[net-next-2.6.git] / security / selinux / include / security.h

/*
 * 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
#define POLICYDB_VERSION_POLCAP		22
#define POLICYDB_VERSION_PERMISSIVE	23

/* 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_PERMISSIVE
#endif

#define CONTEXT_MNT	0x01
#define FSCONTEXT_MNT	0x02
#define ROOTCONTEXT_MNT	0x04
#define DEFCONTEXT_MNT	0x08

#define CONTEXT_STR	"context="
#define FSCONTEXT_STR	"fscontext="
#define ROOTCONTEXT_STR	"rootcontext="
#define DEFCONTEXT_STR	"defcontext="

struct netlbl_lsm_secattr;

extern int selinux_enabled;
extern int selinux_mls_enabled;

/* Policy capabilities */
enum {
	POLICYDB_CAPABILITY_NETPEER,
	POLICYDB_CAPABILITY_OPENPERM,
	__POLICYDB_CAPABILITY_MAX
};
#define POLICYDB_CAPABILITY_MAX (__POLICYDB_CAPABILITY_MAX - 1)

extern int selinux_policycap_netpeer;
extern int selinux_policycap_openperm;

int security_load_policy(void *data, size_t len);

int security_policycap_supported(unsigned int req_cap);

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

int security_permissive_sid(u32 sid);

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_sid_to_context_force(u32 sid, char **scontext, u32 *scontext_len);

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

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

int security_context_to_sid_force(const char *scontext, u32 scontext_len,
				  u32 *sid);

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

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

int security_netif_sid(char *name, u32 *if_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_net_peersid_resolve(u32 nlbl_sid, u32 nlbl_type,
				 u32 xfrm_sid,
				 u32 *peer_sid);

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

#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 *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 *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_ */
Commit	Line	Data
1da177e4 LT	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 "flask.h"
	12
	13	#define SECSID_NULL 0x00000000 /* unspecified SID */
	14	#define SECSID_WILD 0xffffffff /* wildcard SID */
	15	#define SECCLASS_NULL 0x0000 /* no class */
	16
	17	#define SELINUX_MAGIC 0xf97cff8c
	18
	19	/* Identify specific policy version changes */
	20	#define POLICYDB_VERSION_BASE 15
	21	#define POLICYDB_VERSION_BOOL 16
	22	#define POLICYDB_VERSION_IPV6 17
	23	#define POLICYDB_VERSION_NLCLASS 18
	24	#define POLICYDB_VERSION_VALIDATETRANS 19
	25	#define POLICYDB_VERSION_MLS 19
782ebb99	26	#define POLICYDB_VERSION_AVTAB 20
f3f87714	27	#define POLICYDB_VERSION_RANGETRANS 21
3bb56b25	28	#define POLICYDB_VERSION_POLCAP 22
64dbf074	29	#define POLICYDB_VERSION_PERMISSIVE 23
1da177e4 LT	30
	31	/* Range of policy versions we understand*/
	32	#define POLICYDB_VERSION_MIN POLICYDB_VERSION_BASE
016b9bdb SS	33	#ifdef CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX
	34	#define POLICYDB_VERSION_MAX CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX_VALUE
	35	#else
64dbf074	36	#define POLICYDB_VERSION_MAX POLICYDB_VERSION_PERMISSIVE
016b9bdb	37	#endif
1da177e4	38
e0007529 EP	39	#define CONTEXT_MNT 0x01
	40	#define FSCONTEXT_MNT 0x02
	41	#define ROOTCONTEXT_MNT 0x04
	42	#define DEFCONTEXT_MNT 0x08
	43
832cbd9a EP	44	#define CONTEXT_STR "context="
	45	#define FSCONTEXT_STR "fscontext="
	46	#define ROOTCONTEXT_STR "rootcontext="
	47	#define DEFCONTEXT_STR "defcontext="
	48
5778eabd	49	struct netlbl_lsm_secattr;
bb22f580	50
1da177e4	51	extern int selinux_enabled;
1da177e4 LT	52	extern int selinux_mls_enabled;
1da177e4 LT	53
3bb56b25 PM	54	/* Policy capabilities */
	55	enum {
	56	POLICYDB_CAPABILITY_NETPEER,
b0c636b9	57	POLICYDB_CAPABILITY_OPENPERM,
3bb56b25 PM	58	__POLICYDB_CAPABILITY_MAX
	59	};
	60	#define POLICYDB_CAPABILITY_MAX (__POLICYDB_CAPABILITY_MAX - 1)
	61
	62	extern int selinux_policycap_netpeer;
b0c636b9	63	extern int selinux_policycap_openperm;
3bb56b25	64
b19d8eae	65	int security_load_policy(void *data, size_t len);
1da177e4	66
3bb56b25 PM	67	int security_policycap_supported(unsigned int req_cap);
3bb56b25 PM	68
e47c8fc5	69	#define SEL_VEC_MAX 32
1da177e4 LT	70	struct av_decision {
	71	u32 allowed;
	72	u32 decided;
	73	u32 auditallow;
	74	u32 auditdeny;
	75	u32 seqno;
	76	};
	77
64dbf074 EP	78	int security_permissive_sid(u32 sid);
64dbf074 EP	79
1da177e4 LT	80	int security_compute_av(u32 ssid, u32 tsid,
	81	u16 tclass, u32 requested,
	82	struct av_decision *avd);
	83
	84	int security_transition_sid(u32 ssid, u32 tsid,
	85	u16 tclass, u32 *out_sid);
	86
	87	int security_member_sid(u32 ssid, u32 tsid,
	88	u16 tclass, u32 *out_sid);
	89
	90	int security_change_sid(u32 ssid, u32 tsid,
	91	u16 tclass, u32 *out_sid);
	92
	93	int security_sid_to_context(u32 sid, char **scontext,
	94	u32 *scontext_len);
	95
12b29f34 SS	96	int security_sid_to_context_force(u32 sid, char *scontext, u32 scontext_len);
12b29f34 SS	97
8f0cfa52	98	int security_context_to_sid(const char *scontext, u32 scontext_len,
1da177e4 LT	99	u32 *out_sid);
1da177e4 LT	100
7bf570dc	101	int security_context_to_sid_default(const char *scontext, u32 scontext_len,
869ab514	102	u32 *out_sid, u32 def_sid, gfp_t gfp_flags);
f5c1d5b2	103
12b29f34 SS	104	int security_context_to_sid_force(const char *scontext, u32 scontext_len,
	105	u32 *sid);
	106
1da177e4 LT	107	int security_get_user_sids(u32 callsid, char *username,
	108	u32 *sids, u32 nel);
	109
3e112172	110	int security_port_sid(u8 protocol, u16 port, u32 *out_sid);
1da177e4	111
e8bfdb9d	112	int security_netif_sid(char name, u32 if_sid);
1da177e4 LT	113
	114	int security_node_sid(u16 domain, void *addr, u32 addrlen,
	115	u32 *out_sid);
	116
	117	int security_validate_transition(u32 oldsid, u32 newsid, u32 tasksid,
b19d8eae	118	u16 tclass);
1da177e4	119
08554d6b VY	120	int security_sid_mls_copy(u32 sid, u32 mls_sid, u32 *new_sid);
08554d6b VY	121
220deb96 PM	122	int security_net_peersid_resolve(u32 nlbl_sid, u32 nlbl_type,
	123	u32 xfrm_sid,
	124	u32 *peer_sid);
	125
55fcf09b CP	126	int security_get_classes(char **classes, int nclasses);
55fcf09b CP	127	int security_get_permissions(char class, char *perms, int nperms);
3f12070e EP	128	int security_get_reject_unknown(void);
3f12070e EP	129	int security_get_allow_unknown(void);
55fcf09b	130
1da177e4 LT	131	#define SECURITY_FS_USE_XATTR 1 /* use xattr */
	132	#define SECURITY_FS_USE_TRANS 2 /* use transition SIDs, e.g. devpts/tmpfs */
	133	#define SECURITY_FS_USE_TASK 3 /* use task SIDs, e.g. pipefs/sockfs */
	134	#define SECURITY_FS_USE_GENFS 4 /* use the genfs support */
	135	#define SECURITY_FS_USE_NONE 5 /* no labeling support */
	136	#define SECURITY_FS_USE_MNTPOINT 6 /* use mountpoint labeling */
	137
	138	int security_fs_use(const char fstype, unsigned int behavior,
089be43e	139	u32 *sid);
1da177e4 LT	140
	141	int security_genfs_sid(const char fstype, char name, u16 sclass,
	142	u32 *sid);
	143
5778eabd PM	144	#ifdef CONFIG_NETLABEL
5778eabd PM	145	int security_netlbl_secattr_to_sid(struct netlbl_lsm_secattr *secattr,
5778eabd PM	146	u32 *sid);
	147
	148	int security_netlbl_sid_to_secattr(u32 sid,
	149	struct netlbl_lsm_secattr *secattr);
	150	#else
	151	static inline int security_netlbl_secattr_to_sid(
	152	struct netlbl_lsm_secattr *secattr,
5778eabd PM	153	u32 *sid)
	154	{
	155	return -EIDRM;
	156	}
	157
	158	static inline int security_netlbl_sid_to_secattr(u32 sid,
	159	struct netlbl_lsm_secattr *secattr)
	160	{
	161	return -ENOENT;
	162	}
	163	#endif /* CONFIG_NETLABEL */
	164
f0ee2e46 JC	165	const char *security_get_initial_sid_context(u32 sid);
f0ee2e46 JC	166
1da177e4 LT	167	#endif /* _SELINUX_SECURITY_H_ */
1da177e4 LT	168