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/* Author : Stephen Smalley, <sds@epoch.ncsc.mil> */
/* 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>
#include <sys/cdefs.h>
__BEGIN_DECLS
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);
__END_DECLS
#endif /* _SIDTAB_H_ */
/* FLASK */