xref: /titanic_44/usr/src/uts/common/sys/priv.h (revision 3ee6e1231b28188bebd1d5bb4a32a673f5820322)
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 (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
23  */
24 
25 #ifndef	_SYS_PRIV_H
26 #define	_SYS_PRIV_H
27 
28 #include <sys/types.h>
29 #include <sys/cred.h>
30 #include <sys/priv_names.h>
31 
32 #ifdef	__cplusplus
33 extern "C" {
34 #endif
35 
36 typedef uint32_t priv_chunk_t;
37 typedef struct priv_set priv_set_t;
38 
39 #ifdef _KERNEL
40 
41 /*
42  * Kernel type definitions.
43  */
44 typedef int priv_ptype_t;
45 typedef int priv_t;
46 
47 #else /* _KERNEL */
48 
49 /*
50  * Userland type definitions.
51  */
52 
53 #ifdef __STDC__
54 typedef const char *priv_ptype_t;
55 typedef const char *priv_t;
56 #else
57 typedef char *priv_ptype_t;
58 typedef char *priv_t;
59 #endif
60 
61 #endif /* _KERNEL */
62 
63 /*
64  * priv_op_t indicates a privilege operation type
65  */
66 typedef enum priv_op {
67 	PRIV_ON,
68 	PRIV_OFF,
69 	PRIV_SET
70 } priv_op_t;
71 
72 /*
73  * Privilege system call subcodes.
74  */
75 
76 #define	PRIVSYS_SETPPRIV	0
77 #define	PRIVSYS_GETPPRIV	1
78 #define	PRIVSYS_GETIMPLINFO	2
79 #define	PRIVSYS_SETPFLAGS	3
80 #define	PRIVSYS_GETPFLAGS	4
81 #define	PRIVSYS_ISSETUGID	5
82 #define	PRIVSYS_KLPD_REG	6
83 #define	PRIVSYS_KLPD_UNREG	7
84 #define	PRIVSYS_PFEXEC_REG	8
85 #define	PRIVSYS_PFEXEC_UNREG	9
86 
87 
88 /*
89  * Maximum length of a user defined privilege name.
90  */
91 #define	PRIVNAME_MAX		32
92 
93 /*
94  * Privilege interface functions for those parts of the kernel that
95  * know nothing of the privilege internals.
96  *
97  * A privilege implementation can have a varying number of sets; sets
98  * consist of a number of priv_chunk_t's and the size is expressed as such.
99  * The privileges can be represented as
100  *
101  *		priv_chunk_t privs[info.priv_nsets][info.priv_setsize]
102  *		... priv_infosize of extra information ...
103  *
104  * Extra data contained in the privilege information consists of chunks
105  * of data with specified size and type all headed by a priv_info_t header
106  * which defines both the type of information as well as the size of the
107  * information.  ((char*)&info)+info->priv_info_size should be rounded up
108  * to point to the next piece of information.
109  */
110 
111 typedef struct priv_impl_info {
112 	uint32_t	priv_headersize;	/* sizeof (priv_impl_info) */
113 	uint32_t	priv_flags;		/* additional flags */
114 	uint32_t	priv_nsets;		/* number of priv sets */
115 	uint32_t	priv_setsize;		/* size in priv_chunk_t */
116 	uint32_t	priv_max;		/* highest actual valid priv */
117 	uint32_t	priv_infosize;		/* Per proc. additional info */
118 	uint32_t	priv_globalinfosize;	/* Per system info */
119 } priv_impl_info_t;
120 
121 #define	PRIV_IMPL_INFO_SIZE(p) \
122 			((p)->priv_headersize + (p)->priv_globalinfosize)
123 
124 #define	PRIV_PRPRIV_INFO_OFFSET(p) \
125 		(sizeof (*(p)) + \
126 		((p)->pr_nsets * (p)->pr_setsize - 1) * sizeof (priv_chunk_t))
127 
128 #define	PRIV_PRPRIV_SIZE(p) \
129 		(PRIV_PRPRIV_INFO_OFFSET(p) + (p)->pr_infosize)
130 
131 /*
132  * Per credential flags.
133  */
134 #define	PRIV_DEBUG			0x0001		/* User debugging */
135 #define	PRIV_AWARE			0x0002		/* Is privilege aware */
136 #define	PRIV_AWARE_INHERIT		0x0004		/* Inherit awareness */
137 #define	__PROC_PROTECT			0x0008		/* Private */
138 #define	NET_MAC_AWARE			0x0010		/* Is MAC aware */
139 #define	NET_MAC_AWARE_INHERIT		0x0020		/* Inherit MAC aware */
140 #define	PRIV_AWARE_RESET		0x0040		/* Reset on setuid() */
141 #define	PRIV_XPOLICY			0x0080		/* Extended policy */
142 #define	PRIV_PFEXEC			0x0100		/* As if pfexec'ed */
143 
144 /* user-settable flags: */
145 #define	PRIV_USER	(PRIV_DEBUG | NET_MAC_AWARE | NET_MAC_AWARE_INHERIT |\
146 			    PRIV_XPOLICY | PRIV_AWARE_RESET | PRIV_PFEXEC)
147 
148 /*
149  * Header of the privilege info data structure; multiple structures can
150  * follow the privilege sets and priv_impl_info structures.
151  */
152 typedef struct priv_info {
153 	uint32_t	priv_info_type;
154 	uint32_t	priv_info_size;
155 } priv_info_t;
156 
157 typedef struct priv_info_uint {
158 	priv_info_t	info;
159 	uint_t		val;
160 } priv_info_uint_t;
161 
162 /*
163  * Global privilege set information item; the actual size of the array is
164  * {priv_setsize}.
165  */
166 typedef struct priv_info_set {
167 	priv_info_t	info;
168 	priv_chunk_t	set[1];
169 } priv_info_set_t;
170 
171 /*
172  * names[1] is a place holder which can contain multiple NUL terminated,
173  * non-empty strings.
174  */
175 
176 typedef struct priv_info_names {
177 	priv_info_t	info;
178 	int		cnt;		/* number of strings */
179 	char		names[1];	/* "string1\0string2\0 ..stringN\0" */
180 } priv_info_names_t;
181 
182 /*
183  * Privilege information types.
184  */
185 #define	PRIV_INFO_SETNAMES		0x0001
186 #define	PRIV_INFO_PRIVNAMES		0x0002
187 #define	PRIV_INFO_BASICPRIVS		0x0003
188 #define	PRIV_INFO_FLAGS			0x0004
189 
190 /*
191  * Special "privileges" used to indicate special conditions in privilege
192  * debugging/tracing code.
193  */
194 #define	PRIV_ALL			(-1)	/* All privileges required */
195 #define	PRIV_MULTIPLE			(-2)	/* More than one */
196 #define	PRIV_NONE			(-3)	/* No value */
197 #define	PRIV_ALLZONE			(-4)	/* All privileges in zone */
198 #define	PRIV_GLOBAL			(-5)	/* Must be in global zone */
199 
200 #ifdef _KERNEL
201 
202 #define	PRIV_ALLOC			0x1
203 
204 extern int priv_debug;
205 extern int priv_basic_test;
206 
207 struct proc;
208 struct prpriv;
209 struct cred;
210 
211 extern int priv_prgetprivsize(struct prpriv *);
212 extern void cred2prpriv(const struct cred *, struct prpriv *);
213 extern int priv_pr_spriv(struct proc *, struct prpriv *, const struct cred *);
214 
215 extern priv_impl_info_t *priv_hold_implinfo(void);
216 extern void priv_release_implinfo(void);
217 extern size_t priv_get_implinfo_size(void);
218 extern const priv_set_t *priv_getset(const struct cred *, int);
219 extern void priv_getinfo(const struct cred *, void *);
220 extern int priv_getbyname(const char *, uint_t);
221 extern int priv_getsetbyname(const char *, int);
222 extern const char *priv_getbynum(int);
223 extern const char *priv_getsetbynum(int);
224 
225 extern void priv_emptyset(priv_set_t *);
226 extern void priv_fillset(priv_set_t *);
227 extern void priv_addset(priv_set_t *, int);
228 extern void priv_delset(priv_set_t *, int);
229 extern boolean_t priv_ismember(const priv_set_t *, int);
230 extern boolean_t priv_isemptyset(const priv_set_t *);
231 extern boolean_t priv_isfullset(const priv_set_t *);
232 extern boolean_t priv_isequalset(const priv_set_t *, const priv_set_t *);
233 extern boolean_t priv_issubset(const priv_set_t *, const priv_set_t *);
234 extern int priv_proc_cred_perm(const struct cred *, struct proc *,
235 	struct cred **, int);
236 extern void priv_intersect(const priv_set_t *, priv_set_t *);
237 extern void priv_union(const priv_set_t *, priv_set_t *);
238 extern void priv_inverse(priv_set_t *);
239 
240 extern void priv_set_PA(cred_t *);
241 extern void priv_adjust_PA(cred_t *);
242 extern void priv_reset_PA(cred_t *, boolean_t);
243 extern boolean_t priv_can_clear_PA(const cred_t *);
244 
245 extern int setpflags(uint_t, uint_t, cred_t *);
246 extern uint_t getpflags(uint_t, const cred_t *);
247 
248 #endif /* _KERNEL */
249 
250 #ifdef	__cplusplus
251 }
252 #endif
253 
254 #endif	/* _SYS_PRIV_H */
255