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* Copyright (C) 2015 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
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* See the License for the specific language governing permissions and
* limitations under the License.
#pragma once
#include <stdbool.h>
#define FULL_ASSERT 1
#define FULL_ASSERT 0
#define full_assert assert
#define full_assert(x) \
do { \
} while (0)
#include "block_mac.h"
#include "block_set.h"
#include "block_tree.h"
* struct fs - File system state
* @dev: Main block device.
* @transactions: Transaction list.
* @allocated: List of block sets containing blocks
* allocated by active transactions.
* @free: Block set of free blocks.
* @files: B+ tree of all files.
* @super_dev: Block device used to store super blocks.
* @key: Key to use for encrypt, decrypt and mac.
* @super_block: Block numbers in @super_dev to store
* super-block in.
* @super_block_version: Last read or written super block version.
* @written_super_block_version: Last written super block version.
* @min_block_num: First block number that can store non
* super blocks.
* @block_num_size: Number of bytes used to store block numbers.
* @mac_size: Number of bytes used to store mac values.
* Must be 16 if @dev is not tamper_detecting.
* @reserved_count: Number of free blocks reserved for active
* transactions.
struct fs {
struct block_device* dev;
struct list_node transactions;
struct list_node allocated;
struct block_set free;
struct block_tree files;
struct block_device* super_dev;
const struct key* key;
data_block_t super_block[2];
unsigned int super_block_version;
unsigned int written_super_block_version;
data_block_t min_block_num;
size_t block_num_size;
size_t mac_size;
data_block_t reserved_count;
bool update_super_block(struct transaction* tr,
const struct block_mac* free,
const struct block_mac* files);
int fs_init(struct fs* fs,
const struct key* key,
struct block_device* dev,
struct block_device* super_dev,
bool clear);