tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Access vector cache interface for object managers.
3 *
4 * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
5 */
6#ifndef _SELINUX_AVC_H_
7#define _SELINUX_AVC_H_
8
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>
19#include "flask.h"
20#include "av_permissions.h"
21#include "security.h"
22
23#ifdef CONFIG_SECURITY_SELINUX_DEVELOP
24extern int selinux_enforcing;
25#else
26#define selinux_enforcing 1
27#endif
28
29/*
30 * An entry in the AVC.
31 */
32struct avc_entry;
33
34struct task_struct;
35struct inode;
36struct sock;
37struct sk_buff;
38
39/*
40 * AVC statistics
41 */
42struct avc_cache_stats {
43 unsigned int lookups;
44 unsigned int misses;
45 unsigned int allocations;
46 unsigned int reclaims;
47 unsigned int frees;
48};
49
50/*
51 * AVC operations
52 */
53
54void __init avc_init(void);
55
56int avc_audit(u32 ssid, u32 tsid,
57 u16 tclass, u32 requested,
58 struct av_decision *avd,
59 int result,
60 struct common_audit_data *a, unsigned flags);
61
62#define AVC_STRICT 1 /* Ignore permissive mode. */
63int avc_has_perm_noaudit(u32 ssid, u32 tsid,
64 u16 tclass, u32 requested,
65 unsigned flags,
66 struct av_decision *avd);
67
68int avc_has_perm_flags(u32 ssid, u32 tsid,
69 u16 tclass, u32 requested,
70 struct common_audit_data *auditdata,
71 unsigned);
72
73static inline int avc_has_perm(u32 ssid, u32 tsid,
74 u16 tclass, u32 requested,
75 struct common_audit_data *auditdata)
76{
77 return avc_has_perm_flags(ssid, tsid, tclass, requested, auditdata, 0);
78}
79
80u32 avc_policy_seqno(void);
81
82#define AVC_CALLBACK_GRANT 1
83#define AVC_CALLBACK_TRY_REVOKE 2
84#define AVC_CALLBACK_REVOKE 4
85#define AVC_CALLBACK_RESET 8
86#define AVC_CALLBACK_AUDITALLOW_ENABLE 16
87#define AVC_CALLBACK_AUDITALLOW_DISABLE 32
88#define AVC_CALLBACK_AUDITDENY_ENABLE 64
89#define AVC_CALLBACK_AUDITDENY_DISABLE 128
90
91int avc_add_callback(int (*callback)(u32 event, u32 ssid, u32 tsid,
92 u16 tclass, u32 perms,
93 u32 *out_retained),
94 u32 events, u32 ssid, u32 tsid,
95 u16 tclass, u32 perms);
96
97/* Exported to selinuxfs */
98int avc_get_hash_stats(char *page);
99extern unsigned int avc_cache_threshold;
100
101/* Attempt to free avc node cache */
102void avc_disable(void);
103
104#ifdef CONFIG_SECURITY_SELINUX_AVC_STATS
105DECLARE_PER_CPU(struct avc_cache_stats, avc_cache_stats);
106#endif
107
108#endif /* _SELINUX_AVC_H_ */
109