[PULL 0/4] Monitor patches patches for 2021-10-28

[PULL 0/4] Monitor patches patches for 2021-10-28

[Markus Armbruster]

The following changes since commit c52d69e7dbaaed0ffdef8125e79218672c30161d:

  Merge remote-tracking branch 'remotes/cschoenebeck/tags/pull-9p-20211027' into staging (2021-10-27 11:45:18 -0700)

are available in the Git repository at:

  git://repo.or.cz/qemu/armbru.git tags/pull-monitor-2021-10-28

for you to fetch changes up to 47c849357b57c1fbd3d3355c586c4784c6f4188e:

  qapi/monitor: only allow 'keep' SetPasswordAction for VNC and deprecate (2021-10-28 06:25:08 +0200)

----------------------------------------------------------------
Monitor patches patches for 2021-10-28

----------------------------------------------------------------
Stefan Reiter (4):
      monitor/hmp: add support for flag argument with value
      qapi/monitor: refactor set/expire_password with enums
      qapi/monitor: allow VNC display id in set/expire_password
      qapi/monitor: only allow 'keep' SetPasswordAction for VNC and deprecate

 docs/about/deprecated.rst  |   6 ++
 qapi/ui.json               | 156 +++++++++++++++++++++++++++++++++++++++------
 monitor/monitor-internal.h |   3 +-
 monitor/hmp-cmds.c         |  48 +++++++++++++-
 monitor/hmp.c              |  19 +++++-
 monitor/qmp-cmds.c         |  54 ++++------------
 hmp-commands.hx            |  24 +++----
 7 files changed, 236 insertions(+), 74 deletions(-)

-- 
2.31.1

[PULL 1/4] monitor/hmp: add support for flag argument with value

[Markus Armbruster]

From: Stefan Reiter <s.reiter@proxmox.com>

Adds support for the "-xV" parameter type, where "-x" denotes a flag
name and the "V" suffix indicates that this flag is supposed to take an
arbitrary string parameter.

These parameters are always optional, the entry in the qdict will be
omitted if the flag is not given.

Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
Message-Id: <20211021100135.4146766-2-s.reiter@proxmox.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 monitor/monitor-internal.h |  3 ++-
 monitor/hmp.c              | 19 ++++++++++++++++++-
 2 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/monitor/monitor-internal.h b/monitor/monitor-internal.h
index 9c3a09cb01..9e708b329d 100644
--- a/monitor/monitor-internal.h
+++ b/monitor/monitor-internal.h
@@ -63,7 +63,8 @@
  * '.'          other form of optional type (for 'i' and 'l')
  * 'b'          boolean
  *              user mode accepts "on" or "off"
- * '-'          optional parameter (eg. '-f')
+ * '-'          optional parameter (eg. '-f'); if followed by an 'V', it
+ *              specifies an optional string param (e.g. '-fV' allows '-f foo')
  *
  */
 
diff --git a/monitor/hmp.c b/monitor/hmp.c
index d50c3124e1..899e0c990f 100644
--- a/monitor/hmp.c
+++ b/monitor/hmp.c
@@ -980,6 +980,7 @@ static QDict *monitor_parse_arguments(Monitor *mon,
             {
                 const char *tmp = p;
                 int skip_key = 0;
+                int ret;
                 /* option */
 
                 c = *typestr++;
@@ -1002,11 +1003,27 @@ static QDict *monitor_parse_arguments(Monitor *mon,
                     }
                     if (skip_key) {
                         p = tmp;
+                    } else if (*typestr == 'V') {
+                        /* has option with string value */
+                        typestr++;
+                        tmp = p++;
+                        while (qemu_isspace(*p)) {
+                            p++;
+                        }
+                        ret = get_str(buf, sizeof(buf), &p);
+                        if (ret < 0) {
+                            monitor_printf(mon, "%s: value expected for -%c\n",
+                                           cmd->name, *tmp);
+                            goto fail;
+                        }
+                        qdict_put_str(qdict, key, buf);
                     } else {
-                        /* has option */
+                        /* has boolean option */
                         p++;
                         qdict_put_bool(qdict, key, true);
                     }
+                } else if (*typestr == 'V') {
+                    typestr++;
                 }
             }
             break;
-- 
2.31.1

[PULL 2/4] qapi/monitor: refactor set/expire_password with enums

[Markus Armbruster]

From: Stefan Reiter <s.reiter@proxmox.com>

'protocol' and 'connected' are better suited as enums than as strings,
make use of that. No functional change intended.

Suggested-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
Message-Id: <20211021100135.4146766-3-s.reiter@proxmox.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 qapi/ui.json       | 37 +++++++++++++++++++++++++++++++++++--
 monitor/hmp-cmds.c | 29 +++++++++++++++++++++++++++--
 monitor/qmp-cmds.c | 37 ++++++++++++-------------------------
 3 files changed, 74 insertions(+), 29 deletions(-)

diff --git a/qapi/ui.json b/qapi/ui.json
index d7567ac866..15cc19dcc5 100644
--- a/qapi/ui.json
+++ b/qapi/ui.json
@@ -9,6 +9,35 @@
 { 'include': 'common.json' }
 { 'include': 'sockets.json' }
 
+##
+# @DisplayProtocol:
+#
+# Display protocols which support changing password options.
+#
+# Since: 6.2
+#
+##
+{ 'enum': 'DisplayProtocol',
+  'data': [ { 'name': 'vnc', 'if': 'CONFIG_VNC' },
+            { 'name': 'spice', 'if': 'CONFIG_SPICE' } ] }
+
+##
+# @SetPasswordAction:
+#
+# An action to take on changing a password on a connection with active clients.
+#
+# @fail: fail the command if clients are connected
+#
+# @disconnect: disconnect existing clients
+#
+# @keep: maintain existing clients
+#
+# Since: 6.2
+#
+##
+{ 'enum': 'SetPasswordAction',
+  'data': [ 'fail', 'disconnect', 'keep' ] }
+
 ##
 # @set_password:
 #
@@ -38,7 +67,9 @@
 #
 ##
 { 'command': 'set_password',
-  'data': {'protocol': 'str', 'password': 'str', '*connected': 'str'} }
+  'data': { 'protocol': 'DisplayProtocol',
+            'password': 'str',
+            '*connected': 'SetPasswordAction' } }
 
 ##
 # @expire_password:
@@ -71,7 +102,9 @@
 # <- { "return": {} }
 #
 ##
-{ 'command': 'expire_password', 'data': {'protocol': 'str', 'time': 'str'} }
+{ 'command': 'expire_password',
+  'data': { 'protocol': 'DisplayProtocol',
+            'time': 'str' } }
 
 ##
 # @screendump:
diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
index bcaa41350e..b8abe69609 100644
--- a/monitor/hmp-cmds.c
+++ b/monitor/hmp-cmds.c
@@ -1453,8 +1453,24 @@ void hmp_set_password(Monitor *mon, const QDict *qdict)
     const char *password  = qdict_get_str(qdict, "password");
     const char *connected = qdict_get_try_str(qdict, "connected");
     Error *err = NULL;
+    DisplayProtocol proto;
+    SetPasswordAction conn;
 
-    qmp_set_password(protocol, password, !!connected, connected, &err);
+    proto = qapi_enum_parse(&DisplayProtocol_lookup, protocol,
+                            DISPLAY_PROTOCOL_VNC, &err);
+    if (err) {
+        goto out;
+    }
+
+    conn = qapi_enum_parse(&SetPasswordAction_lookup, connected,
+                           SET_PASSWORD_ACTION_KEEP, &err);
+    if (err) {
+        goto out;
+    }
+
+    qmp_set_password(proto, password, !!connected, conn, &err);
+
+out:
     hmp_handle_error(mon, err);
 }
 
@@ -1463,8 +1479,17 @@ void hmp_expire_password(Monitor *mon, const QDict *qdict)
     const char *protocol  = qdict_get_str(qdict, "protocol");
     const char *whenstr = qdict_get_str(qdict, "time");
     Error *err = NULL;
+    DisplayProtocol proto;
 
-    qmp_expire_password(protocol, whenstr, &err);
+    proto = qapi_enum_parse(&DisplayProtocol_lookup, protocol,
+                            DISPLAY_PROTOCOL_VNC, &err);
+    if (err) {
+        goto out;
+    }
+
+    qmp_expire_password(proto, whenstr, &err);
+
+out:
     hmp_handle_error(mon, err);
 }
 
diff --git a/monitor/qmp-cmds.c b/monitor/qmp-cmds.c
index 5c0d5e116b..0654d7289a 100644
--- a/monitor/qmp-cmds.c
+++ b/monitor/qmp-cmds.c
@@ -163,33 +163,27 @@ void qmp_system_wakeup(Error **errp)
     qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER, errp);
 }
 
-void qmp_set_password(const char *protocol, const char *password,
-                      bool has_connected, const char *connected, Error **errp)
+void qmp_set_password(DisplayProtocol protocol, const char *password,
+                      bool has_connected, SetPasswordAction connected,
+                      Error **errp)
 {
     int disconnect_if_connected = 0;
     int fail_if_connected = 0;
     int rc;
 
     if (has_connected) {
-        if (strcmp(connected, "fail") == 0) {
-            fail_if_connected = 1;
-        } else if (strcmp(connected, "disconnect") == 0) {
-            disconnect_if_connected = 1;
-        } else if (strcmp(connected, "keep") == 0) {
-            /* nothing */
-        } else {
-            error_setg(errp, QERR_INVALID_PARAMETER, "connected");
-            return;
-        }
+        fail_if_connected = connected == SET_PASSWORD_ACTION_FAIL;
+        disconnect_if_connected = connected == SET_PASSWORD_ACTION_DISCONNECT;
     }
 
-    if (strcmp(protocol, "spice") == 0) {
+    if (protocol == DISPLAY_PROTOCOL_SPICE) {
         if (!qemu_using_spice(errp)) {
             return;
         }
         rc = qemu_spice.set_passwd(password, fail_if_connected,
                                    disconnect_if_connected);
-    } else if (strcmp(protocol, "vnc") == 0) {
+    } else {
+        assert(protocol == DISPLAY_PROTOCOL_VNC);
         if (fail_if_connected || disconnect_if_connected) {
             /* vnc supports "connected=keep" only */
             error_setg(errp, QERR_INVALID_PARAMETER, "connected");
@@ -198,10 +192,6 @@ void qmp_set_password(const char *protocol, const char *password,
         /* Note that setting an empty password will not disable login through
          * this interface. */
         rc = vnc_display_password(NULL, password);
-    } else {
-        error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "protocol",
-                   "'vnc' or 'spice'");
-        return;
     }
 
     if (rc != 0) {
@@ -209,7 +199,7 @@ void qmp_set_password(const char *protocol, const char *password,
     }
 }
 
-void qmp_expire_password(const char *protocol, const char *whenstr,
+void qmp_expire_password(DisplayProtocol protocol, const char *whenstr,
                          Error **errp)
 {
     time_t when;
@@ -225,17 +215,14 @@ void qmp_expire_password(const char *protocol, const char *whenstr,
         when = strtoull(whenstr, NULL, 10);
     }
 
-    if (strcmp(protocol, "spice") == 0) {
+    if (protocol == DISPLAY_PROTOCOL_SPICE) {
         if (!qemu_using_spice(errp)) {
             return;
         }
         rc = qemu_spice.set_pw_expire(when);
-    } else if (strcmp(protocol, "vnc") == 0) {
-        rc = vnc_display_pw_expire(NULL, when);
     } else {
-        error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "protocol",
-                   "'vnc' or 'spice'");
-        return;
+        assert(protocol == DISPLAY_PROTOCOL_VNC);
+        rc = vnc_display_pw_expire(NULL, when);
     }
 
     if (rc != 0) {
-- 
2.31.1

[PULL 3/4] qapi/monitor: allow VNC display id in set/expire_password

[Markus Armbruster]

From: Stefan Reiter <s.reiter@proxmox.com>

It is possible to specify more than one VNC server on the command line,
either with an explicit ID or the auto-generated ones à la "default",
"vnc2", "vnc3", ...

It is not possible to change the password on one of these extra VNC
displays though. Fix this by adding a "display" parameter to the
"set_password" and "expire_password" QMP and HMP commands.

For HMP, the display is specified using the "-d" value flag.

For QMP, the schema is updated to explicitly express the supported
variants of the commands with protocol-discriminated unions.

Suggested-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
Message-Id: <20211021100135.4146766-4-s.reiter@proxmox.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 qapi/ui.json       | 112 +++++++++++++++++++++++++++++++++++----------
 monitor/hmp-cmds.c |  45 ++++++++++++------
 monitor/qmp-cmds.c |  36 ++++++---------
 hmp-commands.hx    |  24 +++++-----
 4 files changed, 148 insertions(+), 69 deletions(-)

diff --git a/qapi/ui.json b/qapi/ui.json
index 15cc19dcc5..99ac29ad9c 100644
--- a/qapi/ui.json
+++ b/qapi/ui.json
@@ -39,20 +39,61 @@
   'data': [ 'fail', 'disconnect', 'keep' ] }
 
 ##
-# @set_password:
+# @SetPasswordOptions:
 #
-# Sets the password of a remote display session.
+# General options for set_password.
 #
 # @protocol: - 'vnc' to modify the VNC server password
 #            - 'spice' to modify the Spice server password
 #
 # @password: the new password
 #
-# @connected: how to handle existing clients when changing the
-#             password.  If nothing is specified, defaults to 'keep'
-#             'fail' to fail the command if clients are connected
-#             'disconnect' to disconnect existing clients
-#             'keep' to maintain existing clients
+# Since: 6.2
+#
+##
+{ 'union': 'SetPasswordOptions',
+  'base': { 'protocol': 'DisplayProtocol',
+            'password': 'str' },
+  'discriminator': 'protocol',
+  'data': { 'vnc': 'SetPasswordOptionsVnc',
+            'spice': 'SetPasswordOptionsSpice' } }
+
+##
+# @SetPasswordOptionsSpice:
+#
+# Options for set_password specific to the SPICE procotol.
+#
+# @connected: How to handle existing clients when changing the
+#             password. If nothing is specified, defaults to 'keep'.
+#
+# Since: 6.2
+#
+##
+{ 'struct': 'SetPasswordOptionsSpice',
+  'data': { '*connected': 'SetPasswordAction' } }
+
+##
+# @SetPasswordOptionsVnc:
+#
+# Options for set_password specific to the VNC procotol.
+#
+# @display: The id of the display where the password should be changed.
+#           Defaults to the first.
+#
+# @connected: How to handle existing clients when changing the
+#             password.
+#
+# Since: 6.2
+#
+##
+{ 'struct': 'SetPasswordOptionsVnc',
+  'data': { '*display': 'str',
+            '*connected': 'SetPasswordAction' }}
+
+##
+# @set_password:
+#
+# Set the password of a remote display server.
 #
 # Returns: - Nothing on success
 #          - If Spice is not enabled, DeviceNotFound
@@ -66,18 +107,16 @@
 # <- { "return": {} }
 #
 ##
-{ 'command': 'set_password',
-  'data': { 'protocol': 'DisplayProtocol',
-            'password': 'str',
-            '*connected': 'SetPasswordAction' } }
+{ 'command': 'set_password', 'boxed': true, 'data': 'SetPasswordOptions' }
 
 ##
-# @expire_password:
+# @ExpirePasswordOptions:
 #
-# Expire the password of a remote display server.
-#
-# @protocol: the name of the remote display protocol 'vnc' or 'spice'
+# General options for expire_password.
 #
+# @protocol: - 'vnc' to modify the VNC server expiration
+#            - 'spice' to modify the Spice server expiration
+
 # @time: when to expire the password.
 #
 #        - 'now' to expire the password immediately
@@ -85,16 +124,45 @@
 #        - '+INT' where INT is the number of seconds from now (integer)
 #        - 'INT' where INT is the absolute time in seconds
 #
-# Returns: - Nothing on success
-#          - If @protocol is 'spice' and Spice is not active, DeviceNotFound
-#
-# Since: 0.14
-#
 # Notes: Time is relative to the server and currently there is no way to
 #        coordinate server time with client time.  It is not recommended to
 #        use the absolute time version of the @time parameter unless you're
 #        sure you are on the same machine as the QEMU instance.
 #
+# Since: 6.2
+#
+##
+{ 'union': 'ExpirePasswordOptions',
+  'base': { 'protocol': 'DisplayProtocol',
+            'time': 'str' },
+  'discriminator': 'protocol',
+  'data': { 'vnc': 'ExpirePasswordOptionsVnc' } }
+
+##
+# @ExpirePasswordOptionsVnc:
+#
+# Options for expire_password specific to the VNC procotol.
+#
+# @display: The id of the display where the expiration should be changed.
+#           Defaults to the first.
+#
+# Since: 6.2
+#
+##
+
+{ 'struct': 'ExpirePasswordOptionsVnc',
+  'data': { '*display': 'str' } }
+
+##
+# @expire_password:
+#
+# Expire the password of a remote display server.
+#
+# Returns: - Nothing on success
+#          - If @protocol is 'spice' and Spice is not active, DeviceNotFound
+#
+# Since: 0.14
+#
 # Example:
 #
 # -> { "execute": "expire_password", "arguments": { "protocol": "vnc",
@@ -102,9 +170,7 @@
 # <- { "return": {} }
 #
 ##
-{ 'command': 'expire_password',
-  'data': { 'protocol': 'DisplayProtocol',
-            'time': 'str' } }
+{ 'command': 'expire_password', 'boxed': true, 'data': 'ExpirePasswordOptions' }
 
 ##
 # @screendump:
diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
index b8abe69609..f0f0c82d59 100644
--- a/monitor/hmp-cmds.c
+++ b/monitor/hmp-cmds.c
@@ -1451,24 +1451,34 @@ void hmp_set_password(Monitor *mon, const QDict *qdict)
 {
     const char *protocol  = qdict_get_str(qdict, "protocol");
     const char *password  = qdict_get_str(qdict, "password");
+    const char *display = qdict_get_try_str(qdict, "display");
     const char *connected = qdict_get_try_str(qdict, "connected");
     Error *err = NULL;
-    DisplayProtocol proto;
-    SetPasswordAction conn;
 
-    proto = qapi_enum_parse(&DisplayProtocol_lookup, protocol,
-                            DISPLAY_PROTOCOL_VNC, &err);
+    SetPasswordOptions opts = {
+        .password = (char *)password,
+    };
+
+    opts.protocol = qapi_enum_parse(&DisplayProtocol_lookup, protocol,
+                                    DISPLAY_PROTOCOL_VNC, &err);
     if (err) {
         goto out;
     }
 
-    conn = qapi_enum_parse(&SetPasswordAction_lookup, connected,
-                           SET_PASSWORD_ACTION_KEEP, &err);
-    if (err) {
-        goto out;
+    if (opts.protocol == DISPLAY_PROTOCOL_VNC) {
+        opts.u.vnc.has_display = !!display;
+        opts.u.vnc.display = (char *)display;
+    } else if (opts.protocol == DISPLAY_PROTOCOL_SPICE) {
+        opts.u.spice.has_connected = !!connected;
+        opts.u.spice.connected =
+            qapi_enum_parse(&SetPasswordAction_lookup, connected,
+                            SET_PASSWORD_ACTION_KEEP, &err);
+        if (err) {
+            goto out;
+        }
     }
 
-    qmp_set_password(proto, password, !!connected, conn, &err);
+    qmp_set_password(&opts, &err);
 
 out:
     hmp_handle_error(mon, err);
@@ -1478,16 +1488,25 @@ void hmp_expire_password(Monitor *mon, const QDict *qdict)
 {
     const char *protocol  = qdict_get_str(qdict, "protocol");
     const char *whenstr = qdict_get_str(qdict, "time");
+    const char *display = qdict_get_try_str(qdict, "display");
     Error *err = NULL;
-    DisplayProtocol proto;
 
-    proto = qapi_enum_parse(&DisplayProtocol_lookup, protocol,
-                            DISPLAY_PROTOCOL_VNC, &err);
+    ExpirePasswordOptions opts = {
+        .time = (char *)whenstr,
+    };
+
+    opts.protocol = qapi_enum_parse(&DisplayProtocol_lookup, protocol,
+                                    DISPLAY_PROTOCOL_VNC, &err);
     if (err) {
         goto out;
     }
 
-    qmp_expire_password(proto, whenstr, &err);
+    if (opts.protocol == DISPLAY_PROTOCOL_VNC) {
+        opts.u.vnc.has_display = !!display;
+        opts.u.vnc.display = (char *)display;
+    }
+
+    qmp_expire_password(&opts, &err);
 
 out:
     hmp_handle_error(mon, err);
diff --git a/monitor/qmp-cmds.c b/monitor/qmp-cmds.c
index 0654d7289a..5637bd70b6 100644
--- a/monitor/qmp-cmds.c
+++ b/monitor/qmp-cmds.c
@@ -163,35 +163,27 @@ void qmp_system_wakeup(Error **errp)
     qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER, errp);
 }
 
-void qmp_set_password(DisplayProtocol protocol, const char *password,
-                      bool has_connected, SetPasswordAction connected,
-                      Error **errp)
+void qmp_set_password(SetPasswordOptions *opts, Error **errp)
 {
-    int disconnect_if_connected = 0;
-    int fail_if_connected = 0;
-    int rc;
+    int rc = 0;
 
-    if (has_connected) {
-        fail_if_connected = connected == SET_PASSWORD_ACTION_FAIL;
-        disconnect_if_connected = connected == SET_PASSWORD_ACTION_DISCONNECT;
-    }
-
-    if (protocol == DISPLAY_PROTOCOL_SPICE) {
+    if (opts->protocol == DISPLAY_PROTOCOL_SPICE) {
         if (!qemu_using_spice(errp)) {
             return;
         }
-        rc = qemu_spice.set_passwd(password, fail_if_connected,
-                                   disconnect_if_connected);
+        rc = qemu_spice.set_passwd(opts->password,
+                opts->u.spice.connected == SET_PASSWORD_ACTION_FAIL,
+                opts->u.spice.connected == SET_PASSWORD_ACTION_DISCONNECT);
     } else {
-        assert(protocol == DISPLAY_PROTOCOL_VNC);
-        if (fail_if_connected || disconnect_if_connected) {
+        assert(opts->protocol == DISPLAY_PROTOCOL_VNC);
+        if (opts->u.vnc.connected != SET_PASSWORD_ACTION_KEEP) {
             /* vnc supports "connected=keep" only */
             error_setg(errp, QERR_INVALID_PARAMETER, "connected");
             return;
         }
         /* Note that setting an empty password will not disable login through
          * this interface. */
-        rc = vnc_display_password(NULL, password);
+        rc = vnc_display_password(opts->u.vnc.display, opts->password);
     }
 
     if (rc != 0) {
@@ -199,11 +191,11 @@ void qmp_set_password(DisplayProtocol protocol, const char *password,
     }
 }
 
-void qmp_expire_password(DisplayProtocol protocol, const char *whenstr,
-                         Error **errp)
+void qmp_expire_password(ExpirePasswordOptions *opts, Error **errp)
 {
     time_t when;
     int rc;
+    const char *whenstr = opts->time;
 
     if (strcmp(whenstr, "now") == 0) {
         when = 0;
@@ -215,14 +207,14 @@ void qmp_expire_password(DisplayProtocol protocol, const char *whenstr,
         when = strtoull(whenstr, NULL, 10);
     }
 
-    if (protocol == DISPLAY_PROTOCOL_SPICE) {
+    if (opts->protocol == DISPLAY_PROTOCOL_SPICE) {
         if (!qemu_using_spice(errp)) {
             return;
         }
         rc = qemu_spice.set_pw_expire(when);
     } else {
-        assert(protocol == DISPLAY_PROTOCOL_VNC);
-        rc = vnc_display_pw_expire(NULL, when);
+        assert(opts->protocol == DISPLAY_PROTOCOL_VNC);
+        rc = vnc_display_pw_expire(opts->u.vnc.display, when);
     }
 
     if (rc != 0) {
diff --git a/hmp-commands.hx b/hmp-commands.hx
index cf723c69ac..9fbb207b35 100644
--- a/hmp-commands.hx
+++ b/hmp-commands.hx
@@ -1514,33 +1514,35 @@ ERST
 
     {
         .name       = "set_password",
-        .args_type  = "protocol:s,password:s,connected:s?",
-        .params     = "protocol password action-if-connected",
+        .args_type  = "protocol:s,password:s,display:-dV,connected:s?",
+        .params     = "protocol password [-d display] [action-if-connected]",
         .help       = "set spice/vnc password",
         .cmd        = hmp_set_password,
     },
 
 SRST
-``set_password [ vnc | spice ] password [ action-if-connected ]``
-  Change spice/vnc password.  *action-if-connected* specifies what
-  should happen in case a connection is established: *fail* makes the
-  password change fail.  *disconnect* changes the password and
+``set_password [ vnc | spice ] password [ -d display ] [ action-if-connected ]``
+  Change spice/vnc password.  *display* can be used with 'vnc' to specify
+  which display to set the password on.  *action-if-connected* specifies
+  what should happen in case a connection is established: *fail* makes
+  the password change fail.  *disconnect* changes the password and
   disconnects the client.  *keep* changes the password and keeps the
   connection up.  *keep* is the default.
 ERST
 
     {
         .name       = "expire_password",
-        .args_type  = "protocol:s,time:s",
-        .params     = "protocol time",
+        .args_type  = "protocol:s,time:s,display:-dV",
+        .params     = "protocol time [-d display]",
         .help       = "set spice/vnc password expire-time",
         .cmd        = hmp_expire_password,
     },
 
 SRST
-``expire_password [ vnc | spice ]`` *expire-time*
-  Specify when a password for spice/vnc becomes
-  invalid. *expire-time* accepts:
+``expire_password [ vnc | spice ] expire-time [ -d display ]``
+  Specify when a password for spice/vnc becomes invalid.
+  *display* behaves the same as in ``set_password``.
+  *expire-time* accepts:
 
   ``now``
     Invalidate password instantly.
-- 
2.31.1

[PULL 4/4] qapi/monitor: only allow 'keep' SetPasswordAction for VNC and deprecate

[Markus Armbruster]

From: Stefan Reiter <s.reiter@proxmox.com>

VNC only supports 'keep' here, enforce this via a seperate
SetPasswordActionVnc enum and mark the option 'deprecated' (as it is
useless with only one value possible).

Also add a deprecation note to docs.

Suggested-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
Message-Id: <20211021100135.4146766-5-s.reiter@proxmox.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 docs/about/deprecated.rst |  6 ++++++
 qapi/ui.json              | 21 ++++++++++++++++++++-
 monitor/qmp-cmds.c        |  5 -----
 3 files changed, 26 insertions(+), 6 deletions(-)

diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst
index be19317470..15b016e344 100644
--- a/docs/about/deprecated.rst
+++ b/docs/about/deprecated.rst
@@ -234,6 +234,12 @@ single ``bitmap``, the new ``block-export-add`` uses a list of ``bitmaps``.
 Member ``values`` in return value elements with meta-type ``enum`` is
 deprecated.  Use ``members`` instead.
 
+``set_password`` argument ``connected`` for VNC protocol (since 6.2)
+''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
+
+Only the value ``keep`` is and was ever supported for VNC. The (useless)
+argument will be dropped in a future version of QEMU.
+
 System accelerators
 -------------------
 
diff --git a/qapi/ui.json b/qapi/ui.json
index 99ac29ad9c..5292617b44 100644
--- a/qapi/ui.json
+++ b/qapi/ui.json
@@ -38,6 +38,20 @@
 { 'enum': 'SetPasswordAction',
   'data': [ 'fail', 'disconnect', 'keep' ] }
 
+##
+# @SetPasswordActionVnc:
+#
+# See @SetPasswordAction. VNC only supports the keep action. 'connection'
+# should just be omitted for VNC, this is kept for backwards compatibility.
+#
+# @keep: maintain existing clients
+#
+# Since: 6.2
+#
+##
+{ 'enum': 'SetPasswordActionVnc',
+  'data': [ 'keep' ] }
+
 ##
 # @SetPasswordOptions:
 #
@@ -83,12 +97,17 @@
 # @connected: How to handle existing clients when changing the
 #             password.
 #
+# Features:
+# @deprecated: For VNC, @connected will always be 'keep', parameter should be
+#              omitted.
+#
 # Since: 6.2
 #
 ##
 { 'struct': 'SetPasswordOptionsVnc',
   'data': { '*display': 'str',
-            '*connected': 'SetPasswordAction' }}
+            '*connected': { 'type': 'SetPasswordActionVnc',
+                            'features': ['deprecated'] } } }
 
 ##
 # @set_password:
diff --git a/monitor/qmp-cmds.c b/monitor/qmp-cmds.c
index 5637bd70b6..4825d0cbea 100644
--- a/monitor/qmp-cmds.c
+++ b/monitor/qmp-cmds.c
@@ -176,11 +176,6 @@ void qmp_set_password(SetPasswordOptions *opts, Error **errp)
                 opts->u.spice.connected == SET_PASSWORD_ACTION_DISCONNECT);
     } else {
         assert(opts->protocol == DISPLAY_PROTOCOL_VNC);
-        if (opts->u.vnc.connected != SET_PASSWORD_ACTION_KEEP) {
-            /* vnc supports "connected=keep" only */
-            error_setg(errp, QERR_INVALID_PARAMETER, "connected");
-            return;
-        }
         /* Note that setting an empty password will not disable login through
          * this interface. */
         rc = vnc_display_password(opts->u.vnc.display, opts->password);
-- 
2.31.1

Re: [PULL 0/4] Monitor patches patches for 2021-10-28

[Richard Henderson]

On 10/27/21 10:29 PM, Markus Armbruster wrote:
> The following changes since commit c52d69e7dbaaed0ffdef8125e79218672c30161d:
> 
>    Merge remote-tracking branch 'remotes/cschoenebeck/tags/pull-9p-20211027' into staging (2021-10-27 11:45:18 -0700)
> 
> are available in the Git repository at:
> 
>    git://repo.or.cz/qemu/armbru.git tags/pull-monitor-2021-10-28
> 
> for you to fetch changes up to 47c849357b57c1fbd3d3355c586c4784c6f4188e:
> 
>    qapi/monitor: only allow 'keep' SetPasswordAction for VNC and deprecate (2021-10-28 06:25:08 +0200)
> 
> ----------------------------------------------------------------
> Monitor patches patches for 2021-10-28
> 
> ----------------------------------------------------------------
> Stefan Reiter (4):
>        monitor/hmp: add support for flag argument with value
>        qapi/monitor: refactor set/expire_password with enums
>        qapi/monitor: allow VNC display id in set/expire_password
>        qapi/monitor: only allow 'keep' SetPasswordAction for VNC and deprecate
> 
>   docs/about/deprecated.rst  |   6 ++
>   qapi/ui.json               | 156 +++++++++++++++++++++++++++++++++++++++------
>   monitor/monitor-internal.h |   3 +-
>   monitor/hmp-cmds.c         |  48 +++++++++++++-
>   monitor/hmp.c              |  19 +++++-
>   monitor/qmp-cmds.c         |  54 ++++------------
>   hmp-commands.hx            |  24 +++----
>   7 files changed, 236 insertions(+), 74 deletions(-)

This has some sort of configuration error -- failures all across the cross-build tests:

qapi/qapi-visit-ui.c: In function 'visit_type_SetPasswordOptions_members':
qapi/qapi-visit-ui.c:64:10: error: 'DISPLAY_PROTOCOL_SPICE' undeclared (first use in this 
function); did you mean 'DISPLAY_PROTOCOL_VNC'?
    64 |     case DISPLAY_PROTOCOL_SPICE:
       |          ^~~~~~~~~~~~~~~~~~~~~~
       |          DISPLAY_PROTOCOL_VNC
qapi/qapi-visit-ui.c:64:10: note: each undeclared identifier is reported only once for 
each function it appears in

Can be reproduced with "make docker-test-build@fedora-i386-cross".


r~