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Usenet 1994 October
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volume26
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munetd
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daemon.c
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C/C++ Source or Header
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1992-05-08
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2KB
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50 lines
/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted provided
* that: (1) source distributions retain this entire copyright notice and
* comment, and (2) distributions including binaries display the following
* acknowledgement: ``This product includes software developed by the
* University of California, Berkeley and its contributors'' in the
* documentation or other materials provided with the distribution and in
* all advertising materials mentioning features or use of this software.
* Neither the name of the University nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)daemon.c 1.2 (Berkeley) 6/29/90";
#endif /* LIBC_SCCS and not lint */
#include <sys/file.h>
daemon(nochdir, noclose)
int nochdir, noclose;
{
int cpid;
if ((cpid = fork()) == -1)
return (-1);
if (cpid)
exit(0);
(void) setsid();
if (!nochdir)
(void) chdir("/");
if (!noclose) {
int devnull = open("/dev/null", O_RDWR, 0);
if (devnull != -1) {
(void) dup2(devnull, 0);
(void) dup2(devnull, 1);
(void) dup2(devnull, 2);
if (devnull > 2)
(void) close(devnull);
}
}
}