2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
33 * @(#)ucred.h 8.4 (Berkeley) 1/9/95
34 * $FreeBSD: src/sys/sys/ucred.h,v 1.14.2.5 2002/03/09 05:20:25 dd Exp $
43 * Please do not inspect cr_uid directly to determine superuserness.
44 * Only the suser()/suser_xxx() function should be used for this.
47 u_int cr_ref; /* reference count */
48 uid_t cr_uid; /* effective user id */
49 short cr_ngroups; /* number of groups */
50 gid_t cr_groups[NGROUPS]; /* groups */
51 struct uidinfo *cr_uidinfo; /* per uid resource consumption */
53 #define cr_gid cr_groups[0]
54 #define NOCRED ((struct ucred *)0) /* no credential available */
55 #define FSCRED ((struct ucred *)-1) /* filesystem credential */
58 * This is the external representation of struct ucred, based upon the
59 * size of a 4.2-RELEASE struct ucred. There will probably never be
60 * any need to change the size of this or layout of its used fields.
63 u_int cr_version; /* structure layout version */
64 uid_t cr_uid; /* effective user id */
65 short cr_ngroups; /* number of groups */
66 gid_t cr_groups[NGROUPS]; /* groups */
67 void *_cr_unused1; /* compatibility with old ucred */
69 #define XUCRED_VERSION 0
75 void change_euid __P((struct proc *p, uid_t euid));
76 void change_ruid __P((struct proc *p, uid_t ruid));
77 struct ucred *crcopy __P((struct ucred *cr));
78 struct ucred *crdup __P((struct ucred *cr));
79 void crfree __P((struct ucred *cr));
80 struct ucred *crget __P((void));
81 void crhold __P((struct ucred *cr));
82 void cru2x __P((struct ucred *cr, struct xucred *xcr));
83 int groupmember __P((gid_t gid, struct ucred *cred));
86 #endif /* !_SYS_UCRED_H_ */