Last change
on this file since 3531 was 3320, checked in by Bruno Cornec, 10 years ago |
- Re-add (thanks git BTW) the 2.2.9 branch which had been destroyed in
the move to 3.0
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-
Property svn:eol-style
set to
native
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File size:
893 bytes
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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 source tree.
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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 FAST_FUNC 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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