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Plug rpage leak in cursor_set
This commit is contained in:
Howard Chu 2016-08-11 21:04:36 +01:00
parent cb17c4da4f
commit 7442dd084a
1 changed files with 12 additions and 6 deletions
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18
external/db_drivers/liblmdb/mdb.c vendored
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@ -6599,8 +6599,14 @@ mdb_cursor_set(MDB_cursor *mc, MDB_val *key, MDB_val *data,
if (key->mv_size == 0)
return MDB_BAD_VALSIZE;
if (mc->mc_xcursor)
if (mc->mc_xcursor) {
#ifdef MDB_VL32
if (mc->mc_xcursor->mx_cursor.mc_flags & C_INITIALIZED) {
mdb_cursor_unref(&mc->mc_xcursor->mx_cursor);
}
#endif
mc->mc_xcursor->mx_cursor.mc_flags &= ~(C_INITIALIZED|C_EOF);
}
/* See if we're already on the right page */
if (mc->mc_flags & C_INITIALIZED) {
@ -6732,11 +6738,6 @@ set1:
return MDB_SUCCESS;
}
#ifdef MDB_VL32
if (mc->mc_xcursor && mc->mc_xcursor->mx_cursor.mc_flags & C_INITIALIZED) {
mdb_cursor_unref(&mc->mc_xcursor->mx_cursor);
}
#endif
if (F_ISSET(leaf->mn_flags, F_DUPDATA)) {
mdb_xcursor_init1(mc, leaf);
}
@ -8311,6 +8312,11 @@ mdb_cursor_count(MDB_cursor *mc, mdb_size_t *countp)
void
mdb_cursor_close(MDB_cursor *mc)
{
#ifdef MDB_VL32
if (mc) {
mdb_cursor_unref(mc);
}
#endif
if (mc && !mc->mc_backup) {
/* remove from txn, if tracked */
if ((mc->mc_flags & C_UNTRACK) && mc->mc_txn->mt_cursors) {