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 <shaggy@linux.vnet.ibm.com>
Reported-by: Duane Griffin <duaneg@dghda.com>
diff --git a/fs/jfs/inode.c b/fs/jfs/inode.c
index 2103397..b00ee9f 100644
--- a/fs/jfs/inode.c
+++ b/fs/jfs/inode.c
@@ -59,8 +59,14 @@
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);