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 26 #define POLICYDB_VERSION_AVTAB 20 27 #define POLICYDB_VERSION_RANGETRANS 21 28 29 /* Range of policy versions we understand*/ 30 #define POLICYDB_VERSION_MIN POLICYDB_VERSION_BASE 31 #ifdef CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX 32 #define POLICYDB_VERSION_MAX CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX_VALUE 33 #else 34 #define POLICYDB_VERSION_MAX POLICYDB_VERSION_RANGETRANS 35 #endif 36 37 struct netlbl_lsm_secattr; 38 39 extern int selinux_enabled; 40 extern int selinux_mls_enabled; 41 42 int security_load_policy(void * data, size_t len); 43 44 #define SEL_VEC_MAX 32 45 struct av_decision { 46 u32 allowed; 47 u32 decided; 48 u32 auditallow; 49 u32 auditdeny; 50 u32 seqno; 51 }; 52 53 int security_compute_av(u32 ssid, u32 tsid, 54 u16 tclass, u32 requested, 55 struct av_decision *avd); 56 57 int security_transition_sid(u32 ssid, u32 tsid, 58 u16 tclass, u32 *out_sid); 59 60 int security_member_sid(u32 ssid, u32 tsid, 61 u16 tclass, u32 *out_sid); 62 63 int security_change_sid(u32 ssid, u32 tsid, 64 u16 tclass, u32 *out_sid); 65 66 int security_sid_to_context(u32 sid, char **scontext, 67 u32 *scontext_len); 68 69 int security_context_to_sid(char *scontext, u32 scontext_len, 70 u32 *out_sid); 71 72 int security_context_to_sid_default(char *scontext, u32 scontext_len, u32 *out_sid, u32 def_sid); 73 74 int security_get_user_sids(u32 callsid, char *username, 75 u32 **sids, u32 *nel); 76 77 int security_port_sid(u16 domain, u16 type, u8 protocol, u16 port, 78 u32 *out_sid); 79 80 int security_netif_sid(char *name, u32 *if_sid, 81 u32 *msg_sid); 82 83 int security_node_sid(u16 domain, void *addr, u32 addrlen, 84 u32 *out_sid); 85 86 int security_validate_transition(u32 oldsid, u32 newsid, u32 tasksid, 87 u16 tclass); 88 89 int security_sid_mls_copy(u32 sid, u32 mls_sid, u32 *new_sid); 90 91 int security_get_classes(char ***classes, int *nclasses); 92 int security_get_permissions(char *class, char ***perms, int *nperms); 93 int security_get_reject_unknown(void); 94 int security_get_allow_unknown(void); 95 96 #define SECURITY_FS_USE_XATTR 1 /* use xattr */ 97 #define SECURITY_FS_USE_TRANS 2 /* use transition SIDs, e.g. devpts/tmpfs */ 98 #define SECURITY_FS_USE_TASK 3 /* use task SIDs, e.g. pipefs/sockfs */ 99 #define SECURITY_FS_USE_GENFS 4 /* use the genfs support */ 100 #define SECURITY_FS_USE_NONE 5 /* no labeling support */ 101 #define SECURITY_FS_USE_MNTPOINT 6 /* use mountpoint labeling */ 102 103 int security_fs_use(const char *fstype, unsigned int *behavior, 104 u32 *sid); 105 106 int security_genfs_sid(const char *fstype, char *name, u16 sclass, 107 u32 *sid); 108 109 #ifdef CONFIG_NETLABEL 110 int security_netlbl_secattr_to_sid(struct netlbl_lsm_secattr *secattr, 111 u32 base_sid, 112 u32 *sid); 113 114 int security_netlbl_sid_to_secattr(u32 sid, 115 struct netlbl_lsm_secattr *secattr); 116 #else 117 static inline int security_netlbl_secattr_to_sid( 118 struct netlbl_lsm_secattr *secattr, 119 u32 base_sid, 120 u32 *sid) 121 { 122 return -EIDRM; 123 } 124 125 static inline int security_netlbl_sid_to_secattr(u32 sid, 126 struct netlbl_lsm_secattr *secattr) 127 { 128 return -ENOENT; 129 } 130 #endif /* CONFIG_NETLABEL */ 131 132 const char *security_get_initial_sid_context(u32 sid); 133 134 #endif /* _SELINUX_SECURITY_H_ */ 135 136