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 <linux/skbuff.h> 12 #include "flask.h" 13 14 #define SECSID_NULL 0x00000000 /* unspecified SID */ 15 #define SECSID_WILD 0xffffffff /* wildcard SID */ 16 #define SECCLASS_NULL 0x0000 /* no class */ 17 18 #define SELINUX_MAGIC 0xf97cff8c 19 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 27 #define POLICYDB_VERSION_AVTAB 20 28 #define POLICYDB_VERSION_RANGETRANS 21 29 30 /* Range of policy versions we understand*/ 31 #define POLICYDB_VERSION_MIN POLICYDB_VERSION_BASE 32 #ifdef CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX 33 #define POLICYDB_VERSION_MAX CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX_VALUE 34 #else 35 #define POLICYDB_VERSION_MAX POLICYDB_VERSION_RANGETRANS 36 #endif 37 38 extern int selinux_enabled; 39 extern int selinux_mls_enabled; 40 41 int security_load_policy(void * data, size_t len); 42 43 struct av_decision { 44 u32 allowed; 45 u32 decided; 46 u32 auditallow; 47 u32 auditdeny; 48 u32 seqno; 49 }; 50 51 int security_compute_av(u32 ssid, u32 tsid, 52 u16 tclass, u32 requested, 53 struct av_decision *avd); 54 55 int security_transition_sid(u32 ssid, u32 tsid, 56 u16 tclass, u32 *out_sid); 57 58 int security_member_sid(u32 ssid, u32 tsid, 59 u16 tclass, u32 *out_sid); 60 61 int security_change_sid(u32 ssid, u32 tsid, 62 u16 tclass, u32 *out_sid); 63 64 int security_sid_to_context(u32 sid, char **scontext, 65 u32 *scontext_len); 66 67 int security_context_to_sid(char *scontext, u32 scontext_len, 68 u32 *out_sid); 69 70 int security_context_to_sid_default(char *scontext, u32 scontext_len, u32 *out_sid, u32 def_sid); 71 72 int security_get_user_sids(u32 callsid, char *username, 73 u32 **sids, u32 *nel); 74 75 int security_port_sid(u16 domain, u16 type, u8 protocol, u16 port, 76 u32 *out_sid); 77 78 int security_netif_sid(char *name, u32 *if_sid, 79 u32 *msg_sid); 80 81 int security_node_sid(u16 domain, void *addr, u32 addrlen, 82 u32 *out_sid); 83 84 void security_skb_extlbl_sid(struct sk_buff *skb, u32 base_sid, u32 *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 #define SECURITY_FS_USE_XATTR 1 /* use xattr */ 92 #define SECURITY_FS_USE_TRANS 2 /* use transition SIDs, e.g. devpts/tmpfs */ 93 #define SECURITY_FS_USE_TASK 3 /* use task SIDs, e.g. pipefs/sockfs */ 94 #define SECURITY_FS_USE_GENFS 4 /* use the genfs support */ 95 #define SECURITY_FS_USE_NONE 5 /* no labeling support */ 96 #define SECURITY_FS_USE_MNTPOINT 6 /* use mountpoint labeling */ 97 98 int security_fs_use(const char *fstype, unsigned int *behavior, 99 u32 *sid); 100 101 int security_genfs_sid(const char *fstype, char *name, u16 sclass, 102 u32 *sid); 103 104 #endif /* _SELINUX_SECURITY_H_ */ 105 106