Last change
on this file since 3080 was 1765, checked in by Bruno Cornec, 17 years ago |
Update to busybox 1.7.2
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-
Property svn:eol-style
set to
native
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File size:
891 bytes
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Rev | Line | |
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[1765] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * pid file routines
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| 4 | *
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| 5 | * Copyright (C) 2007 by Stephane Billiart <stephane.billiart@gmail.com>
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| 6 | *
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| 7 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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| 8 | */
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| 9 |
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| 10 | /* Override ENABLE_FEATURE_PIDFILE */
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| 11 | #define WANT_PIDFILE 1
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| 12 | #include "libbb.h"
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| 13 |
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| 14 | smallint wrote_pidfile;
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| 15 |
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| 16 | void write_pidfile(const char *path)
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| 17 | {
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| 18 | int pid_fd;
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| 19 | char *end;
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| 20 | char buf[sizeof(int)*3 + 2];
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| 21 | struct stat sb;
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| 22 |
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| 23 | if (!path)
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| 24 | return;
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| 25 | /* we will overwrite stale pidfile */
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| 26 | pid_fd = open(path, O_WRONLY|O_CREAT|O_TRUNC, 0666);
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| 27 | if (pid_fd < 0)
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| 28 | return;
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| 29 |
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| 30 | /* path can be "/dev/null"! Test for such cases */
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| 31 | wrote_pidfile = (fstat(pid_fd, &sb) == 0) && S_ISREG(sb.st_mode);
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| 32 |
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| 33 | if (wrote_pidfile) {
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| 34 | /* few bytes larger, but doesn't use stdio */
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| 35 | end = utoa_to_buf(getpid(), buf, sizeof(buf));
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| 36 | *end = '\n';
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| 37 | full_write(pid_fd, buf, end - buf + 1);
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| 38 | }
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| 39 | close(pid_fd);
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| 40 | }
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