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-rw-r--r--slock.c17
1 files changed, 14 insertions, 3 deletions
diff --git a/slock.c b/slock.c
index 320ed2b..154a091 100644
--- a/slock.c
+++ b/slock.c
@@ -1,3 +1,4 @@
+
/* See LICENSE file for license details. */
#define _XOPEN_SOURCE 500
#if HAVE_SHADOW_H
@@ -211,9 +212,9 @@ lockscreen(Display *dpy, int screen) {
break;
usleep(1000);
}
- running = (len > 0);
}
+ running &= (len > 0);
if(!running) {
unlockscreen(dpy, lock);
lock = NULL;
@@ -257,10 +258,20 @@ main(int argc, char **argv) {
locks = malloc(sizeof(Lock *) * nscreens);
if(locks == NULL)
die("slock: malloc: %s", strerror(errno));
- for(screen = 0; screen < nscreens; screen++)
- locks[screen] = lockscreen(dpy, screen);
+ int nlocks = 0;
+ for(screen = 0; screen < nscreens; screen++) {
+ if ( (locks[screen] = lockscreen(dpy, screen)) != NULL)
+ nlocks++;
+ }
XSync(dpy, False);
+ /* Did we actually manage to lock something? */
+ if (nlocks == 0) { // nothing to protect
+ free(locks);
+ XCloseDisplay(dpy);
+ return 1;
+ }
+
/* Everything is now blank. Now wait for the correct password. */
#ifdef HAVE_BSD_AUTH
readpw(dpy);