fatblock: Program to offer dir as FAT32 filesystem using ublock

Change-Id: I6712e062e17b02c453ce89a52000cd8bc3ee810d

1 files changed, 54 insertions, 0 deletions

diff --git a/fatblock/fs.h b/fatblock/fs.h
new file mode 100644
index 00000000..c58decc5
--- /dev/null
+++ b/fatblock/fs.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FS_H
+#define FS_H
+
+#include "extent.h"
+#include "fat.h"
+#include "types.h"
+
+struct fs {
+	uint16_t cluster_size;
+
+	cluster_t num_clusters;
+	cluster_t next_cluster;
+	struct extent *extents;
+
+	struct fat_boot_sector boot;
+	struct extent boot_extent;
+	struct extent backup_boot_extent;
+
+	struct fat_info_sector info;
+	struct extent info_extent;
+
+	struct extent fat_extent;
+	fat_entry_t *fat;
+	offset_t fat_size;
+
+	offset_t data_offset;
+};
+
+
+int fs_alloc_extent(struct fs *fs, struct extent *extent,
+                    offset_t len, int type, cluster_t *first_cluster_out);
+struct extent *fs_find_extent(struct fs *fs, offset_t start, offset_t len, struct extent *last,
+                              offset_t *r_start_out, offset_t *e_start_out, offset_t *len_out);
+int fs_init(struct fs *fs, uint16_t cluster_size, offset_t data_size, offset_t *total_size_out);
+void fs_set_rootdir_start(struct fs *fs, cluster_t rootdir_start);
+void fs_update_free_clusters(struct fs *fs);
+
+#endif