Glenn L McGrath | 8f5b63e | 2001-06-22 09:22:06 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
| 2 | /* |
| 3 | * Mini cpio implementation for busybox |
| 4 | * |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 5 | * Copyright (C) 2001 by Glenn McGrath |
Glenn L McGrath | 8f5b63e | 2001-06-22 09:22:06 +0000 | [diff] [blame] | 6 | * |
"Robert P. J. Day" | 801ab14 | 2006-07-12 07:56:04 +0000 | [diff] [blame] | 7 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
Glenn L McGrath | 8f5b63e | 2001-06-22 09:22:06 +0000 | [diff] [blame] | 8 | * |
| 9 | * Limitations: |
Denis Vlasenko | 261f237 | 2008-04-05 00:07:46 +0000 | [diff] [blame] | 10 | * Doesn't check CRC's |
| 11 | * Only supports new ASCII and CRC formats |
Glenn L McGrath | 8f5b63e | 2001-06-22 09:22:06 +0000 | [diff] [blame] | 12 | * |
| 13 | */ |
Denis Vlasenko | b6adbf1 | 2007-05-26 19:00:18 +0000 | [diff] [blame] | 14 | #include "libbb.h" |
Denis Vlasenko | 9a7d38f | 2007-05-31 22:42:12 +0000 | [diff] [blame] | 15 | #include "unarchive.h" |
Glenn L McGrath | 8f5b63e | 2001-06-22 09:22:06 +0000 | [diff] [blame] | 16 | |
Denis Vlasenko | 05af832 | 2009-03-20 23:01:48 +0000 | [diff] [blame] | 17 | /* GNU cpio 2.9 --help (abridged): |
| 18 | |
| 19 | Modes: |
| 20 | -t, --list List the archive |
| 21 | -i, --extract Extract files from an archive |
| 22 | -o, --create Create the archive |
| 23 | -p, --pass-through Copy-pass mode [was ist das?!] |
| 24 | |
| 25 | Options valid in any mode: |
| 26 | --block-size=SIZE I/O block size = SIZE * 512 bytes |
| 27 | -B I/O block size = 5120 bytes |
| 28 | -c Use the old portable (ASCII) archive format |
| 29 | -C, --io-size=NUMBER I/O block size in bytes |
| 30 | -f, --nonmatching Only copy files that do not match given pattern |
| 31 | -F, --file=FILE Use FILE instead of standard input or output |
| 32 | -H, --format=FORMAT Use given archive FORMAT |
| 33 | -M, --message=STRING Print STRING when the end of a volume of the |
| 34 | backup media is reached |
| 35 | -n, --numeric-uid-gid If -v, show numeric UID and GID |
| 36 | --quiet Do not print the number of blocks copied |
| 37 | --rsh-command=COMMAND Use remote COMMAND instead of rsh |
| 38 | -v, --verbose Verbosely list the files processed |
| 39 | -V, --dot Print a "." for each file processed |
| 40 | -W, --warning=FLAG Control warning display: 'none','truncate','all'; |
| 41 | multiple options accumulate |
| 42 | |
| 43 | Options valid only in --extract mode: |
| 44 | -b, --swap Swap both halfwords of words and bytes of |
| 45 | halfwords in the data (equivalent to -sS) |
| 46 | -r, --rename Interactively rename files |
| 47 | -s, --swap-bytes Swap the bytes of each halfword in the files |
| 48 | -S, --swap-halfwords Swap the halfwords of each word (4 bytes) |
| 49 | --to-stdout Extract files to standard output |
| 50 | -E, --pattern-file=FILE Read additional patterns specifying filenames to |
| 51 | extract or list from FILE |
| 52 | --only-verify-crc Verify CRC's, don't actually extract the files |
| 53 | |
| 54 | Options valid only in --create mode: |
| 55 | -A, --append Append to an existing archive |
| 56 | -O FILE File to use instead of standard output |
| 57 | |
| 58 | Options valid only in --pass-through mode: |
| 59 | -l, --link Link files instead of copying them, when possible |
| 60 | |
| 61 | Options valid in --extract and --create modes: |
| 62 | --absolute-filenames Do not strip file system prefix components from |
| 63 | the file names |
| 64 | --no-absolute-filenames Create all files relative to the current dir |
| 65 | |
| 66 | Options valid in --create and --pass-through modes: |
| 67 | -0, --null A list of filenames is terminated by a NUL |
| 68 | -a, --reset-access-time Reset the access times of files after reading them |
| 69 | -I FILE File to use instead of standard input |
| 70 | -L, --dereference Dereference symbolic links (copy the files |
| 71 | that they point to instead of copying the links) |
| 72 | -R, --owner=[USER][:.][GROUP] Set owner of created files |
| 73 | |
| 74 | Options valid in --extract and --pass-through modes: |
| 75 | -d, --make-directories Create leading directories where needed |
| 76 | -m, --preserve-modification-time Retain mtime when creating files |
| 77 | --no-preserve-owner Do not change the ownership of the files |
| 78 | --sparse Write files with blocks of zeros as sparse files |
| 79 | -u, --unconditional Replace all files unconditionally |
| 80 | */ |
| 81 | enum { |
| 82 | CPIO_OPT_EXTRACT = (1 << 0), |
| 83 | CPIO_OPT_TEST = (1 << 1), |
| 84 | CPIO_OPT_NUL_TERMINATED = (1 << 2), |
| 85 | CPIO_OPT_UNCONDITIONAL = (1 << 3), |
| 86 | CPIO_OPT_VERBOSE = (1 << 4), |
| 87 | CPIO_OPT_CREATE_LEADING_DIR = (1 << 5), |
| 88 | CPIO_OPT_PRESERVE_MTIME = (1 << 6), |
| 89 | CPIO_OPT_DEREF = (1 << 7), |
| 90 | CPIO_OPT_FILE = (1 << 8), |
Denys Vlasenko | d30b89c | 2009-06-26 01:55:45 +0200 | [diff] [blame] | 91 | OPTBIT_FILE = 8, |
| 92 | IF_FEATURE_CPIO_O(OPTBIT_CREATE ,) |
| 93 | IF_FEATURE_CPIO_O(OPTBIT_FORMAT ,) |
| 94 | IF_FEATURE_CPIO_P(OPTBIT_PASSTHROUGH,) |
| 95 | IF_LONG_OPTS( OPTBIT_QUIET ,) |
| 96 | IF_LONG_OPTS( OPTBIT_2STDOUT ,) |
| 97 | CPIO_OPT_CREATE = IF_FEATURE_CPIO_O((1 << OPTBIT_CREATE )) + 0, |
| 98 | CPIO_OPT_FORMAT = IF_FEATURE_CPIO_O((1 << OPTBIT_FORMAT )) + 0, |
| 99 | CPIO_OPT_PASSTHROUGH = IF_FEATURE_CPIO_P((1 << OPTBIT_PASSTHROUGH)) + 0, |
| 100 | CPIO_OPT_QUIET = IF_LONG_OPTS( (1 << OPTBIT_QUIET )) + 0, |
| 101 | CPIO_OPT_2STDOUT = IF_LONG_OPTS( (1 << OPTBIT_2STDOUT )) + 0, |
Denis Vlasenko | 05af832 | 2009-03-20 23:01:48 +0000 | [diff] [blame] | 102 | }; |
| 103 | |
| 104 | #define OPTION_STR "it0uvdmLF:" |
| 105 | |
Denis Vlasenko | 261f237 | 2008-04-05 00:07:46 +0000 | [diff] [blame] | 106 | #if ENABLE_FEATURE_CPIO_O |
| 107 | static off_t cpio_pad4(off_t size) |
| 108 | { |
| 109 | int i; |
| 110 | |
| 111 | i = (- size) & 3; |
| 112 | size += i; |
| 113 | while (--i >= 0) |
| 114 | bb_putchar('\0'); |
| 115 | return size; |
| 116 | } |
| 117 | |
| 118 | /* Return value will become exit code. |
| 119 | * It's ok to exit instead of return. */ |
| 120 | static int cpio_o(void) |
| 121 | { |
Denis Vlasenko | c503dde | 2008-10-26 19:55:20 +0000 | [diff] [blame] | 122 | static const char trailer[] ALIGN1 = "TRAILER!!!"; |
Denis Vlasenko | 261f237 | 2008-04-05 00:07:46 +0000 | [diff] [blame] | 123 | struct name_s { |
| 124 | struct name_s *next; |
| 125 | char name[1]; |
| 126 | }; |
| 127 | struct inodes_s { |
| 128 | struct inodes_s *next; |
| 129 | struct name_s *names; |
| 130 | struct stat st; |
| 131 | }; |
| 132 | |
| 133 | struct inodes_s *links = NULL; |
| 134 | off_t bytes = 0; /* output bytes count */ |
| 135 | |
| 136 | while (1) { |
| 137 | const char *name; |
| 138 | char *line; |
| 139 | struct stat st; |
| 140 | |
Denis Vlasenko | 05af832 | 2009-03-20 23:01:48 +0000 | [diff] [blame] | 141 | line = (option_mask32 & CPIO_OPT_NUL_TERMINATED) |
| 142 | ? bb_get_chunk_from_file(stdin, NULL) |
| 143 | : xmalloc_fgetline(stdin); |
Denis Vlasenko | 261f237 | 2008-04-05 00:07:46 +0000 | [diff] [blame] | 144 | |
| 145 | if (line) { |
| 146 | /* Strip leading "./[./]..." from the filename */ |
| 147 | name = line; |
| 148 | while (name[0] == '.' && name[1] == '/') { |
| 149 | while (*++name == '/') |
| 150 | continue; |
| 151 | } |
| 152 | if (!*name) { /* line is empty */ |
| 153 | free(line); |
| 154 | continue; |
| 155 | } |
Denis Vlasenko | 05af832 | 2009-03-20 23:01:48 +0000 | [diff] [blame] | 156 | if ((option_mask32 & CPIO_OPT_DEREF) |
| 157 | ? stat(name, &st) |
| 158 | : lstat(name, &st) |
| 159 | ) { |
Denis Vlasenko | 261f237 | 2008-04-05 00:07:46 +0000 | [diff] [blame] | 160 | abort_cpio_o: |
| 161 | bb_simple_perror_msg_and_die(name); |
| 162 | } |
| 163 | |
| 164 | if (!(S_ISLNK(st.st_mode) || S_ISREG(st.st_mode))) |
| 165 | st.st_size = 0; /* paranoia */ |
| 166 | |
| 167 | /* Store hardlinks for later processing, dont output them */ |
| 168 | if (!S_ISDIR(st.st_mode) && st.st_nlink > 1) { |
| 169 | struct name_s *n; |
| 170 | struct inodes_s *l; |
| 171 | |
| 172 | /* Do we have this hardlink remembered? */ |
| 173 | l = links; |
| 174 | while (1) { |
| 175 | if (l == NULL) { |
| 176 | /* Not found: add new item to "links" list */ |
| 177 | l = xzalloc(sizeof(*l)); |
| 178 | l->st = st; |
| 179 | l->next = links; |
| 180 | links = l; |
| 181 | break; |
| 182 | } |
| 183 | if (l->st.st_ino == st.st_ino) { |
| 184 | /* found */ |
| 185 | break; |
| 186 | } |
| 187 | l = l->next; |
| 188 | } |
| 189 | /* Add new name to "l->names" list */ |
| 190 | n = xmalloc(sizeof(*n) + strlen(name)); |
| 191 | strcpy(n->name, name); |
| 192 | n->next = l->names; |
| 193 | l->names = n; |
| 194 | |
| 195 | free(line); |
| 196 | continue; |
| 197 | } |
| 198 | |
| 199 | } else { /* line == NULL: EOF */ |
| 200 | next_link: |
| 201 | if (links) { |
| 202 | /* Output hardlink's data */ |
| 203 | st = links->st; |
| 204 | name = links->names->name; |
| 205 | links->names = links->names->next; |
| 206 | /* GNU cpio is reported to emit file data |
| 207 | * only for the last instance. Mimic that. */ |
| 208 | if (links->names == NULL) |
| 209 | links = links->next; |
| 210 | else |
| 211 | st.st_size = 0; |
| 212 | /* NB: we leak links->names and/or links, |
| 213 | * this is intended (we exit soon anyway) */ |
| 214 | } else { |
| 215 | /* If no (more) hardlinks to output, |
| 216 | * output "trailer" entry */ |
Denis Vlasenko | c503dde | 2008-10-26 19:55:20 +0000 | [diff] [blame] | 217 | name = trailer; |
Denis Vlasenko | 261f237 | 2008-04-05 00:07:46 +0000 | [diff] [blame] | 218 | /* st.st_size == 0 is a must, but for uniformity |
| 219 | * in the output, we zero out everything */ |
| 220 | memset(&st, 0, sizeof(st)); |
| 221 | /* st.st_nlink = 1; - GNU cpio does this */ |
| 222 | } |
| 223 | } |
| 224 | |
| 225 | bytes += printf("070701" |
| 226 | "%08X%08X%08X%08X%08X%08X%08X" |
| 227 | "%08X%08X%08X%08X" /* GNU cpio uses uppercase hex */ |
| 228 | /* strlen+1: */ "%08X" |
| 229 | /* chksum: */ "00000000" /* (only for "070702" files) */ |
| 230 | /* name,NUL: */ "%s%c", |
| 231 | (unsigned)(uint32_t) st.st_ino, |
| 232 | (unsigned)(uint32_t) st.st_mode, |
| 233 | (unsigned)(uint32_t) st.st_uid, |
| 234 | (unsigned)(uint32_t) st.st_gid, |
| 235 | (unsigned)(uint32_t) st.st_nlink, |
| 236 | (unsigned)(uint32_t) st.st_mtime, |
| 237 | (unsigned)(uint32_t) st.st_size, |
| 238 | (unsigned)(uint32_t) major(st.st_dev), |
| 239 | (unsigned)(uint32_t) minor(st.st_dev), |
| 240 | (unsigned)(uint32_t) major(st.st_rdev), |
| 241 | (unsigned)(uint32_t) minor(st.st_rdev), |
| 242 | (unsigned)(strlen(name) + 1), |
| 243 | name, '\0'); |
| 244 | bytes = cpio_pad4(bytes); |
| 245 | |
| 246 | if (st.st_size) { |
| 247 | if (S_ISLNK(st.st_mode)) { |
| 248 | char *lpath = xmalloc_readlink_or_warn(name); |
| 249 | if (!lpath) |
| 250 | goto abort_cpio_o; |
| 251 | bytes += printf("%s", lpath); |
| 252 | free(lpath); |
| 253 | } else { /* S_ISREG */ |
| 254 | int fd = xopen(name, O_RDONLY); |
| 255 | fflush(stdout); |
| 256 | /* We must abort if file got shorter too! */ |
Denis Vlasenko | 1af00ed | 2008-04-05 02:44:30 +0000 | [diff] [blame] | 257 | bb_copyfd_exact_size(fd, STDOUT_FILENO, st.st_size); |
Denis Vlasenko | 261f237 | 2008-04-05 00:07:46 +0000 | [diff] [blame] | 258 | bytes += st.st_size; |
| 259 | close(fd); |
| 260 | } |
| 261 | bytes = cpio_pad4(bytes); |
| 262 | } |
| 263 | |
| 264 | if (!line) { |
Denis Vlasenko | c503dde | 2008-10-26 19:55:20 +0000 | [diff] [blame] | 265 | if (name != trailer) |
Denis Vlasenko | 261f237 | 2008-04-05 00:07:46 +0000 | [diff] [blame] | 266 | goto next_link; |
| 267 | /* TODO: GNU cpio pads trailer to 512 bytes, do we want that? */ |
| 268 | return EXIT_SUCCESS; |
| 269 | } |
| 270 | |
| 271 | free(line); |
| 272 | } /* end of "while (1)" */ |
| 273 | } |
| 274 | #endif |
Glenn L McGrath | 10b7813 | 2004-02-25 09:30:06 +0000 | [diff] [blame] | 275 | |
Denis Vlasenko | 9b49a5e | 2007-10-11 10:05:36 +0000 | [diff] [blame] | 276 | int cpio_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
Denis Vlasenko | a60f84e | 2008-07-05 09:18:54 +0000 | [diff] [blame] | 277 | int cpio_main(int argc UNUSED_PARAM, char **argv) |
Glenn L McGrath | 8f5b63e | 2001-06-22 09:22:06 +0000 | [diff] [blame] | 278 | { |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 279 | archive_handle_t *archive_handle; |
Denis Vlasenko | 261f237 | 2008-04-05 00:07:46 +0000 | [diff] [blame] | 280 | char *cpio_filename; |
Denis Vlasenko | 5e34ff2 | 2009-04-21 11:09:40 +0000 | [diff] [blame] | 281 | IF_FEATURE_CPIO_O(const char *cpio_fmt = "";) |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 282 | unsigned opt; |
Denis Vlasenko | 2b407b1 | 2008-07-11 21:42:12 +0000 | [diff] [blame] | 283 | |
Denys Vlasenko | f3b92d3 | 2009-06-19 12:10:38 +0200 | [diff] [blame] | 284 | #if ENABLE_LONG_OPTS |
Denis Vlasenko | 2b407b1 | 2008-07-11 21:42:12 +0000 | [diff] [blame] | 285 | applet_long_options = |
| 286 | "extract\0" No_argument "i" |
| 287 | "list\0" No_argument "t" |
| 288 | #if ENABLE_FEATURE_CPIO_O |
| 289 | "create\0" No_argument "o" |
| 290 | "format\0" Required_argument "H" |
Denis Vlasenko | 83518d1 | 2009-03-20 22:17:13 +0000 | [diff] [blame] | 291 | #if ENABLE_FEATURE_CPIO_P |
| 292 | "pass-through\0" No_argument "p" |
| 293 | #endif |
Denis Vlasenko | 2b407b1 | 2008-07-11 21:42:12 +0000 | [diff] [blame] | 294 | #endif |
Denys Vlasenko | d30b89c | 2009-06-26 01:55:45 +0200 | [diff] [blame] | 295 | "verbose\0" No_argument "v" |
| 296 | "quiet\0" No_argument "\xff" |
| 297 | "to-stdout\0" No_argument "\xfe" |
Denis Vlasenko | 2b407b1 | 2008-07-11 21:42:12 +0000 | [diff] [blame] | 298 | ; |
| 299 | #endif |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 300 | |
Denis Vlasenko | 83518d1 | 2009-03-20 22:17:13 +0000 | [diff] [blame] | 301 | /* As of now we do not enforce this: */ |
| 302 | /* -i,-t,-o,-p are mutually exclusive */ |
| 303 | /* -u,-d,-m make sense only with -i or -p */ |
Denis Vlasenko | 05af832 | 2009-03-20 23:01:48 +0000 | [diff] [blame] | 304 | /* -L makes sense only with -o or -p */ |
| 305 | |
Denis Vlasenko | 83518d1 | 2009-03-20 22:17:13 +0000 | [diff] [blame] | 306 | #if !ENABLE_FEATURE_CPIO_O |
Denis Vlasenko | 05af832 | 2009-03-20 23:01:48 +0000 | [diff] [blame] | 307 | opt = getopt32(argv, OPTION_STR, &cpio_filename); |
Denis Vlasenko | 83518d1 | 2009-03-20 22:17:13 +0000 | [diff] [blame] | 308 | #else |
Denis Vlasenko | 5e34ff2 | 2009-04-21 11:09:40 +0000 | [diff] [blame] | 309 | opt = getopt32(argv, OPTION_STR "oH:" IF_FEATURE_CPIO_P("p"), &cpio_filename, &cpio_fmt); |
Denis Vlasenko | 83518d1 | 2009-03-20 22:17:13 +0000 | [diff] [blame] | 310 | if (opt & CPIO_OPT_PASSTHROUGH) { |
| 311 | pid_t pid; |
| 312 | struct fd_pair pp; |
Glenn L McGrath | 10b7813 | 2004-02-25 09:30:06 +0000 | [diff] [blame] | 313 | |
Denis Vlasenko | 83518d1 | 2009-03-20 22:17:13 +0000 | [diff] [blame] | 314 | if (argv[optind] == NULL) |
| 315 | bb_show_usage(); |
| 316 | if (opt & CPIO_OPT_CREATE_LEADING_DIR) |
| 317 | mkdir(argv[optind], 0777); |
| 318 | /* Crude existence check: |
| 319 | * close(xopen(argv[optind], O_RDONLY | O_DIRECTORY)); |
| 320 | * We can also xopen, fstat, IS_DIR, later fchdir. |
| 321 | * This would check for existence earlier and cleaner. |
| 322 | * As it stands now, if we fail xchdir later, |
| 323 | * child dies on EPIPE, unless it caught |
| 324 | * a diffrerent problem earlier. |
| 325 | * This is good enough for now. |
| 326 | */ |
| 327 | #if !BB_MMU |
| 328 | pp.rd = 3; |
| 329 | pp.wr = 4; |
| 330 | if (!re_execed) { |
| 331 | close(3); |
| 332 | close(4); |
| 333 | xpiped_pair(pp); |
| 334 | } |
| 335 | #else |
| 336 | xpiped_pair(pp); |
| 337 | #endif |
| 338 | pid = fork_or_rexec(argv); |
| 339 | if (pid == 0) { /* child */ |
| 340 | close(pp.rd); |
| 341 | xmove_fd(pp.wr, STDOUT_FILENO); |
| 342 | goto dump; |
| 343 | } |
| 344 | /* parent */ |
| 345 | xchdir(argv[optind++]); |
| 346 | close(pp.wr); |
| 347 | xmove_fd(pp.rd, STDIN_FILENO); |
| 348 | opt &= ~CPIO_OPT_PASSTHROUGH; |
| 349 | opt |= CPIO_OPT_EXTRACT; |
| 350 | goto skip; |
| 351 | } |
| 352 | /* -o */ |
Denis Vlasenko | 261f237 | 2008-04-05 00:07:46 +0000 | [diff] [blame] | 353 | if (opt & CPIO_OPT_CREATE) { |
Denis Vlasenko | 83518d1 | 2009-03-20 22:17:13 +0000 | [diff] [blame] | 354 | if (*cpio_fmt != 'n') /* we _require_ "-H newc" */ |
Denis Vlasenko | 261f237 | 2008-04-05 00:07:46 +0000 | [diff] [blame] | 355 | bb_show_usage(); |
| 356 | if (opt & CPIO_OPT_FILE) { |
| 357 | fclose(stdout); |
Denis Vlasenko | 5415c85 | 2008-07-21 23:05:26 +0000 | [diff] [blame] | 358 | stdout = fopen_for_write(cpio_filename); |
Denis Vlasenko | 261f237 | 2008-04-05 00:07:46 +0000 | [diff] [blame] | 359 | /* Paranoia: I don't trust libc that much */ |
| 360 | xdup2(fileno(stdout), STDOUT_FILENO); |
| 361 | } |
Denis Vlasenko | 83518d1 | 2009-03-20 22:17:13 +0000 | [diff] [blame] | 362 | dump: |
Denis Vlasenko | 261f237 | 2008-04-05 00:07:46 +0000 | [diff] [blame] | 363 | return cpio_o(); |
| 364 | } |
Denis Vlasenko | 83518d1 | 2009-03-20 22:17:13 +0000 | [diff] [blame] | 365 | skip: |
Denis Vlasenko | 261f237 | 2008-04-05 00:07:46 +0000 | [diff] [blame] | 366 | #endif |
| 367 | argv += optind; |
Glenn L McGrath | 10b7813 | 2004-02-25 09:30:06 +0000 | [diff] [blame] | 368 | |
Denis Vlasenko | 83518d1 | 2009-03-20 22:17:13 +0000 | [diff] [blame] | 369 | archive_handle = init_handle(); |
| 370 | archive_handle->src_fd = STDIN_FILENO; |
| 371 | archive_handle->seek = seek_by_read; |
| 372 | archive_handle->ah_flags = ARCHIVE_EXTRACT_NEWER; |
| 373 | |
Glenn L McGrath | 10b7813 | 2004-02-25 09:30:06 +0000 | [diff] [blame] | 374 | /* One of either extract or test options must be given */ |
| 375 | if ((opt & (CPIO_OPT_TEST | CPIO_OPT_EXTRACT)) == 0) { |
| 376 | bb_show_usage(); |
| 377 | } |
| 378 | |
| 379 | if (opt & CPIO_OPT_TEST) { |
Rob Landley | b7128c6 | 2005-09-11 01:05:30 +0000 | [diff] [blame] | 380 | /* if both extract and test options are given, ignore extract option */ |
Denis Vlasenko | 83518d1 | 2009-03-20 22:17:13 +0000 | [diff] [blame] | 381 | opt &= ~CPIO_OPT_EXTRACT; |
Glenn L McGrath | 10b7813 | 2004-02-25 09:30:06 +0000 | [diff] [blame] | 382 | archive_handle->action_header = header_list; |
| 383 | } |
| 384 | if (opt & CPIO_OPT_EXTRACT) { |
| 385 | archive_handle->action_data = data_extract_all; |
Denys Vlasenko | d30b89c | 2009-06-26 01:55:45 +0200 | [diff] [blame] | 386 | if (opt & CPIO_OPT_2STDOUT) |
| 387 | archive_handle->action_data = data_extract_to_stdout; |
Glenn L McGrath | 10b7813 | 2004-02-25 09:30:06 +0000 | [diff] [blame] | 388 | } |
| 389 | if (opt & CPIO_OPT_UNCONDITIONAL) { |
Denys Vlasenko | d57d626 | 2009-09-17 02:43:14 +0200 | [diff] [blame] | 390 | archive_handle->ah_flags |= ARCHIVE_UNLINK_OLD; |
Denis Vlasenko | a60936d | 2008-06-28 05:04:09 +0000 | [diff] [blame] | 391 | archive_handle->ah_flags &= ~ARCHIVE_EXTRACT_NEWER; |
Glenn L McGrath | 10b7813 | 2004-02-25 09:30:06 +0000 | [diff] [blame] | 392 | } |
| 393 | if (opt & CPIO_OPT_VERBOSE) { |
| 394 | if (archive_handle->action_header == header_list) { |
| 395 | archive_handle->action_header = header_verbose_list; |
| 396 | } else { |
| 397 | archive_handle->action_header = header_list; |
Glenn L McGrath | 8f5b63e | 2001-06-22 09:22:06 +0000 | [diff] [blame] | 398 | } |
| 399 | } |
Denis Vlasenko | 261f237 | 2008-04-05 00:07:46 +0000 | [diff] [blame] | 400 | if (opt & CPIO_OPT_FILE) { /* -F */ |
Rob Landley | 86b4d64 | 2006-08-03 17:58:17 +0000 | [diff] [blame] | 401 | archive_handle->src_fd = xopen(cpio_filename, O_RDONLY); |
Glenn L McGrath | 10b7813 | 2004-02-25 09:30:06 +0000 | [diff] [blame] | 402 | archive_handle->seek = seek_by_jump; |
| 403 | } |
| 404 | if (opt & CPIO_OPT_CREATE_LEADING_DIR) { |
Denis Vlasenko | a60936d | 2008-06-28 05:04:09 +0000 | [diff] [blame] | 405 | archive_handle->ah_flags |= ARCHIVE_CREATE_LEADING_DIRS; |
Glenn L McGrath | 10b7813 | 2004-02-25 09:30:06 +0000 | [diff] [blame] | 406 | } |
Denis Vlasenko | bbd55c9 | 2008-06-27 15:52:07 +0000 | [diff] [blame] | 407 | if (opt & CPIO_OPT_PRESERVE_MTIME) { |
Denys Vlasenko | d57d626 | 2009-09-17 02:43:14 +0200 | [diff] [blame] | 408 | archive_handle->ah_flags |= ARCHIVE_RESTORE_DATE; |
Denis Vlasenko | bbd55c9 | 2008-06-27 15:52:07 +0000 | [diff] [blame] | 409 | } |
Glenn L McGrath | 8f5b63e | 2001-06-22 09:22:06 +0000 | [diff] [blame] | 410 | |
Denis Vlasenko | 261f237 | 2008-04-05 00:07:46 +0000 | [diff] [blame] | 411 | while (*argv) { |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 412 | archive_handle->filter = filter_accept_list; |
Denis Vlasenko | 261f237 | 2008-04-05 00:07:46 +0000 | [diff] [blame] | 413 | llist_add_to(&(archive_handle->accept), *argv); |
| 414 | argv++; |
Glenn L McGrath | 8f5b63e | 2001-06-22 09:22:06 +0000 | [diff] [blame] | 415 | } |
| 416 | |
Denis Vlasenko | cf4dd07 | 2008-10-17 14:11:04 +0000 | [diff] [blame] | 417 | /* see get_header_cpio */ |
| 418 | archive_handle->ah_priv[2] = (void*) ~(ptrdiff_t)0; |
Denis Vlasenko | 261f237 | 2008-04-05 00:07:46 +0000 | [diff] [blame] | 419 | while (get_header_cpio(archive_handle) == EXIT_SUCCESS) |
| 420 | continue; |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 421 | |
Denys Vlasenko | d30b89c | 2009-06-26 01:55:45 +0200 | [diff] [blame] | 422 | if (archive_handle->ah_priv[2] != (void*) ~(ptrdiff_t)0 |
| 423 | && !(opt & CPIO_OPT_QUIET) |
| 424 | ) |
Denis Vlasenko | cf4dd07 | 2008-10-17 14:11:04 +0000 | [diff] [blame] | 425 | printf("%lu blocks\n", (unsigned long)(ptrdiff_t)(archive_handle->ah_priv[2])); |
Denis Vlasenko | d83676e | 2008-10-17 14:03:56 +0000 | [diff] [blame] | 426 | |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 427 | return EXIT_SUCCESS; |
Glenn L McGrath | 8f5b63e | 2001-06-22 09:22:06 +0000 | [diff] [blame] | 428 | } |