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authorJeremy Allison <jra@samba.org>2007-06-07 00:00:45 +0000
committerGerald (Jerry) Carter <jerry@samba.org>2007-10-10 12:23:10 -0500
commit68f2b1d9f6851a4582b0bb9f8add8c9d458b157f (patch)
tree7368ef9835f474e4ec83ced2969ba1e559e9cb2d
parent4a99ee023609a3e753bb66e1fcd019a97447d9dd (diff)
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r23370: Traverse in tdb wasn't consistently using the
travlocks.lock_rw for lock read/write types, it was sometimes using it (tdb_next_lock) and sometimes explicitly using F_WRLCK instead. Change this to consistently use travlocks.lock_rw only. I'm pretty sure about this fix (else I woudn't be checking this in :-) but tridge and Volker please review. Jeremy. (This used to be commit d0b64567630ec02eb437aa713847bb23a8be8a60)
-rw-r--r--source3/lib/tdb/common/traverse.c18
1 files changed, 10 insertions, 8 deletions
diff --git a/source3/lib/tdb/common/traverse.c b/source3/lib/tdb/common/traverse.c
index fb2371d403..69f3bd68d1 100644
--- a/source3/lib/tdb/common/traverse.c
+++ b/source3/lib/tdb/common/traverse.c
@@ -263,12 +263,15 @@ TDB_DATA tdb_firstkey(struct tdb_context *tdb)
tdb->travlocks.off = tdb->travlocks.hash = 0;
tdb->travlocks.lock_rw = F_RDLCK;
+ /* Grab first record: locks chain and returns record. */
if (tdb_next_lock(tdb, &tdb->travlocks, &rec) <= 0)
return tdb_null;
/* now read the key */
key.dsize = rec.key_len;
key.dptr =tdb_alloc_read(tdb,tdb->travlocks.off+sizeof(rec),key.dsize);
- if (tdb_unlock(tdb, BUCKET(tdb->travlocks.hash), F_WRLCK) != 0)
+
+ /* Unlock the hash chain of the record we just read. */
+ if (tdb_unlock(tdb, tdb->travlocks.hash, tdb->travlocks.lock_rw) != 0)
TDB_LOG((tdb, TDB_DEBUG_FATAL, "tdb_firstkey: error occurred while tdb_unlocking!\n"));
return key;
}
@@ -283,7 +286,7 @@ TDB_DATA tdb_nextkey(struct tdb_context *tdb, TDB_DATA oldkey)
/* Is locked key the old key? If so, traverse will be reliable. */
if (tdb->travlocks.off) {
- if (tdb_lock(tdb,tdb->travlocks.hash,F_WRLCK))
+ if (tdb_lock(tdb,tdb->travlocks.hash,tdb->travlocks.lock_rw))
return tdb_null;
if (tdb_rec_read(tdb, tdb->travlocks.off, &rec) == -1
|| !(k = tdb_alloc_read(tdb,tdb->travlocks.off+sizeof(rec),
@@ -294,7 +297,7 @@ TDB_DATA tdb_nextkey(struct tdb_context *tdb, TDB_DATA oldkey)
SAFE_FREE(k);
return tdb_null;
}
- if (tdb_unlock(tdb, tdb->travlocks.hash, F_WRLCK) != 0) {
+ if (tdb_unlock(tdb, tdb->travlocks.hash, tdb->travlocks.lock_rw) != 0) {
SAFE_FREE(k);
return tdb_null;
}
@@ -306,7 +309,7 @@ TDB_DATA tdb_nextkey(struct tdb_context *tdb, TDB_DATA oldkey)
if (!tdb->travlocks.off) {
/* No previous element: do normal find, and lock record */
- tdb->travlocks.off = tdb_find_lock_hash(tdb, oldkey, tdb->hash_fn(&oldkey), F_WRLCK, &rec);
+ tdb->travlocks.off = tdb_find_lock_hash(tdb, oldkey, tdb->hash_fn(&oldkey), tdb->travlocks.lock_rw, &rec);
if (!tdb->travlocks.off)
return tdb_null;
tdb->travlocks.hash = BUCKET(rec.full_hash);
@@ -317,19 +320,18 @@ TDB_DATA tdb_nextkey(struct tdb_context *tdb, TDB_DATA oldkey)
}
oldhash = tdb->travlocks.hash;
- /* Grab next record: locks chain and returned record,
+ /* Grab next record: locks chain and returns record,
unlocks old record */
if (tdb_next_lock(tdb, &tdb->travlocks, &rec) > 0) {
key.dsize = rec.key_len;
key.dptr = tdb_alloc_read(tdb, tdb->travlocks.off+sizeof(rec),
key.dsize);
/* Unlock the chain of this new record */
- if (tdb_unlock(tdb, tdb->travlocks.hash, F_WRLCK) != 0)
+ if (tdb_unlock(tdb, tdb->travlocks.hash, tdb->travlocks.lock_rw) != 0)
TDB_LOG((tdb, TDB_DEBUG_FATAL, "tdb_nextkey: WARNING tdb_unlock failed!\n"));
}
/* Unlock the chain of old record */
- if (tdb_unlock(tdb, BUCKET(oldhash), F_WRLCK) != 0)
+ if (tdb_unlock(tdb, BUCKET(oldhash), tdb->travlocks.lock_rw) != 0)
TDB_LOG((tdb, TDB_DEBUG_FATAL, "tdb_nextkey: WARNING tdb_unlock failed!\n"));
return key;
}
-