_in < 0) {
-            error_setg_file_open(errp, errno, filename);
-            return;
-        }
-    }
-    qemu_chr_open_fd(chr, fd_in, fd_out);
-}
 
 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
     || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
@@ -1325,107 +1295,6 @@ static void qemu_chr_open_pp_fd(Chardev *chr,
 
 #define HAVE_CHARDEV_SERIAL 1
 
-#define MAXCONNECT 1
-#define NTIMEOUT 5000
-
-static int win_chr_pipe_init(Chardev *chr, const char *filename,
-                             Error **errp)
-{
-    WinChardev *s = WIN_CHARDEV(chr);
-    OVERLAPPED ov;
-    int ret;
-    DWORD size;
-    char *openname;
-
-    s->fpipe = TRUE;
-
-    s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
-    if (!s->hsend) {
-        error_setg(errp, "Failed CreateEvent");
-        goto fail;
-    }
-    s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
-    if (!s->hrecv) {
-        error_setg(errp, "Failed CreateEvent");
-        goto fail;
-    }
-
-    openname = g_strdup_printf("\\\\.\\pipe\\%s", filename);
-    s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
-                              PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
-                              PIPE_WAIT,
-                              MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
-    g_free(openname);
-    if (s->hcom == INVALID_HANDLE_VALUE) {
-        error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError());
-        s->hcom = NULL;
-        goto fail;
-    }
-
-    ZeroMemory(&ov, sizeof(ov));
-    ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
-    ret = ConnectNamedPipe(s->hcom, &ov);
-    if (ret) {
-        error_setg(errp, "Failed ConnectNamedPipe");
-        goto fail;
-    }
-
-    ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
-    if (!ret) {
-        error_setg(errp, "Failed GetOverlappedResult");
-        if (ov.hEvent) {
-            CloseHandle(ov.hEvent);
-            ov.hEvent = NULL;
-        }
-        goto fail;
-    }
-
-    if (ov.hEvent) {
-        CloseHandle(ov.hEvent);
-        ov.hEvent = NULL;
-    }
-    qemu_add_polling_cb(win_chr_pipe_poll, chr);
-    return 0;
-
- fail:
-    return -1;
-}
-
-
-static void qemu_chr_open_pipe(Chardev *chr,
-                               ChardevBackend *backend,
-                               bool *be_opened,
-                               Error **errp)
-{
-    ChardevHostdev *opts = backend->u.pipe.data;
-    const char *filename = opts->device;
-
-    if (win_chr_pipe_init(chr, filename, errp) < 0) {
-        return;
-    }
-}
-
-static void qemu_chr_open_win_con(Chardev *chr,
-                                  ChardevBackend *backend,
-                                  bool *be_opened,
-                                  Error **errp)
-{
-    qemu_chr_open_win_file(chr, GetStdHandle(STD_OUTPUT_HANDLE));
-}
-
-static void char_console_class_init(ObjectClass *oc, void *data)
-{
-    ChardevClass *cc = CHARDEV_CLASS(oc);
-
-    cc->open = qemu_chr_open_win_con;
-}
-
-static const TypeInfo char_console_type_info = {
-    .name = TYPE_CHARDEV_CONSOLE,
-    .parent = TYPE_CHARDEV_WIN,
-    .class_init = char_console_class_init,
-};
-
 #endif /* !_WIN32 */
 
 int qemu_chr_wait_connected(Chardev *chr, Error **errp)
@@ -1638,40 +1507,6 @@ static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
 }
 #endif
 
-static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
-                                Error **errp)
-{
-    const char *device = qemu_opt_get(opts, "path");
-    ChardevHostdev *dev;
-
-    backend->type = CHARDEV_BACKEND_KIND_PIPE;
-    if (device == NULL) {
-        error_setg(errp, "chardev: pipe: no device path given");
-        return;
-    }
-    dev = backend->u.pipe.data = g_new0(ChardevHostdev, 1);
-    qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(dev));
-    dev->device = g_strdup(device);
-}
-
-static void char_pipe_class_init(ObjectClass *oc, void *data)
-{
-    ChardevClass *cc = CHARDEV_CLASS(oc);
-
-    cc->parse = qemu_chr_parse_pipe;
-    cc->open = qemu_chr_open_pipe;
-}
-
-static const TypeInfo char_pipe_type_info = {
-    .name = TYPE_CHARDEV_PIPE,
-#ifdef _WIN32
-    .parent = TYPE_CHARDEV_WIN,
-#else
-    .parent = TYPE_CHARDEV_FD,
-#endif
-    .class_init = char_pipe_class_init,
-};
-
 static const ChardevClass *char_get_class(const char *driver, Error **errp)
 {
     ObjectClass *oc;
@@ -2321,7 +2156,6 @@ static void register_types(void)
 #ifdef HAVE_CHARDEV_PTY
     type_register_static(&char_pty_type_info);
 #endif
-    type_register_static(&char_pipe_type_info);
 
     /* this must be done after machine init, since we register FEs with muxes
      * as part of realize functions like serial_isa_realizefn when -nographic
diff --git a/chardev/Makefile.objs b/chardev/Makefile.objs
index 265a6dad5d..778b312377 100644
--- a/chardev/Makefile.objs
+++ b/chardev/Makefile.objs
@@ -5,6 +5,7 @@ chardev-obj-y += char-file.o
 chardev-obj-y += char-io.o
 chardev-obj-y += char-mux.o
 chardev-obj-y += char-null.o
+chardev-obj-y += char-pipe.o
 chardev-obj-y += char-ringbuf.o
 chardev-obj-y += char-socket.o
 chardev-obj-y += char-stdio.o
-- 
2.11.0

[Qemu-devel] [PATCH 37/40] char: move pty chardev in its own file

[Marc-André Lureau]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 chardev/char-pty.c    | 277 ++++++++++++++++++++++++++++++++++++++++++++++++++
 chardev/char.c        | 258 ----------------------------------------------
 chardev/Makefile.objs |   1 +
 3 files changed, 278 insertions(+), 258 deletions(-)
 create mode 100644 chardev/char-pty.c

diff --git a/chardev/char-pty.c b/chardev/char-pty.c
new file mode 100644
index 0000000000..bd9fdfa60d
--- /dev/null
+++ b/chardev/char-pty.c
@@ -0,0 +1,277 @@
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "qemu-common.h"
+#include "sysemu/char.h"
+#include "io/channel-file.h"
+#include "qemu/sockets.h"
+#include "qemu/error-report.h"
+
+#include "char-io.h"
+
+#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__)      \
+    || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
+    || defined(__GLIBC__)
+
+typedef struct {
+    Chardev parent;
+    QIOChannel *ioc;
+    int read_bytes;
+
+    /* Protected by the Chardev chr_write_lock.  */
+    int connected;
+    guint timer_tag;
+    guint open_tag;
+} PtyChardev;
+
+#define PTY_CHARDEV(obj) OBJECT_CHECK(PtyChardev, (obj), TYPE_CHARDEV_PTY)
+
+static void pty_chr_update_read_handler_locked(Chardev *chr);
+static void pty_chr_state(Chardev *chr, int connected);
+
+static gboolean pty_chr_timer(gpointer opaque)
+{
+    struct Chardev *chr = CHARDEV(opaque);
+    PtyChardev *s = PTY_CHARDEV(opaque);
+
+    qemu_mutex_lock(&chr->chr_write_lock);
+    s->timer_tag = 0;
+    s->open_tag = 0;
+    if (!s->connected) {
+        /* Next poll ... */
+        pty_chr_update_read_handler_locked(chr);
+    }
+    qemu_mutex_unlock(&chr->chr_write_lock);
+    return FALSE;
+}
+
+/* Called with chr_write_lock held.  */
+static void pty_chr_rearm_timer(Chardev *chr, int ms)
+{
+    PtyChardev *s = PTY_CHARDEV(chr);
+    char *name;
+
+    if (s->timer_tag) {
+        g_source_remove(s->timer_tag);
+        s->timer_tag = 0;
+    }
+
+    if (ms == 1000) {
+        name = g_strdup_printf("pty-timer-secs-%s", chr->label);
+        s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
+    } else {
+        name = g_strdup_printf("pty-timer-ms-%s", chr->label);
+        s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
+    }
+    g_source_set_name_by_id(s->timer_tag, name);
+    g_free(name);
+}
+
+/* Called with chr_write_lock held.  */
+static void pty_chr_update_read_handler_locked(Chardev *chr)
+{
+    PtyChardev *s = PTY_CHARDEV(chr);
+    GPollFD pfd;
+    int rc;
+    QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc);
+
+    pfd.fd = fioc->fd;
+    pfd.events = G_IO_OUT;
+    pfd.revents = 0;
+    do {
+        rc = g_poll(&pfd, 1, 0);
+    } while (rc == -1 && errno == EINTR);
+    assert(rc >= 0);
+
+    if (pfd.revents & G_IO_HUP) {
+        pty_chr_state(chr, 0);
+    } else {
+        pty_chr_state(chr, 1);
+    }
+}
+
+static void pty_chr_update_read_handler(Chardev *chr,
+                                        GMainContext *context)
+{
+    qemu_mutex_lock(&chr->chr_write_lock);
+    pty_chr_update_read_handler_locked(chr);
+    qemu_mutex_unlock(&chr->chr_write_lock);
+}
+
+/* Called with chr_write_lock held.  */
+static int char_pty_chr_write(Chardev *chr, const uint8_t *buf, int len)
+{
+    PtyChardev *s = PTY_CHARDEV(chr);
+
+    if (!s->connected) {
+        /* guest sends data, check for (re-)connect */
+        pty_chr_update_read_handler_locked(chr);
+        if (!s->connected) {
+            return 0;
+        }
+    }
+    return io_channel_send(s->ioc, buf, len);
+}
+
+static GSource *pty_chr_add_watch(Chardev *chr, GIOCondition cond)
+{
+    PtyChardev *s = PTY_CHARDEV(chr);
+    if (!s->connected) {
+        return NULL;
+    }
+    return qio_channel_create_watch(s->ioc, cond);
+}
+
+static int pty_chr_read_poll(void *opaque)
+{
+    Chardev *chr = CHARDEV(opaque);
+    PtyChardev *s = PTY_CHARDEV(opaque);
+
+    s->read_bytes = qemu_chr_be_can_write(chr);
+    return s->read_bytes;
+}
+
+static gboolean pty_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
+{
+    Chardev *chr = CHARDEV(opaque);
+    PtyChardev *s = PTY_CHARDEV(opaque);
+    gsize len;
+    uint8_t buf[CHR_READ_BUF_LEN];
+    ssize_t ret;
+
+    len = sizeof(buf);
+    if (len > s->read_bytes) {
+        len = s->read_bytes;
+    }
+    if (len == 0) {
+        return TRUE;
+    }
+    ret = qio_channel_read(s->ioc, (char *)buf, len, NULL);
+    if (ret <= 0) {
+        pty_chr_state(chr, 0);
+        return FALSE;
+    } else {
+        pty_chr_state(chr, 1);
+        qemu_chr_be_write(chr, buf, ret);
+    }
+    return TRUE;
+}
+
+static gboolean qemu_chr_be_generic_open_func(gpointer opaque)
+{
+    Chardev *chr = CHARDEV(opaque);
+    PtyChardev *s = PTY_CHARDEV(opaque);
+
+    s->open_tag = 0;
+    qemu_chr_be_generic_open(chr);
+    return FALSE;
+}
+
+/* Called with chr_write_lock held.  */
+static void pty_chr_state(Chardev *chr, int connected)
+{
+    PtyChardev *s = PTY_CHARDEV(chr);
+
+    if (!connected) {
+        if (s->open_tag) {
+            g_source_remove(s->open_tag);
+            s->open_tag = 0;
+        }
+        remove_fd_in_watch(chr);
+        s->connected = 0;
+        /* (re-)connect poll interval for idle guests: once per second.
+         * We check more frequently in case the guests sends data to
+         * the virtual device linked to our pty. */
+        pty_chr_rearm_timer(chr, 1000);
+    } else {
+        if (s->timer_tag) {
+            g_source_remove(s->timer_tag);
+            s->timer_tag = 0;
+        }
+        if (!s->connected) {
+            g_assert(s->open_tag == 0);
+            s->connected = 1;
+            s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr);
+        }
+        if (!chr->fd_in_tag) {
+            chr->fd_in_tag = io_add_watch_poll(chr, s->ioc,
+                                               pty_chr_read_poll,
+                                               pty_chr_read,
+                                               chr, NULL);
+        }
+    }
+}
+
+static void char_pty_finalize(Object *obj)
+{
+    Chardev *chr = CHARDEV(obj);
+    PtyChardev *s = PTY_CHARDEV(obj);
+
+    qemu_mutex_lock(&chr->chr_write_lock);
+    pty_chr_state(chr, 0);
+    object_unref(OBJECT(s->ioc));
+    if (s->timer_tag) {
+        g_source_remove(s->timer_tag);
+        s->timer_tag = 0;
+    }
+    qemu_mutex_unlock(&chr->chr_write_lock);
+    qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
+}
+
+static void char_pty_open(Chardev *chr,
+                          ChardevBackend *backend,
+                          bool *be_opened,
+                          Error **errp)
+{
+    PtyChardev *s;
+    int master_fd, slave_fd;
+    char pty_name[PATH_MAX];
+    char *name;
+
+    master_fd = qemu_openpty_raw(&slave_fd, pty_name);
+    if (master_fd < 0) {
+        error_setg_errno(errp, errno, "Failed to create PTY");
+        return;
+    }
+
+    close(slave_fd);
+    qemu_set_nonblock(master_fd);
+
+    chr->filename = g_strdup_printf("pty:%s", pty_name);
+    error_report("char device redirected to %s (label %s)",
+                 pty_name, chr->label);
+
+    s = PTY_CHARDEV(chr);
+    s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd));
+    name = g_strdup_printf("chardev-pty-%s", chr->label);
+    qio_channel_set_name(QIO_CHANNEL(s->ioc), name);
+    g_free(name);
+    s->timer_tag = 0;
+    *be_opened = false;
+}
+
+static void char_pty_class_init(ObjectClass *oc, void *data)
+{
+    ChardevClass *cc = CHARDEV_CLASS(oc);
+
+    cc->open = char_pty_open;
+    cc->chr_write = char_pty_chr_write;
+    cc->chr_update_read_handler = pty_chr_update_read_handler;
+    cc->chr_add_watch = pty_chr_add_watch;
+}
+
+static const TypeInfo char_pty_type_info = {
+    .name = TYPE_CHARDEV_PTY,
+    .parent = TYPE_CHARDEV,
+    .instance_size = sizeof(PtyChardev),
+    .instance_finalize = char_pty_finalize,
+    .class_init = char_pty_class_init,
+};
+
+static void register_types(void)
+{
+    type_register_static(&char_pty_type_info);
+}
+
+type_init(register_types);
+
+#endif
diff --git a/chardev/char.c b/chardev/char.c
index f8e54d9c4b..ac29fcc841 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -661,261 +661,6 @@ void qemu_chr_fe_take_focus(CharBackend *b)
     || defined(__GLIBC__)
 
 #define HAVE_CHARDEV_SERIAL 1
-#define HAVE_CHARDEV_PTY 1
-
-typedef struct {
-    Chardev parent;
-    QIOChannel *ioc;
-    int read_bytes;
-
-    /* Protected by the Chardev chr_write_lock.  */
-    int connected;
-    guint timer_tag;
-    guint open_tag;
-} PtyChardev;
-
-#define PTY_CHARDEV(obj) OBJECT_CHECK(PtyChardev, (obj), TYPE_CHARDEV_PTY)
-
-static void pty_chr_update_read_handler_locked(Chardev *chr);
-static void pty_chr_state(Chardev *chr, int connected);
-
-static gboolean pty_chr_timer(gpointer opaque)
-{
-    struct Chardev *chr = CHARDEV(opaque);
-    PtyChardev *s = PTY_CHARDEV(opaque);
-
-    qemu_mutex_lock(&chr->chr_write_lock);
-    s->timer_tag = 0;
-    s->open_tag = 0;
-    if (!s->connected) {
-        /* Next poll ... */
-        pty_chr_update_read_handler_locked(chr);
-    }
-    qemu_mutex_unlock(&chr->chr_write_lock);
-    return FALSE;
-}
-
-/* Called with chr_write_lock held.  */
-static void pty_chr_rearm_timer(Chardev *chr, int ms)
-{
-    PtyChardev *s = PTY_CHARDEV(chr);
-    char *name;
-
-    if (s->timer_tag) {
-        g_source_remove(s->timer_tag);
-        s->timer_tag = 0;
-    }
-
-    if (ms == 1000) {
-        name = g_strdup_printf("pty-timer-secs-%s", chr->label);
-        s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
-    } else {
-        name = g_strdup_printf("pty-timer-ms-%s", chr->label);
-        s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
-    }
-    g_source_set_name_by_id(s->timer_tag, name);
-    g_free(name);
-}
-
-/* Called with chr_write_lock held.  */
-static void pty_chr_update_read_handler_locked(Chardev *chr)
-{
-    PtyChardev *s = PTY_CHARDEV(chr);
-    GPollFD pfd;
-    int rc;
-    QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc);
-
-    pfd.fd = fioc->fd;
-    pfd.events = G_IO_OUT;
-    pfd.revents = 0;
-    do {
-        rc = g_poll(&pfd, 1, 0);
-    } while (rc == -1 && errno == EINTR);
-    assert(rc >= 0);
-
-    if (pfd.revents & G_IO_HUP) {
-        pty_chr_state(chr, 0);
-    } else {
-        pty_chr_state(chr, 1);
-    }
-}
-
-static void pty_chr_update_read_handler(Chardev *chr,
-                                        GMainContext *context)
-{
-    qemu_mutex_lock(&chr->chr_write_lock);
-    pty_chr_update_read_handler_locked(chr);
-    qemu_mutex_unlock(&chr->chr_write_lock);
-}
-
-/* Called with chr_write_lock held.  */
-static int char_pty_chr_write(Chardev *chr, const uint8_t *buf, int len)
-{
-    PtyChardev *s = PTY_CHARDEV(chr);
-
-    if (!s->connected) {
-        /* guest sends data, check for (re-)connect */
-        pty_chr_update_read_handler_locked(chr);
-        if (!s->connected) {
-            return 0;
-        }
-    }
-    return io_channel_send(s->ioc, buf, len);
-}
-
-static GSource *pty_chr_add_watch(Chardev *chr, GIOCondition cond)
-{
-    PtyChardev *s = PTY_CHARDEV(chr);
-    if (!s->connected) {
-        return NULL;
-    }
-    return qio_channel_create_watch(s->ioc, cond);
-}
-
-static int pty_chr_read_poll(void *opaque)
-{
-    Chardev *chr = CHARDEV(opaque);
-    PtyChardev *s = PTY_CHARDEV(opaque);
-
-    s->read_bytes = qemu_chr_be_can_write(chr);
-    return s->read_bytes;
-}
-
-static gboolean pty_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
-{
-    Chardev *chr = CHARDEV(opaque);
-    PtyChardev *s = PTY_CHARDEV(opaque);
-    gsize len;
-    uint8_t buf[CHR_READ_BUF_LEN];
-    ssize_t ret;
-
-    len = sizeof(buf);
-    if (len > s->read_bytes)
-        len = s->read_bytes;
-    if (len == 0) {
-        return TRUE;
-    }
-    ret = qio_channel_read(s->ioc, (char *)buf, len, NULL);
-    if (ret <= 0) {
-        pty_chr_state(chr, 0);
-        return FALSE;
-    } else {
-        pty_chr_state(chr, 1);
-        qemu_chr_be_write(chr, buf, ret);
-    }
-    return TRUE;
-}
-
-static gboolean qemu_chr_be_generic_open_func(gpointer opaque)
-{
-    Chardev *chr = CHARDEV(opaque);
-    PtyChardev *s = PTY_CHARDEV(opaque);
-
-    s->open_tag = 0;
-    qemu_chr_be_generic_open(chr);
-    return FALSE;
-}
-
-/* Called with chr_write_lock held.  */
-static void pty_chr_state(Chardev *chr, int connected)
-{
-    PtyChardev *s = PTY_CHARDEV(chr);
-
-    if (!connected) {
-        if (s->open_tag) {
-            g_source_remove(s->open_tag);
-            s->open_tag = 0;
-        }
-        remove_fd_in_watch(chr);
-        s->connected = 0;
-        /* (re-)connect poll interval for idle guests: once per second.
-         * We check more frequently in case the guests sends data to
-         * the virtual device linked to our pty. */
-        pty_chr_rearm_timer(chr, 1000);
-    } else {
-        if (s->timer_tag) {
-            g_source_remove(s->timer_tag);
-            s->timer_tag = 0;
-        }
-        if (!s->connected) {
-            g_assert(s->open_tag == 0);
-            s->connected = 1;
-            s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr);
-        }
-        if (!chr->fd_in_tag) {
-            chr->fd_in_tag = io_add_watch_poll(chr, s->ioc,
-                                               pty_chr_read_poll,
-                                               pty_chr_read,
-                                               chr, NULL);
-        }
-    }
-}
-
-static void char_pty_finalize(Object *obj)
-{
-    Chardev *chr = CHARDEV(obj);
-    PtyChardev *s = PTY_CHARDEV(obj);
-
-    qemu_mutex_lock(&chr->chr_write_lock);
-    pty_chr_state(chr, 0);
-    object_unref(OBJECT(s->ioc));
-    if (s->timer_tag) {
-        g_source_remove(s->timer_tag);
-        s->timer_tag = 0;
-    }
-    qemu_mutex_unlock(&chr->chr_write_lock);
-    qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
-}
-
-static void char_pty_open(Chardev *chr,
-                          ChardevBackend *backend,
-                          bool *be_opened,
-                          Error **errp)
-{
-    PtyChardev *s;
-    int master_fd, slave_fd;
-    char pty_name[PATH_MAX];
-    char *name;
-
-    master_fd = qemu_openpty_raw(&slave_fd, pty_name);
-    if (master_fd < 0) {
-        error_setg_errno(errp, errno, "Failed to create PTY");
-        return;
-    }
-
-    close(slave_fd);
-    qemu_set_nonblock(master_fd);
-
-    chr->filename = g_strdup_printf("pty:%s", pty_name);
-    error_report("char device redirected to %s (label %s)",
-                 pty_name, chr->label);
-
-    s = PTY_CHARDEV(chr);
-    s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd));
-    name = g_strdup_printf("chardev-pty-%s", chr->label);
-    qio_channel_set_name(QIO_CHANNEL(s->ioc), name);
-    g_free(name);
-    s->timer_tag = 0;
-    *be_opened = false;
-}
-
-static void char_pty_class_init(ObjectClass *oc, void *data)
-{
-    ChardevClass *cc = CHARDEV_CLASS(oc);
-
-    cc->open = char_pty_open;
-    cc->chr_write = char_pty_chr_write;
-    cc->chr_update_read_handler = pty_chr_update_read_handler;
-    cc->chr_add_watch = pty_chr_add_watch;
-}
-
-static const TypeInfo char_pty_type_info = {
-    .name = TYPE_CHARDEV_PTY,
-    .parent = TYPE_CHARDEV,
-    .instance_size = sizeof(PtyChardev),
-    .instance_finalize = char_pty_finalize,
-    .class_init = char_pty_class_init,
-};
 
 static void tty_serial_init(int fd, int speed,
                             int parity, int data_bits, int stop_bits)
@@ -2153,9 +1898,6 @@ static void register_types(void)
 #ifdef HAVE_CHARDEV_PARPORT
     type_register_static(&char_parallel_type_info);
 #endif
-#ifdef HAVE_CHARDEV_PTY
-    type_register_static(&char_pty_type_info);
-#endif
 
     /* this must be done after machine init, since we register FEs with muxes
      * as part of realize functions like serial_isa_realizefn when -nographic
diff --git a/chardev/Makefile.objs b/chardev/Makefile.objs
index 778b312377..b2c14fe795 100644
--- a/chardev/Makefile.objs
+++ b/chardev/Makefile.objs
@@ -6,6 +6,7 @@ chardev-obj-y += char-io.o
 chardev-obj-y += char-mux.o
 chardev-obj-y += char-null.o
 chardev-obj-y += char-pipe.o
+chardev-obj-$(CONFIG_POSIX) += char-pty.o
 chardev-obj-y += char-ringbuf.o
 chardev-obj-y += char-socket.o
 chardev-obj-y += char-stdio.o
-- 
2.11.0

[Qemu-devel] [PATCH 38/40] char: move serial chardev to itw own file

[Marc-André Lureau]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 chardev/char-serial.h |  12 ++
 chardev/char-serial.c | 295 ++++++++++++++++++++++++++++++++++++++++++++++++++
 chardev/char.c        | 278 +----------------------------------------------
 chardev/Makefile.objs |   1 +
 4 files changed, 310 insertions(+), 276 deletions(-)
 create mode 100644 chardev/char-serial.h
 create mode 100644 chardev/char-serial.c

diff --git a/chardev/char-serial.h b/chardev/char-serial.h
new file mode 100644
index 0000000000..404e3d0305
--- /dev/null
+++ b/chardev/char-serial.h
@@ -0,0 +1,12 @@
+#ifndef CHAR_SERIAL_H
+#define CHAR_SERIAL_H
+
+#ifdef _WIN32
+#define HAVE_CHARDEV_SERIAL 1
+#elif defined(__linux__) || defined(__sun__) || defined(__FreeBSD__)    \
+    || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
+    || defined(__GLIBC__)
+#define HAVE_CHARDEV_SERIAL 1
+#endif
+
+#endif
diff --git a/chardev/char-serial.c b/chardev/char-serial.c
new file mode 100644
index 0000000000..c2c33bcf7e
--- /dev/null
+++ b/chardev/char-serial.c
@@ -0,0 +1,295 @@
+#include "qemu/osdep.h"
+#include "qemu/sockets.h"
+#include "io/channel-file.h"
+#include "qapi/error.h"
+
+#ifdef _WIN32
+#include "char-win.h"
+#else
+#include <sys/ioctl.h>
+#include <termios.h>
+#include "char-fd.h"
+#endif
+
+#include "char-serial.h"
+
+#ifdef _WIN32
+
+static void qmp_chardev_open_serial(Chardev *chr,
+                                    ChardevBackend *backend,
+                                    bool *be_opened,
+                                    Error **errp)
+{
+    ChardevHostdev *serial = backend->u.serial.data;
+
+    win_chr_init(chr, serial->device, errp);
+}
+
+#elif defined(__linux__) || defined(__sun__) || defined(__FreeBSD__)      \
+    || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
+    || defined(__GLIBC__)
+
+static void tty_serial_init(int fd, int speed,
+                            int parity, int data_bits, int stop_bits)
+{
+    struct termios tty;
+    speed_t spd;
+
+#if 0
+    printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
+           speed, parity, data_bits, stop_bits);
+#endif
+    tcgetattr(fd, &tty);
+
+#define check_speed(val) if (speed <= val) { spd = B##val; break; }
+    speed = speed * 10 / 11;
+    do {
+        check_speed(50);
+        check_speed(75);
+        check_speed(110);
+        check_speed(134);
+        check_speed(150);
+        check_speed(200);
+        check_speed(300);
+        check_speed(600);
+        check_speed(1200);
+        check_speed(1800);
+        check_speed(2400);
+        check_speed(4800);
+        check_speed(9600);
+        check_speed(19200);
+        check_speed(38400);
+        /* Non-Posix values follow. They may be unsupported on some systems. */
+        check_speed(57600);
+        check_speed(115200);
+#ifdef B230400
+        check_speed(230400);
+#endif
+#ifdef B460800
+        check_speed(460800);
+#endif
+#ifdef B500000
+        check_speed(500000);
+#endif
+#ifdef B576000
+        check_speed(576000);
+#endif
+#ifdef B921600
+        check_speed(921600);
+#endif
+#ifdef B1000000
+        check_speed(1000000);
+#endif
+#ifdef B1152000
+        check_speed(1152000);
+#endif
+#ifdef B1500000
+        check_speed(1500000);
+#endif
+#ifdef B2000000
+        check_speed(2000000);
+#endif
+#ifdef B2500000
+        check_speed(2500000);
+#endif
+#ifdef B3000000
+        check_speed(3000000);
+#endif
+#ifdef B3500000
+        check_speed(3500000);
+#endif
+#ifdef B4000000
+        check_speed(4000000);
+#endif
+        spd = B115200;
+    } while (0);
+
+    cfsetispeed(&tty, spd);
+    cfsetospeed(&tty, spd);
+
+    tty.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP
+                     | INLCR | IGNCR | ICRNL | IXON);
+    tty.c_oflag |= OPOST;
+    tty.c_lflag &= ~(ECHO | ECHONL | ICANON | IEXTEN | ISIG);
+    tty.c_cflag &= ~(CSIZE | PARENB | PARODD | CRTSCTS | CSTOPB);
+    switch (data_bits) {
+    default:
+    case 8:
+        tty.c_cflag |= CS8;
+        break;
+    case 7:
+        tty.c_cflag |= CS7;
+        break;
+    case 6:
+        tty.c_cflag |= CS6;
+        break;
+    case 5:
+        tty.c_cflag |= CS5;
+        break;
+    }
+    switch (parity) {
+    default:
+    case 'N':
+        break;
+    case 'E':
+        tty.c_cflag |= PARENB;
+        break;
+    case 'O':
+        tty.c_cflag |= PARENB | PARODD;
+        break;
+    }
+    if (stop_bits == 2) {
+        tty.c_cflag |= CSTOPB;
+    }
+
+    tcsetattr(fd, TCSANOW, &tty);
+}
+
+static int tty_serial_ioctl(Chardev *chr, int cmd, void *arg)
+{
+    FDChardev *s = FD_CHARDEV(chr);
+    QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc_in);
+
+    switch (cmd) {
+    case CHR_IOCTL_SERIAL_SET_PARAMS:
+        {
+            QEMUSerialSetParams *ssp = arg;
+            tty_serial_init(fioc->fd,
+                            ssp->speed, ssp->parity,
+                            ssp->data_bits, ssp->stop_bits);
+        }
+        break;
+    case CHR_IOCTL_SERIAL_SET_BREAK:
+        {
+            int enable = *(int *)arg;
+            if (enable) {
+                tcsendbreak(fioc->fd, 1);
+            }
+        }
+        break;
+    case CHR_IOCTL_SERIAL_GET_TIOCM:
+        {
+            int sarg = 0;
+            int *targ = (int *)arg;
+            ioctl(fioc->fd, TIOCMGET, &sarg);
+            *targ = 0;
+            if (sarg & TIOCM_CTS) {
+                *targ |= CHR_TIOCM_CTS;
+            }
+            if (sarg & TIOCM_CAR) {
+                *targ |= CHR_TIOCM_CAR;
+            }
+            if (sarg & TIOCM_DSR) {
+                *targ |= CHR_TIOCM_DSR;
+            }
+            if (sarg & TIOCM_RI) {
+                *targ |= CHR_TIOCM_RI;
+            }
+            if (sarg & TIOCM_DTR) {
+                *targ |= CHR_TIOCM_DTR;
+            }
+            if (sarg & TIOCM_RTS) {
+                *targ |= CHR_TIOCM_RTS;
+            }
+        }
+        break;
+    case CHR_IOCTL_SERIAL_SET_TIOCM:
+        {
+            int sarg = *(int *)arg;
+            int targ = 0;
+            ioctl(fioc->fd, TIOCMGET, &targ);
+            targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
+                     | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
+            if (sarg & CHR_TIOCM_CTS) {
+                targ |= TIOCM_CTS;
+            }
+            if (sarg & CHR_TIOCM_CAR) {
+                targ |= TIOCM_CAR;
+            }
+            if (sarg & CHR_TIOCM_DSR) {
+                targ |= TIOCM_DSR;
+            }
+            if (sarg & CHR_TIOCM_RI) {
+                targ |= TIOCM_RI;
+            }
+            if (sarg & CHR_TIOCM_DTR) {
+                targ |= TIOCM_DTR;
+            }
+            if (sarg & CHR_TIOCM_RTS) {
+                targ |= TIOCM_RTS;
+            }
+            ioctl(fioc->fd, TIOCMSET, &targ);
+        }
+        break;
+    default:
+        return -ENOTSUP;
+    }
+    return 0;
+}
+
+static void qmp_chardev_open_serial(Chardev *chr,
+                                    ChardevBackend *backend,
+                                    bool *be_opened,
+                                    Error **errp)
+{
+    ChardevHostdev *serial = backend->u.serial.data;
+    int fd;
+
+    fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
+    if (fd < 0) {
+        return;
+    }
+    qemu_set_nonblock(fd);
+    tty_serial_init(fd, 115200, 'N', 8, 1);
+
+    qemu_chr_open_fd(chr, fd, fd);
+}
+#endif /* __linux__ || __sun__ */
+
+#ifdef HAVE_CHARDEV_SERIAL
+static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
+                                  Error **errp)
+{
+    const char *device = qemu_opt_get(opts, "path");
+    ChardevHostdev *serial;
+
+    if (device == NULL) {
+        error_setg(errp, "chardev: serial/tty: no device path given");
+        return;
+    }
+    backend->type = CHARDEV_BACKEND_KIND_SERIAL;
+    serial = backend->u.serial.data = g_new0(ChardevHostdev, 1);
+    qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(serial));
+    serial->device = g_strdup(device);
+}
+
+static void char_serial_class_init(ObjectClass *oc, void *data)
+{
+    ChardevClass *cc = CHARDEV_CLASS(oc);
+
+    cc->parse = qemu_chr_parse_serial;
+    cc->open = qmp_chardev_open_serial;
+#ifndef _WIN32
+    cc->chr_ioctl = tty_serial_ioctl;
+#endif
+}
+
+
+static const TypeInfo char_serial_type_info = {
+    .name = TYPE_CHARDEV_SERIAL,
+#ifdef _WIN32
+    .parent = TYPE_CHARDEV_WIN,
+#else
+    .parent = TYPE_CHARDEV_FD,
+#endif
+    .class_init = char_serial_class_init,
+};
+
+static void register_types(void)
+{
+    type_register_static(&char_serial_type_info);
+}
+
+type_init(register_types);
+
+#endif
diff --git a/chardev/char.c b/chardev/char.c
index ac29fcc841..ae0d422b84 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -36,7 +36,6 @@
 #include "qapi-visit.h"
 #include "qemu/base64.h"
 #include "io/channel-socket.h"
-#include "io/channel-file.h"
 #include "io/channel-tls.h"
 #include "sysemu/replay.h"
 #include "qemu/help_option.h"
@@ -46,7 +45,6 @@
 #ifndef _WIN32
 #include <sys/times.h>
 #include <sys/wait.h>
-#include <termios.h>
 #include <sys/ioctl.h>
 #include <sys/resource.h>
 #include <sys/socket.h>
@@ -91,6 +89,7 @@
 #ifdef _WIN32
 #include "char-win.h"
 #endif
+#include "char-serial.h"
 
 /***********************************************************/
 /* character device */
@@ -656,198 +655,6 @@ void qemu_chr_fe_take_focus(CharBackend *b)
 
 #ifndef _WIN32
 
-#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
-    || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
-    || defined(__GLIBC__)
-
-#define HAVE_CHARDEV_SERIAL 1
-
-static void tty_serial_init(int fd, int speed,
-                            int parity, int data_bits, int stop_bits)
-{
-    struct termios tty;
-    speed_t spd;
-
-#if 0
-    printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
-           speed, parity, data_bits, stop_bits);
-#endif
-    tcgetattr (fd, &tty);
-
-#define check_speed(val) if (speed <= val) { spd = B##val; break; }
-    speed = speed * 10 / 11;
-    do {
-        check_speed(50);
-        check_speed(75);
-        check_speed(110);
-        check_speed(134);
-        check_speed(150);
-        check_speed(200);
-        check_speed(300);
-        check_speed(600);
-        check_speed(1200);
-        check_speed(1800);
-        check_speed(2400);
-        check_speed(4800);
-        check_speed(9600);
-        check_speed(19200);
-        check_speed(38400);
-        /* Non-Posix values follow. They may be unsupported on some systems. */
-        check_speed(57600);
-        check_speed(115200);
-#ifdef B230400
-        check_speed(230400);
-#endif
-#ifdef B460800
-        check_speed(460800);
-#endif
-#ifdef B500000
-        check_speed(500000);
-#endif
-#ifdef B576000
-        check_speed(576000);
-#endif
-#ifdef B921600
-        check_speed(921600);
-#endif
-#ifdef B1000000
-        check_speed(1000000);
-#endif
-#ifdef B1152000
-        check_speed(1152000);
-#endif
-#ifdef B1500000
-        check_speed(1500000);
-#endif
-#ifdef B2000000
-        check_speed(2000000);
-#endif
-#ifdef B2500000
-        check_speed(2500000);
-#endif
-#ifdef B3000000
-        check_speed(3000000);
-#endif
-#ifdef B3500000
-        check_speed(3500000);
-#endif
-#ifdef B4000000
-        check_speed(4000000);
-#endif
-        spd = B115200;
-    } while (0);
-
-    cfsetispeed(&tty, spd);
-    cfsetospeed(&tty, spd);
-
-    tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
-                          |INLCR|IGNCR|ICRNL|IXON);
-    tty.c_oflag |= OPOST;
-    tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
-    tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
-    switch(data_bits) {
-    default:
-    case 8:
-        tty.c_cflag |= CS8;
-        break;
-    case 7:
-        tty.c_cflag |= CS7;
-        break;
-    case 6:
-        tty.c_cflag |= CS6;
-        break;
-    case 5:
-        tty.c_cflag |= CS5;
-        break;
-    }
-    switch(parity) {
-    default:
-    case 'N':
-        break;
-    case 'E':
-        tty.c_cflag |= PARENB;
-        break;
-    case 'O':
-        tty.c_cflag |= PARENB | PARODD;
-        break;
-    }
-    if (stop_bits == 2)
-        tty.c_cflag |= CSTOPB;
-
-    tcsetattr (fd, TCSANOW, &tty);
-}
-
-static int tty_serial_ioctl(Chardev *chr, int cmd, void *arg)
-{
-    FDChardev *s = FD_CHARDEV(chr);
-    QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc_in);
-
-    switch(cmd) {
-    case CHR_IOCTL_SERIAL_SET_PARAMS:
-        {
-            QEMUSerialSetParams *ssp = arg;
-            tty_serial_init(fioc->fd,
-                            ssp->speed, ssp->parity,
-                            ssp->data_bits, ssp->stop_bits);
-        }
-        break;
-    case CHR_IOCTL_SERIAL_SET_BREAK:
-        {
-            int enable = *(int *)arg;
-            if (enable) {
-                tcsendbreak(fioc->fd, 1);
-            }
-        }
-        break;
-    case CHR_IOCTL_SERIAL_GET_TIOCM:
-        {
-            int sarg = 0;
-            int *targ = (int *)arg;
-            ioctl(fioc->fd, TIOCMGET, &sarg);
-            *targ = 0;
-            if (sarg & TIOCM_CTS)
-                *targ |= CHR_TIOCM_CTS;
-            if (sarg & TIOCM_CAR)
-                *targ |= CHR_TIOCM_CAR;
-            if (sarg & TIOCM_DSR)
-                *targ |= CHR_TIOCM_DSR;
-            if (sarg & TIOCM_RI)
-                *targ |= CHR_TIOCM_RI;
-            if (sarg & TIOCM_DTR)
-                *targ |= CHR_TIOCM_DTR;
-            if (sarg & TIOCM_RTS)
-                *targ |= CHR_TIOCM_RTS;
-        }
-        break;
-    case CHR_IOCTL_SERIAL_SET_TIOCM:
-        {
-            int sarg = *(int *)arg;
-            int targ = 0;
-            ioctl(fioc->fd, TIOCMGET, &targ);
-            targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
-                     | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
-            if (sarg & CHR_TIOCM_CTS)
-                targ |= TIOCM_CTS;
-            if (sarg & CHR_TIOCM_CAR)
-                targ |= TIOCM_CAR;
-            if (sarg & CHR_TIOCM_DSR)
-                targ |= TIOCM_DSR;
-            if (sarg & CHR_TIOCM_RI)
-                targ |= TIOCM_RI;
-            if (sarg & CHR_TIOCM_DTR)
-                targ |= TIOCM_DTR;
-            if (sarg & CHR_TIOCM_RTS)
-                targ |= TIOCM_RTS;
-            ioctl(fioc->fd, TIOCMSET, &targ);
-        }
-        break;
-    default:
-        return -ENOTSUP;
-    }
-    return 0;
-}
-#endif /* __linux__ || __sun__ */
-
 #if defined(__linux__)
 
 #define HAVE_CHARDEV_PARPORT 1
@@ -1036,10 +843,6 @@ static void qemu_chr_open_pp_fd(Chardev *chr,
 }
 #endif
 
-#else /* _WIN32 */
-
-#define HAVE_CHARDEV_SERIAL 1
-
 #endif /* !_WIN32 */
 
 int qemu_chr_wait_connected(Chardev *chr, Error **errp)
@@ -1216,24 +1019,6 @@ void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend)
     backend->logappend = qemu_opt_get_bool(opts, "logappend", false);
 }
 
-#ifdef HAVE_CHARDEV_SERIAL
-static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
-                                  Error **errp)
-{
-    const char *device = qemu_opt_get(opts, "path");
-    ChardevHostdev *serial;
-
-    backend->type = CHARDEV_BACKEND_KIND_SERIAL;
-    if (device == NULL) {
-        error_setg(errp, "chardev: serial/tty: no device path given");
-        return;
-    }
-    serial = backend->u.serial.data = g_new0(ChardevHostdev, 1);
-    qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(serial));
-    serial->device = g_strdup(device);
-}
-#endif
-
 #ifdef HAVE_CHARDEV_PARPORT
 static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
                                     Error **errp)
@@ -1677,39 +1462,7 @@ QemuOptsList qemu_chardev_opts = {
     },
 };
 
-#ifdef _WIN32
-
-static void qmp_chardev_open_serial(Chardev *chr,
-                                    ChardevBackend *backend,
-                                    bool *be_opened,
-                                    Error **errp)
-{
-    ChardevHostdev *serial = backend->u.serial.data;
-
-    win_chr_init(chr, serial->device, errp);
-}
-
-#else /* WIN32 */
-
-#ifdef HAVE_CHARDEV_SERIAL
-static void qmp_chardev_open_serial(Chardev *chr,
-                                    ChardevBackend *backend,
-                                    bool *be_opened,
-                                    Error **errp)
-{
-    ChardevHostdev *serial = backend->u.serial.data;
-    int fd;
-
-    fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
-    if (fd < 0) {
-        return;
-    }
-    qemu_set_nonblock(fd);
-    tty_serial_init(fd, 115200, 'N', 8, 1);
-
-    qemu_chr_open_fd(chr, fd, fd);
-}
-#endif
+#ifndef _WIN32
 
 #ifdef HAVE_CHARDEV_PARPORT
 static void qmp_chardev_open_parallel(Chardev *chr,
@@ -1767,30 +1520,6 @@ static const TypeInfo char_parallel_type_info = {
 
 #endif /* WIN32 */
 
-#ifdef HAVE_CHARDEV_SERIAL
-
-static void char_serial_class_init(ObjectClass *oc, void *data)
-{
-    ChardevClass *cc = CHARDEV_CLASS(oc);
-
-    cc->parse = qemu_chr_parse_serial;
-    cc->open = qmp_chardev_open_serial;
-#ifndef _WIN32
-    cc->chr_ioctl = tty_serial_ioctl;
-#endif
-}
-
-static const TypeInfo char_serial_type_info = {
-    .name = TYPE_CHARDEV_SERIAL,
-#ifdef _WIN32
-    .parent = TYPE_CHARDEV_WIN,
-#else
-    .parent = TYPE_CHARDEV_FD,
-#endif
-    .class_init = char_serial_class_init,
-};
-#endif
-
 bool qemu_chr_has_feature(Chardev *chr,
                           ChardevFeature feature)
 {
@@ -1892,9 +1621,6 @@ void qemu_chr_cleanup(void)
 static void register_types(void)
 {
     type_register_static(&char_type_info);
-#ifdef HAVE_CHARDEV_SERIAL
-    type_register_static(&char_serial_type_info);
-#endif
 #ifdef HAVE_CHARDEV_PARPORT
     type_register_static(&char_parallel_type_info);
 #endif
diff --git a/chardev/Makefile.objs b/chardev/Makefile.objs
index b2c14fe795..45fc8af0c4 100644
--- a/chardev/Makefile.objs
+++ b/chardev/Makefile.objs
@@ -8,6 +8,7 @@ chardev-obj-y += char-null.o
 chardev-obj-y += char-pipe.o
 chardev-obj-$(CONFIG_POSIX) += char-pty.o
 chardev-obj-y += char-ringbuf.o
+chardev-obj-y += char-serial.o
 chardev-obj-y += char-socket.o
 chardev-obj-y += char-stdio.o
 chardev-obj-y += char-udp.o
-- 
2.11.0

[Qemu-devel] [PATCH 39/40] char: move parallel chardev in its own file

[Marc-André Lureau]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 chardev/char-parallel.h |   9 ++
 chardev/char-parallel.c | 293 ++++++++++++++++++++++++++++++++++++++++++++++++
 chardev/char.c          | 288 +----------------------------------------------
 chardev/Makefile.objs   |   1 +
 4 files changed, 304 insertions(+), 287 deletions(-)
 create mode 100644 chardev/char-parallel.h
 create mode 100644 chardev/char-parallel.c

diff --git a/chardev/char-parallel.h b/chardev/char-parallel.h
new file mode 100644
index 0000000000..43d285971b
--- /dev/null
+++ b/chardev/char-parallel.h
@@ -0,0 +1,9 @@
+#ifndef CHAR_PARALLEL_H
+#define CHAR_PARALLEL_H
+
+#if defined(__linux__) || defined(__FreeBSD__) || \
+    defined(__FreeBSD_kernel__) || defined(__DragonFly__)
+#define HAVE_CHARDEV_PARPORT 1
+#endif
+
+#endif /* CHAR_PARALLEL_H */
diff --git a/chardev/char-parallel.c b/chardev/char-parallel.c
new file mode 100644
index 0000000000..0286a95ed4
--- /dev/null
+++ b/chardev/char-parallel.c
@@ -0,0 +1,293 @@
+#include "qemu/osdep.h"
+#include "sysemu/char.h"
+#include "qapi/error.h"
+#include <sys/ioctl.h>
+
+#ifdef CONFIG_BSD
+#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
+#include <dev/ppbus/ppi.h>
+#include <dev/ppbus/ppbconf.h>
+#elif defined(__DragonFly__)
+#include <dev/misc/ppi/ppi.h>
+#include <bus/ppbus/ppbconf.h>
+#endif
+#else
+#ifdef __linux__
+#include <linux/ppdev.h>
+#include <linux/parport.h>
+#endif
+#endif
+
+#include "char-fd.h"
+#include "char-parallel.h"
+
+#if defined(__linux__)
+
+typedef struct {
+    Chardev parent;
+    int fd;
+    int mode;
+} ParallelChardev;
+
+#define PARALLEL_CHARDEV(obj) \
+    OBJECT_CHECK(ParallelChardev, (obj), TYPE_CHARDEV_PARALLEL)
+
+static int pp_hw_mode(ParallelChardev *s, uint16_t mode)
+{
+    if (s->mode != mode) {
+        int m = mode;
+        if (ioctl(s->fd, PPSETMODE, &m) < 0) {
+            return 0;
+        }
+        s->mode = mode;
+    }
+    return 1;
+}
+
+static int pp_ioctl(Chardev *chr, int cmd, void *arg)
+{
+    ParallelChardev *drv = PARALLEL_CHARDEV(chr);
+    int fd = drv->fd;
+    uint8_t b;
+
+    switch (cmd) {
+    case CHR_IOCTL_PP_READ_DATA:
+        if (ioctl(fd, PPRDATA, &b) < 0) {
+            return -ENOTSUP;
+        }
+        *(uint8_t *)arg = b;
+        break;
+    case CHR_IOCTL_PP_WRITE_DATA:
+        b = *(uint8_t *)arg;
+        if (ioctl(fd, PPWDATA, &b) < 0) {
+            return -ENOTSUP;
+        }
+        break;
+    case CHR_IOCTL_PP_READ_CONTROL:
+        if (ioctl(fd, PPRCONTROL, &b) < 0) {
+            return -ENOTSUP;
+        }
+        /* Linux gives only the lowest bits, and no way to know data
+           direction! For better compatibility set the fixed upper
+           bits. */
+        *(uint8_t *)arg = b | 0xc0;
+        break;
+    case CHR_IOCTL_PP_WRITE_CONTROL:
+        b = *(uint8_t *)arg;
+        if (ioctl(fd, PPWCONTROL, &b) < 0) {
+            return -ENOTSUP;
+        }
+        break;
+    case CHR_IOCTL_PP_READ_STATUS:
+        if (ioctl(fd, PPRSTATUS, &b) < 0) {
+            return -ENOTSUP;
+        }
+        *(uint8_t *)arg = b;
+        break;
+    case CHR_IOCTL_PP_DATA_DIR:
+        if (ioctl(fd, PPDATADIR, (int *)arg) < 0) {
+            return -ENOTSUP;
+        }
+        break;
+    case CHR_IOCTL_PP_EPP_READ_ADDR:
+        if (pp_hw_mode(drv, IEEE1284_MODE_EPP | IEEE1284_ADDR)) {
+            struct ParallelIOArg *parg = arg;
+            int n = read(fd, parg->buffer, parg->count);
+            if (n != parg->count) {
+                return -EIO;
+            }
+        }
+        break;
+    case CHR_IOCTL_PP_EPP_READ:
+        if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
+            struct ParallelIOArg *parg = arg;
+            int n = read(fd, parg->buffer, parg->count);
+            if (n != parg->count) {
+                return -EIO;
+            }
+        }
+        break;
+    case CHR_IOCTL_PP_EPP_WRITE_ADDR:
+        if (pp_hw_mode(drv, IEEE1284_MODE_EPP | IEEE1284_ADDR)) {
+            struct ParallelIOArg *parg = arg;
+            int n = write(fd, parg->buffer, parg->count);
+            if (n != parg->count) {
+                return -EIO;
+            }
+        }
+        break;
+    case CHR_IOCTL_PP_EPP_WRITE:
+        if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
+            struct ParallelIOArg *parg = arg;
+            int n = write(fd, parg->buffer, parg->count);
+            if (n != parg->count) {
+                return -EIO;
+            }
+        }
+        break;
+    default:
+        return -ENOTSUP;
+    }
+    return 0;
+}
+
+static void qemu_chr_open_pp_fd(Chardev *chr,
+                                int fd,
+                                bool *be_opened,
+                                Error **errp)
+{
+    ParallelChardev *drv = PARALLEL_CHARDEV(chr);
+
+    if (ioctl(fd, PPCLAIM) < 0) {
+        error_setg_errno(errp, errno, "not a parallel port");
+        close(fd);
+        return;
+    }
+
+    drv->fd = fd;
+    drv->mode = IEEE1284_MODE_COMPAT;
+}
+#endif /* __linux__ */
+
+#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
+
+typedef struct {
+    Chardev parent;
+    int fd;
+} ParallelChardev;
+
+#define PARALLEL_CHARDEV(obj)                                   \
+    OBJECT_CHECK(ParallelChardev, (obj), TYPE_CHARDEV_PARALLEL)
+
+static int pp_ioctl(Chardev *chr, int cmd, void *arg)
+{
+    ParallelChardev *drv = PARALLEL_CHARDEV(chr);
+    uint8_t b;
+
+    switch (cmd) {
+    case CHR_IOCTL_PP_READ_DATA:
+        if (ioctl(drv->fd, PPIGDATA, &b) < 0) {
+            return -ENOTSUP;
+        }
+        *(uint8_t *)arg = b;
+        break;
+    case CHR_IOCTL_PP_WRITE_DATA:
+        b = *(uint8_t *)arg;
+        if (ioctl(drv->fd, PPISDATA, &b) < 0) {
+            return -ENOTSUP;
+        }
+        break;
+    case CHR_IOCTL_PP_READ_CONTROL:
+        if (ioctl(drv->fd, PPIGCTRL, &b) < 0) {
+            return -ENOTSUP;
+        }
+        *(uint8_t *)arg = b;
+        break;
+    case CHR_IOCTL_PP_WRITE_CONTROL:
+        b = *(uint8_t *)arg;
+        if (ioctl(drv->fd, PPISCTRL, &b) < 0) {
+            return -ENOTSUP;
+        }
+        break;
+    case CHR_IOCTL_PP_READ_STATUS:
+        if (ioctl(drv->fd, PPIGSTATUS, &b) < 0) {
+            return -ENOTSUP;
+        }
+        *(uint8_t *)arg = b;
+        break;
+    default:
+        return -ENOTSUP;
+    }
+    return 0;
+}
+
+static void qemu_chr_open_pp_fd(Chardev *chr,
+                                int fd,
+                                bool *be_opened,
+                                Error **errp)
+{
+    ParallelChardev *drv = PARALLEL_CHARDEV(chr);
+    drv->fd = fd;
+    *be_opened = false;
+}
+#endif
+
+#ifdef HAVE_CHARDEV_PARPORT
+static void qmp_chardev_open_parallel(Chardev *chr,
+                                      ChardevBackend *backend,
+                                      bool *be_opened,
+                                      Error **errp)
+{
+    ChardevHostdev *parallel = backend->u.parallel.data;
+    int fd;
+
+    fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
+    if (fd < 0) {
+        return;
+    }
+    qemu_chr_open_pp_fd(chr, fd, be_opened, errp);
+}
+
+static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
+                                    Error **errp)
+{
+    const char *device = qemu_opt_get(opts, "path");
+    ChardevHostdev *parallel;
+
+    if (device == NULL) {
+        error_setg(errp, "chardev: parallel: no device path given");
+        return;
+    }
+    backend->type = CHARDEV_BACKEND_KIND_PARALLEL;
+    parallel = backend->u.parallel.data = g_new0(ChardevHostdev, 1);
+    qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(parallel));
+    parallel->device = g_strdup(device);
+}
+
+static void char_parallel_class_init(ObjectClass *oc, void *data)
+{
+    ChardevClass *cc = CHARDEV_CLASS(oc);
+
+    cc->parse = qemu_chr_parse_parallel;
+    cc->open = qmp_chardev_open_parallel;
+#if defined(__linux__)
+    cc->chr_ioctl = pp_ioctl;
+#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \
+    defined(__DragonFly__)
+    cc->chr_ioctl = pp_ioctl;
+#endif
+}
+
+static void char_parallel_finalize(Object *obj)
+{
+#if defined(__linux__)
+    Chardev *chr = CHARDEV(obj);
+    ParallelChardev *drv = PARALLEL_CHARDEV(chr);
+    int fd = drv->fd;
+
+    pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
+    ioctl(fd, PPRELEASE);
+    close(fd);
+    qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
+#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \
+    defined(__DragonFly__)
+    /* FIXME: close fd? */
+#endif
+}
+
+static const TypeInfo char_parallel_type_info = {
+    .name = TYPE_CHARDEV_PARALLEL,
+    .parent = TYPE_CHARDEV,
+    .instance_size = sizeof(ParallelChardev),
+    .instance_finalize = char_parallel_finalize,
+    .class_init = char_parallel_class_init,
+};
+
+static void register_types(void)
+{
+    type_register_static(&char_parallel_type_info);
+}
+
+type_init(register_types);
+
+#endif
diff --git a/chardev/char.c b/chardev/char.c
index ae0d422b84..037cf8d52c 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -53,19 +53,6 @@
 #include <arpa/inet.h>
 #include <netdb.h>
 #include <sys/select.h>
-#ifdef CONFIG_BSD
-#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
-#include <dev/ppbus/ppi.h>
-#include <dev/ppbus/ppbconf.h>
-#elif defined(__DragonFly__)
-#include <dev/misc/ppi/ppi.h>
-#include <bus/ppbus/ppbconf.h>
-#endif
-#else
-#ifdef __linux__
-#include <linux/ppdev.h>
-#include <linux/parport.h>
-#endif
 #ifdef __sun__
 #include <sys/ethernet.h>
 #include <sys/sockio.h>
@@ -78,17 +65,16 @@
 #include <netinet/tcp.h>
 #endif
 #endif
-#endif
 
 #include "qemu/sockets.h"
 #include "ui/qemu-spice.h"
 
 #include "char-mux.h"
-#include "char-fd.h"
 #include "char-io.h"
 #ifdef _WIN32
 #include "char-win.h"
 #endif
+#include "char-parallel.h"
 #include "char-serial.h"
 
 /***********************************************************/
@@ -123,7 +109,6 @@ void qemu_chr_be_generic_open(Chardev *s)
     qemu_chr_be_event(s, CHR_EVENT_OPENED);
 }
 
-
 /* Not reporting errors from writing to logfile, as logs are
  * defined to be "best effort" only */
 static void qemu_chr_fe_write_log(Chardev *s,
@@ -653,198 +638,6 @@ void qemu_chr_fe_take_focus(CharBackend *b)
     }
 }
 
-#ifndef _WIN32
-
-#if defined(__linux__)
-
-#define HAVE_CHARDEV_PARPORT 1
-
-typedef struct {
-    Chardev parent;
-    int fd;
-    int mode;
-} ParallelChardev;
-
-#define PARALLEL_CHARDEV(obj) \
-    OBJECT_CHECK(ParallelChardev, (obj), TYPE_CHARDEV_PARALLEL)
-
-static int pp_hw_mode(ParallelChardev *s, uint16_t mode)
-{
-    if (s->mode != mode) {
-	int m = mode;
-        if (ioctl(s->fd, PPSETMODE, &m) < 0)
-            return 0;
-	s->mode = mode;
-    }
-    return 1;
-}
-
-static int pp_ioctl(Chardev *chr, int cmd, void *arg)
-{
-    ParallelChardev *drv = PARALLEL_CHARDEV(chr);
-    int fd = drv->fd;
-    uint8_t b;
-
-    switch(cmd) {
-    case CHR_IOCTL_PP_READ_DATA:
-        if (ioctl(fd, PPRDATA, &b) < 0)
-            return -ENOTSUP;
-        *(uint8_t *)arg = b;
-        break;
-    case CHR_IOCTL_PP_WRITE_DATA:
-        b = *(uint8_t *)arg;
-        if (ioctl(fd, PPWDATA, &b) < 0)
-            return -ENOTSUP;
-        break;
-    case CHR_IOCTL_PP_READ_CONTROL:
-        if (ioctl(fd, PPRCONTROL, &b) < 0)
-            return -ENOTSUP;
-	/* Linux gives only the lowest bits, and no way to know data
-	   direction! For better compatibility set the fixed upper
-	   bits. */
-        *(uint8_t *)arg = b | 0xc0;
-        break;
-    case CHR_IOCTL_PP_WRITE_CONTROL:
-        b = *(uint8_t *)arg;
-        if (ioctl(fd, PPWCONTROL, &b) < 0)
-            return -ENOTSUP;
-        break;
-    case CHR_IOCTL_PP_READ_STATUS:
-        if (ioctl(fd, PPRSTATUS, &b) < 0)
-            return -ENOTSUP;
-        *(uint8_t *)arg = b;
-        break;
-    case CHR_IOCTL_PP_DATA_DIR:
-        if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
-            return -ENOTSUP;
-        break;
-    case CHR_IOCTL_PP_EPP_READ_ADDR:
-	if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
-	    struct ParallelIOArg *parg = arg;
-	    int n = read(fd, parg->buffer, parg->count);
-	    if (n != parg->count) {
-		return -EIO;
-	    }
-	}
-        break;
-    case CHR_IOCTL_PP_EPP_READ:
-	if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
-	    struct ParallelIOArg *parg = arg;
-	    int n = read(fd, parg->buffer, parg->count);
-	    if (n != parg->count) {
-		return -EIO;
-	    }
-	}
-        break;
-    case CHR_IOCTL_PP_EPP_WRITE_ADDR:
-	if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
-	    struct ParallelIOArg *parg = arg;
-	    int n = write(fd, parg->buffer, parg->count);
-	    if (n != parg->count) {
-		return -EIO;
-	    }
-	}
-        break;
-    case CHR_IOCTL_PP_EPP_WRITE:
-	if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
-	    struct ParallelIOArg *parg = arg;
-	    int n = write(fd, parg->buffer, parg->count);
-	    if (n != parg->count) {
-		return -EIO;
-	    }
-	}
-        break;
-    default:
-        return -ENOTSUP;
-    }
-    return 0;
-}
-
-static void qemu_chr_open_pp_fd(Chardev *chr,
-                                int fd,
-                                bool *be_opened,
-                                Error **errp)
-{
-    ParallelChardev *drv = PARALLEL_CHARDEV(chr);
-
-    if (ioctl(fd, PPCLAIM) < 0) {
-        error_setg_errno(errp, errno, "not a parallel port");
-        close(fd);
-        return;
-    }
-
-    drv->fd = fd;
-    drv->mode = IEEE1284_MODE_COMPAT;
-}
-#endif /* __linux__ */
-
-#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
-
-#define HAVE_CHARDEV_PARPORT 1
-
-typedef struct {
-    Chardev parent;
-    int fd;
-} ParallelChardev;
-
-#define PARALLEL_CHARDEV(obj)                                   \
-    OBJECT_CHECK(ParallelChardev, (obj), TYPE_CHARDEV_PARALLEL)
-
-static int pp_ioctl(Chardev *chr, int cmd, void *arg)
-{
-    ParallelChardev *drv = PARALLEL_CHARDEV(chr);
-    uint8_t b;
-
-    switch (cmd) {
-    case CHR_IOCTL_PP_READ_DATA:
-        if (ioctl(drv->fd, PPIGDATA, &b) < 0) {
-            return -ENOTSUP;
-        }
-        *(uint8_t *)arg = b;
-        break;
-    case CHR_IOCTL_PP_WRITE_DATA:
-        b = *(uint8_t *)arg;
-        if (ioctl(drv->fd, PPISDATA, &b) < 0) {
-            return -ENOTSUP;
-        }
-        break;
-    case CHR_IOCTL_PP_READ_CONTROL:
-        if (ioctl(drv->fd, PPIGCTRL, &b) < 0) {
-            return -ENOTSUP;
-        }
-        *(uint8_t *)arg = b;
-        break;
-    case CHR_IOCTL_PP_WRITE_CONTROL:
-        b = *(uint8_t *)arg;
-        if (ioctl(drv->fd, PPISCTRL, &b) < 0) {
-            return -ENOTSUP;
-        }
-        break;
-    case CHR_IOCTL_PP_READ_STATUS:
-        if (ioctl(drv->fd, PPIGSTATUS, &b) < 0) {
-            return -ENOTSUP;
-        }
-        *(uint8_t *)arg = b;
-        break;
-    default:
-        return -ENOTSUP;
-    }
-    return 0;
-}
-
-static void qemu_chr_open_pp_fd(Chardev *chr,
-                                int fd,
-                                bool *be_opened,
-                                Error **errp)
-{
-    ParallelChardev *drv = PARALLEL_CHARDEV(chr);
-    drv->fd = fd;
-    *be_opened = false;
-}
-#endif
-
-#endif /* !_WIN32 */
-
 int qemu_chr_wait_connected(Chardev *chr, Error **errp)
 {
     ChardevClass *cc = CHARDEV_GET_CLASS(chr);
@@ -1019,24 +812,6 @@ void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend)
     backend->logappend = qemu_opt_get_bool(opts, "logappend", false);
 }
 
-#ifdef HAVE_CHARDEV_PARPORT
-static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
-                                    Error **errp)
-{
-    const char *device = qemu_opt_get(opts, "path");
-    ChardevHostdev *parallel;
-
-    backend->type = CHARDEV_BACKEND_KIND_PARALLEL;
-    if (device == NULL) {
-        error_setg(errp, "chardev: parallel: no device path given");
-        return;
-    }
-    parallel = backend->u.parallel.data = g_new0(ChardevHostdev, 1);
-    qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(parallel));
-    parallel->device = g_strdup(device);
-}
-#endif
-
 static const ChardevClass *char_get_class(const char *driver, Error **errp)
 {
     ObjectClass *oc;
@@ -1462,64 +1237,6 @@ QemuOptsList qemu_chardev_opts = {
     },
 };
 
-#ifndef _WIN32
-
-#ifdef HAVE_CHARDEV_PARPORT
-static void qmp_chardev_open_parallel(Chardev *chr,
-                                      ChardevBackend *backend,
-                                      bool *be_opened,
-                                      Error **errp)
-{
-    ChardevHostdev *parallel = backend->u.parallel.data;
-    int fd;
-
-    fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
-    if (fd < 0) {
-        return;
-    }
-    qemu_chr_open_pp_fd(chr, fd, be_opened, errp);
-}
-
-static void char_parallel_class_init(ObjectClass *oc, void *data)
-{
-    ChardevClass *cc = CHARDEV_CLASS(oc);
-
-    cc->parse = qemu_chr_parse_parallel;
-    cc->open = qmp_chardev_open_parallel;
-#if defined(__linux__)
-    cc->chr_ioctl = pp_ioctl;
-#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
-    cc->chr_ioctl = pp_ioctl;
-#endif
-}
-
-static void char_parallel_finalize(Object *obj)
-{
-#if defined(__linux__)
-    Chardev *chr = CHARDEV(obj);
-    ParallelChardev *drv = PARALLEL_CHARDEV(chr);
-    int fd = drv->fd;
-
-    pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
-    ioctl(fd, PPRELEASE);
-    close(fd);
-    qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
-#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
-    /* FIXME: close fd? */
-#endif
-}
-
-static const TypeInfo char_parallel_type_info = {
-    .name = TYPE_CHARDEV_PARALLEL,
-    .parent = TYPE_CHARDEV,
-    .instance_size = sizeof(ParallelChardev),
-    .instance_finalize = char_parallel_finalize,
-    .class_init = char_parallel_class_init,
-};
-#endif
-
-#endif /* WIN32 */
-
 bool qemu_chr_has_feature(Chardev *chr,
                           ChardevFeature feature)
 {
@@ -1621,9 +1338,6 @@ void qemu_chr_cleanup(void)
 static void register_types(void)
 {
     type_register_static(&char_type_info);
-#ifdef HAVE_CHARDEV_PARPORT
-    type_register_static(&char_parallel_type_info);
-#endif
 
     /* this must be done after machine init, since we register FEs with muxes
      * as part of realize functions like serial_isa_realizefn when -nographic
diff --git a/chardev/Makefile.objs b/chardev/Makefile.objs
index 45fc8af0c4..1feda0f0ed 100644
--- a/chardev/Makefile.objs
+++ b/chardev/Makefile.objs
@@ -5,6 +5,7 @@ chardev-obj-y += char-file.o
 chardev-obj-y += char-io.o
 chardev-obj-y += char-mux.o
 chardev-obj-y += char-null.o
+chardev-obj-$(CONFIG_POSIX) += char-parallel.o
 chardev-obj-y += char-pipe.o
 chardev-obj-$(CONFIG_POSIX) += char-pty.o
 chardev-obj-y += char-ringbuf.o
-- 
2.11.0

[Qemu-devel] [PATCH 40/40] char: headers clean-up

[Marc-André Lureau]

Those could probably be squashed with earlier patches, however I
couldn't easily identify them, test them or check if there are still
necessary on various platforms.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 include/sysemu/char.h   |  5 -----
 chardev/char.c          | 40 +---------------------------------------
 hmp.c                   |  1 +
 monitor.c               |  1 +
 qmp.c                   |  1 +
 tests/vhost-user-test.c |  1 +
 6 files changed, 5 insertions(+), 44 deletions(-)

diff --git a/include/sysemu/char.h b/include/sysemu/char.h
index b256e79c31..450881d42c 100644
--- a/include/sysemu/char.h
+++ b/include/sysemu/char.h
@@ -2,12 +2,7 @@
 #define QEMU_CHAR_H
 
 #include "qemu-common.h"
-#include "qemu/queue.h"
 #include "qemu/option.h"
-#include "qemu/config-file.h"
-#include "block/aio.h"
-#include "qapi/qmp/qobject.h"
-#include "qapi/qmp/qstring.h"
 #include "qemu/main-loop.h"
 #include "qemu/bitmap.h"
 #include "qom/object.h"
diff --git a/chardev/char.c b/chardev/char.c
index 037cf8d52c..74332ea7d6 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -26,54 +26,16 @@
 #include "qemu/cutils.h"
 #include "monitor/monitor.h"
 #include "sysemu/sysemu.h"
-#include "sysemu/block-backend.h"
+#include "qemu/config-file.h"
 #include "qemu/error-report.h"
-#include "qemu/timer.h"
 #include "sysemu/char.h"
-#include "hw/usb.h"
 #include "qmp-commands.h"
-#include "qapi/clone-visitor.h"
 #include "qapi-visit.h"
-#include "qemu/base64.h"
-#include "io/channel-socket.h"
-#include "io/channel-tls.h"
 #include "sysemu/replay.h"
 #include "qemu/help_option.h"
 
-#include <zlib.h>
-
-#ifndef _WIN32
-#include <sys/times.h>
-#include <sys/wait.h>
-#include <sys/ioctl.h>
-#include <sys/resource.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <net/if.h>
-#include <arpa/inet.h>
-#include <netdb.h>
-#include <sys/select.h>
-#ifdef __sun__
-#include <sys/ethernet.h>
-#include <sys/sockio.h>
-#include <netinet/arp.h>
-#include <netinet/in.h>
-#include <netinet/in_systm.h>
-#include <netinet/ip.h>
-#include <netinet/ip_icmp.h> // must come after ip.h
-#include <netinet/udp.h>
-#include <netinet/tcp.h>
-#endif
-#endif
-
-#include "qemu/sockets.h"
-#include "ui/qemu-spice.h"
-
 #include "char-mux.h"
 #include "char-io.h"
-#ifdef _WIN32
-#include "char-win.h"
-#endif
 #include "char-parallel.h"
 #include "char-serial.h"
 
diff --git a/hmp.c b/hmp.c
index b86961705d..4bb2ca1060 100644
--- a/hmp.c
+++ b/hmp.c
@@ -19,6 +19,7 @@
 #include "net/eth.h"
 #include "sysemu/char.h"
 #include "sysemu/block-backend.h"
+#include "qemu/config-file.h"
 #include "qemu/option.h"
 #include "qemu/timer.h"
 #include "qmp-commands.h"
diff --git a/monitor.c b/monitor.c
index 90ca4d737a..57bcd66353 100644
--- a/monitor.c
+++ b/monitor.c
@@ -40,6 +40,7 @@
 #include "sysemu/sysemu.h"
 #include "sysemu/numa.h"
 #include "monitor/monitor.h"
+#include "qemu/config-file.h"
 #include "qemu/readline.h"
 #include "ui/console.h"
 #include "ui/input.h"
diff --git a/qmp.c b/qmp.c
index d9554062ed..3788cc7333 100644
--- a/qmp.c
+++ b/qmp.c
@@ -18,6 +18,7 @@
 #include "qemu/cutils.h"
 #include "monitor/monitor.h"
 #include "sysemu/sysemu.h"
+#include "qemu/config-file.h"
 #include "qemu/uuid.h"
 #include "qmp-commands.h"
 #include "sysemu/char.h"
diff --git a/tests/vhost-user-test.c b/tests/vhost-user-test.c
index f3ac6ea21a..2c45c7b29f 100644
--- a/tests/vhost-user-test.c
+++ b/tests/vhost-user-test.c
@@ -12,6 +12,7 @@
 
 #include "libqtest.h"
 #include "qapi/error.h"
+#include "qemu/config-file.h"
 #include "qemu/option.h"
 #include "qemu/range.h"
 #include "qemu/sockets.h"
-- 
2.11.0

Re: [Qemu-devel] [PATCH 01/40] spice-qemu-char: convert to finalize

[Eric Blake]

[-- Attachment #1: Type: text/plain, Size: 372 bytes --]

On 01/11/2017 11:29 AM, Marc-André Lureau wrote:
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---
>  spice-qemu-char.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 

Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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Re: [Qemu-devel] [PATCH 02/40] baum: convert to finalize

[Eric Blake]

[-- Attachment #1: Type: text/plain, Size: 531 bytes --]

On 01/11/2017 11:29 AM, Marc-André Lureau wrote:
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---
>  backends/baum.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 

Reviewed-by: Eric Blake <eblake@redhat.com>

I might have squashed multiple conversions to finalize in one patch, but
since you've already done the work of separating them, I don't mind them
that way.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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Re: [Qemu-devel] [PATCH 11/40] char-win-stdio: convert to finalize

[Eric Blake]

[-- Attachment #1: Type: text/plain, Size: 376 bytes --]

On 01/11/2017 11:29 AM, Marc-André Lureau wrote:
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---
>  qemu-char.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)

Patches 3-11: Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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Re: [Qemu-devel] [PATCH 12/40] char-win: do not override chr_free

[Eric Blake]

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On 01/11/2017 11:29 AM, Marc-André Lureau wrote:
> For some unclear reason to me, char-file does not have chr_free on
> win32. Since we want to switch to instance finalizer instead of class
> chr_free, we should be able to run the base WinChardev class finalizer
> in any case. Use a boolean to skip free to ease the transition to
> instance finalizer.
> 
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---
>  qemu-char.c | 12 +++++++-----
>  1 file changed, 7 insertions(+), 5 deletions(-)
> 
> diff --git a/qemu-char.c b/qemu-char.c
> index ad8e5e7ebf..1954dec9b8 100644
> --- a/qemu-char.c
> +++ b/qemu-char.c
> @@ -2122,6 +2122,8 @@ typedef struct {
>  
>      /* Protected by the Chardev chr_write_lock.  */
>      OVERLAPPED osend;
> +    /* FIXME: file/console do not finalize */
> +    BOOL skip_free;

Do we really need the glib type, or is bool sufficient?

>  } WinChardev;
>  
>  #define TYPE_CHARDEV_WIN "chardev-win"
> @@ -2152,6 +2154,10 @@ static void win_chr_free(Chardev *chr)
>  {
>      WinChardev *s = WIN_CHARDEV(chr);
>  
> +    if (s->skip_free) {
> +        return;
> +    }
> +
>      if (s->hsend) {
>          CloseHandle(s->hsend);
>          s->hsend = NULL;
> @@ -2432,6 +2438,7 @@ static void qemu_chr_open_win_file(Chardev *chr, HANDLE fd_out)
>  {
>      WinChardev *s = WIN_CHARDEV(chr);
>  
> +    s->skip_free = true;

Particularly since you assign it the bool true, rather than the glib TRUE.

With that fixed,
Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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Re: [Qemu-devel] [PATCH 15/40] char: remove chr_free

[Eric Blake]

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On 01/11/2017 11:29 AM, Marc-André Lureau wrote:
> Now it uses Object instance_finalize instead.
> 
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---
>  include/sysemu/char.h |  8 --------
>  qemu-char.c           | 10 +---------
>  2 files changed, 1 insertion(+), 17 deletions(-)

patches 13-15: Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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Re: [Qemu-devel] [PATCH 16/40] char: get rid of CharDriver

[Eric Blake]

[-- Attachment #1: Type: text/plain, Size: 7799 bytes --]

On 01/11/2017 11:29 AM, Marc-André Lureau wrote:
> qemu_chr_new_from_opts() is modified to not need CharDriver backend[]
> array, but uses instead objectified qmp_query_chardev_backends() and
> char_get_class(). The alias field is moved outside in a ChardevAlias[],
> similar to QDevAlias for devices.
> 
> "kind" and "parse" are moved to ChardevClass ("kind" is to be removed
> next)
> 
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---


>  Chardev *qemu_chr_new_from_opts(QemuOpts *opts,
>                                  Error **errp)
>  {
>      Error *local_err = NULL;
> -    const CharDriver *cd = NULL;
> +    const ChardevClass *cc;
>      Chardev *chr;
>      int i;
>      ChardevReturn *ret = NULL;
> @@ -4180,16 +4196,13 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts,
>  
>      if (is_help_option(name)) {
>          GString *str = g_string_new("");
> -        for (i = 0; i < ARRAY_SIZE(backends); i++) {
> -            cd = backends[i];
> -            if (cd) {
> -                g_string_append_printf(str, "\n%s", ChardevBackendKind_lookup[cd->kind]);
> -                if (cd->alias) {
> -                    g_string_append_printf(str, "\n%s", cd->alias);
> -                }
> -            }
> +        ChardevBackendInfoList *l, *il = qmp_query_chardev_backends(NULL);
> +
> +        for (l = il; l != NULL; l = l->next) {
> +            g_string_append_printf(str, "\n%s", l->value->name);
>          }
>  
> +        qapi_free_ChardevBackendInfoList(l);

Is this really the most efficient way to do it?  I guess it works, but
consider what qmp_query_chardev_backends() is doing: it is iterating
through a list of chardevs, and for each one (or its alias), calling a
callback qmp_prepend_backend().  Would a better factorization be to have
a common function that takes care of the iteration and takes a function
pointer for what to do on each element of the iteration, and then
qmp_query_chardev_backend calls helper(qmp_prepend_backup) while this
code calls helper(append_name), so that you aren't wasting the creation
of an entire ChardevBackendInfoList item just for the action of
appending the name?

> @@ -4407,21 +4417,23 @@ qmp_prepend_backend(ChardevBackendInfoList *list, const char *name)
>  ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
>  {
>      ChardevBackendInfoList *backend_list = NULL;
> -    const CharDriver *c;
> +    GSList *l, *list = object_class_get_list(TYPE_CHARDEV, false);
>      int i;
>  
> -    for (i = 0; i < ARRAY_SIZE(backends); i++) {
> -        c = backends[i];
> -        if (!c) {
> +    for (l = list; l; l = l->next) {
> +        ObjectClass *klass = l->data;
> +        assert(g_str_has_prefix(object_class_get_name(klass), "chardev-"));
> +        if (CHARDEV_CLASS(klass)->internal) {
>              continue;
>          }
> -
>          backend_list = qmp_prepend_backend(backend_list,
> -                                           ChardevBackendKind_lookup[c->kind]);
> -        if (c->alias) {
> -            backend_list = qmp_prepend_backend(backend_list, c->alias);
> -        }
> +                                           object_class_get_name(klass) + 8);
> +    }
> +    for (i = 0; i < ARRAY_SIZE(chardev_alias_table); i++) {
> +        backend_list = qmp_prepend_backend(backend_list,
> +                                           chardev_alias_table[i].alias);

This changes the order of the list which is output to the user
(shouldn't matter in practice, but may be worth mentioning in the commit
message as intentionally safe).

Again, I think that a little more refactoring to have the iteration over
object_class_get_list() and chardev_alias_table[], coupled with a
callback passed in by the client (with clients qemu_chr_new_from_opts
and qmp_query_chardev_backends), will separate the iteration from the
action, so that you don't always have to create a ChardevBackendInfoList
that will just be thrown away.

>      }
> +    g_slist_free(l);

Shouldn't this be g_slist_free(list)?

> @@ -4983,35 +4978,6 @@ void qemu_chr_set_feature(Chardev *chr,
>      return set_bit(feature, chr->features);
>  }
>  
> -static const ChardevClass *char_get_class(const char *driver, Error **errp)
> -{

This function is just moved earlier, which gets a little messy with the
rest of the patch. Can you split the code motion into a separate patch
for ease of review?  In fact, since it was just barely added in "[PATCH
v2 20/20] chardev: qom-ify]" and that patch hasn't landed yet, can't you
just amend that patch to hoist it early enough in the first place,
rather than churning it?


> @@ -5107,45 +5073,34 @@ void qemu_chr_cleanup(void)
>  
>  static void register_types(void)
>  {
> -    static const struct {
> -        const CharDriver *driver;
> -        const TypeInfo *type;
> -    } chardevs[] = {
> -        { &null_driver, &char_null_type_info },
> -        { &socket_driver, &char_socket_type_info },
> -        { &udp_driver, &char_udp_type_info },
> -        { &ringbuf_driver, &char_ringbuf_type_info },
> -        { &file_driver, &char_file_type_info },
> -        { &stdio_driver, &char_stdio_type_info },
> +    type_register_static(&char_type_info);
> +#ifndef _WIN32
> +    type_register_static(&char_fd_type_info);
> +#else
> +    type_register_static(&char_win_type_info);
> +    type_register_static(&char_win_stdio_type_info);
> +#endif

It's a bit weird that these are registered first,...

> +    type_register_static(&char_null_type_info);
> +    type_register_static(&char_socket_type_info);
> +    type_register_static(&char_udp_type_info);
> +    type_register_static(&char_ringbuf_type_info);
> +    type_register_static(&char_file_type_info);
> +    type_register_static(&char_stdio_type_info);
>  #ifdef HAVE_CHARDEV_SERIAL
> -        { &serial_driver, &char_serial_type_info },
> +    type_register_static(&char_serial_type_info);
>  #endif
>  #ifdef HAVE_CHARDEV_PARPORT
> -        { &parallel_driver, &char_parallel_type_info },
> +    type_register_static(&char_parallel_type_info);
>  #endif
>  #ifdef HAVE_CHARDEV_PTY
> -        { &pty_driver, &char_pty_type_info },
> +    type_register_static(&char_pty_type_info);
>  #endif
>  #ifdef _WIN32
> -        { &console_driver, &char_console_type_info },
> +    type_register_static(&char_console_type_info);

Any reason we can't consolidate the _WIN32 ifdefs into one place?

>  #endif
> -        { &pipe_driver, &char_pipe_type_info },
> -        { &mux_driver, &char_mux_type_info },
> -        { &memory_driver, &char_memory_type_info }
> -    };
> -    int i;
> -
> -    type_register_static(&char_type_info);
> -#ifndef _WIN32
> -    type_register_static(&char_fd_type_info);
> -#else
> -    type_register_static(&char_win_type_info);
> -    type_register_static(&char_win_stdio_type_info);
> -#endif

...when they used to be last; but I don't think it hurts.

> -    for (i = 0; i < ARRAY_SIZE(chardevs); i++) {
> -        type_register_static(chardevs[i].type);
> -        register_char_driver(chardevs[i].driver);
> -    }
> +    type_register_static(&char_pipe_type_info);
> +    type_register_static(&char_mux_type_info);
> +    type_register_static(&char_memory_type_info);
>  
>      /* this must be done after machine init, since we register FEs with muxes
>       * as part of realize functions like serial_isa_realizefn when -nographic
> diff --git a/spice-qemu-char.c b/spice-qemu-char.c

Enough bugs that I'll want to see a v2, but it's headed in the right
direction.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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Re: [Qemu-devel] [PATCH 12/40] char-win: do not override chr_free

[Marc-André Lureau]

----- Original Message -----
> On 01/11/2017 11:29 AM, Marc-André Lureau wrote:
> > For some unclear reason to me, char-file does not have chr_free on
> > win32. Since we want to switch to instance finalizer instead of class
> > chr_free, we should be able to run the base WinChardev class finalizer
> > in any case. Use a boolean to skip free to ease the transition to
> > instance finalizer.
> > 
> > Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> > ---
> >  qemu-char.c | 12 +++++++-----
> >  1 file changed, 7 insertions(+), 5 deletions(-)
> > 
> > diff --git a/qemu-char.c b/qemu-char.c
> > index ad8e5e7ebf..1954dec9b8 100644
> > --- a/qemu-char.c
> > +++ b/qemu-char.c
> > @@ -2122,6 +2122,8 @@ typedef struct {
> >  
> >      /* Protected by the Chardev chr_write_lock.  */
> >      OVERLAPPED osend;
> > +    /* FIXME: file/console do not finalize */
> > +    BOOL skip_free;
> 
> Do we really need the glib type, or is bool sufficient?

It's windows type actually, but bool is sufficient (there is a BOOL fpipe before, probably not needed either)

ok

> 
> >  } WinChardev;
> >  
> >  #define TYPE_CHARDEV_WIN "chardev-win"
> > @@ -2152,6 +2154,10 @@ static void win_chr_free(Chardev *chr)
> >  {
> >      WinChardev *s = WIN_CHARDEV(chr);
> >  
> > +    if (s->skip_free) {
> > +        return;
> > +    }
> > +
> >      if (s->hsend) {
> >          CloseHandle(s->hsend);
> >          s->hsend = NULL;
> > @@ -2432,6 +2438,7 @@ static void qemu_chr_open_win_file(Chardev *chr,
> > HANDLE fd_out)
> >  {
> >      WinChardev *s = WIN_CHARDEV(chr);
> >  
> > +    s->skip_free = true;
> 
> Particularly since you assign it the bool true, rather than the glib TRUE.
> 
> With that fixed,
> Reviewed-by: Eric Blake <eblake@redhat.com>
> 
> --
> Eric Blake   eblake redhat com    +1-919-301-3266
> Libvirt virtualization library http://libvirt.org
> 
> 

Re: [Qemu-devel] [PATCH 16/40] char: get rid of CharDriver

[Marc-André Lureau]

Hi

----- Original Message -----
> On 01/11/2017 11:29 AM, Marc-André Lureau wrote:
> > qemu_chr_new_from_opts() is modified to not need CharDriver backend[]
> > array, but uses instead objectified qmp_query_chardev_backends() and
> > char_get_class(). The alias field is moved outside in a ChardevAlias[],
> > similar to QDevAlias for devices.
> > 
> > "kind" and "parse" are moved to ChardevClass ("kind" is to be removed
> > next)
> > 
> > Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> > ---
> 
> 
> >  Chardev *qemu_chr_new_from_opts(QemuOpts *opts,
> >                                  Error **errp)
> >  {
> >      Error *local_err = NULL;
> > -    const CharDriver *cd = NULL;
> > +    const ChardevClass *cc;
> >      Chardev *chr;
> >      int i;
> >      ChardevReturn *ret = NULL;
> > @@ -4180,16 +4196,13 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts,
> >  
> >      if (is_help_option(name)) {
> >          GString *str = g_string_new("");
> > -        for (i = 0; i < ARRAY_SIZE(backends); i++) {
> > -            cd = backends[i];
> > -            if (cd) {
> > -                g_string_append_printf(str, "\n%s",
> > ChardevBackendKind_lookup[cd->kind]);
> > -                if (cd->alias) {
> > -                    g_string_append_printf(str, "\n%s", cd->alias);
> > -                }
> > -            }
> > +        ChardevBackendInfoList *l, *il = qmp_query_chardev_backends(NULL);
> > +
> > +        for (l = il; l != NULL; l = l->next) {
> > +            g_string_append_printf(str, "\n%s", l->value->name);
> >          }
> >  
> > +        qapi_free_ChardevBackendInfoList(l);
> 
> Is this really the most efficient way to do it?  I guess it works, but
> consider what qmp_query_chardev_backends() is doing: it is iterating
> through a list of chardevs, and for each one (or its alias), calling a
> callback qmp_prepend_backend().  Would a better factorization be to have
> a common function that takes care of the iteration and takes a function
> pointer for what to do on each element of the iteration, and then
> qmp_query_chardev_backend calls helper(qmp_prepend_backup) while this
> code calls helper(append_name), so that you aren't wasting the creation
> of an entire ChardevBackendInfoList item just for the action of
> appending the name?
> 

I don't think speed matters here, but ok

> > @@ -4407,21 +4417,23 @@ qmp_prepend_backend(ChardevBackendInfoList *list,
> > const char *name)
> >  ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
> >  {
> >      ChardevBackendInfoList *backend_list = NULL;
> > -    const CharDriver *c;
> > +    GSList *l, *list = object_class_get_list(TYPE_CHARDEV, false);
> >      int i;
> >  
> > -    for (i = 0; i < ARRAY_SIZE(backends); i++) {
> > -        c = backends[i];
> > -        if (!c) {
> > +    for (l = list; l; l = l->next) {
> > +        ObjectClass *klass = l->data;
> > +        assert(g_str_has_prefix(object_class_get_name(klass),
> > "chardev-"));
> > +        if (CHARDEV_CLASS(klass)->internal) {
> >              continue;
> >          }
> > -
> >          backend_list = qmp_prepend_backend(backend_list,
> > -
> > ChardevBackendKind_lookup[c->kind]);
> > -        if (c->alias) {
> > -            backend_list = qmp_prepend_backend(backend_list, c->alias);
> > -        }
> > +                                           object_class_get_name(klass) +
> > 8);
> > +    }
> > +    for (i = 0; i < ARRAY_SIZE(chardev_alias_table); i++) {
> > +        backend_list = qmp_prepend_backend(backend_list,
> > +                                           chardev_alias_table[i].alias);
> 
> This changes the order of the list which is output to the user
> (shouldn't matter in practice, but may be worth mentioning in the commit
> message as intentionally safe).

ok

> 
> Again, I think that a little more refactoring to have the iteration over
> object_class_get_list() and chardev_alias_table[], coupled with a
> callback passed in by the client (with clients qemu_chr_new_from_opts
> and qmp_query_chardev_backends), will separate the iteration from the
> action, so that you don't always have to create a ChardevBackendInfoList
> that will just be thrown away.

not a trivial refactoring (various callbacks, passed to callback etc) but ok

> 
> >      }
> > +    g_slist_free(l);
> 
> Shouldn't this be g_slist_free(list)?

Yes my bad, same error with qapi_free_ChardevBackendInfoList()!

> 
> > @@ -4983,35 +4978,6 @@ void qemu_chr_set_feature(Chardev *chr,
> >      return set_bit(feature, chr->features);
> >  }
> >  
> > -static const ChardevClass *char_get_class(const char *driver, Error
> > **errp)
> > -{
> 
> This function is just moved earlier, which gets a little messy with the
> rest of the patch. Can you split the code motion into a separate patch
> for ease of review?  In fact, since it was just barely added in "[PATCH
> v2 20/20] chardev: qom-ify]" and that patch hasn't landed yet, can't you
> just amend that patch to hoist it early enough in the first place,
> rather than churning it?

It depends if I get to resend it or not. Paolo, you may drop it from the first series, so I resend it with this one?

> 
> 
> > @@ -5107,45 +5073,34 @@ void qemu_chr_cleanup(void)
> >  
> >  static void register_types(void)
> >  {
> > -    static const struct {
> > -        const CharDriver *driver;
> > -        const TypeInfo *type;
> > -    } chardevs[] = {
> > -        { &null_driver, &char_null_type_info },
> > -        { &socket_driver, &char_socket_type_info },
> > -        { &udp_driver, &char_udp_type_info },
> > -        { &ringbuf_driver, &char_ringbuf_type_info },
> > -        { &file_driver, &char_file_type_info },
> > -        { &stdio_driver, &char_stdio_type_info },
> > +    type_register_static(&char_type_info);
> > +#ifndef _WIN32
> > +    type_register_static(&char_fd_type_info);
> > +#else
> > +    type_register_static(&char_win_type_info);
> > +    type_register_static(&char_win_stdio_type_info);
> > +#endif
> 
> It's a bit weird that these are registered first,...
> 
> > +    type_register_static(&char_null_type_info);
> > +    type_register_static(&char_socket_type_info);
> > +    type_register_static(&char_udp_type_info);
> > +    type_register_static(&char_ringbuf_type_info);
> > +    type_register_static(&char_file_type_info);
> > +    type_register_static(&char_stdio_type_info);
> >  #ifdef HAVE_CHARDEV_SERIAL
> > -        { &serial_driver, &char_serial_type_info },
> > +    type_register_static(&char_serial_type_info);
> >  #endif
> >  #ifdef HAVE_CHARDEV_PARPORT
> > -        { &parallel_driver, &char_parallel_type_info },
> > +    type_register_static(&char_parallel_type_info);
> >  #endif
> >  #ifdef HAVE_CHARDEV_PTY
> > -        { &pty_driver, &char_pty_type_info },
> > +    type_register_static(&char_pty_type_info);
> >  #endif
> >  #ifdef _WIN32
> > -        { &console_driver, &char_console_type_info },
> > +    type_register_static(&char_console_type_info);
> 
> Any reason we can't consolidate the _WIN32 ifdefs into one place?

we could, but this is going away later in this series

> 
> >  #endif
> > -        { &pipe_driver, &char_pipe_type_info },
> > -        { &mux_driver, &char_mux_type_info },
> > -        { &memory_driver, &char_memory_type_info }
> > -    };
> > -    int i;
> > -
> > -    type_register_static(&char_type_info);
> > -#ifndef _WIN32
> > -    type_register_static(&char_fd_type_info);
> > -#else
> > -    type_register_static(&char_win_type_info);
> > -    type_register_static(&char_win_stdio_type_info);
> > -#endif
> 
> ...when they used to be last; but I don't think it hurts.

It doesn't, and it is spread later in the series, I wouldn't bother.

> 
> > -    for (i = 0; i < ARRAY_SIZE(chardevs); i++) {
> > -        type_register_static(chardevs[i].type);
> > -        register_char_driver(chardevs[i].driver);
> > -    }
> > +    type_register_static(&char_pipe_type_info);
> > +    type_register_static(&char_mux_type_info);
> > +    type_register_static(&char_memory_type_info);
> >  
> >      /* this must be done after machine init, since we register FEs with
> >      muxes
> >       * as part of realize functions like serial_isa_realizefn when
> >       -nographic
> > diff --git a/spice-qemu-char.c b/spice-qemu-char.c
> 
> Enough bugs that I'll want to see a v2, but it's headed in the right
> direction.

thanks, I'll wait for Paolo to take the first series before sending v2. Feel free to continue review of v1 for the remaining patches.

> 
> --
> Eric Blake   eblake redhat com    +1-919-301-3266
> Libvirt virtualization library http://libvirt.org
> 
> 

Re: [Qemu-devel] [PATCH 17/40] char: rename remaining CharDriver to Chardev

[Eric Blake]

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On 01/11/2017 11:29 AM, Marc-André Lureau wrote:
> CharDriver no longer exists, it has been replaced with Chardev.
> 
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---
>  include/sysemu/char.h | 40 ++++++++++++++++++++--------------------
>  qemu-char.c           | 12 ++++++------
>  2 files changed, 26 insertions(+), 26 deletions(-)
> 

> +++ b/qemu-char.c
> @@ -3171,13 +3171,13 @@ typedef struct {
>      Chardev *chr;
>      char buf[12];
>      size_t buflen;
> -} TCPCharDriverTelnetInit;
> +} TCPChardevTelnetInit;
>  
>  static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc,
>                                         GIOCondition cond G_GNUC_UNUSED,
>                                         gpointer user_data)
>  {
> -    TCPCharDriverTelnetInit *init = user_data;
> +    TCPChardevTelnetInit *init = user_data;
>      ssize_t ret;
>  
>      ret = qio_channel_write(ioc, init->buf, init->buflen, NULL);
> @@ -3204,8 +3204,8 @@ static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc,
>  static void tcp_chr_telnet_init(Chardev *chr)
>  {
>      SocketChardev *s = SOCKET_CHARDEV(chr);
> -    TCPCharDriverTelnetInit *init =
> -        g_new0(TCPCharDriverTelnetInit, 1);
> +    TCPChardevTelnetInit *init =
> +        g_new0(TCPChardevTelnetInit, 1);

This would fit within 80 columns on one line; but I'm also okay if you
don't bother with those sorts of cleanups.

Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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Re: [Qemu-devel] [PATCH 18/40] char: remove class kind field

[Eric Blake]

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On 01/11/2017 11:29 AM, Marc-André Lureau wrote:
> The class kind is necessary to lookup the chardev name in
> qmp_chardev_add() after calling qemu_chr_new_from_opts() and to set
> the appropriate ChardevBackend (mainly to free the right
> fields).
> 
> qemu_chr_new_from_opts() can be changed to use a non-qmp function
> using the chardev class typename. Introduce qemu_chardev_add() to be
> called from qemu_chr_new_from_opts() and remove the class chardev kind
> field. Set the backend->type in the parse callback (when non-common
> fields are added).
> 
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---

>  
> +static Chardev *qemu_chardev_add(const char *id, const char *typename,
> +                                 ChardevBackend *backend, Error **errp)
> +{
> +    Chardev *chr;
> +
> +    chr = qemu_chr_find(id);
> +    if (chr) {
> +        error_setg(errp, "Chardev '%s' already exists", id);
> +        return NULL;
> +    }
> +
> +    chr = qemu_chardev_new(id, typename, backend, errp);
> +    if (!chr) {
> +        return NULL;
> +    }
> +
> +    QTAILQ_INSERT_TAIL(&chardevs, chr, next);
> +    return chr;
> +}
> +

This part seems okay.

> @@ -4222,22 +4235,22 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts,
>  
>      cc = char_get_class(name, errp);
>      if (cc == NULL) {
> -        goto err;
> +        return NULL;
>      }
>  
>      backend = g_new0(ChardevBackend, 1);
> +    backend->type = CHARDEV_BACKEND_KIND_NULL;
>  
>      if (qemu_opt_get_bool(opts, "mux", 0)) {
>          bid = g_strdup_printf("%s-base", id);
>      }
>  
>      chr = NULL;
> -    backend->type = cc->kind;

I'm not sure I follow this hunk - we used to set backend->type
dynamically and now it is forced to KIND_NULL.  Is the point that we
don't need to set backend->type here because the later call to
qemu_chardev_add()...

> @@ -4245,37 +4258,33 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts,
>          backend->u.null.data = ccom; /* Any ChardevCommon member would work */
>      }
>  
> -    ret = qmp_chardev_add(bid ? bid : id, backend, errp);
> -    if (!ret) {
> -        goto qapi_out;
> +    chr = qemu_chardev_add(bid ? bid : id,
> +                           object_class_get_name(OBJECT_CLASS(cc)),
> +                           backend, errp);

...now passes the Object type which can be used to derive the same same
information?  In that case, was the assignment to backend->type =
KIND_NULL dead?

> +    if (chr == NULL) {
> +        goto out;
>      }
>  
>      if (bid) {
> +        Chardev *mux;
>          qapi_free_ChardevBackend(backend);
> -        qapi_free_ChardevReturn(ret);
>          backend = g_new0(ChardevBackend, 1);
> -        backend->u.mux.data = g_new0(ChardevMux, 1);
>          backend->type = CHARDEV_BACKEND_KIND_MUX;
> +        backend->u.mux.data = g_new0(ChardevMux, 1);

Why the churn on the assignment to backend->u.mux.data?

>          backend->u.mux.data->chardev = g_strdup(bid);
> -        ret = qmp_chardev_add(id, backend, errp);
> -        if (!ret) {
> -            chr = qemu_chr_find(bid);
> +        mux = qemu_chardev_add(id, TYPE_CHARDEV_MUX, backend, errp);
> +        if (mux == NULL) {
>              qemu_chr_delete(chr);
>              chr = NULL;
> -            goto qapi_out;
> +            goto out;
>          }
> +        chr = mux;
>      }
>  
> -    chr = qemu_chr_find(id);
> -
> -qapi_out:
> +out:
>      qapi_free_ChardevBackend(backend);
> -    qapi_free_ChardevReturn(ret);
>      g_free(bid);
>      return chr;
> -
> -err:
> -    return NULL;
>  }
>  

> @@ -5010,24 +5014,18 @@ Chardev *qemu_chardev_new(const char *id, const char *typename,
>  ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
>                                 Error **errp)
>  {
> -    const ChardevClass *cc;
>      ChardevReturn *ret;
> +    const ChardevClass *cc;

Why the churn on this declaration?

>      Chardev *chr;
>  
> -    chr = qemu_chr_find(id);
> -    if (chr) {
> -        error_setg(errp, "Chardev '%s' already exists", id);
> -        return NULL;
> -    }
> -
>      cc = char_get_class(ChardevBackendKind_lookup[backend->type], errp);
> -    if (!cc) {
> +    if (cc == NULL) {

Why the churn on this conditional?

>          return NULL;
>      }
>  
> -    chr = qemu_chardev_new(id, object_class_get_name(OBJECT_CLASS(cc)),
> +    chr = qemu_chardev_add(id, object_class_get_name(OBJECT_CLASS(cc)),
>                             backend, errp);
> -    if (!chr) {
> +    if (chr == NULL) {

and again


-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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Re: [Qemu-devel] [PATCH 19/40] char: move to chardev/

[Eric Blake]

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On 01/11/2017 11:29 AM, Marc-André Lureau wrote:
> The following commits will split char.c in several files. Let's put them
> in a subdirectory.
> 
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---
>  qemu-char.c => chardev/char.c | 0

Yay - one less file in the top level :)

>  MAINTAINERS                   | 2 +-
>  Makefile.objs                 | 2 +-
>  chardev/Makefile.objs         | 1 +
>  tests/Makefile.include        | 6 +++---
>  5 files changed, 6 insertions(+), 5 deletions(-)
>  rename qemu-char.c => chardev/char.c (100%)
>  create mode 100644 chardev/Makefile.objs
> 

> +++ b/tests/Makefile.include
> @@ -9,7 +9,7 @@ SYSEMU_TARGET_LIST := $(subst -softmmu.mak,,$(notdir \
>  check-unit-y = tests/check-qdict$(EXESUF)
>  gcov-files-check-qdict-y = qobject/qdict.c
>  check-unit-y += tests/test-char$(EXESUF)
> -gcov-files-check-qdict-y = qemu-char.c
> +gcov-files-check-qdict-y = chardev/char.c
>  check-unit-y += tests/check-qfloat$(EXESUF)
>  gcov-files-check-qfloat-y = qobject/qfloat.c
>  check-unit-y += tests/check-qint$(EXESUF)
> @@ -489,7 +489,7 @@ tests/check-qjson$(EXESUF): tests/check-qjson.o $(test-util-obj-y)
>  tests/check-qom-interface$(EXESUF): tests/check-qom-interface.o $(test-qom-obj-y)
>  tests/check-qom-proplist$(EXESUF): tests/check-qom-proplist.o $(test-qom-obj-y)
>  
> -tests/test-char$(EXESUF): tests/test-char.o qemu-char.o qemu-timer.o $(test-util-obj-y) $(qtest-obj-y) $(test-block-obj-y)
> +tests/test-char$(EXESUF): tests/test-char.o chardev/char.o qemu-timer.o $(test-util-obj-y) $(qtest-obj-y) $(test-block-obj-y)

Pre-existing so you just kept it, but maybe we should use \ line
wrapping to avoid long lines.

With or without wrapping,
Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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Re: [Qemu-devel] [PATCH 20/40] char: create chardev-obj-y

[Eric Blake]

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On 01/11/2017 11:29 AM, Marc-André Lureau wrote:
> This will help to split char.c in several units without having to
> reference them all everywhere. This is useful in particular for tests.
> 
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---

> @@ -221,7 +222,7 @@ subdir-dtc:dtc/libfdt dtc/tests
>  dtc/%:
>  	mkdir -p $@
>  
> -$(SUBDIR_RULES): libqemuutil.a libqemustub.a $(common-obj-y) $(qom-obj-y) $(crypto-aes-obj-$(CONFIG_USER_ONLY))
> +$(SUBDIR_RULES): libqemuutil.a libqemustub.a $(common-obj-y) $(chardev-obj-y) $(qom-obj-y) $(crypto-aes-obj-$(CONFIG_USER_ONLY))

Again, splitting long lines with \ would be nice, but not a necessity.

>  
>  ROMSUBDIR_RULES=$(patsubst %,romsubdir-%, $(ROMS))
>  # Only keep -O and -g cflags
> diff --git a/Makefile.objs b/Makefile.objs
> index cad4c54740..7985d21841 100644
> --- a/Makefile.objs
> +++ b/Makefile.objs
> @@ -51,7 +51,7 @@ common-obj-$(CONFIG_POSIX) += os-posix.o
>  common-obj-$(CONFIG_LINUX) += fsdev/
>  
>  common-obj-y += migration/
> -common-obj-y += chardev/ #aio.o
> +common-obj-y += #aio.o

The fact that aio.o is commented is unrelated to your patch, but now
that this line is a comment only, can we delete it?

>  common-obj-y += page_cache.o

Or maybe merge it with this line, so it doesn't look quite as odd?

Nothing major, so
Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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Re: [Qemu-devel] [PATCH 21/40] char: make null_chr_write() the default method

[Eric Blake]

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On 01/11/2017 11:29 AM, Marc-André Lureau wrote:
> All chardev must implement chr_write(), but parallel and null chardev
> both use null_chr_write(). Move it to the base class, so we don't need
> to export the function when splitting the chardev in respective files.
> 
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---
>  chardev/char.c | 21 +++++++++++++--------
>  1 file changed, 13 insertions(+), 8 deletions(-)
> 

Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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Re: [Qemu-devel] [PATCH 22/40] char: move null chardev to its own file

[Eric Blake]

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On 01/11/2017 11:29 AM, Marc-André Lureau wrote:
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---
>  chardev/char-null.c   | 31 +++++++++++++++++++++++++++++++
>  chardev/char.c        | 23 -----------------------
>  chardev/Makefile.objs |  1 +
>  3 files changed, 32 insertions(+), 23 deletions(-)
>  create mode 100644 chardev/char-null.c
> 
> diff --git a/chardev/char-null.c b/chardev/char-null.c
> new file mode 100644
> index 0000000000..18a49f5802
> --- /dev/null
> +++ b/chardev/char-null.c
> @@ -0,0 +1,31 @@
> +#include "qemu/osdep.h"
> +#include "sysemu/char.h"

No copyright blurb? You should copy the header of chardev/char.c (since
that's what you're splitting off of).

Otherwise looks okay.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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Re: [Qemu-devel] [PATCH 23/40] char: move mux to its own file

[Eric Blake]

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On 01/11/2017 11:29 AM, Marc-André Lureau wrote:
> A mechanical move, except that qemu_chr_write_all() needs to be declared
> in char.h header to be used from chardev unit files.
> 
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---

> +++ b/chardev/char-mux.h
> @@ -0,0 +1,40 @@
> +#ifndef CHAR_MUX_H
> +#define CHAR_MUX_H

Again, missing copyright blurbs. You'll need to respin to get that
right, but I'll quit pointing it out.

> +
> +#include "sysemu/char.h"
> +
> +extern bool muxes_realized;
> +
> +#define MAX_MUX 4
> +#define MUX_BUFFER_SIZE 32 /* Must be a power of 2.  */
> +#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
> +typedef struct MuxChardev {
> +    Chardev parent;
> +    CharBackend *backends[MAX_MUX];
> +    CharBackend chr;
> +    int focus;
> +    int mux_cnt;
> +    int term_got_escape;
> +    int max_size;
> +    /* Intermediate input buffer allows to catch escape sequences even if the

s/allows to catch/catches/

Dunno if cleanups like that should be mixed with code motion, or done
separately.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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Re: [Qemu-devel] [PATCH 25/40] char: rename and move to header CHR_READ_BUF_LEN

[Eric Blake]

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On 01/11/2017 11:29 AM, Marc-André Lureau wrote:
> This define is used by several character devices, place it in char
> common header.
> 
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---
>  include/sysemu/char.h |  1 +
>  chardev/char.c        | 13 ++++++-------
>  2 files changed, 7 insertions(+), 7 deletions(-)
> 

Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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Re: [Qemu-devel] [PATCH 24/40] char: move ringbuf/memory to its own file

[Eric Blake]

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On 01/11/2017 11:29 AM, Marc-André Lureau wrote:
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---
>  chardev/char-ringbuf.c | 226 +++++++++++++++++++++++++++++++++++++++++++++++++
>  chardev/char.c         | 218 -----------------------------------------------
>  chardev/Makefile.objs  |   1 +
>  3 files changed, 227 insertions(+), 218 deletions(-)
>  create mode 100644 chardev/char-ringbuf.c
> 

Looks mechanical, same story about copyright blurb.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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Re: [Qemu-devel] [PATCH 26/40] char: remove unused READ_RETRIES

[Eric Blake]

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On 01/11/2017 11:29 AM, Marc-André Lureau wrote:
> Curiously unused since its introduction in commit 7b0bfdf52d69.
> 
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---
>  chardev/char.c | 1 -
>  1 file changed, 1 deletion(-)

Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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Re: [Qemu-devel] [PATCH 27/40] char: move QIOChannel-related in char-io.h

[Eric Blake]

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On 01/11/2017 11:29 AM, Marc-André Lureau wrote:

Grammar in subject is a bit terse; maybe:

char: move QIOChannel-related stuff to char-io.h

> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---
>  chardev/char-io.h     |  24 +++++++
>  chardev/char-io.c     | 168 ++++++++++++++++++++++++++++++++++++++++++++++++
>  chardev/char.c        | 174 +-------------------------------------------------
>  chardev/Makefile.objs |   1 +
>  4 files changed, 194 insertions(+), 173 deletions(-)
>  create mode 100644 chardev/char-io.h
>  create mode 100644 chardev/char-io.c
> 
> diff --git a/chardev/char-io.h b/chardev/char-io.h
> new file mode 100644
> index 0000000000..ea559fd124
> --- /dev/null
> +++ b/chardev/char-io.h
> @@ -0,0 +1,24 @@
> +#ifndef CHAR_IO_H
> +#define CHAR_IO_H

Must... resist... the temptation to repeat myself!

> +
> +#include "qemu/osdep.h"

.h files should NOT include osdep.h; since all .c files included it
before any other .h file, then all things in osdep.h are already in
scope at the point the .h file starts.


> +static gboolean io_watch_poll_prepare(GSource *source,
> +                                      gint *timeout_)
> +{

Why the weird spelling of timeout_ ?  Maybe timeout_unused is better?


> +++ b/chardev/char.c

> -static gboolean io_watch_poll_prepare(GSource *source,
> -                                      gint *timeout_)

Then again, it's code motion.  Again, up to you if you want to tweak
style things during code motion, or split them into a general cleanup
patch separately.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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Re: [Qemu-devel] [PATCH 18/40] char: remove class kind field

[Marc-André Lureau]

Hi

----- Original Message -----
> On 01/11/2017 11:29 AM, Marc-André Lureau wrote:
> > The class kind is necessary to lookup the chardev name in
> > qmp_chardev_add() after calling qemu_chr_new_from_opts() and to set
> > the appropriate ChardevBackend (mainly to free the right
> > fields).
> > 
> > qemu_chr_new_from_opts() can be changed to use a non-qmp function
> > using the chardev class typename. Introduce qemu_chardev_add() to be
> > called from qemu_chr_new_from_opts() and remove the class chardev kind
> > field. Set the backend->type in the parse callback (when non-common
> > fields are added).
> > 
> > Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> > ---
> 
> >  
> > +static Chardev *qemu_chardev_add(const char *id, const char *typename,
> > +                                 ChardevBackend *backend, Error **errp)
> > +{
> > +    Chardev *chr;
> > +
> > +    chr = qemu_chr_find(id);
> > +    if (chr) {
> > +        error_setg(errp, "Chardev '%s' already exists", id);
> > +        return NULL;
> > +    }
> > +
> > +    chr = qemu_chardev_new(id, typename, backend, errp);
> > +    if (!chr) {
> > +        return NULL;
> > +    }
> > +
> > +    QTAILQ_INSERT_TAIL(&chardevs, chr, next);
> > +    return chr;
> > +}
> > +
> 
> This part seems okay.
> 
> > @@ -4222,22 +4235,22 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts,
> >  
> >      cc = char_get_class(name, errp);
> >      if (cc == NULL) {
> > -        goto err;
> > +        return NULL;
> >      }
> >  
> >      backend = g_new0(ChardevBackend, 1);
> > +    backend->type = CHARDEV_BACKEND_KIND_NULL;
> >  
> >      if (qemu_opt_get_bool(opts, "mux", 0)) {
> >          bid = g_strdup_printf("%s-base", id);
> >      }
> >  
> >      chr = NULL;
> > -    backend->type = cc->kind;
> 
> I'm not sure I follow this hunk - we used to set backend->type
> dynamically and now it is forced to KIND_NULL.  Is the point that we
> don't need to set backend->type here because the later call to
> qemu_chardev_add()...

I tried to explain some of the reasons in the commit message.

We need backend->type to be set correctly for the qapi_free_ChardevBackend() to work. The kind field used to be on a class member, but we try to get rid of it. So we move that information to _parse(), and change the backend type appropriately there.

KIND_NULL is the common backend (sharing ChardevCommon).

> 
> > @@ -4245,37 +4258,33 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts,
> >          backend->u.null.data = ccom; /* Any ChardevCommon member would
> >          work */
> >      }
> >  
> > -    ret = qmp_chardev_add(bid ? bid : id, backend, errp);
> > -    if (!ret) {
> > -        goto qapi_out;
> > +    chr = qemu_chardev_add(bid ? bid : id,
> > +                           object_class_get_name(OBJECT_CLASS(cc)),
> > +                           backend, errp);
> 
> ...now passes the Object type which can be used to derive the same same
> information?  In that case, was the assignment to backend->type =
> KIND_NULL dead?

0 is KIND_FILE, which would lead to invalid free.
 
> > +    if (chr == NULL) {
> > +        goto out;
> >      }
> >  
> >      if (bid) {
> > +        Chardev *mux;
> >          qapi_free_ChardevBackend(backend);
> > -        qapi_free_ChardevReturn(ret);
> >          backend = g_new0(ChardevBackend, 1);
> > -        backend->u.mux.data = g_new0(ChardevMux, 1);
> >          backend->type = CHARDEV_BACKEND_KIND_MUX;
> > +        backend->u.mux.data = g_new0(ChardevMux, 1);
> 
> Why the churn on the assignment to backend->u.mux.data?

fixed

> 
> >          backend->u.mux.data->chardev = g_strdup(bid);
> > -        ret = qmp_chardev_add(id, backend, errp);
> > -        if (!ret) {
> > -            chr = qemu_chr_find(bid);
> > +        mux = qemu_chardev_add(id, TYPE_CHARDEV_MUX, backend, errp);
> > +        if (mux == NULL) {
> >              qemu_chr_delete(chr);
> >              chr = NULL;
> > -            goto qapi_out;
> > +            goto out;
> >          }
> > +        chr = mux;
> >      }
> >  
> > -    chr = qemu_chr_find(id);
> > -
> > -qapi_out:
> > +out:
> >      qapi_free_ChardevBackend(backend);
> > -    qapi_free_ChardevReturn(ret);
> >      g_free(bid);
> >      return chr;
> > -
> > -err:
> > -    return NULL;
> >  }
> >  
> 
> > @@ -5010,24 +5014,18 @@ Chardev *qemu_chardev_new(const char *id, const
> > char *typename,
> >  ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
> >                                 Error **errp)
> >  {
> > -    const ChardevClass *cc;
> >      ChardevReturn *ret;
> > +    const ChardevClass *cc;
> 
> Why the churn on this declaration?

sorry, too many rebases, conflicts.. fixed

> 
> >      Chardev *chr;
> >  
> > -    chr = qemu_chr_find(id);
> > -    if (chr) {
> > -        error_setg(errp, "Chardev '%s' already exists", id);
> > -        return NULL;
> > -    }
> > -
> >      cc = char_get_class(ChardevBackendKind_lookup[backend->type], errp);
> > -    if (!cc) {
> > +    if (cc == NULL) {
> 
> Why the churn on this conditional?
> 
> >          return NULL;
> >      }
> >  
> > -    chr = qemu_chardev_new(id, object_class_get_name(OBJECT_CLASS(cc)),
> > +    chr = qemu_chardev_add(id, object_class_get_name(OBJECT_CLASS(cc)),
> >                             backend, errp);
> > -    if (!chr) {
> > +    if (chr == NULL) {
> 
> and again
> 
> 
> --
> Eric Blake   eblake redhat com    +1-919-301-3266
> Libvirt virtualization library http://libvirt.org
> 
> 

Re: [Qemu-devel] [PATCH 27/40] char: move QIOChannel-related in char-io.h

[Marc-André Lureau]

Hi

----- Original Message -----
> On 01/11/2017 11:29 AM, Marc-André Lureau wrote:
> 
> Grammar in subject is a bit terse; maybe:
> 
> char: move QIOChannel-related stuff to char-io.h
> 
> > Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> > ---
> >  chardev/char-io.h     |  24 +++++++
> >  chardev/char-io.c     | 168
> >  ++++++++++++++++++++++++++++++++++++++++++++++++
> >  chardev/char.c        | 174
> >  +-------------------------------------------------
> >  chardev/Makefile.objs |   1 +
> >  4 files changed, 194 insertions(+), 173 deletions(-)
> >  create mode 100644 chardev/char-io.h
> >  create mode 100644 chardev/char-io.c
> > 
> > diff --git a/chardev/char-io.h b/chardev/char-io.h
> > new file mode 100644
> > index 0000000000..ea559fd124
> > --- /dev/null
> > +++ b/chardev/char-io.h
> > @@ -0,0 +1,24 @@
> > +#ifndef CHAR_IO_H
> > +#define CHAR_IO_H
> 
> Must... resist... the temptation to repeat myself!

Ok, I'll just copy the original copyright from qemu-char.c in all the files I created in the series.

> 
> > +
> > +#include "qemu/osdep.h"
> 
> .h files should NOT include osdep.h; since all .c files included it
> before any other .h file, then all things in osdep.h are already in
> scope at the point the .h file starts.

ok

> 
> 
> > +static gboolean io_watch_poll_prepare(GSource *source,
> > +                                      gint *timeout_)
> > +{
> 
> Why the weird spelling of timeout_ ?  Maybe timeout_unused is better?
> 
> 
> > +++ b/chardev/char.c
> 
> > -static gboolean io_watch_poll_prepare(GSource *source,
> > -                                      gint *timeout_)
> 
> Then again, it's code motion.  Again, up to you if you want to tweak
> style things during code motion, or split them into a general cleanup
> patch separately.

yeah, weird style, any idea why Anthony wrote it that way in commit 96c638477?

I guess I may just drop the _ during the move

Re: [Qemu-devel] [PATCH 29/40] char: move win chardev base class in its own file

[Eric Blake]

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On 01/11/2017 11:29 AM, Marc-André Lureau wrote:
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---
>  chardev/char-win.h    |  30 ++++++
>  chardev/char-win.c    | 242 +++++++++++++++++++++++++++++++++++++++++++++++
>  chardev/char.c        | 253 +-------------------------------------------------
>  chardev/Makefile.objs |   1 +
>  4 files changed, 276 insertions(+), 250 deletions(-)
>  create mode 100644 chardev/char-win.h
>  create mode 100644 chardev/char-win.c
> 

> +++ b/chardev/Makefile.objs
> @@ -4,3 +4,4 @@ chardev-obj-y += char-io.o
>  chardev-obj-y += char-mux.o
>  chardev-obj-y += char-null.o
>  chardev-obj-y += char-ringbuf.o
> +chardev-obj-$(CONFIG_WIN32) += char-win.o

This part is the neatest - trading #ifdefs in the code for conditionally
compiling an entire .c file.

I have not closely read 28-39, so I don't know if R-b is appropriate,
but they are all mechanical and the fact that it still compiles is good.
 So maybe we go with the weaker:
Acked-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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Re: [Qemu-devel] [PATCH 40/40] char: headers clean-up

[Eric Blake]

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On 01/11/2017 11:29 AM, Marc-André Lureau wrote:
> Those could probably be squashed with earlier patches, however I
> couldn't easily identify them, test them or check if there are still
> necessary on various platforms.
> 
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---

Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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Re: [Qemu-devel] [PATCH 39/40] char: move parallel chardev in its own file

[Eric Blake]

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On 01/11/2017 11:29 AM, Marc-André Lureau wrote:
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---
>  chardev/char-parallel.h |   9 ++
>  chardev/char-parallel.c | 293 ++++++++++++++++++++++++++++++++++++++++++++++++
>  chardev/char.c          | 288 +----------------------------------------------
>  chardev/Makefile.objs   |   1 +
>  4 files changed, 304 insertions(+), 287 deletions(-)
>  create mode 100644 chardev/char-parallel.h
>  create mode 100644 chardev/char-parallel.c
> 

> +++ b/chardev/char.c

> @@ -123,7 +109,6 @@ void qemu_chr_be_generic_open(Chardev *s)
>      qemu_chr_be_event(s, CHR_EVENT_OPENED);
>  }
>  
> -
>  /* Not reporting errors from writing to logfile, as logs are
>   * defined to be "best effort" only */
>  static void qemu_chr_fe_write_log(Chardev *s,

Spurious hunk?

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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