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.\" 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.\" manual page may be incorrect or out-of-date.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.
.\"
.\" Modified Tue Oct 22 08:11:14 EDT 1996 by Eric S. Raymond <esr@thyrsus.com>
.\" Modified Sun Feb 18 01:59:29 2001 by Andries E. Brouwer <aeb@cwi.nl>
.\"
.\" Japanese Version Copyright (c) 1997 HANATAKA Shinya
.\" all rights reserved.
.\" Translated Sun Feb 23 16:49:10 JST 1997
.\" by HANATAKA Shinya <hanataka@abyss.rim.or.jp>
.\" Updated & Modified Mon Jun 4 01:13:06 JST 2001
.\" by Yuichi SATO <ysato@h4.dion.ne.jp>
.\"
.\"WORD: message å
.\"WORD: queue 塼
.\"WORD: member С
.\"WORD: structure ¤
.\"WORD: effective user-ID ¸桼ID
.\"WORD: creator
.\"WORD: owner ͭ
.\"
.TH MSGCTL 2 "18 Feb 2001" "Linux 2.4.1" "Linux Programmer's Manual"
.SH ̾
msgctl \- å
.SH
.nf
.B
#include <sys/types.h>
.B
#include <sys/ipc.h>
.B
#include <sys/msg.h>
.fi
.sp
.BI "int msgctl(int " msqid ,
.BI "int " cmd ,
.BI "struct msqid_ds *" buf );
.SH
δؿϥå塼̻
.I msqid
ǻꤵ줿å塼 (message queue) Ф
.I cmd
ǻꤵ줿Ԥʤ
.I cmd
˻Ȥͤ:
.TP 12
.B IPC_STAT
å塼ǡ¤Τ
.I buf
ǻꤵ줿¤Τ˥ǡԡ롣
桼ϥå塼Фɤ߹ߵĤäƤʤФʤʤ
.TP
.B IPC_SET
.I buf
ǻꤵ줿
.B msqid_ds
¤ΤΥСͤå塼ǡ¤Τ˽ߡ
.B msg_ctime
С롣
.I buf
ˤäƥ桼Ϳ
.B "msqid_ds ¤"
ΥСΤʲΤΤθ:
.nf
.sp
.ft B
msg_perm.uid
msg_perm.gid
msg_perm.mode \fR/* 9 ӥåȤΤ */\fP
msg_qbytes
.fi
.ft R
.sp
ƤӽФץμ¸ (effective) 桼 ID ϥѡ桼
å塼κ (creator)ͭ (owner)
줫ǤʤФʤʤ
ѡ桼Τߤ
.B msg_qbytes
ƥࡦѥ
.B MSGMNB
Ķꤹ뤳ȤǤ롣
.TP
.B IPC_RMID
å塼ȤΥǡ¤Τ˺롣
Ƥɤ߹ߤߤԤäƤץ
(顼Ȥʤ
.B errno
.BR EIDRM
ꤵơ)
Ƴ (awake) 롣
ƤӽФץμ¸桼 ID ϥѡ桼
å塼κ (creator)ͭ (owner)
줫ǤʤФʤʤ
.SH ֤
.BR 0
֤롣Ǥʤ
.B \-1
֤졢
.B errno
Υ顼褦ꤵ롣
.SH 顼
Ԥ֤줿
.B errno
˰ʲͤΤɤ줫Ĥꤵ:
.TP 11
.B EACCES
.I cmd
.B IPC_STAT
ƤӽФץå塼
.IR msqid
Фɤ߹ߵĤäƤʤ
.TP
.B EFAULT
.I cmd
.B IPC_SET
.B IPC_STAT
ǡ
.I buf
ǻؤƤ륢ɥ쥹ǽǤʤ
.TP
.B EIDRM
å塼줿
.TP
.B EINVAL
.I cmd
ޤ
.IR msqid
ͤꤵ줿
.TP
.B EPERM
.I cmd
.B IPC_SET
.B IPC_RMID
ǡƤӽФץμ¸桼 ID
Υޥɤ¹Ԥ븢ʤ
ϥѡ桼ʳΥץ
.B msg_qbytes
ƥࡦѥ
.B MSGMNB
ǻꤵ줿Ͱʾä褦Ȥˤȯ뤳Ȥդ뤳ȡ
.SH
.BR IPC_INFO ,
.BR MSG_STAT ,
.B MSG_INFO
楳
.BR ipcs (8)
ץǻγƾ뤿˻ѤƤ롣
Ūˤ proc ե롦ƥࡦեȤ褦
뤫⤷ʤ
.LP
\fI¤ msqid_ds\fP ¿Υեɤϡ
Linux 2.2 ǤûäLinux 2.4 ǤĹʤä
ˤϡglibc-2.1.91 ʹߤδĶ
ƥѥ뤹нʬǤ롣
ͥϿθƤӽФȸŤθƤӽФ
.I cmd
IPC_64 ե饰Ƕ̤롣
.SH
SVr4, SVID. SVID ˤ EIDRM 顼ˤĤƤεҤϤʤ
.SH Ϣ
.BR ipc (5),
.BR msgget (2),
.BR msgsnd (2),
.BR msgrcv (2)
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