sscanf(pidbuf, "%d", &oldpid) != 1) {
Emsg2(M_ERROR_TERM, 0, _("Cannot open pid file. %s ERR=%s\n"), fname, strerror(errno));
}
- /* See if other Bacula is still alive */
- if (kill(oldpid, 0) != -1 || errno != ESRCH) {
+ /* Some OSes (IRIX) don't bother to clean out the old pid files after a crash, and
+ * since they use a deterministic algorithm for assigning PIDs, we can have
+ * pid conflicts with the old PID file after a reboot.
+ * The intent the following code is to check if the oldpid read from the pid
+ * file is the same as the currently executing process's pid,
+ * and if oldpid == getpid(), skip the attempt to
+ * kill(oldpid,0), since the attempt is guaranteed to succeed,
+ * but the success won't actually mean that there is an
+ * another Bacula process already running.
+ * For more details see bug #797.
+ */
+ if ((oldpid != (int)getpid()) && (kill(oldpid, 0) != -1 || errno != ESRCH)) {
Emsg3(M_ERROR_TERM, 0, _("%s is already running. pid=%d\nCheck file %s\n"),
progname, oldpid, fname);
}