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42 lines
751 B
C
42 lines
751 B
C
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/*
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* lib/daemon.c - Helper functions for proper daemonification
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*
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* Written 2011 by Werner Almesberger
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* Copyright 2011 Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include "daemon.h"
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pid_t daemonize(void)
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{
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pid_t pid;
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int i;
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pid = fork();
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if (pid < 0) {
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perror("fork");
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exit(1);
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}
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if (pid)
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return pid;
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if (setsid() < 0) {
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perror("setsid");
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exit(1);
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}
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for (i = 0; i <= 2; i++)
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(void) close(i);
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(void) chdir("/");
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return 0;
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}
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