linux-ext4 - + ext3-ensure-link-targets-are-null-terminated.patch added to -mm tree

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Message-Id: <200812120332.mBC3WqJg009789@imap1.linux-foundation.org>
Date:	Thu, 11 Dec 2008 19:32:52 -0800
From:	akpm@...ux-foundation.org
To:	mm-commits@...r.kernel.org
Cc:	duaneg@...da.com, linux-ext4@...r.kernel.org
Subject: + ext3-ensure-link-targets-are-null-terminated.patch added to -mm tree


The patch titled
     ext3: ensure link targets are NULL-terminated
has been added to the -mm tree.  Its filename is
     ext3-ensure-link-targets-are-null-terminated.patch

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*** Remember to use Documentation/SubmitChecklist when testing your code ***

See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this

The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/

------------------------------------------------------
Subject: ext3: ensure link targets are NULL-terminated
From: "Duane Griffin" <duaneg@...da.com>

Ensure link targets are NUL-terminated, even if corrupted on-disk.

Signed-off-by: Duane Griffin <duaneg@...da.com>
Cc: <linux-ext4@...r.kernel.org>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
---

 fs/ext3/inode.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff -puN fs/ext3/inode.c~ext3-ensure-link-targets-are-null-terminated fs/ext3/inode.c
--- a/fs/ext3/inode.c~ext3-ensure-link-targets-are-null-terminated
+++ a/fs/ext3/inode.c
@@ -2817,9 +2817,10 @@ struct inode *ext3_iget(struct super_blo
 		inode->i_op = &ext3_dir_inode_operations;
 		inode->i_fop = &ext3_dir_operations;
 	} else if (S_ISLNK(inode->i_mode)) {
-		if (ext3_inode_is_fast_symlink(inode))
+		if (ext3_inode_is_fast_symlink(inode)) {
 			inode->i_op = &ext3_fast_symlink_inode_operations;
-		else {
+			((char *) ei->i_data)[inode->i_size] = '\0';
+		} else {
 			inode->i_op = &ext3_symlink_inode_operations;
 			ext3_set_aops(inode);
 		}
_

Patches currently in -mm which might be from duaneg@...da.com are

ext4-dont-inherit-inappropriate-inode-flags-from-parent.patch
ext4-tighten-restrictions-on-inode-flags.patch
ext2-dont-inherit-inappropriate-inode-flags-from-parent.patch
ext2-tighten-restrictions-on-inode-flags.patch
ext3-dont-inherit-inappropriate-inode-flags-from-parent.patch
ext3-tighten-restrictions-on-inode-flags.patch
ext3-ensure-link-targets-are-null-terminated.patch

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