[PATCH] fuse: add support for block device based filesystems

[linux-2.6] / fs / fuse / inode.c

diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 2bdc652b8b467f3aac5744ef2da3d41f0d7661a5..38cf97d6469c466360a35a32a3b532fd3a7b4636 100644 (file)
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -591,6 +591,14 @@ static int fuse_get_sb(struct file_system_type *fs_type,
        return get_sb_nodev(fs_type, flags, raw_data, fuse_fill_super, mnt);
 }
 
+static int fuse_get_sb_blk(struct file_system_type *fs_type,
+                          int flags, const char *dev_name,
+                          void *raw_data, struct vfsmount *mnt)
+{
+       return get_sb_bdev(fs_type, flags, dev_name, raw_data, fuse_fill_super,
+                          mnt);
+}
+
 static struct file_system_type fuse_fs_type = {
        .owner          = THIS_MODULE,
        .name           = "fuse",
@@ -598,6 +606,14 @@ static struct file_system_type fuse_fs_type = {
        .kill_sb        = kill_anon_super,
 };
 
+static struct file_system_type fuseblk_fs_type = {
+       .owner          = THIS_MODULE,
+       .name           = "fuseblk",
+       .get_sb         = fuse_get_sb_blk,
+       .kill_sb        = kill_block_super,
+       .fs_flags       = FS_REQUIRES_DEV,
+};
+
 static decl_subsys(fuse, NULL, NULL);
 static decl_subsys(connections, NULL, NULL);
 
@@ -617,24 +633,34 @@ static int __init fuse_fs_init(void)
 
        err = register_filesystem(&fuse_fs_type);
        if (err)
-               printk("fuse: failed to register filesystem\n");
-       else {
-               fuse_inode_cachep = kmem_cache_create("fuse_inode",
-                                                     sizeof(struct fuse_inode),
-                                                     0, SLAB_HWCACHE_ALIGN,
-                                                     fuse_inode_init_once, NULL);
-               if (!fuse_inode_cachep) {
-                       unregister_filesystem(&fuse_fs_type);
-                       err = -ENOMEM;
-               }
-       }
+               goto out;
+
+       err = register_filesystem(&fuseblk_fs_type);
+       if (err)
+               goto out_unreg;
+
+       fuse_inode_cachep = kmem_cache_create("fuse_inode",
+                                             sizeof(struct fuse_inode),
+                                             0, SLAB_HWCACHE_ALIGN,
+                                             fuse_inode_init_once, NULL);
+       err = -ENOMEM;
+       if (!fuse_inode_cachep)
+               goto out_unreg2;
+
+       return 0;
 
+ out_unreg2:
+       unregister_filesystem(&fuseblk_fs_type);
+ out_unreg:
+       unregister_filesystem(&fuse_fs_type);
+ out:
        return err;
 }
 
 static void fuse_fs_cleanup(void)
 {
        unregister_filesystem(&fuse_fs_type);
+       unregister_filesystem(&fuseblk_fs_type);
        kmem_cache_destroy(fuse_inode_cachep);
 }