read_write_all: avoid arithmetic on void pointers.

[ccan] / ccan / tdb2 / hash.c

diff --git a/ccan/tdb2/hash.c b/ccan/tdb2/hash.c
index 9ebc1fe260e0e126c32a711c3deaa34c5d052bb6..3db1ac2ebc7c85b9b50006138953ba38aafc7584 100644 (file)
--- a/ccan/tdb2/hash.c
+++ b/ccan/tdb2/hash.c
@@ -857,7 +857,8 @@ static enum TDB_ERROR chainlock(struct tdb_context *tdb, const TDB_DATA *key,
    contention - it cannot guarantee how many records will be locked */
 enum TDB_ERROR tdb_chainlock(struct tdb_context *tdb, TDB_DATA key)
 {
-       return chainlock(tdb, &key, F_WRLCK, TDB_LOCK_WAIT, "tdb_chainlock");
+       return tdb->last_error = chainlock(tdb, &key, F_WRLCK, TDB_LOCK_WAIT,
+                                          "tdb_chainlock");
 }
 
 enum TDB_ERROR tdb_chainunlock(struct tdb_context *tdb, TDB_DATA key)
@@ -872,5 +873,6 @@ enum TDB_ERROR tdb_chainunlock(struct tdb_context *tdb, TDB_DATA key)
        lockstart = hlock_range(group, &locksize);
 
        tdb_trace_1rec(tdb, "tdb_chainunlock", key);
-       return tdb_unlock_hashes(tdb, lockstart, locksize, F_WRLCK);
+       return tdb->last_error = tdb_unlock_hashes(tdb, lockstart, locksize,
+                                                  F_WRLCK);
 }