diff options
Diffstat (limited to 'fs/hfsplus/btree.c')
| -rw-r--r-- | fs/hfsplus/btree.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/fs/hfsplus/btree.c b/fs/hfsplus/btree.c index 9e1732a2b92a..229f25dc7c49 100644 --- a/fs/hfsplus/btree.c +++ b/fs/hfsplus/btree.c @@ -344,7 +344,7 @@ static struct hfs_bnode *hfs_bmap_new_bmap(struct hfs_bnode *prev, u32 idx) } /* Make sure @tree has enough space for the @rsvd_nodes */ -int hfs_bmap_reserve(struct hfs_btree *tree, int rsvd_nodes) +int hfs_bmap_reserve(struct hfs_btree *tree, u32 rsvd_nodes) { struct inode *inode = tree->inode; struct hfsplus_inode_info *hip = HFSPLUS_I(inode); @@ -393,6 +393,12 @@ struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *tree) len = hfs_brec_lenoff(node, 2, &off16); off = off16; + if (!is_bnode_offset_valid(node, off)) { + hfs_bnode_put(node); + return ERR_PTR(-EIO); + } + len = check_and_correct_requested_length(node, off, len); + off += node->page_offset; pagep = node->page + (off >> PAGE_SHIFT); data = kmap_local_page(*pagep); @@ -428,7 +434,7 @@ struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *tree) kunmap_local(data); nidx = node->next; if (!nidx) { - hfs_dbg(BNODE_MOD, "create new bmap node\n"); + hfs_dbg("create new bmap node\n"); next_node = hfs_bmap_new_bmap(node, idx); } else next_node = hfs_bnode_find(tree, nidx); @@ -454,7 +460,7 @@ void hfs_bmap_free(struct hfs_bnode *node) u32 nidx; u8 *data, byte, m; - hfs_dbg(BNODE_MOD, "btree_free_node: %u\n", node->this); + hfs_dbg("node %u\n", node->this); BUG_ON(!node->this); tree = node->tree; nidx = node->this; |