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| author | Christoph Hellwig <hch@tuxera.com> | 2010-10-14 09:54:23 -0400 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2010-10-14 09:54:23 -0400 |
| commit | 13571a6977f821fab7d9c3cc5f75da52b7732e40 (patch) | |
| tree | 32b50f122fc37256d3ff8ad40ec905d0c3e540ea /fs/hfsplus/btree.c | |
| parent | 9250f925972d03ccc0c0a4dd4e9b794d2ef6d52b (diff) | |
| download | lwn-13571a6977f821fab7d9c3cc5f75da52b7732e40.tar.gz lwn-13571a6977f821fab7d9c3cc5f75da52b7732e40.zip | |
hfsplus: validate btree flags
Signed-off-by: Christoph Hellwig <hch@tuxera.com>
Diffstat (limited to 'fs/hfsplus/btree.c')
| -rw-r--r-- | fs/hfsplus/btree.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/hfsplus/btree.c b/fs/hfsplus/btree.c index 82caff215e08..22e4d4e32999 100644 --- a/fs/hfsplus/btree.c +++ b/fs/hfsplus/btree.c @@ -71,6 +71,11 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id) tree->max_key_len); goto fail_page; } + if (tree->attributes & HFS_TREE_VARIDXKEYS) { + printk(KERN_ERR "hfs: invalid extent btree flag\n"); + goto fail_page; + } + tree->keycmp = hfsplus_ext_cmp_key; break; case HFSPLUS_CAT_CNID: @@ -79,6 +84,10 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id) tree->max_key_len); goto fail_page; } + if (!(tree->attributes & HFS_TREE_VARIDXKEYS)) { + printk(KERN_ERR "hfs: invalid catalog btree flag\n"); + goto fail_page; + } if (test_bit(HFSPLUS_SB_HFSX, &HFSPLUS_SB(sb)->flags) && (head->key_type == HFSPLUS_KEY_BINARY)) @@ -93,6 +102,11 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id) goto fail_page; } + if (!(tree->attributes & HFS_TREE_BIGKEYS)) { + printk(KERN_ERR "hfs: invalid btree flag\n"); + goto fail_page; + } + size = tree->node_size; if (!is_power_of_2(size)) goto fail_page; |