/* Copyright (C) 1995-1999, 2000 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ #ifndef _SYS_IPC_H # error "Never use <bits/ipc.h> directly; include <sys/ipc.h> instead." #endif #include <bits/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. */ #ifdef __USE_GNU # define IPC_INFO 3 /* See ipcs. */ #endif /* Type of a SYSV IPC key. */ typedef int __kernel_key_t; /* Special key values. */ #define IPC_PRIVATE ((__key_t) 0) /* Private key. */ /* Data structure used to pass permission information to IPC operations. */ struct ipc_perm { __kernel_key_t __key; __kernel_uid_t uid; __kernel_gid_t gid; __kernel_uid_t cuid; __kernel_gid_t cgid; __kernel_mode_t mode; unsigned short __seq; };