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 2014 Garrett D'Amore <garrett@damore.org>
23 *
24 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
25 */
26
27 #ifndef _SYS_PRIV_H
28 #define _SYS_PRIV_H
29
30 #include <sys/types.h>
31 #include <sys/cred.h>
32 #include <sys/priv_names.h>
33
34 #ifdef __cplusplus
35 extern "C" {
36 #endif
37
38 typedef uint32_t priv_chunk_t;
39 typedef struct priv_set priv_set_t;
40
41 #ifdef _KERNEL
42
43 /*
44 * Kernel type definitions.
45 */
46 typedef int priv_ptype_t;
47 typedef int priv_t;
48
49 #else /* _KERNEL */
50
51 /*
52 * Userland type definitions.
53 */
54
55 typedef const char *priv_ptype_t;
56 typedef const char *priv_t;
57
58 #endif /* _KERNEL */
59
60 /*
61 * priv_op_t indicates a privilege operation type
62 */
63 typedef enum priv_op {
64 PRIV_ON,
65 PRIV_OFF,
66 PRIV_SET
67 } priv_op_t;
68
69 /*
70 * Privilege system call subcodes.
71 */
72
73 #define PRIVSYS_SETPPRIV 0
74 #define PRIVSYS_GETPPRIV 1
75 #define PRIVSYS_GETIMPLINFO 2
76 #define PRIVSYS_SETPFLAGS 3
77 #define PRIVSYS_GETPFLAGS 4
78 #define PRIVSYS_ISSETUGID 5
79 #define PRIVSYS_KLPD_REG 6
80 #define PRIVSYS_KLPD_UNREG 7
81 #define PRIVSYS_PFEXEC_REG 8
82 #define PRIVSYS_PFEXEC_UNREG 9
83
84
85 /*
86 * Maximum length of a user defined privilege name.
87 */
88 #define PRIVNAME_MAX 32
89
90 /*
91 * Privilege interface functions for those parts of the kernel that
92 * know nothing of the privilege internals.
93 *
94 * A privilege implementation can have a varying number of sets; sets
95 * consist of a number of priv_chunk_t's and the size is expressed as such.
96 * The privileges can be represented as
97 *
98 * priv_chunk_t privs[info.priv_nsets][info.priv_setsize]
99 * ... priv_infosize of extra information ...
100 *
101 * Extra data contained in the privilege information consists of chunks
102 * of data with specified size and type all headed by a priv_info_t header
103 * which defines both the type of information as well as the size of the
104 * information. ((char*)&info)+info->priv_info_size should be rounded up
105 * to point to the next piece of information.
106 */
107
108 typedef struct priv_impl_info {
109 uint32_t priv_headersize; /* sizeof (priv_impl_info) */
110 uint32_t priv_flags; /* additional flags */
111 uint32_t priv_nsets; /* number of priv sets */
112 uint32_t priv_setsize; /* size in priv_chunk_t */
113 uint32_t priv_max; /* highest actual valid priv */
114 uint32_t priv_infosize; /* Per proc. additional info */
115 uint32_t priv_globalinfosize; /* Per system info */
116 } priv_impl_info_t;
117
118 #define PRIV_IMPL_INFO_SIZE(p) \
119 ((p)->priv_headersize + (p)->priv_globalinfosize)
120
121 #define PRIV_PRPRIV_INFO_OFFSET(p) \
122 (sizeof (*(p)) + \
123 ((p)->pr_nsets * (p)->pr_setsize - 1) * sizeof (priv_chunk_t))
124
125 #define PRIV_PRPRIV_SIZE(p) \
126 (PRIV_PRPRIV_INFO_OFFSET(p) + (p)->pr_infosize)
127
128 /*
129 * Per credential flags.
130 */
131 #define PRIV_DEBUG 0x0001 /* User debugging */
132 #define PRIV_AWARE 0x0002 /* Is privilege aware */
133 #define PRIV_AWARE_INHERIT 0x0004 /* Inherit awareness */
134 #define __PROC_PROTECT 0x0008 /* Private */
135 #define NET_MAC_AWARE 0x0010 /* Is MAC aware */
136 #define NET_MAC_AWARE_INHERIT 0x0020 /* Inherit MAC aware */
137 #define PRIV_AWARE_RESET 0x0040 /* Reset on setuid() */
138 #define PRIV_XPOLICY 0x0080 /* Extended policy */
139 #define PRIV_PFEXEC 0x0100 /* As if pfexec'ed */
140
141 /* user-settable flags: */
142 #define PRIV_USER (PRIV_DEBUG | NET_MAC_AWARE | NET_MAC_AWARE_INHERIT |\
143 PRIV_XPOLICY | PRIV_AWARE_RESET | PRIV_PFEXEC)
144
145 /*
146 * Header of the privilege info data structure; multiple structures can
147 * follow the privilege sets and priv_impl_info structures.
148 */
149 typedef struct priv_info {
150 uint32_t priv_info_type;
151 uint32_t priv_info_size;
152 } priv_info_t;
153
154 typedef struct priv_info_uint {
155 priv_info_t info;
156 uint_t val;
157 } priv_info_uint_t;
158
159 /*
160 * Global privilege set information item; the actual size of the array is
161 * {priv_setsize}.
162 */
163 typedef struct priv_info_set {
164 priv_info_t info;
165 priv_chunk_t set[1];
166 } priv_info_set_t;
167
168 /*
169 * names[1] is a place holder which can contain multiple NUL terminated,
170 * non-empty strings.
171 */
172
173 typedef struct priv_info_names {
174 priv_info_t info;
175 int cnt; /* number of strings */
176 char names[1]; /* "string1\0string2\0 ..stringN\0" */
177 } priv_info_names_t;
178
179 /*
180 * Privilege information types.
181 */
182 #define PRIV_INFO_SETNAMES 0x0001
183 #define PRIV_INFO_PRIVNAMES 0x0002
184 #define PRIV_INFO_BASICPRIVS 0x0003
185 #define PRIV_INFO_FLAGS 0x0004
186 #define PRIV_INFO_DEFAULTPRIVS 0x0005
187
188 /*
189 * Special "privileges" used to indicate special conditions in privilege
190 * debugging/tracing code.
191 */
192 #define PRIV_ALL (-1) /* All privileges required */
193 #define PRIV_MULTIPLE (-2) /* More than one */
194 #define PRIV_NONE (-3) /* No value */
195 #define PRIV_ALLZONE (-4) /* All privileges in zone */
196 #define PRIV_GLOBAL (-5) /* Must be in global zone */
197
198 #ifdef _KERNEL
199
200 #define PRIV_ALLOC 0x1
201
202 extern int priv_debug;
203 extern int priv_basic_test;
204
205 struct proc;
206 struct prpriv;
207 struct cred;
208
209 extern int priv_prgetprivsize(struct prpriv *);
210 extern void cred2prpriv(const struct cred *, struct prpriv *);
211 extern int priv_pr_spriv(struct proc *, struct prpriv *, const struct cred *);
212
213 extern priv_impl_info_t *priv_hold_implinfo(void);
214 extern void priv_release_implinfo(void);
215 extern size_t priv_get_implinfo_size(void);
216 extern const priv_set_t *priv_getset(const struct cred *, int);
217 extern void priv_getinfo(const struct cred *, void *);
218 extern int priv_getbyname(const char *, uint_t);
219 extern int priv_getsetbyname(const char *, int);
220 extern const char *priv_getbynum(int);
221 extern const char *priv_getsetbynum(int);
222
223 extern void priv_emptyset(priv_set_t *);
224 extern void priv_fillset(priv_set_t *);
225 extern void priv_addset(priv_set_t *, int);
226 extern void priv_delset(priv_set_t *, int);
227 extern boolean_t priv_ismember(const priv_set_t *, int);
228 extern boolean_t priv_isemptyset(const priv_set_t *);
229 extern boolean_t priv_isfullset(const priv_set_t *);
230 extern boolean_t priv_isequalset(const priv_set_t *, const priv_set_t *);
231 extern boolean_t priv_issubset(const priv_set_t *, const priv_set_t *);
232 extern int priv_proc_cred_perm(const struct cred *, struct proc *,
233 struct cred **, int);
234 extern void priv_intersect(const priv_set_t *, priv_set_t *);
235 extern void priv_union(const priv_set_t *, priv_set_t *);
236 extern void priv_inverse(priv_set_t *);
237
238 extern void priv_set_PA(cred_t *);
239 extern void priv_adjust_PA(cred_t *);
240 extern void priv_reset_PA(cred_t *, boolean_t);
241 extern boolean_t priv_can_clear_PA(const cred_t *);
242
243 extern int setpflags(uint_t, uint_t, cred_t *);
244 extern uint_t getpflags(uint_t, const cred_t *);
245
246 #endif /* _KERNEL */
247
248 #ifdef __cplusplus
249 }
250 #endif
251
252 #endif /* _SYS_PRIV_H */