From d69e83d99cf87e3328c47bb54684360e32aef17d Mon Sep 17 00:00:00 2001 From: Dave Kleikamp Date: Tue, 16 Dec 2008 10:21:34 -0600 Subject: jfs: ensure symlinks are NUL-terminated This is an alternate fix for a bug reported and fixed by Duane Griffin. Signed-off-by: Dave Kleikamp Reported-by: Duane Griffin --- fs/jfs/inode.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/fs/jfs/inode.c b/fs/jfs/inode.c index 210339784b56..b00ee9f05a06 100644 --- a/fs/jfs/inode.c +++ b/fs/jfs/inode.c @@ -59,8 +59,14 @@ struct inode *jfs_iget(struct super_block *sb, unsigned long ino) if (inode->i_size >= IDATASIZE) { inode->i_op = &page_symlink_inode_operations; inode->i_mapping->a_ops = &jfs_aops; - } else + } else { inode->i_op = &jfs_symlink_inode_operations; + /* + * The inline data should be null-terminated, but + * don't let on-disk corruption crash the kernel + */ + JFS_IP(inode)->i_inline[inode->i_size] = '\0'; + } } else { inode->i_op = &jfs_file_inode_operations; init_special_inode(inode, inode->i_mode, inode->i_rdev); -- cgit v1.2.3