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v5.9
  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/refcount.h>
 17#include <linux/workqueue.h>
 18#include "flask.h"
 19
 20#define SECSID_NULL			0x00000000 /* unspecified SID */
 21#define SECSID_WILD			0xffffffff /* wildcard SID */
 22#define SECCLASS_NULL			0x0000 /* no class */
 23
 24/* Identify specific policy version changes */
 25#define POLICYDB_VERSION_BASE		15
 26#define POLICYDB_VERSION_BOOL		16
 27#define POLICYDB_VERSION_IPV6		17
 28#define POLICYDB_VERSION_NLCLASS	18
 29#define POLICYDB_VERSION_VALIDATETRANS	19
 30#define POLICYDB_VERSION_MLS		19
 31#define POLICYDB_VERSION_AVTAB		20
 32#define POLICYDB_VERSION_RANGETRANS	21
 33#define POLICYDB_VERSION_POLCAP		22
 34#define POLICYDB_VERSION_PERMISSIVE	23
 35#define POLICYDB_VERSION_BOUNDARY	24
 36#define POLICYDB_VERSION_FILENAME_TRANS	25
 37#define POLICYDB_VERSION_ROLETRANS	26
 38#define POLICYDB_VERSION_NEW_OBJECT_DEFAULTS	27
 39#define POLICYDB_VERSION_DEFAULT_TYPE	28
 40#define POLICYDB_VERSION_CONSTRAINT_NAMES	29
 41#define POLICYDB_VERSION_XPERMS_IOCTL	30
 42#define POLICYDB_VERSION_INFINIBAND		31
 43#define POLICYDB_VERSION_GLBLUB		32
 44#define POLICYDB_VERSION_COMP_FTRANS	33 /* compressed filename transitions */
 45
 46/* Range of policy versions we understand*/
 47#define POLICYDB_VERSION_MIN   POLICYDB_VERSION_BASE
 48#define POLICYDB_VERSION_MAX   POLICYDB_VERSION_COMP_FTRANS
 
 
 
 
 49
 50/* Mask for just the mount related flags */
 51#define SE_MNTMASK	0x0f
 52/* Super block security struct flags for mount options */
 53/* BE CAREFUL, these need to be the low order bits for selinux_get_mnt_opts */
 54#define CONTEXT_MNT	0x01
 55#define FSCONTEXT_MNT	0x02
 56#define ROOTCONTEXT_MNT	0x04
 57#define DEFCONTEXT_MNT	0x08
 58#define SBLABEL_MNT	0x10
 59/* Non-mount related flags */
 60#define SE_SBINITIALIZED	0x0100
 61#define SE_SBPROC		0x0200
 62#define SE_SBGENFS		0x0400
 63#define SE_SBGENFS_XATTR	0x0800
 64
 65#define CONTEXT_STR	"context"
 66#define FSCONTEXT_STR	"fscontext"
 67#define ROOTCONTEXT_STR	"rootcontext"
 68#define DEFCONTEXT_STR	"defcontext"
 69#define SECLABEL_STR "seclabel"
 70
 71struct netlbl_lsm_secattr;
 72
 73extern int selinux_enabled_boot;
 74
 75/* Policy capabilities */
 76enum {
 77	POLICYDB_CAPABILITY_NETPEER,
 78	POLICYDB_CAPABILITY_OPENPERM,
 79	POLICYDB_CAPABILITY_EXTSOCKCLASS,
 80	POLICYDB_CAPABILITY_ALWAYSNETWORK,
 81	POLICYDB_CAPABILITY_CGROUPSECLABEL,
 82	POLICYDB_CAPABILITY_NNP_NOSUID_TRANSITION,
 83	POLICYDB_CAPABILITY_GENFS_SECLABEL_SYMLINKS,
 84	__POLICYDB_CAPABILITY_MAX
 85};
 86#define POLICYDB_CAPABILITY_MAX (__POLICYDB_CAPABILITY_MAX - 1)
 87
 88extern const char *selinux_policycap_names[__POLICYDB_CAPABILITY_MAX];
 
 89
 90/*
 91 * type_datum properties
 92 * available at the kernel policy version >= POLICYDB_VERSION_BOUNDARY
 93 */
 94#define TYPEDATUM_PROPERTY_PRIMARY	0x0001
 95#define TYPEDATUM_PROPERTY_ATTRIBUTE	0x0002
 96
 97/* limitation of boundary depth  */
 98#define POLICYDB_BOUNDS_MAXDEPTH	4
 99
100struct selinux_avc;
101struct selinux_ss;
102
103struct selinux_state {
104#ifdef CONFIG_SECURITY_SELINUX_DISABLE
105	bool disabled;
106#endif
107#ifdef CONFIG_SECURITY_SELINUX_DEVELOP
108	bool enforcing;
109#endif
110	bool checkreqprot;
111	bool initialized;
112	bool policycap[__POLICYDB_CAPABILITY_MAX];
113
114	struct page *status_page;
115	struct mutex status_lock;
116
117	struct selinux_avc *avc;
118	struct selinux_ss *ss;
119} __randomize_layout;
120
121void selinux_ss_init(struct selinux_ss **ss);
122void selinux_avc_init(struct selinux_avc **avc);
123
124extern struct selinux_state selinux_state;
125
126static inline bool selinux_initialized(const struct selinux_state *state)
127{
128	/* do a synchronized load to avoid race conditions */
129	return smp_load_acquire(&state->initialized);
130}
131
132static inline void selinux_mark_initialized(struct selinux_state *state)
133{
134	/* do a synchronized write to avoid race conditions */
135	smp_store_release(&state->initialized, true);
136}
137
138#ifdef CONFIG_SECURITY_SELINUX_DEVELOP
139static inline bool enforcing_enabled(struct selinux_state *state)
140{
141	return READ_ONCE(state->enforcing);
142}
143
144static inline void enforcing_set(struct selinux_state *state, bool value)
145{
146	WRITE_ONCE(state->enforcing, value);
147}
148#else
149static inline bool enforcing_enabled(struct selinux_state *state)
150{
151	return true;
152}
153
154static inline void enforcing_set(struct selinux_state *state, bool value)
155{
156}
157#endif
158
159#ifdef CONFIG_SECURITY_SELINUX_DISABLE
160static inline bool selinux_disabled(struct selinux_state *state)
161{
162	return READ_ONCE(state->disabled);
163}
164
165static inline void selinux_mark_disabled(struct selinux_state *state)
166{
167	WRITE_ONCE(state->disabled, true);
168}
169#else
170static inline bool selinux_disabled(struct selinux_state *state)
171{
172	return false;
173}
174#endif
175
176static inline bool selinux_policycap_netpeer(void)
177{
178	struct selinux_state *state = &selinux_state;
179
180	return state->policycap[POLICYDB_CAPABILITY_NETPEER];
181}
182
183static inline bool selinux_policycap_openperm(void)
184{
185	struct selinux_state *state = &selinux_state;
186
187	return state->policycap[POLICYDB_CAPABILITY_OPENPERM];
188}
189
190static inline bool selinux_policycap_extsockclass(void)
191{
192	struct selinux_state *state = &selinux_state;
193
194	return state->policycap[POLICYDB_CAPABILITY_EXTSOCKCLASS];
195}
196
197static inline bool selinux_policycap_alwaysnetwork(void)
198{
199	struct selinux_state *state = &selinux_state;
200
201	return state->policycap[POLICYDB_CAPABILITY_ALWAYSNETWORK];
202}
203
204static inline bool selinux_policycap_cgroupseclabel(void)
205{
206	struct selinux_state *state = &selinux_state;
207
208	return state->policycap[POLICYDB_CAPABILITY_CGROUPSECLABEL];
209}
210
211static inline bool selinux_policycap_nnp_nosuid_transition(void)
212{
213	struct selinux_state *state = &selinux_state;
214
215	return state->policycap[POLICYDB_CAPABILITY_NNP_NOSUID_TRANSITION];
216}
217
218static inline bool selinux_policycap_genfs_seclabel_symlinks(void)
219{
220	struct selinux_state *state = &selinux_state;
221
222	return state->policycap[POLICYDB_CAPABILITY_GENFS_SECLABEL_SYMLINKS];
223}
224
225int security_mls_enabled(struct selinux_state *state);
226int security_load_policy(struct selinux_state *state,
227			 void *data, size_t len);
228int security_read_policy(struct selinux_state *state,
229			 void **data, size_t *len);
230size_t security_policydb_len(struct selinux_state *state);
231
232int security_policycap_supported(struct selinux_state *state,
233				 unsigned int req_cap);
234
235#define SEL_VEC_MAX 32
236struct av_decision {
237	u32 allowed;
238	u32 auditallow;
239	u32 auditdeny;
240	u32 seqno;
241	u32 flags;
242};
243
244#define XPERMS_ALLOWED 1
245#define XPERMS_AUDITALLOW 2
246#define XPERMS_DONTAUDIT 4
247
248#define security_xperm_set(perms, x) (perms[x >> 5] |= 1 << (x & 0x1f))
249#define security_xperm_test(perms, x) (1 & (perms[x >> 5] >> (x & 0x1f)))
250struct extended_perms_data {
251	u32 p[8];
252};
253
254struct extended_perms_decision {
255	u8 used;
256	u8 driver;
257	struct extended_perms_data *allowed;
258	struct extended_perms_data *auditallow;
259	struct extended_perms_data *dontaudit;
260};
261
262struct extended_perms {
263	u16 len;	/* length associated decision chain */
264	struct extended_perms_data drivers; /* flag drivers that are used */
265};
266
267/* definitions of av_decision.flags */
268#define AVD_FLAGS_PERMISSIVE	0x0001
269
270void security_compute_av(struct selinux_state *state,
271			 u32 ssid, u32 tsid,
272			 u16 tclass, struct av_decision *avd,
273			 struct extended_perms *xperms);
274
275void security_compute_xperms_decision(struct selinux_state *state,
276				      u32 ssid, u32 tsid, u16 tclass,
277				      u8 driver,
278				      struct extended_perms_decision *xpermd);
279
280void security_compute_av_user(struct selinux_state *state,
281			      u32 ssid, u32 tsid,
282			      u16 tclass, struct av_decision *avd);
283
284int security_transition_sid(struct selinux_state *state,
285			    u32 ssid, u32 tsid, u16 tclass,
286			    const struct qstr *qstr, u32 *out_sid);
287
288int security_transition_sid_user(struct selinux_state *state,
289				 u32 ssid, u32 tsid, u16 tclass,
290				 const char *objname, u32 *out_sid);
291
292int security_member_sid(struct selinux_state *state, u32 ssid, u32 tsid,
293			u16 tclass, u32 *out_sid);
294
295int security_change_sid(struct selinux_state *state, u32 ssid, u32 tsid,
296			u16 tclass, u32 *out_sid);
297
298int security_sid_to_context(struct selinux_state *state, u32 sid,
299			    char **scontext, u32 *scontext_len);
300
301int security_sid_to_context_force(struct selinux_state *state,
302				  u32 sid, char **scontext, u32 *scontext_len);
303
304int security_sid_to_context_inval(struct selinux_state *state,
305				  u32 sid, char **scontext, u32 *scontext_len);
306
307int security_context_to_sid(struct selinux_state *state,
308			    const char *scontext, u32 scontext_len,
309			    u32 *out_sid, gfp_t gfp);
310
311int security_context_str_to_sid(struct selinux_state *state,
312				const char *scontext, u32 *out_sid, gfp_t gfp);
313
314int security_context_to_sid_default(struct selinux_state *state,
315				    const char *scontext, u32 scontext_len,
316				    u32 *out_sid, u32 def_sid, gfp_t gfp_flags);
317
318int security_context_to_sid_force(struct selinux_state *state,
319				  const char *scontext, u32 scontext_len,
320				  u32 *sid);
321
322int security_get_user_sids(struct selinux_state *state,
323			   u32 callsid, char *username,
324			   u32 **sids, u32 *nel);
325
326int security_port_sid(struct selinux_state *state,
327		      u8 protocol, u16 port, u32 *out_sid);
328
329int security_ib_pkey_sid(struct selinux_state *state,
330			 u64 subnet_prefix, u16 pkey_num, u32 *out_sid);
331
332int security_ib_endport_sid(struct selinux_state *state,
333			    const char *dev_name, u8 port_num, u32 *out_sid);
334
335int security_netif_sid(struct selinux_state *state,
336		       char *name, u32 *if_sid);
337
338int security_node_sid(struct selinux_state *state,
339		      u16 domain, void *addr, u32 addrlen,
340		      u32 *out_sid);
341
342int security_validate_transition(struct selinux_state *state,
343				 u32 oldsid, u32 newsid, u32 tasksid,
344				 u16 tclass);
345
346int security_validate_transition_user(struct selinux_state *state,
347				      u32 oldsid, u32 newsid, u32 tasksid,
348				      u16 tclass);
349
350int security_bounded_transition(struct selinux_state *state,
351				u32 oldsid, u32 newsid);
352
353int security_sid_mls_copy(struct selinux_state *state,
354			  u32 sid, u32 mls_sid, u32 *new_sid);
355
356int security_net_peersid_resolve(struct selinux_state *state,
357				 u32 nlbl_sid, u32 nlbl_type,
358				 u32 xfrm_sid,
359				 u32 *peer_sid);
360
361int security_get_classes(struct selinux_state *state,
362			 char ***classes, int *nclasses);
363int security_get_permissions(struct selinux_state *state,
364			     char *class, char ***perms, int *nperms);
365int security_get_reject_unknown(struct selinux_state *state);
366int security_get_allow_unknown(struct selinux_state *state);
367
368#define SECURITY_FS_USE_XATTR		1 /* use xattr */
369#define SECURITY_FS_USE_TRANS		2 /* use transition SIDs, e.g. devpts/tmpfs */
370#define SECURITY_FS_USE_TASK		3 /* use task SIDs, e.g. pipefs/sockfs */
371#define SECURITY_FS_USE_GENFS		4 /* use the genfs support */
372#define SECURITY_FS_USE_NONE		5 /* no labeling support */
373#define SECURITY_FS_USE_MNTPOINT	6 /* use mountpoint labeling */
374#define SECURITY_FS_USE_NATIVE		7 /* use native label support */
375#define SECURITY_FS_USE_MAX		7 /* Highest SECURITY_FS_USE_XXX */
376
377int security_fs_use(struct selinux_state *state, struct super_block *sb);
 
378
379int security_genfs_sid(struct selinux_state *state,
380		       const char *fstype, char *name, u16 sclass,
381		       u32 *sid);
382
383#ifdef CONFIG_NETLABEL
384int security_netlbl_secattr_to_sid(struct selinux_state *state,
385				   struct netlbl_lsm_secattr *secattr,
386				   u32 *sid);
387
388int security_netlbl_sid_to_secattr(struct selinux_state *state,
389				   u32 sid,
390				   struct netlbl_lsm_secattr *secattr);
391#else
392static inline int security_netlbl_secattr_to_sid(struct selinux_state *state,
393					    struct netlbl_lsm_secattr *secattr,
394					    u32 *sid)
395{
396	return -EIDRM;
397}
398
399static inline int security_netlbl_sid_to_secattr(struct selinux_state *state,
400					 u32 sid,
401					 struct netlbl_lsm_secattr *secattr)
402{
403	return -ENOENT;
404}
405#endif /* CONFIG_NETLABEL */
406
407const char *security_get_initial_sid_context(u32 sid);
408
409/*
410 * status notifier using mmap interface
411 */
412extern struct page *selinux_kernel_status_page(struct selinux_state *state);
413
414#define SELINUX_KERNEL_STATUS_VERSION	1
415struct selinux_kernel_status {
416	u32	version;	/* version number of thie structure */
417	u32	sequence;	/* sequence number of seqlock logic */
418	u32	enforcing;	/* current setting of enforcing mode */
419	u32	policyload;	/* times of policy reloaded */
420	u32	deny_unknown;	/* current setting of deny_unknown */
421	/*
422	 * The version > 0 supports above members.
423	 */
424} __packed;
425
426extern void selinux_status_update_setenforce(struct selinux_state *state,
427					     int enforcing);
428extern void selinux_status_update_policyload(struct selinux_state *state,
429					     int seqno);
430extern void selinux_complete_init(void);
431extern int selinux_disable(struct selinux_state *state);
432extern void exit_sel_fs(void);
433extern struct path selinux_null;
434extern struct vfsmount *selinuxfs_mount;
435extern void selnl_notify_setenforce(int val);
436extern void selnl_notify_policyload(u32 seqno);
437extern int selinux_nlmsg_lookup(u16 sclass, u16 nlmsg_type, u32 *perm);
438
439extern void avtab_cache_init(void);
440extern void ebitmap_cache_init(void);
441extern void hashtab_cache_init(void);
442extern int security_sidtab_hash_stats(struct selinux_state *state, char *page);
443
444#endif /* _SELINUX_SECURITY_H_ */
v3.1
 
  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/dcache.h>
 12#include <linux/magic.h>
 13#include <linux/types.h>
 
 
 14#include "flask.h"
 15
 16#define SECSID_NULL			0x00000000 /* unspecified SID */
 17#define SECSID_WILD			0xffffffff /* wildcard SID */
 18#define SECCLASS_NULL			0x0000 /* no class */
 19
 20/* Identify specific policy version changes */
 21#define POLICYDB_VERSION_BASE		15
 22#define POLICYDB_VERSION_BOOL		16
 23#define POLICYDB_VERSION_IPV6		17
 24#define POLICYDB_VERSION_NLCLASS	18
 25#define POLICYDB_VERSION_VALIDATETRANS	19
 26#define POLICYDB_VERSION_MLS		19
 27#define POLICYDB_VERSION_AVTAB		20
 28#define POLICYDB_VERSION_RANGETRANS	21
 29#define POLICYDB_VERSION_POLCAP		22
 30#define POLICYDB_VERSION_PERMISSIVE	23
 31#define POLICYDB_VERSION_BOUNDARY	24
 32#define POLICYDB_VERSION_FILENAME_TRANS	25
 33#define POLICYDB_VERSION_ROLETRANS	26
 
 
 
 
 
 
 
 34
 35/* Range of policy versions we understand*/
 36#define POLICYDB_VERSION_MIN   POLICYDB_VERSION_BASE
 37#ifdef CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX
 38#define POLICYDB_VERSION_MAX	CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX_VALUE
 39#else
 40#define POLICYDB_VERSION_MAX	POLICYDB_VERSION_ROLETRANS
 41#endif
 42
 43/* Mask for just the mount related flags */
 44#define SE_MNTMASK	0x0f
 45/* Super block security struct flags for mount options */
 
 46#define CONTEXT_MNT	0x01
 47#define FSCONTEXT_MNT	0x02
 48#define ROOTCONTEXT_MNT	0x04
 49#define DEFCONTEXT_MNT	0x08
 
 50/* Non-mount related flags */
 51#define SE_SBINITIALIZED	0x10
 52#define SE_SBPROC		0x20
 53#define SE_SBLABELSUPP	0x40
 54
 55#define CONTEXT_STR	"context="
 56#define FSCONTEXT_STR	"fscontext="
 57#define ROOTCONTEXT_STR	"rootcontext="
 58#define DEFCONTEXT_STR	"defcontext="
 59#define LABELSUPP_STR "seclabel"
 
 60
 61struct netlbl_lsm_secattr;
 62
 63extern int selinux_enabled;
 64
 65/* Policy capabilities */
 66enum {
 67	POLICYDB_CAPABILITY_NETPEER,
 68	POLICYDB_CAPABILITY_OPENPERM,
 
 
 
 
 
 69	__POLICYDB_CAPABILITY_MAX
 70};
 71#define POLICYDB_CAPABILITY_MAX (__POLICYDB_CAPABILITY_MAX - 1)
 72
 73extern int selinux_policycap_netpeer;
 74extern int selinux_policycap_openperm;
 75
 76/*
 77 * type_datum properties
 78 * available at the kernel policy version >= POLICYDB_VERSION_BOUNDARY
 79 */
 80#define TYPEDATUM_PROPERTY_PRIMARY	0x0001
 81#define TYPEDATUM_PROPERTY_ATTRIBUTE	0x0002
 82
 83/* limitation of boundary depth  */
 84#define POLICYDB_BOUNDS_MAXDEPTH	4
 85
 86int security_mls_enabled(void);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 87
 88int security_load_policy(void *data, size_t len);
 89int security_read_policy(void **data, size_t *len);
 90size_t security_policydb_len(void);
 91
 92int security_policycap_supported(unsigned int req_cap);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 93
 94#define SEL_VEC_MAX 32
 95struct av_decision {
 96	u32 allowed;
 97	u32 auditallow;
 98	u32 auditdeny;
 99	u32 seqno;
100	u32 flags;
101};
102
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
103/* definitions of av_decision.flags */
104#define AVD_FLAGS_PERMISSIVE	0x0001
105
106void security_compute_av(u32 ssid, u32 tsid,
107			 u16 tclass, struct av_decision *avd);
108
109void security_compute_av_user(u32 ssid, u32 tsid,
110			     u16 tclass, struct av_decision *avd);
 
 
 
 
 
 
 
 
111
112int security_transition_sid(u32 ssid, u32 tsid, u16 tclass,
 
113			    const struct qstr *qstr, u32 *out_sid);
114
115int security_transition_sid_user(u32 ssid, u32 tsid, u16 tclass,
 
116				 const char *objname, u32 *out_sid);
117
118int security_member_sid(u32 ssid, u32 tsid,
119	u16 tclass, u32 *out_sid);
 
 
 
 
 
 
120
121int security_change_sid(u32 ssid, u32 tsid,
122	u16 tclass, u32 *out_sid);
123
124int security_sid_to_context(u32 sid, char **scontext,
125	u32 *scontext_len);
126
127int security_sid_to_context_force(u32 sid, char **scontext, u32 *scontext_len);
 
 
128
129int security_context_to_sid(const char *scontext, u32 scontext_len,
130	u32 *out_sid);
131
132int security_context_to_sid_default(const char *scontext, u32 scontext_len,
 
133				    u32 *out_sid, u32 def_sid, gfp_t gfp_flags);
134
135int security_context_to_sid_force(const char *scontext, u32 scontext_len,
 
136				  u32 *sid);
137
138int security_get_user_sids(u32 callsid, char *username,
 
139			   u32 **sids, u32 *nel);
140
141int security_port_sid(u8 protocol, u16 port, u32 *out_sid);
 
142
143int security_netif_sid(char *name, u32 *if_sid);
 
144
145int security_node_sid(u16 domain, void *addr, u32 addrlen,
146	u32 *out_sid);
147
148int security_validate_transition(u32 oldsid, u32 newsid, u32 tasksid,
 
 
 
 
 
 
 
 
149				 u16 tclass);
150
151int security_bounded_transition(u32 oldsid, u32 newsid);
 
 
152
153int security_sid_mls_copy(u32 sid, u32 mls_sid, u32 *new_sid);
 
154
155int security_net_peersid_resolve(u32 nlbl_sid, u32 nlbl_type,
 
 
 
 
156				 u32 xfrm_sid,
157				 u32 *peer_sid);
158
159int security_get_classes(char ***classes, int *nclasses);
160int security_get_permissions(char *class, char ***perms, int *nperms);
161int security_get_reject_unknown(void);
162int security_get_allow_unknown(void);
 
 
163
164#define SECURITY_FS_USE_XATTR		1 /* use xattr */
165#define SECURITY_FS_USE_TRANS		2 /* use transition SIDs, e.g. devpts/tmpfs */
166#define SECURITY_FS_USE_TASK		3 /* use task SIDs, e.g. pipefs/sockfs */
167#define SECURITY_FS_USE_GENFS		4 /* use the genfs support */
168#define SECURITY_FS_USE_NONE		5 /* no labeling support */
169#define SECURITY_FS_USE_MNTPOINT	6 /* use mountpoint labeling */
 
 
170
171int security_fs_use(const char *fstype, unsigned int *behavior,
172	u32 *sid);
173
174int security_genfs_sid(const char *fstype, char *name, u16 sclass,
175	u32 *sid);
 
176
177#ifdef CONFIG_NETLABEL
178int security_netlbl_secattr_to_sid(struct netlbl_lsm_secattr *secattr,
 
179				   u32 *sid);
180
181int security_netlbl_sid_to_secattr(u32 sid,
 
182				   struct netlbl_lsm_secattr *secattr);
183#else
184static inline int security_netlbl_secattr_to_sid(
185					    struct netlbl_lsm_secattr *secattr,
186					    u32 *sid)
187{
188	return -EIDRM;
189}
190
191static inline int security_netlbl_sid_to_secattr(u32 sid,
192					   struct netlbl_lsm_secattr *secattr)
 
193{
194	return -ENOENT;
195}
196#endif /* CONFIG_NETLABEL */
197
198const char *security_get_initial_sid_context(u32 sid);
199
200/*
201 * status notifier using mmap interface
202 */
203extern struct page *selinux_kernel_status_page(void);
204
205#define SELINUX_KERNEL_STATUS_VERSION	1
206struct selinux_kernel_status {
207	u32	version;	/* version number of thie structure */
208	u32	sequence;	/* sequence number of seqlock logic */
209	u32	enforcing;	/* current setting of enforcing mode */
210	u32	policyload;	/* times of policy reloaded */
211	u32	deny_unknown;	/* current setting of deny_unknown */
212	/*
213	 * The version > 0 supports above members.
214	 */
215} __attribute__((packed));
216
217extern void selinux_status_update_setenforce(int enforcing);
218extern void selinux_status_update_policyload(int seqno);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
219
220#endif /* _SELINUX_SECURITY_H_ */
221