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Diffstat (limited to 'sysdeps/unix/sysv/linux/bits/ipc.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/bits/ipc.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/bits/ipc.h b/sysdeps/unix/sysv/linux/bits/ipc.h new file mode 100644 index 0000000000..f5fea0d295 --- /dev/null +++ b/sysdeps/unix/sysv/linux/bits/ipc.h @@ -0,0 +1,85 @@ +/* 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_IPC_BUF_H + +#define _SYS_IPC_BUF_H 1 +#include <features.h> + +#include <sys/types.h> + +/* Mode bits for `msgget', `semget', and `shmget'. */ +#define IPC_CREAT 01000 /* Create key if key does not exist. */ +#define IPC_EXCL 02000 /* Fail if key exists. */ +#define IPC_NOWAIT 04000 /* Return error on wait. */ + +/* Control commands for `msgctl', `semctl', and `shmctl'. */ +#define IPC_RMID 0 /* Remove identifier. */ +#define IPC_SET 1 /* Set `ipc_perm' options. */ +#define IPC_STAT 2 /* Get `ipc_perm' options. */ +#define IPC_INFO 3 /* See ipcs. */ + + +__BEGIN_DECLS + +/* Special key values. */ +#define IPC_PRIVATE ((__key_t) 0) /* Private key. */ + + +/* Data structure used to pass permission information to IPC operations. */ +struct ipc_perm + { + __key_t __key; /* Key. */ + unsigned short int uid; /* Owner's user ID. */ + unsigned short int gid; /* Owner's group ID. */ + unsigned short int cuid; /* Creator's user ID. */ + unsigned short int cgid; /* Creator's group ID. */ + unsigned short int mode; /* Read/write permission. */ + unsigned short int __seq; /* Sequence number. */ + }; + + +/* Kludge to work around Linux' restriction of only up to five + arguments to a system call. */ +struct ipc_kludge + { + void *msgp; + long int msgtyp; + }; + +/* The actual system call: all functions are multiplexed by this. */ +extern int __ipc __P ((int __call, int __first, int __second, int __third, + void *__ptr)); + +/* The codes for the functions to use the multiplexer `__ipc'. */ +#define IPCOP_semop 1 +#define IPCOP_semget 2 +#define IPCOP_semctl 3 +#define IPCOP_msgsnd 11 +#define IPCOP_msgrcv 12 +#define IPCOP_msgget 13 +#define IPCOP_msgctl 14 +#define IPCOP_shmat 21 +#define IPCOP_shmdt 22 +#define IPCOP_shmget 23 +#define IPCOP_shmctl 24 + +__END_DECLS + +#endif /* _SYS_IPC_BUF_H */ |