[PATCH] hfs: add HFSX support

Add support for HFSX, which allows for case-sensitive filenames.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 14 insertions, 9 deletions

diff --git a/fs/hfsplus/btree.c b/fs/hfsplus/btree.c
index 671290663838..a67edfa34e9e 100644
--- a/fs/hfsplus/btree.c
+++ b/fs/hfsplus/btree.c
@@ -31,17 +31,8 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id)
 
         init_MUTEX(&tree->tree_lock);
         spin_lock_init(&tree->hash_lock);
-        /* Set the correct compare function */
         tree->sb = sb;
         tree->cnid = id;
-        if (id == HFSPLUS_EXT_CNID) {
-                tree->keycmp = hfsplus_ext_cmp_key;
-        } else if (id == HFSPLUS_CAT_CNID) {
-                tree->keycmp = hfsplus_cat_cmp_key;
-        } else {
-                printk(KERN_ERR "hfs: unknown B*Tree requested\n");
-                goto free_tree;
-        }
         tree->inode = iget(sb, id);
         if (!tree->inode)
                 goto free_tree;
@@ -64,6 +55,20 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id)
         tree->max_key_len = be16_to_cpu(head->max_key_len);
         tree->depth = be16_to_cpu(head->depth);
 
+        /* Set the correct compare function */
+        if (id == HFSPLUS_EXT_CNID) {
+                tree->keycmp = hfsplus_ext_cmp_key;
+        } else if (id == HFSPLUS_CAT_CNID) {
+                if ((HFSPLUS_SB(sb).flags & HFSPLUS_SB_HFSX) &&
+                    (head->key_type == HFSPLUS_KEY_BINARY))
+                        tree->keycmp = hfsplus_cat_bin_cmp_key;
+                else
+                        tree->keycmp = hfsplus_cat_case_cmp_key;
+        } else {
+                printk(KERN_ERR "hfs: unknown B*Tree requested\n");
+                goto fail_page;
+        }
+
         size = tree->node_size;
         if (!size || size & (size - 1))
                 goto fail_page;