# 2.11BSD#431 - /usr/src/lib/libc/gen/daemon.c

##### Functions

    daemon            X

       1: /*-
       2:  * Copyright (c) 1990, 1993
       3:  *	The Regents of the University of California.  All rights reserved.
       4:  *
       5:  * Redistribution and use in source and binary forms, with or without
       6:  * modification, are permitted provided that the following conditions
       7:  * are met:
       8:  * 1. Redistributions of source code must retain the above copyright
       9:  *    notice, this list of conditions and the following disclaimer.
      10:  * 2. Redistributions in binary form must reproduce the above copyright
      11:  *    notice, this list of conditions and the following disclaimer in the
      12:  *    documentation and/or other materials provided with the distribution.
      13:  * 3. All advertising materials mentioning features or use of this software
      14:  *    must display the following acknowledgement:
      15:  *	This product includes software developed by the University of
      16:  *	California, Berkeley and its contributors.
      17:  * 4. Neither the name of the University nor the names of its contributors
      18:  *    may be used to endorse or promote products derived from this software
      19:  *    without specific prior written permission.
      20:  *
      21:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
      22:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
      23:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
      24:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
      25:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
      26:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
      27:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
      28:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
      29:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
      30:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
      31:  * SUCH DAMAGE.
      32:  */
      33:
      34: #if defined(LIBC_SCCS) && !defined(lint)
      35: static char sccsid[] = "@(#)daemon.c	8.1.1 (2.11BSD GTE) 2/3/95";
      36: #endif /* LIBC_SCCS and not lint */
      37:
      38: #include <fcntl.h>
      39: #include <sys/ioctl.h>
      40: #include <paths.h>
      41:
      42: int
      43: daemon(nochdir, noclose)
      44:     int nochdir, noclose;
      45: {
      46:     register int fd;
      47:
      48:     switch (fork()) {
      49:     case -1:
      50:         return (-1);
      51:     case 0:
      52:         break;
      53:     default:
      54:         _exit(0);
      55:     }
      56:
      57:     if ((fd = open(_PATH_TTY, O_RDWR)) >= 0) {
      58:         ioctl(fd, TIOCNOTTY, 0);
      59:         close(fd);
      60:     }
      61:
      62:     if (!nochdir)
      63:         (void)chdir("/");
      64:
      65:     if (!noclose && (fd = open(_PATH_DEVNULL, O_RDWR, 0)) != -1) {
      66:         (void)dup2(fd, 0);
      67:         (void)dup2(fd, 1);
      68:         (void)dup2(fd, 2);
      69:         if (fd > 2)
      70:             (void)close(fd);
      71:     }
      72:     return(0);
      73: }

#### Defined functions

daemon defined in line 42; used 5 times

- in /usr/include/stdlib.h line 94
- in /usr/src/libexec/acctd/acctd.c line 89
- in /usr/src/usr.sbin/inetd/inetd.c line 283
- in /usr/src/usr.sbin/syslogd/syslogd.c line 219
- in /usr/src/usr.sbin/update/update.c line 52

#### Defined variables

sccsid defined in line 35; never used

Last modified: 1995-02-07 Generated: 2016-12-26 | Generated by src2html V0.67 page hit count: 508 |