has locked the serial line for us.
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef lint
-static char rcsid[] = "$Id: utils.c,v 1.1 1999/04/12 06:24:53 paulus Exp $";
+static char rcsid[] = "$Id: utils.c,v 1.2 1999/04/16 11:34:27 paulus Exp $";
#endif
#include <stdio.h>
lock_buffer[n] = 0;
pid = atoi(lock_buffer);
#endif /* LOCK_BINARY */
- if (pid == 0 || pid == getpid()
+ if (pid == getpid())
+ return 1; /* somebody else locked it for us */
+ if (pid == 0
|| (kill(pid, 0) == -1 && errno == ESRCH)) {
if (unlink (lock_file) == 0) {
notice("Removed stale lock on %s (pid %d)", dev, pid);