X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=fs%2Fhfs%2Fbtree.c;h=24cf6fc4302122366ed444c7f5f3344b7cae7382;hb=94dc7ad5502e7d74e2fd74651743f5f1773aa1fe;hp=8a3a650abc87a9ed4520318a811fb76619933a7e;hpb=9028780a3e6d2c3dd940e89b377765cca008b6df;p=linux-2.6-omap-h63xx.git

diff --git a/fs/hfs/btree.c b/fs/hfs/btree.c
index 8a3a650abc8..24cf6fc4302 100644
--- a/fs/hfs/btree.c
+++ b/fs/hfs/btree.c
@@ -61,7 +61,7 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id, btree_keycmp ke
 	mapping = tree->inode->i_mapping;
 	page = read_mapping_page(mapping, 0, NULL);
 	if (IS_ERR(page))
-		goto free_tree;
+		goto free_inode;
 
 	/* Load the header */
 	head = (struct hfs_btree_header_rec *)(kmap(page) + sizeof(struct hfs_bnode_desc));
@@ -81,6 +81,25 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id, btree_keycmp ke
 		goto fail_page;
 	if (!tree->node_count)
 		goto fail_page;
+	switch (id) {
+	case HFS_EXT_CNID:
+		if (tree->max_key_len != HFS_MAX_EXT_KEYLEN) {
+			printk(KERN_ERR "hfs: invalid extent max_key_len %d\n",
+				tree->max_key_len);
+			goto fail_page;
+		}
+		break;
+	case HFS_CAT_CNID:
+		if (tree->max_key_len != HFS_MAX_CAT_KEYLEN) {
+			printk(KERN_ERR "hfs: invalid catalog max_key_len %d\n",
+				tree->max_key_len);
+			goto fail_page;
+		}
+		break;
+	default:
+		BUG();
+	}
+
 	tree->node_size_shift = ffs(size) - 1;
 	tree->pages_per_bnode = (tree->node_size + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
 
@@ -88,11 +107,12 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id, btree_keycmp ke
 	page_cache_release(page);
 	return tree;
 
- fail_page:
-	tree->inode->i_mapping->a_ops = &hfs_aops;
+fail_page:
 	page_cache_release(page);
- free_tree:
+free_inode:
+	tree->inode->i_mapping->a_ops = &hfs_aops;
 	iput(tree->inode);
+free_tree:
 	kfree(tree);
 	return NULL;
 }