/* * 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 /* 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_FILENAME_TRANS #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, ssize_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, 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); /* * 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); #endif /* _SELINUX_SECURITY_H_ */