From: David Sterba <dsterba@suse.com>
Date: Fri, 6 Nov 2015 17:27:55 +0000 (+0100)
Subject: btrfs-progs: corrupt-block: use on-stack path buffer in corrupt_dir_item
X-Git-Tag: upstream/4.16.1~1871
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=575ca96425b50c5d5bd98767ed30c182ebf37411;p=platform%2Fupstream%2Fbtrfs-progs.git

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
--- 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);