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linux
1/*
2 * Security server interface.
3 *
4 * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
5 *
6 */
7
8#ifndef _SELINUX_SECURITY_H_
9#define _SELINUX_SECURITY_H_
10
11#include "flask.h"
12
13#define SECSID_NULL 0x00000000 /* unspecified SID */
14#define SECSID_WILD 0xffffffff /* wildcard SID */
15#define SECCLASS_NULL 0x0000 /* no class */
16
17#define SELINUX_MAGIC 0xf97cff8c
18
19/* Identify specific policy version changes */
20#define POLICYDB_VERSION_BASE 15
21#define POLICYDB_VERSION_BOOL 16
22#define POLICYDB_VERSION_IPV6 17
23#define POLICYDB_VERSION_NLCLASS 18
24#define POLICYDB_VERSION_VALIDATETRANS 19
25#define POLICYDB_VERSION_MLS 19
26#define POLICYDB_VERSION_AVTAB 20
27#define POLICYDB_VERSION_RANGETRANS 21
28#define POLICYDB_VERSION_POLCAP 22
29#define POLICYDB_VERSION_PERMISSIVE 23
30
31/* Range of policy versions we understand*/
32#define POLICYDB_VERSION_MIN POLICYDB_VERSION_BASE
33#ifdef CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX
34#define POLICYDB_VERSION_MAX CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX_VALUE
35#else
36#define POLICYDB_VERSION_MAX POLICYDB_VERSION_PERMISSIVE
37#endif
38
39#define CONTEXT_MNT 0x01
40#define FSCONTEXT_MNT 0x02
41#define ROOTCONTEXT_MNT 0x04
42#define DEFCONTEXT_MNT 0x08
43
44#define CONTEXT_STR "context="
45#define FSCONTEXT_STR "fscontext="
46#define ROOTCONTEXT_STR "rootcontext="
47#define DEFCONTEXT_STR "defcontext="
48
49struct netlbl_lsm_secattr;
50
51extern int selinux_enabled;
52extern int selinux_mls_enabled;
53
54/* Policy capabilities */
55enum {
56 POLICYDB_CAPABILITY_NETPEER,
57 POLICYDB_CAPABILITY_OPENPERM,
58 __POLICYDB_CAPABILITY_MAX
59};
60#define POLICYDB_CAPABILITY_MAX (__POLICYDB_CAPABILITY_MAX - 1)
61
62extern int selinux_policycap_netpeer;
63extern int selinux_policycap_openperm;
64
65int security_load_policy(void *data, size_t len);
66
67int security_policycap_supported(unsigned int req_cap);
68
69#define SEL_VEC_MAX 32
70struct av_decision {
71 u32 allowed;
72 u32 decided;
73 u32 auditallow;
74 u32 auditdeny;
75 u32 seqno;
76};
77
78int security_permissive_sid(u32 sid);
79
80int security_compute_av(u32 ssid, u32 tsid,
81 u16 tclass, u32 requested,
82 struct av_decision *avd);
83
84int security_transition_sid(u32 ssid, u32 tsid,
85 u16 tclass, u32 *out_sid);
86
87int security_member_sid(u32 ssid, u32 tsid,
88 u16 tclass, u32 *out_sid);
89
90int security_change_sid(u32 ssid, u32 tsid,
91 u16 tclass, u32 *out_sid);
92
93int security_sid_to_context(u32 sid, char **scontext,
94 u32 *scontext_len);
95
96int security_context_to_sid(const char *scontext, u32 scontext_len,
97 u32 *out_sid);
98
99int security_context_to_sid_default(const char *scontext, u32 scontext_len,
100 u32 *out_sid, u32 def_sid, gfp_t gfp_flags);
101
102int security_get_user_sids(u32 callsid, char *username,
103 u32 **sids, u32 *nel);
104
105int security_port_sid(u8 protocol, u16 port, u32 *out_sid);
106
107int security_netif_sid(char *name, u32 *if_sid);
108
109int security_node_sid(u16 domain, void *addr, u32 addrlen,
110 u32 *out_sid);
111
112int security_validate_transition(u32 oldsid, u32 newsid, u32 tasksid,
113 u16 tclass);
114
115int security_sid_mls_copy(u32 sid, u32 mls_sid, u32 *new_sid);
116
117int security_net_peersid_resolve(u32 nlbl_sid, u32 nlbl_type,
118 u32 xfrm_sid,
119 u32 *peer_sid);
120
121int security_get_classes(char ***classes, int *nclasses);
122int security_get_permissions(char *class, char ***perms, int *nperms);
123int security_get_reject_unknown(void);
124int security_get_allow_unknown(void);
125
126#define SECURITY_FS_USE_XATTR 1 /* use xattr */
127#define SECURITY_FS_USE_TRANS 2 /* use transition SIDs, e.g. devpts/tmpfs */
128#define SECURITY_FS_USE_TASK 3 /* use task SIDs, e.g. pipefs/sockfs */
129#define SECURITY_FS_USE_GENFS 4 /* use the genfs support */
130#define SECURITY_FS_USE_NONE 5 /* no labeling support */
131#define SECURITY_FS_USE_MNTPOINT 6 /* use mountpoint labeling */
132
133int security_fs_use(const char *fstype, unsigned int *behavior,
134 u32 *sid);
135
136int security_genfs_sid(const char *fstype, char *name, u16 sclass,
137 u32 *sid);
138
139#ifdef CONFIG_NETLABEL
140int security_netlbl_secattr_to_sid(struct netlbl_lsm_secattr *secattr,
141 u32 *sid);
142
143int security_netlbl_sid_to_secattr(u32 sid,
144 struct netlbl_lsm_secattr *secattr);
145#else
146static inline int security_netlbl_secattr_to_sid(
147 struct netlbl_lsm_secattr *secattr,
148 u32 *sid)
149{
150 return -EIDRM;
151}
152
153static inline int security_netlbl_sid_to_secattr(u32 sid,
154 struct netlbl_lsm_secattr *secattr)
155{
156 return -ENOENT;
157}
158#endif /* CONFIG_NETLABEL */
159
160const char *security_get_initial_sid_context(u32 sid);
161
162#endif /* _SELINUX_SECURITY_H_ */
163