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Diffstat (limited to 'sysvipc/sys/msg.h')
-rw-r--r-- | sysvipc/sys/msg.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/sysvipc/sys/msg.h b/sysvipc/sys/msg.h new file mode 100644 index 0000000000..22df1eca95 --- /dev/null +++ b/sysvipc/sys/msg.h @@ -0,0 +1,61 @@ +/* Copyright (C) 1995 Free Software Foundation, Inc. +This file is part of the GNU C Library. +Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + +#ifndef _SYS_MSG_H +#define _SYS_MSG_H + +#include <features.h> +#include <sys/types.h> + +/* Get common definition of System V style IPC. */ +#include <sys/ipc.h> + +/* Get system dependent definition of `struct msqid_ds' and more. */ +#include <sys/msq_buf.h> + +__BEGIN_DECLS + +/* The following System V style IPC functions implement a message queue + system. The definition is found in XPG2. */ + +/* Template for struct to be used as argument for `msgsnd' and `msgrcv'. */ +struct msgbuf +{ + long mtype; /* type of received/sent message */ + char mtext[1]; /* text of the message */ +}; + + +/* Message queue control operation. */ +extern int msgctl __P ((int __msqid, int __cmd, struct msqid_ds *__buf)); + +/* Get messages queue. */ +extern int msgget __P ((key_t __key, int __msgflg)); + +/* Receive message from message queue. */ +extern int msgrcv __P ((int __msqid, void *__msgp, size_t __msgsz, + long __msgtyp, int __msgflg)); + +/* Send message to message queue. */ +extern int msgsnd __P ((int __msqid, void *__msgp, size_t __msgsz, + int __msgflg)); + +__END_DECLS + +#endif /* sys/msg.h */ |