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chardev: check if the chardev is registered for yanking 

Not all chardevs are created via qmp_chardev_open_socket(), and those
should not call the yank function registration, as this will eventually
assert() not being registered.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210204105232.834642-20-marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Marc-André Lureau 2021-02-04 14:52:31 +04:00 committed by Gerd Hoffmann
parent 3cddb8b9e0
commit ebae6477dc
1 changed files with 33 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

53
chardev/char-socket.c
View File

@ -417,8 +417,9 @@ static void tcp_chr_free_connection(Chardev *chr)
tcp_set_msgfds(chr, NULL, 0); tcp_set_msgfds(chr, NULL, 0);
remove_fd_in_watch(chr); remove_fd_in_watch(chr);
if (s->state == TCP_CHARDEV_STATE_CONNECTING if (s->registered_yank &&
|| s->state == TCP_CHARDEV_STATE_CONNECTED) { (s->state == TCP_CHARDEV_STATE_CONNECTING
|| s->state == TCP_CHARDEV_STATE_CONNECTED)) {
yank_unregister_function(CHARDEV_YANK_INSTANCE(chr->label), yank_unregister_function(CHARDEV_YANK_INSTANCE(chr->label),
yank_generic_iochannel, yank_generic_iochannel,
QIO_CHANNEL(s->sioc)); QIO_CHANNEL(s->sioc));
@ -940,9 +941,11 @@ static int tcp_chr_add_client(Chardev *chr, int fd)
} }
tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING); tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING);
tcp_chr_set_client_ioc_name(chr, sioc); tcp_chr_set_client_ioc_name(chr, sioc);
yank_register_function(CHARDEV_YANK_INSTANCE(chr->label), if (s->registered_yank) {
yank_generic_iochannel, yank_register_function(CHARDEV_YANK_INSTANCE(chr->label),
QIO_CHANNEL(sioc)); yank_generic_iochannel,
QIO_CHANNEL(sioc));
}
ret = tcp_chr_new_client(chr, sioc); ret = tcp_chr_new_client(chr, sioc);
object_unref(OBJECT(sioc)); object_unref(OBJECT(sioc));
return ret; return ret;
@ -957,9 +960,11 @@ static void tcp_chr_accept(QIONetListener *listener,
tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING); tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING);
tcp_chr_set_client_ioc_name(chr, cioc); tcp_chr_set_client_ioc_name(chr, cioc);
yank_register_function(CHARDEV_YANK_INSTANCE(chr->label), if (s->registered_yank) {
yank_generic_iochannel, yank_register_function(CHARDEV_YANK_INSTANCE(chr->label),
QIO_CHANNEL(cioc)); yank_generic_iochannel,
QIO_CHANNEL(cioc));
}
tcp_chr_new_client(chr, cioc); tcp_chr_new_client(chr, cioc);
} }
@ -975,9 +980,11 @@ static int tcp_chr_connect_client_sync(Chardev *chr, Error **errp)
object_unref(OBJECT(sioc)); object_unref(OBJECT(sioc));
return -1; return -1;
} }
yank_register_function(CHARDEV_YANK_INSTANCE(chr->label), if (s->registered_yank) {
yank_generic_iochannel, yank_register_function(CHARDEV_YANK_INSTANCE(chr->label),
QIO_CHANNEL(sioc)); yank_generic_iochannel,
QIO_CHANNEL(sioc));
}
tcp_chr_new_client(chr, sioc); tcp_chr_new_client(chr, sioc);
object_unref(OBJECT(sioc)); object_unref(OBJECT(sioc));
return 0; return 0;
@ -993,9 +1000,11 @@ static void tcp_chr_accept_server_sync(Chardev *chr)
tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING); tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING);
sioc = qio_net_listener_wait_client(s->listener); sioc = qio_net_listener_wait_client(s->listener);
tcp_chr_set_client_ioc_name(chr, sioc); tcp_chr_set_client_ioc_name(chr, sioc);
yank_register_function(CHARDEV_YANK_INSTANCE(chr->label), if (s->registered_yank) {
yank_generic_iochannel, yank_register_function(CHARDEV_YANK_INSTANCE(chr->label),
QIO_CHANNEL(sioc)); yank_generic_iochannel,
QIO_CHANNEL(sioc));
}
tcp_chr_new_client(chr, sioc); tcp_chr_new_client(chr, sioc);
object_unref(OBJECT(sioc)); object_unref(OBJECT(sioc));
} }
@ -1124,9 +1133,11 @@ static void qemu_chr_socket_connected(QIOTask *task, void *opaque)
if (qio_task_propagate_error(task, &err)) { if (qio_task_propagate_error(task, &err)) {
tcp_chr_change_state(s, TCP_CHARDEV_STATE_DISCONNECTED); tcp_chr_change_state(s, TCP_CHARDEV_STATE_DISCONNECTED);
yank_unregister_function(CHARDEV_YANK_INSTANCE(chr->label), if (s->registered_yank) {
yank_generic_iochannel, yank_unregister_function(CHARDEV_YANK_INSTANCE(chr->label),
QIO_CHANNEL(sioc)); yank_generic_iochannel,
QIO_CHANNEL(sioc));
}
check_report_connect_error(chr, err); check_report_connect_error(chr, err);
goto cleanup; goto cleanup;
} }
@ -1160,9 +1171,11 @@ static void tcp_chr_connect_client_async(Chardev *chr)
tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING); tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING);
sioc = qio_channel_socket_new(); sioc = qio_channel_socket_new();
tcp_chr_set_client_ioc_name(chr, sioc); tcp_chr_set_client_ioc_name(chr, sioc);
yank_register_function(CHARDEV_YANK_INSTANCE(chr->label), if (s->registered_yank) {
yank_generic_iochannel, yank_register_function(CHARDEV_YANK_INSTANCE(chr->label),
QIO_CHANNEL(sioc)); yank_generic_iochannel,
QIO_CHANNEL(sioc));
}
/* /*
* Normally code would use the qio_channel_socket_connect_async * Normally code would use the qio_channel_socket_connect_async
* method which uses a QIOTask + qio_task_set_error internally * method which uses a QIOTask + qio_task_set_error internally