ucred.h revision 8011 
1/*
2 * Copyright (c) 1989, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 *	@(#)ucred.h	8.2 (Berkeley) 1/4/94
34 * $Id: ucred.h,v 1.4 1994/10/08 22:23:00 phk Exp $
35 */
36
37#ifndef _SYS_UCRED_H_
38#define	_SYS_UCRED_H_
39
40/*
41 * Credentials.
42 */
43struct ucred {
44	u_short	cr_ref;			/* reference count */
45	uid_t	cr_uid;			/* effective user id */
46	short	cr_ngroups;		/* number of groups */
47	gid_t	cr_groups[NGROUPS];	/* groups */
48};
49#define cr_gid cr_groups[0]
50#define NOCRED ((struct ucred *)-1)	/* no credential available */
51#define FSCRED ((struct ucred *)-2)	/* filesystem credential */
52
53#ifdef KERNEL
54#define	crhold(cr)	(cr)->cr_ref++
55struct ucred *crget(void);
56struct ucred *crcopy(struct ucred *);
57struct ucred *crdup(struct ucred *);
58extern void crfree(struct ucred *);
59extern int suser(struct ucred *, u_short *);
60int	groupmember __P((gid_t, struct ucred *));
61
62#endif /* KERNEL */
63
64#endif /* !_SYS_UCRED_H_ */
65