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 warn(fmt, args...) do { fprintf(stderr, "warning: %s: " fmt "\n", __func__, ## args); } while (0) 53 #define error(fmt, args...) do { fprintf(stderr, "error: %s: " fmt "\n", __func__, ## args); if (!force) longjmp(setjmp_env, EXIT_FAILURE); } while (0) 54 #define error_errno(s, args...) error(s ": %s", ##args, strerror(errno)) 55 #define critical_error(fmt, args...) do { fprintf(stderr, "critical error: %s: " fmt "\n", __func__, ## args); longjmp(setjmp_env, EXIT_FAILURE); } while (0) 56 #define critical_error_errno(s, args...) critical_error(s ": %s", ##args, strerror(errno)) 57 58 #define EXT4_JNL_BACKUP_BLOCKS 1 59 60 #ifndef __cplusplus 61 #ifndef min /* already defined by windows.h */ 62 #define min(a, b) ((a) < (b) ? (a) : (b)) 63 #endif 64 #endif 65 66 #define DIV_ROUND_UP(x, y) (((x) + (y) - 1)/(y)) 67 #define EXT4_ALIGN(x, y) ((y) * DIV_ROUND_UP((x), (y))) 68 69 /* XXX */ 70 #define cpu_to_le32(x) (x) 71 #define cpu_to_le16(x) (x) 72 #define le32_to_cpu(x) (x) 73 #define le16_to_cpu(x) (x) 74 75 #ifdef __LP64__ 76 typedef unsigned long u64; 77 typedef signed long s64; 78 79 #define PRIext4u64 "lu" 80 #else 81 typedef unsigned long long u64; 82 typedef signed long long s64; 83 84 #define PRIext4u64 PRIu64 85 #endif 86 typedef unsigned int u32; 87 typedef unsigned short int u16; 88 typedef unsigned char u8; 89 90 struct block_group_info; 91 struct xattr_list_element; 92 93 struct ext2_group_desc { 94 u32 bg_block_bitmap; 95 u32 bg_inode_bitmap; 96 u32 bg_inode_table; 97 u16 bg_free_blocks_count; 98 u16 bg_free_inodes_count; 99 u16 bg_used_dirs_count; 100 u16 bg_flags; 101 u32 bg_reserved[2]; 102 u16 bg_reserved16; 103 u16 bg_checksum; 104 }; 105 106 struct fs_aux_info { 107 struct ext4_super_block *sb; 108 struct ext4_super_block *sb_block; 109 struct ext4_super_block *sb_zero; 110 struct ext4_super_block **backup_sb; 111 struct ext2_group_desc *bg_desc; 112 struct block_group_info *bgs; 113 struct xattr_list_element *xattrs; 114 u32 first_data_block; 115 u64 len_blocks; 116 u32 inode_table_blocks; 117 u32 groups; 118 u32 bg_desc_blocks; 119 u32 default_i_flags; 120 u64 blocks_per_ind; 121 u64 blocks_per_dind; 122 u64 blocks_per_tind; 123 }; 124 125 extern struct fs_info info; 126 extern struct fs_aux_info aux_info; 127 128 extern jmp_buf setjmp_env; 129 130 int bitmap_get_bit(u8 *bitmap, u32 bit); // vold 131 u64 get_block_device_size(int fd); // recovery 132 int is_block_device_fd(int fd); // wipe.c 133 u64 get_file_size(int fd); // fs_mgr 134 135 int read_ext(int fd, int verbose); // vold 136 137 #ifdef __cplusplus 138 } 139 #endif 140 141 #endif 142
