pandora: defconfig: update

[pandora-kernel.git] / fs / hfs / btree.c

diff --git a/fs/hfs/btree.c b/fs/hfs/btree.c
index 3ebc437..1cbdeea 100644 (file)
--- a/fs/hfs/btree.c
+++ b/fs/hfs/btree.c
@@ -46,11 +46,26 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id, btree_keycmp ke
        case HFS_EXT_CNID:
                hfs_inode_read_fork(tree->inode, mdb->drXTExtRec, mdb->drXTFlSize,
                                    mdb->drXTFlSize, be32_to_cpu(mdb->drXTClpSiz));
+               if (HFS_I(tree->inode)->alloc_blocks >
+                                       HFS_I(tree->inode)->first_blocks) {
+                       printk(KERN_ERR "hfs: invalid btree extent records\n");
+                       unlock_new_inode(tree->inode);
+                       goto free_inode;
+               }
+
                tree->inode->i_mapping->a_ops = &hfs_btree_aops;
                break;
        case HFS_CAT_CNID:
                hfs_inode_read_fork(tree->inode, mdb->drCTExtRec, mdb->drCTFlSize,
                                    mdb->drCTFlSize, be32_to_cpu(mdb->drCTClpSiz));
+
+               if (!HFS_I(tree->inode)->first_blocks) {
+                       printk(KERN_ERR "hfs: invalid btree extent records "
+                                                               "(0 size).\n");
+                       unlock_new_inode(tree->inode);
+                       goto free_inode;
+               }
+
                tree->inode->i_mapping->a_ops = &hfs_btree_aops;
                break;
        default:
@@ -59,11 +74,6 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id, btree_keycmp ke
        }
        unlock_new_inode(tree->inode);
 
-       if (!HFS_I(tree->inode)->first_blocks) {
-               printk(KERN_ERR "hfs: invalid btree extent records (0 size).\n");
-               goto free_inode;
-       }
-
        mapping = tree->inode->i_mapping;
        page = read_mapping_page(mapping, 0, NULL);
        if (IS_ERR(page))