/* delete an entry in the database given a key */ static int tdb_delete_hash(struct tdb_context *tdb, TDB_DATA key, uint32_t hash) { tdb_off_t rec_ptr; struct tdb_record rec; int ret; rec_ptr = tdb_find_lock_hash(tdb, key, hash, F_WRLCK, &rec); if (rec_ptr == 0) { return -1; } if (tdb->max_dead_records != 0) { uint32_t magic = TDB_DEAD_MAGIC; /* * Allow for some dead records per hash chain, mainly for * tdb's with a very high create/delete rate like locking.tdb. */ if (tdb_count_dead(tdb, hash) >= tdb->max_dead_records) { /* * Don't let the per-chain freelist grow too large, * delete all existing dead records */ tdb_purge_dead(tdb, hash); } /* * Just mark the record as dead. */ ret = tdb_ofs_write( tdb, rec_ptr + offsetof(struct tdb_record, magic), &magic); }
/* delete an entry in the database given a key */ static int tdb_delete_hash(struct tdb_context *tdb, TDB_DATA key, u32 hash) { tdb_off_t rec_ptr; struct list_struct rec; int ret; if (tdb->max_dead_records != 0) { /* * Allow for some dead records per hash chain, mainly for * tdb's with a very high create/delete rate like locking.tdb. */ if (tdb_lock(tdb, BUCKET(hash), F_WRLCK) == -1) return -1; if (tdb_count_dead(tdb, hash) >= tdb->max_dead_records) { /* * Don't let the per-chain freelist grow too large, * delete all existing dead records */ tdb_purge_dead(tdb, hash); } if (!(rec_ptr = tdb_find(tdb, key, hash, &rec))) { tdb_unlock(tdb, BUCKET(hash), F_WRLCK); return -1; } /* * Just mark the record as dead. */ rec.magic = TDB_DEAD_MAGIC; ret = tdb_rec_write(tdb, rec_ptr, &rec); } else { if (!(rec_ptr = tdb_find_lock_hash(tdb, key, hash, F_WRLCK, &rec))) return -1; ret = tdb_do_delete(tdb, rec_ptr, &rec); } if (ret == 0) { tdb_increment_seqnum(tdb); } if (tdb_unlock(tdb, BUCKET(rec.full_hash), F_WRLCK) != 0) TDB_LOG((tdb, TDB_DEBUG_WARNING, "tdb_delete: WARNING tdb_unlock failed!\n")); return ret; }