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[thirdparty/e2fsprogs.git] / e2fsck / unix.c
1 /*
2 * unix.c - The unix-specific code for e2fsck
3 *
4 * Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o.
5 *
6 * %Begin-Header%
7 * This file may be redistributed under the terms of the GNU Public
8 * License.
9 * %End-Header%
10 */
11
12 #define _XOPEN_SOURCE 600 /* for inclusion of sa_handler in Solaris */
13
14 #include "config.h"
15 #include <stdio.h>
16 #ifdef HAVE_STDLIB_H
17 #include <stdlib.h>
18 #endif
19 #include <string.h>
20 #include <fcntl.h>
21 #include <ctype.h>
22 #include <time.h>
23 #ifdef HAVE_SIGNAL_H
24 #include <signal.h>
25 #endif
26 #ifdef HAVE_GETOPT_H
27 #include <getopt.h>
28 #else
29 extern char *optarg;
30 extern int optind;
31 #endif
32 #include <unistd.h>
33 #ifdef HAVE_ERRNO_H
34 #include <errno.h>
35 #endif
36 #ifdef HAVE_SYS_IOCTL_H
37 #include <sys/ioctl.h>
38 #endif
39 #ifdef HAVE_MALLOC_H
40 #include <malloc.h>
41 #endif
42 #ifdef HAVE_SYS_TYPES_H
43 #include <sys/types.h>
44 #endif
45 #ifdef HAVE_DIRENT_H
46 #include <dirent.h>
47 #endif
48
49 #include "e2p/e2p.h"
50 #include "et/com_err.h"
51 #include "e2p/e2p.h"
52 #include "e2fsck.h"
53 #include "problem.h"
54 #include "../version.h"
55
56 /* Command line options */
57 static int cflag; /* check disk */
58 static int show_version_only;
59 static int verbose;
60
61 static int replace_bad_blocks;
62 static int keep_bad_blocks;
63 static char *bad_blocks_file;
64
65 e2fsck_t e2fsck_global_ctx; /* Try your very best not to use this! */
66
67 #ifdef CONFIG_JBD_DEBUG /* Enabled by configure --enable-jfs-debug */
68 int journal_enable_debug = -1;
69 #endif
70
71 static void usage(e2fsck_t ctx)
72 {
73 fprintf(stderr,
74 _("Usage: %s [-panyrcdfvtDFV] [-b superblock] [-B blocksize]\n"
75 "\t\t[-I inode_buffer_blocks] [-P process_inode_size]\n"
76 "\t\t[-l|-L bad_blocks_file] [-C fd] [-j external_journal]\n"
77 "\t\t[-E extended-options] device\n"),
78 ctx->program_name);
79
80 fprintf(stderr, _("\nEmergency help:\n"
81 " -p Automatic repair (no questions)\n"
82 " -n Make no changes to the filesystem\n"
83 " -y Assume \"yes\" to all questions\n"
84 " -c Check for bad blocks and add them to the badblock list\n"
85 " -f Force checking even if filesystem is marked clean\n"));
86 fprintf(stderr, _(""
87 " -v Be verbose\n"
88 " -b superblock Use alternative superblock\n"
89 " -B blocksize Force blocksize when looking for superblock\n"
90 " -j external_journal Set location of the external journal\n"
91 " -l bad_blocks_file Add to badblocks list\n"
92 " -L bad_blocks_file Set badblocks list\n"
93 ));
94
95 exit(FSCK_USAGE);
96 }
97
98 static void show_stats(e2fsck_t ctx)
99 {
100 ext2_filsys fs = ctx->fs;
101 ext2_ino_t inodes, inodes_used;
102 blk64_t blocks, blocks_used;
103 unsigned int dir_links;
104 unsigned int num_files, num_links;
105 __u32 *mask, m;
106 int frag_percent_file, frag_percent_dir, frag_percent_total;
107 int i, j, printed = 0;
108
109 dir_links = 2 * ctx->fs_directory_count - 1;
110 num_files = ctx->fs_total_count - dir_links;
111 num_links = ctx->fs_links_count - dir_links;
112 inodes = fs->super->s_inodes_count;
113 inodes_used = (fs->super->s_inodes_count -
114 fs->super->s_free_inodes_count);
115 blocks = ext2fs_blocks_count(fs->super);
116 blocks_used = (ext2fs_blocks_count(fs->super) -
117 ext2fs_free_blocks_count(fs->super));
118
119 frag_percent_file = (10000 * ctx->fs_fragmented) / inodes_used;
120 frag_percent_file = (frag_percent_file + 5) / 10;
121
122 frag_percent_dir = (10000 * ctx->fs_fragmented_dir) / inodes_used;
123 frag_percent_dir = (frag_percent_dir + 5) / 10;
124
125 frag_percent_total = ((10000 * (ctx->fs_fragmented +
126 ctx->fs_fragmented_dir))
127 / inodes_used);
128 frag_percent_total = (frag_percent_total + 5) / 10;
129
130 if (!verbose) {
131 log_out(ctx, _("%s: %u/%u files (%0d.%d%% non-contiguous), "
132 "%llu/%llu blocks\n"),
133 ctx->device_name, inodes_used, inodes,
134 frag_percent_total / 10, frag_percent_total % 10,
135 blocks_used, blocks);
136 return;
137 }
138 profile_get_boolean(ctx->profile, "options", "report_features", 0, 0,
139 &i);
140 if (verbose && i) {
141 log_out(ctx, "\nFilesystem features:");
142 mask = &ctx->fs->super->s_feature_compat;
143 for (i = 0; i < 3; i++, mask++) {
144 for (j = 0, m = 1; j < 32; j++, m <<= 1) {
145 if (*mask & m) {
146 log_out(ctx, " %s",
147 e2p_feature2string(i, m));
148 printed++;
149 }
150 }
151 }
152 if (printed == 0)
153 log_out(ctx, " (none)");
154 log_out(ctx, "\n");
155 }
156
157 log_out(ctx, P_("\n%12u inode used (%2.2f%%, out of %u)\n",
158 "\n%12u inodes used (%2.2f%%, out of %u)\n",
159 inodes_used), inodes_used,
160 100.0 * inodes_used / inodes, inodes);
161 log_out(ctx, P_("%12u non-contiguous file (%0d.%d%%)\n",
162 "%12u non-contiguous files (%0d.%d%%)\n",
163 ctx->fs_fragmented),
164 ctx->fs_fragmented, frag_percent_file / 10,
165 frag_percent_file % 10);
166 log_out(ctx, P_("%12u non-contiguous directory (%0d.%d%%)\n",
167 "%12u non-contiguous directories (%0d.%d%%)\n",
168 ctx->fs_fragmented_dir),
169 ctx->fs_fragmented_dir, frag_percent_dir / 10,
170 frag_percent_dir % 10);
171 log_out(ctx, _(" # of inodes with ind/dind/tind blocks: "
172 "%u/%u/%u\n"),
173 ctx->fs_ind_count, ctx->fs_dind_count, ctx->fs_tind_count);
174
175 for (j=MAX_EXTENT_DEPTH_COUNT-1; j >=0; j--)
176 if (ctx->extent_depth_count[j])
177 break;
178 if (++j) {
179 log_out(ctx, _(" Extent depth histogram: "));
180 for (i=0; i < j; i++) {
181 if (i)
182 fputc('/', stdout);
183 log_out(ctx, "%u", ctx->extent_depth_count[i]);
184 }
185 log_out(ctx, "\n");
186 }
187
188 log_out(ctx, P_("%12llu block used (%2.2f%%, out of %llu)\n",
189 "%12llu blocks used (%2.2f%%, out of %llu)\n",
190 blocks_used),
191 blocks_used, 100.0 * blocks_used / blocks, blocks);
192 log_out(ctx, P_("%12u bad block\n", "%12u bad blocks\n",
193 ctx->fs_badblocks_count), ctx->fs_badblocks_count);
194 log_out(ctx, P_("%12u large file\n", "%12u large files\n",
195 ctx->large_files), ctx->large_files);
196 log_out(ctx, P_("\n%12u regular file\n", "\n%12u regular files\n",
197 ctx->fs_regular_count), ctx->fs_regular_count);
198 log_out(ctx, P_("%12u directory\n", "%12u directories\n",
199 ctx->fs_directory_count), ctx->fs_directory_count);
200 log_out(ctx, P_("%12u character device file\n",
201 "%12u character device files\n", ctx->fs_chardev_count),
202 ctx->fs_chardev_count);
203 log_out(ctx, P_("%12u block device file\n", "%12u block device files\n",
204 ctx->fs_blockdev_count), ctx->fs_blockdev_count);
205 log_out(ctx, P_("%12u fifo\n", "%12u fifos\n", ctx->fs_fifo_count),
206 ctx->fs_fifo_count);
207 log_out(ctx, P_("%12u link\n", "%12u links\n", num_links),
208 ctx->fs_links_count - dir_links);
209 log_out(ctx, P_("%12u symbolic link", "%12u symbolic links",
210 ctx->fs_symlinks_count), ctx->fs_symlinks_count);
211 log_out(ctx, P_(" (%u fast symbolic link)\n",
212 " (%u fast symbolic links)\n",
213 ctx->fs_fast_symlinks_count),
214 ctx->fs_fast_symlinks_count);
215 log_out(ctx, P_("%12u socket\n", "%12u sockets\n",
216 ctx->fs_sockets_count),
217 ctx->fs_sockets_count);
218 log_out(ctx, "------------\n");
219 log_out(ctx, P_("%12u file\n", "%12u files\n", num_files),
220 num_files);
221 }
222
223 static void check_mount(e2fsck_t ctx)
224 {
225 errcode_t retval;
226 int cont;
227
228 retval = ext2fs_check_if_mounted(ctx->filesystem_name,
229 &ctx->mount_flags);
230 if (retval) {
231 com_err("ext2fs_check_if_mount", retval,
232 _("while determining whether %s is mounted."),
233 ctx->filesystem_name);
234 return;
235 }
236
237 /*
238 * If the filesystem isn't mounted, or it's the root
239 * filesystem and it's mounted read-only, and we're not doing
240 * a read/write check, then everything's fine.
241 */
242 if ((!(ctx->mount_flags & (EXT2_MF_MOUNTED | EXT2_MF_BUSY))) ||
243 ((ctx->mount_flags & EXT2_MF_ISROOT) &&
244 (ctx->mount_flags & EXT2_MF_READONLY) &&
245 !(ctx->options & E2F_OPT_WRITECHECK)))
246 return;
247
248 if (((ctx->options & E2F_OPT_READONLY) ||
249 ((ctx->options & E2F_OPT_FORCE) &&
250 (ctx->mount_flags & EXT2_MF_READONLY))) &&
251 !(ctx->options & E2F_OPT_WRITECHECK)) {
252 log_out(ctx, _("Warning! %s is %s.\n"),
253 ctx->filesystem_name,
254 ctx->mount_flags & EXT2_MF_MOUNTED ?
255 "mounted" : "in use");
256 return;
257 }
258
259 log_out(ctx, _("%s is %s.\n"), ctx->filesystem_name,
260 ctx->mount_flags & EXT2_MF_MOUNTED ? "mounted" : "in use");
261 if (!ctx->interactive || ctx->mount_flags & EXT2_MF_BUSY)
262 fatal_error(ctx, _("Cannot continue, aborting.\n\n"));
263 puts("\007\007\007\007");
264 log_out(ctx, _("\n\nWARNING!!! "
265 "The filesystem is mounted. "
266 "If you continue you ***WILL***\n"
267 "cause ***SEVERE*** filesystem damage.\n\n"));
268 puts("\007\007\007");
269 cont = ask_yn(ctx, _("Do you really want to continue"), 0);
270 if (!cont) {
271 printf (_("check aborted.\n"));
272 exit (0);
273 }
274 return;
275 }
276
277 static int is_on_batt(void)
278 {
279 FILE *f;
280 DIR *d;
281 char tmp[80], tmp2[80], fname[80];
282 unsigned int acflag;
283 struct dirent* de;
284
285 f = fopen("/sys/class/power_supply/AC/online", "r");
286 if (f) {
287 if (fscanf(f, "%u\n", &acflag) == 1) {
288 fclose(f);
289 return (!acflag);
290 }
291 fclose(f);
292 }
293 f = fopen("/proc/apm", "r");
294 if (f) {
295 if (fscanf(f, "%s %s %s %x", tmp, tmp, tmp, &acflag) != 4)
296 acflag = 1;
297 fclose(f);
298 return (acflag != 1);
299 }
300 d = opendir("/proc/acpi/ac_adapter");
301 if (d) {
302 while ((de=readdir(d)) != NULL) {
303 if (!strncmp(".", de->d_name, 1))
304 continue;
305 snprintf(fname, 80, "/proc/acpi/ac_adapter/%s/state",
306 de->d_name);
307 f = fopen(fname, "r");
308 if (!f)
309 continue;
310 if (fscanf(f, "%s %s", tmp2, tmp) != 2)
311 tmp[0] = 0;
312 fclose(f);
313 if (strncmp(tmp, "off-line", 8) == 0) {
314 closedir(d);
315 return 1;
316 }
317 }
318 closedir(d);
319 }
320 return 0;
321 }
322
323 /*
324 * This routine checks to see if a filesystem can be skipped; if so,
325 * it will exit with E2FSCK_OK. Under some conditions it will print a
326 * message explaining why a check is being forced.
327 */
328 static void check_if_skip(e2fsck_t ctx)
329 {
330 ext2_filsys fs = ctx->fs;
331 struct problem_context pctx;
332 const char *reason = NULL;
333 unsigned int reason_arg = 0;
334 long next_check;
335 int batt = is_on_batt();
336 int defer_check_on_battery;
337 int broken_system_clock;
338 time_t lastcheck;
339
340 profile_get_boolean(ctx->profile, "options", "broken_system_clock",
341 0, 0, &broken_system_clock);
342 if (ctx->flags & E2F_FLAG_TIME_INSANE)
343 broken_system_clock = 1;
344 profile_get_boolean(ctx->profile, "options",
345 "defer_check_on_battery", 0, 1,
346 &defer_check_on_battery);
347 if (!defer_check_on_battery)
348 batt = 0;
349
350 if ((ctx->options & E2F_OPT_FORCE) || bad_blocks_file || cflag)
351 return;
352
353 if (ctx->options & E2F_OPT_JOURNAL_ONLY)
354 goto skip;
355
356 lastcheck = fs->super->s_lastcheck;
357 if (lastcheck > ctx->now)
358 lastcheck -= ctx->time_fudge;
359 if ((fs->super->s_state & EXT2_ERROR_FS) ||
360 !ext2fs_test_valid(fs))
361 reason = _(" contains a file system with errors");
362 else if ((fs->super->s_state & EXT2_VALID_FS) == 0)
363 reason = _(" was not cleanly unmounted");
364 else if (check_backup_super_block(ctx))
365 reason = _(" primary superblock features different from backup");
366 else if ((fs->super->s_max_mnt_count > 0) &&
367 (fs->super->s_mnt_count >=
368 (unsigned) fs->super->s_max_mnt_count)) {
369 reason = _(" has been mounted %u times without being checked");
370 reason_arg = fs->super->s_mnt_count;
371 if (batt && (fs->super->s_mnt_count <
372 (unsigned) fs->super->s_max_mnt_count*2))
373 reason = 0;
374 } else if (!broken_system_clock && fs->super->s_checkinterval &&
375 (ctx->now < lastcheck)) {
376 reason = _(" has filesystem last checked time in the future");
377 if (batt)
378 reason = 0;
379 } else if (!broken_system_clock && fs->super->s_checkinterval &&
380 ((ctx->now - lastcheck) >=
381 ((time_t) fs->super->s_checkinterval))) {
382 reason = _(" has gone %u days without being checked");
383 reason_arg = (ctx->now - fs->super->s_lastcheck)/(3600*24);
384 if (batt && ((ctx->now - fs->super->s_lastcheck) <
385 fs->super->s_checkinterval*2))
386 reason = 0;
387 }
388 if (reason) {
389 log_out(ctx, "%s", ctx->device_name);
390 log_out(ctx, reason, reason_arg);
391 log_out(ctx, _(", check forced.\n"));
392 return;
393 }
394
395 /*
396 * Update the global counts from the block group counts. This
397 * is needed since modern kernels don't update the global
398 * counts so as to avoid locking the entire file system. So
399 * if the filesystem is not unmounted cleanly, the global
400 * counts may not be accurate. Update them here if we can,
401 * for the benefit of users who might examine the file system
402 * using dumpe2fs. (This is for cosmetic reasons only.)
403 */
404 clear_problem_context(&pctx);
405 pctx.ino = fs->super->s_free_inodes_count;
406 pctx.ino2 = ctx->free_inodes;
407 if ((pctx.ino != pctx.ino2) &&
408 !(ctx->options & E2F_OPT_READONLY) &&
409 fix_problem(ctx, PR_0_FREE_INODE_COUNT, &pctx)) {
410 fs->super->s_free_inodes_count = ctx->free_inodes;
411 ext2fs_mark_super_dirty(fs);
412 }
413 clear_problem_context(&pctx);
414 pctx.blk = ext2fs_free_blocks_count(fs->super);
415 pctx.blk2 = ctx->free_blocks;
416 if ((pctx.blk != pctx.blk2) &&
417 !(ctx->options & E2F_OPT_READONLY) &&
418 fix_problem(ctx, PR_0_FREE_BLOCK_COUNT, &pctx)) {
419 ext2fs_free_blocks_count_set(fs->super, ctx->free_blocks);
420 ext2fs_mark_super_dirty(fs);
421 }
422
423 /* Print the summary message when we're skipping a full check */
424 log_out(ctx, _("%s: clean, %u/%u files, %llu/%llu blocks"),
425 ctx->device_name,
426 fs->super->s_inodes_count - fs->super->s_free_inodes_count,
427 fs->super->s_inodes_count,
428 ext2fs_blocks_count(fs->super) -
429 ext2fs_free_blocks_count(fs->super),
430 ext2fs_blocks_count(fs->super));
431 next_check = 100000;
432 if (fs->super->s_max_mnt_count > 0) {
433 next_check = fs->super->s_max_mnt_count - fs->super->s_mnt_count;
434 if (next_check <= 0)
435 next_check = 1;
436 }
437 if (!broken_system_clock && fs->super->s_checkinterval &&
438 ((ctx->now - fs->super->s_lastcheck) >= fs->super->s_checkinterval))
439 next_check = 1;
440 if (next_check <= 5) {
441 if (next_check == 1) {
442 if (batt)
443 log_out(ctx, _(" (check deferred; "
444 "on battery)"));
445 else
446 log_out(ctx, _(" (check after next mount)"));
447 } else
448 log_out(ctx, _(" (check in %ld mounts)"), next_check);
449 }
450 log_out(ctx, "\n");
451 skip:
452 ext2fs_close(fs);
453 ctx->fs = NULL;
454 e2fsck_free_context(ctx);
455 exit(FSCK_OK);
456 }
457
458 /*
459 * For completion notice
460 */
461 struct percent_tbl {
462 int max_pass;
463 int table[32];
464 };
465 struct percent_tbl e2fsck_tbl = {
466 5, { 0, 70, 90, 92, 95, 100 }
467 };
468 static char bar[128], spaces[128];
469
470 static float calc_percent(struct percent_tbl *tbl, int pass, int curr,
471 int max)
472 {
473 float percent;
474
475 if (pass <= 0)
476 return 0.0;
477 if (pass > tbl->max_pass || max == 0)
478 return 100.0;
479 percent = ((float) curr) / ((float) max);
480 return ((percent * (tbl->table[pass] - tbl->table[pass-1]))
481 + tbl->table[pass-1]);
482 }
483
484 extern void e2fsck_clear_progbar(e2fsck_t ctx)
485 {
486 if (!(ctx->flags & E2F_FLAG_PROG_BAR))
487 return;
488
489 printf("%s%s\r%s", ctx->start_meta, spaces + (sizeof(spaces) - 80),
490 ctx->stop_meta);
491 fflush(stdout);
492 ctx->flags &= ~E2F_FLAG_PROG_BAR;
493 }
494
495 int e2fsck_simple_progress(e2fsck_t ctx, const char *label, float percent,
496 unsigned int dpynum)
497 {
498 static const char spinner[] = "\\|/-";
499 int i;
500 unsigned int tick;
501 struct timeval tv;
502 int dpywidth;
503 int fixed_percent;
504
505 if (ctx->flags & E2F_FLAG_PROG_SUPPRESS)
506 return 0;
507
508 /*
509 * Calculate the new progress position. If the
510 * percentage hasn't changed, then we skip out right
511 * away.
512 */
513 fixed_percent = (int) ((10 * percent) + 0.5);
514 if (ctx->progress_last_percent == fixed_percent)
515 return 0;
516 ctx->progress_last_percent = fixed_percent;
517
518 /*
519 * If we've already updated the spinner once within
520 * the last 1/8th of a second, no point doing it
521 * again.
522 */
523 gettimeofday(&tv, NULL);
524 tick = (tv.tv_sec << 3) + (tv.tv_usec / (1000000 / 8));
525 if ((tick == ctx->progress_last_time) &&
526 (fixed_percent != 0) && (fixed_percent != 1000))
527 return 0;
528 ctx->progress_last_time = tick;
529
530 /*
531 * Advance the spinner, and note that the progress bar
532 * will be on the screen
533 */
534 ctx->progress_pos = (ctx->progress_pos+1) & 3;
535 ctx->flags |= E2F_FLAG_PROG_BAR;
536
537 dpywidth = 66 - strlen(label);
538 dpywidth = 8 * (dpywidth / 8);
539 if (dpynum)
540 dpywidth -= 8;
541
542 i = ((percent * dpywidth) + 50) / 100;
543 printf("%s%s: |%s%s", ctx->start_meta, label,
544 bar + (sizeof(bar) - (i+1)),
545 spaces + (sizeof(spaces) - (dpywidth - i + 1)));
546 if (fixed_percent == 1000)
547 fputc('|', stdout);
548 else
549 fputc(spinner[ctx->progress_pos & 3], stdout);
550 printf(" %4.1f%% ", percent);
551 if (dpynum)
552 printf("%u\r", dpynum);
553 else
554 fputs(" \r", stdout);
555 fputs(ctx->stop_meta, stdout);
556
557 if (fixed_percent == 1000)
558 e2fsck_clear_progbar(ctx);
559 fflush(stdout);
560
561 return 0;
562 }
563
564 static int e2fsck_update_progress(e2fsck_t ctx, int pass,
565 unsigned long cur, unsigned long max)
566 {
567 char buf[1024];
568 float percent;
569
570 if (pass == 0)
571 return 0;
572
573 if (ctx->progress_fd) {
574 snprintf(buf, sizeof(buf), "%d %lu %lu %s\n",
575 pass, cur, max, ctx->device_name);
576 write_all(ctx->progress_fd, buf, strlen(buf));
577 } else {
578 percent = calc_percent(&e2fsck_tbl, pass, cur, max);
579 e2fsck_simple_progress(ctx, ctx->device_name,
580 percent, 0);
581 }
582 return 0;
583 }
584
585 #define PATH_SET "PATH=/sbin"
586
587 /*
588 * Make sure 0,1,2 file descriptors are open, so that we don't open
589 * the filesystem using the same file descriptor as stdout or stderr.
590 */
591 static void reserve_stdio_fds(void)
592 {
593 int fd = 0;
594
595 while (fd <= 2) {
596 fd = open("/dev/null", O_RDWR);
597 if (fd < 0) {
598 fprintf(stderr, _("ERROR: Couldn't open "
599 "/dev/null (%s)\n"),
600 strerror(errno));
601 break;
602 }
603 }
604 }
605
606 #ifdef HAVE_SIGNAL_H
607 static void signal_progress_on(int sig EXT2FS_ATTR((unused)))
608 {
609 e2fsck_t ctx = e2fsck_global_ctx;
610
611 if (!ctx)
612 return;
613
614 ctx->progress = e2fsck_update_progress;
615 }
616
617 static void signal_progress_off(int sig EXT2FS_ATTR((unused)))
618 {
619 e2fsck_t ctx = e2fsck_global_ctx;
620
621 if (!ctx)
622 return;
623
624 e2fsck_clear_progbar(ctx);
625 ctx->progress = 0;
626 }
627
628 static void signal_cancel(int sig EXT2FS_ATTR((unused)))
629 {
630 e2fsck_t ctx = e2fsck_global_ctx;
631
632 if (!ctx)
633 exit(FSCK_CANCELED);
634
635 ctx->flags |= E2F_FLAG_CANCEL;
636 }
637 #endif
638
639 static void parse_extended_opts(e2fsck_t ctx, const char *opts)
640 {
641 char *buf, *token, *next, *p, *arg;
642 int ea_ver;
643 int extended_usage = 0;
644
645 buf = string_copy(ctx, opts, 0);
646 for (token = buf; token && *token; token = next) {
647 p = strchr(token, ',');
648 next = 0;
649 if (p) {
650 *p = 0;
651 next = p+1;
652 }
653 arg = strchr(token, '=');
654 if (arg) {
655 *arg = 0;
656 arg++;
657 }
658 if (strcmp(token, "ea_ver") == 0) {
659 if (!arg) {
660 extended_usage++;
661 continue;
662 }
663 ea_ver = strtoul(arg, &p, 0);
664 if (*p ||
665 ((ea_ver != 1) && (ea_ver != 2))) {
666 fprintf(stderr,
667 _("Invalid EA version.\n"));
668 extended_usage++;
669 continue;
670 }
671 ctx->ext_attr_ver = ea_ver;
672 } else if (strcmp(token, "fragcheck") == 0) {
673 ctx->options |= E2F_OPT_FRAGCHECK;
674 continue;
675 } else if (strcmp(token, "journal_only") == 0) {
676 if (arg) {
677 extended_usage++;
678 continue;
679 }
680 ctx->options |= E2F_OPT_JOURNAL_ONLY;
681 } else if (strcmp(token, "discard") == 0) {
682 ctx->options |= E2F_OPT_DISCARD;
683 continue;
684 } else if (strcmp(token, "nodiscard") == 0) {
685 ctx->options &= ~E2F_OPT_DISCARD;
686 continue;
687 } else if (strcmp(token, "log_filename") == 0) {
688 if (!arg)
689 extended_usage++;
690 else
691 ctx->log_fn = string_copy(ctx, arg, 0);
692 continue;
693 } else {
694 fprintf(stderr, _("Unknown extended option: %s\n"),
695 token);
696 extended_usage++;
697 }
698 }
699 free(buf);
700
701 if (extended_usage) {
702 fputs(("\nExtended options are separated by commas, "
703 "and may take an argument which\n"
704 "is set off by an equals ('=') sign. "
705 "Valid extended options are:\n"), stderr);
706 fputs(("\tea_ver=<ea_version (1 or 2)>\n"), stderr);
707 fputs(("\tfragcheck\n"), stderr);
708 fputs(("\tjournal_only\n"), stderr);
709 fputs(("\tdiscard\n"), stderr);
710 fputs(("\tnodiscard\n"), stderr);
711 fputc('\n', stderr);
712 exit(1);
713 }
714 }
715
716 static void syntax_err_report(const char *filename, long err, int line_num)
717 {
718 fprintf(stderr,
719 _("Syntax error in e2fsck config file (%s, line #%d)\n\t%s\n"),
720 filename, line_num, error_message(err));
721 exit(FSCK_ERROR);
722 }
723
724 static const char *config_fn[] = { ROOT_SYSCONFDIR "/e2fsck.conf", 0 };
725
726 static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx)
727 {
728 int flush = 0;
729 int c, fd;
730 #ifdef MTRACE
731 extern void *mallwatch;
732 #endif
733 e2fsck_t ctx;
734 errcode_t retval;
735 #ifdef HAVE_SIGNAL_H
736 struct sigaction sa;
737 #endif
738 char *extended_opts = 0;
739 char *cp;
740 int res; /* result of sscanf */
741 #ifdef CONFIG_JBD_DEBUG
742 char *jbd_debug;
743 #endif
744
745 retval = e2fsck_allocate_context(&ctx);
746 if (retval)
747 return retval;
748
749 *ret_ctx = ctx;
750
751 setvbuf(stdout, NULL, _IONBF, BUFSIZ);
752 setvbuf(stderr, NULL, _IONBF, BUFSIZ);
753 if (isatty(0) && isatty(1)) {
754 ctx->interactive = 1;
755 } else {
756 ctx->start_meta[0] = '\001';
757 ctx->stop_meta[0] = '\002';
758 }
759 memset(bar, '=', sizeof(bar)-1);
760 memset(spaces, ' ', sizeof(spaces)-1);
761 add_error_table(&et_ext2_error_table);
762 add_error_table(&et_prof_error_table);
763 blkid_get_cache(&ctx->blkid, NULL);
764
765 if (argc && *argv)
766 ctx->program_name = *argv;
767 else
768 ctx->program_name = "e2fsck";
769
770 while ((c = getopt (argc, argv, "panyrcC:B:dE:fvtFVM:b:I:j:P:l:L:N:SsDk")) != EOF)
771 switch (c) {
772 case 'C':
773 ctx->progress = e2fsck_update_progress;
774 res = sscanf(optarg, "%d", &ctx->progress_fd);
775 if (res != 1)
776 goto sscanf_err;
777
778 if (ctx->progress_fd < 0) {
779 ctx->progress = 0;
780 ctx->progress_fd = ctx->progress_fd * -1;
781 }
782 if (!ctx->progress_fd)
783 break;
784 /* Validate the file descriptor to avoid disasters */
785 fd = dup(ctx->progress_fd);
786 if (fd < 0) {
787 fprintf(stderr,
788 _("Error validating file descriptor %d: %s\n"),
789 ctx->progress_fd,
790 error_message(errno));
791 fatal_error(ctx,
792 _("Invalid completion information file descriptor"));
793 } else
794 close(fd);
795 break;
796 case 'D':
797 ctx->options |= E2F_OPT_COMPRESS_DIRS;
798 break;
799 case 'E':
800 extended_opts = optarg;
801 break;
802 case 'p':
803 case 'a':
804 if (ctx->options & (E2F_OPT_YES|E2F_OPT_NO)) {
805 conflict_opt:
806 fatal_error(ctx,
807 _("Only one of the options -p/-a, -n or -y may be specified."));
808 }
809 ctx->options |= E2F_OPT_PREEN;
810 break;
811 case 'n':
812 if (ctx->options & (E2F_OPT_YES|E2F_OPT_PREEN))
813 goto conflict_opt;
814 ctx->options |= E2F_OPT_NO;
815 break;
816 case 'y':
817 if (ctx->options & (E2F_OPT_PREEN|E2F_OPT_NO))
818 goto conflict_opt;
819 ctx->options |= E2F_OPT_YES;
820 break;
821 case 't':
822 #ifdef RESOURCE_TRACK
823 if (ctx->options & E2F_OPT_TIME)
824 ctx->options |= E2F_OPT_TIME2;
825 else
826 ctx->options |= E2F_OPT_TIME;
827 #else
828 fprintf(stderr, _("The -t option is not "
829 "supported on this version of e2fsck.\n"));
830 #endif
831 break;
832 case 'c':
833 if (cflag++)
834 ctx->options |= E2F_OPT_WRITECHECK;
835 ctx->options |= E2F_OPT_CHECKBLOCKS;
836 break;
837 case 'r':
838 /* What we do by default, anyway! */
839 break;
840 case 'b':
841 res = sscanf(optarg, "%llu", &ctx->use_superblock);
842 if (res != 1)
843 goto sscanf_err;
844 ctx->flags |= E2F_FLAG_SB_SPECIFIED;
845 break;
846 case 'B':
847 ctx->blocksize = atoi(optarg);
848 break;
849 case 'I':
850 res = sscanf(optarg, "%d", &ctx->inode_buffer_blocks);
851 if (res != 1)
852 goto sscanf_err;
853 break;
854 case 'j':
855 ctx->journal_name = blkid_get_devname(ctx->blkid,
856 optarg, NULL);
857 if (!ctx->journal_name) {
858 com_err(ctx->program_name, 0,
859 _("Unable to resolve '%s'"),
860 optarg);
861 fatal_error(ctx, 0);
862 }
863 break;
864 case 'P':
865 res = sscanf(optarg, "%d", &ctx->process_inode_size);
866 if (res != 1)
867 goto sscanf_err;
868 break;
869 case 'L':
870 replace_bad_blocks++;
871 case 'l':
872 if (bad_blocks_file)
873 free(bad_blocks_file);
874 bad_blocks_file = string_copy(ctx, optarg, 0);
875 break;
876 case 'd':
877 ctx->options |= E2F_OPT_DEBUG;
878 break;
879 case 'f':
880 ctx->options |= E2F_OPT_FORCE;
881 break;
882 case 'F':
883 flush = 1;
884 break;
885 case 'v':
886 verbose = 1;
887 break;
888 case 'V':
889 show_version_only = 1;
890 break;
891 #ifdef MTRACE
892 case 'M':
893 mallwatch = (void *) strtol(optarg, NULL, 0);
894 break;
895 #endif
896 case 'N':
897 ctx->device_name = string_copy(ctx, optarg, 0);
898 break;
899 case 'k':
900 keep_bad_blocks++;
901 break;
902 default:
903 usage(ctx);
904 }
905 if (show_version_only)
906 return 0;
907 if (optind != argc - 1)
908 usage(ctx);
909 if ((ctx->options & E2F_OPT_NO) &&
910 (ctx->options & E2F_OPT_COMPRESS_DIRS)) {
911 com_err(ctx->program_name, 0,
912 _("The -n and -D options are incompatible."));
913 fatal_error(ctx, 0);
914 }
915 if ((ctx->options & E2F_OPT_NO) && cflag) {
916 com_err(ctx->program_name, 0,
917 _("The -n and -c options are incompatible."));
918 fatal_error(ctx, 0);
919 }
920 if ((ctx->options & E2F_OPT_NO) && bad_blocks_file) {
921 com_err(ctx->program_name, 0,
922 _("The -n and -l/-L options are incompatible."));
923 fatal_error(ctx, 0);
924 }
925 if (ctx->options & E2F_OPT_NO)
926 ctx->options |= E2F_OPT_READONLY;
927
928 ctx->io_options = strchr(argv[optind], '?');
929 if (ctx->io_options)
930 *ctx->io_options++ = 0;
931 ctx->filesystem_name = blkid_get_devname(ctx->blkid, argv[optind], 0);
932 if (!ctx->filesystem_name) {
933 com_err(ctx->program_name, 0, _("Unable to resolve '%s'"),
934 argv[optind]);
935 fatal_error(ctx, 0);
936 }
937 if (extended_opts)
938 parse_extended_opts(ctx, extended_opts);
939
940 if ((cp = getenv("E2FSCK_CONFIG")) != NULL)
941 config_fn[0] = cp;
942 profile_set_syntax_err_cb(syntax_err_report);
943 profile_init(config_fn, &ctx->profile);
944
945 profile_get_boolean(ctx->profile, "options", "report_time", 0, 0,
946 &c);
947 if (c)
948 ctx->options |= E2F_OPT_TIME | E2F_OPT_TIME2;
949 profile_get_boolean(ctx->profile, "options", "report_verbose", 0, 0,
950 &c);
951 if (c)
952 verbose = 1;
953
954 /* Turn off discard in read-only mode */
955 if ((ctx->options & E2F_OPT_NO) &&
956 (ctx->options & E2F_OPT_DISCARD))
957 ctx->options &= ~E2F_OPT_DISCARD;
958
959 if (flush) {
960 fd = open(ctx->filesystem_name, O_RDONLY, 0);
961 if (fd < 0) {
962 com_err("open", errno,
963 _("while opening %s for flushing"),
964 ctx->filesystem_name);
965 fatal_error(ctx, 0);
966 }
967 if ((retval = ext2fs_sync_device(fd, 1))) {
968 com_err("ext2fs_sync_device", retval,
969 _("while trying to flush %s"),
970 ctx->filesystem_name);
971 fatal_error(ctx, 0);
972 }
973 close(fd);
974 }
975 if (cflag && bad_blocks_file) {
976 fprintf(stderr, _("The -c and the -l/-L options may "
977 "not be both used at the same time.\n"));
978 exit(FSCK_USAGE);
979 }
980 #ifdef HAVE_SIGNAL_H
981 /*
982 * Set up signal action
983 */
984 memset(&sa, 0, sizeof(struct sigaction));
985 sa.sa_handler = signal_cancel;
986 sigaction(SIGINT, &sa, 0);
987 sigaction(SIGTERM, &sa, 0);
988 #ifdef SA_RESTART
989 sa.sa_flags = SA_RESTART;
990 #endif
991 e2fsck_global_ctx = ctx;
992 sa.sa_handler = signal_progress_on;
993 sigaction(SIGUSR1, &sa, 0);
994 sa.sa_handler = signal_progress_off;
995 sigaction(SIGUSR2, &sa, 0);
996 #endif
997
998 /* Update our PATH to include /sbin if we need to run badblocks */
999 if (cflag) {
1000 char *oldpath = getenv("PATH");
1001 char *newpath;
1002 int len = sizeof(PATH_SET) + 1;
1003
1004 if (oldpath)
1005 len += strlen(oldpath);
1006
1007 newpath = malloc(len);
1008 if (!newpath)
1009 fatal_error(ctx, "Couldn't malloc() newpath");
1010 strcpy(newpath, PATH_SET);
1011
1012 if (oldpath) {
1013 strcat(newpath, ":");
1014 strcat(newpath, oldpath);
1015 }
1016 putenv(newpath);
1017 }
1018 #ifdef CONFIG_JBD_DEBUG
1019 jbd_debug = getenv("E2FSCK_JBD_DEBUG");
1020 if (jbd_debug) {
1021 res = sscanf(jbd_debug, "%d", &journal_enable_debug);
1022 if (res != 1) {
1023 fprintf(stderr,
1024 _("E2FSCK_JBD_DEBUG \"%s\" not an integer\n\n"),
1025 jbd_debug);
1026 exit (1);
1027 }
1028 }
1029 #endif
1030 return 0;
1031
1032 sscanf_err:
1033 fprintf(stderr, _("\nInvalid non-numeric argument to -%c (\"%s\")\n\n"),
1034 c, optarg);
1035 exit (1);
1036 }
1037
1038 static errcode_t try_open_fs(e2fsck_t ctx, int flags, io_manager io_ptr,
1039 ext2_filsys *ret_fs)
1040 {
1041 errcode_t retval;
1042
1043 *ret_fs = NULL;
1044 if (ctx->superblock && ctx->blocksize) {
1045 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1046 flags, ctx->superblock, ctx->blocksize,
1047 io_ptr, ret_fs);
1048 } else if (ctx->superblock) {
1049 int blocksize;
1050 for (blocksize = EXT2_MIN_BLOCK_SIZE;
1051 blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) {
1052 if (*ret_fs) {
1053 ext2fs_free(*ret_fs);
1054 *ret_fs = NULL;
1055 }
1056 retval = ext2fs_open2(ctx->filesystem_name,
1057 ctx->io_options, flags,
1058 ctx->superblock, blocksize,
1059 io_ptr, ret_fs);
1060 if (!retval)
1061 break;
1062 }
1063 } else
1064 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1065 flags, 0, 0, io_ptr, ret_fs);
1066
1067 if (retval == 0)
1068 e2fsck_set_bitmap_type(*ret_fs, EXT2FS_BMAP64_RBTREE,
1069 "default", NULL);
1070 return retval;
1071 }
1072
1073 static const char *my_ver_string = E2FSPROGS_VERSION;
1074 static const char *my_ver_date = E2FSPROGS_DATE;
1075
1076 static errcode_t e2fsck_check_mmp(ext2_filsys fs, e2fsck_t ctx)
1077 {
1078 struct mmp_struct *mmp_s;
1079 unsigned int mmp_check_interval;
1080 errcode_t retval = 0;
1081 struct problem_context pctx;
1082 unsigned int wait_time = 0;
1083
1084 clear_problem_context(&pctx);
1085 if (fs->mmp_buf == NULL) {
1086 retval = ext2fs_get_mem(fs->blocksize, &fs->mmp_buf);
1087 if (retval)
1088 goto check_error;
1089 }
1090
1091 retval = ext2fs_mmp_read(fs, fs->super->s_mmp_block, fs->mmp_buf);
1092 if (retval)
1093 goto check_error;
1094
1095 mmp_s = fs->mmp_buf;
1096
1097 mmp_check_interval = fs->super->s_mmp_update_interval;
1098 if (mmp_check_interval < EXT4_MMP_MIN_CHECK_INTERVAL)
1099 mmp_check_interval = EXT4_MMP_MIN_CHECK_INTERVAL;
1100
1101 /*
1102 * If check_interval in MMP block is larger, use that instead of
1103 * check_interval from the superblock.
1104 */
1105 if (mmp_s->mmp_check_interval > mmp_check_interval)
1106 mmp_check_interval = mmp_s->mmp_check_interval;
1107
1108 wait_time = mmp_check_interval * 2 + 1;
1109
1110 if (mmp_s->mmp_seq == EXT4_MMP_SEQ_CLEAN)
1111 retval = 0;
1112 else if (mmp_s->mmp_seq == EXT4_MMP_SEQ_FSCK)
1113 retval = EXT2_ET_MMP_FSCK_ON;
1114 else if (mmp_s->mmp_seq > EXT4_MMP_SEQ_MAX)
1115 retval = EXT2_ET_MMP_UNKNOWN_SEQ;
1116
1117 if (retval)
1118 goto check_error;
1119
1120 /* Print warning if e2fck will wait for more than 20 secs. */
1121 if (verbose || wait_time > EXT4_MMP_MIN_CHECK_INTERVAL * 4) {
1122 log_out(ctx, _("MMP interval is %u seconds and total wait "
1123 "time is %u seconds. Please wait...\n"),
1124 mmp_check_interval, wait_time * 2);
1125 }
1126
1127 return 0;
1128
1129 check_error:
1130
1131 if (retval == EXT2_ET_MMP_BAD_BLOCK) {
1132 if (fix_problem(ctx, PR_0_MMP_INVALID_BLK, &pctx)) {
1133 fs->super->s_mmp_block = 0;
1134 ext2fs_mark_super_dirty(fs);
1135 retval = 0;
1136 }
1137 } else if (retval == EXT2_ET_MMP_FAILED) {
1138 com_err(ctx->program_name, retval,
1139 _("while checking MMP block"));
1140 dump_mmp_msg(fs->mmp_buf, NULL);
1141 } else if (retval == EXT2_ET_MMP_FSCK_ON ||
1142 retval == EXT2_ET_MMP_UNKNOWN_SEQ) {
1143 com_err(ctx->program_name, retval,
1144 _("while checking MMP block"));
1145 dump_mmp_msg(fs->mmp_buf,
1146 _("If you are sure the filesystem is not "
1147 "in use on any node, run:\n"
1148 "'tune2fs -f -E clear_mmp {device}'\n"));
1149 } else if (retval == EXT2_ET_MMP_MAGIC_INVALID) {
1150 if (fix_problem(ctx, PR_0_MMP_INVALID_MAGIC, &pctx)) {
1151 ext2fs_mmp_clear(fs);
1152 retval = 0;
1153 }
1154 } else if (retval == EXT2_ET_MMP_CSUM_INVALID) {
1155 if (fix_problem(ctx, PR_0_MMP_CSUM_INVALID, &pctx)) {
1156 ext2fs_mmp_clear(fs);
1157 retval = 0;
1158 }
1159 }
1160 return retval;
1161 }
1162
1163 int main (int argc, char *argv[])
1164 {
1165 errcode_t retval = 0, retval2 = 0, orig_retval = 0;
1166 int exit_value = FSCK_OK;
1167 ext2_filsys fs = 0;
1168 io_manager io_ptr;
1169 struct ext2_super_block *sb;
1170 const char *lib_ver_date;
1171 int my_ver, lib_ver;
1172 e2fsck_t ctx;
1173 blk64_t orig_superblock;
1174 struct problem_context pctx;
1175 int flags, run_result;
1176 int journal_size;
1177 int sysval, sys_page_size = 4096;
1178 int old_bitmaps;
1179 __u32 features[3];
1180 char *cp;
1181 int qtype = -99; /* quota type */
1182
1183 clear_problem_context(&pctx);
1184 sigcatcher_setup();
1185 #ifdef MTRACE
1186 mtrace();
1187 #endif
1188 #ifdef MCHECK
1189 mcheck(0);
1190 #endif
1191 #ifdef ENABLE_NLS
1192 setlocale(LC_MESSAGES, "");
1193 setlocale(LC_CTYPE, "");
1194 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1195 textdomain(NLS_CAT_NAME);
1196 set_com_err_gettext(gettext);
1197 #endif
1198 my_ver = ext2fs_parse_version_string(my_ver_string);
1199 lib_ver = ext2fs_get_library_version(0, &lib_ver_date);
1200 if (my_ver > lib_ver) {
1201 fprintf( stderr, _("Error: ext2fs library version "
1202 "out of date!\n"));
1203 show_version_only++;
1204 }
1205
1206 retval = PRS(argc, argv, &ctx);
1207 if (retval) {
1208 com_err("e2fsck", retval,
1209 _("while trying to initialize program"));
1210 exit(FSCK_ERROR);
1211 }
1212 reserve_stdio_fds();
1213
1214 set_up_logging(ctx);
1215 if (ctx->logf) {
1216 int i;
1217 fputs("E2fsck run: ", ctx->logf);
1218 for (i = 0; i < argc; i++) {
1219 if (i)
1220 fputc(' ', ctx->logf);
1221 fputs(argv[i], ctx->logf);
1222 }
1223 fputc('\n', ctx->logf);
1224 }
1225
1226 init_resource_track(&ctx->global_rtrack, NULL);
1227 if (!(ctx->options & E2F_OPT_PREEN) || show_version_only)
1228 log_err(ctx, "e2fsck %s (%s)\n", my_ver_string,
1229 my_ver_date);
1230
1231 if (show_version_only) {
1232 log_err(ctx, _("\tUsing %s, %s\n"),
1233 error_message(EXT2_ET_BASE), lib_ver_date);
1234 exit(FSCK_OK);
1235 }
1236
1237 check_mount(ctx);
1238
1239 if (!(ctx->options & E2F_OPT_PREEN) &&
1240 !(ctx->options & E2F_OPT_NO) &&
1241 !(ctx->options & E2F_OPT_YES)) {
1242 if (!ctx->interactive)
1243 fatal_error(ctx,
1244 _("need terminal for interactive repairs"));
1245 }
1246 ctx->superblock = ctx->use_superblock;
1247
1248 flags = EXT2_FLAG_SKIP_MMP;
1249 restart:
1250 #ifdef CONFIG_TESTIO_DEBUG
1251 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1252 io_ptr = test_io_manager;
1253 test_io_backing_manager = unix_io_manager;
1254 } else
1255 #endif
1256 io_ptr = unix_io_manager;
1257 flags |= EXT2_FLAG_NOFREE_ON_ERROR;
1258 profile_get_boolean(ctx->profile, "options", "old_bitmaps", 0, 0,
1259 &old_bitmaps);
1260 if (!old_bitmaps)
1261 flags |= EXT2_FLAG_64BITS;
1262 if ((ctx->options & E2F_OPT_READONLY) == 0) {
1263 flags |= EXT2_FLAG_RW;
1264 if (!(ctx->mount_flags & EXT2_MF_ISROOT &&
1265 ctx->mount_flags & EXT2_MF_READONLY))
1266 flags |= EXT2_FLAG_EXCLUSIVE;
1267 if ((ctx->mount_flags & EXT2_MF_READONLY) &&
1268 (ctx->options & E2F_OPT_FORCE))
1269 flags &= ~EXT2_FLAG_EXCLUSIVE;
1270 }
1271
1272 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1273
1274 if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) &&
1275 !(ctx->flags & E2F_FLAG_SB_SPECIFIED) &&
1276 ((retval == EXT2_ET_BAD_MAGIC) ||
1277 (retval == EXT2_ET_SB_CSUM_INVALID) ||
1278 (retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
1279 ((retval == 0) && (retval2 = ext2fs_check_desc(fs))))) {
1280 if (retval) {
1281 pctx.errcode = retval;
1282 fix_problem(ctx, PR_0_OPEN_FAILED, &pctx);
1283 }
1284 if (retval2) {
1285 pctx.errcode = retval2;
1286 fix_problem(ctx, PR_0_CHECK_DESC_FAILED, &pctx);
1287 }
1288 pctx.errcode = 0;
1289 if (retval2 == ENOMEM || retval2 == EXT2_ET_NO_MEMORY) {
1290 retval = retval2;
1291 goto failure;
1292 }
1293 if (fs->flags & EXT2_FLAG_NOFREE_ON_ERROR) {
1294 ext2fs_free(fs);
1295 fs = NULL;
1296 }
1297 if (!fs || (fs->group_desc_count > 1)) {
1298 log_out(ctx, _("%s: %s trying backup blocks...\n"),
1299 ctx->program_name,
1300 retval ? _("Superblock invalid,") :
1301 _("Group descriptors look bad..."));
1302 orig_superblock = ctx->superblock;
1303 get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr);
1304 if (fs)
1305 ext2fs_close(fs);
1306 orig_retval = retval;
1307 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1308 if ((orig_retval == 0) && retval != 0) {
1309 if (fs)
1310 ext2fs_close(fs);
1311 log_out(ctx, _("%s: %s while using the "
1312 "backup blocks"),
1313 ctx->program_name,
1314 error_message(retval));
1315 log_out(ctx, _("%s: going back to original "
1316 "superblock\n"),
1317 ctx->program_name);
1318 ctx->superblock = orig_superblock;
1319 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1320 }
1321 }
1322 }
1323 if (((retval == EXT2_ET_UNSUPP_FEATURE) ||
1324 (retval == EXT2_ET_RO_UNSUPP_FEATURE)) &&
1325 fs && fs->super) {
1326 sb = fs->super;
1327 features[0] = (sb->s_feature_compat &
1328 ~EXT2_LIB_FEATURE_COMPAT_SUPP);
1329 features[1] = (sb->s_feature_incompat &
1330 ~EXT2_LIB_FEATURE_INCOMPAT_SUPP);
1331 features[2] = (sb->s_feature_ro_compat &
1332 ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1333 if (features[0] || features[1] || features[2])
1334 goto print_unsupp_features;
1335 }
1336 failure:
1337 if (retval) {
1338 if (orig_retval)
1339 retval = orig_retval;
1340 com_err(ctx->program_name, retval, _("while trying to open %s"),
1341 ctx->filesystem_name);
1342 if (retval == EXT2_ET_REV_TOO_HIGH) {
1343 log_out(ctx, _("The filesystem revision is apparently "
1344 "too high for this version of e2fsck.\n"
1345 "(Or the filesystem superblock "
1346 "is corrupt)\n\n"));
1347 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1348 } else if (retval == EXT2_ET_SHORT_READ)
1349 log_out(ctx, _("Could this be a zero-length "
1350 "partition?\n"));
1351 else if ((retval == EPERM) || (retval == EACCES))
1352 log_out(ctx, _("You must have %s access to the "
1353 "filesystem or be root\n"),
1354 (ctx->options & E2F_OPT_READONLY) ?
1355 "r/o" : "r/w");
1356 else if (retval == ENXIO)
1357 log_out(ctx, _("Possibly non-existent or "
1358 "swap device?\n"));
1359 else if (retval == EBUSY)
1360 log_out(ctx, _("Filesystem mounted or opened "
1361 "exclusively by another program?\n"));
1362 else if (retval == ENOENT)
1363 log_out(ctx, _("Possibly non-existent device?\n"));
1364 #ifdef EROFS
1365 else if (retval == EROFS)
1366 log_out(ctx, _("Disk write-protected; use the -n "
1367 "option to do a read-only\n"
1368 "check of the device.\n"));
1369 #endif
1370 else
1371 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1372 fatal_error(ctx, 0);
1373 }
1374 /*
1375 * We only update the master superblock because (a) paranoia;
1376 * we don't want to corrupt the backup superblocks, and (b) we
1377 * don't need to update the mount count and last checked
1378 * fields in the backup superblock (the kernel doesn't update
1379 * the backup superblocks anyway). With newer versions of the
1380 * library this flag is set by ext2fs_open2(), but we set this
1381 * here just to be sure. (No, we don't support e2fsck running
1382 * with some other libext2fs than the one that it was shipped
1383 * with, but just in case....)
1384 */
1385 fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
1386
1387 if (!(ctx->flags & E2F_FLAG_GOT_DEVSIZE)) {
1388 __u32 blocksize = EXT2_BLOCK_SIZE(fs->super);
1389 int need_restart = 0;
1390
1391 pctx.errcode = ext2fs_get_device_size2(ctx->filesystem_name,
1392 blocksize,
1393 &ctx->num_blocks);
1394 /*
1395 * The floppy driver refuses to allow anyone else to
1396 * open the device if has been opened with O_EXCL;
1397 * this is unlike other block device drivers in Linux.
1398 * To handle this, we close the filesystem and then
1399 * reopen the filesystem after we get the device size.
1400 */
1401 if (pctx.errcode == EBUSY) {
1402 ext2fs_close(fs);
1403 need_restart++;
1404 pctx.errcode =
1405 ext2fs_get_device_size2(ctx->filesystem_name,
1406 blocksize,
1407 &ctx->num_blocks);
1408 }
1409 if (pctx.errcode == EXT2_ET_UNIMPLEMENTED)
1410 ctx->num_blocks = 0;
1411 else if (pctx.errcode) {
1412 fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx);
1413 ctx->flags |= E2F_FLAG_ABORT;
1414 fatal_error(ctx, 0);
1415 }
1416 ctx->flags |= E2F_FLAG_GOT_DEVSIZE;
1417 if (need_restart)
1418 goto restart;
1419 }
1420
1421 ctx->fs = fs;
1422 fs->priv_data = ctx;
1423 fs->now = ctx->now;
1424 sb = fs->super;
1425
1426 if (sb->s_rev_level > E2FSCK_CURRENT_REV) {
1427 com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH,
1428 _("while trying to open %s"),
1429 ctx->filesystem_name);
1430 get_newer:
1431 fatal_error(ctx, _("Get a newer version of e2fsck!"));
1432 }
1433
1434 /*
1435 * Set the device name, which is used whenever we print error
1436 * or informational messages to the user.
1437 */
1438 if (ctx->device_name == 0 &&
1439 (sb->s_volume_name[0] != 0)) {
1440 ctx->device_name = string_copy(ctx, sb->s_volume_name,
1441 sizeof(sb->s_volume_name));
1442 }
1443 if (ctx->device_name == 0)
1444 ctx->device_name = string_copy(ctx, ctx->filesystem_name, 0);
1445 for (cp = ctx->device_name; *cp; cp++)
1446 if (isspace(*cp) || *cp == ':')
1447 *cp = '_';
1448
1449 ehandler_init(fs->io);
1450
1451 if ((fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_MMP) &&
1452 (flags & EXT2_FLAG_SKIP_MMP)) {
1453 if (e2fsck_check_mmp(fs, ctx))
1454 fatal_error(ctx, 0);
1455
1456 /*
1457 * Restart in order to reopen fs but this time start mmp.
1458 */
1459 ext2fs_close(fs);
1460 ctx->fs = NULL;
1461 flags &= ~EXT2_FLAG_SKIP_MMP;
1462 goto restart;
1463 }
1464
1465 if (ctx->logf)
1466 fprintf(ctx->logf, "Filesystem UUID: %s\n",
1467 e2p_uuid2str(sb->s_uuid));
1468
1469 /*
1470 * Make sure the ext3 superblock fields are consistent.
1471 */
1472 retval = e2fsck_check_ext3_journal(ctx);
1473 if (retval) {
1474 com_err(ctx->program_name, retval,
1475 _("while checking ext3 journal for %s"),
1476 ctx->device_name);
1477 fatal_error(ctx, 0);
1478 }
1479
1480 /*
1481 * Check to see if we need to do ext3-style recovery. If so,
1482 * do it, and then restart the fsck.
1483 */
1484 if (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) {
1485 if (ctx->options & E2F_OPT_READONLY) {
1486 log_out(ctx, _("Warning: skipping journal recovery "
1487 "because doing a read-only filesystem "
1488 "check.\n"));
1489 io_channel_flush(ctx->fs->io);
1490 } else {
1491 if (ctx->flags & E2F_FLAG_RESTARTED) {
1492 /*
1493 * Whoops, we attempted to run the
1494 * journal twice. This should never
1495 * happen, unless the hardware or
1496 * device driver is being bogus.
1497 */
1498 com_err(ctx->program_name, 0,
1499 _("unable to set superblock flags on %s\n"), ctx->device_name);
1500 fatal_error(ctx, 0);
1501 }
1502 retval = e2fsck_run_ext3_journal(ctx);
1503 if (retval) {
1504 com_err(ctx->program_name, retval,
1505 _("while recovering ext3 journal of %s"),
1506 ctx->device_name);
1507 fatal_error(ctx, 0);
1508 }
1509 ext2fs_close(ctx->fs);
1510 ctx->fs = 0;
1511 ctx->flags |= E2F_FLAG_RESTARTED;
1512 goto restart;
1513 }
1514 }
1515
1516 /*
1517 * Check for compatibility with the feature sets. We need to
1518 * be more stringent than ext2fs_open().
1519 */
1520 features[0] = sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP;
1521 features[1] = sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP;
1522 features[2] = (sb->s_feature_ro_compat &
1523 ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1524 print_unsupp_features:
1525 if (features[0] || features[1] || features[2]) {
1526 int i, j;
1527 __u32 *mask = features, m;
1528
1529 log_err(ctx, _("%s has unsupported feature(s):"),
1530 ctx->filesystem_name);
1531
1532 for (i=0; i <3; i++,mask++) {
1533 for (j=0,m=1; j < 32; j++, m<<=1) {
1534 if (*mask & m)
1535 log_err(ctx, " %s",
1536 e2p_feature2string(i, m));
1537 }
1538 }
1539 log_err(ctx, "\n");
1540 goto get_newer;
1541 }
1542 #ifdef ENABLE_COMPRESSION
1543 if (sb->s_feature_incompat & EXT2_FEATURE_INCOMPAT_COMPRESSION)
1544 log_err(ctx, _("%s: warning: compression support "
1545 "is experimental.\n"),
1546 ctx->program_name);
1547 #endif
1548 #ifndef ENABLE_HTREE
1549 if (sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) {
1550 log_err(ctx, _("%s: e2fsck not compiled with HTREE support,\n\t"
1551 "but filesystem %s has HTREE directories.\n"),
1552 ctx->program_name, ctx->device_name);
1553 goto get_newer;
1554 }
1555 #endif
1556
1557 /*
1558 * If the user specified a specific superblock, presumably the
1559 * master superblock has been trashed. So we mark the
1560 * superblock as dirty, so it can be written out.
1561 */
1562 if (ctx->superblock &&
1563 !(ctx->options & E2F_OPT_READONLY))
1564 ext2fs_mark_super_dirty(fs);
1565
1566 /*
1567 * Calculate the number of filesystem blocks per pagesize. If
1568 * fs->blocksize > page_size, set the number of blocks per
1569 * pagesize to 1 to avoid division by zero errors.
1570 */
1571 #ifdef _SC_PAGESIZE
1572 sysval = sysconf(_SC_PAGESIZE);
1573 if (sysval > 0)
1574 sys_page_size = sysval;
1575 #endif /* _SC_PAGESIZE */
1576 ctx->blocks_per_page = sys_page_size / fs->blocksize;
1577 if (ctx->blocks_per_page == 0)
1578 ctx->blocks_per_page = 1;
1579
1580 if (ctx->superblock)
1581 set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0);
1582 ext2fs_mark_valid(fs);
1583 check_super_block(ctx);
1584 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1585 fatal_error(ctx, 0);
1586 check_if_skip(ctx);
1587 check_resize_inode(ctx);
1588 if (bad_blocks_file)
1589 read_bad_blocks_file(ctx, bad_blocks_file, replace_bad_blocks);
1590 else if (cflag)
1591 read_bad_blocks_file(ctx, 0, !keep_bad_blocks); /* Test disk */
1592 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1593 fatal_error(ctx, 0);
1594
1595 /*
1596 * Mark the system as valid, 'til proven otherwise
1597 */
1598 ext2fs_mark_valid(fs);
1599
1600 retval = ext2fs_read_bb_inode(fs, &fs->badblocks);
1601 if (retval) {
1602 log_out(ctx, _("%s: %s while reading bad blocks inode\n"),
1603 ctx->program_name, error_message(retval));
1604 preenhalt(ctx);
1605 log_out(ctx, _("This doesn't bode well, "
1606 "but we'll try to go on...\n"));
1607 }
1608
1609 /*
1610 * Save the journal size in megabytes.
1611 * Try and use the journal size from the backup else let e2fsck
1612 * find the default journal size.
1613 */
1614 if (sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS)
1615 journal_size = (sb->s_jnl_blocks[15] << (32 - 20)) |
1616 (sb->s_jnl_blocks[16] >> 20);
1617 else
1618 journal_size = -1;
1619
1620 if (sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_QUOTA) {
1621 /* Quotas were enabled. Do quota accounting during fsck. */
1622 if ((sb->s_usr_quota_inum && sb->s_grp_quota_inum) ||
1623 (!sb->s_usr_quota_inum && !sb->s_grp_quota_inum))
1624 qtype = -1;
1625 else
1626 qtype = sb->s_usr_quota_inum ? USRQUOTA : GRPQUOTA;
1627
1628 quota_init_context(&ctx->qctx, ctx->fs, qtype);
1629 }
1630
1631 run_result = e2fsck_run(ctx);
1632 e2fsck_clear_progbar(ctx);
1633
1634 if (ctx->flags & E2F_FLAG_JOURNAL_INODE) {
1635 if (fix_problem(ctx, PR_6_RECREATE_JOURNAL, &pctx)) {
1636 if (journal_size < 1024)
1637 journal_size = ext2fs_default_journal_size(ext2fs_blocks_count(fs->super));
1638 if (journal_size < 0) {
1639 fs->super->s_feature_compat &=
1640 ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
1641 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1642 log_out(ctx, "%s: Couldn't determine "
1643 "journal size\n", ctx->program_name);
1644 goto no_journal;
1645 }
1646 log_out(ctx, _("Creating journal (%d blocks): "),
1647 journal_size);
1648 fflush(stdout);
1649 retval = ext2fs_add_journal_inode(fs,
1650 journal_size, 0);
1651 if (retval) {
1652 log_out(ctx, "%s: while trying to create "
1653 "journal\n", error_message(retval));
1654 goto no_journal;
1655 }
1656 log_out(ctx, _(" Done.\n"));
1657 log_out(ctx, _("\n*** journal has been re-created - "
1658 "filesystem is now ext3 again ***\n"));
1659 }
1660 }
1661 no_journal:
1662
1663 if (ctx->qctx) {
1664 int i, needs_writeout;
1665 for (i = 0; i < MAXQUOTAS; i++) {
1666 if (qtype != -1 && qtype != i)
1667 continue;
1668 needs_writeout = 0;
1669 pctx.num = i;
1670 retval = quota_compare_and_update(ctx->qctx, i,
1671 &needs_writeout);
1672 if ((retval || needs_writeout) &&
1673 fix_problem(ctx, PR_6_UPDATE_QUOTAS, &pctx))
1674 quota_write_inode(ctx->qctx, i);
1675 }
1676 quota_release_context(&ctx->qctx);
1677 }
1678
1679 if (run_result == E2F_FLAG_RESTART) {
1680 log_out(ctx, _("Restarting e2fsck from the beginning...\n"));
1681 retval = e2fsck_reset_context(ctx);
1682 if (retval) {
1683 com_err(ctx->program_name, retval,
1684 _("while resetting context"));
1685 fatal_error(ctx, 0);
1686 }
1687 ext2fs_close(fs);
1688 goto restart;
1689 }
1690 if (run_result & E2F_FLAG_CANCEL) {
1691 log_out(ctx, _("%s: e2fsck canceled.\n"), ctx->device_name ?
1692 ctx->device_name : ctx->filesystem_name);
1693 exit_value |= FSCK_CANCELED;
1694 }
1695 if (run_result & E2F_FLAG_ABORT)
1696 fatal_error(ctx, _("aborted"));
1697 if (check_backup_super_block(ctx)) {
1698 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1699 ext2fs_mark_super_dirty(fs);
1700 }
1701
1702 #ifdef MTRACE
1703 mtrace_print("Cleanup");
1704 #endif
1705 if (ext2fs_test_changed(fs)) {
1706 exit_value |= FSCK_NONDESTRUCT;
1707 if (!(ctx->options & E2F_OPT_PREEN))
1708 log_out(ctx, _("\n%s: ***** FILE SYSTEM WAS "
1709 "MODIFIED *****\n"),
1710 ctx->device_name);
1711 if (ctx->mount_flags & EXT2_MF_ISROOT) {
1712 log_out(ctx, _("%s: ***** REBOOT LINUX *****\n"),
1713 ctx->device_name);
1714 exit_value |= FSCK_REBOOT;
1715 }
1716 }
1717 if (!ext2fs_test_valid(fs) ||
1718 ((exit_value & FSCK_CANCELED) &&
1719 (sb->s_state & EXT2_ERROR_FS))) {
1720 log_out(ctx, _("\n%s: ********** WARNING: Filesystem still has "
1721 "errors **********\n\n"), ctx->device_name);
1722 exit_value |= FSCK_UNCORRECTED;
1723 exit_value &= ~FSCK_NONDESTRUCT;
1724 }
1725 if (exit_value & FSCK_CANCELED) {
1726 int allow_cancellation;
1727
1728 profile_get_boolean(ctx->profile, "options",
1729 "allow_cancellation", 0, 0,
1730 &allow_cancellation);
1731 exit_value &= ~FSCK_NONDESTRUCT;
1732 if (allow_cancellation && ext2fs_test_valid(fs) &&
1733 (sb->s_state & EXT2_VALID_FS) &&
1734 !(sb->s_state & EXT2_ERROR_FS))
1735 exit_value = 0;
1736 } else {
1737 show_stats(ctx);
1738 if (!(ctx->options & E2F_OPT_READONLY)) {
1739 if (ext2fs_test_valid(fs)) {
1740 if (!(sb->s_state & EXT2_VALID_FS))
1741 exit_value |= FSCK_NONDESTRUCT;
1742 sb->s_state = EXT2_VALID_FS;
1743 } else
1744 sb->s_state &= ~EXT2_VALID_FS;
1745 sb->s_mnt_count = 0;
1746 if (!(ctx->flags & E2F_FLAG_TIME_INSANE))
1747 sb->s_lastcheck = ctx->now;
1748 memset(((char *) sb) + EXT4_S_ERR_START, 0,
1749 EXT4_S_ERR_LEN);
1750 ext2fs_mark_super_dirty(fs);
1751 }
1752 }
1753
1754 if ((run_result & E2F_FLAG_CANCEL) == 0 &&
1755 ext2fs_has_group_desc_csum(ctx->fs) &&
1756 !(ctx->options & E2F_OPT_READONLY)) {
1757 retval = ext2fs_set_gdt_csum(ctx->fs);
1758 if (retval) {
1759 com_err(ctx->program_name, retval,
1760 _("while setting block group checksum info"));
1761 fatal_error(ctx, 0);
1762 }
1763 }
1764
1765 e2fsck_write_bitmaps(ctx);
1766 io_channel_flush(ctx->fs->io);
1767 print_resource_track(ctx, NULL, &ctx->global_rtrack, ctx->fs->io);
1768
1769 ext2fs_close(fs);
1770 ctx->fs = NULL;
1771 free(ctx->journal_name);
1772
1773 e2fsck_free_context(ctx);
1774 remove_error_table(&et_ext2_error_table);
1775 remove_error_table(&et_prof_error_table);
1776 return exit_value;
1777 }
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