/* SPDX-License-Identifier: GPL-2.0 */ /* * Security server interface. * * Author : Stephen Smalley, <[email protected]> * */ #ifndef _SELINUX_SECURITY_H_ #define _SELINUX_SECURITY_H_ #include <linux/compiler.h> #include <linux/dcache.h> #include <linux/magic.h> #include <linux/types.h> #include <linux/rcupdate.h> #include <linux/refcount.h> #include <linux/workqueue.h> #include <linux/delay.h> #include <linux/printk.h> #include "flask.h" #include "policycap.h" #define SECSID_NULL … #define SECSID_WILD … #define SECCLASS_NULL … /* Identify specific policy version changes */ #define POLICYDB_VERSION_BASE … #define POLICYDB_VERSION_BOOL … #define POLICYDB_VERSION_IPV6 … #define POLICYDB_VERSION_NLCLASS … #define POLICYDB_VERSION_VALIDATETRANS … #define POLICYDB_VERSION_MLS … #define POLICYDB_VERSION_AVTAB … #define POLICYDB_VERSION_RANGETRANS … #define POLICYDB_VERSION_POLCAP … #define POLICYDB_VERSION_PERMISSIVE … #define POLICYDB_VERSION_BOUNDARY … #define POLICYDB_VERSION_FILENAME_TRANS … #define POLICYDB_VERSION_ROLETRANS … #define POLICYDB_VERSION_NEW_OBJECT_DEFAULTS … #define POLICYDB_VERSION_DEFAULT_TYPE … #define POLICYDB_VERSION_CONSTRAINT_NAMES … #define POLICYDB_VERSION_XPERMS_IOCTL … #define POLICYDB_VERSION_INFINIBAND … #define POLICYDB_VERSION_GLBLUB … #define POLICYDB_VERSION_COMP_FTRANS … /* Range of policy versions we understand*/ #define POLICYDB_VERSION_MIN … #define POLICYDB_VERSION_MAX … /* Mask for just the mount related flags */ #define SE_MNTMASK … /* Super block security struct flags for mount options */ /* BE CAREFUL, these need to be the low order bits for selinux_get_mnt_opts */ #define CONTEXT_MNT … #define FSCONTEXT_MNT … #define ROOTCONTEXT_MNT … #define DEFCONTEXT_MNT … #define SBLABEL_MNT … /* Non-mount related flags */ #define SE_SBINITIALIZED … #define SE_SBPROC … #define SE_SBGENFS … #define SE_SBGENFS_XATTR … #define SE_SBNATIVE … #define CONTEXT_STR … #define FSCONTEXT_STR … #define ROOTCONTEXT_STR … #define DEFCONTEXT_STR … #define SECLABEL_STR … struct netlbl_lsm_secattr; extern int selinux_enabled_boot; /* * type_datum properties * available at the kernel policy version >= POLICYDB_VERSION_BOUNDARY */ #define TYPEDATUM_PROPERTY_PRIMARY … #define TYPEDATUM_PROPERTY_ATTRIBUTE … /* limitation of boundary depth */ #define POLICYDB_BOUNDS_MAXDEPTH … struct selinux_policy; struct selinux_state { … } __randomize_layout; void selinux_avc_init(void); extern struct selinux_state selinux_state; static inline bool selinux_initialized(void) { … } static inline void selinux_mark_initialized(void) { … } #ifdef CONFIG_SECURITY_SELINUX_DEVELOP static inline bool enforcing_enabled(void) { … } static inline void enforcing_set(bool value) { … } #else static inline bool enforcing_enabled(void) { return true; } static inline void enforcing_set(bool value) { } #endif static inline bool checkreqprot_get(void) { … } static inline bool selinux_policycap_netpeer(void) { … } static inline bool selinux_policycap_openperm(void) { … } static inline bool selinux_policycap_extsockclass(void) { … } static inline bool selinux_policycap_alwaysnetwork(void) { … } static inline bool selinux_policycap_cgroupseclabel(void) { … } static inline bool selinux_policycap_nnp_nosuid_transition(void) { … } static inline bool selinux_policycap_genfs_seclabel_symlinks(void) { … } static inline bool selinux_policycap_ioctl_skip_cloexec(void) { … } static inline bool selinux_policycap_userspace_initial_context(void) { … } struct selinux_policy_convert_data; struct selinux_load_state { … }; int security_mls_enabled(void); int security_load_policy(void *data, size_t len, struct selinux_load_state *load_state); void selinux_policy_commit(struct selinux_load_state *load_state); void selinux_policy_cancel(struct selinux_load_state *load_state); int security_read_policy(void **data, size_t *len); int security_read_state_kernel(void **data, size_t *len); int security_policycap_supported(unsigned int req_cap); #define SEL_VEC_MAX … struct av_decision { … }; #define XPERMS_ALLOWED … #define XPERMS_AUDITALLOW … #define XPERMS_DONTAUDIT … #define security_xperm_set(perms, x) … #define security_xperm_test(perms, x) … struct extended_perms_data { … }; struct extended_perms_decision { … }; struct extended_perms { … }; /* definitions of av_decision.flags */ #define AVD_FLAGS_PERMISSIVE … void security_compute_av(u32 ssid, u32 tsid, u16 tclass, struct av_decision *avd, struct extended_perms *xperms); void security_compute_xperms_decision(u32 ssid, u32 tsid, u16 tclass, u8 driver, struct extended_perms_decision *xpermd); 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_sid_to_context_inval(u32 sid, char **scontext, u32 *scontext_len); int security_context_to_sid(const char *scontext, u32 scontext_len, u32 *out_sid, gfp_t gfp); int security_context_str_to_sid(const char *scontext, u32 *out_sid, gfp_t gfp); 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_ib_pkey_sid(u64 subnet_prefix, u16 pkey_num, u32 *out_sid); int security_ib_endport_sid(const char *dev_name, u8 port_num, 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_validate_transition_user(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(struct selinux_policy *policy, char ***classes, u32 *nclasses); int security_get_permissions(struct selinux_policy *policy, const char *class, char ***perms, u32 *nperms); int security_get_reject_unknown(void); int security_get_allow_unknown(void); #define SECURITY_FS_USE_XATTR … #define SECURITY_FS_USE_TRANS … #define SECURITY_FS_USE_TASK … #define SECURITY_FS_USE_GENFS … #define SECURITY_FS_USE_NONE … #define SECURITY_FS_USE_MNTPOINT … #define SECURITY_FS_USE_NATIVE … #define SECURITY_FS_USE_MAX … int security_fs_use(struct super_block *sb); int security_genfs_sid(const char *fstype, const char *path, u16 sclass, u32 *sid); int selinux_policy_genfs_sid(struct selinux_policy *policy, const char *fstype, const char *path, 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 … struct selinux_kernel_status { … } __packed; extern void selinux_status_update_setenforce(bool enforcing); extern void selinux_status_update_policyload(u32 seqno); extern void selinux_complete_init(void); extern struct path selinux_null; 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); extern void avtab_cache_init(void); extern void ebitmap_cache_init(void); extern void hashtab_cache_init(void); extern int security_sidtab_hash_stats(char *page); #endif /* _SELINUX_SECURITY_H_ */
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