From: Eric Sandeen <sandeen@redhat.com>
Date: Tue, 8 Apr 2008 03:00:58 +0000 (-0500)
Subject: Fix ext2fs_extent_insert when at last extent in node
X-Git-Tag: v1.41-WIP-0427~21
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5e057d5cad3e0f3bd9faa3c1124a3a592cb32919;p=thirdparty%2Fe2fsprogs.git

Fix ext2fs_extent_insert when at last extent in node

ext2fs_extent_insert() only did a memmove if path->left
was > 0, but if we are at the last extent in the node,
path->left == 0, and this node must be moved before the
current extent is replaced with the newly inserted node.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
---

diff --git a/lib/ext2fs/extent.c b/lib/ext2fs/extent.c
index 76f6f6563..9f19e7b61 100644
--- a/lib/ext2fs/extent.c
+++ b/lib/ext2fs/extent.c
@@ -689,7 +689,7 @@ errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags,
 
 	path->curr = ix;
 
-	if (path->left > 0)
+	if (path->left >= 0)
 		memmove(ix + 1, ix,
 			(path->left+1) * sizeof(struct ext3_extent_idx));
 	path->left++;