projects / apple / libc.git / blame
| Commit | Line | Data |
|---|---|---|
| 5b2abdfb | 1 | .\" Copyright (c) 1993 |
| e9ce8d39 A |
2 | .\" The Regents of the University of California. All rights reserved. |
| 3 | .\" | |
| 4 | .\" Redistribution and use in source and binary forms, with or without | |
| 5 | .\" modification, are permitted provided that the following conditions | |
| 6 | .\" are met: | |
| 7 | .\" 1. Redistributions of source code must retain the above copyright | |
| 8 | .\" notice, this list of conditions and the following disclaimer. | |
| 9 | .\" 2. Redistributions in binary form must reproduce the above copyright | |
| 10 | .\" notice, this list of conditions and the following disclaimer in the | |
| 11 | .\" documentation and/or other materials provided with the distribution. | |
| 12 | .\" 3. All advertising materials mentioning features or use of this software | |
| 13 | .\" must display the following acknowledgement: | |
| 14 | .\" This product includes software developed by the University of | |
| 15 | .\" California, Berkeley and its contributors. | |
| 16 | .\" 4. Neither the name of the University nor the names of its contributors | |
| 17 | .\" may be used to endorse or promote products derived from this software | |
| 18 | .\" without specific prior written permission. | |
| 19 | .\" | |
| 20 | .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 21 | .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 22 | .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 23 | .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 24 | .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 25 | .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 26 | .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 27 | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 28 | .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 29 | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 30 | .\" SUCH DAMAGE. | |
| 31 | .\" | |
| 5b2abdfb A |
32 | .\" @(#)daemon.3 8.1 (Berkeley) 6/9/93 |
| 33 | .\" $FreeBSD: src/lib/libc/gen/daemon.3,v 1.10 2001/10/01 16:08:50 ru Exp $ | |
| e9ce8d39 | 34 | .\" |
| 5b2abdfb A |
35 | .Dd June 9, 1993 |
| 36 | .Dt DAEMON 3 | |
| e9ce8d39 A |
37 | .Os |
| 38 | .Sh NAME | |
| 5b2abdfb A |
39 | .Nm daemon |
| 40 | .Nd run in the background | |
| e9ce8d39 A |
41 | .Sh LIBRARY |
| 42 | .Lb libc | |
| 43 | .Sh SYNOPSIS | |
| 5b2abdfb | 44 | .In stdlib.h |
| e9ce8d39 | 45 | .Ft int |
| 5b2abdfb | 46 | .Fn daemon "int nochdir" "int noclose" |
| e9ce8d39 A |
47 | .Sh DESCRIPTION |
| 48 | The | |
| 5b2abdfb A |
49 | .Fn daemon |
| 50 | function is for programs wishing to detach themselves from the | |
| 51 | controlling terminal and run in the background as system daemons. | |
| 52 | .Pp | |
| 53 | Unless the argument | |
| 54 | .Fa nochdir | |
| 55 | is non-zero, | |
| 56 | .Fn daemon | |
| 57 | changes the current working directory to the root (``/''). | |
| 58 | .Pp | |
| 59 | Unless the argument | |
| 60 | .Fa noclose | |
| 61 | is non-zero, | |
| 62 | .Fn daemon | |
| 63 | will redirect standard input, standard output and standard error | |
| 64 | to ``/dev/null''. | |
| e9ce8d39 | 65 | .Sh ERRORS |
| 5b2abdfb A |
66 | If an error occurs, |
| 67 | .Fn daemon | |
| 68 | returns -1 and sets the global variable | |
| 69 | .Va errno | |
| 70 | to any of the errors specified for the library functions | |
| 71 | .Xr fork 2 | |
| 72 | and | |
| 73 | .Xr setsid 2 . | |
| e9ce8d39 | 74 | .Sh SEE ALSO |
| 5b2abdfb A |
75 | .Xr fork 2 , |
| 76 | .Xr setsid 2 | |
| e9ce8d39 A |
77 | .Sh HISTORY |
| 78 | The | |
| 5b2abdfb | 79 | .Fn daemon |
| e9ce8d39 A |
80 | function first appeared in |
| 81 | .Bx 4.4 . |