* grub-core/fs/btrfs.c (GRUB_BTRFS_ITEM_TYPE_INODE_REF): New enum value.

	(find_path): Handle "." and "..".

diff --git a/ChangeLog b/ChangeLog
index 77a2c482033fba0638d078c3a1097ebe22d4b888..36d0f6b9baa76f89a3f876c40b49fd380afd0902 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2012-05-27  Vladimir Serbinenko  <phcoder@gmail.com>
+
+       * grub-core/fs/btrfs.c (GRUB_BTRFS_ITEM_TYPE_INODE_REF): New enum value.
+       (find_path): Handle "." and "..".
+
 2012-05-27  Vladimir Serbinenko  <phcoder@gmail.com>
 
        * grub-core/fs/affs.c (grub_affs_file): New field hardlink.

diff --git a/grub-core/fs/btrfs.c b/grub-core/fs/btrfs.c
index 9e41fbb9fc5c84176f9357fac1b234cde77a2c89..a993f0747b0ce1472b5edd71c1a14f4b714530d4 100644 (file)
--- a/grub-core/fs/btrfs.c
+++ b/grub-core/fs/btrfs.c
@@ -106,15 +106,20 @@ struct grub_btrfs_data
   struct grub_btrfs_extent_data *extent;
 };
 
+enum
+  {
+    GRUB_BTRFS_ITEM_TYPE_INODE_ITEM = 0x01,
+    GRUB_BTRFS_ITEM_TYPE_INODE_REF = 0x0c,
+    GRUB_BTRFS_ITEM_TYPE_DIR_ITEM = 0x54,
+    GRUB_BTRFS_ITEM_TYPE_EXTENT_ITEM = 0x6c,
+    GRUB_BTRFS_ITEM_TYPE_ROOT_ITEM = 0x84,
+    GRUB_BTRFS_ITEM_TYPE_DEVICE = 0xd8,
+    GRUB_BTRFS_ITEM_TYPE_CHUNK = 0xe4
+  };
+
 struct grub_btrfs_key
 {
   grub_uint64_t object_id;
-#define GRUB_BTRFS_ITEM_TYPE_INODE_ITEM 0x01
-#define GRUB_BTRFS_ITEM_TYPE_DIR_ITEM 0x54
-#define GRUB_BTRFS_ITEM_TYPE_EXTENT_ITEM 0x6c
-#define GRUB_BTRFS_ITEM_TYPE_ROOT_ITEM 0x84
-#define GRUB_BTRFS_ITEM_TYPE_DEVICE 0xd8
-#define GRUB_BTRFS_ITEM_TYPE_CHUNK 0xe4
   grub_uint8_t type;
   grub_uint64_t offset;
 } __attribute__ ((packed));
@@ -1232,6 +1237,48 @@ find_path (struct grub_btrfs_data *data,
          return grub_error (GRUB_ERR_BAD_FILE_TYPE, N_("not a directory"));
        }
 
+      if (ctokenlen == 1 && ctoken[0] == '.')
+       {
+         if (!skip_default)
+           path = slash;
+         skip_default = 0;
+       continue;
+       }
+      if (ctokenlen == 2 && ctoken[0] == '.' && ctoken[1] == '.')
+       {
+         key->type = GRUB_BTRFS_ITEM_TYPE_INODE_REF;
+         key->offset = -1;
+
+         err = lower_bound (data, key, &key_out, *tree, &elemaddr, &elemsize,
+                            NULL, 0);
+         if (err)
+           {
+             grub_free (direl);
+             grub_free (path_alloc);
+             grub_free (origpath);
+             return err;
+           }
+
+         if (key_out.type != key->type
+             || key->object_id != key_out.object_id)
+           {
+             grub_free (direl);
+             grub_free (path_alloc);
+             err = grub_error (GRUB_ERR_FILE_NOT_FOUND, N_("file `%s' not found"), origpath);
+             grub_free (origpath);
+             return err;
+           }
+
+         *type = GRUB_BTRFS_DIR_ITEM_TYPE_DIRECTORY;
+         key->object_id = key_out.offset;
+
+         if (!skip_default)
+           path = slash;
+         skip_default = 0;
+
+         continue;
+       }
+
       key->type = GRUB_BTRFS_ITEM_TYPE_DIR_ITEM;
       key->offset = grub_cpu_to_le64 (~grub_getcrc32c (1, ctoken, ctokenlen));