/* Author : Stephen Smalley, <stephen.smalley.work@gmail.com> */ /* FLASK */ /* * A security identifier table (sidtab) is a hash table * of security context structures indexed by SID value. */ #ifndef _SEPOL_POLICYDB_SIDTAB_H_ #define _SEPOL_POLICYDB_SIDTAB_H_ #include <sepol/policydb/context.h> #ifdef __cplusplus extern "C" { #endif typedef struct sidtab_node { sepol_security_id_t sid; /* security identifier */ context_struct_t context; /* security context structure */ struct sidtab_node *next; } sidtab_node_t; typedef struct sidtab_node *sidtab_ptr_t; #define SIDTAB_HASH_BITS 7 #define SIDTAB_HASH_BUCKETS (1 << SIDTAB_HASH_BITS) #define SIDTAB_HASH_MASK (SIDTAB_HASH_BUCKETS-1) #define SIDTAB_SIZE SIDTAB_HASH_BUCKETS typedef struct { sidtab_ptr_t *htable; unsigned int nel; /* number of elements */ unsigned int next_sid; /* next SID to allocate */ unsigned char shutdown; } sidtab_t; extern int sepol_sidtab_init(sidtab_t * s); extern int sepol_sidtab_insert(sidtab_t * s, sepol_security_id_t sid, context_struct_t * context); extern context_struct_t *sepol_sidtab_search(sidtab_t * s, sepol_security_id_t sid); extern int sepol_sidtab_map(sidtab_t * s, int (*apply) (sepol_security_id_t sid, context_struct_t * context, void *args), void *args); extern void sepol_sidtab_map_remove_on_error(sidtab_t * s, int (*apply) (sepol_security_id_t s, context_struct_t * context, void *args), void *args); extern int sepol_sidtab_context_to_sid(sidtab_t * s, /* IN */ context_struct_t * context, /* IN */ sepol_security_id_t * sid); /* OUT */ extern void sepol_sidtab_hash_eval(sidtab_t * h, char *tag); extern void sepol_sidtab_destroy(sidtab_t * s); extern void sepol_sidtab_set(sidtab_t * dst, sidtab_t * src); extern void sepol_sidtab_shutdown(sidtab_t * s); #ifdef __cplusplus } #endif #endif /* _SIDTAB_H_ */ /* FLASK */ SIMPAN PERUBAHAN