vnc: add a more descriptive error message

Currently qemu outputs some low-level error in qemu-sockets.c
when failed to start vnc server.
eg. 'getaddrinfo(127.0.0.1,5902): Name or service not known'

Some libvirt users could not know what's happened with this
unclear error message. This patch added a more descriptive
error message.

Signed-off-by: Amos Kong <akong@redhat.com>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
This commit is contained in:
Amos Kong 2012-06-30 10:02:20 +08:00 committed by Stefan Hajnoczi
parent ab41177044
commit 94b204ca4e

5
vl.c
View File

@ -3584,8 +3584,11 @@ int main(int argc, char **argv, char **envp)
/* init remote displays */
if (vnc_display) {
vnc_display_init(ds);
if (vnc_display_open(ds, vnc_display) < 0)
if (vnc_display_open(ds, vnc_display) < 0) {
fprintf(stderr, "Failed to start VNC server on `%s'\n",
vnc_display);
exit(1);
}
if (show_vnc_port) {
printf("VNC server running on `%s'\n", vnc_display_local_addr(ds));