mirror of
https://github.com/topjohnwu/ndk-busybox.git
synced 2024-11-27 21:50:32 +00:00
0ef64bdb40
This change retains "or later" state! No licensing _changes_ here, only form is adjusted (article, space between "GPL" and "v2" and so on). Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
41 lines
893 B
C
41 lines
893 B
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* pid file routines
|
|
*
|
|
* Copyright (C) 2007 by Stephane Billiart <stephane.billiart@gmail.com>
|
|
*
|
|
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
|
*/
|
|
|
|
/* Override ENABLE_FEATURE_PIDFILE */
|
|
#define WANT_PIDFILE 1
|
|
#include "libbb.h"
|
|
|
|
smallint wrote_pidfile;
|
|
|
|
void FAST_FUNC write_pidfile(const char *path)
|
|
{
|
|
int pid_fd;
|
|
char *end;
|
|
char buf[sizeof(int)*3 + 2];
|
|
struct stat sb;
|
|
|
|
if (!path)
|
|
return;
|
|
/* we will overwrite stale pidfile */
|
|
pid_fd = open(path, O_WRONLY|O_CREAT|O_TRUNC, 0666);
|
|
if (pid_fd < 0)
|
|
return;
|
|
|
|
/* path can be "/dev/null"! Test for such cases */
|
|
wrote_pidfile = (fstat(pid_fd, &sb) == 0) && S_ISREG(sb.st_mode);
|
|
|
|
if (wrote_pidfile) {
|
|
/* few bytes larger, but doesn't use stdio */
|
|
end = utoa_to_buf(getpid(), buf, sizeof(buf));
|
|
*end = '\n';
|
|
full_write(pid_fd, buf, end - buf + 1);
|
|
}
|
|
close(pid_fd);
|
|
}
|