btrfs-progs: corrupt-block: use on-stack path buffer in corrupt_dir_item

Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/btrfs-corrupt-block.c b/btrfs-corrupt-block.c
index 0287f0b..0b26903 100644 (file)
--- a/btrfs-corrupt-block.c
+++ b/btrfs-corrupt-block.c
@@ -475,7 +475,7 @@ static int corrupt_dir_item(struct btrfs_root *root, struct btrfs_key *key,
        struct btrfs_trans_handle *trans;
        struct btrfs_dir_item *di;
        struct btrfs_path *path;
-       char *name;
+       char name[PATH_MAX];
        struct btrfs_key location;
        struct btrfs_disk_key disk_key;
        unsigned long name_ptr;
@@ -514,17 +514,11 @@ static int corrupt_dir_item(struct btrfs_root *root, struct btrfs_key *key,
        switch (corrupt_field) {
        case BTRFS_DIR_ITEM_NAME:
                name_len = btrfs_dir_name_len(path->nodes[0], di);
-               name = malloc(name_len);
-               if (!name) {
-                       ret = -ENOMEM;
-                       goto out;
-               }
                name_ptr = (unsigned long)(di + 1);
                read_extent_buffer(path->nodes[0], name, name_ptr, name_len);
                name[0]++;
                write_extent_buffer(path->nodes[0], name, name_ptr, name_len);
                btrfs_mark_buffer_dirty(path->nodes[0]);
-               free(name);
                goto out;
        case BTRFS_DIR_ITEM_LOCATION_OBJECTID:
                btrfs_dir_item_key_to_cpu(path->nodes[0], di, &location);