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
40 #include <sys/mutex.h>
45 * Please do not inspect cr_uid directly to determine superuserness.
46 * Only the suser()/suser_xxx() function should be used for this.
49 u_int cr_ref; /* reference count */
50 uid_t cr_uid; /* effective user id */
51 short cr_ngroups; /* number of groups */
52 gid_t cr_groups[NGROUPS]; /* groups */
53 struct uidinfo *cr_uidinfo; /* per uid resource consumption */
54 struct prison *cr_prison; /* jail(4) */
55 struct mtx cr_mtx; /* protect refcount */
57 #define cr_gid cr_groups[0]
58 #define NOCRED ((struct ucred *)0) /* no credential available */
59 #define FSCRED ((struct ucred *)-1) /* filesystem credential */
62 * This is the external representation of struct ucred, based upon the
63 * size of a 4.2-RELEASE struct ucred. There will probably never be
64 * any need to change the size of this or layout of its used fields.
67 u_short _cr_unused0; /* compatibility with old ucred */
68 uid_t cr_uid; /* effective user id */
69 short cr_ngroups; /* number of groups */
70 gid_t cr_groups[NGROUPS]; /* groups */
71 void *_cr_unused1; /* compatibility with old ucred */
78 void change_euid __P((struct proc *p, uid_t euid));
79 void change_ruid __P((struct proc *p, uid_t ruid));
80 struct ucred *crcopy __P((struct ucred *cr));
81 struct ucred *crdup __P((struct ucred *cr));
82 void crfree __P((struct ucred *cr));
83 struct ucred *crget __P((void));
84 void crhold __P((struct ucred *cr));
85 int groupmember __P((gid_t gid, struct ucred *cred));
88 #endif /* !_SYS_UCRED_H_ */