diff options
| author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2023-03-06 16:27:45 +0400 |
|---|---|---|
| committer | Marc-André Lureau <marcandre.lureau@redhat.com> | 2023-03-13 15:40:41 +0400 |
| commit | bf5de8c5d66552721fefe08de849c115ca366b56 (patch) | |
| tree | b03ab6660003d38914e76f39d660fe80d8e29c90 | |
| parent | 0a237f4de45b8addbc35a316ee1c0bc7a4887da7 (diff) | |
qmp: 'add_client' actually expects sockets
Whether it is SPICE, VNC, D-Bus, or the socket chardev, they all
actually expect a socket kind or will fail in different ways at runtime.
Throw an error early if the given 'add_client' fd is not a socket, and
close it to avoid leaks.
This allows to replace the close() call with a more correct & portable
closesocket() version.
(this will allow importing sockets on Windows with a specialized command
in the following patch, while keeping the remaining monitor associated
sockets/add_client code & usage untouched)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20230306122751.2355515-6-marcandre.lureau@redhat.com>
| -rw-r--r-- | monitor/qmp-cmds.c | 7 | ||||
| -rw-r--r-- | qapi/misc.json | 3 |
2 files changed, 10 insertions, 0 deletions
diff --git a/monitor/qmp-cmds.c b/monitor/qmp-cmds.c index 859012aef4..b0f948d337 100644 --- a/monitor/qmp-cmds.c +++ b/monitor/qmp-cmds.c @@ -14,6 +14,7 @@ */ #include "qemu/osdep.h" +#include "qemu/sockets.h" #include "monitor-internal.h" #include "monitor/qdev.h" #include "monitor/qmp-helpers.h" @@ -139,6 +140,12 @@ void qmp_add_client(const char *protocol, const char *fdname, return; } + if (!fd_is_socket(fd)) { + error_setg(errp, "parameter @fdname must name a socket"); + close(fd); + return; + } + for (i = 0; i < ARRAY_SIZE(protocol_table); i++) { if (!strcmp(protocol, protocol_table[i].name)) { if (!protocol_table[i].add_client(fd, has_skipauth, skipauth, diff --git a/qapi/misc.json b/qapi/misc.json index 27ef5a2b20..f0217cfba0 100644 --- a/qapi/misc.json +++ b/qapi/misc.json @@ -14,6 +14,9 @@ # Allow client connections for VNC, Spice and socket based # character devices to be passed in to QEMU via SCM_RIGHTS. # +# If the FD associated with @fdname is not a socket, the command will fail and +# the FD will be closed. +# # @protocol: protocol name. Valid names are "vnc", "spice", "@dbus-display" or # the name of a character device (eg. from -chardev id=XXXX) # |