Function sepgsql_avc_lookup

contrib/sepgsql/uavc.c:296–322

* sepgsql_avc_lookup * * Look up a cache entry that matches the supplied security contexts and * object class. If not found, create a new cache entry. */

 * object class.  If not found, create a new cache entry.
 */
static avc_cache *
sepgsql_avc_lookup(const char *scontext, const char *tcontext, uint16 tclass)
{
	avc_cache  *cache;
	ListCell   *cell;
	uint32		hash;
	int			index;

	hash = sepgsql_avc_hash(scontext, tcontext, tclass);
	index = hash % AVC_NUM_SLOTS;

	foreach(cell, avc_slots[index])
	{
		cache = lfirst(cell);

		if (cache->hash == hash &&
			cache->tclass == tclass &&
			strcmp(cache->tcontext, tcontext) == 0 &&
			strcmp(cache->scontext, scontext) == 0)
		{
			cache->hot_cache = true;
			return cache;
		}
	}
	/* not found, so insert a new cache */
	return sepgsql_avc_compute(scontext, tcontext, tclass);
}

/*
 * sepgsql_avc_check_perms(_label)