networking/interface.c: huke remaining big statics; use malloc for INET[6]_rresolve
[oweals/busybox.git] / libbb / pidfile.c
1 /* vi: set sw=4 ts=4: */
2 /*
3  * pid file routines
4  *
5  * Copyright (C) 2007 by Stephane Billiart <stephane.billiart@gmail.com>
6  *
7  * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
8  */
9 #include "libbb.h"
10
11 #if ENABLE_FEATURE_PIDFILE
12 int write_pidfile(const char *path)
13 {
14         int pid_fd;
15         char *end;
16         char buf[sizeof(int)*3 + 2];
17
18         /* we will overwrite stale pidfile */
19         pid_fd = open(path, O_WRONLY|O_CREAT|O_TRUNC, 0666);
20         if (pid_fd < 0)
21                 return 0;
22         /* few bytes larger, but doesn't use stdio */
23         end = utoa_to_buf(getpid(), buf, sizeof(buf));
24         end[0] = '\n';
25         full_write(pid_fd, buf, end - buf + 1);
26         close(pid_fd);
27         return 1;
28 }
29 #endif