1/* $OpenBSD: ucred.h,v 1.14 2022/03/17 14:23:34 visa Exp $ */
2/* $NetBSD: ucred.h,v 1.12 1995/06/01 22:44:50 jtc Exp $ */
3
4/*
5 * Copyright (c) 1989, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * @(#)ucred.h 8.2 (Berkeley) 1/4/94
33 */
34
35#ifndef _SYS_UCRED_H_
36#define _SYS_UCRED_H_
37
38#include <sys/refcnt.h>
39#include <sys/syslimits.h>
40
41/*
42 * Credentials.
43 */
44struct ucred {
45 struct refcnt cr_refcnt; /* reference count */
46
47/* The following fields are all copied by crset() */
48#define cr_startcopy cr_uid
49 uid_t cr_uid; /* effective user id */
50 uid_t cr_ruid; /* Real user id. */
51 uid_t cr_svuid; /* Saved effective user id. */
52 gid_t cr_gid; /* effective group id */
53 gid_t cr_rgid; /* Real group id. */
54 gid_t cr_svgid; /* Saved effective group id. */
55 short cr_ngroups; /* number of groups */
56 gid_t cr_groups[NGROUPS_MAX]; /* groups */
57};
58#define NOCRED ((struct ucred *)-1) /* no credential available */
59#define FSCRED ((struct ucred *)-2) /* filesystem credential */
60
61/*
62 * Userspace version, for use in syscalls arguments
63 */
64struct xucred {
65 uid_t cr_uid; /* user id */
66 gid_t cr_gid; /* group id */
67 short cr_ngroups; /* number of groups */
68 gid_t cr_groups[NGROUPS_MAX]; /* groups */
69};
70
71#ifdef _KERNEL
72
73int crfromxucred(struct ucred *, const struct xucred *);
74void crset(struct ucred *, const struct ucred *);
75struct ucred *crcopy(struct ucred *cr);
76struct ucred *crdup(struct ucred *cr);
77void crfree(struct ucred *cr);
78struct ucred *crget(void);
79struct ucred *crhold(struct ucred *);
80int suser(struct proc *p);
81int suser_ucred(struct ucred *cred);
82
83#endif /* _KERNEL */
84
85#endif /* !_SYS_UCRED_H_ */