Commit | Line | Data |
---|---|---|
b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 LT |
2 | #include <stdio.h> |
3 | #include <stdlib.h> | |
ea804871 DD |
4 | #include <stdint.h> |
5 | #include <stdbool.h> | |
1da177e4 LT |
6 | #include <sys/types.h> |
7 | #include <sys/stat.h> | |
8 | #include <string.h> | |
9 | #include <unistd.h> | |
10 | #include <time.h> | |
11 | #include <fcntl.h> | |
12 | #include <errno.h> | |
13 | #include <ctype.h> | |
14 | #include <limits.h> | |
15 | ||
16 | /* | |
17 | * Original work by Jeff Garzik | |
18 | * | |
19 | * External file lists, symlink, pipe and fifo support by Thayne Harbaugh | |
24fa5096 | 20 | * Hard link support by Luciano Rocha |
1da177e4 LT |
21 | */ |
22 | ||
23 | #define xstr(s) #s | |
24 | #define str(s) xstr(s) | |
3a2699cf | 25 | #define MIN(a, b) ((a) < (b) ? (a) : (b)) |
1da177e4 LT |
26 | |
27 | static unsigned int offset; | |
28 | static unsigned int ino = 721; | |
a8b8017c | 29 | static time_t default_mtime; |
f3b2306b | 30 | static bool do_file_mtime; |
ea804871 | 31 | static bool do_csum = false; |
1da177e4 LT |
32 | |
33 | struct file_handler { | |
34 | const char *type; | |
35 | int (*handler)(const char *line); | |
36 | }; | |
37 | ||
38 | static void push_string(const char *name) | |
39 | { | |
40 | unsigned int name_len = strlen(name) + 1; | |
41 | ||
42 | fputs(name, stdout); | |
43 | putchar(0); | |
44 | offset += name_len; | |
45 | } | |
46 | ||
47 | static void push_pad (void) | |
48 | { | |
49 | while (offset & 3) { | |
50 | putchar(0); | |
51 | offset++; | |
52 | } | |
53 | } | |
54 | ||
55 | static void push_rest(const char *name) | |
56 | { | |
57 | unsigned int name_len = strlen(name) + 1; | |
58 | unsigned int tmp_ofs; | |
59 | ||
60 | fputs(name, stdout); | |
61 | putchar(0); | |
62 | offset += name_len; | |
63 | ||
64 | tmp_ofs = name_len + 110; | |
65 | while (tmp_ofs & 3) { | |
66 | putchar(0); | |
67 | offset++; | |
68 | tmp_ofs++; | |
69 | } | |
70 | } | |
71 | ||
72 | static void push_hdr(const char *s) | |
73 | { | |
74 | fputs(s, stdout); | |
75 | offset += 110; | |
76 | } | |
77 | ||
78 | static void cpio_trailer(void) | |
79 | { | |
80 | char s[256]; | |
81 | const char name[] = "TRAILER!!!"; | |
82 | ||
83 | sprintf(s, "%s%08X%08X%08lX%08lX%08X%08lX" | |
84 | "%08X%08X%08X%08X%08X%08X%08X", | |
ea804871 | 85 | do_csum ? "070702" : "070701", /* magic */ |
1da177e4 LT |
86 | 0, /* ino */ |
87 | 0, /* mode */ | |
88 | (long) 0, /* uid */ | |
89 | (long) 0, /* gid */ | |
90 | 1, /* nlink */ | |
91 | (long) 0, /* mtime */ | |
92 | 0, /* filesize */ | |
93 | 0, /* major */ | |
94 | 0, /* minor */ | |
95 | 0, /* rmajor */ | |
96 | 0, /* rminor */ | |
97 | (unsigned)strlen(name)+1, /* namesize */ | |
98 | 0); /* chksum */ | |
99 | push_hdr(s); | |
100 | push_rest(name); | |
101 | ||
102 | while (offset % 512) { | |
103 | putchar(0); | |
104 | offset++; | |
105 | } | |
106 | } | |
107 | ||
108 | static int cpio_mkslink(const char *name, const char *target, | |
109 | unsigned int mode, uid_t uid, gid_t gid) | |
110 | { | |
111 | char s[256]; | |
1da177e4 | 112 | |
43f901fb TC |
113 | if (name[0] == '/') |
114 | name++; | |
1da177e4 LT |
115 | sprintf(s,"%s%08X%08X%08lX%08lX%08X%08lX" |
116 | "%08X%08X%08X%08X%08X%08X%08X", | |
ea804871 | 117 | do_csum ? "070702" : "070701", /* magic */ |
1da177e4 LT |
118 | ino++, /* ino */ |
119 | S_IFLNK | mode, /* mode */ | |
120 | (long) uid, /* uid */ | |
121 | (long) gid, /* gid */ | |
122 | 1, /* nlink */ | |
a8b8017c | 123 | (long) default_mtime, /* mtime */ |
1da177e4 LT |
124 | (unsigned)strlen(target)+1, /* filesize */ |
125 | 3, /* major */ | |
126 | 1, /* minor */ | |
127 | 0, /* rmajor */ | |
128 | 0, /* rminor */ | |
129 | (unsigned)strlen(name) + 1,/* namesize */ | |
130 | 0); /* chksum */ | |
131 | push_hdr(s); | |
132 | push_string(name); | |
133 | push_pad(); | |
134 | push_string(target); | |
135 | push_pad(); | |
136 | return 0; | |
137 | } | |
138 | ||
139 | static int cpio_mkslink_line(const char *line) | |
140 | { | |
141 | char name[PATH_MAX + 1]; | |
142 | char target[PATH_MAX + 1]; | |
143 | unsigned int mode; | |
144 | int uid; | |
145 | int gid; | |
146 | int rc = -1; | |
147 | ||
148 | if (5 != sscanf(line, "%" str(PATH_MAX) "s %" str(PATH_MAX) "s %o %d %d", name, target, &mode, &uid, &gid)) { | |
149 | fprintf(stderr, "Unrecognized dir format '%s'", line); | |
150 | goto fail; | |
151 | } | |
152 | rc = cpio_mkslink(name, target, mode, uid, gid); | |
153 | fail: | |
154 | return rc; | |
155 | } | |
156 | ||
157 | static int cpio_mkgeneric(const char *name, unsigned int mode, | |
158 | uid_t uid, gid_t gid) | |
159 | { | |
160 | char s[256]; | |
1da177e4 | 161 | |
43f901fb TC |
162 | if (name[0] == '/') |
163 | name++; | |
1da177e4 LT |
164 | sprintf(s,"%s%08X%08X%08lX%08lX%08X%08lX" |
165 | "%08X%08X%08X%08X%08X%08X%08X", | |
ea804871 | 166 | do_csum ? "070702" : "070701", /* magic */ |
1da177e4 LT |
167 | ino++, /* ino */ |
168 | mode, /* mode */ | |
169 | (long) uid, /* uid */ | |
170 | (long) gid, /* gid */ | |
171 | 2, /* nlink */ | |
a8b8017c | 172 | (long) default_mtime, /* mtime */ |
1da177e4 LT |
173 | 0, /* filesize */ |
174 | 3, /* major */ | |
175 | 1, /* minor */ | |
176 | 0, /* rmajor */ | |
177 | 0, /* rminor */ | |
178 | (unsigned)strlen(name) + 1,/* namesize */ | |
179 | 0); /* chksum */ | |
180 | push_hdr(s); | |
181 | push_rest(name); | |
182 | return 0; | |
183 | } | |
184 | ||
185 | enum generic_types { | |
186 | GT_DIR, | |
187 | GT_PIPE, | |
188 | GT_SOCK | |
189 | }; | |
190 | ||
191 | struct generic_type { | |
192 | const char *type; | |
193 | mode_t mode; | |
194 | }; | |
195 | ||
3510c5cf | 196 | static const struct generic_type generic_type_table[] = { |
1da177e4 LT |
197 | [GT_DIR] = { |
198 | .type = "dir", | |
199 | .mode = S_IFDIR | |
200 | }, | |
201 | [GT_PIPE] = { | |
202 | .type = "pipe", | |
203 | .mode = S_IFIFO | |
204 | }, | |
205 | [GT_SOCK] = { | |
206 | .type = "sock", | |
207 | .mode = S_IFSOCK | |
208 | } | |
209 | }; | |
210 | ||
211 | static int cpio_mkgeneric_line(const char *line, enum generic_types gt) | |
212 | { | |
213 | char name[PATH_MAX + 1]; | |
214 | unsigned int mode; | |
215 | int uid; | |
216 | int gid; | |
217 | int rc = -1; | |
218 | ||
219 | if (4 != sscanf(line, "%" str(PATH_MAX) "s %o %d %d", name, &mode, &uid, &gid)) { | |
220 | fprintf(stderr, "Unrecognized %s format '%s'", | |
221 | line, generic_type_table[gt].type); | |
222 | goto fail; | |
223 | } | |
224 | mode |= generic_type_table[gt].mode; | |
225 | rc = cpio_mkgeneric(name, mode, uid, gid); | |
226 | fail: | |
227 | return rc; | |
228 | } | |
229 | ||
230 | static int cpio_mkdir_line(const char *line) | |
231 | { | |
232 | return cpio_mkgeneric_line(line, GT_DIR); | |
233 | } | |
234 | ||
235 | static int cpio_mkpipe_line(const char *line) | |
236 | { | |
237 | return cpio_mkgeneric_line(line, GT_PIPE); | |
238 | } | |
239 | ||
240 | static int cpio_mksock_line(const char *line) | |
241 | { | |
242 | return cpio_mkgeneric_line(line, GT_SOCK); | |
243 | } | |
244 | ||
245 | static int cpio_mknod(const char *name, unsigned int mode, | |
246 | uid_t uid, gid_t gid, char dev_type, | |
247 | unsigned int maj, unsigned int min) | |
248 | { | |
249 | char s[256]; | |
1da177e4 LT |
250 | |
251 | if (dev_type == 'b') | |
252 | mode |= S_IFBLK; | |
253 | else | |
254 | mode |= S_IFCHR; | |
255 | ||
43f901fb TC |
256 | if (name[0] == '/') |
257 | name++; | |
1da177e4 LT |
258 | sprintf(s,"%s%08X%08X%08lX%08lX%08X%08lX" |
259 | "%08X%08X%08X%08X%08X%08X%08X", | |
ea804871 | 260 | do_csum ? "070702" : "070701", /* magic */ |
1da177e4 LT |
261 | ino++, /* ino */ |
262 | mode, /* mode */ | |
263 | (long) uid, /* uid */ | |
264 | (long) gid, /* gid */ | |
265 | 1, /* nlink */ | |
a8b8017c | 266 | (long) default_mtime, /* mtime */ |
1da177e4 LT |
267 | 0, /* filesize */ |
268 | 3, /* major */ | |
269 | 1, /* minor */ | |
270 | maj, /* rmajor */ | |
271 | min, /* rminor */ | |
272 | (unsigned)strlen(name) + 1,/* namesize */ | |
273 | 0); /* chksum */ | |
274 | push_hdr(s); | |
275 | push_rest(name); | |
276 | return 0; | |
277 | } | |
278 | ||
279 | static int cpio_mknod_line(const char *line) | |
280 | { | |
281 | char name[PATH_MAX + 1]; | |
282 | unsigned int mode; | |
283 | int uid; | |
284 | int gid; | |
285 | char dev_type; | |
286 | unsigned int maj; | |
287 | unsigned int min; | |
288 | int rc = -1; | |
289 | ||
290 | if (7 != sscanf(line, "%" str(PATH_MAX) "s %o %d %d %c %u %u", | |
291 | name, &mode, &uid, &gid, &dev_type, &maj, &min)) { | |
292 | fprintf(stderr, "Unrecognized nod format '%s'", line); | |
293 | goto fail; | |
294 | } | |
295 | rc = cpio_mknod(name, mode, uid, gid, dev_type, maj, min); | |
296 | fail: | |
297 | return rc; | |
298 | } | |
299 | ||
ea804871 DD |
300 | static int cpio_mkfile_csum(int fd, unsigned long size, uint32_t *csum) |
301 | { | |
302 | while (size) { | |
303 | unsigned char filebuf[65536]; | |
304 | ssize_t this_read; | |
305 | size_t i, this_size = MIN(size, sizeof(filebuf)); | |
306 | ||
307 | this_read = read(fd, filebuf, this_size); | |
308 | if (this_read <= 0 || this_read > this_size) | |
309 | return -1; | |
310 | ||
311 | for (i = 0; i < this_read; i++) | |
312 | *csum += filebuf[i]; | |
313 | ||
314 | size -= this_read; | |
315 | } | |
316 | /* seek back to the start for data segment I/O */ | |
317 | if (lseek(fd, 0, SEEK_SET) < 0) | |
318 | return -1; | |
319 | ||
320 | return 0; | |
321 | } | |
322 | ||
1da177e4 | 323 | static int cpio_mkfile(const char *name, const char *location, |
24fa5096 LR |
324 | unsigned int mode, uid_t uid, gid_t gid, |
325 | unsigned int nlinks) | |
1da177e4 LT |
326 | { |
327 | char s[256]; | |
1da177e4 | 328 | struct stat buf; |
3a2699cf | 329 | unsigned long size; |
462cd772 | 330 | int file; |
1da177e4 LT |
331 | int retval; |
332 | int rc = -1; | |
f3b2306b | 333 | time_t mtime; |
24fa5096 | 334 | int namesize; |
20f1de65 | 335 | unsigned int i; |
ea804871 | 336 | uint32_t csum = 0; |
1da177e4 LT |
337 | |
338 | mode |= S_IFREG; | |
339 | ||
1da177e4 LT |
340 | file = open (location, O_RDONLY); |
341 | if (file < 0) { | |
342 | fprintf (stderr, "File %s could not be opened for reading\n", location); | |
343 | goto error; | |
344 | } | |
345 | ||
a3c888fc | 346 | retval = fstat(file, &buf); |
96aebafa | 347 | if (retval) { |
a3c888fc | 348 | fprintf(stderr, "File %s could not be stat()'ed\n", location); |
96aebafa JJ |
349 | goto error; |
350 | } | |
351 | ||
f3b2306b DS |
352 | if (do_file_mtime) { |
353 | mtime = default_mtime; | |
354 | } else { | |
355 | mtime = buf.st_mtime; | |
356 | if (mtime > 0xffffffff) { | |
357 | fprintf(stderr, "%s: Timestamp exceeds maximum cpio timestamp, clipping.\n", | |
358 | location); | |
359 | mtime = 0xffffffff; | |
360 | } | |
4c9d410f | 361 | |
f3b2306b DS |
362 | if (mtime < 0) { |
363 | fprintf(stderr, "%s: Timestamp negative, clipping.\n", | |
364 | location); | |
365 | mtime = 0; | |
366 | } | |
5efb685b BG |
367 | } |
368 | ||
3a2699cf DD |
369 | if (buf.st_size > 0xffffffff) { |
370 | fprintf(stderr, "%s: Size exceeds maximum cpio file size\n", | |
371 | location); | |
1da177e4 LT |
372 | goto error; |
373 | } | |
374 | ||
ea804871 DD |
375 | if (do_csum && cpio_mkfile_csum(file, buf.st_size, &csum) < 0) { |
376 | fprintf(stderr, "Failed to checksum file %s\n", location); | |
377 | goto error; | |
378 | } | |
379 | ||
24fa5096 LR |
380 | size = 0; |
381 | for (i = 1; i <= nlinks; i++) { | |
382 | /* data goes on last link */ | |
3a2699cf DD |
383 | if (i == nlinks) |
384 | size = buf.st_size; | |
24fa5096 | 385 | |
43f901fb TC |
386 | if (name[0] == '/') |
387 | name++; | |
24fa5096 LR |
388 | namesize = strlen(name) + 1; |
389 | sprintf(s,"%s%08X%08X%08lX%08lX%08X%08lX" | |
390 | "%08lX%08X%08X%08X%08X%08X%08X", | |
ea804871 | 391 | do_csum ? "070702" : "070701", /* magic */ |
24fa5096 LR |
392 | ino, /* ino */ |
393 | mode, /* mode */ | |
394 | (long) uid, /* uid */ | |
395 | (long) gid, /* gid */ | |
396 | nlinks, /* nlink */ | |
f3b2306b | 397 | (long) mtime, /* mtime */ |
24fa5096 LR |
398 | size, /* filesize */ |
399 | 3, /* major */ | |
400 | 1, /* minor */ | |
401 | 0, /* rmajor */ | |
402 | 0, /* rminor */ | |
403 | namesize, /* namesize */ | |
ea804871 | 404 | size ? csum : 0); /* chksum */ |
24fa5096 LR |
405 | push_hdr(s); |
406 | push_string(name); | |
407 | push_pad(); | |
408 | ||
3a2699cf DD |
409 | while (size) { |
410 | unsigned char filebuf[65536]; | |
411 | ssize_t this_read; | |
412 | size_t this_size = MIN(size, sizeof(filebuf)); | |
413 | ||
414 | this_read = read(file, filebuf, this_size); | |
415 | if (this_read <= 0 || this_read > this_size) { | |
416 | fprintf(stderr, "Can not read %s file\n", location); | |
417 | goto error; | |
418 | } | |
419 | ||
420 | if (fwrite(filebuf, this_read, 1, stdout) != 1) { | |
6d87fea4 MF |
421 | fprintf(stderr, "writing filebuf failed\n"); |
422 | goto error; | |
423 | } | |
3a2699cf DD |
424 | offset += this_read; |
425 | size -= this_read; | |
24fa5096 | 426 | } |
3a2699cf | 427 | push_pad(); |
24fa5096 LR |
428 | |
429 | name += namesize; | |
430 | } | |
431 | ino++; | |
1da177e4 | 432 | rc = 0; |
3a2699cf | 433 | |
1da177e4 | 434 | error: |
3a2699cf DD |
435 | if (file >= 0) |
436 | close(file); | |
1da177e4 LT |
437 | return rc; |
438 | } | |
439 | ||
3b1ec9fb SG |
440 | static char *cpio_replace_env(char *new_location) |
441 | { | |
20f1de65 | 442 | char expanded[PATH_MAX + 1]; |
c725ee54 MN |
443 | char *start, *end, *var; |
444 | ||
445 | while ((start = strstr(new_location, "${")) && | |
446 | (end = strchr(start + 2, '}'))) { | |
447 | *start = *end = 0; | |
448 | var = getenv(start + 2); | |
449 | snprintf(expanded, sizeof expanded, "%s%s%s", | |
450 | new_location, var ? var : "", end + 1); | |
451 | strcpy(new_location, expanded); | |
20f1de65 KC |
452 | } |
453 | ||
454 | return new_location; | |
3b1ec9fb SG |
455 | } |
456 | ||
1da177e4 LT |
457 | static int cpio_mkfile_line(const char *line) |
458 | { | |
459 | char name[PATH_MAX + 1]; | |
24fa5096 | 460 | char *dname = NULL; /* malloc'ed buffer for hard links */ |
1da177e4 LT |
461 | char location[PATH_MAX + 1]; |
462 | unsigned int mode; | |
463 | int uid; | |
464 | int gid; | |
24fa5096 LR |
465 | int nlinks = 1; |
466 | int end = 0, dname_len = 0; | |
1da177e4 LT |
467 | int rc = -1; |
468 | ||
24fa5096 LR |
469 | if (5 > sscanf(line, "%" str(PATH_MAX) "s %" str(PATH_MAX) |
470 | "s %o %d %d %n", | |
471 | name, location, &mode, &uid, &gid, &end)) { | |
1da177e4 LT |
472 | fprintf(stderr, "Unrecognized file format '%s'", line); |
473 | goto fail; | |
474 | } | |
24fa5096 LR |
475 | if (end && isgraph(line[end])) { |
476 | int len; | |
477 | int nend; | |
478 | ||
479 | dname = malloc(strlen(line)); | |
480 | if (!dname) { | |
481 | fprintf (stderr, "out of memory (%d)\n", dname_len); | |
482 | goto fail; | |
483 | } | |
484 | ||
485 | dname_len = strlen(name) + 1; | |
486 | memcpy(dname, name, dname_len); | |
487 | ||
488 | do { | |
489 | nend = 0; | |
490 | if (sscanf(line + end, "%" str(PATH_MAX) "s %n", | |
491 | name, &nend) < 1) | |
492 | break; | |
493 | len = strlen(name) + 1; | |
494 | memcpy(dname + dname_len, name, len); | |
495 | dname_len += len; | |
496 | nlinks++; | |
497 | end += nend; | |
498 | } while (isgraph(line[end])); | |
499 | } else { | |
500 | dname = name; | |
501 | } | |
3b1ec9fb SG |
502 | rc = cpio_mkfile(dname, cpio_replace_env(location), |
503 | mode, uid, gid, nlinks); | |
1da177e4 | 504 | fail: |
24fa5096 | 505 | if (dname_len) free(dname); |
1da177e4 LT |
506 | return rc; |
507 | } | |
508 | ||
5c725138 | 509 | static void usage(const char *prog) |
1da177e4 LT |
510 | { |
511 | fprintf(stderr, "Usage:\n" | |
ea804871 | 512 | "\t%s [-t <timestamp>] [-c] <cpio_list>\n" |
1da177e4 LT |
513 | "\n" |
514 | "<cpio_list> is a file containing newline separated entries that\n" | |
515 | "describe the files to be included in the initramfs archive:\n" | |
516 | "\n" | |
517 | "# a comment\n" | |
24fa5096 | 518 | "file <name> <location> <mode> <uid> <gid> [<hard links>]\n" |
1da177e4 LT |
519 | "dir <name> <mode> <uid> <gid>\n" |
520 | "nod <name> <mode> <uid> <gid> <dev_type> <maj> <min>\n" | |
521 | "slink <name> <target> <mode> <uid> <gid>\n" | |
522 | "pipe <name> <mode> <uid> <gid>\n" | |
523 | "sock <name> <mode> <uid> <gid>\n" | |
524 | "\n" | |
24fa5096 LR |
525 | "<name> name of the file/dir/nod/etc in the archive\n" |
526 | "<location> location of the file in the current filesystem\n" | |
3b1ec9fb | 527 | " expands shell variables quoted with ${}\n" |
24fa5096 LR |
528 | "<target> link target\n" |
529 | "<mode> mode/permissions of the file\n" | |
530 | "<uid> user id (0=root)\n" | |
531 | "<gid> group id (0=root)\n" | |
532 | "<dev_type> device type (b=block, c=character)\n" | |
533 | "<maj> major number of nod\n" | |
534 | "<min> minor number of nod\n" | |
535 | "<hard links> space separated list of other links to file\n" | |
1da177e4 LT |
536 | "\n" |
537 | "example:\n" | |
538 | "# A simple initramfs\n" | |
539 | "dir /dev 0755 0 0\n" | |
540 | "nod /dev/console 0600 0 0 c 5 1\n" | |
541 | "dir /root 0700 0 0\n" | |
542 | "dir /sbin 0755 0 0\n" | |
a8b8017c MM |
543 | "file /sbin/kinit /usr/src/klibc/kinit/kinit 0755 0 0\n" |
544 | "\n" | |
545 | "<timestamp> is time in seconds since Epoch that will be used\n" | |
f3b2306b DS |
546 | "as mtime for symlinks, directories, regular and special files.\n" |
547 | "The default is to use the current time for all files, but\n" | |
548 | "preserve modification time for regular files.\n" | |
ea804871 | 549 | "-c: calculate and store 32-bit checksums for file data.\n", |
1da177e4 LT |
550 | prog); |
551 | } | |
552 | ||
3510c5cf | 553 | static const struct file_handler file_handler_table[] = { |
1da177e4 LT |
554 | { |
555 | .type = "file", | |
556 | .handler = cpio_mkfile_line, | |
557 | }, { | |
558 | .type = "nod", | |
559 | .handler = cpio_mknod_line, | |
560 | }, { | |
561 | .type = "dir", | |
562 | .handler = cpio_mkdir_line, | |
563 | }, { | |
564 | .type = "slink", | |
565 | .handler = cpio_mkslink_line, | |
566 | }, { | |
567 | .type = "pipe", | |
568 | .handler = cpio_mkpipe_line, | |
569 | }, { | |
570 | .type = "sock", | |
571 | .handler = cpio_mksock_line, | |
572 | }, { | |
573 | .type = NULL, | |
574 | .handler = NULL, | |
575 | } | |
576 | }; | |
577 | ||
578 | #define LINE_SIZE (2 * PATH_MAX + 50) | |
579 | ||
580 | int main (int argc, char *argv[]) | |
581 | { | |
582 | FILE *cpio_list; | |
583 | char line[LINE_SIZE]; | |
584 | char *args, *type; | |
585 | int ec = 0; | |
586 | int line_nr = 0; | |
a8b8017c MM |
587 | const char *filename; |
588 | ||
589 | default_mtime = time(NULL); | |
590 | while (1) { | |
ea804871 | 591 | int opt = getopt(argc, argv, "t:ch"); |
a8b8017c MM |
592 | char *invalid; |
593 | ||
594 | if (opt == -1) | |
595 | break; | |
596 | switch (opt) { | |
597 | case 't': | |
598 | default_mtime = strtol(optarg, &invalid, 10); | |
599 | if (!*optarg || *invalid) { | |
600 | fprintf(stderr, "Invalid timestamp: %s\n", | |
601 | optarg); | |
602 | usage(argv[0]); | |
603 | exit(1); | |
604 | } | |
f3b2306b | 605 | do_file_mtime = true; |
a8b8017c | 606 | break; |
ea804871 DD |
607 | case 'c': |
608 | do_csum = true; | |
609 | break; | |
a8b8017c MM |
610 | case 'h': |
611 | case '?': | |
612 | usage(argv[0]); | |
613 | exit(opt == 'h' ? 0 : 1); | |
614 | } | |
615 | } | |
1da177e4 | 616 | |
4c9d410f NS |
617 | /* |
618 | * Timestamps after 2106-02-07 06:28:15 UTC have an ascii hex time_t | |
619 | * representation that exceeds 8 chars and breaks the cpio header | |
5efb685b | 620 | * specification. Negative timestamps similarly exceed 8 chars. |
4c9d410f | 621 | */ |
5efb685b BG |
622 | if (default_mtime > 0xffffffff || default_mtime < 0) { |
623 | fprintf(stderr, "ERROR: Timestamp out of range for cpio format\n"); | |
4c9d410f NS |
624 | exit(1); |
625 | } | |
626 | ||
a8b8017c | 627 | if (argc - optind != 1) { |
1da177e4 LT |
628 | usage(argv[0]); |
629 | exit(1); | |
630 | } | |
a8b8017c MM |
631 | filename = argv[optind]; |
632 | if (!strcmp(filename, "-")) | |
f2434ec1 | 633 | cpio_list = stdin; |
a8b8017c | 634 | else if (!(cpio_list = fopen(filename, "r"))) { |
1da177e4 | 635 | fprintf(stderr, "ERROR: unable to open '%s': %s\n\n", |
a8b8017c | 636 | filename, strerror(errno)); |
1da177e4 LT |
637 | usage(argv[0]); |
638 | exit(1); | |
639 | } | |
640 | ||
641 | while (fgets(line, LINE_SIZE, cpio_list)) { | |
642 | int type_idx; | |
643 | size_t slen = strlen(line); | |
644 | ||
645 | line_nr++; | |
646 | ||
647 | if ('#' == *line) { | |
648 | /* comment - skip to next line */ | |
649 | continue; | |
650 | } | |
651 | ||
652 | if (! (type = strtok(line, " \t"))) { | |
653 | fprintf(stderr, | |
654 | "ERROR: incorrect format, could not locate file type line %d: '%s'\n", | |
655 | line_nr, line); | |
656 | ec = -1; | |
aa1e816f | 657 | break; |
1da177e4 LT |
658 | } |
659 | ||
660 | if ('\n' == *type) { | |
661 | /* a blank line */ | |
662 | continue; | |
663 | } | |
664 | ||
665 | if (slen == strlen(type)) { | |
666 | /* must be an empty line */ | |
667 | continue; | |
668 | } | |
669 | ||
670 | if (! (args = strtok(NULL, "\n"))) { | |
671 | fprintf(stderr, | |
672 | "ERROR: incorrect format, newline required line %d: '%s'\n", | |
673 | line_nr, line); | |
674 | ec = -1; | |
675 | } | |
676 | ||
677 | for (type_idx = 0; file_handler_table[type_idx].type; type_idx++) { | |
678 | int rc; | |
679 | if (! strcmp(line, file_handler_table[type_idx].type)) { | |
680 | if ((rc = file_handler_table[type_idx].handler(args))) { | |
681 | ec = rc; | |
682 | fprintf(stderr, " line %d\n", line_nr); | |
683 | } | |
684 | break; | |
685 | } | |
686 | } | |
687 | ||
688 | if (NULL == file_handler_table[type_idx].type) { | |
689 | fprintf(stderr, "unknown file type line %d: '%s'\n", | |
690 | line_nr, line); | |
691 | } | |
692 | } | |
aa1e816f JJ |
693 | if (ec == 0) |
694 | cpio_trailer(); | |
1da177e4 LT |
695 | |
696 | exit(ec); | |
697 | } |