1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
27 /* All Rights Reserved */
28
29 /*
30 * Portions of this source code were derived from Berkeley 4.3 BSD
31 * under license from the Regents of the University of California.
32 */
33
34 #ifndef _SYS_CRED_H
35 #define _SYS_CRED_H
36
37 #include <sys/types.h>
38
39 #ifdef __cplusplus
40 extern "C" {
41 #endif
42
43 /*
44 * The credential is an opaque kernel private data structure defined in
45 * <sys/cred_impl.h>.
46 */
47
48 typedef struct cred cred_t;
49
50 #ifdef _KERNEL
51
52 #define CRED() curthread->t_cred
53
54 struct proc; /* cred.h is included in proc.h */
55 struct prcred;
56 struct ksid;
57 struct ksidlist;
58 struct credklpd;
59 struct credgrp;
60
61 struct auditinfo_addr; /* cred.h is included in audit.h */
62
63 extern int ngroups_max;
64 /*
65 * kcred is used when you need all privileges.
66 */
67 extern struct cred *kcred;
68
69 extern void cred_init(void);
70 extern void crhold(cred_t *);
71 extern void crfree(cred_t *);
72 extern cred_t *cralloc(void); /* all but ref uninitialized */
73 extern cred_t *cralloc_ksid(void); /* cralloc() + ksid alloc'ed */
74 extern cred_t *crget(void); /* initialized */
75 extern cred_t *crcopy(cred_t *);
76 extern void crcopy_to(cred_t *, cred_t *);
77 extern cred_t *crdup(cred_t *);
78 extern void crdup_to(cred_t *, cred_t *);
79 extern cred_t *crgetcred(void);
80 extern void crset(struct proc *, cred_t *);
81 extern void crset_zone_privall(cred_t *);
82 extern int groupmember(gid_t, const cred_t *);
83 extern int supgroupmember(gid_t, const cred_t *);
84 extern int hasprocperm(const cred_t *, const cred_t *);
85 extern int prochasprocperm(struct proc *, struct proc *, const cred_t *);
86 extern int crcmp(const cred_t *, const cred_t *);
87 extern cred_t *zone_kcred(void);
88
89 extern uid_t crgetuid(const cred_t *);
90 extern uid_t crgetruid(const cred_t *);
91 extern uid_t crgetsuid(const cred_t *);
92 extern gid_t crgetgid(const cred_t *);
93 extern gid_t crgetrgid(const cred_t *);
94 extern gid_t crgetsgid(const cred_t *);
95 extern zoneid_t crgetzoneid(const cred_t *);
96 extern projid_t crgetprojid(const cred_t *);
97
98 extern cred_t *crgetmapped(const cred_t *);
99
100
101 extern const struct auditinfo_addr *crgetauinfo(const cred_t *);
102 extern struct auditinfo_addr *crgetauinfo_modifiable(cred_t *);
103
104 extern uint_t crgetref(const cred_t *);
105
106 extern const gid_t *crgetgroups(const cred_t *);
107 extern const gid_t *crgetggroups(const struct credgrp *);
108
109 extern int crgetngroups(const cred_t *);
110
111 /*
112 * Sets real, effective and/or saved uid/gid;
113 * -1 argument accepted as "no change".
114 */
115 extern int crsetresuid(cred_t *, uid_t, uid_t, uid_t);
116 extern int crsetresgid(cred_t *, gid_t, gid_t, gid_t);
117
118 /*
119 * Sets real, effective and saved uids/gids all to the same
120 * values. Both values must be non-negative and <= MAXUID
121 */
122 extern int crsetugid(cred_t *, uid_t, gid_t);
123
124 /*
125 * Functions to handle the supplemental group list.
126 */
127 extern int crsetgroups(cred_t *, int, gid_t *);
128 extern struct credgrp *crgrpcopyin(int, gid_t *);
129 extern void crgrprele(struct credgrp *);
130 extern void crsetcredgrp(cred_t *, struct credgrp *);
131
132 /*
133 * Private interface for setting zone association of credential.
134 */
135 struct zone;
136 extern void crsetzone(cred_t *, struct zone *);
137 extern struct zone *crgetzone(const cred_t *);
138
139 /*
140 * Private interface for setting project id in credential.
141 */
142 extern void crsetprojid(cred_t *, projid_t);
143
144 /*
145 * Private interface for nfs.
146 */
147 extern cred_t *crnetadjust(cred_t *);
148
149 /*
150 * Private interface for procfs.
151 */
152 extern void cred2prcred(const cred_t *, struct prcred *);
153
154 /*
155 * Private interfaces for Rampart Trusted Solaris.
156 */
157 struct ts_label_s;
158 extern struct ts_label_s *crgetlabel(const cred_t *);
159 extern boolean_t crisremote(const cred_t *);
160
161 /*
162 * Private interfaces for ephemeral uids.
163 */
164 #define VALID_UID(id, zn) \
165 ((id) <= MAXUID || valid_ephemeral_uid((zn), (id)))
166
167 #define VALID_GID(id, zn) \
168 ((id) <= MAXUID || valid_ephemeral_gid((zn), (id)))
169
170 extern boolean_t valid_ephemeral_uid(struct zone *, uid_t);
171 extern boolean_t valid_ephemeral_gid(struct zone *, gid_t);
172
173 extern int eph_uid_alloc(struct zone *, int, uid_t *, int);
174 extern int eph_gid_alloc(struct zone *, int, gid_t *, int);
175
176 extern void crsetsid(cred_t *, struct ksid *, int);
177 extern void crsetsidlist(cred_t *, struct ksidlist *);
178
179 extern struct ksid *crgetsid(const cred_t *, int);
180 extern struct ksidlist *crgetsidlist(const cred_t *);
181
182 extern int crsetpriv(cred_t *, ...);
183
184 extern struct credklpd *crgetcrklpd(const cred_t *);
185 extern void crsetcrklpd(cred_t *, struct credklpd *);
186
187 #endif /* _KERNEL */
188
189 #ifdef __cplusplus
190 }
191 #endif
192
193 #endif /* _SYS_CRED_H */