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.\"     @(#)getpgrp.2	6.4 (Berkeley) 3/10/91
.\"
.\" Modified 1993-07-24 by Rik Faith <faith@cs.unc.edu>
.\" Modified 1995-04-15 by Michael Chastain <mec@shell.portal.com>:
.\"   Added 'getpgid'.
.\" Modified 1996-07-21 by Andries Brouwer <aeb@cwi.nl>
.\" Modified 1996-11-06 by Eric S. Raymond <esr@thyrsus.com>
.\" Modified 1999-09-02 by Michael Haardt <michael@moria.de>
.\" Modified 2002-01-18 by Michael Kerrisk <mtk-manpages@gmx.net>
.\" Modified 2003-01-20 by Andries Brouwer <aeb@cwi.nl>
.\"
.\" Japanese Version Copyright (c) 1997-1999 HANATAKA Shinya
.\"         all rights reserved.
.\" Translated Sun Nov 21 18:54:10 JST 1999
.\"         by HANATAKA Shinya <hanataka@abyss.rim.or.jp>
.\" Updated Fri Feb  7 JST 2003 by Kentaro Shirakata <argrath@ub32.org>
.\" Updated Sun Feb 23 JST 2003 by Kentaro Shirakata <argrath@ub32.org>
.\"
.\"WORD:	process group		ץ롼
.\"WORD:	process group ID	ץ롼ID
.\"WORD:	terminal		ü
.\"WORD:	foreground		ե
.\"WORD:	block			(block)
.\"WORD:	job control		֡ȥ
.\"
.TH SETPGID 2 2003-01-20 "Linux" "Linux Programmer's Manual"
.SH ̾
setpgid, getpgid, setpgrp, getpgrp \- ץ롼(process group)/Ԥʤ
.SH 
.B #include <unistd.h>
.sp
.BI "int setpgid(pid_t " pid ", pid_t " pgid );
.br
.BI "pid_t getpgid(pid_t " pid );
.br
.B int setpgrp(void);
.br
.B pid_t getpgrp(void);
.SH 
.B setpgid

.I pid
ǻꤷץΥץ롼ID 
.IR pgid
ꤹ롣
⤷
.I pid
ʤСƤӽФץΥץID  pid ȤƻѤ롣⤷
.I pgid
ʤС
.I pid
ǻꤵ줿ץΥץID  pgid ȤƻѤ롣
\fBsetpgid\fP ץ򤢤ץ롼פ̤Υ롼פ
ư뤿˻Ѥ(Υϥѥץ饤
ˤԤ)ξΥץ롼פƱå
ǤʤФʤʤξ \fIpgid\fP ϻä٤¸
ץ롼פꤷΥå ID ϻäץ
å ID ˰פʤФʤʤ

.B getpgid

.IR pid
ǻꤵ줿ץΥץ롼ID ֤
⤷
.I pid
ʤСƤӽФץΥץID  pid ȤƻѤ롣

.B setpgrp()
ƤӽФ
.B setpgid(0,0)
Ǥ롣

Ʊͤˡ
.B getpgrp()

.B getpgid(0)

ƥץ롼פϥåΥСǤꡢƥץ
Υץ롼פСǤ륻åΥСǤ롣

ץ롼פϥʥ䡢ü(terminal)ˤä
Ϥ׵Ĵ(arbitrate)˻Ѥ: 
üƱץ롼ID ĥץϥե
Ȥɤ߹ߤԤʤȤǤ¾Υץüɤ߹ߤ
ԤʤȤ硢ʥˤä(block)롣

Υ
.BR csh (1)
Τ褦ʥץˤäơ֡ȥ(job control)
κݤ˥ץ롼פ뤿˻Ѥ롣
.BR termios (3)
˵ҤƤ
.B TIOCGPGRP

.B TIOCSPGRP
üΥץ롼פ/ꤹΤ˻Ѥ롣

⤷åüäƤơCLOCAL ꤵƤ餺
ϥ󥰥åפ硢å󡦥꡼ SIGHUP 롣
å󡦥꡼λˤϤüΥեɤ
ץ롼פ˽°ƤΥץ SIGHUP ʥ뤬롣

ץνλˤäƥץ롼פɻˤʤäǡ
⤷˸ɻˤʤäץ롼פΥСߤȡ
˸ɻˤʤäץ롼פƤΥץ SIGHUP ʥ
³ SIGCONT ʥ뤬롣

.SH ֤
.BR setpgid "  " setpgrp
硢֤顼ξ \-1 ֤
.I errno
Ŭڤꤵ롣

.B getpgid
ץ롼פ֤
顼ξ \-1 ֤
.I errno
Ŭڤꤵ롣

.B getpgrp
Ͼ˸ߤΥץΥץ롼פ֤
.SH 顼
.TP
.B EACCES
ƤӽФץλҥץΥץ롼 ID ѹ褦Ȥ
Ǥˤλҥץ \fBexecve\fP ¹ԤƤ
(\fBsetpgid\fP, \fBsetpgrp\fP)
.TP
.B EINVAL
.I pgid
 0 꾮(\fBsetpgid\fP, \fBsetpgrp\fP)
.TP
.B EPERM
ץۤʤ륻åΥץ롼פ˰ư褦Ȥ
ޤϸƤӽФץλҥץΥץ롼 ID ѹ褦
λҥץ̤Υåä
ޤϥå꡼Υץ롼 ID ѹ褦Ȥ
(\fBsetpgid\fP, \fBsetpgrp\fP)
.TP
.B ESRCH
.BR getpgid ξ:
.I pid
ɤΥץˤפʤ
.BR setpgid ξ:
.I pid
ȥץǤϤʤȥץλҥץǤʤ
.SH 
.B setpgid 
ؿ
.B getpgrp
ؿ POSIX.1 ˽򤷤Ƥ롣
.B setpgrp
ؿ BSD 4.2 ͳ褹롣
.B getpgid 
ؿ SVr4 ˽򤷤Ƥ롣
.SH 
POSIX 
.B setpgid
 BSD 
.BR setpgrp 
ؿ餭Ƥ롣ޤ SysV ˤƱ̾δؿ뤬
.BR setsid (2)
ƱΤǤ롣
.LP
glibc ǥץȥפ뤿ˤϡ_XOPEN_SOURCE 
_XOPEN_SOURCE_EXTENDED ξȤ
뤫"#define _XOPEN_SOURCE \fIn\fP" Ѥ롣
 \fIn\fP  500 ʾǤ롣
.SH Ϣ
.BR getuid (2),
.BR setsid (2),
.BR tcgetpgrp (3),
.BR tcsetpgrp (3),
.BR termios (3)