static void stop1(const char *lockfile, const char *pidfile)
{
int lockfd;
pid_t p;
if ((lockfd=open(lockfile, O_RDWR|O_CREAT, 0600)) < 0)
{
perror(lockfile);
exit(1);
}
if ( ll_lock_ex_test(lockfd) == 0) /* No daemon process running */
{
close(lockfd);
exit (0); /* That was easy! */
}
signal(SIGCHLD, sigexit);
if ((p=fork()) == -1)
{
perror("fork");
exit(1);
}
if (p) /* Parent - first sends a SIGTERM, then a SIGKILL */
{
int signum=SIGTERM;
close(lockfd);
for (;; sleep(10))
{
FILE *fp;
int c;
if ((fp=fopen(pidfile, "r")) == NULL)
continue;
p=0;
while ((c=getc(fp)) != EOF && c != '\n')
{
if (isdigit(c))
p=p*10+(c-'0');
}
fclose(fp);
if (p)
kill(p, signum);
signum=SIGKILL;
}
}
if (ll_lock_ex(lockfd))
perror("lock");
close(lockfd);
exit(0);
}
static int start1(const char *lockfile, int fd)
{
int lockfd;
#if HAVE_SETPGRP
#if SETPGRP_VOID
setpgrp();
#else
setpgrp(0, 0);
#endif
#endif
#ifdef TIOCNOTTY
{
int fd=open("/dev/tty", O_RDWR);
if (fd >= 0)
{
ioctl(fd, TIOCNOTTY, 0);
close(fd);
}
}
#endif
/* Attempt to obtain a lock */
if ((lockfd=open(lockfile, O_RDWR|O_CREAT, 0600)) < 0)
{
perror(lockfile);
exit(1);
}
#ifdef FD_CLOEXEC
if (fcntl(lockfd, F_SETFD, FD_CLOEXEC) < 0)
{
perror("fcntl");
close(lockfd);
exit(1);
}
#endif
if (ll_lock_ex_test(lockfd))
{
write(fd, "", 1);
close(fd);
exit (0); /* Already running, pretend success */
}
/*
** Return >0 to main, so it can continue main's setup.
*/
return (fd);
}
int ll_daemon_restart(const char *lockfile, const char *pidfile)
{
int lockfd;
pid_t p;
FILE *fp;
int c;
if ((lockfd=open(lockfile, O_RDWR|O_CREAT, 0600)) < 0)
{
perror(lockfile);
return (1);
}
if ( ll_lock_ex_test(lockfd) == 0) /* No daemon process running */
{
close(lockfd);
return (0); /* That was easy! */
}
close(lockfd);
if ((fp=fopen(pidfile, "r")) == NULL)
return (0);
p=0;
while ((c=getc(fp)) != EOF && c != '\n')
{
if (isdigit(c))
p=p*10+(c-'0');
}
fclose(fp);
if (p)
kill(p, SIGHUP);
return (0);
}
static int start1(const char *lockfile, int fd)
{
int lockfd, maxfd;
#if HAVE_SETPGRP
#if SETPGRP_VOID
setpgrp();
#else
setpgrp(0, 0);
#endif
#endif
#ifdef TIOCNOTTY
{
int fd=open("/dev/tty", O_RDWR);
if (fd >= 0)
{
ioctl(fd, TIOCNOTTY, 0);
close(fd);
}
}
#endif
/* Attempt to obtain a lock */
lockfd=open(lockfile, O_RDWR|O_CREAT, 0600);
if (lockfd < 0)
{
/* Perhaps an upgraded daemon runs under new uid? */
unlink(lockfile);
lockfd=open(lockfile, O_RDWR|O_CREAT, 0600);
}
#if HAVE_GETDTABLESIZE
maxfd=getdtablesize()-1;
#elif defined(OPEN_MAX)
maxfd=OPEN_MAX-1;
#elif HAVE_SYSCONF && defined(_SC_OPEN_MAX)
if ((maxfd=sysconf(_SC_OPEN_MAX)) < 0)
maxfd=63;
else if (maxfd > 0)
maxfd--;
#else
maxfd=63;
#endif
if (lockfd < 0 || dup2(lockfd, maxfd) != maxfd)
{
perror(lockfile);
exit(1);
}
close(lockfd);
lockfd=maxfd;
#ifdef FD_CLOEXEC
if (fcntl(lockfd, F_SETFD, FD_CLOEXEC) < 0)
{
perror("fcntl");
close(lockfd);
exit(1);
}
#endif
if (ll_lock_ex_test(lockfd))
{
if (write(fd, "", 1) != 1)
exit(1); /* Shouldn't happen */
close(fd);
exit (0); /* Already running, pretend success */
}
/*
** Return >0 to main, so it can continue main's setup.
*/
return (fd);
}
