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 #include <fcntl.h> 18 #include <libgen.h> 19 #include <stdio.h> 20 #include <unistd.h> 21 22 #if defined(__linux__) 23 #include <linux/fs.h> 24 #elif defined(__APPLE__) && defined(__MACH__) 25 #include <sys/disk.h> 26 #endif 27 28 #include "ext4_utils.h" 29 #include "canned_fs_config.h" 30 31 extern struct fs_info info; 32 33 34 static void usage(char *path) 35 { 36 fprintf(stderr, "%s [ -l <len> ] [ -j <journal size> ] [ -b <block_size> ]\n", basename(path)); 37 fprintf(stderr, " [ -g <blocks per group> ] [ -i <inodes> ] [ -I <inode size> ]\n"); 38 fprintf(stderr, " [ -m <reserved blocks percent> ] [ -L <label> ] [ -f ]\n"); 39 fprintf(stderr, " [ -S file_contexts ] [ -C fs_config ] [ -T timestamp ]\n"); 40 fprintf(stderr, " [ -z | -s ] [ -w ] [ -c ] [ -J ] [ -v ] [ -B <block_list_file> ]\n"); 41 fprintf(stderr, " <filename> [<directory>]\n"); 42 } 43 44 int main(int argc, char **argv) 45 { 46 int opt; 47 const char *filename = NULL; 48 const char *directory = NULL; 49 fs_config_func_t fs_config_func = NULL; 50 const char *fs_config_file = NULL; 51 int gzip = 0; 52 int sparse = 0; 53 int crc = 0; 54 int wipe = 0; 55 int fd; 56 int exitcode; 57 int verbose = 0; 58 time_t fixed_time = -1; 59 FILE* block_list_file = NULL; 60 61 while ((opt = getopt(argc, argv, "l:j:b:g:i:I:L:T:C:B:m:fwzJsctv")) != -1) { 62 switch (opt) { 63 case 'l': 64 info.len = parse_num(optarg); 65 break; 66 case 'j': 67 info.journal_blocks = parse_num(optarg); 68 break; 69 case 'b': 70 info.block_size = parse_num(optarg); 71 break; 72 case 'g': 73 info.blocks_per_group = parse_num(optarg); 74 break; 75 case 'i': 76 info.inodes = parse_num(optarg); 77 break; 78 case 'I': 79 info.inode_size = parse_num(optarg); 80 break; 81 case 'L': 82 info.label = optarg; 83 break; 84 case 'f': 85 force = 1; 86 break; 87 case 'w': 88 wipe = 1; 89 break; 90 case 'z': 91 gzip = 1; 92 break; 93 case 'J': 94 info.no_journal = 1; 95 break; 96 case 'c': 97 crc = 1; 98 break; 99 case 's': 100 sparse = 1; 101 break; 102 case 't': 103 fprintf(stderr, "Warning: -t (initialize inode tables) is deprecated\n"); 104 break; 105 case 'v': 106 verbose = 1; 107 break; 108 case 'T': 109 fixed_time = strtoll(optarg, NULL, 0); 110 break; 111 case 'C': 112 fs_config_file = optarg; 113 break; 114 case 'B': 115 block_list_file = fopen(optarg, "w"); 116 if (block_list_file == NULL) { 117 fprintf(stderr, "failed to open block_list_file: %s\n", strerror(errno)); 118 exit(EXIT_FAILURE); 119 } 120 break; 121 case 'm': 122 info.reserve_pcnt = strtoul(optarg, NULL, 0); 123 break; 124 default: /* '?' */ 125 usage(argv[0]); 126 exit(EXIT_FAILURE); 127 } 128 } 129 130 if (fs_config_file) { 131 if (load_canned_fs_config(fs_config_file) < 0) { 132 fprintf(stderr, "failed to load %s\n", fs_config_file); 133 exit(EXIT_FAILURE); 134 } 135 fs_config_func = canned_fs_config; 136 } 137 138 if (wipe && sparse) { 139 fprintf(stderr, "Cannot specifiy both wipe and sparse\n"); 140 usage(argv[0]); 141 exit(EXIT_FAILURE); 142 } 143 144 if (wipe && gzip) { 145 fprintf(stderr, "Cannot specifiy both wipe and gzip\n"); 146 usage(argv[0]); 147 exit(EXIT_FAILURE); 148 } 149 150 if (optind >= argc) { 151 fprintf(stderr, "Expected filename after options\n"); 152 usage(argv[0]); 153 exit(EXIT_FAILURE); 154 } 155 156 filename = argv[optind++]; 157 158 if (optind < argc) 159 directory = argv[optind++]; 160 161 if (optind < argc) { 162 fprintf(stderr, "Unexpected argument: %s\n", argv[optind]); 163 usage(argv[0]); 164 exit(EXIT_FAILURE); 165 } 166 167 if (strcmp(filename, "-")) { 168 fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0644); 169 if (fd < 0) { 170 perror("open"); 171 return EXIT_FAILURE; 172 } 173 } else { 174 fd = STDOUT_FILENO; 175 } 176 177 exitcode = make_ext4fs_internal(fd, directory, fs_config_func, gzip, 178 sparse, crc, wipe, verbose, fixed_time, block_list_file); 179 close(fd); 180 if (block_list_file) 181 fclose(block_list_file); 182 if (exitcode && strcmp(filename, "-")) 183 unlink(filename); 184 return exitcode; 185 } 186
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