2 * Security server interface.
4 * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
8 #ifndef _SELINUX_SECURITY_H_
9 #define _SELINUX_SECURITY_H_
13 #define SECSID_NULL 0x00000000 /* unspecified SID */
14 #define SECSID_WILD 0xffffffff /* wildcard SID */
15 #define SECCLASS_NULL 0x0000 /* no class */
17 #define SELINUX_MAGIC 0xf97cff8c
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 #define POLICYDB_VERSION_BOUNDARY 24
32 /* Range of policy versions we understand*/
33 #define POLICYDB_VERSION_MIN POLICYDB_VERSION_BASE
34 #ifdef CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX
35 #define POLICYDB_VERSION_MAX CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX_VALUE
37 #define POLICYDB_VERSION_MAX POLICYDB_VERSION_BOUNDARY
40 /* Mask for just the mount related flags */
41 #define SE_MNTMASK 0x0f
42 /* Super block security struct flags for mount options */
43 #define CONTEXT_MNT 0x01
44 #define FSCONTEXT_MNT 0x02
45 #define ROOTCONTEXT_MNT 0x04
46 #define DEFCONTEXT_MNT 0x08
47 /* Non-mount related flags */
48 #define SE_SBINITIALIZED 0x10
49 #define SE_SBPROC 0x20
51 #define CONTEXT_STR "context="
52 #define FSCONTEXT_STR "fscontext="
53 #define ROOTCONTEXT_STR "rootcontext="
54 #define DEFCONTEXT_STR "defcontext="
56 struct netlbl_lsm_secattr;
58 extern int selinux_enabled;
59 extern int selinux_mls_enabled;
61 /* Policy capabilities */
63 POLICYDB_CAPABILITY_NETPEER,
64 POLICYDB_CAPABILITY_OPENPERM,
65 __POLICYDB_CAPABILITY_MAX
67 #define POLICYDB_CAPABILITY_MAX (__POLICYDB_CAPABILITY_MAX - 1)
69 extern int selinux_policycap_netpeer;
70 extern int selinux_policycap_openperm;
73 * type_datum properties
74 * available at the kernel policy version >= POLICYDB_VERSION_BOUNDARY
76 #define TYPEDATUM_PROPERTY_PRIMARY 0x0001
77 #define TYPEDATUM_PROPERTY_ATTRIBUTE 0x0002
79 /* limitation of boundary depth */
80 #define POLICYDB_BOUNDS_MAXDEPTH 4
82 int security_load_policy(void *data, size_t len);
84 int security_policycap_supported(unsigned int req_cap);
86 #define SEL_VEC_MAX 32
95 int security_permissive_sid(u32 sid);
97 int security_compute_av(u32 ssid, u32 tsid,
98 u16 tclass, u32 requested,
99 struct av_decision *avd);
101 int security_transition_sid(u32 ssid, u32 tsid,
102 u16 tclass, u32 *out_sid);
104 int security_member_sid(u32 ssid, u32 tsid,
105 u16 tclass, u32 *out_sid);
107 int security_change_sid(u32 ssid, u32 tsid,
108 u16 tclass, u32 *out_sid);
110 int security_sid_to_context(u32 sid, char **scontext,
113 int security_sid_to_context_force(u32 sid, char **scontext, u32 *scontext_len);
115 int security_context_to_sid(const char *scontext, u32 scontext_len,
118 int security_context_to_sid_default(const char *scontext, u32 scontext_len,
119 u32 *out_sid, u32 def_sid, gfp_t gfp_flags);
121 int security_context_to_sid_force(const char *scontext, u32 scontext_len,
124 int security_get_user_sids(u32 callsid, char *username,
125 u32 **sids, u32 *nel);
127 int security_port_sid(u8 protocol, u16 port, u32 *out_sid);
129 int security_netif_sid(char *name, u32 *if_sid);
131 int security_node_sid(u16 domain, void *addr, u32 addrlen,
134 int security_validate_transition(u32 oldsid, u32 newsid, u32 tasksid,
137 int security_bounded_transition(u32 oldsid, u32 newsid);
139 int security_sid_mls_copy(u32 sid, u32 mls_sid, u32 *new_sid);
141 int security_net_peersid_resolve(u32 nlbl_sid, u32 nlbl_type,
145 int security_get_classes(char ***classes, int *nclasses);
146 int security_get_permissions(char *class, char ***perms, int *nperms);
147 int security_get_reject_unknown(void);
148 int security_get_allow_unknown(void);
150 #define SECURITY_FS_USE_XATTR 1 /* use xattr */
151 #define SECURITY_FS_USE_TRANS 2 /* use transition SIDs, e.g. devpts/tmpfs */
152 #define SECURITY_FS_USE_TASK 3 /* use task SIDs, e.g. pipefs/sockfs */
153 #define SECURITY_FS_USE_GENFS 4 /* use the genfs support */
154 #define SECURITY_FS_USE_NONE 5 /* no labeling support */
155 #define SECURITY_FS_USE_MNTPOINT 6 /* use mountpoint labeling */
157 int security_fs_use(const char *fstype, unsigned int *behavior,
160 int security_genfs_sid(const char *fstype, char *name, u16 sclass,
163 #ifdef CONFIG_NETLABEL
164 int security_netlbl_secattr_to_sid(struct netlbl_lsm_secattr *secattr,
167 int security_netlbl_sid_to_secattr(u32 sid,
168 struct netlbl_lsm_secattr *secattr);
170 static inline int security_netlbl_secattr_to_sid(
171 struct netlbl_lsm_secattr *secattr,
177 static inline int security_netlbl_sid_to_secattr(u32 sid,
178 struct netlbl_lsm_secattr *secattr)
182 #endif /* CONFIG_NETLABEL */
184 const char *security_get_initial_sid_context(u32 sid);
186 #endif /* _SELINUX_SECURITY_H_ */