summaryrefslogtreecommitdiffstats
path: root/security/selinux/include/security.h
blob: 83bdd4d2a29e1ad4713367e2b506a3e756c1079f (plain)
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
/*
 * Security server interface.
 *
 * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
 *
 */

#ifndef _SELINUX_SECURITY_H_
#define _SELINUX_SECURITY_H_

#include "flask.h"

#define SECSID_NULL			0x00000000 /* unspecified SID */
#define SECSID_WILD			0xffffffff /* wildcard SID */
#define SECCLASS_NULL			0x0000 /* no class */

#define SELINUX_MAGIC 0xf97cff8c

/* Identify specific policy version changes */
#define POLICYDB_VERSION_BASE		15
#define POLICYDB_VERSION_BOOL		16
#define POLICYDB_VERSION_IPV6		17
#define POLICYDB_VERSION_NLCLASS	18
#define POLICYDB_VERSION_VALIDATETRANS	19
#define POLICYDB_VERSION_MLS		19
#define POLICYDB_VERSION_AVTAB		20
#define POLICYDB_VERSION_RANGETRANS	21

/* Range of policy versions we understand*/
#define POLICYDB_VERSION_MIN   POLICYDB_VERSION_BASE
#ifdef CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX
#define POLICYDB_VERSION_MAX	CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX_VALUE
#else
#define POLICYDB_VERSION_MAX	POLICYDB_VERSION_RANGETRANS
#endif

struct netlbl_lsm_secattr;

extern int selinux_enabled;
extern int selinux_mls_enabled;

int security_load_policy(void * data, size_t len);

#define SEL_VEC_MAX 32
struct av_decision {
	u32 allowed;
	u32 decided;
	u32 auditallow;
	u32 auditdeny;
	u32 seqno;
};

int security_compute_av(u32 ssid, u32 tsid,
	u16 tclass, u32 requested,
	struct av_decision *avd);

int security_transition_sid(u32 ssid, u32 tsid,
	u16 tclass, u32 *out_sid);

int security_member_sid(u32 ssid, u32 tsid,
	u16 tclass, u32 *out_sid);

int security_change_sid(u32 ssid, u32 tsid,
	u16 tclass, u32 *out_sid);

int security_sid_to_context(u32 sid, char **scontext,
	u32 *scontext_len);

int security_context_to_sid(char *scontext, u32 scontext_len,
	u32 *out_sid);

int security_context_to_sid_default(char *scontext, u32 scontext_len, u32 *out_sid, u32 def_sid);

int security_get_user_sids(u32 callsid, char *username,
			   u32 **sids, u32 *nel);

int security_port_sid(u16 domain, u16 type, u8 protocol, u16 port,
	u32 *out_sid);

int security_netif_sid(char *name, u32 *if_sid,
	u32 *msg_sid);

int security_node_sid(u16 domain, void *addr, u32 addrlen,
	u32 *out_sid);

int security_validate_transition(u32 oldsid, u32 newsid, u32 tasksid,
                                 u16 tclass);

int security_sid_mls_copy(u32 sid, u32 mls_sid, u32 *new_sid);

int security_get_classes(char ***classes, int *nclasses);
int security_get_permissions(char *class, char ***perms, int *nperms);

#define SECURITY_FS_USE_XATTR		1 /* use xattr */
#define SECURITY_FS_USE_TRANS		2 /* use transition SIDs, e.g. devpts/tmpfs */
#define SECURITY_FS_USE_TASK		3 /* use task SIDs, e.g. pipefs/sockfs */
#define SECURITY_FS_USE_GENFS		4 /* use the genfs support */
#define SECURITY_FS_USE_NONE		5 /* no labeling support */
#define SECURITY_FS_USE_MNTPOINT	6 /* use mountpoint labeling */

int security_fs_use(const char *fstype, unsigned int *behavior,
	u32 *sid);

int security_genfs_sid(const char *fstype, char *name, u16 sclass,
	u32 *sid);

#ifdef CONFIG_NETLABEL
int security_netlbl_secattr_to_sid(struct netlbl_lsm_secattr *secattr,
				   u32 base_sid,
				   u32 *sid);

int security_netlbl_sid_to_secattr(u32 sid,
				   struct netlbl_lsm_secattr *secattr);
#else
static inline int security_netlbl_secattr_to_sid(
					    struct netlbl_lsm_secattr *secattr,
					    u32 base_sid,
					    u32 *sid)
{
	return -EIDRM;
}

static inline int security_netlbl_sid_to_secattr(u32 sid,
					   struct netlbl_lsm_secattr *secattr)
{
	return -ENOENT;
}
#endif /* CONFIG_NETLABEL */

const char *security_get_initial_sid_context(u32 sid);

#endif /* _SELINUX_SECURITY_H_ */

OpenPOWER on IntegriCloud