void cfg_p11path (char *item, int itemno, char *value) {
#ifdef DEBUG
fprintf (stdout, "DEBUG: DECLARE %s AS %s\n", item, value);
#endif
cfg_setvar (item, itemno, value);
//TODO:WHY?// free_p11pin ();
}
void cfg_pidfile (char *item, int itemno, char *value) {
static int fh = 0;
if (fh) {
fprintf (stderr, "You can specify only one PID file\n");
exit (1);
}
cfg_setvar (item, CFGVAR_DAEMON_PIDFILE, value);
atexit (unlink_pidfile);
fh = open (value, O_RDWR | O_CREAT, 0664);
char pidbuf [10];
if (fh < 0) {
perror ("Failed to open PID file");
exit (1);
}
retry:
if (flock (fh, LOCK_EX | LOCK_NB) != 0) {
if (errno == EWOULDBLOCK) {
pid_t oldpid;
bzero (pidbuf, sizeof (pidbuf));
read (fh, pidbuf, sizeof (pidbuf)-1);
oldpid = atoi (pidbuf);
if (kill_old_pid) {
if (kill (oldpid, SIGHUP) == 0) {
fprintf (stderr, "Sent hangup to old daemon with PID %s\n", pidbuf);
sleep (1);
}
lseek (fh, 0, SEEK_SET);
errno = 0;
goto retry;
}
if (kill (oldpid, 0) != -1) {
fprintf (stderr, "Another daemon owns the PID file: process %s", pidbuf);
exit (1);
}
} else {
perror ("Failed to own the PID file");
exit (1);
}
}
snprintf (pidbuf, sizeof (pidbuf)-1, "%d\n", getpid ());
if (write (fh, pidbuf, strlen (pidbuf)) != strlen (pidbuf)) {
perror ("Failed to write all bytes to PID file");
exit (1);
}
ftruncate (fh, strlen (pidbuf));
fsync (fh);
//
// Note: The file remains open -- to sustain the flock on it
//
}
