[mirror_ubuntu-artful-kernel.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 <linux/dcache.h>
#include <linux/magic.h>
#include <linux/types.h>
#include "flask.h"

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

/* 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
#define POLICYDB_VERSION_BOUNDARY	24
#define POLICYDB_VERSION_FILENAME_TRANS	25
#define POLICYDB_VERSION_ROLETRANS	26
#define POLICYDB_VERSION_NEW_OBJECT_DEFAULTS	27
#define POLICYDB_VERSION_DEFAULT_TYPE	28

/* 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_DEFAULT_TYPE
#endif

/* Mask for just the mount related flags */
#define SE_MNTMASK	0x0f
/* Super block security struct flags for mount options */
#define CONTEXT_MNT	0x01
#define FSCONTEXT_MNT	0x02
#define ROOTCONTEXT_MNT	0x04
#define DEFCONTEXT_MNT	0x08
/* Non-mount related flags */
#define SE_SBINITIALIZED	0x10
#define SE_SBPROC		0x20
#define SE_SBLABELSUPP	0x40

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

struct netlbl_lsm_secattr;

extern int selinux_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;

/*
 * type_datum properties
 * available at the kernel policy version >= POLICYDB_VERSION_BOUNDARY
 */
#define TYPEDATUM_PROPERTY_PRIMARY	0x0001
#define TYPEDATUM_PROPERTY_ATTRIBUTE	0x0002

/* limitation of boundary depth  */
#define POLICYDB_BOUNDS_MAXDEPTH	4

int security_mls_enabled(void);

int security_load_policy(void *data, size_t len);
int security_read_policy(void **data, size_t *len);
size_t security_policydb_len(void);

int security_policycap_supported(unsigned int req_cap);

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

/* definitions of av_decision.flags */
#define AVD_FLAGS_PERMISSIVE	0x0001

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

void security_compute_av_user(u32 ssid, u32 tsid,
			     u16 tclass, struct av_decision *avd);

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

int security_transition_sid_user(u32 ssid, u32 tsid, u16 tclass,
				 const char *objname, 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_bounded_transition(u32 oldsid, u32 newsid);

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 */
#define SECURITY_FS_USE_NATIVE		7 /* use native label support */
#define SECURITY_FS_USE_MAX		7 /* Highest SECURITY_FS_USE_XXX */

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);

/*
 * status notifier using mmap interface
 */
extern struct page *selinux_kernel_status_page(void);

#define SELINUX_KERNEL_STATUS_VERSION	1
struct selinux_kernel_status {
	u32	version;	/* version number of thie structure */
	u32	sequence;	/* sequence number of seqlock logic */
	u32	enforcing;	/* current setting of enforcing mode */
	u32	policyload;	/* times of policy reloaded */
	u32	deny_unknown;	/* current setting of deny_unknown */
	/*
	 * The version > 0 supports above members.
	 */
} __attribute__((packed));

extern void selinux_status_update_setenforce(int enforcing);
extern void selinux_status_update_policyload(int seqno);
extern void selinux_complete_init(void);
extern int selinux_disable(void);
extern void exit_sel_fs(void);
extern struct path selinux_null;
extern struct vfsmount *selinuxfs_mount;
extern void selnl_notify_setenforce(int val);
extern void selnl_notify_policyload(u32 seqno);
extern int selinux_nlmsg_lookup(u16 sclass, u16 nlmsg_type, u32 *perm);

#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
652bb9b0	11	#include <linux/dcache.h>
75834fc3	12	#include <linux/magic.h>
2606fd1f	13	#include <linux/types.h>
1da177e4 LT	14	#include "flask.h"
	15
	16	#define SECSID_NULL 0x00000000 /* unspecified SID */
	17	#define SECSID_WILD 0xffffffff /* wildcard SID */
	18	#define SECCLASS_NULL 0x0000 /* no class */
	19
1da177e4 LT	20	/* Identify specific policy version changes */
	21	#define POLICYDB_VERSION_BASE 15
	22	#define POLICYDB_VERSION_BOOL 16
	23	#define POLICYDB_VERSION_IPV6 17
	24	#define POLICYDB_VERSION_NLCLASS 18
	25	#define POLICYDB_VERSION_VALIDATETRANS 19
	26	#define POLICYDB_VERSION_MLS 19
782ebb99	27	#define POLICYDB_VERSION_AVTAB 20
f3f87714	28	#define POLICYDB_VERSION_RANGETRANS 21
3bb56b25	29	#define POLICYDB_VERSION_POLCAP 22
64dbf074	30	#define POLICYDB_VERSION_PERMISSIVE 23
d9250dea	31	#define POLICYDB_VERSION_BOUNDARY 24
652bb9b0	32	#define POLICYDB_VERSION_FILENAME_TRANS 25
8023976c	33	#define POLICYDB_VERSION_ROLETRANS 26
aa893269	34	#define POLICYDB_VERSION_NEW_OBJECT_DEFAULTS 27
eed7795d	35	#define POLICYDB_VERSION_DEFAULT_TYPE 28
1da177e4 LT	36
	37	/* Range of policy versions we understand*/
	38	#define POLICYDB_VERSION_MIN POLICYDB_VERSION_BASE
016b9bdb SS	39	#ifdef CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX
	40	#define POLICYDB_VERSION_MAX CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX_VALUE
	41	#else
eed7795d	42	#define POLICYDB_VERSION_MAX POLICYDB_VERSION_DEFAULT_TYPE
016b9bdb	43	#endif
1da177e4	44
0d90a7ec DQ	45	/* Mask for just the mount related flags */
	46	#define SE_MNTMASK 0x0f
	47	/* Super block security struct flags for mount options */
e0007529 EP	48	#define CONTEXT_MNT 0x01
	49	#define FSCONTEXT_MNT 0x02
	50	#define ROOTCONTEXT_MNT 0x04
	51	#define DEFCONTEXT_MNT 0x08
0d90a7ec DQ	52	/* Non-mount related flags */
	53	#define SE_SBINITIALIZED 0x10
	54	#define SE_SBPROC 0x20
11689d47	55	#define SE_SBLABELSUPP 0x40
e0007529	56
832cbd9a EP	57	#define CONTEXT_STR "context="
	58	#define FSCONTEXT_STR "fscontext="
	59	#define ROOTCONTEXT_STR "rootcontext="
	60	#define DEFCONTEXT_STR "defcontext="
11689d47	61	#define LABELSUPP_STR "seclabel"
832cbd9a	62
5778eabd	63	struct netlbl_lsm_secattr;
bb22f580	64
1da177e4	65	extern int selinux_enabled;
1da177e4	66
3bb56b25 PM	67	/* Policy capabilities */
	68	enum {
	69	POLICYDB_CAPABILITY_NETPEER,
b0c636b9	70	POLICYDB_CAPABILITY_OPENPERM,
3bb56b25 PM	71	__POLICYDB_CAPABILITY_MAX
	72	};
	73	#define POLICYDB_CAPABILITY_MAX (__POLICYDB_CAPABILITY_MAX - 1)
	74
	75	extern int selinux_policycap_netpeer;
b0c636b9	76	extern int selinux_policycap_openperm;
3bb56b25	77
d9250dea KK	78	/*
	79	* type_datum properties
	80	* available at the kernel policy version >= POLICYDB_VERSION_BOUNDARY
	81	*/
	82	#define TYPEDATUM_PROPERTY_PRIMARY 0x0001
	83	#define TYPEDATUM_PROPERTY_ATTRIBUTE 0x0002
	84
	85	/* limitation of boundary depth */
	86	#define POLICYDB_BOUNDS_MAXDEPTH 4
	87
0719aaf5 GT	88	int security_mls_enabled(void);
0719aaf5 GT	89
b19d8eae	90	int security_load_policy(void *data, size_t len);
6b697323	91	int security_read_policy(void *data, size_t len);
cee74f47	92	size_t security_policydb_len(void);
1da177e4	93
3bb56b25 PM	94	int security_policycap_supported(unsigned int req_cap);
3bb56b25 PM	95
e47c8fc5	96	#define SEL_VEC_MAX 32
1da177e4 LT	97	struct av_decision {
1da177e4 LT	98	u32 allowed;
1da177e4 LT	99	u32 auditallow;
	100	u32 auditdeny;
	101	u32 seqno;
8a6f83af	102	u32 flags;
1da177e4 LT	103	};
1da177e4 LT	104
8a6f83af KK	105	/* definitions of av_decision.flags */
8a6f83af KK	106	#define AVD_FLAGS_PERMISSIVE 0x0001
64dbf074	107
19439d05 SS	108	void security_compute_av(u32 ssid, u32 tsid,
19439d05 SS	109	u16 tclass, struct av_decision *avd);
c6d3aaa4	110
19439d05 SS	111	void security_compute_av_user(u32 ssid, u32 tsid,
19439d05 SS	112	u16 tclass, struct av_decision *avd);
1da177e4	113
652bb9b0 EP	114	int security_transition_sid(u32 ssid, u32 tsid, u16 tclass,
652bb9b0 EP	115	const struct qstr qstr, u32 out_sid);
c6d3aaa4	116
f50a3ec9 KK	117	int security_transition_sid_user(u32 ssid, u32 tsid, u16 tclass,
f50a3ec9 KK	118	const char objname, u32 out_sid);
1da177e4 LT	119
	120	int security_member_sid(u32 ssid, u32 tsid,
	121	u16 tclass, u32 *out_sid);
	122
	123	int security_change_sid(u32 ssid, u32 tsid,
	124	u16 tclass, u32 *out_sid);
	125
	126	int security_sid_to_context(u32 sid, char **scontext,
	127	u32 *scontext_len);
	128
12b29f34 SS	129	int security_sid_to_context_force(u32 sid, char *scontext, u32 scontext_len);
12b29f34 SS	130
8f0cfa52	131	int security_context_to_sid(const char *scontext, u32 scontext_len,
1da177e4 LT	132	u32 *out_sid);
1da177e4 LT	133
7bf570dc	134	int security_context_to_sid_default(const char *scontext, u32 scontext_len,
869ab514	135	u32 *out_sid, u32 def_sid, gfp_t gfp_flags);
f5c1d5b2	136
12b29f34 SS	137	int security_context_to_sid_force(const char *scontext, u32 scontext_len,
	138	u32 *sid);
	139
1da177e4 LT	140	int security_get_user_sids(u32 callsid, char *username,
	141	u32 *sids, u32 nel);
	142
3e112172	143	int security_port_sid(u8 protocol, u16 port, u32 *out_sid);
1da177e4	144
e8bfdb9d	145	int security_netif_sid(char name, u32 if_sid);
1da177e4 LT	146
	147	int security_node_sid(u16 domain, void *addr, u32 addrlen,
	148	u32 *out_sid);
	149
	150	int security_validate_transition(u32 oldsid, u32 newsid, u32 tasksid,
b19d8eae	151	u16 tclass);
1da177e4	152
d9250dea KK	153	int security_bounded_transition(u32 oldsid, u32 newsid);
d9250dea KK	154
08554d6b VY	155	int security_sid_mls_copy(u32 sid, u32 mls_sid, u32 *new_sid);
08554d6b VY	156
220deb96 PM	157	int security_net_peersid_resolve(u32 nlbl_sid, u32 nlbl_type,
	158	u32 xfrm_sid,
	159	u32 *peer_sid);
	160
55fcf09b CP	161	int security_get_classes(char **classes, int nclasses);
55fcf09b CP	162	int security_get_permissions(char class, char *perms, int nperms);
3f12070e EP	163	int security_get_reject_unknown(void);
3f12070e EP	164	int security_get_allow_unknown(void);
55fcf09b	165
1da177e4 LT	166	#define SECURITY_FS_USE_XATTR 1 /* use xattr */
	167	#define SECURITY_FS_USE_TRANS 2 /* use transition SIDs, e.g. devpts/tmpfs */
	168	#define SECURITY_FS_USE_TASK 3 /* use task SIDs, e.g. pipefs/sockfs */
	169	#define SECURITY_FS_USE_GENFS 4 /* use the genfs support */
	170	#define SECURITY_FS_USE_NONE 5 /* no labeling support */
	171	#define SECURITY_FS_USE_MNTPOINT 6 /* use mountpoint labeling */
eb9ae686 DQ	172	#define SECURITY_FS_USE_NATIVE 7 /* use native label support */
eb9ae686 DQ	173	#define SECURITY_FS_USE_MAX 7 /* Highest SECURITY_FS_USE_XXX */
1da177e4 LT	174
1da177e4 LT	175	int security_fs_use(const char fstype, unsigned int behavior,
089be43e	176	u32 *sid);
1da177e4 LT	177
	178	int security_genfs_sid(const char fstype, char name, u16 sclass,
	179	u32 *sid);
	180
5778eabd PM	181	#ifdef CONFIG_NETLABEL
5778eabd PM	182	int security_netlbl_secattr_to_sid(struct netlbl_lsm_secattr *secattr,
5778eabd PM	183	u32 *sid);
	184
	185	int security_netlbl_sid_to_secattr(u32 sid,
	186	struct netlbl_lsm_secattr *secattr);
	187	#else
	188	static inline int security_netlbl_secattr_to_sid(
	189	struct netlbl_lsm_secattr *secattr,
5778eabd PM	190	u32 *sid)
	191	{
	192	return -EIDRM;
	193	}
	194
	195	static inline int security_netlbl_sid_to_secattr(u32 sid,
	196	struct netlbl_lsm_secattr *secattr)
	197	{
	198	return -ENOENT;
	199	}
	200	#endif /* CONFIG_NETLABEL */
	201
f0ee2e46 JC	202	const char *security_get_initial_sid_context(u32 sid);
f0ee2e46 JC	203
11904167 KK	204	/*
	205	* status notifier using mmap interface
	206	*/
	207	extern struct page *selinux_kernel_status_page(void);
	208
	209	#define SELINUX_KERNEL_STATUS_VERSION 1
36f7f284	210	struct selinux_kernel_status {
11904167 KK	211	u32 version; /* version number of thie structure */
	212	u32 sequence; /* sequence number of seqlock logic */
	213	u32 enforcing; /* current setting of enforcing mode */
	214	u32 policyload; /* times of policy reloaded */
	215	u32 deny_unknown; /* current setting of deny_unknown */
	216	/*
	217	* The version > 0 supports above members.
	218	*/
	219	} __attribute__((packed));
	220
	221	extern void selinux_status_update_setenforce(int enforcing);
	222	extern void selinux_status_update_policyload(int seqno);
cc59a582	223	extern void selinux_complete_init(void);
58982b74	224	extern int selinux_disable(void);
ad3fa08c	225	extern void exit_sel_fs(void);
765927b2	226	extern struct path selinux_null;
ad3fa08c	227	extern struct vfsmount *selinuxfs_mount;
6a3fbe81 JM	228	extern void selnl_notify_setenforce(int val);
	229	extern void selnl_notify_policyload(u32 seqno);
	230	extern int selinux_nlmsg_lookup(u16 sclass, u16 nlmsg_type, u32 *perm);
11904167	231
1da177e4 LT	232	#endif /* _SELINUX_SECURITY_H_ */
1da177e4 LT	233