[thirdparty/glibc.git] / sysdeps / generic / bits / ipc.h

/* Copyright (C) 1995, 1996, 1997, 1999 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 */

/* Special key values.  */
#define IPC_PRIVATE	((key_t) 0)	/* private key */


/* Data structure used to pass permission information to IPC operations.  */
struct ipc_perm
  {
    __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 */
  };
Commit	Line	Data
219aa9e9	1	/* Copyright (C) 1995, 1996, 1997, 1999 Free Software Foundation, Inc.
8a4b65b4	2	This file is part of the GNU C Library.
60478656	3
8a4b65b4	4	The GNU C Library is free software; you can redistribute it and/or
41bdb6e2 AJ	5	modify it under the terms of the GNU Lesser General Public
	6	License as published by the Free Software Foundation; either
	7	version 2.1 of the License, or (at your option) any later version.
60478656	8
8a4b65b4 UD	9	The GNU C Library is distributed in the hope that it will be useful,
	10	but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
41bdb6e2	12	Lesser General Public License for more details.
60478656	13
41bdb6e2 AJ	14	You should have received a copy of the GNU Lesser General Public
	15	License along with the GNU C Library; if not, write to the Free
	16	Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
	17	02111-1307 USA. */
60478656	18
f4017d20 UD	19	#ifndef _SYS_IPC_H
	20	# error "Never use <bits/ipc.h> directly; include <sys/ipc.h> instead."
	21	#endif
8a4b65b4	22
219aa9e9	23	#include <bits/types.h>
60478656 RM	24
	25	/* Mode bits for `msgget', `semget', and `shmget'. */
	26	#define IPC_CREAT 01000 /* create key if key does not exist */
	27	#define IPC_EXCL 02000 /* fail if key exists */
	28	#define IPC_NOWAIT 04000 /* return error on wait */
	29
	30	/* Control commands for `msgctl', `semctl', and `shmctl'. */
	31	#define IPC_RMID 0 /* remove identifier */
	32	#define IPC_SET 1 /* set `ipc_perm' options */
	33	#define IPC_STAT 2 /* get `ipc_perm' options */
	34
60478656 RM	35	/* Special key values. */
	36	#define IPC_PRIVATE ((key_t) 0) /* private key */
	37
	38
	39	/* Data structure used to pass permission information to IPC operations. */
	40	struct ipc_perm
f4017d20 UD	41	{
	42	__uid_t uid; /* owner's user ID */
	43	__gid_t gid; /* owner's group ID */
	44	__uid_t cuid; /* creator's user ID */
	45	__gid_t cgid; /* creator's group ID */
	46	__mode_t mode; /* read/write permission */
	47	};