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.\" Hey Emacs! This file is -*- nroff -*- source.
.\"
.\" Copyright (c) 1992 Drew Eckhardt (drew@cs.colorado.edu), March 28, 1992
.\"
.\" Permission is granted to make and distribute verbatim copies of this
.\" manual provided the copyright notice and this permission notice are
.\" preserved on all copies.
.\"
.\" Permission is granted to copy and distribute modified versions of this
.\" manual under the conditions for verbatim copying, provided that the
.\" entire resulting derived work is distributed under the terms of a
.\" permission notice identical to this one
.\"
.\" Since the Linux kernel and libraries are constantly changing, this
.\" manual page may be incorrect or out-of-date. The author(s) assume no
.\" responsibility for errors or omissions, or for damages resulting from
.\" the use of the information contained herein. The author(s) may not
.\" have taken the same level of care in the production of this manual,
.\" which is licensed free of charge, as they might when working
.\" professionally.
.\"
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
.\"
.\" Modified by Michael Haardt (michael@moria.de)
.\" Modified Sat Jul 24 13:22:07 1993 by Rik Faith (faith@cs.unc.edu)
.\" Modified 21 Aug 1994 by Michael Chastain (mec@shell.portal.com):
.\" Referenced 'clone(2)'.
.\" Modified 10 June 1995 by Andries Brouwer (aeb@cwi.nl)
.\" Modified 18 Apr 1996 by Andries Brouwer (aeb@cwi.nl)
.\" Modified 1 Nov 1999 by Andries Brouwer (aeb@cwi.nl)
.\"
.\" Japanese Version Copyright (c) 1996 TABATA Tomohira
.\" all rights reserved.
.\" Translated Thu Jun 27 20:35:06 JST 1996
.\" by TABATA Tomohira <loba@k2.t.u-tokyo.ac.jp>
.\" Modified Sun Dec 14 00:43:22 JST 1997
.\" by HANATAKA Shinya <hanataka@abyss.rim.or.jp>
.\"
.TH FORK 2 "10 June 1995" "Linux 1.2.9" "Linux Programmer's Manual"
.SH ̾
fork, \- ҥץ
.SH
.B #include <unistd.h>
.sp
.B pid_t fork(void);
.SH
.B fork
ϿƥץPID(ץ ID) PPID(ƥץ ID)
ʤҥץ롣
λ̤ 0 ꤵ
եåαƤ륷ʥϰѤʤ
.PP
Linux Ǥϡ
.B fork
ԡ(copy-on-write)ڡѤƼƤ롣
äơfork ɬפʻ֤ȥ
ƥץΥڡơ֥ʣ뤿ȡ
ҥץȤΥ¤ΤɬפʤΤΤߤǤ롣
.SH ֤
硢Ƥμ¹ԥåɤˤϻҥץ PID ֤졤
Ҥμ¹ԥåɤˤ 0 ֤롣
Ԥ硢ƥץ -1 ֤ҥץʤ
ޤ
.I errno
Ŭڤꤵ롣
.SH 顼
.TP
.B EAGAIN
.B fork
ϡƥץΥڡơ֥ԡҥץΥ¤
ɬפʥƤ뤳ȤǤʤä
.SH
.B fork
SVr4, SVID, POSIX, X/OPEN, BSD 4.3 ˽Ƥ롣
.SH Ϣ
.BR clone (2),
.BR execve (2),
.BR vfork (2),
.BR wait (2)
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