root/security/selinux/include/security.h

INCLUDED FROM

DEFINITIONS

1. security_netlbl_secattr_to_sid
2. security_netlbl_sid_to_secattr

/*
 * 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
#define POLICYDB_VERSION_BOUNDARY       24

/* 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_BOUNDARY
#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;

/*
 * 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_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_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 */

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_ */