.\" %NetBSD: msgctl.2,v 1.1 1995/10/16 23:49:15 jtc Exp % .\" .\" Copyright (c) 1995 Frank van der Linden .\" All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" 3. All advertising materials mentioning features or use of this software .\" must display the following acknowledgement: .\" This product includes software developed for the NetBSD Project .\" by Frank van der Linden .\" 4. The name of the author may not be used to endorse or promote products .\" derived from this software without specific prior written permission .\" .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR .\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES .\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. .\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, .\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT .\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, .\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY .\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. .\" .\" %Id: msgctl.3,v 1.5 1997/11/23 17:58:36 bde Exp % .\"/ .Dd November 24, 1997 .Dt MSGCTL 3 .Os FreeBSD .Sh ̾�� .Nm msgctl .Nd ��å��������楪�ڥ졼����� .Sh �� .Fd #include <sys/types.h> .Fd #include <sys/ipc.h> .Fd #include <sys/msg.h> .Ft int .Fn msgctl "int msqid" "int cmd" "struct msqid_ds *buf" .Sh ���� .Fn msgctl �����ƥॳ����ϡ� .Fa msqid �����ꤹ���å��������塼���Ф������楪�ڥ졼������¹Ԥ��ޤ��� �ƥ�å��������塼�ˤϡ�����˴�Ϣ�����ǡ�����¤�Τ�����ޤ��� ���ΰ����� .Fn msgctl ���ѹ��Ǥ��ޤ��� .Fn msgctl �Υ������������ǡ�����¤�⤢��ޤ������Υǡ�����¤�Τ� .Aq Pa sys/msg.h ��������졢�ʲ��Τ褦�ʥ��Ф��ޤޤ�Ƥ��ޤ� (����¾�Υ��Ф� ����ޤ�)�� .Bd -literal struct msqid_ds { struct ipc_perm msg_perm; /* ��å��������塼�Υѡ��ߥå����ӥå� */ struct msg *msg_first; /* ���塼�κǽ�Υ�å����� */ struct msg *msg_last; /* ���塼�κǸ�Υ�å����� */ u_long msg_cbytes; /* ���塼�ǻ��Ѥ��Ƥ���Х��ȿ� */ u_long msg_qnum; /* ���塼�ǻ��Ѥ��Ƥ����å������� */ u_long msg_qbytes; /* ���塼�ǻ��Ѥ������Х��ȿ� */ pid_t msg_lspid; /* �Ǹ�� msgsnd �Υץ�����ID */ pid_t msg_lrpid; /* �Ǹ�� msgrcv �Υץ�����ID */ time_t msg_stime; /* �Ǹ�� msgsnd �λ��� */ long msg_pad1; time_t msg_rtime; /* �Ǹ�� msgrcv �λ��� */ long msg_pad2; time_t msg_ctime; /* �Ǹ�� msgctl �λ��� */ long msg_pad3; long msg_pad4[4]; }; .Ed .Pp .Bf -literal shmid_ds .Ef ��¤�Τ���ǻ��Ѥ���� .Bf -literal ipc_perm .Ef ��¤�Τϡ� .Aq Pa sys/ipc.h �ǰʲ��Τ褦���������Ƥ��ޤ��� .Bd -literal struct ipc_perm { ushort cuid; /* �����ԤΥ桼��ID */ ushort cgid; /* �����ԤΥ��롼��ID */ ushort uid; /* �桼��ID */ ushort gid; /* ���롼��ID */ ushort mode; /* r/w �ѡ��ߥå���� */ ushort seq; /* ���������ֹ� (��դ��������줿 msg/sem/shm ID) */ key_t key; /* �桼�������ꤷ�� msg/sem/shm ���� */ }; .Ed .Pp .Fn msgctl ���¹Ԥ��륪�ڥ졼�����ϡ��ʲ��Τ����� 1 �Ĥ� .Fa cmd �ǻ��ꤵ��ޤ��� .Bl -tag -width IPC_RMIDX .It Dv IPC_STAT ��å��������塼�ξ���ᡢ .Fa buf ���ؤ���¤�Τ����֤��ޤ��� .It Dv IPC_SET .Fa msqid �˴�Ϣ���빽¤�Τ� .Va msg_perm.uid �ե�����ɡ� .Va msg_perm.gid �ե�����ɡ� .Va msg_perm.mode �ե�����ɡ� .Va msg_qbytes �ե�����ɤ��ͤ����ꤷ�ޤ��������ͤϡ� .Fa buf ���ؤ���¤�Τ��б�����ե�����ɤ������ޤ������Υ��ڥ졼������ �¹ԤǤ���Τϡ������ѥ桼�����ޤ��ϥ�å��������塼�˴�Ϣ���� �ǡ�����¤�Τ� .Va msg_perm.cuid �� .Va msg_perm.uid ���������¸��桼�� ID ����ĥץ������ΤߤǤ��� .Va msg_qbytes ���ͤ����䤻��Τϡ������ѥ桼���ΤߤǤ��������ƥ����� ( .Aq Pa sys/msg.h �� MSGMNB) ��ۤ��� .Va msg_qbytes ���ͤϡ��������¤��ڤ�ΤƤ��ޤ��� .It Dv IPC_RMID .Fa msqid �����ꤹ���å��������塼�������� .Fa msqid �˴�Ϣ���� �ǡ������˲����ޤ��������ѥ桼�����ޤ��ϡ����塼�� ��Ϣ����ǡ�����¤�Τ� .Va msg_perm.cuid �ޤ��� .Va msg_perm.uid ���ͤ����¸��桼�� ID ���������ץ������Τߤ��������¹ԤǤ��ޤ��� .El ��å��������塼������ɹ��߸�����å��������塼�ؤν���߸� ( .Xr msgsnd 3 �� .Xr msgrcv 3 ����) �ϡ��ե������Ʊ���褦�� ( .Xr chmod 2 ����)�� .Va msg_perm.mode �ե�����ɤˤ�äƷ�ޤ�ޤ����¸��桼�� ID �ϡ� .Va msg_perm.cuid �ե�����ɤ� .Va msg_perm.uid �ե�����ɤȰ��פ����¸����롼�� ID �ϡ� .Va msg_perm.cgid �� .Va msg_perm.gid �Ȱ��פ��ޤ��� .Sh ����� ����ʤ���λ����� 0 ���ᤵ��ޤ�������ʤ���λ���ʤ��� -1 ���ᤵ�졢 �������Х��ѿ� .Va errno �����Υ��顼���褦�����ꤵ��ޤ��� .Sh ���顼 .Fn msgctl �ϡ��ʲ��Τ褦�ʾ��˥��顼�Ȥʤ�ޤ��� .Bl -tag -width Er .It Bq Er EPERM .Fa cmd �� IPC_SET �� IPC_RMID �����������ƽФ�¦�������ѥ桼���ǤϤʤ���硣 �ޤ��ϼ¸��桼�� ID ����å��������塼�˴�Ϣ����ǡ�����¤�� .Va msg_perm.uid �ե�����ɤ� .Va msg_perm.cuid �ե�����ɤȰ��פ��ʤ���硣 IPC_SET ���Ѥ��� .Va msg_qbytes ���ͤ�夲�褦�Ȥ��������ƽФ�¦�������ѥ桼���Ǥʤ���硣 .It Bq Er EACCES ���ޥ�ɤ� IPC_STAT �Ǥ��뤬�����Υ�å��������塼�� �ɹ��߸����ƽФ�¦�ˤʤ���硣 .It Bq Er EINVAL .Fa msqid ����������å��������塼 ID �Ǥʤ���硣 .Va cmd �����������ޥ�ɤǤʤ���硣 .It Bq Er EFAULT .Fa buf �����������ɥ쥹����ꤷ�Ƥ��ʤ���硣 .El .Sh ��Ϣ���� .Xr msgget 3 , .Xr msgrcv 3 , .Xr msgsnd 3 .Sh ��� ��å��������塼�ϡ� AT&T Unix System V �κǽ�Υ������ɲä���ޤ����� .\"kuma 1999-11-12