diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/sys/ipc_buf.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/sys/ipc_buf.h | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/sys/ipc_buf.h b/sysdeps/unix/sysv/linux/sys/ipc_buf.h new file mode 100644 index 0000000000..767fc9ade9 --- /dev/null +++ b/sysdeps/unix/sysv/linux/sys/ipc_buf.h @@ -0,0 +1,84 @@ +/* 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_IPC_BUF_H +#define _SYS_IPC_BUF_H + +#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 */ + __uid_t uid; /* owner's user ID */ + __gid_t gid; /* owner's group ID */ + __uid_t cuid; /* creator's user ID */ + __gid_t cgid; /* creator's group ID */ + __mode_t 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 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 */ |