[Qemu-devel] [PULL 00/40] Error reporting patches for 2018-10-22

[Qemu-devel] [PULL 00/40] Error reporting patches for 2018-10-22

[Markus Armbruster]

The following changes since commit 1b7490446bf41f54130c2d495dd4c8768c8e1ce3:

  Merge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-3.1-pull-request' into staging (2018-10-19 11:20:05 +0100)

are available in the Git repository at:

  git://repo.or.cz/qemu/armbru.git tags/pull-error-2018-10-22

for you to fetch changes up to 80313fb53d8048882848b6f63daaeb29dc319765:

  error: Drop bogus "use error_setg() instead" admonitions (2018-10-19 15:47:09 +0200)

----------------------------------------------------------------
Error reporting patches for 2018-10-22

* Replace some unwise uses of error_report() & friends
* Print error when using incorrect backend for debugcon

----------------------------------------------------------------
Alberto Garcia (1):
      scripts: Remove check-qerror.sh

Fei Li (1):
      ui: Convert vnc_display_init(), init_keyboard_layout() to Error

Markus Armbruster (37):
      error: Fix use of error_prepend() with &error_fatal, &error_abort
      Use error_fatal to simplify obvious fatal errors (again)
      block: Use warn_report() & friends to report warnings
      cpus hw target: Use warn_report() & friends to report warnings
      vfio: Use warn_report() & friends to report warnings
      vfio: Clean up error reporting after previous commit
      char: Use error_printf() to print help and such
      9pfs: Fix CLI parsing crash on error
      pc: Fix machine property nvdimm-persistence error handling
      ioapic: Fix error handling in realize()
      smbios: Clean up error handling in smbios_add()
      migration: Fix !replay_can_snapshot() error handling
      l2tpv3: Improve -netdev/netdev_add/-net/... error reporting
      net/socket: Fix invalid socket type error handling
      numa: Fix QMP command set-numa-node error handling
      xen/pt: Fix incomplete conversion to realize()
      seccomp: Clean up error reporting in parse_sandbox()
      vl: Clean up error reporting in parse_add_fd()
      qom: Clean up error reporting in user_creatable_add_opts_foreach()
      vl: Clean up error reporting in chardev_init_func()
      vl: Clean up error reporting in machine_set_property()
      vl: Clean up error reporting in mon_init_func()
      vl: Clean up error reporting in parse_fw_cfg()
      vl: Clean up error reporting in device_init_func()
      ui/keymaps: Fix handling of erroneous include files
      vnc: Clean up error reporting in vnc_init_func()
      numa: Clean up error reporting in parse_numa()
      tpm: Clean up error reporting in tpm_init_tpmdev()
      spice: Clean up error reporting in add_channel()
      fsdev: Clean up error reporting in qemu_fsdev_add()
      vl: Assert drive_new() does not fail in default_drive()
      blockdev: Convert drive_new() to Error
      vl: Fix exit status for -drive format=help
      vl: Simplify call of parse_name()
      block: Clean up bdrv_img_create()'s error reporting
      vpc: Fail open on bad header checksum
      error: Drop bogus "use error_setg() instead" admonitions

Philippe Mathieu-Daudé (1):
      vl: Print error when using incorrect backend for debugcon

 block.c                                  |   9 +++-----
 block/iscsi.c                            |   2 +-
 block/qcow2.c                            |   4 ++--
 block/qed.c                              |   4 ++--
 block/rbd.c                              |   4 ++--
 block/sheepdog.c                         |   2 +-
 block/vpc.c                              |   8 ++++---
 blockdev.c                               |  27 +++++++++++------------
 chardev/char-pty.c                       |   2 +-
 chardev/char.c                           |   2 +-
 cpus.c                                   |   8 +++----
 device-hotplug.c                         |   5 ++++-
 fsdev/qemu-fsdev-dummy.c                 |   2 +-
 fsdev/qemu-fsdev.c                       |  12 +++++------
 fsdev/qemu-fsdev.h                       |   2 +-
 hw/9pfs/9p-handle.c                      |   6 ++++--
 hw/9pfs/9p-local.c                       |   4 ++--
 hw/9pfs/xen-9p-backend.c                 |   7 +++++-
 hw/display/cg3.c                         |   2 +-
 hw/display/tcx.c                         |   2 +-
 hw/i386/pc.c                             |   5 +++--
 hw/intc/ioapic.c                         |   8 +++----
 hw/intc/xics.c                           |  15 +++++++------
 hw/intc/xics_kvm.c                       |   7 +-----
 hw/misc/ivshmem.c                        |   4 ++--
 hw/net/virtio-net.c                      |   8 +++----
 hw/ppc/pnv_core.c                        |   4 ++--
 hw/ppc/spapr_pci.c                       |   7 +++---
 hw/smbios/smbios.c                       |  90 +++++++++++++++++++++++++++++++++++++++++++++++++++++------------------------
 hw/timer/aspeed_timer.c                  |   3 +--
 hw/usb/bus.c                             |   5 +++--
 hw/vfio/pci-quirks.c                     |   4 ++--
 hw/vfio/pci.c                            |  25 +++++++++++-----------
 hw/vfio/platform.c                       |   6 +++---
 hw/virtio/virtio-pci.c                   |   4 ++--
 hw/xen/xen_pt.c                          |   2 +-
 include/hw/vfio/vfio-common.h            |   3 +--
 include/qapi/error.h                     |  14 ++++++++++++
 include/qapi/qmp/qerror.h                |   6 +++---
 include/sysemu/blockdev.h                |   3 ++-
 include/sysemu/numa.h                    |   1 -
 include/sysemu/tpm.h                     |   2 +-
 include/ui/console.h                     |   2 +-
 migration/migration.c                    |  12 +++++------
 migration/savevm.c                       |   8 +++----
 net/l2tpv3.c                             |  25 +++++++++++-----------
 net/socket.c                             |   4 ++--
 numa.c                                   |  21 ++++++++++--------
 qemu-io.c                                |   8 +++----
 qemu-nbd.c                               |  14 ++++--------
 qemu-seccomp.c                           |  18 ++++++++--------
 qom/object_interfaces.c                  |   4 +---
 scripts/check-qerror.sh                  |  22 -------------------
 scripts/coccinelle/use-error_fatal.cocci |  20 ++++++++++++++++++
 stubs/tpm.c                              |   3 +--
 target/i386/cpu.c                        |  17 ++++++++-------
 target/ppc/translate_init.inc.c          |   4 ++--
 tests/qemu-iotests/049.out               |  12 ++++-------
 tpm.c                                    |  22 ++++++++-----------
 ui/curses.c                              |   6 +++---
 ui/keymaps.c                             |  40 +++++++++++++++++++++++------------
 ui/keymaps.h                             |   2 +-
 ui/sdl.c                                 |   6 +++---
 ui/spice-core.c                          |  13 ++++++------
 ui/vnc.c                                 |  19 +++++++++++------
 util/error.c                             |  13 ++++++++++++
 util/qemu-error.c                        |   5 -----
 vl.c                                     | 140 ++++++++++++++++++++++++++++++++++++++++++++++--------------------------------------------------------------------------
 68 files changed, 414 insertions(+), 386 deletions(-)
 delete mode 100755 scripts/check-qerror.sh
 create mode 100644 scripts/coccinelle/use-error_fatal.cocci

-- 
2.17.2

[Qemu-devel] [PULL 01/40] scripts: Remove check-qerror.sh

[Markus Armbruster]

From: Alberto Garcia <berto@igalia.com>

qerror.h contains leftovers from the now-defunct QError API.

There's only a handful of string macros left, and no one is supposed
to add anything else. The check-qerror.sh script was used to make sure
that all definitions on the qerror.c and qerror.h files were sorted
alphabetically. The former was removed three years ago, and the latter
is now in a different location, so the script doesn't even work (as
a matter of fact the alphabetical order was broken last time someone
added a macro -also in 2015- and no one seemed to notice).

There's no point in fixing this script so let's just remove it.
The rogue macro is also moved to its correct location.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-Id: <20181017151738.20299-1-berto@igalia.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 include/qapi/qmp/qerror.h |  6 +++---
 scripts/check-qerror.sh   | 22 ----------------------
 2 files changed, 3 insertions(+), 25 deletions(-)
 delete mode 100755 scripts/check-qerror.sh

diff --git a/include/qapi/qmp/qerror.h b/include/qapi/qmp/qerror.h
index 145571f618..7c76e24aa7 100644
--- a/include/qapi/qmp/qerror.h
+++ b/include/qapi/qmp/qerror.h
@@ -79,6 +79,9 @@
 #define QERR_QGA_COMMAND_FAILED \
     "Guest agent command failed, error was '%s'"
 
+#define QERR_REPLAY_NOT_SUPPORTED \
+    "Record/replay feature is not supported for '%s'"
+
 #define QERR_SET_PASSWD_FAILED \
     "Could not set password"
 
@@ -88,7 +91,4 @@
 #define QERR_UNSUPPORTED \
     "this feature or command is not currently supported"
 
-#define QERR_REPLAY_NOT_SUPPORTED \
-    "Record/replay feature is not supported for '%s'"
-
 #endif /* QERROR_H */
diff --git a/scripts/check-qerror.sh b/scripts/check-qerror.sh
deleted file mode 100755
index af7fbd5249..0000000000
--- a/scripts/check-qerror.sh
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/bin/sh
-# This script verifies that qerror definitions and table entries are
-# alphabetically ordered.
-
-check_order() {
-  errmsg=$1
-  shift
-
-  # sort -C verifies order but does not print a message.  sort -c does print a
-  # message.  These options are both in POSIX.
-  if ! "$@" | sort -C; then
-    echo "$errmsg"
-    "$@" | sort -c
-    exit 1
-  fi
-  return 0
-}
-
-check_order 'Definitions in qerror.h must be in alphabetical order:' \
-            grep '^#define QERR_' qerror.h
-check_order 'Entries in qerror.c:qerror_table must be in alphabetical order:' \
-            sed -n '/^static.*qerror_table\[\]/,/^};/s/QERR_/&/gp' qerror.c
-- 
2.17.2

[Qemu-devel] [PULL 02/40] vl: Print error when using incorrect backend for debugcon

[Markus Armbruster]

From: Philippe Mathieu-Daudé <philmd@redhat.com>

When using an incorrect backend for the debugcon, QEMU exits silently
without any error indication, which is confusing.
Add a message that the character backend is invalid.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20181011171254.32428-1-philmd@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 vl.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/vl.c b/vl.c
index 4e25c78bff..61305b5891 100644
--- a/vl.c
+++ b/vl.c
@@ -2466,6 +2466,7 @@ static int debugcon_parse(const char *devname)
     QemuOpts *opts;
 
     if (!qemu_chr_new_mux_mon("debugcon", devname)) {
+        error_report("invalid character backend '%s'", devname);
         exit(1);
     }
     opts = qemu_opts_create(qemu_find_opts("device"), "debugcon", 1, NULL);
-- 
2.17.2

[Qemu-devel] [PULL 03/40] error: Fix use of error_prepend() with &error_fatal, &error_abort

[Markus Armbruster]

>From include/qapi/error.h:

  * Pass an existing error to the caller with the message modified:
  *     error_propagate(errp, err);
  *     error_prepend(errp, "Could not frobnicate '%s': ", name);

Fei Li pointed out that doing error_propagate() first doesn't work
well when @errp is &error_fatal or &error_abort: the error_prepend()
is never reached.

Since I doubt fixing the documentation will stop people from getting
it wrong, introduce error_propagate_prepend(), in the hope that it
lures people away from using its constituents in the wrong order.
Update the instructions in error.h accordingly.

Convert existing error_prepend() next to error_propagate to
error_propagate_prepend().  If any of these get reached with
&error_fatal or &error_abort, the error messages improve.  I didn't
check whether that's the case anywhere.

Cc: Fei Li <fli@suse.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20181017082702.5581-2-armbru@redhat.com>
---
 block.c                 |  6 +++---
 block/qcow2.c           |  4 ++--
 block/qed.c             |  4 ++--
 hw/9pfs/9p-local.c      |  4 ++--
 hw/intc/xics.c          | 15 +++++++++------
 hw/ppc/pnv_core.c       |  4 ++--
 hw/ppc/spapr_pci.c      |  7 +++----
 hw/timer/aspeed_timer.c |  3 +--
 hw/usb/bus.c            |  5 +++--
 hw/vfio/pci.c           |  3 +--
 include/qapi/error.h    | 14 ++++++++++++++
 migration/migration.c   | 12 ++++++------
 util/error.c            | 13 +++++++++++++
 13 files changed, 61 insertions(+), 33 deletions(-)

diff --git a/block.c b/block.c
index 7710b399a3..5d51419d21 100644
--- a/block.c
+++ b/block.c
@@ -4697,9 +4697,9 @@ bool bdrv_op_is_blocked(BlockDriverState *bs, BlockOpType op, Error **errp)
     assert((int) op >= 0 && op < BLOCK_OP_TYPE_MAX);
     if (!QLIST_EMPTY(&bs->op_blockers[op])) {
         blocker = QLIST_FIRST(&bs->op_blockers[op]);
-        error_propagate(errp, error_copy(blocker->reason));
-        error_prepend(errp, "Node '%s' is busy: ",
-                      bdrv_get_device_or_node_name(bs));
+        error_propagate_prepend(errp, error_copy(blocker->reason),
+                                "Node '%s' is busy: ",
+                                bdrv_get_device_or_node_name(bs));
         return true;
     }
     return false;
diff --git a/block/qcow2.c b/block/qcow2.c
index 7277feda13..4f8d2fa7bd 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -2208,8 +2208,8 @@ static void coroutine_fn qcow2_co_invalidate_cache(BlockDriverState *bs,
     qemu_co_mutex_unlock(&s->lock);
     qobject_unref(options);
     if (local_err) {
-        error_propagate(errp, local_err);
-        error_prepend(errp, "Could not reopen qcow2 layer: ");
+        error_propagate_prepend(errp, local_err,
+                                "Could not reopen qcow2 layer: ");
         bs->drv = NULL;
         return;
     } else if (ret < 0) {
diff --git a/block/qed.c b/block/qed.c
index 689ea9d4d5..9377c0b7ad 100644
--- a/block/qed.c
+++ b/block/qed.c
@@ -1606,8 +1606,8 @@ static void coroutine_fn bdrv_qed_co_invalidate_cache(BlockDriverState *bs,
     ret = bdrv_qed_do_open(bs, NULL, bs->open_flags, &local_err);
     qemu_co_mutex_unlock(&s->table_lock);
     if (local_err) {
-        error_propagate(errp, local_err);
-        error_prepend(errp, "Could not reopen qed layer: ");
+        error_propagate_prepend(errp, local_err,
+                                "Could not reopen qed layer: ");
         return;
     } else if (ret < 0) {
         error_setg_errno(errp, -ret, "Could not reopen qed layer");
diff --git a/hw/9pfs/9p-local.c b/hw/9pfs/9p-local.c
index c30f4f26bd..08e673a79c 100644
--- a/hw/9pfs/9p-local.c
+++ b/hw/9pfs/9p-local.c
@@ -1509,8 +1509,8 @@ static int local_parse_opts(QemuOpts *opts, FsDriverEntry *fse, Error **errp)
 
     fsdev_throttle_parse_opts(opts, &fse->fst, &local_err);
     if (local_err) {
-        error_propagate(errp, local_err);
-        error_prepend(errp, "invalid throttle configuration: ");
+        error_propagate_prepend(errp, local_err,
+                                "invalid throttle configuration: ");
         return -1;
     }
 
diff --git a/hw/intc/xics.c b/hw/intc/xics.c
index c90c893228..406efee064 100644
--- a/hw/intc/xics.c
+++ b/hw/intc/xics.c
@@ -320,8 +320,9 @@ static void icp_realize(DeviceState *dev, Error **errp)
 
     obj = object_property_get_link(OBJECT(dev), ICP_PROP_XICS, &err);
     if (!obj) {
-        error_propagate(errp, err);
-        error_prepend(errp, "required link '" ICP_PROP_XICS "' not found: ");
+        error_propagate_prepend(errp, err,
+                                "required link '" ICP_PROP_XICS
+                                "' not found: ");
         return;
     }
 
@@ -329,8 +330,9 @@ static void icp_realize(DeviceState *dev, Error **errp)
 
     obj = object_property_get_link(OBJECT(dev), ICP_PROP_CPU, &err);
     if (!obj) {
-        error_propagate(errp, err);
-        error_prepend(errp, "required link '" ICP_PROP_CPU "' not found: ");
+        error_propagate_prepend(errp, err,
+                                "required link '" ICP_PROP_CPU
+                                "' not found: ");
         return;
     }
 
@@ -624,8 +626,9 @@ static void ics_base_realize(DeviceState *dev, Error **errp)
 
     obj = object_property_get_link(OBJECT(dev), ICS_PROP_XICS, &err);
     if (!obj) {
-        error_propagate(errp, err);
-        error_prepend(errp, "required link '" ICS_PROP_XICS "' not found: ");
+        error_propagate_prepend(errp, err,
+                                "required link '" ICS_PROP_XICS
+                                "' not found: ");
         return;
     }
     ics->xics = XICS_FABRIC(obj);
diff --git a/hw/ppc/pnv_core.c b/hw/ppc/pnv_core.c
index 9750464bf4..ad1bcc7990 100644
--- a/hw/ppc/pnv_core.c
+++ b/hw/ppc/pnv_core.c
@@ -148,8 +148,8 @@ static void pnv_core_realize(DeviceState *dev, Error **errp)
 
     chip = object_property_get_link(OBJECT(dev), "chip", &local_err);
     if (!chip) {
-        error_propagate(errp, local_err);
-        error_prepend(errp, "required link 'chip' not found: ");
+        error_propagate_prepend(errp, local_err,
+                                "required link 'chip' not found: ");
         return;
     }
 
diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
index c2271e6ed4..58afa46204 100644
--- a/hw/ppc/spapr_pci.c
+++ b/hw/ppc/spapr_pci.c
@@ -1724,16 +1724,15 @@ static void spapr_phb_realize(DeviceState *dev, Error **errp)
         if (smc->legacy_irq_allocation) {
             irq = spapr_irq_findone(spapr, &local_err);
             if (local_err) {
-                error_propagate(errp, local_err);
-                error_prepend(errp, "can't allocate LSIs: ");
+                error_propagate_prepend(errp, local_err,
+                                        "can't allocate LSIs: ");
                 return;
             }
         }
 
         spapr_irq_claim(spapr, irq, true, &local_err);
         if (local_err) {
-            error_propagate(errp, local_err);
-            error_prepend(errp, "can't allocate LSIs: ");
+            error_propagate_prepend(errp, local_err, "can't allocate LSIs: ");
             return;
         }
 
diff --git a/hw/timer/aspeed_timer.c b/hw/timer/aspeed_timer.c
index 54b400b94a..5c786e5128 100644
--- a/hw/timer/aspeed_timer.c
+++ b/hw/timer/aspeed_timer.c
@@ -454,8 +454,7 @@ static void aspeed_timer_realize(DeviceState *dev, Error **errp)
 
     obj = object_property_get_link(OBJECT(dev), "scu", &err);
     if (!obj) {
-        error_propagate(errp, err);
-        error_prepend(errp, "required link 'scu' not found: ");
+        error_propagate_prepend(errp, err, "required link 'scu' not found: ");
         return;
     }
     s->scu = ASPEED_SCU(obj);
diff --git a/hw/usb/bus.c b/hw/usb/bus.c
index 11f7720d71..bf796d67e6 100644
--- a/hw/usb/bus.c
+++ b/hw/usb/bus.c
@@ -340,8 +340,9 @@ static USBDevice *usb_try_create_simple(USBBus *bus, const char *name,
     }
     object_property_set_bool(OBJECT(dev), true, "realized", &err);
     if (err) {
-        error_propagate(errp, err);
-        error_prepend(errp, "Failed to initialize USB device '%s': ", name);
+        error_propagate_prepend(errp, err,
+                                "Failed to initialize USB device '%s': ",
+                                name);
         return NULL;
     }
     return dev;
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 8b73582d51..4404c28360 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -1283,8 +1283,7 @@ static int vfio_msi_setup(VFIOPCIDevice *vdev, int pos, Error **errp)
         if (ret == -ENOTSUP) {
             return 0;
         }
-        error_prepend(&err, "msi_init failed: ");
-        error_propagate(errp, err);
+        error_propagate_prepend(errp, err, "msi_init failed: ");
         return ret;
     }
     vdev->msi_cap_size = 0xa + (msi_maskbit ? 0xa : 0) + (msi_64bit ? 0x4 : 0);
diff --git a/include/qapi/error.h b/include/qapi/error.h
index bcb86a79f5..51b63dd4b5 100644
--- a/include/qapi/error.h
+++ b/include/qapi/error.h
@@ -52,8 +52,12 @@
  * where Error **errp is a parameter, by convention the last one.
  *
  * Pass an existing error to the caller with the message modified:
+ *     error_propagate_prepend(errp, err);
+ *
+ * Avoid
  *     error_propagate(errp, err);
  *     error_prepend(errp, "Could not frobnicate '%s': ", name);
+ * because this fails to prepend when @errp is &error_fatal.
  *
  * Create a new error and pass it to the caller:
  *     error_setg(errp, "situation normal, all fouled up");
@@ -215,6 +219,16 @@ void error_setg_win32_internal(Error **errp,
  */
 void error_propagate(Error **dst_errp, Error *local_err);
 
+
+/*
+ * Propagate error object (if any) with some text prepended.
+ * Behaves like
+ *     error_prepend(&local_err, fmt, ...);
+ *     error_propagate(dst_errp, local_err);
+ */
+void error_propagate_prepend(Error **dst_errp, Error *local_err,
+                             const char *fmt, ...);
+
 /*
  * Prepend some text to @errp's human-readable error message.
  * The text is made by formatting @fmt, @ap like vprintf().
diff --git a/migration/migration.c b/migration/migration.c
index d6ae879dc8..f0f299a773 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -1546,9 +1546,9 @@ static GSList *migration_blockers;
 int migrate_add_blocker(Error *reason, Error **errp)
 {
     if (migrate_get_current()->only_migratable) {
-        error_propagate(errp, error_copy(reason));
-        error_prepend(errp, "disallowing migration blocker "
-                          "(--only_migratable) for: ");
+        error_propagate_prepend(errp, error_copy(reason),
+                                "disallowing migration blocker "
+                                "(--only_migratable) for: ");
         return -EACCES;
     }
 
@@ -1557,9 +1557,9 @@ int migrate_add_blocker(Error *reason, Error **errp)
         return 0;
     }
 
-    error_propagate(errp, error_copy(reason));
-    error_prepend(errp, "disallowing migration blocker (migration in "
-                      "progress) for: ");
+    error_propagate_prepend(errp, error_copy(reason),
+                            "disallowing migration blocker "
+                            "(migration in progress) for: ");
     return -EBUSY;
 }
 
diff --git a/util/error.c b/util/error.c
index 3efdd69162..b5ccbd8eac 100644
--- a/util/error.c
+++ b/util/error.c
@@ -292,3 +292,16 @@ void error_propagate(Error **dst_errp, Error *local_err)
         error_free(local_err);
     }
 }
+
+void error_propagate_prepend(Error **dst_errp, Error *err,
+                             const char *fmt, ...)
+{
+    va_list ap;
+
+    if (dst_errp && !*dst_errp) {
+        va_start(ap, fmt);
+        error_vprepend(&err, fmt, ap);
+        va_end(ap);
+    } /* else error is being ignored, don't bother with prepending */
+    error_propagate(dst_errp, err);
+}
-- 
2.17.2

[Qemu-devel] [PULL 04/40] Use error_fatal to simplify obvious fatal errors (again)

[Markus Armbruster]

Add a slight improvement of the Coccinelle semantic patch from commit
007b06578ab, and use it to clean up.  It leaves dead Error * variables
behind, cleaned up manually.

Cc: David Gibson <david@gibson.dropbear.id.au>
Cc: Alexander Graf <agraf@suse.de>
Cc: Eric Blake <eblake@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20181017082702.5581-3-armbru@redhat.com>
---
 hw/intc/xics_kvm.c                       |  7 +------
 qemu-nbd.c                               |  6 +-----
 scripts/coccinelle/use-error_fatal.cocci | 20 ++++++++++++++++++++
 vl.c                                     |  7 +------
 4 files changed, 23 insertions(+), 17 deletions(-)
 create mode 100644 scripts/coccinelle/use-error_fatal.cocci

diff --git a/hw/intc/xics_kvm.c b/hw/intc/xics_kvm.c
index 30c3769a20..e8fa9a53ae 100644
--- a/hw/intc/xics_kvm.c
+++ b/hw/intc/xics_kvm.c
@@ -198,17 +198,12 @@ static void ics_get_kvm_state(ICSState *ics)
 {
     uint64_t state;
     int i;
-    Error *local_err = NULL;
 
     for (i = 0; i < ics->nr_irqs; i++) {
         ICSIRQState *irq = &ics->irqs[i];
 
         kvm_device_access(kernel_xics_fd, KVM_DEV_XICS_GRP_SOURCES,
-                          i + ics->offset, &state, false, &local_err);
-        if (local_err) {
-            error_report_err(local_err);
-            exit(1);
-        }
+                          i + ics->offset, &state, false, &error_fatal);
 
         irq->server = state & KVM_XICS_DESTINATION_MASK;
         irq->saved_priority = (state >> KVM_XICS_PRIORITY_SHIFT)
diff --git a/qemu-nbd.c b/qemu-nbd.c
index e76fe3082a..7874bc973c 100644
--- a/qemu-nbd.c
+++ b/qemu-nbd.c
@@ -1002,11 +1002,7 @@ int main(int argc, char **argv)
     }
 
     exp = nbd_export_new(bs, dev_offset, fd_size, nbdflags, nbd_export_closed,
-                         writethrough, NULL, &local_err);
-    if (!exp) {
-        error_report_err(local_err);
-        exit(EXIT_FAILURE);
-    }
+                         writethrough, NULL, &error_fatal);
     nbd_export_set_name(exp, export_name);
     nbd_export_set_description(exp, export_description);
 
diff --git a/scripts/coccinelle/use-error_fatal.cocci b/scripts/coccinelle/use-error_fatal.cocci
new file mode 100644
index 0000000000..10fff0aec4
--- /dev/null
+++ b/scripts/coccinelle/use-error_fatal.cocci
@@ -0,0 +1,20 @@
+@@
+type T;
+identifier FUN, RET;
+expression list ARGS;
+expression ERR, EC, FAIL;
+@@
+(
+-    T RET = FUN(ARGS, &ERR);
++    T RET = FUN(ARGS, &error_fatal);
+|
+-    RET = FUN(ARGS, &ERR);
++    RET = FUN(ARGS, &error_fatal);
+|
+-    FUN(ARGS, &ERR);
++    FUN(ARGS, &error_fatal);
+)
+-    if (FAIL) {
+-        error_report_err(ERR);
+-        exit(EC);
+-    }
diff --git a/vl.c b/vl.c
index 61305b5891..db83cfe2e9 100644
--- a/vl.c
+++ b/vl.c
@@ -2002,15 +2002,10 @@ static void select_vgahw(const char *p)
 
 static void parse_display_qapi(const char *optarg)
 {
-    Error *err = NULL;
     DisplayOptions *opts;
     Visitor *v;
 
-    v = qobject_input_visitor_new_str(optarg, "type", &err);
-    if (!v) {
-        error_report_err(err);
-        exit(1);
-    }
+    v = qobject_input_visitor_new_str(optarg, "type", &error_fatal);
 
     visit_type_DisplayOptions(v, NULL, &opts, &error_fatal);
     QAPI_CLONE_MEMBERS(DisplayOptions, &dpy, opts);
-- 
2.17.2

[Qemu-devel] [PULL 05/40] block: Use warn_report() & friends to report warnings

[Markus Armbruster]

Calling error_report() in a function that takes an Error ** argument
is suspicious.  Convert a few that are actually warnings to
warn_report().

While there, split warnings consisting of multiple sentences to
conform to conventions spelled out in warn_report()'s contract, and
improve a rather useless warning in sheepdog.c.

Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Lieven <pl@kamp.de>
Cc: Liu Yuan <namei.unix@gmail.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20181017082702.5581-4-armbru@redhat.com>

Drop changes to "without an explicit read-only=on" warnings, because
there's a series removing them pending.  Also drop a cc: to a former
Sheepdog maintainer.

Reviewed-by: Kevin Wolf <kwolf@redhat.com>
---
 block/iscsi.c    | 2 +-
 block/rbd.c      | 4 ++--
 block/sheepdog.c | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/block/iscsi.c b/block/iscsi.c
index bb69faf34a..73998c2860 100644
--- a/block/iscsi.c
+++ b/block/iscsi.c
@@ -1844,7 +1844,7 @@ static int iscsi_open(BlockDriverState *bs, QDict *options, int flags,
     iscsi_set_timeout(iscsi, timeout);
 #else
     if (timeout) {
-        error_report("iSCSI: ignoring timeout value for libiscsi <1.15.0");
+        warn_report("iSCSI: ignoring timeout value for libiscsi <1.15.0");
     }
 #endif
 
diff --git a/block/rbd.c b/block/rbd.c
index 014c68d629..e5bf5a146f 100644
--- a/block/rbd.c
+++ b/block/rbd.c
@@ -750,8 +750,8 @@ static int qemu_rbd_open(BlockDriverState *bs, QDict *options, int flags,
         /* Take care whenever deciding to actually deprecate; once this ability
          * is removed, we will not be able to open any images with legacy-styled
          * backing image strings. */
-        error_report("RBD options encoded in the filename as keyvalue pairs "
-                     "is deprecated");
+        warn_report("RBD options encoded in the filename as keyvalue pairs "
+                    "is deprecated");
     }
 
     /* Remove the processed options from the QDict (the visitor processes
diff --git a/block/sheepdog.c b/block/sheepdog.c
index b229a664d9..0125df9d49 100644
--- a/block/sheepdog.c
+++ b/block/sheepdog.c
@@ -572,7 +572,7 @@ static int connect_to_sdog(BDRVSheepdogState *s, Error **errp)
     if (s->addr->type == SOCKET_ADDRESS_TYPE_INET && fd >= 0) {
         int ret = socket_set_nodelay(fd);
         if (ret < 0) {
-            error_report("%s", strerror(errno));
+            warn_report("can't set TCP_NODELAY: %s", strerror(errno));
         }
     }
 
-- 
2.17.2

[Qemu-devel] [PULL 06/40] cpus hw target: Use warn_report() & friends to report warnings

[Markus Armbruster]

Calling error_report() in a function that takes an Error ** argument
is suspicious.  Convert a few that are actually warnings to
warn_report().

While there, split a warning consisting of multiple sentences to
conform to conventions spelled out in warn_report()'s contract.

Cc: Alex Bennée <alex.bennee@linaro.org>
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Fam Zheng <famz@redhat.com>
Cc: Wei Huang <wei@redhat.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20181017082702.5581-5-armbru@redhat.com>
---
 cpus.c                          |  8 ++++----
 hw/display/cg3.c                |  2 +-
 hw/display/tcx.c                |  2 +-
 hw/misc/ivshmem.c               |  4 ++--
 hw/net/virtio-net.c             |  8 ++++----
 hw/virtio/virtio-pci.c          |  4 ++--
 target/i386/cpu.c               | 17 +++++++++--------
 target/ppc/translate_init.inc.c |  4 ++--
 8 files changed, 25 insertions(+), 24 deletions(-)

diff --git a/cpus.c b/cpus.c
index 361678e459..7804071872 100644
--- a/cpus.c
+++ b/cpus.c
@@ -211,12 +211,12 @@ void qemu_tcg_configure(QemuOpts *opts, Error **errp)
                 error_setg(errp, "No MTTCG when icount is enabled");
             } else {
 #ifndef TARGET_SUPPORTS_MTTCG
-                error_report("Guest not yet converted to MTTCG - "
-                             "you may get unexpected results");
+                warn_report("Guest not yet converted to MTTCG - "
+                            "you may get unexpected results");
 #endif
                 if (!check_tcg_memory_orders_compatible()) {
-                    error_report("Guest expects a stronger memory ordering "
-                                 "than the host provides");
+                    warn_report("Guest expects a stronger memory ordering "
+                                "than the host provides");
                     error_printf("This may cause strange/hard to debug errors\n");
                 }
                 mttcg_enabled = true;
diff --git a/hw/display/cg3.c b/hw/display/cg3.c
index 1c199ab369..e50d97e48c 100644
--- a/hw/display/cg3.c
+++ b/hw/display/cg3.c
@@ -307,7 +307,7 @@ static void cg3_realizefn(DeviceState *dev, Error **errp)
         ret = load_image_mr(fcode_filename, &s->rom);
         g_free(fcode_filename);
         if (ret < 0 || ret > FCODE_MAX_ROM_SIZE) {
-            error_report("cg3: could not load prom '%s'", CG3_ROM_FILE);
+            warn_report("cg3: could not load prom '%s'", CG3_ROM_FILE);
         }
     }
 
diff --git a/hw/display/tcx.c b/hw/display/tcx.c
index b2786ee8d0..66f2459226 100644
--- a/hw/display/tcx.c
+++ b/hw/display/tcx.c
@@ -823,7 +823,7 @@ static void tcx_realizefn(DeviceState *dev, Error **errp)
         ret = load_image_mr(fcode_filename, &s->rom);
         g_free(fcode_filename);
         if (ret < 0 || ret > FCODE_MAX_ROM_SIZE) {
-            error_report("tcx: could not load prom '%s'", TCX_ROM_FILE);
+            warn_report("tcx: could not load prom '%s'", TCX_ROM_FILE);
         }
     }
 
diff --git a/hw/misc/ivshmem.c b/hw/misc/ivshmem.c
index 8cb17b9dd4..f88910e55c 100644
--- a/hw/misc/ivshmem.c
+++ b/hw/misc/ivshmem.c
@@ -1288,8 +1288,8 @@ static void ivshmem_realize(PCIDevice *dev, Error **errp)
     IVShmemState *s = IVSHMEM_COMMON(dev);
 
     if (!qtest_enabled()) {
-        error_report("ivshmem is deprecated, please use ivshmem-plain"
-                     " or ivshmem-doorbell instead");
+        warn_report("ivshmem is deprecated, please use ivshmem-plain"
+                    " or ivshmem-doorbell instead");
     }
 
     if (qemu_chr_fe_backend_connected(&s->server_chr) + !!s->shmobj != 1) {
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index 4bdd5b8532..385b1a03e9 100644
--- a/hw/net/virtio-net.c
+++ b/hw/net/virtio-net.c
@@ -2020,10 +2020,10 @@ static void virtio_net_device_realize(DeviceState *dev, Error **errp)
 
     if (n->net_conf.tx && strcmp(n->net_conf.tx, "timer")
                        && strcmp(n->net_conf.tx, "bh")) {
-        error_report("virtio-net: "
-                     "Unknown option tx=%s, valid options: \"timer\" \"bh\"",
-                     n->net_conf.tx);
-        error_report("Defaulting to \"bh\"");
+        warn_report("virtio-net: "
+                    "Unknown option tx=%s, valid options: \"timer\" \"bh\"",
+                    n->net_conf.tx);
+        error_printf("Defaulting to \"bh\"");
     }
 
     n->net_conf.tx_queue_size = MIN(virtio_net_max_tx_queue_size(n),
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index 3a01fe90f0..a954799267 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -1683,8 +1683,8 @@ static void virtio_pci_device_plugged(DeviceState *d, Error **errp)
         if (err) {
             /* Notice when a system that supports MSIx can't initialize it */
             if (err != -ENOTSUP) {
-                error_report("unable to init msix vectors to %" PRIu32,
-                             proxy->nvectors);
+                warn_report("unable to init msix vectors to %" PRIu32,
+                            proxy->nvectors);
             }
             proxy->nvectors = 0;
         }
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index c88876dfe3..9d4217afba 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -5123,14 +5123,15 @@ static void x86_cpu_realizefn(DeviceState *dev, Error **errp)
      * NOTE: the following code has to follow qemu_init_vcpu(). Otherwise
      * cs->nr_threads hasn't be populated yet and the checking is incorrect.
      */
-     if (IS_AMD_CPU(env) &&
-         !(env->features[FEAT_8000_0001_ECX] & CPUID_EXT3_TOPOEXT) &&
-         cs->nr_threads > 1 && !ht_warned) {
-            error_report("This family of AMD CPU doesn't support "
-                         "hyperthreading(%d). Please configure -smp "
-                         "options properly or try enabling topoext feature.",
-                         cs->nr_threads);
-        ht_warned = true;
+    if (IS_AMD_CPU(env) &&
+        !(env->features[FEAT_8000_0001_ECX] & CPUID_EXT3_TOPOEXT) &&
+        cs->nr_threads > 1 && !ht_warned) {
+            warn_report("This family of AMD CPU doesn't support "
+                        "hyperthreading(%d)",
+                        cs->nr_threads);
+            error_printf("Please configure -smp options properly"
+                         " or try enabling topoext feature.\n");
+            ht_warned = true;
     }
 
     x86_cpu_apic_realize(cpu, &local_err);
diff --git a/target/ppc/translate_init.inc.c b/target/ppc/translate_init.inc.c
index 263e63cb03..ee9432eb15 100644
--- a/target/ppc/translate_init.inc.c
+++ b/target/ppc/translate_init.inc.c
@@ -8381,8 +8381,8 @@ static void getset_compat_deprecated(Object *obj, Visitor *v, const char *name,
     QNull *null = NULL;
 
     if (!qtest_enabled()) {
-        error_report("CPU 'compat' property is deprecated and has no effect; "
-                     "use max-cpu-compat machine property instead");
+        warn_report("CPU 'compat' property is deprecated and has no effect; "
+                    "use max-cpu-compat machine property instead");
     }
     visit_type_null(v, name, &null, NULL);
     qobject_unref(null);
-- 
2.17.2

[Qemu-devel] [PULL 07/40] vfio: Use warn_report() & friends to report warnings

[Markus Armbruster]

The vfio code reports warnings like

    error_report(WARN_PREFIX "Could not frobnicate", DEV-NAME);

where WARN_PREFIX is defined so the message comes out as

    vfio warning: DEV-NAME: Could not frobnicate

This usage predates the introduction of warn_report() & friends in
commit 97f40301f1d.  It's time to convert to that interface.  Since
these functions already prefix the message with "warning: ", replace
WARN_PREFIX by VFIO_MSG_PREFIX, so the messages come out like

    warning: vfio DEV-NAME: Could not frobnicate

The next commit will replace ERR_PREFIX.

Cc: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20181017082702.5581-6-armbru@redhat.com>
---
 hw/vfio/pci.c                 | 14 +++++++-------
 hw/vfio/platform.c            |  4 ++--
 include/hw/vfio/vfio-common.h |  2 +-
 3 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 4404c28360..0c3d245932 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -252,7 +252,7 @@ static void vfio_intx_update(PCIDevice *pdev)
 
     vfio_intx_enable_kvm(vdev, &err);
     if (err) {
-        error_reportf_err(err, WARN_PREFIX, vdev->vbasedev.name);
+        warn_reportf_err(err, VFIO_MSG_PREFIX, vdev->vbasedev.name);
     }
 
     /* Re-enable the interrupt in cased we missed an EOI */
@@ -317,7 +317,7 @@ static int vfio_intx_enable(VFIOPCIDevice *vdev, Error **errp)
 
     vfio_intx_enable_kvm(vdev, &err);
     if (err) {
-        error_reportf_err(err, WARN_PREFIX, vdev->vbasedev.name);
+        warn_reportf_err(err, VFIO_MSG_PREFIX, vdev->vbasedev.name);
     }
 
     vdev->interrupt = VFIO_INT_INTx;
@@ -1557,7 +1557,7 @@ static int vfio_msix_setup(VFIOPCIDevice *vdev, int pos, Error **errp)
                     &err);
     if (ret < 0) {
         if (ret == -ENOTSUP) {
-            error_report_err(err);
+            warn_report_err(err);
             return 0;
         }
 
@@ -2590,9 +2590,9 @@ static void vfio_populate_device(VFIOPCIDevice *vdev, Error **errp)
     } else if (irq_info.count == 1) {
         vdev->pci_aer = true;
     } else {
-        error_report(WARN_PREFIX
-                     "Could not enable error recovery for the device",
-                     vbasedev->name);
+        warn_report(VFIO_MSG_PREFIX
+                    "Could not enable error recovery for the device",
+                    vbasedev->name);
     }
 }
 
@@ -2717,7 +2717,7 @@ static void vfio_req_notifier_handler(void *opaque)
 
     qdev_unplug(&vdev->pdev.qdev, &err);
     if (err) {
-        error_reportf_err(err, WARN_PREFIX, vdev->vbasedev.name);
+        warn_reportf_err(err, VFIO_MSG_PREFIX, vdev->vbasedev.name);
     }
 }
 
diff --git a/hw/vfio/platform.c b/hw/vfio/platform.c
index 64c1af653d..baf236ae79 100644
--- a/hw/vfio/platform.c
+++ b/hw/vfio/platform.c
@@ -679,8 +679,8 @@ static void vfio_platform_realize(DeviceState *dev, Error **errp)
 
     for (i = 0; i < vbasedev->num_regions; i++) {
         if (vfio_region_mmap(vdev->regions[i])) {
-            error_report("%s mmap unsupported. Performance may be slow",
-                         memory_region_name(vdev->regions[i]->mem));
+            warn_report("%s mmap unsupported, performance may be slow",
+                        memory_region_name(vdev->regions[i]->mem));
         }
         sysbus_init_mmio(sbdev, vdev->regions[i]->mem);
     }
diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h
index e46a28910a..1d7630345b 100644
--- a/include/hw/vfio/vfio-common.h
+++ b/include/hw/vfio/vfio-common.h
@@ -32,7 +32,7 @@
 #endif
 
 #define ERR_PREFIX "vfio error: %s: "
-#define WARN_PREFIX "vfio warning: %s: "
+#define VFIO_MSG_PREFIX "vfio %s: "
 
 enum {
     VFIO_DEVICE_TYPE_PCI = 0,
-- 
2.17.2

[Qemu-devel] [PULL 08/40] vfio: Clean up error reporting after previous commit

[Markus Armbruster]

The previous commit changed vfio's warning messages from

    vfio warning: DEV-NAME: Could not frobnicate

to

    warning: vfio DEV-NAME: Could not frobnicate

To match this change, change error messages from

    vfio error: DEV-NAME: On fire

to

    vfio DEV-NAME: On fire

Note the loss of "error".  If we think marking error messages that way
is a good idea, we should mark *all* error messages, i.e. make
error_report() print it.

Cc: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Message-Id: <20181017082702.5581-7-armbru@redhat.com>
---
 hw/vfio/pci-quirks.c          | 4 ++--
 hw/vfio/pci.c                 | 8 ++++----
 hw/vfio/platform.c            | 2 +-
 include/hw/vfio/vfio-common.h | 1 -
 4 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/hw/vfio/pci-quirks.c b/hw/vfio/pci-quirks.c
index 481fd08df7..eae31c74d6 100644
--- a/hw/vfio/pci-quirks.c
+++ b/hw/vfio/pci-quirks.c
@@ -1670,7 +1670,7 @@ static void vfio_probe_igd_bar4_quirk(VFIOPCIDevice *vdev, int nr)
      * but also no point in us enabling VGA if disabled in hardware.
      */
     if (!(gmch & 0x2) && !vdev->vga && vfio_populate_vga(vdev, &err)) {
-        error_reportf_err(err, ERR_PREFIX, vdev->vbasedev.name);
+        error_reportf_err(err, VFIO_MSG_PREFIX, vdev->vbasedev.name);
         error_report("IGD device %s failed to enable VGA access, "
                      "legacy mode disabled", vdev->vbasedev.name);
         goto out;
@@ -1696,7 +1696,7 @@ static void vfio_probe_igd_bar4_quirk(VFIOPCIDevice *vdev, int nr)
     ret = vfio_pci_igd_opregion_init(vdev, opregion, &err);
     if (ret) {
         error_append_hint(&err, "IGD legacy mode disabled\n");
-        error_reportf_err(err, ERR_PREFIX, vdev->vbasedev.name);
+        error_reportf_err(err, VFIO_MSG_PREFIX, vdev->vbasedev.name);
         goto out;
     }
 
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 0c3d245932..5c7bd96984 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -745,7 +745,7 @@ static void vfio_msi_disable_common(VFIOPCIDevice *vdev)
 
     vfio_intx_enable(vdev, &err);
     if (err) {
-        error_reportf_err(err, ERR_PREFIX, vdev->vbasedev.name);
+        error_reportf_err(err, VFIO_MSG_PREFIX, vdev->vbasedev.name);
     }
 }
 
@@ -2196,7 +2196,7 @@ static void vfio_pci_post_reset(VFIOPCIDevice *vdev)
 
     vfio_intx_enable(vdev, &err);
     if (err) {
-        error_reportf_err(err, ERR_PREFIX, vdev->vbasedev.name);
+        error_reportf_err(err, VFIO_MSG_PREFIX, vdev->vbasedev.name);
     }
 
     for (nr = 0; nr < PCI_NUM_REGIONS - 1; ++nr) {
@@ -2830,7 +2830,7 @@ static void vfio_realize(PCIDevice *pdev, Error **errp)
 
     if (stat(vdev->vbasedev.sysfsdev, &st) < 0) {
         error_setg_errno(errp, errno, "no such host device");
-        error_prepend(errp, ERR_PREFIX, vdev->vbasedev.sysfsdev);
+        error_prepend(errp, VFIO_MSG_PREFIX, vdev->vbasedev.sysfsdev);
         return;
     }
 
@@ -3085,7 +3085,7 @@ out_teardown:
     vfio_teardown_msi(vdev);
     vfio_bars_exit(vdev);
 error:
-    error_prepend(errp, ERR_PREFIX, vdev->vbasedev.name);
+    error_prepend(errp, VFIO_MSG_PREFIX, vdev->vbasedev.name);
 }
 
 static void vfio_instance_finalize(Object *obj)
diff --git a/hw/vfio/platform.c b/hw/vfio/platform.c
index baf236ae79..398db38f14 100644
--- a/hw/vfio/platform.c
+++ b/hw/vfio/platform.c
@@ -690,7 +690,7 @@ out:
     }
 
     if (vdev->vbasedev.name) {
-        error_prepend(errp, ERR_PREFIX, vdev->vbasedev.name);
+        error_prepend(errp, VFIO_MSG_PREFIX, vdev->vbasedev.name);
     } else {
         error_prepend(errp, "vfio error: ");
     }
diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h
index 1d7630345b..1b434d02f6 100644
--- a/include/hw/vfio/vfio-common.h
+++ b/include/hw/vfio/vfio-common.h
@@ -31,7 +31,6 @@
 #include <linux/vfio.h>
 #endif
 
-#define ERR_PREFIX "vfio error: %s: "
 #define VFIO_MSG_PREFIX "vfio %s: "
 
 enum {
-- 
2.17.2

[Qemu-devel] [PULL 09/40] char: Use error_printf() to print help and such

[Markus Armbruster]

Calling error_report() in a function that takes an Error ** argument
is suspicious.  Convert a few that are actually help and such to
error_printf().

Improves output of -chardev help from

    qemu-system-x86_64: -chardev help: Available chardev backend types:
    serial
    ...

to

    Available chardev backend types:
    serial
    ...

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Marc-André Lureau" <marcandre.lureau@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20181017082702.5581-8-armbru@redhat.com>
---
 chardev/char-pty.c | 2 +-
 chardev/char.c     | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/chardev/char-pty.c b/chardev/char-pty.c
index e8d9a53476..f681d637c1 100644
--- a/chardev/char-pty.c
+++ b/chardev/char-pty.c
@@ -259,7 +259,7 @@ static void char_pty_open(Chardev *chr,
     qemu_set_nonblock(master_fd);
 
     chr->filename = g_strdup_printf("pty:%s", pty_name);
-    error_report("char device redirected to %s (label %s)",
+    error_printf("char device redirected to %s (label %s)\n",
                  pty_name, chr->label);
 
     s = PTY_CHARDEV(chr);
diff --git a/chardev/char.c b/chardev/char.c
index e115166995..7f07a1bfbd 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -634,7 +634,7 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts, Error **errp)
 
         chardev_name_foreach(help_string_append, str);
 
-        error_report("Available chardev backend types: %s", str->str);
+        error_printf("Available chardev backend types: %s\n", str->str);
         g_string_free(str, true);
         return NULL;
     }
-- 
2.17.2

[Qemu-devel] [PULL 10/40] 9pfs: Fix CLI parsing crash on error

[Markus Armbruster]

Calling error_report() in a function that takes an Error ** argument
is suspicious.  9p-handle.c's handle_parse_opts() does that, and then
fails without setting an error.  Wrong.  Its caller crashes when it
tries to report the error:

    $ qemu-system-x86_64 -nodefaults -fsdev id=foo,fsdriver=handle
    qemu-system-x86_64: -fsdev id=foo,fsdriver=handle: warning: handle backend is deprecated
    qemu-system-x86_64: -fsdev id=foo,fsdriver=handle: fsdev: No path specified
    Segmentation fault (core dumped)

Screwed up when commit 91cda4e8f37 (v2.12.0) converted the function to
Error.  Fix by calling error_setg() instead of error_report().

Fixes: 91cda4e8f372602795e3a2f4bd2e3adaf9f82255
Cc: Greg Kurz <groug@kaod.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20181017082702.5581-9-armbru@redhat.com>
---
 hw/9pfs/9p-handle.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/hw/9pfs/9p-handle.c b/hw/9pfs/9p-handle.c
index f3641dbe4a..3465b1ef30 100644
--- a/hw/9pfs/9p-handle.c
+++ b/hw/9pfs/9p-handle.c
@@ -19,6 +19,7 @@
 #include <grp.h>
 #include <sys/socket.h>
 #include <sys/un.h>
+#include "qapi/error.h"
 #include "qemu/xattr.h"
 #include "qemu/cutils.h"
 #include "qemu/error-report.h"
@@ -655,12 +656,13 @@ static int handle_parse_opts(QemuOpts *opts, FsDriverEntry *fse, Error **errp)
     warn_report("handle backend is deprecated");
 
     if (sec_model) {
-        error_report("Invalid argument security_model specified with handle fsdriver");
+        error_setg(errp,
+                   "Invalid argument security_model specified with handle fsdriver");
         return -1;
     }
 
     if (!path) {
-        error_report("fsdev: No path specified");
+        error_setg(errp, "fsdev: No path specified");
         return -1;
     }
     fse->path = g_strdup(path);
-- 
2.17.2

[Qemu-devel] [PULL 11/40] pc: Fix machine property nvdimm-persistence error handling

[Markus Armbruster]

Calling error_report() in a function that takes an Error ** argument
is suspicious.  pc.c's pc_machine_set_nvdimm_persistence() does that,
and then exit()s.  Wrong.  Attempting to set machine property
nvdimm-persistence to a bad value instantly kills the VM:

    $ qemu-system-x86_64 -nodefaults -S -display none -qmp stdio
    {"QMP": {"version": {"qemu": {"micro": 50, "minor": 0, "major": 3}, "package": "v3.0.0-837-gc5e4e49258"}, "capabilities": []}}
    {"execute": "qmp_capabilities"}
    {"return": {}}
    {"execute": "qom-set", "arguments": {"path": "/machine", "property": "nvdimm-persistence", "value": "instadeath"}}
    -machine nvdimm-persistence=instadeath: unsupported option
    $ echo $?
    1

Broken when commit 11c39b5cd96 (v3.0.0) replaced error_propagate();
return by error_report(); exit() instead of error_setg(); return.  Fix
that.

Fixes: 11c39b5cd966ddc067a1ca0c5392ec9b666c45b7
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20181017082702.5581-10-armbru@redhat.com>
---
 hw/i386/pc.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index cd5029c149..eab8572f2a 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -2209,8 +2209,9 @@ static void pc_machine_set_nvdimm_persistence(Object *obj, const char *value,
     else if (strcmp(value, "mem-ctrl") == 0)
         nvdimm_state->persistence = 2;
     else {
-        error_report("-machine nvdimm-persistence=%s: unsupported option", value);
-        exit(EXIT_FAILURE);
+        error_setg(errp, "-machine nvdimm-persistence=%s: unsupported option",
+                   value);
+        return;
     }
 
     g_free(nvdimm_state->persistence_string);
-- 
2.17.2

[Qemu-devel] [PULL 12/40] ioapic: Fix error handling in realize()

[Markus Armbruster]

Calling error_report() in a function that takes an Error ** argument
is suspicious.  ioapic_realize() does that, and then exit()s.
Currently mostly harmless, as the device cannot be hot-plugged.

Fixes: 20fd4b7b6d9282fe0cb83601f1821f31bd257458
Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20181017082702.5581-11-armbru@redhat.com>
---
 hw/intc/ioapic.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/hw/intc/ioapic.c b/hw/intc/ioapic.c
index b6896ac4ce..4e529729b4 100644
--- a/hw/intc/ioapic.c
+++ b/hw/intc/ioapic.c
@@ -21,7 +21,7 @@
  */
 
 #include "qemu/osdep.h"
-#include "qemu/error-report.h"
+#include "qapi/error.h"
 #include "monitor/monitor.h"
 #include "hw/hw.h"
 #include "hw/i386/pc.h"
@@ -393,9 +393,9 @@ static void ioapic_realize(DeviceState *dev, Error **errp)
     IOAPICCommonState *s = IOAPIC_COMMON(dev);
 
     if (s->version != 0x11 && s->version != 0x20) {
-        error_report("IOAPIC only supports version 0x11 or 0x20 "
-                     "(default: 0x%x).", IOAPIC_VER_DEF);
-        exit(1);
+        error_setg(errp, "IOAPIC only supports version 0x11 or 0x20 "
+                   "(default: 0x%x).", IOAPIC_VER_DEF);
+        return;
     }
 
     memory_region_init_io(&s->io_memory, OBJECT(s), &ioapic_io_ops, s,
-- 
2.17.2

[Qemu-devel] [PULL 13/40] smbios: Clean up error handling in smbios_add()

[Markus Armbruster]

Calling error_report() in a function that takes an Error ** argument
is suspicious.  smbios_entry_add() does that, and then exit()s.  It
also passes &error_fatal to qemu_opts_validate().  Both wrong, but
currently harmless, as its only caller passes &error_fatal.  Messed up
in commit 1007a37e208.  Clean it up.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20181017082702.5581-12-armbru@redhat.com>
---
 hw/smbios/smbios.c | 90 +++++++++++++++++++++++++++++++---------------
 1 file changed, 62 insertions(+), 28 deletions(-)

diff --git a/hw/smbios/smbios.c b/hw/smbios/smbios.c
index a27e54b2fa..920939454e 100644
--- a/hw/smbios/smbios.c
+++ b/hw/smbios/smbios.c
@@ -950,6 +950,7 @@ static void save_opt_list(size_t *ndest, const char ***dest,
 
 void smbios_entry_add(QemuOpts *opts, Error **errp)
 {
+    Error *err = NULL;
     const char *val;
 
     assert(!smbios_immutable);
@@ -960,12 +961,16 @@ void smbios_entry_add(QemuOpts *opts, Error **errp)
         int size;
         struct smbios_table *table; /* legacy mode only */
 
-        qemu_opts_validate(opts, qemu_smbios_file_opts, &error_fatal);
+        qemu_opts_validate(opts, qemu_smbios_file_opts, &err);
+        if (err) {
+            error_propagate(errp, err);
+            return;
+        }
 
         size = get_image_size(val);
         if (size == -1 || size < sizeof(struct smbios_structure_header)) {
-            error_report("Cannot read SMBIOS file %s", val);
-            exit(1);
+            error_setg(errp, "Cannot read SMBIOS file %s", val);
+            return;
         }
 
         /*
@@ -978,14 +983,15 @@ void smbios_entry_add(QemuOpts *opts, Error **errp)
                                                     smbios_tables_len);
 
         if (load_image(val, (uint8_t *)header) != size) {
-            error_report("Failed to load SMBIOS file %s", val);
-            exit(1);
+            error_setg(errp, "Failed to load SMBIOS file %s", val);
+            return;
         }
 
         if (test_bit(header->type, have_fields_bitmap)) {
-            error_report("can't load type %d struct, fields already specified!",
-                         header->type);
-            exit(1);
+            error_setg(errp,
+                       "can't load type %d struct, fields already specified!",
+                       header->type);
+            return;
         }
         set_bit(header->type, have_binfile_bitmap);
 
@@ -1030,19 +1036,23 @@ void smbios_entry_add(QemuOpts *opts, Error **errp)
         unsigned long type = strtoul(val, NULL, 0);
 
         if (type > SMBIOS_MAX_TYPE) {
-            error_report("out of range!");
-            exit(1);
+            error_setg(errp, "out of range!");
+            return;
         }
 
         if (test_bit(type, have_binfile_bitmap)) {
-            error_report("can't add fields, binary file already loaded!");
-            exit(1);
+            error_setg(errp, "can't add fields, binary file already loaded!");
+            return;
         }
         set_bit(type, have_fields_bitmap);
 
         switch (type) {
         case 0:
-            qemu_opts_validate(opts, qemu_smbios_type0_opts, &error_fatal);
+            qemu_opts_validate(opts, qemu_smbios_type0_opts, &err);
+            if (err) {
+                error_propagate(errp, err);
+                return;
+            }
             save_opt(&type0.vendor, opts, "vendor");
             save_opt(&type0.version, opts, "version");
             save_opt(&type0.date, opts, "date");
@@ -1051,14 +1061,18 @@ void smbios_entry_add(QemuOpts *opts, Error **errp)
             val = qemu_opt_get(opts, "release");
             if (val) {
                 if (sscanf(val, "%hhu.%hhu", &type0.major, &type0.minor) != 2) {
-                    error_report("Invalid release");
-                    exit(1);
+                    error_setg(errp, "Invalid release");
+                    return;
                 }
                 type0.have_major_minor = true;
             }
             return;
         case 1:
-            qemu_opts_validate(opts, qemu_smbios_type1_opts, &error_fatal);
+            qemu_opts_validate(opts, qemu_smbios_type1_opts, &err);
+            if (err) {
+                error_propagate(errp, err);
+                return;
+            }
             save_opt(&type1.manufacturer, opts, "manufacturer");
             save_opt(&type1.product, opts, "product");
             save_opt(&type1.version, opts, "version");
@@ -1069,14 +1083,18 @@ void smbios_entry_add(QemuOpts *opts, Error **errp)
             val = qemu_opt_get(opts, "uuid");
             if (val) {
                 if (qemu_uuid_parse(val, &qemu_uuid) != 0) {
-                    error_report("Invalid UUID");
-                    exit(1);
+                    error_setg(errp, "Invalid UUID");
+                    return;
                 }
                 qemu_uuid_set = true;
             }
             return;
         case 2:
-            qemu_opts_validate(opts, qemu_smbios_type2_opts, &error_fatal);
+            qemu_opts_validate(opts, qemu_smbios_type2_opts, &err);
+            if (err) {
+                error_propagate(errp, err);
+                return;
+            }
             save_opt(&type2.manufacturer, opts, "manufacturer");
             save_opt(&type2.product, opts, "product");
             save_opt(&type2.version, opts, "version");
@@ -1085,7 +1103,11 @@ void smbios_entry_add(QemuOpts *opts, Error **errp)
             save_opt(&type2.location, opts, "location");
             return;
         case 3:
-            qemu_opts_validate(opts, qemu_smbios_type3_opts, &error_fatal);
+            qemu_opts_validate(opts, qemu_smbios_type3_opts, &err);
+            if (err) {
+                error_propagate(errp, err);
+                return;
+            }
             save_opt(&type3.manufacturer, opts, "manufacturer");
             save_opt(&type3.version, opts, "version");
             save_opt(&type3.serial, opts, "serial");
@@ -1093,7 +1115,11 @@ void smbios_entry_add(QemuOpts *opts, Error **errp)
             save_opt(&type3.sku, opts, "sku");
             return;
         case 4:
-            qemu_opts_validate(opts, qemu_smbios_type4_opts, &error_fatal);
+            qemu_opts_validate(opts, qemu_smbios_type4_opts, &err);
+            if (err) {
+                error_propagate(errp, err);
+                return;
+            }
             save_opt(&type4.sock_pfx, opts, "sock_pfx");
             save_opt(&type4.manufacturer, opts, "manufacturer");
             save_opt(&type4.version, opts, "version");
@@ -1102,11 +1128,19 @@ void smbios_entry_add(QemuOpts *opts, Error **errp)
             save_opt(&type4.part, opts, "part");
             return;
         case 11:
-            qemu_opts_validate(opts, qemu_smbios_type11_opts, &error_fatal);
+            qemu_opts_validate(opts, qemu_smbios_type11_opts, &err);
+            if (err) {
+                error_propagate(errp, err);
+                return;
+            }
             save_opt_list(&type11.nvalues, &type11.values, opts, "value");
             return;
         case 17:
-            qemu_opts_validate(opts, qemu_smbios_type17_opts, &error_fatal);
+            qemu_opts_validate(opts, qemu_smbios_type17_opts, &err);
+            if (err) {
+                error_propagate(errp, err);
+                return;
+            }
             save_opt(&type17.loc_pfx, opts, "loc_pfx");
             save_opt(&type17.bank, opts, "bank");
             save_opt(&type17.manufacturer, opts, "manufacturer");
@@ -1116,12 +1150,12 @@ void smbios_entry_add(QemuOpts *opts, Error **errp)
             type17.speed = qemu_opt_get_number(opts, "speed", 0);
             return;
         default:
-            error_report("Don't know how to build fields for SMBIOS type %ld",
-                         type);
-            exit(1);
+            error_setg(errp,
+                       "Don't know how to build fields for SMBIOS type %ld",
+                       type);
+            return;
         }
     }
 
-    error_report("Must specify type= or file=");
-    exit(1);
+    error_setg(errp, "Must specify type= or file=");
 }
-- 
2.17.2

[Qemu-devel] [PULL 14/40] migration: Fix !replay_can_snapshot() error handling

[Markus Armbruster]

Calling error_report() in a function that takes an Error ** argument
is suspicious.  save_snapshot() and load_snapshot() do that, and then
fail without setting an error.  Wrong.  The HMP commands survive this
unscathed, since hmp_handle_error() does nothing when no error has
been set.  Callers main() (on behalf of -loadvm) and
replay_vmstate_init() crash, but I'm not sure the error is possible
there.

Screwed up when commit 377b21ccea1 (v2.12.0) added incorrect error
handling right next to correct examples.  Fix by calling error_setg()
instead of error_report().

Fixes: 377b21ccea1755a8b0dae822c29567c58dda6939
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20181017082702.5581-13-armbru@redhat.com>
---
 migration/savevm.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/migration/savevm.c b/migration/savevm.c
index 2d10e45582..5f8eb38676 100644
--- a/migration/savevm.c
+++ b/migration/savevm.c
@@ -2414,8 +2414,8 @@ int save_snapshot(const char *name, Error **errp)
     AioContext *aio_context;
 
     if (!replay_can_snapshot()) {
-        error_report("Record/replay does not allow making snapshot "
-                     "right now. Try once more later.");
+        error_setg(errp, "Record/replay does not allow making snapshot "
+                   "right now. Try once more later.");
         return ret;
     }
 
@@ -2611,8 +2611,8 @@ int load_snapshot(const char *name, Error **errp)
     MigrationIncomingState *mis = migration_incoming_get_current();
 
     if (!replay_can_snapshot()) {
-        error_report("Record/replay does not allow loading snapshot "
-                     "right now. Try once more later.");
+        error_setg(errp, "Record/replay does not allow loading snapshot "
+                   "right now. Try once more later.");
         return -EINVAL;
     }
 
-- 
2.17.2

[Qemu-devel] [PULL 15/40] l2tpv3: Improve -netdev/netdev_add/-net/... error reporting

[Markus Armbruster]

When -netdev l2tpv3 fails, it first reports a specific error, then a
generic one, like this:

    $ qemu-system-x86_64 -netdev l2tpv3,id=foo,src=,dst=,txsession=1
    qemu-system-x86_64: -netdev l2tpv3,id=foo,src=,dst=,txsession=1: l2tpv3_open : could not resolve src, errno = Name or service not known
    qemu-system-x86_64: Device 'l2tpv3' could not be initialized

With the command line, the messages go to stderr.  In HMP, they go to
the monitor.  In QMP, the second one becomes the error reply, and the
first one goes to stderr.

Convert net_init_tap() to Error.  This suppresses the unwanted second
message, and makes the specific error the QMP error reply.

Cc: Jason Wang <jasowang@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20181017082702.5581-14-armbru@redhat.com>
---
 net/l2tpv3.c | 25 ++++++++++++-------------
 1 file changed, 12 insertions(+), 13 deletions(-)

diff --git a/net/l2tpv3.c b/net/l2tpv3.c
index 6745b78990..81db24dc8c 100644
--- a/net/l2tpv3.c
+++ b/net/l2tpv3.c
@@ -28,6 +28,7 @@
 #include <netdb.h>
 #include "net/net.h"
 #include "clients.h"
+#include "qapi/error.h"
 #include "qemu-common.h"
 #include "qemu/error-report.h"
 #include "qemu/option.h"
@@ -528,7 +529,6 @@ int net_init_l2tpv3(const Netdev *netdev,
                     const char *name,
                     NetClientState *peer, Error **errp)
 {
-    /* FIXME error_setg(errp, ...) on failure */
     const NetdevL2TPv3Options *l2tpv3;
     NetL2TPV3State *s;
     NetClientState *nc;
@@ -555,7 +555,7 @@ int net_init_l2tpv3(const Netdev *netdev,
     }
 
     if ((l2tpv3->has_offset) && (l2tpv3->offset > 256)) {
-        error_report("l2tpv3_open : offset must be less than 256 bytes");
+        error_setg(errp, "offset must be less than 256 bytes");
         goto outerr;
     }
 
@@ -563,6 +563,8 @@ int net_init_l2tpv3(const Netdev *netdev,
         if (l2tpv3->has_rxcookie && l2tpv3->has_txcookie) {
             s->cookie = true;
         } else {
+            error_setg(errp,
+                       "require both 'rxcookie' and 'txcookie' or neither");
             goto outerr;
         }
     } else {
@@ -578,7 +580,7 @@ int net_init_l2tpv3(const Netdev *netdev,
     if (l2tpv3->has_udp && l2tpv3->udp) {
         s->udp = true;
         if (!(l2tpv3->has_srcport && l2tpv3->has_dstport)) {
-            error_report("l2tpv3_open : need both src and dst port for udp");
+            error_setg(errp, "need both src and dst port for udp");
             goto outerr;
         } else {
             srcport = l2tpv3->srcport;
@@ -639,20 +641,19 @@ int net_init_l2tpv3(const Netdev *netdev,
     gairet = getaddrinfo(l2tpv3->src, srcport, &hints, &result);
 
     if ((gairet != 0) || (result == NULL)) {
-        error_report(
-            "l2tpv3_open : could not resolve src, errno = %s",
-            gai_strerror(gairet)
-        );
+        error_setg(errp, "could not resolve src, errno = %s",
+                   gai_strerror(gairet));
         goto outerr;
     }
     fd = socket(result->ai_family, result->ai_socktype, result->ai_protocol);
     if (fd == -1) {
         fd = -errno;
-        error_report("l2tpv3_open : socket creation failed, errno = %d", -fd);
+        error_setg(errp, "socket creation failed, errno = %d",
+                   -fd);
         goto outerr;
     }
     if (bind(fd, (struct sockaddr *) result->ai_addr, result->ai_addrlen)) {
-        error_report("l2tpv3_open :  could not bind socket err=%i", errno);
+        error_setg(errp, "could not bind socket err=%i", errno);
         goto outerr;
     }
     if (result) {
@@ -677,10 +678,8 @@ int net_init_l2tpv3(const Netdev *netdev,
     result = NULL;
     gairet = getaddrinfo(l2tpv3->dst, dstport, &hints, &result);
     if ((gairet != 0) || (result == NULL)) {
-        error_report(
-            "l2tpv3_open : could not resolve dst, error = %s",
-            gai_strerror(gairet)
-        );
+        error_setg(errp, "could not resolve dst, error = %s",
+                   gai_strerror(gairet));
         goto outerr;
     }
 
-- 
2.17.2

[Qemu-devel] [PULL 16/40] net/socket: Fix invalid socket type error handling

[Markus Armbruster]

Calling error_report() in a function that takes an Error ** argument
is suspicious.  net_socket_fd_init() does that, and then fails without
setting an error.  Wrong.  I didn't analyze how exactly this can
break.  A caller that reports the error on failure would crash.

Broken when commit c37f0bb1d0d (v2.11.0) converted the function to
Error.  Fix by calling error_setg() instead of error_report().

Fixes: c37f0bb1d0d24e3a6b5f4659bb305913dcb798a6
Cc: Jason Wang <jasowang@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20181017082702.5581-15-armbru@redhat.com>
---
 net/socket.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/socket.c b/net/socket.c
index 6917fbcbf5..90ef3517be 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -453,8 +453,8 @@ static NetSocketState *net_socket_fd_init(NetClientState *peer,
     case SOCK_STREAM:
         return net_socket_fd_init_stream(peer, model, name, fd, is_connected);
     default:
-        error_report("socket type=%d for fd=%d must be either"
-                     " SOCK_DGRAM or SOCK_STREAM", so_type, fd);
+        error_setg(errp, "socket type=%d for fd=%d must be either"
+                   " SOCK_DGRAM or SOCK_STREAM", so_type, fd);
         closesocket(fd);
     }
     return NULL;
-- 
2.17.2

[Qemu-devel] [PULL 17/40] numa: Fix QMP command set-numa-node error handling

[Markus Armbruster]

Calling error_report() in a function that takes an Error ** argument
is suspicious.  parse_numa_node() does that, and then exit()s.  It
also passes &error_fatal to machine_set_cpu_numa_node().  Both wrong.
Attempting to configure numa when the machine doesn't support it kills
the VM:

    $ qemu-system-x86_64 -nodefaults -S -display none -M none -preconfig -qmp stdio
    {"QMP": {"version": {"qemu": {"micro": 50, "minor": 0, "major": 3}, "package": "v3.0.0-837-gc5e4e49258"}, "capabilities": []}}
    {"execute": "qmp_capabilities"}
    {"return": {}}
    {"execute": "set-numa-node", "arguments": {"type": "node"}}
    NUMA is not supported by this machine-type
    $ echo $?
    1

Messed up when commit 64c2a8f6d3f and 7c88e65d9e9 (v2.10.0) added
incorrect error handling right next to correct examples.  Latent bug
until commit f3be67812c2 (v3.0.0) made it accessible via QMP.  Fairly
harmless in practice, because it's limited to RUN_STATE_PRECONFIG.
The fix is obvious: replace error_report(); exit() by error_setg();
return.

This affects parse_numa_node()'s other caller
numa_complete_configuration(): since it ignores errors, the "NUMA is
not supported by this machine-type" is now ignored, too.  But that
error is as unexpected there as any other.  Change it to abort on
error instead.

Fixes: f3be67812c226162f86ce92634bd913714445420
Cc: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20181017082702.5581-16-armbru@redhat.com>
---
 numa.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/numa.c b/numa.c
index 81542d4ebb..1d7c49ad43 100644
--- a/numa.c
+++ b/numa.c
@@ -60,6 +60,7 @@ NodeInfo numa_info[MAX_NODES];
 static void parse_numa_node(MachineState *ms, NumaNodeOptions *node,
                             Error **errp)
 {
+    Error *err = NULL;
     uint16_t nodenr;
     uint16List *cpus = NULL;
     MachineClass *mc = MACHINE_GET_CLASS(ms);
@@ -82,8 +83,8 @@ static void parse_numa_node(MachineState *ms, NumaNodeOptions *node,
     }
 
     if (!mc->cpu_index_to_instance_props || !mc->get_default_cpu_node_id) {
-        error_report("NUMA is not supported by this machine-type");
-        exit(1);
+        error_setg(errp, "NUMA is not supported by this machine-type");
+        return;
     }
     for (cpus = node->cpus; cpus; cpus = cpus->next) {
         CpuInstanceProperties props;
@@ -97,7 +98,11 @@ static void parse_numa_node(MachineState *ms, NumaNodeOptions *node,
         props = mc->cpu_index_to_instance_props(ms, cpus->value);
         props.node_id = nodenr;
         props.has_node_id = true;
-        machine_set_cpu_numa_node(ms, &props, &error_fatal);
+        machine_set_cpu_numa_node(ms, &props, &err);
+        if (err) {
+            error_propagate(errp, err);
+            return;
+        }
     }
 
     if (node->has_mem && node->has_memdev) {
@@ -367,7 +372,7 @@ void numa_complete_configuration(MachineState *ms)
     if (ms->ram_slots > 0 && nb_numa_nodes == 0 &&
         mc->auto_enable_numa_with_memhp) {
             NumaNodeOptions node = { };
-            parse_numa_node(ms, &node, NULL);
+            parse_numa_node(ms, &node, &error_abort);
     }
 
     assert(max_numa_nodeid <= MAX_NODES);
-- 
2.17.2

[Qemu-devel] [PULL 18/40] xen/pt: Fix incomplete conversion to realize()

[Markus Armbruster]

The conversion of "xen-pci-passthrough" to realize() (commit
5a11d0f7549, v2.6.0) neglected to convert the xen_pt_config_init()
error path.  If xen_pt_config_init() fails, xen_pt_realize() reports
the error, then returns success without completing its job.  I don't
know the exact impact, but it can't be good.

Belatedly convert the error path.

Fixes: 5a11d0f7549e24a10e178a9dc8ff5e698031d9a6
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Anthony Perard <anthony.perard@citrix.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Anthony PERARD <anthony.perard@citrix.com>
Message-Id: <20181017082702.5581-17-armbru@redhat.com>
---
 hw/xen/xen_pt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/xen/xen_pt.c b/hw/xen/xen_pt.c
index e5a6eff44f..f1f3a3727c 100644
--- a/hw/xen/xen_pt.c
+++ b/hw/xen/xen_pt.c
@@ -830,7 +830,7 @@ static void xen_pt_realize(PCIDevice *d, Error **errp)
     xen_pt_config_init(s, &err);
     if (err) {
         error_append_hint(&err, "PCI Config space initialisation failed");
-        error_report_err(err);
+        error_propagate(errp, err);
         rc = -1;
         goto err_out;
     }
-- 
2.17.2

[Qemu-devel] [PULL 19/40] seccomp: Clean up error reporting in parse_sandbox()

[Markus Armbruster]

Calling error_report() in a function that takes an Error ** argument
is suspicious.  parse_sandbox() does that, and then fails without
setting an error.  Its caller main(), via qemu_opts_foreach(), is fine
with it, but clean it up anyway.

Cc: Eduardo Otubo <otubo@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Eduardo Otubo <otubo@redhat.com>
Message-Id: <20181017082702.5581-18-armbru@redhat.com>
---
 qemu-seccomp.c | 18 +++++++++---------
 vl.c           |  4 ++--
 2 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/qemu-seccomp.c b/qemu-seccomp.c
index 1baa5c69ed..5c73e6ad05 100644
--- a/qemu-seccomp.c
+++ b/qemu-seccomp.c
@@ -12,11 +12,12 @@
  * Contributions after 2012-01-13 are licensed under the terms of the
  * GNU GPL, version 2 or (at your option) any later version.
  */
+
 #include "qemu/osdep.h"
+#include "qapi/error.h"
 #include "qemu/config-file.h"
 #include "qemu/option.h"
 #include "qemu/module.h"
-#include "qemu/error-report.h"
 #include <sys/prctl.h>
 #include <seccomp.h>
 #include "sysemu/seccomp.h"
@@ -190,7 +191,7 @@ int parse_sandbox(void *opaque, QemuOpts *opts, Error **errp)
                  * to provide a little bit of consistency for
                  * the command line */
             } else {
-                error_report("invalid argument for obsolete");
+                error_setg(errp, "invalid argument for obsolete");
                 return -1;
             }
         }
@@ -205,14 +206,13 @@ int parse_sandbox(void *opaque, QemuOpts *opts, Error **errp)
                 /* calling prctl directly because we're
                  * not sure if host has CAP_SYS_ADMIN set*/
                 if (prctl(PR_SET_NO_NEW_PRIVS, 1)) {
-                    error_report("failed to set no_new_privs "
-                                 "aborting");
+                    error_setg(errp, "failed to set no_new_privs aborting");
                     return -1;
                 }
             } else if (g_str_equal(value, "allow")) {
                 /* default value */
             } else {
-                error_report("invalid argument for elevateprivileges");
+                error_setg(errp, "invalid argument for elevateprivileges");
                 return -1;
             }
         }
@@ -224,7 +224,7 @@ int parse_sandbox(void *opaque, QemuOpts *opts, Error **errp)
             } else if (g_str_equal(value, "allow")) {
                 /* default value */
             } else {
-                error_report("invalid argument for spawn");
+                error_setg(errp, "invalid argument for spawn");
                 return -1;
             }
         }
@@ -236,14 +236,14 @@ int parse_sandbox(void *opaque, QemuOpts *opts, Error **errp)
             } else if (g_str_equal(value, "allow")) {
                 /* default value */
             } else {
-                error_report("invalid argument for resourcecontrol");
+                error_setg(errp, "invalid argument for resourcecontrol");
                 return -1;
             }
         }
 
         if (seccomp_start(seccomp_opts) < 0) {
-            error_report("failed to install seccomp syscall filter "
-                         "in the kernel");
+            error_setg(errp, "failed to install seccomp syscall filter "
+                       "in the kernel");
             return -1;
         }
     }
diff --git a/vl.c b/vl.c
index db83cfe2e9..d7b604c97e 100644
--- a/vl.c
+++ b/vl.c
@@ -3973,8 +3973,8 @@ int main(int argc, char **argv, char **envp)
 
 #ifdef CONFIG_SECCOMP
     olist = qemu_find_opts_err("sandbox", NULL);
-    if (olist && qemu_opts_foreach(olist, parse_sandbox, NULL, NULL)) {
-        exit(1);
+    if (olist) {
+        qemu_opts_foreach(olist, parse_sandbox, NULL, &error_fatal);
     }
 #endif
 
-- 
2.17.2

[Qemu-devel] [PULL 20/40] vl: Clean up error reporting in parse_add_fd()

[Markus Armbruster]

Calling error_report() in a function that takes an Error ** argument
is suspicious.  parse_add_fd() does that, and then fails without
setting an error.  Its caller main(), via qemu_opts_foreach(), is fine
with it, but clean it up anyway.

Also change call of cleanup_add_fd(), which can't fail, for symmetry.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20181017082702.5581-19-armbru@redhat.com>
---
 vl.c | 22 +++++++++-------------
 1 file changed, 9 insertions(+), 13 deletions(-)

diff --git a/vl.c b/vl.c
index d7b604c97e..87ad2e7de7 100644
--- a/vl.c
+++ b/vl.c
@@ -1059,12 +1059,12 @@ static int parse_add_fd(void *opaque, QemuOpts *opts, Error **errp)
     fd_opaque = qemu_opt_get(opts, "opaque");
 
     if (fd < 0) {
-        error_report("fd option is required and must be non-negative");
+        error_setg(errp, "fd option is required and must be non-negative");
         return -1;
     }
 
     if (fd <= STDERR_FILENO) {
-        error_report("fd cannot be a standard I/O stream");
+        error_setg(errp, "fd cannot be a standard I/O stream");
         return -1;
     }
 
@@ -1074,12 +1074,12 @@ static int parse_add_fd(void *opaque, QemuOpts *opts, Error **errp)
      */
     flags = fcntl(fd, F_GETFD);
     if (flags == -1 || (flags & FD_CLOEXEC)) {
-        error_report("fd is not valid or already in use");
+        error_setg(errp, "fd is not valid or already in use");
         return -1;
     }
 
     if (fdset_id < 0) {
-        error_report("set option is required and must be non-negative");
+        error_setg(errp, "set option is required and must be non-negative");
         return -1;
     }
 
@@ -1092,7 +1092,7 @@ static int parse_add_fd(void *opaque, QemuOpts *opts, Error **errp)
     }
 #endif
     if (dupfd == -1) {
-        error_report("error duplicating fd: %s", strerror(errno));
+        error_setg(errp, "error duplicating fd: %s", strerror(errno));
         return -1;
     }
 
@@ -3984,15 +3984,11 @@ int main(int argc, char **argv, char **envp)
     }
 
 #ifndef _WIN32
-    if (qemu_opts_foreach(qemu_find_opts("add-fd"),
-                          parse_add_fd, NULL, NULL)) {
-        exit(1);
-    }
+    qemu_opts_foreach(qemu_find_opts("add-fd"),
+                      parse_add_fd, NULL, &error_fatal);
 
-    if (qemu_opts_foreach(qemu_find_opts("add-fd"),
-                          cleanup_add_fd, NULL, NULL)) {
-        exit(1);
-    }
+    qemu_opts_foreach(qemu_find_opts("add-fd"),
+                      cleanup_add_fd, NULL, &error_fatal);
 #endif
 
     current_machine = MACHINE(object_new(object_class_get_name(
-- 
2.17.2

[Qemu-devel] [PULL 21/40] qom: Clean up error reporting in user_creatable_add_opts_foreach()

[Markus Armbruster]

Calling error_report() in a function that takes an Error ** argument
is suspicious.  user_creatable_add_opts_foreach() does that, and then
fails without setting an error.  Its caller main(), via
qemu_opts_foreach(), is fine with it, but clean it up anyway.

Cc: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20181017082702.5581-20-armbru@redhat.com>
---
 qemu-io.c               |  8 +++-----
 qemu-nbd.c              |  8 +++-----
 qom/object_interfaces.c |  4 +---
 vl.c                    | 16 ++++++----------
 4 files changed, 13 insertions(+), 23 deletions(-)

diff --git a/qemu-io.c b/qemu-io.c
index 13829f5e21..6df7731af4 100644
--- a/qemu-io.c
+++ b/qemu-io.c
@@ -620,11 +620,9 @@ int main(int argc, char **argv)
         exit(1);
     }
 
-    if (qemu_opts_foreach(&qemu_object_opts,
-                          user_creatable_add_opts_foreach,
-                          NULL, NULL)) {
-        exit(1);
-    }
+    qemu_opts_foreach(&qemu_object_opts,
+                      user_creatable_add_opts_foreach,
+                      NULL, &error_fatal);
 
     if (!trace_init_backends()) {
         exit(1);
diff --git a/qemu-nbd.c b/qemu-nbd.c
index 7874bc973c..ca7109652e 100644
--- a/qemu-nbd.c
+++ b/qemu-nbd.c
@@ -766,11 +766,9 @@ int main(int argc, char **argv)
         exit(EXIT_FAILURE);
     }
 
-    if (qemu_opts_foreach(&qemu_object_opts,
-                          user_creatable_add_opts_foreach,
-                          NULL, NULL)) {
-        exit(EXIT_FAILURE);
-    }
+    qemu_opts_foreach(&qemu_object_opts,
+                      user_creatable_add_opts_foreach,
+                      NULL, &error_fatal);
 
     if (!trace_init_backends()) {
         exit(1);
diff --git a/qom/object_interfaces.c b/qom/object_interfaces.c
index 941fd63afd..97b79b48bb 100644
--- a/qom/object_interfaces.c
+++ b/qom/object_interfaces.c
@@ -143,7 +143,6 @@ int user_creatable_add_opts_foreach(void *opaque, QemuOpts *opts, Error **errp)
 {
     bool (*type_opt_predicate)(const char *, QemuOpts *) = opaque;
     Object *obj = NULL;
-    Error *err = NULL;
     const char *type;
 
     type = qemu_opt_get(opts, "qom-type");
@@ -152,9 +151,8 @@ int user_creatable_add_opts_foreach(void *opaque, QemuOpts *opts, Error **errp)
         return 0;
     }
 
-    obj = user_creatable_add_opts(opts, &err);
+    obj = user_creatable_add_opts(opts, errp);
     if (!obj) {
-        error_report_err(err);
         return -1;
     }
     object_unref(obj);
diff --git a/vl.c b/vl.c
index 87ad2e7de7..f8a13d7070 100644
--- a/vl.c
+++ b/vl.c
@@ -4229,11 +4229,9 @@ int main(int argc, char **argv, char **envp)
     page_size_init();
     socket_init();
 
-    if (qemu_opts_foreach(qemu_find_opts("object"),
-                          user_creatable_add_opts_foreach,
-                          object_create_initial, NULL)) {
-        exit(1);
-    }
+    qemu_opts_foreach(qemu_find_opts("object"),
+                      user_creatable_add_opts_foreach,
+                      object_create_initial, &error_fatal);
 
     if (qemu_opts_foreach(qemu_find_opts("chardev"),
                           chardev_init_func, NULL, NULL)) {
@@ -4364,11 +4362,9 @@ int main(int argc, char **argv, char **envp)
         exit(1);
     }
 
-    if (qemu_opts_foreach(qemu_find_opts("object"),
-                          user_creatable_add_opts_foreach,
-                          object_create_delayed, NULL)) {
-        exit(1);
-    }
+    qemu_opts_foreach(qemu_find_opts("object"),
+                      user_creatable_add_opts_foreach,
+                      object_create_delayed, &error_fatal);
 
     if (tpm_init() < 0) {
         exit(1);
-- 
2.17.2

[Qemu-devel] [PULL 22/40] vl: Clean up error reporting in chardev_init_func()

[Markus Armbruster]

Calling error_report() in a function that takes an Error ** argument
is suspicious.  chardev_init_func() does that, and then fails without
setting an error.  Its caller main(), via qemu_opts_foreach(), is fine
with it, but clean it up anyway.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20181017082702.5581-21-armbru@redhat.com>
---
 vl.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/vl.c b/vl.c
index f8a13d7070..d84857c064 100644
--- a/vl.c
+++ b/vl.c
@@ -2239,7 +2239,7 @@ static int chardev_init_func(void *opaque, QemuOpts *opts, Error **errp)
 
     if (!qemu_chr_new_from_opts(opts, &local_err)) {
         if (local_err) {
-            error_report_err(local_err);
+            error_propagate(errp, local_err);
             return -1;
         }
         exit(0);
@@ -4233,10 +4233,8 @@ int main(int argc, char **argv, char **envp)
                       user_creatable_add_opts_foreach,
                       object_create_initial, &error_fatal);
 
-    if (qemu_opts_foreach(qemu_find_opts("chardev"),
-                          chardev_init_func, NULL, NULL)) {
-        exit(1);
-    }
+    qemu_opts_foreach(qemu_find_opts("chardev"),
+                      chardev_init_func, NULL, &error_fatal);
 
 #ifdef CONFIG_VIRTFS
     if (qemu_opts_foreach(qemu_find_opts("fsdev"),
-- 
2.17.2

[Qemu-devel] [PULL 23/40] vl: Clean up error reporting in machine_set_property()

[Markus Armbruster]

Calling error_report() in a function that takes an Error ** argument
is suspicious.  machine_set_property() does that, and then fails without
setting an error.  Its caller main(), via qemu_opts_foreach(), is fine
with it, but clean it up anyway.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20181017082702.5581-22-armbru@redhat.com>
---
 vl.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/vl.c b/vl.c
index d84857c064..0b69871295 100644
--- a/vl.c
+++ b/vl.c
@@ -2677,7 +2677,7 @@ static int machine_set_property(void *opaque,
     g_free(qom_name);
 
     if (local_err) {
-        error_report_err(local_err);
+        error_propagate(errp, local_err);
         return -1;
     }
 
@@ -4249,11 +4249,8 @@ int main(int argc, char **argv, char **envp)
     }
 
     machine_opts = qemu_get_machine_opts();
-    if (qemu_opt_foreach(machine_opts, machine_set_property, current_machine,
-                         NULL)) {
-        object_unref(OBJECT(current_machine));
-        exit(1);
-    }
+    qemu_opt_foreach(machine_opts, machine_set_property, current_machine,
+                     &error_fatal);
 
     configure_accelerator(current_machine);
 
-- 
2.17.2

[Qemu-devel] [PULL 24/40] vl: Clean up error reporting in mon_init_func()

[Markus Armbruster]

Calling error_report() in a function that takes an Error ** argument
is suspicious.  mon_init_func() does that, and then fails without
setting an error.  Its caller main(), via qemu_opts_foreach(), is fine
with it, but clean it up anyway.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20181017082702.5581-23-armbru@redhat.com>
---
 vl.c | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/vl.c b/vl.c
index 0b69871295..6830fc8d8f 100644
--- a/vl.c
+++ b/vl.c
@@ -2270,8 +2270,8 @@ static int mon_init_func(void *opaque, QemuOpts *opts, Error **errp)
     } else if (strcmp(mode, "control") == 0) {
         flags = MONITOR_USE_CONTROL;
     } else {
-        error_report("unknown monitor mode \"%s\"", mode);
-        exit(1);
+        error_setg(errp, "unknown monitor mode \"%s\"", mode);
+        return -1;
     }
 
     if (qemu_opt_get_bool(opts, "pretty", 0))
@@ -2285,8 +2285,8 @@ static int mon_init_func(void *opaque, QemuOpts *opts, Error **errp)
     chardev = qemu_opt_get(opts, "chardev");
     chr = qemu_chr_find(chardev);
     if (chr == NULL) {
-        error_report("chardev \"%s\" not found", chardev);
-        exit(1);
+        error_setg(errp, "chardev \"%s\" not found", chardev);
+        return -1;
     }
 
     monitor_init(chr, flags);
@@ -4413,10 +4413,8 @@ int main(int argc, char **argv, char **envp)
     default_drive(default_floppy, snapshot, IF_FLOPPY, 0, FD_OPTS);
     default_drive(default_sdcard, snapshot, IF_SD, 0, SD_OPTS);
 
-    if (qemu_opts_foreach(qemu_find_opts("mon"),
-                          mon_init_func, NULL, NULL)) {
-        exit(1);
-    }
+    qemu_opts_foreach(qemu_find_opts("mon"),
+                      mon_init_func, NULL, &error_fatal);
 
     if (foreach_device_config(DEV_SERIAL, serial_parse) < 0)
         exit(1);
-- 
2.17.2

[Qemu-devel] [PULL 25/40] vl: Clean up error reporting in parse_fw_cfg()

[Markus Armbruster]

Calling error_report() in a function that takes an Error ** argument
is suspicious.  parse_fw_cfg() does that, and then fails without
setting an error.  Its caller main(), via qemu_opts_foreach(), is fine
with it, but clean it up anyway.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20181017082702.5581-24-armbru@redhat.com>
---
 vl.c | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/vl.c b/vl.c
index 6830fc8d8f..92d15711a5 100644
--- a/vl.c
+++ b/vl.c
@@ -2174,7 +2174,7 @@ static int parse_fw_cfg(void *opaque, QemuOpts *opts, Error **errp)
     FWCfgState *fw_cfg = (FWCfgState *) opaque;
 
     if (fw_cfg == NULL) {
-        error_report("fw_cfg device not available");
+        error_setg(errp, "fw_cfg device not available");
         return -1;
     }
     name = qemu_opt_get(opts, "name");
@@ -2183,15 +2183,16 @@ static int parse_fw_cfg(void *opaque, QemuOpts *opts, Error **errp)
 
     /* we need name and either a file or the content string */
     if (!(nonempty_str(name) && (nonempty_str(file) || nonempty_str(str)))) {
-        error_report("invalid argument(s)");
+        error_setg(errp, "invalid argument(s)");
         return -1;
     }
     if (nonempty_str(file) && nonempty_str(str)) {
-        error_report("file and string are mutually exclusive");
+        error_setg(errp, "file and string are mutually exclusive");
         return -1;
     }
     if (strlen(name) > FW_CFG_MAX_FILE_PATH - 1) {
-        error_report("name too long (max. %d char)", FW_CFG_MAX_FILE_PATH - 1);
+        error_setg(errp, "name too long (max. %d char)",
+                   FW_CFG_MAX_FILE_PATH - 1);
         return -1;
     }
     if (strncmp(name, "opt/", 4) != 0) {
@@ -2203,7 +2204,7 @@ static int parse_fw_cfg(void *opaque, QemuOpts *opts, Error **errp)
         buf = g_memdup(str, size);
     } else {
         if (!g_file_get_contents(file, &buf, &size, NULL)) {
-            error_report("can't load %s", file);
+            error_setg(errp, "can't load %s", file);
             return -1;
         }
     }
@@ -4477,10 +4478,8 @@ int main(int argc, char **argv, char **envp)
         hax_sync_vcpus();
     }
 
-    if (qemu_opts_foreach(qemu_find_opts("fw_cfg"),
-                          parse_fw_cfg, fw_cfg_find(), NULL) != 0) {
-        exit(1);
-    }
+    qemu_opts_foreach(qemu_find_opts("fw_cfg"),
+                      parse_fw_cfg, fw_cfg_find(), &error_fatal);
 
     /* init USB devices */
     if (machine_usb(current_machine)) {
-- 
2.17.2

[Qemu-devel] [PULL 26/40] vl: Clean up error reporting in device_init_func()

[Markus Armbruster]

Calling error_report() in a function that takes an Error ** argument
is suspicious.  device_init_func() does that, and then fails without
setting an error.  Its caller main(), via qemu_opts_foreach(), is fine
with it, but clean it up anyway.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20181017082702.5581-25-armbru@redhat.com>
---
 vl.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/vl.c b/vl.c
index 92d15711a5..1fa1e14853 100644
--- a/vl.c
+++ b/vl.c
@@ -2222,12 +2222,10 @@ static int device_help_func(void *opaque, QemuOpts *opts, Error **errp)
 
 static int device_init_func(void *opaque, QemuOpts *opts, Error **errp)
 {
-    Error *err = NULL;
     DeviceState *dev;
 
-    dev = qdev_device_add(opts, &err);
+    dev = qdev_device_add(opts, errp);
     if (!dev) {
-        error_report_err(err);
         return -1;
     }
     object_unref(OBJECT(dev));
@@ -4492,10 +4490,8 @@ int main(int argc, char **argv, char **envp)
 
     /* init generic devices */
     rom_set_order_override(FW_CFG_ORDER_OVERRIDE_DEVICE);
-    if (qemu_opts_foreach(qemu_find_opts("device"),
-                          device_init_func, NULL, NULL)) {
-        exit(1);
-    }
+    qemu_opts_foreach(qemu_find_opts("device"),
+                      device_init_func, NULL, &error_fatal);
 
     cpu_synchronize_all_post_init();
 
-- 
2.17.2

[Qemu-devel] [PULL 27/40] ui/keymaps: Fix handling of erroneous include files

[Markus Armbruster]

While errors in the keyboard layout named with -k are fatal, errors in
included files are reported, but otherwise ignored:

    $ cat worst
    include bad
    include worse
    $ ls -l bad worse
    ls: cannot access 'bad': No such file or directory
    ls: cannot access 'worse': No such file or directory
    $ qemu-system-x86_64 -nodefaults -S -monitor stdio -display vnc=:0 -k bad
    QEMU 3.0.50 monitor - type 'help' for more information
    (qemu) Could not read keymap file: 'bad'
    $ qemu-system-x86_64 -nodefaults -S -monitor stdio -display vnc=:0 -k worst
    QEMU 3.0.50 monitor - type 'help' for more information
    (qemu) Could not read keymap file: 'bad'
    Could not read keymap file: 'worse'

Fix that.

Note that parse_keyboard_layout() allocates the keymap, except when
it's parsing an include file.  To keep error handling simple, move the
memory management to its caller init_keyboard_layout().

Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20181017082702.5581-26-armbru@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
---
 ui/keymaps.c | 35 +++++++++++++++++++++++------------
 1 file changed, 23 insertions(+), 12 deletions(-)

diff --git a/ui/keymaps.c b/ui/keymaps.c
index 43fe604724..b05fb028dc 100644
--- a/ui/keymaps.c
+++ b/ui/keymaps.c
@@ -79,10 +79,11 @@ static void add_keysym(char *line, int keysym, int keycode, kbd_layout_t *k)
     trace_keymap_add(keysym, keycode, line);
 }
 
-static kbd_layout_t *parse_keyboard_layout(const name2keysym_t *table,
-                                           const char *language,
-                                           kbd_layout_t *k)
+static int parse_keyboard_layout(kbd_layout_t *k,
+                                 const name2keysym_t *table,
+                                 const char *language)
 {
+    int ret;
     FILE *f;
     char * filename;
     char line[1024];
@@ -95,12 +96,7 @@ static kbd_layout_t *parse_keyboard_layout(const name2keysym_t *table,
     g_free(filename);
     if (!f) {
         fprintf(stderr, "Could not read keymap file: '%s'\n", language);
-        return NULL;
-    }
-
-    if (!k) {
-        k = g_new0(kbd_layout_t, 1);
-        k->hash = g_hash_table_new(NULL, NULL);
+        return -1;
     }
 
     for(;;) {
@@ -118,7 +114,10 @@ static kbd_layout_t *parse_keyboard_layout(const name2keysym_t *table,
             continue;
         }
         if (!strncmp(line, "include ", 8)) {
-            parse_keyboard_layout(table, line + 8, k);
+            if (parse_keyboard_layout(k, table, line + 8) < 0) {
+                ret = -1;
+                goto out;
+            }
         } else {
             int offset = 0;
             while (line[offset] != 0 &&
@@ -164,15 +163,27 @@ static kbd_layout_t *parse_keyboard_layout(const name2keysym_t *table,
             }
         }
     }
+
+    ret = 0;
+out:
     fclose(f);
-    return k;
+    return ret;
 }
 
 
 kbd_layout_t *init_keyboard_layout(const name2keysym_t *table,
                                    const char *language)
 {
-    return parse_keyboard_layout(table, language, NULL);
+    kbd_layout_t *k;
+
+    k = g_new0(kbd_layout_t, 1);
+    k->hash = g_hash_table_new(NULL, NULL);
+    if (parse_keyboard_layout(k, table, language) < 0) {
+        g_hash_table_unref(k->hash);
+        g_free(k);
+        return NULL;
+    }
+    return k;
 }
 
 
-- 
2.17.2

[Qemu-devel] [PULL 28/40] ui: Convert vnc_display_init(), init_keyboard_layout() to Error

[Markus Armbruster]

From: Fei Li <fli@suse.com>

Signed-off-by: Fei Li <fli@suse.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20181017082702.5581-27-armbru@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
---
 include/ui/console.h |  2 +-
 ui/curses.c          |  6 +++---
 ui/keymaps.c         | 11 ++++++-----
 ui/keymaps.h         |  2 +-
 ui/sdl.c             |  6 +++---
 ui/vnc.c             | 15 ++++++++++-----
 6 files changed, 24 insertions(+), 18 deletions(-)

diff --git a/include/ui/console.h b/include/ui/console.h
index fb969caf70..c17803c530 100644
--- a/include/ui/console.h
+++ b/include/ui/console.h
@@ -453,7 +453,7 @@ void qemu_display_early_init(DisplayOptions *opts);
 void qemu_display_init(DisplayState *ds, DisplayOptions *opts);
 
 /* vnc.c */
-void vnc_display_init(const char *id);
+void vnc_display_init(const char *id, Error **errp);
 void vnc_display_open(const char *id, Error **errp);
 void vnc_display_add_client(const char *id, int csock, bool skipauth);
 int vnc_display_password(const char *id, const char *password);
diff --git a/ui/curses.c b/ui/curses.c
index 59d819fd4d..f4e7a12f74 100644
--- a/ui/curses.c
+++ b/ui/curses.c
@@ -28,6 +28,7 @@
 #include <termios.h>
 #endif
 
+#include "qapi/error.h"
 #include "qemu-common.h"
 #include "ui/console.h"
 #include "ui/input.h"
@@ -421,9 +422,8 @@ static void curses_keyboard_setup(void)
         keyboard_layout = "en-us";
 #endif
     if(keyboard_layout) {
-        kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
-        if (!kbd_layout)
-            exit(1);
+        kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout,
+                                          &error_fatal);
     }
 }
 
diff --git a/ui/keymaps.c b/ui/keymaps.c
index b05fb028dc..085889b555 100644
--- a/ui/keymaps.c
+++ b/ui/keymaps.c
@@ -27,6 +27,7 @@
 #include "sysemu/sysemu.h"
 #include "trace.h"
 #include "qemu/error-report.h"
+#include "qapi/error.h"
 
 struct keysym2code {
     uint32_t count;
@@ -81,7 +82,7 @@ static void add_keysym(char *line, int keysym, int keycode, kbd_layout_t *k)
 
 static int parse_keyboard_layout(kbd_layout_t *k,
                                  const name2keysym_t *table,
-                                 const char *language)
+                                 const char *language, Error **errp)
 {
     int ret;
     FILE *f;
@@ -95,7 +96,7 @@ static int parse_keyboard_layout(kbd_layout_t *k,
     f = filename ? fopen(filename, "r") : NULL;
     g_free(filename);
     if (!f) {
-        fprintf(stderr, "Could not read keymap file: '%s'\n", language);
+        error_setg(errp, "could not read keymap file: '%s'", language);
         return -1;
     }
 
@@ -114,7 +115,7 @@ static int parse_keyboard_layout(kbd_layout_t *k,
             continue;
         }
         if (!strncmp(line, "include ", 8)) {
-            if (parse_keyboard_layout(k, table, line + 8) < 0) {
+            if (parse_keyboard_layout(k, table, line + 8, errp) < 0) {
                 ret = -1;
                 goto out;
             }
@@ -172,13 +173,13 @@ out:
 
 
 kbd_layout_t *init_keyboard_layout(const name2keysym_t *table,
-                                   const char *language)
+                                   const char *language, Error **errp)
 {
     kbd_layout_t *k;
 
     k = g_new0(kbd_layout_t, 1);
     k->hash = g_hash_table_new(NULL, NULL);
-    if (parse_keyboard_layout(k, table, language) < 0) {
+    if (parse_keyboard_layout(k, table, language, errp) < 0) {
         g_hash_table_unref(k->hash);
         g_free(k);
         return NULL;
diff --git a/ui/keymaps.h b/ui/keymaps.h
index 0693588225..98213a4191 100644
--- a/ui/keymaps.h
+++ b/ui/keymaps.h
@@ -53,7 +53,7 @@ typedef struct {
 typedef struct kbd_layout_t kbd_layout_t;
 
 kbd_layout_t *init_keyboard_layout(const name2keysym_t *table,
-                                   const char *language);
+                                   const char *language, Error **errp);
 int keysym2scancode(kbd_layout_t *k, int keysym,
                     bool shift, bool altgr, bool ctrl);
 int keycode_is_keypad(kbd_layout_t *k, int keycode);
diff --git a/ui/sdl.c b/ui/sdl.c
index a5fd503c25..190b16f575 100644
--- a/ui/sdl.c
+++ b/ui/sdl.c
@@ -29,6 +29,7 @@
 #include <SDL.h>
 #include <SDL_syswm.h>
 
+#include "qapi/error.h"
 #include "qemu-common.h"
 #include "qemu/cutils.h"
 #include "ui/console.h"
@@ -917,9 +918,8 @@ static void sdl1_display_init(DisplayState *ds, DisplayOptions *o)
         keyboard_layout = "en-us";
 #endif
     if(keyboard_layout) {
-        kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
-        if (!kbd_layout)
-            exit(1);
+        kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout,
+                                          &error_fatal);
     }
 
     g_printerr("Running QEMU with SDL 1.2 is deprecated, and will be removed\n"
diff --git a/ui/vnc.c b/ui/vnc.c
index cf221c83cc..98e3d3b1d8 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -3205,7 +3205,7 @@ static const DisplayChangeListenerOps dcl_ops = {
     .dpy_cursor_define    = vnc_dpy_cursor_define,
 };
 
-void vnc_display_init(const char *id)
+void vnc_display_init(const char *id, Error **errp)
 {
     VncDisplay *vd;
 
@@ -3222,13 +3222,14 @@ void vnc_display_init(const char *id)
 
     if (keyboard_layout) {
         trace_vnc_key_map_init(keyboard_layout);
-        vd->kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
+        vd->kbd_layout = init_keyboard_layout(name2keysym,
+                                              keyboard_layout, errp);
     } else {
-        vd->kbd_layout = init_keyboard_layout(name2keysym, "en-us");
+        vd->kbd_layout = init_keyboard_layout(name2keysym, "en-us", errp);
     }
 
     if (!vd->kbd_layout) {
-        exit(1);
+        return;
     }
 
     vd->share_policy = VNC_SHARE_POLICY_ALLOW_EXCLUSIVE;
@@ -4079,7 +4080,11 @@ int vnc_init_func(void *opaque, QemuOpts *opts, Error **errp)
     char *id = (char *)qemu_opts_id(opts);
 
     assert(id);
-    vnc_display_init(id);
+    vnc_display_init(id, &local_err);
+    if (local_err) {
+        error_report_err(local_err);
+        exit(1);
+    }
     vnc_display_open(id, &local_err);
     if (local_err != NULL) {
         error_reportf_err(local_err, "Failed to start VNC server: ");
-- 
2.17.2

[Qemu-devel] [PULL 29/40] vnc: Clean up error reporting in vnc_init_func()

[Markus Armbruster]

Calling error_report() in a function that takes an Error ** argument
is suspicious.  vnc_init_func() does that, and then fails without
setting an error.  Its caller main(), via qemu_opts_foreach(), is fine
with it, but clean it up anyway.

While there, drop a "Failed to start VNC server: " error message
prefix that doesn't really add value.

Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20181017082702.5581-28-armbru@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
---
 ui/vnc.c | 8 ++++----
 vl.c     | 2 +-
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/ui/vnc.c b/ui/vnc.c
index 98e3d3b1d8..0c1b477425 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -4082,13 +4082,13 @@ int vnc_init_func(void *opaque, QemuOpts *opts, Error **errp)
     assert(id);
     vnc_display_init(id, &local_err);
     if (local_err) {
-        error_report_err(local_err);
-        exit(1);
+        error_propagate(errp, local_err);
+        return -1;
     }
     vnc_display_open(id, &local_err);
     if (local_err != NULL) {
-        error_reportf_err(local_err, "Failed to start VNC server: ");
-        exit(1);
+        error_propagate(errp, local_err);
+        return -1;
     }
     return 0;
 }
diff --git a/vl.c b/vl.c
index 1fa1e14853..2ff0c5f32d 100644
--- a/vl.c
+++ b/vl.c
@@ -4527,7 +4527,7 @@ int main(int argc, char **argv, char **envp)
     /* init remote displays */
 #ifdef CONFIG_VNC
     qemu_opts_foreach(qemu_find_opts("vnc"),
-                      vnc_init_func, NULL, NULL);
+                      vnc_init_func, NULL, &error_fatal);
 #endif
 
     if (using_spice) {
-- 
2.17.2

[Qemu-devel] [PULL 30/40] numa: Clean up error reporting in parse_numa()

[Markus Armbruster]

Calling error_report() in a function that takes an Error ** argument
is suspicious.  parse_numa() does that, and then fails without setting
an error.  Its caller main(), via qemu_opts_foreach(), is fine with
it, but clean it up anyway.

While there, give parse_numa() internal linkage.

Cc: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20181017082702.5581-29-armbru@redhat.com>
---
 include/sysemu/numa.h | 1 -
 numa.c                | 8 +++-----
 2 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/include/sysemu/numa.h b/include/sysemu/numa.h
index 7a0ae751aa..21713b7e2f 100644
--- a/include/sysemu/numa.h
+++ b/include/sysemu/numa.h
@@ -22,7 +22,6 @@ struct NumaNodeMem {
 };
 
 extern NodeInfo numa_info[MAX_NODES];
-int parse_numa(void *opaque, QemuOpts *opts, Error **errp);
 void parse_numa_opts(MachineState *ms);
 void numa_complete_configuration(MachineState *ms);
 void query_numa_node_mem(NumaNodeMem node_mem[]);
diff --git a/numa.c b/numa.c
index 1d7c49ad43..50ec016013 100644
--- a/numa.c
+++ b/numa.c
@@ -215,7 +215,7 @@ end:
     error_propagate(errp, err);
 }
 
-int parse_numa(void *opaque, QemuOpts *opts, Error **errp)
+static int parse_numa(void *opaque, QemuOpts *opts, Error **errp)
 {
     NumaOptions *object = NULL;
     MachineState *ms = MACHINE(opaque);
@@ -239,7 +239,7 @@ int parse_numa(void *opaque, QemuOpts *opts, Error **errp)
 end:
     qapi_free_NumaOptions(object);
     if (err) {
-        error_report_err(err);
+        error_propagate(errp, err);
         return -1;
     }
 
@@ -444,9 +444,7 @@ void numa_complete_configuration(MachineState *ms)
 
 void parse_numa_opts(MachineState *ms)
 {
-    if (qemu_opts_foreach(qemu_find_opts("numa"), parse_numa, ms, NULL)) {
-        exit(1);
-    }
+    qemu_opts_foreach(qemu_find_opts("numa"), parse_numa, ms, &error_fatal);
 }
 
 void qmp_set_numa_node(NumaOptions *cmd, Error **errp)
-- 
2.17.2

[Qemu-devel] [PULL 31/40] tpm: Clean up error reporting in tpm_init_tpmdev()

[Markus Armbruster]

Calling error_report() in a function that takes an Error ** argument
is suspicious.  tpm_init_tpmdev() does that, and then fails without
setting an error.  Its caller main(), via tpm_init() and
qemu_opts_foreach(), is fine with it, but clean it up anyway.

Cc: Stefan Berger <stefanb@linux.vnet.ibm.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Message-Id: <20181017082702.5581-30-armbru@redhat.com>
---
 include/sysemu/tpm.h |  2 +-
 stubs/tpm.c          |  3 +--
 tpm.c                | 22 +++++++++-------------
 vl.c                 |  4 +---
 4 files changed, 12 insertions(+), 19 deletions(-)

diff --git a/include/sysemu/tpm.h b/include/sysemu/tpm.h
index 9ae1ab6da3..17a97ed77a 100644
--- a/include/sysemu/tpm.h
+++ b/include/sysemu/tpm.h
@@ -16,7 +16,7 @@
 #include "qom/object.h"
 
 int tpm_config_parse(QemuOptsList *opts_list, const char *optarg);
-int tpm_init(void);
+void tpm_init(void);
 void tpm_cleanup(void);
 
 typedef enum TPMVersion {
diff --git a/stubs/tpm.c b/stubs/tpm.c
index 6729bc8517..80939cd3db 100644
--- a/stubs/tpm.c
+++ b/stubs/tpm.c
@@ -9,9 +9,8 @@
 #include "qapi/qapi-commands-tpm.h"
 #include "sysemu/tpm.h"
 
-int tpm_init(void)
+void tpm_init(void)
 {
-    return 0;
 }
 
 void tpm_cleanup(void)
diff --git a/tpm.c b/tpm.c
index 93031723ad..9c9e20bbb7 100644
--- a/tpm.c
+++ b/tpm.c
@@ -89,19 +89,19 @@ static int tpm_init_tpmdev(void *dummy, QemuOpts *opts, Error **errp)
     int i;
 
     if (!QLIST_EMPTY(&tpm_backends)) {
-        error_report("Only one TPM is allowed.");
+        error_setg(errp, "Only one TPM is allowed.");
         return 1;
     }
 
     id = qemu_opts_id(opts);
     if (id == NULL) {
-        error_report(QERR_MISSING_PARAMETER, "id");
+        error_setg(errp, QERR_MISSING_PARAMETER, "id");
         return 1;
     }
 
     value = qemu_opt_get(opts, "type");
     if (!value) {
-        error_report(QERR_MISSING_PARAMETER, "type");
+        error_setg(errp, QERR_MISSING_PARAMETER, "type");
         tpm_display_backend_drivers();
         return 1;
     }
@@ -109,8 +109,8 @@ static int tpm_init_tpmdev(void *dummy, QemuOpts *opts, Error **errp)
     i = qapi_enum_parse(&TpmType_lookup, value, -1, NULL);
     be = i >= 0 ? tpm_be_find_by_type(i) : NULL;
     if (be == NULL) {
-        error_report(QERR_INVALID_PARAMETER_VALUE,
-                     "type", "a TPM backend type");
+        error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type",
+                   "a TPM backend type");
         tpm_display_backend_drivers();
         return 1;
     }
@@ -118,7 +118,7 @@ static int tpm_init_tpmdev(void *dummy, QemuOpts *opts, Error **errp)
     /* validate backend specific opts */
     qemu_opts_validate(opts, be->opts, &local_err);
     if (local_err) {
-        error_report_err(local_err);
+        error_propagate(errp, local_err);
         return 1;
     }
 
@@ -151,14 +151,10 @@ void tpm_cleanup(void)
  * Initialize the TPM. Process the tpmdev command line options describing the
  * TPM backend.
  */
-int tpm_init(void)
+void tpm_init(void)
 {
-    if (qemu_opts_foreach(qemu_find_opts("tpmdev"),
-                          tpm_init_tpmdev, NULL, NULL)) {
-        return -1;
-    }
-
-    return 0;
+    qemu_opts_foreach(qemu_find_opts("tpmdev"),
+                      tpm_init_tpmdev, NULL, &error_fatal);
 }
 
 /*
diff --git a/vl.c b/vl.c
index 2ff0c5f32d..2f265b9c74 100644
--- a/vl.c
+++ b/vl.c
@@ -4360,9 +4360,7 @@ int main(int argc, char **argv, char **envp)
                       user_creatable_add_opts_foreach,
                       object_create_delayed, &error_fatal);
 
-    if (tpm_init() < 0) {
-        exit(1);
-    }
+    tpm_init();
 
     /* init the bluetooth world */
     if (foreach_device_config(DEV_BT, bt_parse))
-- 
2.17.2

[Qemu-devel] [PULL 32/40] spice: Clean up error reporting in add_channel()

[Markus Armbruster]

Calling error_report() in a function that takes an Error ** argument
is suspicious.  add_channel() does that, and then exit()s.  Its caller
main(), via qemu_opts_foreach(), is fine with it, but clean it up
anyway.

Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20181017082702.5581-31-armbru@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
---
 ui/spice-core.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/ui/spice-core.c b/ui/spice-core.c
index a4fbbc3898..ebaae24643 100644
--- a/ui/spice-core.c
+++ b/ui/spice-core.c
@@ -597,9 +597,9 @@ static int add_channel(void *opaque, const char *name, const char *value,
     if (strcmp(name, "tls-channel") == 0) {
         int *tls_port = opaque;
         if (!*tls_port) {
-            error_report("spice: tried to setup tls-channel"
-                         " without specifying a TLS port");
-            exit(1);
+            error_setg(errp, "spice: tried to setup tls-channel"
+                       " without specifying a TLS port");
+            return -1;
         }
         security = SPICE_CHANNEL_SECURITY_SSL;
     }
@@ -615,8 +615,9 @@ static int add_channel(void *opaque, const char *name, const char *value,
         rc = spice_server_set_channel_security(spice_server, value, security);
     }
     if (rc != 0) {
-        error_report("spice: failed to set channel security for %s", value);
-        exit(1);
+        error_setg(errp, "spice: failed to set channel security for %s",
+                   value);
+        return -1;
     }
     return 0;
 }
@@ -787,7 +788,7 @@ void qemu_spice_init(void)
     spice_server_set_playback_compression
         (spice_server, qemu_opt_get_bool(opts, "playback-compression", 1));
 
-    qemu_opt_foreach(opts, add_channel, &tls_port, NULL);
+    qemu_opt_foreach(opts, add_channel, &tls_port, &error_fatal);
 
     spice_server_set_name(spice_server, qemu_name);
     spice_server_set_uuid(spice_server, (unsigned char *)&qemu_uuid);
-- 
2.17.2

[Qemu-devel] [PULL 33/40] fsdev: Clean up error reporting in qemu_fsdev_add()

[Markus Armbruster]

Calling error_report() from within a function that takes an Error **
argument is suspicious.  qemu_fsdev_add() does that, and its caller
fsdev_init_func() then fails without setting an error.  Its caller
main(), via qemu_opts_foreach(), is fine with it, but clean it up
anyway.

Cc: Greg Kurz <groug@kaod.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Greg Kurz <groug@kaod.org>
Message-Id: <20181017082702.5581-32-armbru@redhat.com>
---
 fsdev/qemu-fsdev-dummy.c |  2 +-
 fsdev/qemu-fsdev.c       | 12 +++++-------
 fsdev/qemu-fsdev.h       |  2 +-
 hw/9pfs/xen-9p-backend.c |  7 ++++++-
 vl.c                     |  8 +++-----
 5 files changed, 16 insertions(+), 15 deletions(-)

diff --git a/fsdev/qemu-fsdev-dummy.c b/fsdev/qemu-fsdev-dummy.c
index 6dc0fbc4c4..489cd29081 100644
--- a/fsdev/qemu-fsdev-dummy.c
+++ b/fsdev/qemu-fsdev-dummy.c
@@ -15,7 +15,7 @@
 #include "qemu/config-file.h"
 #include "qemu/module.h"
 
-int qemu_fsdev_add(QemuOpts *opts)
+int qemu_fsdev_add(QemuOpts *opts, Error **errp)
 {
     return 0;
 }
diff --git a/fsdev/qemu-fsdev.c b/fsdev/qemu-fsdev.c
index 8a4afbffbd..7a3b87cc9e 100644
--- a/fsdev/qemu-fsdev.c
+++ b/fsdev/qemu-fsdev.c
@@ -30,7 +30,7 @@ static FsDriverTable FsDrivers[] = {
     { .name = "proxy", .ops = &proxy_ops},
 };
 
-int qemu_fsdev_add(QemuOpts *opts)
+int qemu_fsdev_add(QemuOpts *opts, Error **errp)
 {
     int i;
     struct FsDriverListEntry *fsle;
@@ -38,10 +38,9 @@ int qemu_fsdev_add(QemuOpts *opts)
     const char *fsdriver = qemu_opt_get(opts, "fsdriver");
     const char *writeout = qemu_opt_get(opts, "writeout");
     bool ro = qemu_opt_get_bool(opts, "readonly", 0);
-    Error *local_err = NULL;
 
     if (!fsdev_id) {
-        error_report("fsdev: No id specified");
+        error_setg(errp, "fsdev: No id specified");
         return -1;
     }
 
@@ -53,11 +52,11 @@ int qemu_fsdev_add(QemuOpts *opts)
         }
 
         if (i == ARRAY_SIZE(FsDrivers)) {
-            error_report("fsdev: fsdriver %s not found", fsdriver);
+            error_setg(errp, "fsdev: fsdriver %s not found", fsdriver);
             return -1;
         }
     } else {
-        error_report("fsdev: No fsdriver specified");
+        error_setg(errp, "fsdev: No fsdriver specified");
         return -1;
     }
 
@@ -76,8 +75,7 @@ int qemu_fsdev_add(QemuOpts *opts)
     }
 
     if (fsle->fse.ops->parse_opts) {
-        if (fsle->fse.ops->parse_opts(opts, &fsle->fse, &local_err)) {
-            error_report_err(local_err);
+        if (fsle->fse.ops->parse_opts(opts, &fsle->fse, errp)) {
             g_free(fsle->fse.fsdev_id);
             g_free(fsle);
             return -1;
diff --git a/fsdev/qemu-fsdev.h b/fsdev/qemu-fsdev.h
index 65e4b1cfab..d9716b4144 100644
--- a/fsdev/qemu-fsdev.h
+++ b/fsdev/qemu-fsdev.h
@@ -38,7 +38,7 @@ typedef struct FsDriverListEntry {
     QTAILQ_ENTRY(FsDriverListEntry) next;
 } FsDriverListEntry;
 
-int qemu_fsdev_add(QemuOpts *opts);
+int qemu_fsdev_add(QemuOpts *opts, Error **errp);
 FsDriverEntry *get_fsdev_fsentry(char *id);
 extern FileOperations local_ops;
 extern FileOperations handle_ops;
diff --git a/hw/9pfs/xen-9p-backend.c b/hw/9pfs/xen-9p-backend.c
index 6026780f95..3f54a21c76 100644
--- a/hw/9pfs/xen-9p-backend.c
+++ b/hw/9pfs/xen-9p-backend.c
@@ -14,6 +14,7 @@
 #include "hw/9pfs/9p.h"
 #include "hw/xen/xen_backend.h"
 #include "hw/9pfs/xen-9pfs.h"
+#include "qapi/error.h"
 #include "qemu/config-file.h"
 #include "qemu/option.h"
 #include "fsdev/qemu-fsdev.h"
@@ -355,6 +356,7 @@ static int xen_9pfs_free(struct XenDevice *xendev)
 
 static int xen_9pfs_connect(struct XenDevice *xendev)
 {
+    Error *err = NULL;
     int i;
     Xen9pfsDev *xen_9pdev = container_of(xendev, Xen9pfsDev, xendev);
     V9fsState *s = &xen_9pdev->state;
@@ -452,7 +454,10 @@ static int xen_9pfs_connect(struct XenDevice *xendev)
     qemu_opt_set(fsdev, "path", xen_9pdev->path, NULL);
     qemu_opt_set(fsdev, "security_model", xen_9pdev->security_model, NULL);
     qemu_opts_set_id(fsdev, s->fsconf.fsdev_id);
-    qemu_fsdev_add(fsdev);
+    qemu_fsdev_add(fsdev, &err);
+    if (err) {
+        error_report_err(err);
+    }
     v9fs_device_realize_common(s, &xen_9p_transport, NULL);
 
     return 0;
diff --git a/vl.c b/vl.c
index 2f265b9c74..7cd35d2c37 100644
--- a/vl.c
+++ b/vl.c
@@ -2249,7 +2249,7 @@ static int chardev_init_func(void *opaque, QemuOpts *opts, Error **errp)
 #ifdef CONFIG_VIRTFS
 static int fsdev_init_func(void *opaque, QemuOpts *opts, Error **errp)
 {
-    return qemu_fsdev_add(opts);
+    return qemu_fsdev_add(opts, errp);
 }
 #endif
 
@@ -4236,10 +4236,8 @@ int main(int argc, char **argv, char **envp)
                       chardev_init_func, NULL, &error_fatal);
 
 #ifdef CONFIG_VIRTFS
-    if (qemu_opts_foreach(qemu_find_opts("fsdev"),
-                          fsdev_init_func, NULL, NULL)) {
-        exit(1);
-    }
+    qemu_opts_foreach(qemu_find_opts("fsdev"),
+                      fsdev_init_func, NULL, &error_fatal);
 #endif
 
     if (qemu_opts_foreach(qemu_find_opts("device"),
-- 
2.17.2

[Qemu-devel] [PULL 34/40] vl: Assert drive_new() does not fail in default_drive()

[Markus Armbruster]

If creating (empty) default drives fails, it's a bug.  Therefore,
assert() is more appropriate than exit(1).

Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Max Reitz <mreitz@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20181017082702.5581-33-armbru@redhat.com>
---
 vl.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/vl.c b/vl.c
index 7cd35d2c37..fbbae766d5 100644
--- a/vl.c
+++ b/vl.c
@@ -1156,9 +1156,7 @@ static void default_drive(int enable, int snapshot, BlockInterfaceType type,
     }
 
     dinfo = drive_new(opts, type);
-    if (!dinfo) {
-        exit(1);
-    }
+    assert(dinfo);
     dinfo->is_default = true;
 
 }
-- 
2.17.2

[Qemu-devel] [PULL 35/40] blockdev: Convert drive_new() to Error

[Markus Armbruster]

Calling error_report() from within a function that takes an Error **
argument is suspicious.  drive_new() calls error_report() even though
it can run within drive_init_func(), which takes an Error ** argument.
drive_init_func()'s caller main(), via qemu_opts_foreach(), is fine
with it, but clean it up anyway:

* Convert drive_new() to Error

* Update add_init_drive() to report the error received from
  drive_new()

* Make main() pass &error_fatal through qemu_opts_foreach(),
  drive_init_func() to drive_new()

* Make default_drive() pass &error_abort through qemu_opts_foreach(),
  drive_init_func() to drive_new()

Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Max Reitz <mreitz@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20181017082702.5581-34-armbru@redhat.com>
---
 blockdev.c                | 27 ++++++++++++++-------------
 device-hotplug.c          |  5 ++++-
 include/sysemu/blockdev.h |  3 ++-
 vl.c                      |  8 ++++----
 4 files changed, 24 insertions(+), 19 deletions(-)

diff --git a/blockdev.c b/blockdev.c
index a8755bd908..574adbcb7f 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -759,7 +759,8 @@ QemuOptsList qemu_legacy_drive_opts = {
     },
 };
 
-DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type)
+DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type,
+                     Error **errp)
 {
     const char *value;
     BlockBackend *blk;
@@ -808,7 +809,7 @@ DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type)
         qemu_opt_rename(all_opts, opt_renames[i].from, opt_renames[i].to,
                         &local_err);
         if (local_err) {
-            error_report_err(local_err);
+            error_propagate(errp, local_err);
             return NULL;
         }
     }
@@ -819,7 +820,7 @@ DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type)
         bool writethrough;
 
         if (bdrv_parse_cache_mode(value, &flags, &writethrough) != 0) {
-            error_report("invalid cache option");
+            error_setg(errp, "invalid cache option");
             return NULL;
         }
 
@@ -847,7 +848,7 @@ DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type)
                                    &error_abort);
     qemu_opts_absorb_qdict(legacy_opts, bs_opts, &local_err);
     if (local_err) {
-        error_report_err(local_err);
+        error_propagate(errp, local_err);
         goto fail;
     }
 
@@ -860,7 +861,7 @@ DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type)
             media = MEDIA_CDROM;
             read_only = true;
         } else {
-            error_report("'%s' invalid media", value);
+            error_setg(errp, "'%s' invalid media", value);
             goto fail;
         }
     }
@@ -885,7 +886,7 @@ DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type)
              type++) {
         }
         if (type == IF_COUNT) {
-            error_report("unsupported bus type '%s'", value);
+            error_setg(errp, "unsupported bus type '%s'", value);
             goto fail;
         }
     } else {
@@ -902,7 +903,7 @@ DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type)
 
     if (index != -1) {
         if (bus_id != 0 || unit_id != -1) {
-            error_report("index cannot be used with bus and unit");
+            error_setg(errp, "index cannot be used with bus and unit");
             goto fail;
         }
         bus_id = drive_index_to_bus_id(type, index);
@@ -921,13 +922,13 @@ DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type)
     }
 
     if (max_devs && unit_id >= max_devs) {
-        error_report("unit %d too big (max is %d)", unit_id, max_devs - 1);
+        error_setg(errp, "unit %d too big (max is %d)", unit_id, max_devs - 1);
         goto fail;
     }
 
     if (drive_get(type, bus_id, unit_id) != NULL) {
-        error_report("drive with bus=%d, unit=%d (index=%d) exists",
-                     bus_id, unit_id, index);
+        error_setg(errp, "drive with bus=%d, unit=%d (index=%d) exists",
+                   bus_id, unit_id, index);
         goto fail;
     }
 
@@ -970,7 +971,7 @@ DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type)
     if (werror != NULL) {
         if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO &&
             type != IF_NONE) {
-            error_report("werror is not supported by this bus type");
+            error_setg(errp, "werror is not supported by this bus type");
             goto fail;
         }
         qdict_put_str(bs_opts, "werror", werror);
@@ -980,7 +981,7 @@ DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type)
     if (rerror != NULL) {
         if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI &&
             type != IF_NONE) {
-            error_report("rerror is not supported by this bus type");
+            error_setg(errp, "rerror is not supported by this bus type");
             goto fail;
         }
         qdict_put_str(bs_opts, "rerror", rerror);
@@ -991,7 +992,7 @@ DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type)
     bs_opts = NULL;
     if (!blk) {
         if (local_err) {
-            error_report_err(local_err);
+            error_propagate(errp, local_err);
         }
         goto fail;
     } else {
diff --git a/device-hotplug.c b/device-hotplug.c
index cd427e2c76..6090d5f1e9 100644
--- a/device-hotplug.c
+++ b/device-hotplug.c
@@ -28,6 +28,7 @@
 #include "sysemu/block-backend.h"
 #include "sysemu/blockdev.h"
 #include "qapi/qmp/qdict.h"
+#include "qapi/error.h"
 #include "qemu/config-file.h"
 #include "qemu/option.h"
 #include "sysemu/sysemu.h"
@@ -36,6 +37,7 @@
 
 static DriveInfo *add_init_drive(const char *optstr)
 {
+    Error *err = NULL;
     DriveInfo *dinfo;
     QemuOpts *opts;
     MachineClass *mc;
@@ -45,8 +47,9 @@ static DriveInfo *add_init_drive(const char *optstr)
         return NULL;
 
     mc = MACHINE_GET_CLASS(current_machine);
-    dinfo = drive_new(opts, mc->block_default_type);
+    dinfo = drive_new(opts, mc->block_default_type, &err);
     if (!dinfo) {
+        error_report_err(err);
         qemu_opts_del(opts);
         return NULL;
     }
diff --git a/include/sysemu/blockdev.h b/include/sysemu/blockdev.h
index 24954b94e0..d34c4920dc 100644
--- a/include/sysemu/blockdev.h
+++ b/include/sysemu/blockdev.h
@@ -54,7 +54,8 @@ DriveInfo *drive_get_next(BlockInterfaceType type);
 QemuOpts *drive_def(const char *optstr);
 QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file,
                     const char *optstr);
-DriveInfo *drive_new(QemuOpts *arg, BlockInterfaceType block_default_type);
+DriveInfo *drive_new(QemuOpts *arg, BlockInterfaceType block_default_type,
+                     Error **errp);
 
 /* device-hotplug */
 
diff --git a/vl.c b/vl.c
index fbbae766d5..4efa2d08d4 100644
--- a/vl.c
+++ b/vl.c
@@ -1129,7 +1129,7 @@ static int drive_init_func(void *opaque, QemuOpts *opts, Error **errp)
 {
     BlockInterfaceType *block_default_type = opaque;
 
-    return drive_new(opts, *block_default_type) == NULL;
+    return drive_new(opts, *block_default_type, errp) == NULL;
 }
 
 static int drive_enable_snapshot(void *opaque, QemuOpts *opts, Error **errp)
@@ -1155,8 +1155,7 @@ static void default_drive(int enable, int snapshot, BlockInterfaceType type,
         drive_enable_snapshot(NULL, opts, NULL);
     }
 
-    dinfo = drive_new(opts, type);
-    assert(dinfo);
+    dinfo = drive_new(opts, type, &error_abort);
     dinfo->is_default = true;
 
 }
@@ -4397,7 +4396,8 @@ int main(int argc, char **argv, char **envp)
                           NULL, NULL);
     }
     if (qemu_opts_foreach(qemu_find_opts("drive"), drive_init_func,
-                          &machine_class->block_default_type, NULL)) {
+                          &machine_class->block_default_type, &error_fatal)) {
+        /* We printed help */
         exit(1);
     }
 
-- 
2.17.2

[Qemu-devel] [PULL 36/40] vl: Fix exit status for -drive format=help

[Markus Armbruster]

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20181017082702.5581-35-armbru@redhat.com>
---
 vl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vl.c b/vl.c
index 4efa2d08d4..812ceba425 100644
--- a/vl.c
+++ b/vl.c
@@ -4398,7 +4398,7 @@ int main(int argc, char **argv, char **envp)
     if (qemu_opts_foreach(qemu_find_opts("drive"), drive_init_func,
                           &machine_class->block_default_type, &error_fatal)) {
         /* We printed help */
-        exit(1);
+        exit(0);
     }
 
     default_drive(default_cdrom, snapshot, machine_class->block_default_type, 2,
-- 
2.17.2

[Qemu-devel] [PULL 37/40] vl: Simplify call of parse_name()

[Markus Armbruster]

main() checks for parse_name() failure even though it can't actually
fail.  That's okay.  Simplify it to check by passing &error_fatal,
like the other users of qemu_opts_foreach().

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20181017082702.5581-36-armbru@redhat.com>
---
 vl.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/vl.c b/vl.c
index 812ceba425..d53e2563e9 100644
--- a/vl.c
+++ b/vl.c
@@ -3974,10 +3974,8 @@ int main(int argc, char **argv, char **envp)
     }
 #endif
 
-    if (qemu_opts_foreach(qemu_find_opts("name"),
-                          parse_name, NULL, NULL)) {
-        exit(1);
-    }
+    qemu_opts_foreach(qemu_find_opts("name"),
+                      parse_name, NULL, &error_fatal);
 
 #ifndef _WIN32
     qemu_opts_foreach(qemu_find_opts("add-fd"),
-- 
2.17.2

[Qemu-devel] [PULL 38/40] block: Clean up bdrv_img_create()'s error reporting

[Markus Armbruster]

bdrv_img_create() takes an Error ** argument and uses it in the
conventional way, except for one place: when qemu_opts_do_parse()
fails, it first reports its error to stderr or the HMP monitor with
error_report_err(), then error_setg()'s a generic error.

When the caller reports that second error similarly, this produces two
consecutive error messages on stderr or the HMP monitor.

When the caller does something else with it, such as send it via QMP,
the first error still goes to stderr or the HMP monitor.  Fortunately,
no such caller exists.

Simply use the first error as is.  Update expected output of
qemu-iotest 049 accordingly.

Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Max Reitz <mreitz@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20181017082702.5581-37-armbru@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
---
 block.c                    |  3 ---
 tests/qemu-iotests/049.out | 12 ++++--------
 2 files changed, 4 insertions(+), 11 deletions(-)

diff --git a/block.c b/block.c
index 5d51419d21..08d64cdc61 100644
--- a/block.c
+++ b/block.c
@@ -4803,9 +4803,6 @@ void bdrv_img_create(const char *filename, const char *fmt,
     if (options) {
         qemu_opts_do_parse(opts, options, NULL, &local_err);
         if (local_err) {
-            error_report_err(local_err);
-            local_err = NULL;
-            error_setg(errp, "Invalid options for file format '%s'", fmt);
             goto out;
         }
     }
diff --git a/tests/qemu-iotests/049.out b/tests/qemu-iotests/049.out
index 0871bff564..6b505408dd 100644
--- a/tests/qemu-iotests/049.out
+++ b/tests/qemu-iotests/049.out
@@ -95,35 +95,31 @@ qemu-img create -f qcow2 TEST_DIR/t.qcow2 -- -1024
 qemu-img: Image size must be less than 8 EiB!
 
 qemu-img create -f qcow2 -o size=-1024 TEST_DIR/t.qcow2
-qemu-img: Value '-1024' is out of range for parameter 'size'
-qemu-img: TEST_DIR/t.qcow2: Invalid options for file format 'qcow2'
+qemu-img: TEST_DIR/t.qcow2: Value '-1024' is out of range for parameter 'size'
 
 qemu-img create -f qcow2 TEST_DIR/t.qcow2 -- -1k
 qemu-img: Image size must be less than 8 EiB!
 
 qemu-img create -f qcow2 -o size=-1k TEST_DIR/t.qcow2
-qemu-img: Value '-1k' is out of range for parameter 'size'
-qemu-img: TEST_DIR/t.qcow2: Invalid options for file format 'qcow2'
+qemu-img: TEST_DIR/t.qcow2: Value '-1k' is out of range for parameter 'size'
 
 qemu-img create -f qcow2 TEST_DIR/t.qcow2 -- 1kilobyte
 qemu-img: Invalid image size specified! You may use k, M, G, T, P or E suffixes for
 qemu-img: kilobytes, megabytes, gigabytes, terabytes, petabytes and exabytes.
 
 qemu-img create -f qcow2 -o size=1kilobyte TEST_DIR/t.qcow2
-qemu-img: Parameter 'size' expects a non-negative number below 2^64
+qemu-img: TEST_DIR/t.qcow2: Parameter 'size' expects a non-negative number below 2^64
 Optional suffix k, M, G, T, P or E means kilo-, mega-, giga-, tera-, peta-
 and exabytes, respectively.
-qemu-img: TEST_DIR/t.qcow2: Invalid options for file format 'qcow2'
 
 qemu-img create -f qcow2 TEST_DIR/t.qcow2 -- foobar
 qemu-img: Invalid image size specified! You may use k, M, G, T, P or E suffixes for
 qemu-img: kilobytes, megabytes, gigabytes, terabytes, petabytes and exabytes.
 
 qemu-img create -f qcow2 -o size=foobar TEST_DIR/t.qcow2
-qemu-img: Parameter 'size' expects a non-negative number below 2^64
+qemu-img: TEST_DIR/t.qcow2: Parameter 'size' expects a non-negative number below 2^64
 Optional suffix k, M, G, T, P or E means kilo-, mega-, giga-, tera-, peta-
 and exabytes, respectively.
-qemu-img: TEST_DIR/t.qcow2: Invalid options for file format 'qcow2'
 
 == Check correct interpretation of suffixes for cluster size ==
 
-- 
2.17.2

[Qemu-devel] [PULL 39/40] vpc: Fail open on bad header checksum

[Markus Armbruster]

vpc_open() merely prints a warning when it finds a bad header
checksum.  Turn that into a hard error.

Cc: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20181017082702.5581-39-armbru@redhat.com>
[Error message capitalized for local consistency]
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
---
 block/vpc.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/block/vpc.c b/block/vpc.c
index bf294abfa7..984187cadd 100644
--- a/block/vpc.c
+++ b/block/vpc.c
@@ -284,9 +284,11 @@ static int vpc_open(BlockDriverState *bs, QDict *options, int flags,
 
     checksum = be32_to_cpu(footer->checksum);
     footer->checksum = 0;
-    if (vpc_checksum(s->footer_buf, HEADER_SIZE) != checksum)
-        fprintf(stderr, "block-vpc: The header checksum of '%s' is "
-            "incorrect.\n", bs->filename);
+    if (vpc_checksum(s->footer_buf, HEADER_SIZE) != checksum) {
+        error_setg(errp, "Incorrect header checksum");
+        ret = -EINVAL;
+        goto fail;
+    }
 
     /* Write 'checksum' back to footer, or else will leave it with zero. */
     footer->checksum = cpu_to_be32(checksum);
-- 
2.17.2

[Qemu-devel] [PULL 40/40] error: Drop bogus "use error_setg() instead" admonitions

[Markus Armbruster]

Commit 97f40301f1d "error: Functions to report warnings and
informational messages" copied the "use error_setg() instead"
admonition from the error reporting functions to new functions even
though it doesn't actually apply there.  Drop it.  Also drop it from
vreport(), where it doesn't apply anymore.

Reported-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20181019123923.26649-1-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
 util/qemu-error.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/util/qemu-error.c b/util/qemu-error.c
index 4ab428f7e4..fcbe8a1f74 100644
--- a/util/qemu-error.c
+++ b/util/qemu-error.c
@@ -194,7 +194,6 @@ bool enable_timestamp_msg;
  * Format arguments like vsprintf().  The resulting message should be
  * a single phrase, with no newline or trailing punctuation.
  * Prepend the current location and append a newline.
- * It's wrong to call this in a QMP monitor.  Use error_setg() there.
  */
 static void vreport(report_type type, const char *fmt, va_list ap)
 {
@@ -242,7 +241,6 @@ void error_vreport(const char *fmt, va_list ap)
  * Format arguments like vsprintf().  The resulting message should be
  * a single phrase, with no newline or trailing punctuation.
  * Prepend the current location and append a newline.
- * It's wrong to call this in a QMP monitor.  Use error_setg() there.
  */
 void warn_vreport(const char *fmt, va_list ap)
 {
@@ -255,7 +253,6 @@ void warn_vreport(const char *fmt, va_list ap)
  * Format arguments like vsprintf().  The resulting message should be
  * a single phrase, with no newline or trailing punctuation.
  * Prepend the current location and append a newline.
- * It's wrong to call this in a QMP monitor.  Use error_setg() there.
  */
 void info_vreport(const char *fmt, va_list ap)
 {
@@ -283,7 +280,6 @@ void error_report(const char *fmt, ...)
  * Format arguments like sprintf(). The resulting message should be a
  * single phrase, with no newline or trailing punctuation.
  * Prepend the current location and append a newline.
- * It's wrong to call this in a QMP monitor.  Use error_setg() there.
  */
 void warn_report(const char *fmt, ...)
 {
@@ -300,7 +296,6 @@ void warn_report(const char *fmt, ...)
  * Format arguments like sprintf(). The resulting message should be a
  * single phrase, with no newline or trailing punctuation.
  * Prepend the current location and append a newline.
- * It's wrong to call this in a QMP monitor.  Use error_setg() there.
  */
 void info_report(const char *fmt, ...)
 {
-- 
2.17.2

Re: [Qemu-devel] [PULL 00/40] Error reporting patches for 2018-10-22

[Peter Maydell]

On 22 October 2018 at 13:33, Markus Armbruster <armbru@redhat.com> wrote:
> The following changes since commit 1b7490446bf41f54130c2d495dd4c8768c8e1ce3:
>
>   Merge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-3.1-pull-request' into staging (2018-10-19 11:20:05 +0100)
>
> are available in the Git repository at:
>
>   git://repo.or.cz/qemu/armbru.git tags/pull-error-2018-10-22
>
> for you to fetch changes up to 80313fb53d8048882848b6f63daaeb29dc319765:
>
>   error: Drop bogus "use error_setg() instead" admonitions (2018-10-19 15:47:09 +0200)
>
> ----------------------------------------------------------------
> Error reporting patches for 2018-10-22
>
> * Replace some unwise uses of error_report() & friends
> * Print error when using incorrect backend for debugcon
>


Applied, thanks.

-- PMM