make_ext4fs.c revision e4b5ae8ab07e698b95f004c9226000b02f853abc
1ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross/* 2ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross * Copyright (C) 2010 The Android Open Source Project 3ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross * 4ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross * Licensed under the Apache License, Version 2.0 (the "License"); 5ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross * you may not use this file except in compliance with the License. 6ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross * You may obtain a copy of the License at 7ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross * 8ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross * http://www.apache.org/licenses/LICENSE-2.0 9ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross * 10ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross * Unless required by applicable law or agreed to in writing, software 11ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross * distributed under the License is distributed on an "AS IS" BASIS, 12ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross * See the License for the specific language governing permissions and 14ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross * limitations under the License. 15ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross */ 16ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 17ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross#define _GNU_SOURCE 18ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 19ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross#include <dirent.h> 20ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross#include <libgen.h> 21881cca2f88ddcce86483b3ba95546b5641de8c0eColin Cross#include <stdio.h> 22881cca2f88ddcce86483b3ba95546b5641de8c0eColin Cross#include <stdlib.h> 23881cca2f88ddcce86483b3ba95546b5641de8c0eColin Cross#include <string.h> 24881cca2f88ddcce86483b3ba95546b5641de8c0eColin Cross#include <unistd.h> 25881cca2f88ddcce86483b3ba95546b5641de8c0eColin Cross#include <sys/stat.h> 26881cca2f88ddcce86483b3ba95546b5641de8c0eColin Cross#include <sys/types.h> 27ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 28ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross#include "make_ext4fs.h" 297a8bee7653c393d8da0e28668cb51d3ccab793e8Colin Cross#include "output_file.h" 30ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross#include "ext4_utils.h" 31ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross#include "allocate.h" 32ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross#include "contents.h" 33ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross#include "uuid.h" 34ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 35ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross#ifdef ANDROID 36ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross#include <private/android_filesystem_config.h> 37ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross#endif 38ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 39ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross/* TODO: Not implemented: 40ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross Allocating blocks in the same block group as the file inode 41ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross Hash or binary tree directories 427a8bee7653c393d8da0e28668cb51d3ccab793e8Colin Cross Special files: sockets, devices, fifos 43ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross */ 44ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 45ec0a2e83dc66d67addeb90e83144187691852a3eColin Crossstatic int filter_dot(const struct dirent *d) 46ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross{ 47ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross return (strcmp(d->d_name, "..") && strcmp(d->d_name, ".")); 48ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross} 49ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 50ec0a2e83dc66d67addeb90e83144187691852a3eColin Crossstatic u32 build_default_directory_structure() 51ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross{ 52ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross u32 inode; 53ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross u32 root_inode; 54ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross struct dentry dentries = { 55ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross .filename = "lost+found", 56ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross .file_type = EXT4_FT_DIR, 57ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross .mode = S_IRWXU, 58ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross .uid = 0, 59ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross .gid = 0 60ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross }; 61ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross root_inode = make_directory(0, 1, &dentries, 1); 62ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross inode = make_directory(root_inode, 0, NULL, 0); 63ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross *dentries.inode = inode; 64ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 65ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross return root_inode; 66ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross} 67ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 68ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross/* Read a local directory and create the same tree in the generated filesystem. 69ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross Calls itself recursively with each directory in the given directory */ 70ec0a2e83dc66d67addeb90e83144187691852a3eColin Crossstatic u32 build_directory_structure(const char *full_path, const char *dir_path, 71ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross u32 dir_inode, int android) 72ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross{ 73ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross int entries = 0; 74ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross struct dentry *dentries; 75ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross struct dirent **namelist; 76ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross struct stat stat; 77ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross int ret; 78ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross int i; 79ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross u32 inode; 80ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross u32 entry_inode; 81ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross u32 dirs = 0; 82ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 838aef66d2125af8de7672a12895276802fcc1948fColin Cross entries = scandir(full_path, &namelist, filter_dot, (void*)alphasort); 84ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (entries < 0) { 85ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross error_errno("scandir"); 86ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross return EXT4_ALLOCATE_FAILED; 87ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } 88ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 89ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentries = calloc(entries, sizeof(struct dentry)); 90ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (dentries == NULL) 91ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross critical_error_errno("malloc"); 92ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 93ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross for (i = 0; i < entries; i++) { 94ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentries[i].filename = strdup(namelist[i]->d_name); 95ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (dentries[i].filename == NULL) 96ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross critical_error_errno("strdup"); 97ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 98ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross asprintf(&dentries[i].path, "%s/%s", dir_path, namelist[i]->d_name); 99ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross asprintf(&dentries[i].full_path, "%s/%s", full_path, namelist[i]->d_name); 100ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 101ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross free(namelist[i]); 102ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 103ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross ret = lstat(dentries[i].full_path, &stat); 104ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (ret < 0) { 105ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross error_errno("lstat"); 106ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross i--; 107ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross entries--; 108ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross continue; 109ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } 110ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 111ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentries[i].size = stat.st_size; 112ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentries[i].mode = stat.st_mode & (S_ISUID|S_ISGID|S_ISVTX|S_IRWXU|S_IRWXG|S_IRWXO); 113ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (android) { 114ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross#ifdef ANDROID 115ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross unsigned int mode = 0; 116ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross unsigned int uid = 0; 117ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross unsigned int gid = 0; 118ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross int dir = S_ISDIR(stat.st_mode); 119ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross fs_config(dentries[i].path, dir, &uid, &gid, &mode); 120ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentries[i].mode = mode; 121ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentries[i].uid = uid; 122ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentries[i].gid = gid; 123ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross#else 124ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross error("can't set android permissions - built without android support"); 125ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross#endif 126ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } 127ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 128ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (S_ISREG(stat.st_mode)) { 129ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentries[i].file_type = EXT4_FT_REG_FILE; 130ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } else if (S_ISDIR(stat.st_mode)) { 131ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentries[i].file_type = EXT4_FT_DIR; 132ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dirs++; 133ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } else if (S_ISCHR(stat.st_mode)) { 134ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentries[i].file_type = EXT4_FT_CHRDEV; 135ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } else if (S_ISBLK(stat.st_mode)) { 136ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentries[i].file_type = EXT4_FT_BLKDEV; 137ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } else if (S_ISFIFO(stat.st_mode)) { 138ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentries[i].file_type = EXT4_FT_FIFO; 139ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } else if (S_ISSOCK(stat.st_mode)) { 140ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentries[i].file_type = EXT4_FT_SOCK; 141ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } else if (S_ISLNK(stat.st_mode)) { 142ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentries[i].file_type = EXT4_FT_SYMLINK; 143ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentries[i].link = calloc(info.block_size, 1); 144ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross readlink(dentries[i].full_path, dentries[i].link, info.block_size - 1); 145ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } else { 146ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross error("unknown file type on %s", dentries[i].path); 147ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross i--; 148ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross entries--; 149ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } 150ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } 151ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross free(namelist); 152ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 153ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross inode = make_directory(dir_inode, entries, dentries, dirs); 154ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 155ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross for (i = 0; i < entries; i++) { 156ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (dentries[i].file_type == EXT4_FT_REG_FILE) { 157ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross entry_inode = make_file(dentries[i].full_path, dentries[i].size); 158ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } else if (dentries[i].file_type == EXT4_FT_DIR) { 159ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross entry_inode = build_directory_structure(dentries[i].full_path, 160ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentries[i].path, inode, android); 161ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } else if (dentries[i].file_type == EXT4_FT_SYMLINK) { 162ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross entry_inode = make_link(dentries[i].full_path, dentries[i].link); 163ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } else { 164ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross error("unknown file type on %s", dentries[i].path); 165ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross entry_inode = 0; 166ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } 167ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross *dentries[i].inode = entry_inode; 168ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 169ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross ret = inode_set_permissions(entry_inode, dentries[i].mode, 170ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentries[i].uid, dentries[i].gid); 171ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (ret) 172ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross error("failed to set permissions on %s\n", dentries[i].path); 173ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 174ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross free(dentries[i].path); 175ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross free(dentries[i].full_path); 176ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross free(dentries[i].link); 177ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross free((void *)dentries[i].filename); 178ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } 179ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 180ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross free(dentries); 181ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross return inode; 182ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross} 183ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 184ec0a2e83dc66d67addeb90e83144187691852a3eColin Crossstatic u32 compute_block_size() 185ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross{ 186ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross return 4096; 187ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross} 188ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 189e4b5ae8ab07e698b95f004c9226000b02f853abcColin Crossstatic u32 compute_journal_blocks() 190e4b5ae8ab07e698b95f004c9226000b02f853abcColin Cross{ 191e4b5ae8ab07e698b95f004c9226000b02f853abcColin Cross u32 journal_blocks = DIV_ROUND_UP(info.len, info.block_size) / 64; 192e4b5ae8ab07e698b95f004c9226000b02f853abcColin Cross if (journal_blocks < 1024) 193e4b5ae8ab07e698b95f004c9226000b02f853abcColin Cross journal_blocks = 1024; 194e4b5ae8ab07e698b95f004c9226000b02f853abcColin Cross if (journal_blocks > 32768) 195e4b5ae8ab07e698b95f004c9226000b02f853abcColin Cross journal_blocks = 32768; 196e4b5ae8ab07e698b95f004c9226000b02f853abcColin Cross return journal_blocks; 197e4b5ae8ab07e698b95f004c9226000b02f853abcColin Cross} 198e4b5ae8ab07e698b95f004c9226000b02f853abcColin Cross 199ec0a2e83dc66d67addeb90e83144187691852a3eColin Crossstatic u32 compute_blocks_per_group() 200ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross{ 201ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross return info.block_size * 8; 202ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross} 203ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 204ec0a2e83dc66d67addeb90e83144187691852a3eColin Crossstatic u32 compute_inodes() 205ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross{ 206ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross return DIV_ROUND_UP(info.len, info.block_size) / 4; 207ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross} 208ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 209ec0a2e83dc66d67addeb90e83144187691852a3eColin Crossstatic u32 compute_inodes_per_group() 210ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross{ 211ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross u32 blocks = DIV_ROUND_UP(info.len, info.block_size); 212ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross u32 block_groups = DIV_ROUND_UP(blocks, info.blocks_per_group); 213ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross return DIV_ROUND_UP(info.inodes, block_groups); 214ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross} 215ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 216263eefd9fb9608432636c903423e43848e69f39dDoug Zongkervoid reset_ext4fs_info() { 217263eefd9fb9608432636c903423e43848e69f39dDoug Zongker // Reset all the global data structures used by make_ext4fs so it 218263eefd9fb9608432636c903423e43848e69f39dDoug Zongker // can be called again. 219263eefd9fb9608432636c903423e43848e69f39dDoug Zongker memset(&info, 0, sizeof(info)); 220263eefd9fb9608432636c903423e43848e69f39dDoug Zongker memset(&aux_info, 0, sizeof(aux_info)); 221263eefd9fb9608432636c903423e43848e69f39dDoug Zongker free_data_blocks(); 222ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross} 223ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 224263eefd9fb9608432636c903423e43848e69f39dDoug Zongkerint make_ext4fs(const char *filename, const char *directory, 225263eefd9fb9608432636c903423e43848e69f39dDoug Zongker char *mountpoint, int android, int gzip) 226ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross{ 227263eefd9fb9608432636c903423e43848e69f39dDoug Zongker u32 root_inode_num; 228263eefd9fb9608432636c903423e43848e69f39dDoug Zongker u16 root_mode; 229ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 230ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (info.len == 0) 231ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross info.len = get_file_size(filename); 232ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 233ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (info.len <= 0) { 234ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross fprintf(stderr, "Need size of filesystem\n"); 235263eefd9fb9608432636c903423e43848e69f39dDoug Zongker return EXIT_FAILURE; 236ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } 237ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 238ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (info.block_size <= 0) 239ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross info.block_size = compute_block_size(); 240ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 241e4b5ae8ab07e698b95f004c9226000b02f853abcColin Cross if (info.journal_blocks == 0) 242e4b5ae8ab07e698b95f004c9226000b02f853abcColin Cross info.journal_blocks = compute_journal_blocks(); 243e4b5ae8ab07e698b95f004c9226000b02f853abcColin Cross 244e4b5ae8ab07e698b95f004c9226000b02f853abcColin Cross if (info.no_journal == 0) 245e4b5ae8ab07e698b95f004c9226000b02f853abcColin Cross info.feat_compat = EXT4_FEATURE_COMPAT_HAS_JOURNAL; 246e4b5ae8ab07e698b95f004c9226000b02f853abcColin Cross else 247e4b5ae8ab07e698b95f004c9226000b02f853abcColin Cross info.journal_blocks = 0; 248e4b5ae8ab07e698b95f004c9226000b02f853abcColin Cross 249ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (info.blocks_per_group <= 0) 250ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross info.blocks_per_group = compute_blocks_per_group(); 251ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 252ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (info.inodes <= 0) 253ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross info.inodes = compute_inodes(); 254ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 255ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (info.inode_size <= 0) 256ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross info.inode_size = 256; 257ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 258ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (info.label == NULL) 259ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross info.label = ""; 260ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 261ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross info.inodes_per_group = compute_inodes_per_group(); 262ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 263ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross info.feat_compat |= 264ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross EXT4_FEATURE_COMPAT_RESIZE_INODE; 265ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 266ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross info.feat_ro_compat |= 267ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER | 268ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross EXT4_FEATURE_RO_COMPAT_LARGE_FILE; 269ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 270ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross info.feat_incompat |= 271ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross EXT4_FEATURE_INCOMPAT_EXTENTS | 272ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross EXT4_FEATURE_INCOMPAT_FILETYPE; 273ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 274ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 275ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross printf("Creating filesystem with parameters:\n"); 276ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross printf(" Size: %llu\n", info.len); 277ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross printf(" Block size: %d\n", info.block_size); 278ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross printf(" Blocks per group: %d\n", info.blocks_per_group); 279ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross printf(" Inodes per group: %d\n", info.inodes_per_group); 280ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross printf(" Inode size: %d\n", info.inode_size); 281e4b5ae8ab07e698b95f004c9226000b02f853abcColin Cross printf(" Journal blocks: %d\n", info.journal_blocks); 282ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross printf(" Label: %s\n", info.label); 283ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 284ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross ext4_create_fs_aux_info(); 285ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 286ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross printf(" Blocks: %llu\n", aux_info.len_blocks); 287ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross printf(" Block groups: %d\n", aux_info.groups); 288ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross printf(" Reserved block group size: %d\n", aux_info.bg_desc_reserve_blocks); 289ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 290ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross block_allocator_init(); 291ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 292ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross ext4_fill_in_sb(); 293ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 294ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (reserve_inodes(0, 10) == EXT4_ALLOCATE_FAILED) 295ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross error("failed to reserve first 10 inodes"); 296ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 297ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (info.feat_compat & EXT4_FEATURE_COMPAT_HAS_JOURNAL) 298ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross ext4_create_journal_inode(); 299ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 300ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (info.feat_compat & EXT4_FEATURE_COMPAT_RESIZE_INODE) 301ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross ext4_create_resize_inode(); 302ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 303ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (directory) 304ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross root_inode_num = build_directory_structure(directory, mountpoint, 0, android); 305ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross else 306ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross root_inode_num = build_default_directory_structure(); 307263eefd9fb9608432636c903423e43848e69f39dDoug Zongker 308ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross root_mode = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH; 309ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross inode_set_permissions(root_inode_num, root_mode, 0, 0); 310ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 311ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross ext4_update_free(); 312ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 313ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross printf("Created filesystem with %d/%d inodes and %d/%d blocks\n", 314ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross aux_info.sb->s_inodes_count - aux_info.sb->s_free_inodes_count, 315ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross aux_info.sb->s_inodes_count, 316ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross aux_info.sb->s_blocks_count_lo - aux_info.sb->s_free_blocks_count_lo, 317ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross aux_info.sb->s_blocks_count_lo); 318ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 3197a8bee7653c393d8da0e28668cb51d3ccab793e8Colin Cross write_ext4_image(filename, gzip); 320ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 321ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross return 0; 322ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross} 323