.\" Copyright 1993 Giorgio Ciucci <giorgio@crcc.it>
.\"
.\" 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.\" manual page may be incorrect or out-of-date.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.
.\"
.\" Added correction due to Nick Duffek <nsd@bbc.com>, aeb, 960426
.\" Modified Wed Nov  6 04:00:31 1996 by Eric S. Raymond <esr@thyrsus.com>
.\"
.\" Japanese Version Copyright (c) 1997 HANATAKA Shinya
.\"         all rights reserved.
.\" Translated Sun Feb 23 16:52:20 JST 1997
.\"         by HANATAKA Shinya <hanataka@abyss.rim.or.jp>
.\"
.\"WORD:	message			å
.\"WORD:	queue			塼
.\"WORD:	identifier		̻
.\"WORD:	argument		
.\"WORD:	owner			ͭ
.\"WORD:	group			롼
.\"WORD:	other			¾
.\"WORD:	initialize		
.\"WORD:	effective user-ID	¸桼ID
.\"WORD:	effective group-ID	¸롼ID
.\"WORD:	current time		߻
.\"WORD:	policy			
.\"
.TH MSGGET 2 "November 1, 1993" "Linux 0.99.13" "Linux Programmer's Manual" 
.SH ̾
msgget \- å塼̻Ҥ
.SH 
.nf
.B
# include <sys/types.h>
.B
# include <sys/ipc.h>
.B
# include <sys/msg.h>
.fi
.sp
.BI "int msgget ( key_t " key ,
.BI "int "msgflg " )"
.SH 
δؿ
.I key 
ͤδϢå塼̻(identifier)֤
.I key

.B IPC_PRIVATE
ꤵ줿Ͽå塼롣
ޤ
.I key

.BR IPC_PRIVATE 
ǤʤƤ
.IR key
˴Ϣå塼¸ߤ
.I msgflg

.B IPC_CREAT
ꤵ줿
(
.IB msgflg & IPC_CREAT
Ǥʤ)Ͽå塼롣
.I msgflg

.B IPC_CREAT

.B IPC_EXCL
¸ߤϴ¸ߤå塼ºŤ
.BR open (2)
ƥࡦ mode 
.B O_CREAT

.B O_EXCL
ꤷƱ̤ͤ: 㤨
.I msgflg

.B IPC_CREAT

.B IPC_EXCL
ξꤵ줪ꡢ
.IR key 
Фå塼¸ߤ
.B msgget
ϼԤ롣
.PP
ξ硢
.I msgflg
β 9 ӥåȤ
Υå塼Υĥѥ᡼롣
εĥӥåȤ
.BR open (2)

.BR creat (2)
ƥࡦΥĥѥ᡼ƱƱ̣
Ѥ롣(¹ԵĤϻѤƤʤ)
.PP
ˡκݤˡƥϥå塼ǡ¤
.B msqid_ds
ʲΤ褦˽:
.IP
.B msg_perm.cuid

.B msg_perm.uid
ˤϸƤӽФץμ¸(effective)桼 ID ꤵ롣
.IP
.B msg_perm.cgid

.B msg_perm.gid
ˤϸƤӽФץμ¸롼 ID ꤵ롣
.IP
.B msg_perm.mode
β 9 ӥåȤˤ
.IR msgflg 
β 9 ӥåȤꤵ롣
.IP
.BR msg_qnum ,
.BR msg_lspid ,
.BR msg_lrpid ,
.BR msg_stime ,
.B msg_rtime
 0 ꤵ롣
.IP
.B msg_ctime
ˤϸ߻郎ꤵ롣
.IP
.B msg_qbytes
ˤϥƥ³
.BR MSGMNB 
ꤵ롣
.PP
å塼Ǥ¸ߤϥĤ졢
˲(destruction)ޡʤå롣
.SH ֤
硢֤ͤϥå塼̻()
Ǥ롣Ǥʤ
.B \-1
֤졢
.B errno
ˤΥ顼롣
.SH 顼
Ԥˤ
.B errno
˰ʲͤΤʤΤɤ줫ꤵ:
.TP 11
.B EACCES
.IR key 
˴Ϣå塼¸ߤ뤬
ƤӽФץˤϤΥ塼ФƤΥĤʤ
.TP
.B EEXIST
.B key
˴Ϣå塼¸ߤ
.I msgflg

.B IPC_CREAT

.BR IPC_EXCL
ꤵƤ롣
.TP
.B EIDRM
Υå塼˲(remove)ޡ롣
.TP
.B ENOENT
.I key
˴Ϣå塼¸ߤ
.I msgflg

.BR IPC_CREAT
ꤵƤʤ
.TP
.B ENOMEM
å塼ʤФʤʤǡ¤ΤΤ
ʬʥ꤬¸ߤʤ
.TP
.B ENOSPC
å塼ʤФʤʤå塼κ
ƥ³
.RB ( MSGMNI )
ĶƤ롣
.SH 
.B IPC_PRIVATE
ϥե饰եɤǤϤʤ
.B key_t
Ǥ롣
üͤ
.IR key 
˻ꤵȡƥࡦ
.I msgflg
β 9 ӥåȰʳƤ̵뤷()
å塼롣
.PP
.B msgget
ƥࡦ˱ƶå塼λ񸻤Υƥ³ˤ
ʲΤΤ:
.TP 11
.B MSGMNI
ƥΤΥå塼κ: ˰¸
.SH Х
.B IPC_PRIVATE
λѤ¾ץʬ줿å塼˥뤳Ȥ
˸ʤ
.PP
եƱͤˡߤΤȤå塼ؤ¾Ūʥ
ݾڤͭˡ¸ߤʤ
.I msgflg

.B IPC_CREAT

.B IPC_EXCL
ξꤹ뤳Ȥϡ()å塼
뤳ȤΤߤݾڤΥå塼ؤ¾Ūʥ
̣ʤ
.SH 
SVr4, SVID.  SVr4  EIDRM 顼ˤĤƵҤƤʤ
.SH Ϣ
.BR ftok (3),
.BR ipc (5),
.BR msgctl (2),
.BR msgsnd (2),
.BR msgrcv (2)