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 _EXT4_UTILS_H_ 18 #define _EXT4_UTILS_H_ 19 20 #ifdef __cplusplus 21 extern "C" { 22 #endif 23 24 #ifndef _GNU_SOURCE 25 #define _GNU_SOURCE 26 #endif 27 #define _FILE_OFFSET_BITS 64 28 #define _LARGEFILE64_SOURCE 1 29 #include <sys/types.h> 30 #include <unistd.h> 31 32 #include <sys/types.h> 33 #include <errno.h> 34 #include <stdarg.h> 35 #include <stdio.h> 36 #include <stdlib.h> 37 #include <string.h> 38 #include <setjmp.h> 39 #include <stdint.h> 40 41 #if defined(__APPLE__) && defined(__MACH__) 42 #define lseek64 lseek 43 #define ftruncate64 ftruncate 44 #define mmap64 mmap 45 #define off64_t off_t 46 #endif 47 48 #include "ext4_sb.h" 49 50 extern int force; 51 52 #define EXT4_JNL_BACKUP_BLOCKS 1 53 54 #ifndef __cplusplus 55 #ifndef min /* already defined by windows.h */ 56 #define min(a, b) ((a) < (b) ? (a) : (b)) 57 #endif 58 #endif 59 60 #define DIV_ROUND_UP(x, y) (((x) + (y) - 1)/(y)) 61 #define EXT4_ALIGN(x, y) ((y) * DIV_ROUND_UP((x), (y))) 62 63 /* XXX */ 64 #define cpu_to_le32(x) (x) 65 #define cpu_to_le16(x) (x) 66 #define le32_to_cpu(x) (x) 67 #define le16_to_cpu(x) (x) 68 69 #ifdef __LP64__ 70 typedef unsigned long u64; 71 typedef signed long s64; 72 73 #define PRIext4u64 "lu" 74 #else 75 typedef unsigned long long u64; 76 typedef signed long long s64; 77 78 #define PRIext4u64 PRIu64 79 #endif 80 typedef unsigned int u32; 81 typedef unsigned short int u16; 82 typedef unsigned char u8; 83 84 struct block_group_info; 85 struct xattr_list_element; 86 87 struct ext2_group_desc { 88 u32 bg_block_bitmap; 89 u32 bg_inode_bitmap; 90 u32 bg_inode_table; 91 u16 bg_free_blocks_count; 92 u16 bg_free_inodes_count; 93 u16 bg_used_dirs_count; 94 u16 bg_flags; 95 u32 bg_reserved[2]; 96 u16 bg_reserved16; 97 u16 bg_checksum; 98 }; 99 100 struct fs_aux_info { 101 struct ext4_super_block *sb; 102 struct ext4_super_block *sb_block; 103 struct ext4_super_block *sb_zero; 104 struct ext4_super_block **backup_sb; 105 struct ext2_group_desc *bg_desc; 106 struct block_group_info *bgs; 107 struct xattr_list_element *xattrs; 108 u32 first_data_block; 109 u64 len_blocks; 110 u32 inode_table_blocks; 111 u32 groups; 112 u32 bg_desc_blocks; 113 u32 default_i_flags; 114 u64 blocks_per_ind; 115 u64 blocks_per_dind; 116 u64 blocks_per_tind; 117 }; 118 119 extern struct fs_info info; 120 extern struct fs_aux_info aux_info; 121 122 extern jmp_buf setjmp_env; 123 124 int bitmap_get_bit(u8 *bitmap, u32 bit); // vold 125 u64 get_block_device_size(int fd); // recovery 126 int is_block_device_fd(int fd); // wipe.c 127 u64 get_file_size(int fd); // fs_mgr 128 129 int read_ext(int fd, int verbose); // vold 130 131 #ifdef __cplusplus 132 } 133 #endif 134 135 #endif 136