static void cap_callback(struct proto_subscriber unused_ *s, struct proto_info const unused_ *last, size_t cap_len, uint8_t const unused_ *packet, struct timeval const unused_ *now)
{
if (! display_help) try_display(now);
mutex_lock(&dup_lock);
init();
nb_nodups ++;
sz_nodups += cap_len;
mutex_unlock(&dup_lock);
}
static char *
create_lock_file (int display, int *display_out)
{
char *filename;
int fd;
char pid[11];
int size;
int number_of_tries = 0;
while (!try_display (display, &filename, &fd))
{
display++;
number_of_tries++;
/* If we can't get a display after 50 times, then something's wrong. Just
* abort in this case. */
if (number_of_tries >= 50)
return NULL;
}
/* Subtle detail: we use the pid of the wayland compositor, not the xserver
* in the lock file. */
size = snprintf (pid, 11, "%10d\n", getpid ());
if (size != 11 || write (fd, pid, 11) != 11)
{
unlink (filename);
close (fd);
g_warning ("failed to write pid to lock file %s", filename);
g_free (filename);
return NULL;
}
close (fd);
*display_out = display;
return filename;
}