2 * Access vector cache interface for object managers.
4 * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
6 #ifndef _SELINUX_AVC_H_
7 #define _SELINUX_AVC_H_
9 #include <linux/stddef.h>
10 #include <linux/errno.h>
11 #include <linux/kernel.h>
12 #include <linux/kdev_t.h>
13 #include <linux/spinlock.h>
14 #include <linux/init.h>
15 #include <linux/audit.h>
16 #include <linux/lsm_audit.h>
17 #include <linux/in6.h>
18 #include <asm/system.h>
20 #include "av_permissions.h"
23 #ifdef CONFIG_SECURITY_SELINUX_DEVELOP
24 extern int selinux_enforcing;
26 #define selinux_enforcing 1
30 * An entry in the AVC.
42 struct avc_cache_stats {
46 unsigned int allocations;
47 unsigned int reclaims;
55 void __init avc_init(void);
57 void avc_audit(u32 ssid, u32 tsid,
58 u16 tclass, u32 requested,
59 struct av_decision *avd,
61 struct common_audit_data *a);
63 #define AVC_STRICT 1 /* Ignore permissive mode. */
64 int avc_has_perm_noaudit(u32 ssid, u32 tsid,
65 u16 tclass, u32 requested,
67 struct av_decision *avd);
69 int avc_has_perm(u32 ssid, u32 tsid,
70 u16 tclass, u32 requested,
71 struct common_audit_data *auditdata);
73 u32 avc_policy_seqno(void);
75 #define AVC_CALLBACK_GRANT 1
76 #define AVC_CALLBACK_TRY_REVOKE 2
77 #define AVC_CALLBACK_REVOKE 4
78 #define AVC_CALLBACK_RESET 8
79 #define AVC_CALLBACK_AUDITALLOW_ENABLE 16
80 #define AVC_CALLBACK_AUDITALLOW_DISABLE 32
81 #define AVC_CALLBACK_AUDITDENY_ENABLE 64
82 #define AVC_CALLBACK_AUDITDENY_DISABLE 128
84 int avc_add_callback(int (*callback)(u32 event, u32 ssid, u32 tsid,
85 u16 tclass, u32 perms,
87 u32 events, u32 ssid, u32 tsid,
88 u16 tclass, u32 perms);
90 /* Exported to selinuxfs */
91 int avc_get_hash_stats(char *page);
92 extern unsigned int avc_cache_threshold;
94 /* Attempt to free avc node cache */
95 void avc_disable(void);
97 #ifdef CONFIG_SECURITY_SELINUX_AVC_STATS
98 DECLARE_PER_CPU(struct avc_cache_stats, avc_cache_stats);
101 #endif /* _SELINUX_AVC_H_ */