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authorDuane Griffin <duaneg@dghda.com>2008-12-19 21:47:14 +0100
committerAl Viro <viro@zeniv.linux.org.uk>2009-01-01 00:07:39 +0100
commitb5ed3112b5f74c8ec1c7aa03a76c596635e85197 (patch)
tree943736d8c2502a8bebf71d86296bd98377235690
parentext2: ensure fast symlinks are NUL-terminated (diff)
downloadlinux-b5ed3112b5f74c8ec1c7aa03a76c596635e85197.tar.xz
linux-b5ed3112b5f74c8ec1c7aa03a76c596635e85197.zip
ext3: ensure fast symlinks are NUL-terminated
Ensure fast symlink targets are NUL-terminated, even if corrupted on-disk. Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Stephen Tweedie <sct@redhat.com> Cc: linux-ext4@vger.kernel.org Signed-off-by: Duane Griffin <duaneg@dghda.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
-rw-r--r--fs/ext3/inode.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index f8424ad89971..c4bdccf976b5 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -37,6 +37,7 @@
#include <linux/uio.h>
#include <linux/bio.h>
#include <linux/fiemap.h>
+#include <linux/namei.h>
#include "xattr.h"
#include "acl.h"
@@ -2817,9 +2818,11 @@ struct inode *ext3_iget(struct super_block *sb, unsigned long ino)
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 {
+ nd_terminate_link(ei->i_data, inode->i_size,
+ sizeof(ei->i_data) - 1);
+ } else {
inode->i_op = &ext3_symlink_inode_operations;
ext3_set_aops(inode);
}