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

/*
 * Copyright (c) 2000-2004 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) 1995, 1997 Apple Computer, Inc. All Rights Reserved */
/*
 * Copyright (c) 1989, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * 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.
 *
 *	@(#)ucred.h	8.4 (Berkeley) 1/9/95
 */

#ifndef _SYS_UCRED_H_
#define	_SYS_UCRED_H_

#include <sys/appleapiopts.h>
#include <sys/cdefs.h>
#include <sys/param.h>
#include <bsm/audit.h>

#ifdef __APPLE_API_UNSTABLE

/*
 * In-kernel credential structure.
 *
 * Note that this structure should not be used outside the kernel, nor should
 * it or copies of it be exported outside.  
 */
struct ucred {
	TAILQ_ENTRY(ucred)	cr_link; /* never modify this without KAUTH_CRED_HASH_LOCK */
	u_long	cr_ref;			/* reference count */
	
	/* credential hash depends on everything from this point on (see kauth_cred_get_hashkey) */
	uid_t	cr_uid;			/* effective user id */
	uid_t	cr_ruid;		/* real user id */
	uid_t	cr_svuid;		/* saved user id */
	short	cr_ngroups;		/* number of groups in advisory list */
	gid_t	cr_groups[NGROUPS];	/* advisory group list */
	gid_t	cr_rgid;		/* real group id */
	gid_t	cr_svgid;		/* saved group id */
	uid_t	cr_gmuid;		/* user id for group membership purposes */
	struct auditinfo cr_au;		/* user auditing data */
};
typedef struct ucred *kauth_cred_t;

/*
 * This is the external representation of struct ucred.
 */
struct xucred {
        u_int   cr_version;             /* structure layout version */
        uid_t   cr_uid;                 /* effective user id */
        short   cr_ngroups;             /* number of advisory groups */
        gid_t   cr_groups[NGROUPS];     /* advisory group list */
};
#define XUCRED_VERSION  0

#define cr_gid cr_groups[0]
#define NOCRED ((kauth_cred_t )0)	/* no credential available */
#define FSCRED ((kauth_cred_t )-1)	/* filesystem credential */

#define IS_VALID_CRED(_cr)	((_cr) != NOCRED && (_cr) != FSCRED)

#ifdef KERNEL
#ifdef __APPLE_API_OBSOLETE
__BEGIN_DECLS
int		crcmp(kauth_cred_t cr1, kauth_cred_t cr2);
int		suser(kauth_cred_t cred, u_short *acflag);
int		set_security_token(struct proc * p);
void		cru2x(kauth_cred_t cr, struct xucred *xcr);
__END_DECLS
#endif /* __APPLE_API_OBSOLETE */
#endif /* KERNEL */
#endif /* __APPLE_API_UNSTABLE */

#endif /* !_SYS_UCRED_H_ */
Commit	Line	Data
1c79356b	1	/*
5d5c5d0d A	2	* Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
5d5c5d0d A	3	*
8f6c56a5	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b	5	*
8f6c56a5 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.
	14	*
	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
	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
8ad349bb	24	* limitations under the License.
8f6c56a5 A	25	*
8f6c56a5 A	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b A	27	*/
	28	/* Copyright (c) 1995, 1997 Apple Computer, Inc. All Rights Reserved */
	29	/*
	30	* Copyright (c) 1989, 1993
	31	* The Regents of the University of California. All rights reserved.
	32	*
	33	* Redistribution and use in source and binary forms, with or without
	34	* modification, are permitted provided that the following conditions
	35	* are met:
	36	* 1. Redistributions of source code must retain the above copyright
	37	* notice, this list of conditions and the following disclaimer.
	38	* 2. Redistributions in binary form must reproduce the above copyright
	39	* notice, this list of conditions and the following disclaimer in the
	40	* documentation and/or other materials provided with the distribution.
	41	* 3. All advertising materials mentioning features or use of this software
	42	* must display the following acknowledgement:
	43	* This product includes software developed by the University of
	44	* California, Berkeley and its contributors.
	45	* 4. Neither the name of the University nor the names of its contributors
	46	* may be used to endorse or promote products derived from this software
	47	* without specific prior written permission.
	48	*
	49	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	50	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	51	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	52	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	53	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	54	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	55	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	56	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	57	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	58	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	59	* SUCH DAMAGE.
	60	*
	61	* @(#)ucred.h 8.4 (Berkeley) 1/9/95
	62	*/
	63
	64	#ifndef _SYS_UCRED_H_
	65	#define _SYS_UCRED_H_
	66
9bccf70c	67	#include <sys/appleapiopts.h>
91447636	68	#include <sys/cdefs.h>
1c79356b	69	#include <sys/param.h>
91447636	70	#include <bsm/audit.h>
1c79356b	71
9bccf70c	72	#ifdef __APPLE_API_UNSTABLE
91447636	73
1c79356b	74	/*
91447636 A	75	* In-kernel credential structure.
	76	*
	77	* Note that this structure should not be used outside the kernel, nor should
	78	* it or copies of it be exported outside.
1c79356b A	79	*/
1c79356b A	80	struct ucred {
91447636	81	TAILQ_ENTRY(ucred) cr_link; /* never modify this without KAUTH_CRED_HASH_LOCK */
1c79356b	82	u_long cr_ref; /* reference count */
91447636 A	83
91447636 A	84	/* credential hash depends on everything from this point on (see kauth_cred_get_hashkey) */
1c79356b	85	uid_t cr_uid; /* effective user id */
91447636 A	86	uid_t cr_ruid; /* real user id */
	87	uid_t cr_svuid; /* saved user id */
	88	short cr_ngroups; /* number of groups in advisory list */
	89	gid_t cr_groups[NGROUPS]; /* advisory group list */
	90	gid_t cr_rgid; /* real group id */
	91	gid_t cr_svgid; /* saved group id */
	92	uid_t cr_gmuid; /* user id for group membership purposes */
	93	struct auditinfo cr_au; /* user auditing data */
1c79356b	94	};
91447636 A	95	typedef struct ucred *kauth_cred_t;
91447636 A	96
55e303ae A	97	/*
	98	* This is the external representation of struct ucred.
	99	*/
	100	struct xucred {
	101	u_int cr_version; /* structure layout version */
	102	uid_t cr_uid; /* effective user id */
91447636 A	103	short cr_ngroups; /* number of advisory groups */
91447636 A	104	gid_t cr_groups[NGROUPS]; /* advisory group list */
55e303ae A	105	};
	106	#define XUCRED_VERSION 0
	107
1c79356b	108	#define cr_gid cr_groups[0]
91447636 A	109	#define NOCRED ((kauth_cred_t )0) /* no credential available */
91447636 A	110	#define FSCRED ((kauth_cred_t )-1) /* filesystem credential */
1c79356b	111
4452a7af A	112	#define IS_VALID_CRED(_cr) ((_cr) != NOCRED && (_cr) != FSCRED)
4452a7af A	113
1c79356b	114	#ifdef KERNEL
91447636 A	115	#ifdef __APPLE_API_OBSOLETE
	116	__BEGIN_DECLS
	117	int crcmp(kauth_cred_t cr1, kauth_cred_t cr2);
	118	int suser(kauth_cred_t cred, u_short *acflag);
	119	int set_security_token(struct proc * p);
	120	void cru2x(kauth_cred_t cr, struct xucred *xcr);
	121	__END_DECLS
	122	#endif /* __APPLE_API_OBSOLETE */
1c79356b	123	#endif /* KERNEL */
9bccf70c	124	#endif /* __APPLE_API_UNSTABLE */
1c79356b A	125
1c79356b A	126	#endif /* !_SYS_UCRED_H_ */