2 * Security server interface.
4 * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
8 #ifndef _SELINUX_SECURITY_H_
9 #define _SELINUX_SECURITY_H_
11 #include <linux/magic.h>
14 #define SECSID_NULL 0x00000000 /* unspecified SID */
15 #define SECSID_WILD 0xffffffff /* wildcard SID */
16 #define SECCLASS_NULL 0x0000 /* no class */
18 /* Identify specific policy version changes */
19 #define POLICYDB_VERSION_BASE 15
20 #define POLICYDB_VERSION_BOOL 16
21 #define POLICYDB_VERSION_IPV6 17
22 #define POLICYDB_VERSION_NLCLASS 18
23 #define POLICYDB_VERSION_VALIDATETRANS 19
24 #define POLICYDB_VERSION_MLS 19
25 #define POLICYDB_VERSION_AVTAB 20
26 #define POLICYDB_VERSION_RANGETRANS 21
27 #define POLICYDB_VERSION_POLCAP 22
28 #define POLICYDB_VERSION_PERMISSIVE 23
29 #define POLICYDB_VERSION_BOUNDARY 24
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
36 #define POLICYDB_VERSION_MAX POLICYDB_VERSION_BOUNDARY
39 /* Mask for just the mount related flags */
40 #define SE_MNTMASK 0x0f
41 /* Super block security struct flags for mount options */
42 #define CONTEXT_MNT 0x01
43 #define FSCONTEXT_MNT 0x02
44 #define ROOTCONTEXT_MNT 0x04
45 #define DEFCONTEXT_MNT 0x08
46 /* Non-mount related flags */
47 #define SE_SBINITIALIZED 0x10
48 #define SE_SBPROC 0x20
49 #define SE_SBLABELSUPP 0x40
51 #define CONTEXT_STR "context="
52 #define FSCONTEXT_STR "fscontext="
53 #define ROOTCONTEXT_STR "rootcontext="
54 #define DEFCONTEXT_STR "defcontext="
55 #define LABELSUPP_STR "seclabel"
57 struct netlbl_lsm_secattr;
59 extern int selinux_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_mls_enabled(void);
84 int security_load_policy(void *data, size_t len);
86 int security_policycap_supported(unsigned int req_cap);
88 #define SEL_VEC_MAX 32
97 /* definitions of av_decision.flags */
98 #define AVD_FLAGS_PERMISSIVE 0x0001
100 void security_compute_av(u32 ssid, u32 tsid,
101 u16 tclass, struct av_decision *avd);
103 void security_compute_av_user(u32 ssid, u32 tsid,
104 u16 tclass, struct av_decision *avd);
106 int security_transition_sid(u32 ssid, u32 tsid,
107 u16 tclass, u32 *out_sid);
109 int security_transition_sid_user(u32 ssid, u32 tsid,
110 u16 tclass, u32 *out_sid);
112 int security_member_sid(u32 ssid, u32 tsid,
113 u16 tclass, u32 *out_sid);
115 int security_change_sid(u32 ssid, u32 tsid,
116 u16 tclass, u32 *out_sid);
118 int security_sid_to_context(u32 sid, char **scontext,
121 int security_sid_to_context_force(u32 sid, char **scontext, u32 *scontext_len);
123 int security_context_to_sid(const char *scontext, u32 scontext_len,
126 int security_context_to_sid_default(const char *scontext, u32 scontext_len,
127 u32 *out_sid, u32 def_sid, gfp_t gfp_flags);
129 int security_context_to_sid_force(const char *scontext, u32 scontext_len,
132 int security_get_user_sids(u32 callsid, char *username,
133 u32 **sids, u32 *nel);
135 int security_port_sid(u8 protocol, u16 port, u32 *out_sid);
137 int security_netif_sid(char *name, u32 *if_sid);
139 int security_node_sid(u16 domain, void *addr, u32 addrlen,
142 int security_validate_transition(u32 oldsid, u32 newsid, u32 tasksid,
145 int security_bounded_transition(u32 oldsid, u32 newsid);
147 int security_sid_mls_copy(u32 sid, u32 mls_sid, u32 *new_sid);
149 int security_net_peersid_resolve(u32 nlbl_sid, u32 nlbl_type,
153 int security_get_classes(char ***classes, int *nclasses);
154 int security_get_permissions(char *class, char ***perms, int *nperms);
155 int security_get_reject_unknown(void);
156 int security_get_allow_unknown(void);
158 #define SECURITY_FS_USE_XATTR 1 /* use xattr */
159 #define SECURITY_FS_USE_TRANS 2 /* use transition SIDs, e.g. devpts/tmpfs */
160 #define SECURITY_FS_USE_TASK 3 /* use task SIDs, e.g. pipefs/sockfs */
161 #define SECURITY_FS_USE_GENFS 4 /* use the genfs support */
162 #define SECURITY_FS_USE_NONE 5 /* no labeling support */
163 #define SECURITY_FS_USE_MNTPOINT 6 /* use mountpoint labeling */
165 int security_fs_use(const char *fstype, unsigned int *behavior,
168 int security_genfs_sid(const char *fstype, char *name, u16 sclass,
171 #ifdef CONFIG_NETLABEL
172 int security_netlbl_secattr_to_sid(struct netlbl_lsm_secattr *secattr,
175 int security_netlbl_sid_to_secattr(u32 sid,
176 struct netlbl_lsm_secattr *secattr);
178 static inline int security_netlbl_secattr_to_sid(
179 struct netlbl_lsm_secattr *secattr,
185 static inline int security_netlbl_sid_to_secattr(u32 sid,
186 struct netlbl_lsm_secattr *secattr)
190 #endif /* CONFIG_NETLABEL */
192 const char *security_get_initial_sid_context(u32 sid);
195 * status notifier using mmap interface
197 extern struct page *selinux_kernel_status_page(void);
199 #define SELINUX_KERNEL_STATUS_VERSION 1
200 struct selinux_kernel_status
202 u32 version; /* version number of thie structure */
203 u32 sequence; /* sequence number of seqlock logic */
204 u32 enforcing; /* current setting of enforcing mode */
205 u32 policyload; /* times of policy reloaded */
206 u32 deny_unknown; /* current setting of deny_unknown */
208 * The version > 0 supports above members.
210 } __attribute__((packed));
212 extern void selinux_status_update_setenforce(int enforcing);
213 extern void selinux_status_update_policyload(int seqno);
215 #endif /* _SELINUX_SECURITY_H_ */