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1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Security server interface.
4 *
5 * Author : Stephen Smalley, <sds@tycho.nsa.gov>
6 *
7 */
8
9#ifndef _SELINUX_SECURITY_H_
10#define _SELINUX_SECURITY_H_
11
12#include <linux/compiler.h>
13#include <linux/dcache.h>
14#include <linux/magic.h>
15#include <linux/types.h>
16#include <linux/rcupdate.h>
17#include <linux/refcount.h>
18#include <linux/workqueue.h>
19#include <linux/delay.h>
20#include <linux/printk.h>
21#include "flask.h"
22#include "policycap.h"
23
24#define SECSID_NULL 0x00000000 /* unspecified SID */
25#define SECSID_WILD 0xffffffff /* wildcard SID */
26#define SECCLASS_NULL 0x0000 /* no class */
27
28/* Identify specific policy version changes */
29#define POLICYDB_VERSION_BASE 15
30#define POLICYDB_VERSION_BOOL 16
31#define POLICYDB_VERSION_IPV6 17
32#define POLICYDB_VERSION_NLCLASS 18
33#define POLICYDB_VERSION_VALIDATETRANS 19
34#define POLICYDB_VERSION_MLS 19
35#define POLICYDB_VERSION_AVTAB 20
36#define POLICYDB_VERSION_RANGETRANS 21
37#define POLICYDB_VERSION_POLCAP 22
38#define POLICYDB_VERSION_PERMISSIVE 23
39#define POLICYDB_VERSION_BOUNDARY 24
40#define POLICYDB_VERSION_FILENAME_TRANS 25
41#define POLICYDB_VERSION_ROLETRANS 26
42#define POLICYDB_VERSION_NEW_OBJECT_DEFAULTS 27
43#define POLICYDB_VERSION_DEFAULT_TYPE 28
44#define POLICYDB_VERSION_CONSTRAINT_NAMES 29
45#define POLICYDB_VERSION_XPERMS_IOCTL 30
46#define POLICYDB_VERSION_INFINIBAND 31
47#define POLICYDB_VERSION_GLBLUB 32
48#define POLICYDB_VERSION_COMP_FTRANS 33 /* compressed filename transitions */
49
50/* Range of policy versions we understand*/
51#define POLICYDB_VERSION_MIN POLICYDB_VERSION_BASE
52#define POLICYDB_VERSION_MAX POLICYDB_VERSION_COMP_FTRANS
53
54/* Mask for just the mount related flags */
55#define SE_MNTMASK 0x0f
56/* Super block security struct flags for mount options */
57/* BE CAREFUL, these need to be the low order bits for selinux_get_mnt_opts */
58#define CONTEXT_MNT 0x01
59#define FSCONTEXT_MNT 0x02
60#define ROOTCONTEXT_MNT 0x04
61#define DEFCONTEXT_MNT 0x08
62#define SBLABEL_MNT 0x10
63/* Non-mount related flags */
64#define SE_SBINITIALIZED 0x0100
65#define SE_SBPROC 0x0200
66#define SE_SBGENFS 0x0400
67#define SE_SBGENFS_XATTR 0x0800
68
69#define CONTEXT_STR "context"
70#define FSCONTEXT_STR "fscontext"
71#define ROOTCONTEXT_STR "rootcontext"
72#define DEFCONTEXT_STR "defcontext"
73#define SECLABEL_STR "seclabel"
74
75struct netlbl_lsm_secattr;
76
77extern int selinux_enabled_boot;
78
79/*
80 * type_datum properties
81 * available at the kernel policy version >= POLICYDB_VERSION_BOUNDARY
82 */
83#define TYPEDATUM_PROPERTY_PRIMARY 0x0001
84#define TYPEDATUM_PROPERTY_ATTRIBUTE 0x0002
85
86/* limitation of boundary depth */
87#define POLICYDB_BOUNDS_MAXDEPTH 4
88
89struct selinux_avc;
90struct selinux_policy;
91
92struct selinux_state {
93#ifdef CONFIG_SECURITY_SELINUX_DISABLE
94 bool disabled;
95#endif
96#ifdef CONFIG_SECURITY_SELINUX_DEVELOP
97 bool enforcing;
98#endif
99 bool checkreqprot;
100 bool initialized;
101 bool policycap[__POLICYDB_CAP_MAX];
102
103 struct page *status_page;
104 struct mutex status_lock;
105
106 struct selinux_avc *avc;
107 struct selinux_policy __rcu *policy;
108 struct mutex policy_mutex;
109} __randomize_layout;
110
111void selinux_avc_init(struct selinux_avc **avc);
112
113extern struct selinux_state selinux_state;
114
115static inline bool selinux_initialized(const struct selinux_state *state)
116{
117 /* do a synchronized load to avoid race conditions */
118 return smp_load_acquire(&state->initialized);
119}
120
121static inline void selinux_mark_initialized(struct selinux_state *state)
122{
123 /* do a synchronized write to avoid race conditions */
124 smp_store_release(&state->initialized, true);
125}
126
127#ifdef CONFIG_SECURITY_SELINUX_DEVELOP
128static inline bool enforcing_enabled(struct selinux_state *state)
129{
130 return READ_ONCE(state->enforcing);
131}
132
133static inline void enforcing_set(struct selinux_state *state, bool value)
134{
135 WRITE_ONCE(state->enforcing, value);
136}
137#else
138static inline bool enforcing_enabled(struct selinux_state *state)
139{
140 return true;
141}
142
143static inline void enforcing_set(struct selinux_state *state, bool value)
144{
145}
146#endif
147
148static inline bool checkreqprot_get(const struct selinux_state *state)
149{
150 return READ_ONCE(state->checkreqprot);
151}
152
153static inline void checkreqprot_set(struct selinux_state *state, bool value)
154{
155 if (value)
156 pr_err("SELinux: https://github.com/SELinuxProject/selinux-kernel/wiki/DEPRECATE-checkreqprot\n");
157 WRITE_ONCE(state->checkreqprot, value);
158}
159
160#ifdef CONFIG_SECURITY_SELINUX_DISABLE
161static inline bool selinux_disabled(struct selinux_state *state)
162{
163 return READ_ONCE(state->disabled);
164}
165
166static inline void selinux_mark_disabled(struct selinux_state *state)
167{
168 WRITE_ONCE(state->disabled, true);
169}
170#else
171static inline bool selinux_disabled(struct selinux_state *state)
172{
173 return false;
174}
175#endif
176
177static inline bool selinux_policycap_netpeer(void)
178{
179 struct selinux_state *state = &selinux_state;
180
181 return READ_ONCE(state->policycap[POLICYDB_CAP_NETPEER]);
182}
183
184static inline bool selinux_policycap_openperm(void)
185{
186 struct selinux_state *state = &selinux_state;
187
188 return READ_ONCE(state->policycap[POLICYDB_CAP_OPENPERM]);
189}
190
191static inline bool selinux_policycap_extsockclass(void)
192{
193 struct selinux_state *state = &selinux_state;
194
195 return READ_ONCE(state->policycap[POLICYDB_CAP_EXTSOCKCLASS]);
196}
197
198static inline bool selinux_policycap_alwaysnetwork(void)
199{
200 struct selinux_state *state = &selinux_state;
201
202 return READ_ONCE(state->policycap[POLICYDB_CAP_ALWAYSNETWORK]);
203}
204
205static inline bool selinux_policycap_cgroupseclabel(void)
206{
207 struct selinux_state *state = &selinux_state;
208
209 return READ_ONCE(state->policycap[POLICYDB_CAP_CGROUPSECLABEL]);
210}
211
212static inline bool selinux_policycap_nnp_nosuid_transition(void)
213{
214 struct selinux_state *state = &selinux_state;
215
216 return READ_ONCE(state->policycap[POLICYDB_CAP_NNP_NOSUID_TRANSITION]);
217}
218
219static inline bool selinux_policycap_genfs_seclabel_symlinks(void)
220{
221 struct selinux_state *state = &selinux_state;
222
223 return READ_ONCE(state->policycap[POLICYDB_CAP_GENFS_SECLABEL_SYMLINKS]);
224}
225
226static inline bool selinux_policycap_ioctl_skip_cloexec(void)
227{
228 struct selinux_state *state = &selinux_state;
229
230 return READ_ONCE(state->policycap[POLICYDB_CAP_IOCTL_SKIP_CLOEXEC]);
231}
232
233struct selinux_policy_convert_data;
234
235struct selinux_load_state {
236 struct selinux_policy *policy;
237 struct selinux_policy_convert_data *convert_data;
238};
239
240int security_mls_enabled(struct selinux_state *state);
241int security_load_policy(struct selinux_state *state,
242 void *data, size_t len,
243 struct selinux_load_state *load_state);
244void selinux_policy_commit(struct selinux_state *state,
245 struct selinux_load_state *load_state);
246void selinux_policy_cancel(struct selinux_state *state,
247 struct selinux_load_state *load_state);
248int security_read_policy(struct selinux_state *state,
249 void **data, size_t *len);
250int security_read_state_kernel(struct selinux_state *state,
251 void **data, size_t *len);
252int security_policycap_supported(struct selinux_state *state,
253 unsigned int req_cap);
254
255#define SEL_VEC_MAX 32
256struct av_decision {
257 u32 allowed;
258 u32 auditallow;
259 u32 auditdeny;
260 u32 seqno;
261 u32 flags;
262};
263
264#define XPERMS_ALLOWED 1
265#define XPERMS_AUDITALLOW 2
266#define XPERMS_DONTAUDIT 4
267
268#define security_xperm_set(perms, x) ((perms)[(x) >> 5] |= 1 << ((x) & 0x1f))
269#define security_xperm_test(perms, x) (1 & ((perms)[(x) >> 5] >> ((x) & 0x1f)))
270struct extended_perms_data {
271 u32 p[8];
272};
273
274struct extended_perms_decision {
275 u8 used;
276 u8 driver;
277 struct extended_perms_data *allowed;
278 struct extended_perms_data *auditallow;
279 struct extended_perms_data *dontaudit;
280};
281
282struct extended_perms {
283 u16 len; /* length associated decision chain */
284 struct extended_perms_data drivers; /* flag drivers that are used */
285};
286
287/* definitions of av_decision.flags */
288#define AVD_FLAGS_PERMISSIVE 0x0001
289
290void security_compute_av(struct selinux_state *state,
291 u32 ssid, u32 tsid,
292 u16 tclass, struct av_decision *avd,
293 struct extended_perms *xperms);
294
295void security_compute_xperms_decision(struct selinux_state *state,
296 u32 ssid, u32 tsid, u16 tclass,
297 u8 driver,
298 struct extended_perms_decision *xpermd);
299
300void security_compute_av_user(struct selinux_state *state,
301 u32 ssid, u32 tsid,
302 u16 tclass, struct av_decision *avd);
303
304int security_transition_sid(struct selinux_state *state,
305 u32 ssid, u32 tsid, u16 tclass,
306 const struct qstr *qstr, u32 *out_sid);
307
308int security_transition_sid_user(struct selinux_state *state,
309 u32 ssid, u32 tsid, u16 tclass,
310 const char *objname, u32 *out_sid);
311
312int security_member_sid(struct selinux_state *state, u32 ssid, u32 tsid,
313 u16 tclass, u32 *out_sid);
314
315int security_change_sid(struct selinux_state *state, u32 ssid, u32 tsid,
316 u16 tclass, u32 *out_sid);
317
318int security_sid_to_context(struct selinux_state *state, u32 sid,
319 char **scontext, u32 *scontext_len);
320
321int security_sid_to_context_force(struct selinux_state *state,
322 u32 sid, char **scontext, u32 *scontext_len);
323
324int security_sid_to_context_inval(struct selinux_state *state,
325 u32 sid, char **scontext, u32 *scontext_len);
326
327int security_context_to_sid(struct selinux_state *state,
328 const char *scontext, u32 scontext_len,
329 u32 *out_sid, gfp_t gfp);
330
331int security_context_str_to_sid(struct selinux_state *state,
332 const char *scontext, u32 *out_sid, gfp_t gfp);
333
334int security_context_to_sid_default(struct selinux_state *state,
335 const char *scontext, u32 scontext_len,
336 u32 *out_sid, u32 def_sid, gfp_t gfp_flags);
337
338int security_context_to_sid_force(struct selinux_state *state,
339 const char *scontext, u32 scontext_len,
340 u32 *sid);
341
342int security_get_user_sids(struct selinux_state *state,
343 u32 callsid, char *username,
344 u32 **sids, u32 *nel);
345
346int security_port_sid(struct selinux_state *state,
347 u8 protocol, u16 port, u32 *out_sid);
348
349int security_ib_pkey_sid(struct selinux_state *state,
350 u64 subnet_prefix, u16 pkey_num, u32 *out_sid);
351
352int security_ib_endport_sid(struct selinux_state *state,
353 const char *dev_name, u8 port_num, u32 *out_sid);
354
355int security_netif_sid(struct selinux_state *state,
356 char *name, u32 *if_sid);
357
358int security_node_sid(struct selinux_state *state,
359 u16 domain, void *addr, u32 addrlen,
360 u32 *out_sid);
361
362int security_validate_transition(struct selinux_state *state,
363 u32 oldsid, u32 newsid, u32 tasksid,
364 u16 tclass);
365
366int security_validate_transition_user(struct selinux_state *state,
367 u32 oldsid, u32 newsid, u32 tasksid,
368 u16 tclass);
369
370int security_bounded_transition(struct selinux_state *state,
371 u32 oldsid, u32 newsid);
372
373int security_sid_mls_copy(struct selinux_state *state,
374 u32 sid, u32 mls_sid, u32 *new_sid);
375
376int security_net_peersid_resolve(struct selinux_state *state,
377 u32 nlbl_sid, u32 nlbl_type,
378 u32 xfrm_sid,
379 u32 *peer_sid);
380
381int security_get_classes(struct selinux_policy *policy,
382 char ***classes, int *nclasses);
383int security_get_permissions(struct selinux_policy *policy,
384 char *class, char ***perms, int *nperms);
385int security_get_reject_unknown(struct selinux_state *state);
386int security_get_allow_unknown(struct selinux_state *state);
387
388#define SECURITY_FS_USE_XATTR 1 /* use xattr */
389#define SECURITY_FS_USE_TRANS 2 /* use transition SIDs, e.g. devpts/tmpfs */
390#define SECURITY_FS_USE_TASK 3 /* use task SIDs, e.g. pipefs/sockfs */
391#define SECURITY_FS_USE_GENFS 4 /* use the genfs support */
392#define SECURITY_FS_USE_NONE 5 /* no labeling support */
393#define SECURITY_FS_USE_MNTPOINT 6 /* use mountpoint labeling */
394#define SECURITY_FS_USE_NATIVE 7 /* use native label support */
395#define SECURITY_FS_USE_MAX 7 /* Highest SECURITY_FS_USE_XXX */
396
397int security_fs_use(struct selinux_state *state, struct super_block *sb);
398
399int security_genfs_sid(struct selinux_state *state,
400 const char *fstype, const char *path, u16 sclass,
401 u32 *sid);
402
403int selinux_policy_genfs_sid(struct selinux_policy *policy,
404 const char *fstype, const char *path, u16 sclass,
405 u32 *sid);
406
407#ifdef CONFIG_NETLABEL
408int security_netlbl_secattr_to_sid(struct selinux_state *state,
409 struct netlbl_lsm_secattr *secattr,
410 u32 *sid);
411
412int security_netlbl_sid_to_secattr(struct selinux_state *state,
413 u32 sid,
414 struct netlbl_lsm_secattr *secattr);
415#else
416static inline int security_netlbl_secattr_to_sid(struct selinux_state *state,
417 struct netlbl_lsm_secattr *secattr,
418 u32 *sid)
419{
420 return -EIDRM;
421}
422
423static inline int security_netlbl_sid_to_secattr(struct selinux_state *state,
424 u32 sid,
425 struct netlbl_lsm_secattr *secattr)
426{
427 return -ENOENT;
428}
429#endif /* CONFIG_NETLABEL */
430
431const char *security_get_initial_sid_context(u32 sid);
432
433/*
434 * status notifier using mmap interface
435 */
436extern struct page *selinux_kernel_status_page(struct selinux_state *state);
437
438#define SELINUX_KERNEL_STATUS_VERSION 1
439struct selinux_kernel_status {
440 u32 version; /* version number of the structure */
441 u32 sequence; /* sequence number of seqlock logic */
442 u32 enforcing; /* current setting of enforcing mode */
443 u32 policyload; /* times of policy reloaded */
444 u32 deny_unknown; /* current setting of deny_unknown */
445 /*
446 * The version > 0 supports above members.
447 */
448} __packed;
449
450extern void selinux_status_update_setenforce(struct selinux_state *state,
451 int enforcing);
452extern void selinux_status_update_policyload(struct selinux_state *state,
453 int seqno);
454extern void selinux_complete_init(void);
455extern int selinux_disable(struct selinux_state *state);
456extern void exit_sel_fs(void);
457extern struct path selinux_null;
458extern void selnl_notify_setenforce(int val);
459extern void selnl_notify_policyload(u32 seqno);
460extern int selinux_nlmsg_lookup(u16 sclass, u16 nlmsg_type, u32 *perm);
461
462extern void avtab_cache_init(void);
463extern void ebitmap_cache_init(void);
464extern void hashtab_cache_init(void);
465extern int security_sidtab_hash_stats(struct selinux_state *state, char *page);
466
467#endif /* _SELINUX_SECURITY_H_ */
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 <linux/compiler.h>
12#include <linux/dcache.h>
13#include <linux/magic.h>
14#include <linux/types.h>
15#include "flask.h"
16
17#define SECSID_NULL 0x00000000 /* unspecified SID */
18#define SECSID_WILD 0xffffffff /* wildcard SID */
19#define SECCLASS_NULL 0x0000 /* no class */
20
21/* Identify specific policy version changes */
22#define POLICYDB_VERSION_BASE 15
23#define POLICYDB_VERSION_BOOL 16
24#define POLICYDB_VERSION_IPV6 17
25#define POLICYDB_VERSION_NLCLASS 18
26#define POLICYDB_VERSION_VALIDATETRANS 19
27#define POLICYDB_VERSION_MLS 19
28#define POLICYDB_VERSION_AVTAB 20
29#define POLICYDB_VERSION_RANGETRANS 21
30#define POLICYDB_VERSION_POLCAP 22
31#define POLICYDB_VERSION_PERMISSIVE 23
32#define POLICYDB_VERSION_BOUNDARY 24
33#define POLICYDB_VERSION_FILENAME_TRANS 25
34#define POLICYDB_VERSION_ROLETRANS 26
35#define POLICYDB_VERSION_NEW_OBJECT_DEFAULTS 27
36#define POLICYDB_VERSION_DEFAULT_TYPE 28
37#define POLICYDB_VERSION_CONSTRAINT_NAMES 29
38#define POLICYDB_VERSION_XPERMS_IOCTL 30
39
40/* Range of policy versions we understand*/
41#define POLICYDB_VERSION_MIN POLICYDB_VERSION_BASE
42#define POLICYDB_VERSION_MAX POLICYDB_VERSION_XPERMS_IOCTL
43
44/* Mask for just the mount related flags */
45#define SE_MNTMASK 0x0f
46/* Super block security struct flags for mount options */
47/* BE CAREFUL, these need to be the low order bits for selinux_get_mnt_opts */
48#define CONTEXT_MNT 0x01
49#define FSCONTEXT_MNT 0x02
50#define ROOTCONTEXT_MNT 0x04
51#define DEFCONTEXT_MNT 0x08
52#define SBLABEL_MNT 0x10
53/* Non-mount related flags */
54#define SE_SBINITIALIZED 0x0100
55#define SE_SBPROC 0x0200
56#define SE_SBGENFS 0x0400
57
58#define CONTEXT_STR "context="
59#define FSCONTEXT_STR "fscontext="
60#define ROOTCONTEXT_STR "rootcontext="
61#define DEFCONTEXT_STR "defcontext="
62#define LABELSUPP_STR "seclabel"
63
64struct netlbl_lsm_secattr;
65
66extern int selinux_enabled;
67
68/* Policy capabilities */
69enum {
70 POLICYDB_CAPABILITY_NETPEER,
71 POLICYDB_CAPABILITY_OPENPERM,
72 POLICYDB_CAPABILITY_REDHAT1,
73 POLICYDB_CAPABILITY_ALWAYSNETWORK,
74 __POLICYDB_CAPABILITY_MAX
75};
76#define POLICYDB_CAPABILITY_MAX (__POLICYDB_CAPABILITY_MAX - 1)
77
78extern int selinux_policycap_netpeer;
79extern int selinux_policycap_openperm;
80extern int selinux_policycap_alwaysnetwork;
81
82/*
83 * type_datum properties
84 * available at the kernel policy version >= POLICYDB_VERSION_BOUNDARY
85 */
86#define TYPEDATUM_PROPERTY_PRIMARY 0x0001
87#define TYPEDATUM_PROPERTY_ATTRIBUTE 0x0002
88
89/* limitation of boundary depth */
90#define POLICYDB_BOUNDS_MAXDEPTH 4
91
92int security_mls_enabled(void);
93
94int security_load_policy(void *data, size_t len);
95int security_read_policy(void **data, size_t *len);
96size_t security_policydb_len(void);
97
98int security_policycap_supported(unsigned int req_cap);
99
100#define SEL_VEC_MAX 32
101struct av_decision {
102 u32 allowed;
103 u32 auditallow;
104 u32 auditdeny;
105 u32 seqno;
106 u32 flags;
107};
108
109#define XPERMS_ALLOWED 1
110#define XPERMS_AUDITALLOW 2
111#define XPERMS_DONTAUDIT 4
112
113#define security_xperm_set(perms, x) (perms[x >> 5] |= 1 << (x & 0x1f))
114#define security_xperm_test(perms, x) (1 & (perms[x >> 5] >> (x & 0x1f)))
115struct extended_perms_data {
116 u32 p[8];
117};
118
119struct extended_perms_decision {
120 u8 used;
121 u8 driver;
122 struct extended_perms_data *allowed;
123 struct extended_perms_data *auditallow;
124 struct extended_perms_data *dontaudit;
125};
126
127struct extended_perms {
128 u16 len; /* length associated decision chain */
129 struct extended_perms_data drivers; /* flag drivers that are used */
130};
131
132/* definitions of av_decision.flags */
133#define AVD_FLAGS_PERMISSIVE 0x0001
134
135void security_compute_av(u32 ssid, u32 tsid,
136 u16 tclass, struct av_decision *avd,
137 struct extended_perms *xperms);
138
139void security_compute_xperms_decision(u32 ssid, u32 tsid, u16 tclass,
140 u8 driver, struct extended_perms_decision *xpermd);
141
142void security_compute_av_user(u32 ssid, u32 tsid,
143 u16 tclass, struct av_decision *avd);
144
145int security_transition_sid(u32 ssid, u32 tsid, u16 tclass,
146 const struct qstr *qstr, u32 *out_sid);
147
148int security_transition_sid_user(u32 ssid, u32 tsid, u16 tclass,
149 const char *objname, u32 *out_sid);
150
151int security_member_sid(u32 ssid, u32 tsid,
152 u16 tclass, u32 *out_sid);
153
154int security_change_sid(u32 ssid, u32 tsid,
155 u16 tclass, u32 *out_sid);
156
157int security_sid_to_context(u32 sid, char **scontext,
158 u32 *scontext_len);
159
160int security_sid_to_context_force(u32 sid, char **scontext, u32 *scontext_len);
161
162int security_context_to_sid(const char *scontext, u32 scontext_len,
163 u32 *out_sid, gfp_t gfp);
164
165int security_context_str_to_sid(const char *scontext, u32 *out_sid, gfp_t gfp);
166
167int security_context_to_sid_default(const char *scontext, u32 scontext_len,
168 u32 *out_sid, u32 def_sid, gfp_t gfp_flags);
169
170int security_context_to_sid_force(const char *scontext, u32 scontext_len,
171 u32 *sid);
172
173int security_get_user_sids(u32 callsid, char *username,
174 u32 **sids, u32 *nel);
175
176int security_port_sid(u8 protocol, u16 port, u32 *out_sid);
177
178int security_netif_sid(char *name, u32 *if_sid);
179
180int security_node_sid(u16 domain, void *addr, u32 addrlen,
181 u32 *out_sid);
182
183int security_validate_transition(u32 oldsid, u32 newsid, u32 tasksid,
184 u16 tclass);
185
186int security_validate_transition_user(u32 oldsid, u32 newsid, u32 tasksid,
187 u16 tclass);
188
189int security_bounded_transition(u32 oldsid, u32 newsid);
190
191int security_sid_mls_copy(u32 sid, u32 mls_sid, u32 *new_sid);
192
193int security_net_peersid_resolve(u32 nlbl_sid, u32 nlbl_type,
194 u32 xfrm_sid,
195 u32 *peer_sid);
196
197int security_get_classes(char ***classes, int *nclasses);
198int security_get_permissions(char *class, char ***perms, int *nperms);
199int security_get_reject_unknown(void);
200int security_get_allow_unknown(void);
201
202#define SECURITY_FS_USE_XATTR 1 /* use xattr */
203#define SECURITY_FS_USE_TRANS 2 /* use transition SIDs, e.g. devpts/tmpfs */
204#define SECURITY_FS_USE_TASK 3 /* use task SIDs, e.g. pipefs/sockfs */
205#define SECURITY_FS_USE_GENFS 4 /* use the genfs support */
206#define SECURITY_FS_USE_NONE 5 /* no labeling support */
207#define SECURITY_FS_USE_MNTPOINT 6 /* use mountpoint labeling */
208#define SECURITY_FS_USE_NATIVE 7 /* use native label support */
209#define SECURITY_FS_USE_MAX 7 /* Highest SECURITY_FS_USE_XXX */
210
211int security_fs_use(struct super_block *sb);
212
213int security_genfs_sid(const char *fstype, char *name, u16 sclass,
214 u32 *sid);
215
216#ifdef CONFIG_NETLABEL
217int security_netlbl_secattr_to_sid(struct netlbl_lsm_secattr *secattr,
218 u32 *sid);
219
220int security_netlbl_sid_to_secattr(u32 sid,
221 struct netlbl_lsm_secattr *secattr);
222#else
223static inline int security_netlbl_secattr_to_sid(
224 struct netlbl_lsm_secattr *secattr,
225 u32 *sid)
226{
227 return -EIDRM;
228}
229
230static inline int security_netlbl_sid_to_secattr(u32 sid,
231 struct netlbl_lsm_secattr *secattr)
232{
233 return -ENOENT;
234}
235#endif /* CONFIG_NETLABEL */
236
237const char *security_get_initial_sid_context(u32 sid);
238
239/*
240 * status notifier using mmap interface
241 */
242extern struct page *selinux_kernel_status_page(void);
243
244#define SELINUX_KERNEL_STATUS_VERSION 1
245struct selinux_kernel_status {
246 u32 version; /* version number of thie structure */
247 u32 sequence; /* sequence number of seqlock logic */
248 u32 enforcing; /* current setting of enforcing mode */
249 u32 policyload; /* times of policy reloaded */
250 u32 deny_unknown; /* current setting of deny_unknown */
251 /*
252 * The version > 0 supports above members.
253 */
254} __packed;
255
256extern void selinux_status_update_setenforce(int enforcing);
257extern void selinux_status_update_policyload(int seqno);
258extern void selinux_complete_init(void);
259extern int selinux_disable(void);
260extern void exit_sel_fs(void);
261extern struct path selinux_null;
262extern struct vfsmount *selinuxfs_mount;
263extern void selnl_notify_setenforce(int val);
264extern void selnl_notify_policyload(u32 seqno);
265extern int selinux_nlmsg_lookup(u16 sclass, u16 nlmsg_type, u32 *perm);
266
267#endif /* _SELINUX_SECURITY_H_ */
268