[apple/xnu.git] / bsd / sys / ipc.h

/*
 * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */
/*
 * Copyright (c) 1988 University of Utah.
 * Copyright (c) 1990, 1993
 *	The Regents of the University of California.  All rights reserved.
 * (c) UNIX System Laboratories, Inc.
 * All or some portions of this file are derived from material licensed
 * to the University of California by American Telephone and Telegraph
 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
 * the permission of UNIX System Laboratories, Inc.
 *
 * This code is derived from software contributed to Berkeley by
 * the Systems Programming Group of the University of Utah Computer
 * Science Department.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)ipc.h	8.4 (Berkeley) 2/19/95
 */

/*
 * SVID compatible ipc.h file
 */
#ifndef _SYS_IPC_H_
#define _SYS_IPC_H_

#include <sys/appleapiopts.h>
#include <sys/cdefs.h>

#include <sys/_types.h>

/*
 * [XSI] The uid_t, gid_t, mode_t, and key_t types SHALL be defined as
 * described in <sys/types.h>.
 */
#include <sys/_types/_uid_t.h>
#include <sys/_types/_gid_t.h>
#include <sys/_types/_mode_t.h>
#include <sys/_types/_key_t.h>


#pragma pack(4)

/*
 * Technically, we should force all code references to the new structure
 * definition, not in just the standards conformance case, and leave the
 * legacy interface there for binary compatibility only.  Currently, we
 * are only forcing this for programs requesting standards conformance.
 */
#if __DARWIN_UNIX03 || defined(KERNEL)
/*
 * [XSI] Information used in determining permission to perform an IPC
 * operation
 */
struct ipc_perm
{
	uid_t		uid;		/* [XSI] Owner's user ID */
	gid_t		gid;		/* [XSI] Owner's group ID */
	uid_t		cuid;		/* [XSI] Creator's user ID */
	gid_t		cgid;		/* [XSI] Creator's group ID */
	mode_t		mode;		/* [XSI] Read/write permission */
	unsigned short	_seq;		/* Reserved for internal use */
	key_t		_key;		/* Reserved for internal use */
};
#define	__ipc_perm_new	ipc_perm
#else	/* !__DARWIN_UNIX03 */
#define	ipc_perm	__ipc_perm_old
#endif	/* !__DARWIN_UNIX03 */

#if !__DARWIN_UNIX03
/*
 * Legacy structure; this structure is maintained for binary backward
 * compatability with previous versions of the interface.  New code
 * should not use this interface, since ID values may be truncated.
 */
struct __ipc_perm_old {
	__uint16_t	cuid;		/* Creator's user ID */
	__uint16_t	cgid;		/* Creator's group ID */
	__uint16_t	uid;		/* Owner's user ID */
	__uint16_t	gid;		/* Owner's group ID */
	mode_t		mode;		/* Read/Write permission */
	__uint16_t	seq;		/* Reserved for internal use */
	key_t		key;		/* Reserved for internal use */
};
#endif	/* !__DARWIN_UNIX03 */

#pragma pack()

/*
 * [XSI] Definitions shall be provided for the following constants:
 */

/* Mode bits */
#define	IPC_CREAT	001000		/* Create entry if key does not exist */
#define	IPC_EXCL	002000		/* Fail if key exists */
#define	IPC_NOWAIT	004000		/* Error if request must wait */

/* Keys */
#define	IPC_PRIVATE	((key_t)0)	/* Private key */

/* Control commands */
#define	IPC_RMID	0		/* Remove identifier */
#define	IPC_SET		1		/* Set options */
#define	IPC_STAT	2		/* Get options */


#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)

/* common mode bits */
#define	IPC_R		000400		/* Read permission */
#define	IPC_W		000200		/* Write/alter permission */
#define	IPC_M		010000		/* Modify control info permission */

#endif	/* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */


#ifdef BSD_KERNEL_PRIVATE
/*
 * Kernel implementation details which should not be utilized by user
 * space programs.
 */

/* Macros to convert between ipc ids and array indices or sequence ids */
#define	IPCID_TO_IX(id)		((id) & 0xffff)
#define	IPCID_TO_SEQ(id)	(((id) >> 16) & 0xffff)
#define	IXSEQ_TO_IPCID(ix,perm)	(((perm._seq) << 16L) | ((ix) & 0xffff))

struct ucred;

int	ipcperm(struct ucred *, struct ipc_perm *, int);
#endif /* BSD_KERNEL_PRIVATE */

#ifndef KERNEL

__BEGIN_DECLS
/* [XSI] */
key_t	ftok(const char *, int);
__END_DECLS

#endif	/* !KERNEL */

#endif /* !_SYS_IPC_H_ */
Commit	Line	Data
1c79356b	1	/*
5d5c5d0d A	2	* Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
5d5c5d0d A	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b	5	*
2d21ac55 A	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
8f6c56a5	14	*
2d21ac55 A	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5 A	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55 A	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
8f6c56a5	25	*
2d21ac55	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b A	27	*/
	28	/*
	29	* Copyright (c) 1988 University of Utah.
	30	* Copyright (c) 1990, 1993
	31	* The Regents of the University of California. All rights reserved.
	32	* (c) UNIX System Laboratories, Inc.
	33	* All or some portions of this file are derived from material licensed
	34	* to the University of California by American Telephone and Telegraph
	35	* Co. or Unix System Laboratories, Inc. and are reproduced herein with
	36	* the permission of UNIX System Laboratories, Inc.
	37	*
	38	* This code is derived from software contributed to Berkeley by
	39	* the Systems Programming Group of the University of Utah Computer
	40	* Science Department.
	41	*
	42	* Redistribution and use in source and binary forms, with or without
	43	* modification, are permitted provided that the following conditions
	44	* are met:
	45	* 1. Redistributions of source code must retain the above copyright
	46	* notice, this list of conditions and the following disclaimer.
	47	* 2. Redistributions in binary form must reproduce the above copyright
	48	* notice, this list of conditions and the following disclaimer in the
	49	* documentation and/or other materials provided with the distribution.
	50	* 3. All advertising materials mentioning features or use of this software
	51	* must display the following acknowledgement:
	52	* This product includes software developed by the University of
	53	* California, Berkeley and its contributors.
	54	* 4. Neither the name of the University nor the names of its contributors
	55	* may be used to endorse or promote products derived from this software
	56	* without specific prior written permission.
	57	*
	58	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	59	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	60	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	61	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	62	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	63	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	64	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	65	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	66	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	67	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	68	* SUCH DAMAGE.
	69	*
	70	* @(#)ipc.h 8.4 (Berkeley) 2/19/95
	71	*/
	72
	73	/*
	74	* SVID compatible ipc.h file
	75	*/
	76	#ifndef _SYS_IPC_H_
	77	#define _SYS_IPC_H_
	78
91447636 A	79	#include <sys/appleapiopts.h>
	80	#include <sys/cdefs.h>
	81
	82	#include <sys/_types.h>
	83
	84	/*
	85	* [XSI] The uid_t, gid_t, mode_t, and key_t types SHALL be defined as
	86	* described in <sys/types.h>.
	87	*/
39236c6e A	88	#include <sys/_types/_uid_t.h>
	89	#include <sys/_types/_gid_t.h>
	90	#include <sys/_types/_mode_t.h>
	91	#include <sys/_types/_key_t.h>
91447636	92
91447636	93
b0d623f7 A	94	#pragma pack(4)
b0d623f7 A	95
91447636 A	96	/*
	97	* Technically, we should force all code references to the new structure
	98	* definition, not in just the standards conformance case, and leave the
	99	* legacy interface there for binary compatibility only. Currently, we
	100	* are only forcing this for programs requesting standards conformance.
	101	*/
2d21ac55	102	#if __DARWIN_UNIX03 \|\| defined(KERNEL)
91447636 A	103	/*
	104	* [XSI] Information used in determining permission to perform an IPC
	105	* operation
	106	*/
2d21ac55 A	107	struct ipc_perm
2d21ac55 A	108	{
91447636 A	109	uid_t uid; /* [XSI] Owner's user ID */
	110	gid_t gid; /* [XSI] Owner's group ID */
	111	uid_t cuid; /* [XSI] Creator's user ID */
	112	gid_t cgid; /* [XSI] Creator's group ID */
	113	mode_t mode; /* [XSI] Read/write permission */
	114	unsigned short _seq; /* Reserved for internal use */
	115	key_t _key; /* Reserved for internal use */
1c79356b	116	};
2d21ac55 A	117	#define __ipc_perm_new ipc_perm
2d21ac55 A	118	#else /* !__DARWIN_UNIX03 */
91447636	119	#define ipc_perm __ipc_perm_old
2d21ac55	120	#endif /* !__DARWIN_UNIX03 */
1c79356b	121
2d21ac55	122	#if !__DARWIN_UNIX03
91447636 A	123	/*
	124	* Legacy structure; this structure is maintained for binary backward
	125	* compatability with previous versions of the interface. New code
	126	* should not use this interface, since ID values may be truncated.
	127	*/
	128	struct __ipc_perm_old {
	129	__uint16_t cuid; /* Creator's user ID */
	130	__uint16_t cgid; /* Creator's group ID */
	131	__uint16_t uid; /* Owner's user ID */
	132	__uint16_t gid; /* Owner's group ID */
	133	mode_t mode; /* Read/Write permission */
	134	__uint16_t seq; /* Reserved for internal use */
	135	key_t key; /* Reserved for internal use */
	136	};
2d21ac55	137	#endif /* !__DARWIN_UNIX03 */
91447636	138
b0d623f7 A	139	#pragma pack()
b0d623f7 A	140
91447636 A	141	/*
	142	* [XSI] Definitions shall be provided for the following constants:
	143	*/
	144
	145	/* Mode bits */
	146	#define IPC_CREAT 001000 /* Create entry if key does not exist */
	147	#define IPC_EXCL 002000 /* Fail if key exists */
	148	#define IPC_NOWAIT 004000 /* Error if request must wait */
1c79356b	149
91447636 A	150	/* Keys */
91447636 A	151	#define IPC_PRIVATE ((key_t)0) /* Private key */
1c79356b	152
91447636 A	153	/* Control commands */
	154	#define IPC_RMID 0 /* Remove identifier */
	155	#define IPC_SET 1 /* Set options */
	156	#define IPC_STAT 2 /* Get options */
1c79356b	157
1c79356b	158
2d21ac55	159	#if !defined(_POSIX_C_SOURCE) \|\| defined(_DARWIN_C_SOURCE)
91447636 A	160
	161	/* common mode bits */
	162	#define IPC_R 000400 /* Read permission */
	163	#define IPC_W 000200 /* Write/alter permission */
	164	#define IPC_M 010000 /* Modify control info permission */
	165
2d21ac55	166	#endif /* (!_POSIX_C_SOURCE \|\| _DARWIN_C_SOURCE) */
91447636 A	167
	168
	169	#ifdef BSD_KERNEL_PRIVATE
	170	/*
	171	* Kernel implementation details which should not be utilized by user
	172	* space programs.
	173	*/
9bccf70c	174
1c79356b A	175	/* Macros to convert between ipc ids and array indices or sequence ids */
	176	#define IPCID_TO_IX(id) ((id) & 0xffff)
	177	#define IPCID_TO_SEQ(id) (((id) >> 16) & 0xffff)
b0d623f7	178	#define IXSEQ_TO_IPCID(ix,perm) (((perm._seq) << 16L) \| ((ix) & 0xffff))
1c79356b A	179
	180	struct ucred;
	181
91447636 A	182	int ipcperm(struct ucred , struct ipc_perm , int);
91447636 A	183	#endif /* BSD_KERNEL_PRIVATE */
1c79356b	184
91447636	185	#ifndef KERNEL
1c79356b A	186
1c79356b A	187	__BEGIN_DECLS
91447636 A	188	/* [XSI] */
91447636 A	189	key_t ftok(const char *, int);
1c79356b A	190	__END_DECLS
1c79356b A	191
91447636	192	#endif /* !KERNEL */
1c79356b A	193
1c79356b A	194	#endif /* !_SYS_IPC_H_ */