1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef FATBLOCK_H
18#define FATBLOCK_H
19
20#include <stdint.h>
21#include <sys/types.h>
22
23#include "fdpool.h"
24
25typedef uint64_t offset_t;
26
27typedef enum {
28	EXTENT_TYPE_BOOT,
29	EXTENT_TYPE_INFO,
30	EXTENT_TYPE_FAT,
31	EXTENT_TYPE_FILE,
32	EXTENT_TYPE_DIR
33} extent_type;
34
35struct extent {
36	offset_t start;
37	offset_t len;
38	extent_type type;
39
40	struct extent *next;
41};
42
43struct file {
44	struct extent extent;
45
46	char *path;
47	uint32_t size;
48
49	dev_t dev;
50	ino_t ino;
51	time_t mtime;
52
53	struct pooled_fd pfd;
54};
55
56struct dir {
57	struct extent extent;
58
59	char *path;
60	uint32_t size;
61
62	struct fat_dirent *entries;
63};
64
65struct fs;
66
67int import_tree(struct fs *fs, char *path);
68int fs_read(struct fs *fs, char *buf, offset_t start, offset_t len);
69
70#define MALLOC_FAIL (-41)    /* memory allocation failed somewhere. */
71#define SKY_IS_FALLING (-42) /* One of the files changed out from under us. */
72
73#endif
74