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| author | Duane Griffin <duaneg@dghda.com> | 2008-12-19 20:47:13 +0000 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2008-12-31 18:07:39 -0500 |
| commit | 8d6d0c4da2dbbe0a69fea3692146af39f139f8b4 (patch) | |
| tree | 306ab9a840c9e37c1cdc5d56a8f376fec85fd21d /fs/ext2/inode.c | |
| parent | ebd09abbd9699f328165aee50a070403fbf55a37 (diff) | |
| download | linux-8d6d0c4da2dbbe0a69fea3692146af39f139f8b4.tar.gz linux-8d6d0c4da2dbbe0a69fea3692146af39f139f8b4.tar.bz2 linux-8d6d0c4da2dbbe0a69fea3692146af39f139f8b4.zip | |
ext2: 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>
Signed-off-by: Duane Griffin <duaneg@dghda.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/ext2/inode.c')
| -rw-r--r-- | fs/ext2/inode.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c index 7658b33e2653..02b39a5deb74 100644 --- a/fs/ext2/inode.c +++ b/fs/ext2/inode.c @@ -32,6 +32,7 @@ #include <linux/buffer_head.h> #include <linux/mpage.h> #include <linux/fiemap.h> +#include <linux/namei.h> #include "ext2.h" #include "acl.h" #include "xip.h" @@ -1286,9 +1287,11 @@ struct inode *ext2_iget (struct super_block *sb, unsigned long ino) else inode->i_mapping->a_ops = &ext2_aops; } else if (S_ISLNK(inode->i_mode)) { - if (ext2_inode_is_fast_symlink(inode)) + if (ext2_inode_is_fast_symlink(inode)) { inode->i_op = &ext2_fast_symlink_inode_operations; - else { + nd_terminate_link(ei->i_data, inode->i_size, + sizeof(ei->i_data) - 1); + } else { inode->i_op = &ext2_symlink_inode_operations; if (test_opt(inode->i_sb, NOBH)) inode->i_mapping->a_ops = &ext2_nobh_aops; |