2015-04-04 16:26:16 -04:00
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/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _EXT4_UTILS_H_
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#define _EXT4_UTILS_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef _GNU_SOURCE
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#define _GNU_SOURCE
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#endif
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#define _FILE_OFFSET_BITS 64
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#define _LARGEFILE64_SOURCE 1
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#include <sys/types.h>
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2016-04-25 05:58:47 -04:00
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#include <sys/sysmacros.h>
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2015-04-04 16:26:16 -04:00
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#include <unistd.h>
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#include <errno.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <setjmp.h>
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#include <stdint.h>
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#if defined(__APPLE__) && defined(__MACH__)
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#define lseek64 lseek
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#define ftruncate64 ftruncate
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#define mmap64 mmap
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#define off64_t off_t
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#endif
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#include "ext4_sb.h"
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extern int force;
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#define warn(fmt, args...) do { fprintf(stderr, "warning: %s: " fmt "\n", __func__, ## args); } while (0)
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#define error(fmt, args...) do { fprintf(stderr, "error: %s: " fmt "\n", __func__, ## args); if (!force) longjmp(setjmp_env, EXIT_FAILURE); } while (0)
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#define error_errno(s, args...) error(s ": %s", ##args, strerror(errno))
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#define critical_error(fmt, args...) do { fprintf(stderr, "critical error: %s: " fmt "\n", __func__, ## args); longjmp(setjmp_env, EXIT_FAILURE); } while (0)
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#define critical_error_errno(s, args...) critical_error(s ": %s", ##args, strerror(errno))
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#define EXT4_JNL_BACKUP_BLOCKS 1
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#ifndef min /* already defined by windows.h */
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#define min(a, b) ((a) < (b) ? (a) : (b))
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#endif
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#define DIV_ROUND_UP(x, y) (((x) + (y) - 1)/(y))
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#define EXT4_ALIGN(x, y) ((y) * DIV_ROUND_UP((x), (y)))
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/* XXX */
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#define cpu_to_le32(x) (x)
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#define cpu_to_le16(x) (x)
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#define le32_to_cpu(x) (x)
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#define le16_to_cpu(x) (x)
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#ifdef __LP64__
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typedef unsigned long u64;
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typedef signed long s64;
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#else
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typedef unsigned long long u64;
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typedef signed long long s64;
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#endif
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typedef unsigned int u32;
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typedef unsigned short int u16;
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typedef unsigned char u8;
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struct block_group_info;
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struct xattr_list_element;
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struct ext2_group_desc {
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u32 bg_block_bitmap;
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u32 bg_inode_bitmap;
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u32 bg_inode_table;
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u16 bg_free_blocks_count;
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u16 bg_free_inodes_count;
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u16 bg_used_dirs_count;
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u16 bg_flags;
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u32 bg_reserved[2];
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u16 bg_reserved16;
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u16 bg_checksum;
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};
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struct fs_aux_info {
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struct ext4_super_block *sb;
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struct ext4_super_block **backup_sb;
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struct ext2_group_desc *bg_desc;
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struct block_group_info *bgs;
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struct xattr_list_element *xattrs;
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u32 first_data_block;
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u64 len_blocks;
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u32 inode_table_blocks;
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u32 groups;
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u32 bg_desc_blocks;
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u32 default_i_flags;
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u32 blocks_per_ind;
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u32 blocks_per_dind;
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u32 blocks_per_tind;
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};
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extern struct fs_info info;
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extern struct fs_aux_info aux_info;
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extern struct sparse_file *ext4_sparse_file;
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extern jmp_buf setjmp_env;
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static inline int log_2(int j)
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{
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int i;
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for (i = 0; j > 0; i++)
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j >>= 1;
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return i - 1;
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}
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int bitmap_get_bit(u8 *bitmap, u32 bit);
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void bitmap_clear_bit(u8 *bitmap, u32 bit);
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int ext4_bg_has_super_block(int bg);
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void read_sb(int fd, struct ext4_super_block *sb);
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void write_sb(int fd, unsigned long long offset, struct ext4_super_block *sb);
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void write_ext4_image(int fd, int gz, int sparse, int crc);
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void ext4_create_fs_aux_info(void);
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void ext4_free_fs_aux_info(void);
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void ext4_fill_in_sb(void);
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void ext4_create_resize_inode(void);
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void ext4_create_journal_inode(void);
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void ext4_update_free(void);
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void ext4_queue_sb(void);
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u64 get_block_device_size(int fd);
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int is_block_device_fd(int fd);
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u64 get_file_size(int fd);
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u64 parse_num(const char *arg);
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void ext4_parse_sb_info(struct ext4_super_block *sb);
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u16 ext4_crc16(u16 crc_in, const void *buf, int size);
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2015-04-04 17:37:00 -04:00
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typedef int (*fs_config_func_t)(const char *path, int dir, unsigned *uid, unsigned *gid,
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2015-04-04 16:26:16 -04:00
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unsigned *mode, uint64_t *capabilities);
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struct selabel_handle;
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int make_ext4fs_internal(int fd, const char *directory,
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2015-04-08 01:05:14 -04:00
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fs_config_func_t fs_config_func, int gzip,
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2015-04-04 16:26:16 -04:00
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int sparse, int crc, int wipe,
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2015-04-04 16:42:53 -04:00
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int verbose, time_t fixed_time,
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2015-04-04 16:26:16 -04:00
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FILE* block_list_file);
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int read_ext(int fd, int verbose);
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#ifdef __cplusplus
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}
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#endif
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#endif
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