diff options
Diffstat (limited to 'source4/lib/tdb/common/tdb.c')
| -rw-r--r-- | source4/lib/tdb/common/tdb.c | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/source4/lib/tdb/common/tdb.c b/source4/lib/tdb/common/tdb.c index c1deef80cd..67d9f9903d 100644 --- a/source4/lib/tdb/common/tdb.c +++ b/source4/lib/tdb/common/tdb.c @@ -1070,26 +1070,12 @@ static tdb_off tdb_find(TDB_CONTEXT *tdb, TDB_DATA key, u32 hash, return TDB_ERRCODE(TDB_ERR_NOEXIST, 0); } -/* If they do lockkeys, check that this hash is one they locked */ -static int tdb_keylocked(TDB_CONTEXT *tdb, u32 hash) -{ - u32 i; - if (!tdb->lockedkeys) - return 1; - for (i = 0; i < tdb->lockedkeys[0]; i++) - if (tdb->lockedkeys[i+1] == hash) - return 1; - return TDB_ERRCODE(TDB_ERR_NOLOCK, 0); -} - /* As tdb_find, but if you succeed, keep the lock */ static tdb_off tdb_find_lock_hash(TDB_CONTEXT *tdb, TDB_DATA key, u32 hash, int locktype, struct list_struct *rec) { u32 rec_ptr; - if (!tdb_keylocked(tdb, hash)) - return 0; if (tdb_lock(tdb, BUCKET(hash), locktype) == -1) return 0; if (!(rec_ptr = tdb_find(tdb, key, hash, rec))) @@ -1291,10 +1277,6 @@ static int tdb_next_lock(TDB_CONTEXT *tdb, struct tdb_traverse_lock *tlock, { int want_next = (tlock->off != 0); - /* No traversal allows if you've called tdb_lockkeys() */ - if (tdb->lockedkeys) - return TDB_ERRCODE(TDB_ERR_NOLOCK, -1); - /* Lock each chain from the start one. */ for (; tlock->hash < tdb->header.hash_size; tlock->hash++) { if (tdb_lock(tdb, tlock->hash, F_WRLCK) == -1) @@ -1526,8 +1508,6 @@ int tdb_store(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf, int flag) /* find which hash bucket it is in */ hash = tdb->hash_fn(&key); - if (!tdb_keylocked(tdb, hash)) - return -1; if (tdb_lock(tdb, BUCKET(hash), F_WRLCK) == -1) return -1; @@ -1644,8 +1624,6 @@ int tdb_append(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA new_dbuf) /* find which hash bucket it is in */ hash = tdb->hash_fn(&key); - if (!tdb_keylocked(tdb, hash)) - return -1; if (tdb_lock(tdb, BUCKET(hash), F_WRLCK) == -1) return -1; @@ -1780,7 +1758,6 @@ TDB_CONTEXT *tdb_open_ex(const char *name, int hash_size, int tdb_flags, tdb->fd = -1; tdb->name = NULL; tdb->map_ptr = NULL; - tdb->lockedkeys = NULL; tdb->flags = tdb_flags; tdb->open_flags = open_flags; tdb->log_fn = log_fn?log_fn:null_log_fn; @@ -1968,7 +1945,6 @@ int tdb_close(TDB_CONTEXT *tdb) if (tdb->fd != -1) ret = close(tdb->fd); SAFE_FREE(tdb->locked); - SAFE_FREE(tdb->lockedkeys); /* Remove from contexts list */ for (i = &tdbs; *i; i = &(*i)->next) { @@ -1992,8 +1968,6 @@ int tdb_lockall(TDB_CONTEXT *tdb) /* There are no locks on read-only dbs */ if (tdb->read_only) return TDB_ERRCODE(TDB_ERR_LOCK, -1); - if (tdb->lockedkeys) - return TDB_ERRCODE(TDB_ERR_NOLOCK, -1); for (i = 0; i < tdb->header.hash_size; i++) if (tdb_lock(tdb, i, F_WRLCK)) break; @@ -2016,51 +1990,6 @@ void tdb_unlockall(TDB_CONTEXT *tdb) tdb_unlock(tdb, i, F_WRLCK); } -int tdb_lockkeys(TDB_CONTEXT *tdb, u32 number, TDB_DATA keys[]) -{ - u32 i, j, hash; - - /* Can't lock more keys if already locked */ - if (tdb->lockedkeys) - return TDB_ERRCODE(TDB_ERR_NOLOCK, -1); - if (!(tdb->lockedkeys = malloc(sizeof(u32) * (number+1)))) - return TDB_ERRCODE(TDB_ERR_OOM, -1); - /* First number in array is # keys */ - tdb->lockedkeys[0] = number; - - /* Insertion sort by bucket */ - for (i = 0; i < number; i++) { - hash = tdb->hash_fn(&keys[i]); - for (j = 0; j < i && BUCKET(tdb->lockedkeys[j+1]) < BUCKET(hash); j++); - memmove(&tdb->lockedkeys[j+2], &tdb->lockedkeys[j+1], sizeof(u32) * (i-j)); - tdb->lockedkeys[j+1] = hash; - } - /* Finally, lock in order */ - for (i = 0; i < number; i++) - if (tdb_lock(tdb, BUCKET(tdb->lockedkeys[i+1]), F_WRLCK)) - break; - - /* If error, release locks we have... */ - if (i < number) { - for ( j = 0; j < i; j++) - tdb_unlock(tdb, BUCKET(tdb->lockedkeys[j+1]), F_WRLCK); - SAFE_FREE(tdb->lockedkeys); - return TDB_ERRCODE(TDB_ERR_NOLOCK, -1); - } - return 0; -} - -/* Unlock the keys previously locked by tdb_lockkeys() */ -void tdb_unlockkeys(TDB_CONTEXT *tdb) -{ - u32 i; - if (!tdb->lockedkeys) - return; - for (i = 0; i < tdb->lockedkeys[0]; i++) - tdb_unlock(tdb, BUCKET(tdb->lockedkeys[i+1]), F_WRLCK); - SAFE_FREE(tdb->lockedkeys); -} - /* lock/unlock one hash chain. This is meant to be used to reduce contention - it cannot guarantee how many records will be locked */ int tdb_chainlock(TDB_CONTEXT *tdb, TDB_DATA key) |