1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/*
* Access vector cache interface for object managers.
*
* Author : Stephen Smalley, <sds@epoch.ncsc.mil>
*/
#ifndef _SELINUX_AVC_H_
#define _SELINUX_AVC_H_
#include <linux/stddef.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/kdev_t.h>
#include <linux/spinlock.h>
#include <linux/init.h>
#include <linux/in6.h>
#include <asm/system.h>
#include "flask.h"
#include "av_permissions.h"
#include "security.h"
#ifdef CONFIG_SECURITY_SELINUX_DEVELOP
extern int selinux_enforcing;
#else
#define selinux_enforcing 1
#endif
/*
* An entry in the AVC.
*/
struct avc_entry;
struct task_struct;
struct vfsmount;
struct dentry;
struct inode;
struct sock;
struct sk_buff;
/* Auxiliary data to use in generating the audit record. */
struct avc_audit_data {
char type;
#define AVC_AUDIT_DATA_FS 1
#define AVC_AUDIT_DATA_NET 2
#define AVC_AUDIT_DATA_CAP 3
#define AVC_AUDIT_DATA_IPC 4
struct task_struct *tsk;
union {
struct {
struct vfsmount *mnt;
struct dentry *dentry;
struct inode *inode;
} fs;
struct {
char *netif;
struct sock *sk;
u16 family;
__be16 dport;
__be16 sport;
union {
struct {
__be32 daddr;
__be32 saddr;
} v4;
struct {
struct in6_addr daddr;
struct in6_addr saddr;
} v6;
} fam;
} net;
int cap;
int ipc_id;
} u;
};
#define v4info fam.v4
#define v6info fam.v6
/* Initialize an AVC audit data structure. */
#define AVC_AUDIT_DATA_INIT(_d,_t) \
{ memset((_d), 0, sizeof(struct avc_audit_data)); (_d)->type = AVC_AUDIT_DATA_##_t; }
/*
* AVC statistics
*/
struct avc_cache_stats
{
unsigned int lookups;
unsigned int hits;
unsigned int misses;
unsigned int allocations;
unsigned int reclaims;
unsigned int frees;
};
/*
* AVC operations
*/
void __init avc_init(void);
void avc_audit(u32 ssid, u32 tsid,
u16 tclass, u32 requested,
struct av_decision *avd, int result, struct avc_audit_data *auditdata);
#define AVC_STRICT 1 /* Ignore permissive mode. */
int avc_has_perm_noaudit(u32 ssid, u32 tsid,
u16 tclass, u32 requested,
unsigned flags,
struct av_decision *avd);
int avc_has_perm(u32 ssid, u32 tsid,
u16 tclass, u32 requested,
struct avc_audit_data *auditdata);
#define AVC_CALLBACK_GRANT 1
#define AVC_CALLBACK_TRY_REVOKE 2
#define AVC_CALLBACK_REVOKE 4
#define AVC_CALLBACK_RESET 8
#define AVC_CALLBACK_AUDITALLOW_ENABLE 16
#define AVC_CALLBACK_AUDITALLOW_DISABLE 32
#define AVC_CALLBACK_AUDITDENY_ENABLE 64
#define AVC_CALLBACK_AUDITDENY_DISABLE 128
int avc_add_callback(int (*callback)(u32 event, u32 ssid, u32 tsid,
u16 tclass, u32 perms,
u32 *out_retained),
u32 events, u32 ssid, u32 tsid,
u16 tclass, u32 perms);
/* Exported to selinuxfs */
int avc_get_hash_stats(char *page);
extern unsigned int avc_cache_threshold;
#ifdef CONFIG_SECURITY_SELINUX_AVC_STATS
DECLARE_PER_CPU(struct avc_cache_stats, avc_cache_stats);
#endif
#endif /* _SELINUX_AVC_H_ */
|
