diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/bits/msq.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/bits/msq.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/bits/msq.h b/sysdeps/unix/sysv/linux/bits/msq.h new file mode 100644 index 0000000000..0abc10f6e5 --- /dev/null +++ b/sysdeps/unix/sysv/linux/bits/msq.h @@ -0,0 +1,78 @@ +/* Copyright (C) 1995, 1996, 1997 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_MSQ_BUF_H + +#define _SYS_MSQ_BUF_H 1 +#include <features.h> + +#include <sys/types.h> + +/* Define options for message queue functions. */ +#define MSG_NOERROR 010000 /* no error if message is too big */ +#define MSG_EXCEPT 020000 /* recv any msg except of specified type */ + + +__BEGIN_DECLS + +/* Structure of record for one message inside the kernel. + The type `struct __msg' is opaque. */ +struct msqid_ds +{ + struct ipc_perm msg_perm; /* structure describing operation permission */ + struct msg *__msg_first; /* pointer to first message on queue */ + struct msg *__msg_last; /* pointer to last message on queue */ + __time_t msg_stime; /* time of last msgsnd command */ + __time_t msg_rtime; /* time of last msgrcv command */ + __time_t msg_ctime; /* time of last change */ + struct wait_queue *__wwait; /* ??? */ + struct wait_queue *__rwait; /* ??? */ + unsigned short int __msg_cbytes;/* current number of bytes on queue */ + unsigned short int msg_qnum; /* number of messages currently on queue */ + unsigned short int msg_qbytes;/* max number of bytes allowed on queue */ + int msg_lspid; /* pid of last msgsnd() */ + int msg_lrpid; /* pid of last msgrcv() */ +}; + +#ifdef __USE_MISC + +#define msg_cbytes __msg_cbytes + +/* ipcs ctl commands */ +#define MSG_STAT 11 +#define MSG_INFO 12 + +/* buffer for msgctl calls IPC_INFO, MSG_INFO */ +struct msginfo +{ + int msgpool; + int msgmap; + int msgmax; + int msgmnb; + int msgmni; + int msgssz; + int msgtql; + ushort msgseg; +}; + +#endif /* __USE_MISC */ + +__END_DECLS + +#endif /* _SYS_MSQ_BUF_H */ |