1f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle/* 2f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle * Copyright (C) 2010 The Android Open Source Project 3f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle * 4f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle * Licensed under the Apache License, Version 2.0 (the "License"); 5f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle * you may not use this file except in compliance with the License. 6f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle * You may obtain a copy of the License at 7f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle * 8f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle * http://www.apache.org/licenses/LICENSE-2.0 9f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle * 10f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle * Unless required by applicable law or agreed to in writing, software 11f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle * distributed under the License is distributed on an "AS IS" BASIS, 12f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle * See the License for the specific language governing permissions and 14f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle * limitations under the License. 15f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle */ 16f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle 17f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle#ifndef FS_H 18f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle#define FS_H 19f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle 200cb61411eadd92b7202e045c1c9ec8df7fb636feThomas Tuttle#include "fatblock.h" 21f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle#include "fat.h" 22f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle 23f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttlestruct fs { 24f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle uint16_t cluster_size; 25f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle 26f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle cluster_t num_clusters; 27f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle cluster_t next_cluster; 28f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle struct extent *extents; 29f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle 30f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle struct fat_boot_sector boot; 31f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle struct extent boot_extent; 32f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle struct extent backup_boot_extent; 33f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle 34f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle struct fat_info_sector info; 35f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle struct extent info_extent; 36f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle 37f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle struct extent fat_extent; 38f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle fat_entry_t *fat; 39f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle offset_t fat_size; 40f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle 41f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle offset_t data_offset; 42f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle}; 43f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle 44f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttleint fs_alloc_extent(struct fs *fs, struct extent *extent, 45f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle offset_t len, int type, cluster_t *first_cluster_out); 46f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttlestruct extent *fs_find_extent(struct fs *fs, offset_t start, offset_t len, struct extent *last, 47f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle offset_t *r_start_out, offset_t *e_start_out, offset_t *len_out); 48f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttleint fs_init(struct fs *fs, uint16_t cluster_size, offset_t data_size, offset_t *total_size_out); 49f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttlevoid fs_set_rootdir_start(struct fs *fs, cluster_t rootdir_start); 50f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttlevoid fs_update_free_clusters(struct fs *fs); 51f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle 52f79b2dff1024db4f6326f3422236bed169dd902fThomas Tuttle#endif 53