2 * A security identifier table (sidtab) is a hash table
3 * of security context structures indexed by SID value.
5 * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
13 u32 sid; /* security identifier */
14 struct context context; /* security context structure */
15 struct sidtab_node *next;
18 #define SIDTAB_HASH_BITS 7
19 #define SIDTAB_HASH_BUCKETS (1 << SIDTAB_HASH_BITS)
20 #define SIDTAB_HASH_MASK (SIDTAB_HASH_BUCKETS-1)
22 #define SIDTAB_SIZE SIDTAB_HASH_BUCKETS
25 struct sidtab_node **htable;
26 unsigned int nel; /* number of elements */
27 unsigned int next_sid; /* next SID to allocate */
28 unsigned char shutdown;
32 int sidtab_init(struct sidtab *s);
33 int sidtab_insert(struct sidtab *s, u32 sid, struct context *context);
34 struct context *sidtab_search(struct sidtab *s, u32 sid);
36 int sidtab_map(struct sidtab *s,
37 int (*apply) (u32 sid,
38 struct context *context,
42 void sidtab_map_remove_on_error(struct sidtab *s,
43 int (*apply) (u32 sid,
44 struct context *context,
48 int sidtab_context_to_sid(struct sidtab *s,
49 struct context *context,
52 void sidtab_hash_eval(struct sidtab *h, char *tag);
53 void sidtab_destroy(struct sidtab *s);
54 void sidtab_set(struct sidtab *dst, struct sidtab *src);
55 void sidtab_shutdown(struct sidtab *s);
57 #endif /* _SS_SIDTAB_H_ */