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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, "%s", _("\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, "%s", _(""
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, "%s", _(" 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 if (ctx->mount_flags & EXT2_MF_MOUNTED)
253 log_out(ctx, _("Warning! %s is mounted.\n"),
254 ctx->filesystem_name);
255 else
256 log_out(ctx, _("Warning! %s is in use.\n"),
257 ctx->filesystem_name);
258 return;
259 }
260
261 if (ctx->mount_flags & EXT2_MF_MOUNTED)
262 log_out(ctx, _("%s is mounted.\n"), ctx->filesystem_name);
263 else
264 log_out(ctx, _("%s is in use.\n"), ctx->filesystem_name);
265 if (!ctx->interactive || ctx->mount_flags & EXT2_MF_BUSY)
266 fatal_error(ctx, _("Cannot continue, aborting.\n\n"));
267 puts("\007\007\007\007");
268 log_out(ctx, "%s", _("\n\nWARNING!!! "
269 "The filesystem is mounted. "
270 "If you continue you ***WILL***\n"
271 "cause ***SEVERE*** filesystem damage.\n\n"));
272 puts("\007\007\007");
273 cont = ask_yn(ctx, _("Do you really want to continue"), 0);
274 if (!cont) {
275 printf("%s", _("check aborted.\n"));
276 exit (0);
277 }
278 return;
279 }
280
281 static int is_on_batt(void)
282 {
283 FILE *f;
284 DIR *d;
285 char tmp[80], tmp2[80], fname[80];
286 unsigned int acflag;
287 struct dirent* de;
288
289 f = fopen("/sys/class/power_supply/AC/online", "r");
290 if (f) {
291 if (fscanf(f, "%u\n", &acflag) == 1) {
292 fclose(f);
293 return (!acflag);
294 }
295 fclose(f);
296 }
297 f = fopen("/proc/apm", "r");
298 if (f) {
299 if (fscanf(f, "%s %s %s %x", tmp, tmp, tmp, &acflag) != 4)
300 acflag = 1;
301 fclose(f);
302 return (acflag != 1);
303 }
304 d = opendir("/proc/acpi/ac_adapter");
305 if (d) {
306 while ((de=readdir(d)) != NULL) {
307 if (!strncmp(".", de->d_name, 1))
308 continue;
309 snprintf(fname, 80, "/proc/acpi/ac_adapter/%s/state",
310 de->d_name);
311 f = fopen(fname, "r");
312 if (!f)
313 continue;
314 if (fscanf(f, "%s %s", tmp2, tmp) != 2)
315 tmp[0] = 0;
316 fclose(f);
317 if (strncmp(tmp, "off-line", 8) == 0) {
318 closedir(d);
319 return 1;
320 }
321 }
322 closedir(d);
323 }
324 return 0;
325 }
326
327 /*
328 * This routine checks to see if a filesystem can be skipped; if so,
329 * it will exit with E2FSCK_OK. Under some conditions it will print a
330 * message explaining why a check is being forced.
331 */
332 static void check_if_skip(e2fsck_t ctx)
333 {
334 ext2_filsys fs = ctx->fs;
335 struct problem_context pctx;
336 const char *reason = NULL;
337 unsigned int reason_arg = 0;
338 long next_check;
339 int batt = is_on_batt();
340 int defer_check_on_battery;
341 int broken_system_clock;
342 time_t lastcheck;
343
344 if (ctx->flags & E2F_FLAG_PROBLEMS_FIXED)
345 return;
346
347 profile_get_boolean(ctx->profile, "options", "broken_system_clock",
348 0, 0, &broken_system_clock);
349 if (ctx->flags & E2F_FLAG_TIME_INSANE)
350 broken_system_clock = 1;
351 profile_get_boolean(ctx->profile, "options",
352 "defer_check_on_battery", 0, 1,
353 &defer_check_on_battery);
354 if (!defer_check_on_battery)
355 batt = 0;
356
357 if ((ctx->options & E2F_OPT_FORCE) || bad_blocks_file || cflag)
358 return;
359
360 if (ctx->options & E2F_OPT_JOURNAL_ONLY)
361 goto skip;
362
363 lastcheck = fs->super->s_lastcheck;
364 if (lastcheck > ctx->now)
365 lastcheck -= ctx->time_fudge;
366 if ((fs->super->s_state & EXT2_ERROR_FS) ||
367 !ext2fs_test_valid(fs))
368 reason = _(" contains a file system with errors");
369 else if ((fs->super->s_state & EXT2_VALID_FS) == 0)
370 reason = _(" was not cleanly unmounted");
371 else if (check_backup_super_block(ctx))
372 reason = _(" primary superblock features different from backup");
373 else if ((fs->super->s_max_mnt_count > 0) &&
374 (fs->super->s_mnt_count >=
375 (unsigned) fs->super->s_max_mnt_count)) {
376 reason = _(" has been mounted %u times without being checked");
377 reason_arg = fs->super->s_mnt_count;
378 if (batt && (fs->super->s_mnt_count <
379 (unsigned) fs->super->s_max_mnt_count*2))
380 reason = 0;
381 } else if (!broken_system_clock && fs->super->s_checkinterval &&
382 (ctx->now < lastcheck)) {
383 reason = _(" has filesystem last checked time in the future");
384 if (batt)
385 reason = 0;
386 } else if (!broken_system_clock && fs->super->s_checkinterval &&
387 ((ctx->now - lastcheck) >=
388 ((time_t) fs->super->s_checkinterval))) {
389 reason = _(" has gone %u days without being checked");
390 reason_arg = (ctx->now - fs->super->s_lastcheck)/(3600*24);
391 if (batt && ((ctx->now - fs->super->s_lastcheck) <
392 fs->super->s_checkinterval*2))
393 reason = 0;
394 }
395 if (reason) {
396 log_out(ctx, "%s", ctx->device_name);
397 log_out(ctx, reason, reason_arg);
398 log_out(ctx, "%s", _(", check forced.\n"));
399 return;
400 }
401
402 /*
403 * Update the global counts from the block group counts. This
404 * is needed since modern kernels don't update the global
405 * counts so as to avoid locking the entire file system. So
406 * if the filesystem is not unmounted cleanly, the global
407 * counts may not be accurate. Update them here if we can,
408 * for the benefit of users who might examine the file system
409 * using dumpe2fs. (This is for cosmetic reasons only.)
410 */
411 clear_problem_context(&pctx);
412 pctx.ino = fs->super->s_free_inodes_count;
413 pctx.ino2 = ctx->free_inodes;
414 if ((pctx.ino != pctx.ino2) &&
415 !(ctx->options & E2F_OPT_READONLY) &&
416 fix_problem(ctx, PR_0_FREE_INODE_COUNT, &pctx)) {
417 fs->super->s_free_inodes_count = ctx->free_inodes;
418 ext2fs_mark_super_dirty(fs);
419 }
420 clear_problem_context(&pctx);
421 pctx.blk = ext2fs_free_blocks_count(fs->super);
422 pctx.blk2 = ctx->free_blocks;
423 if ((pctx.blk != pctx.blk2) &&
424 !(ctx->options & E2F_OPT_READONLY) &&
425 fix_problem(ctx, PR_0_FREE_BLOCK_COUNT, &pctx)) {
426 ext2fs_free_blocks_count_set(fs->super, ctx->free_blocks);
427 ext2fs_mark_super_dirty(fs);
428 }
429
430 /* Print the summary message when we're skipping a full check */
431 log_out(ctx, _("%s: clean, %u/%u files, %llu/%llu blocks"),
432 ctx->device_name,
433 fs->super->s_inodes_count - fs->super->s_free_inodes_count,
434 fs->super->s_inodes_count,
435 ext2fs_blocks_count(fs->super) -
436 ext2fs_free_blocks_count(fs->super),
437 ext2fs_blocks_count(fs->super));
438 next_check = 100000;
439 if (fs->super->s_max_mnt_count > 0) {
440 next_check = fs->super->s_max_mnt_count - fs->super->s_mnt_count;
441 if (next_check <= 0)
442 next_check = 1;
443 }
444 if (!broken_system_clock && fs->super->s_checkinterval &&
445 ((ctx->now - fs->super->s_lastcheck) >= fs->super->s_checkinterval))
446 next_check = 1;
447 if (next_check <= 5) {
448 if (next_check == 1) {
449 if (batt)
450 log_out(ctx, "%s",
451 _(" (check deferred; on battery)"));
452 else
453 log_out(ctx, "%s",
454 _(" (check after next mount)"));
455 } else
456 log_out(ctx, _(" (check in %ld mounts)"),
457 next_check);
458 }
459 log_out(ctx, "\n");
460 skip:
461 ext2fs_close_free(&fs);
462 e2fsck_free_context(ctx);
463 exit(FSCK_OK);
464 }
465
466 /*
467 * For completion notice
468 */
469 struct percent_tbl {
470 int max_pass;
471 int table[32];
472 };
473 static struct percent_tbl e2fsck_tbl = {
474 5, { 0, 70, 90, 92, 95, 100 }
475 };
476 static char bar[128], spaces[128];
477
478 static float calc_percent(struct percent_tbl *tbl, int pass, int curr,
479 int max)
480 {
481 float percent;
482
483 if (pass <= 0)
484 return 0.0;
485 if (pass > tbl->max_pass || max == 0)
486 return 100.0;
487 percent = ((float) curr) / ((float) max);
488 return ((percent * (tbl->table[pass] - tbl->table[pass-1]))
489 + tbl->table[pass-1]);
490 }
491
492 void e2fsck_clear_progbar(e2fsck_t ctx)
493 {
494 if (!(ctx->flags & E2F_FLAG_PROG_BAR))
495 return;
496
497 printf("%s%s\r%s", ctx->start_meta, spaces + (sizeof(spaces) - 80),
498 ctx->stop_meta);
499 fflush(stdout);
500 ctx->flags &= ~E2F_FLAG_PROG_BAR;
501 }
502
503 int e2fsck_simple_progress(e2fsck_t ctx, const char *label, float percent,
504 unsigned int dpynum)
505 {
506 static const char spinner[] = "\\|/-";
507 int i;
508 unsigned int tick;
509 struct timeval tv;
510 int dpywidth;
511 int fixed_percent;
512
513 if (ctx->flags & E2F_FLAG_PROG_SUPPRESS)
514 return 0;
515
516 /*
517 * Calculate the new progress position. If the
518 * percentage hasn't changed, then we skip out right
519 * away.
520 */
521 fixed_percent = (int) ((10 * percent) + 0.5);
522 if (ctx->progress_last_percent == fixed_percent)
523 return 0;
524 ctx->progress_last_percent = fixed_percent;
525
526 /*
527 * If we've already updated the spinner once within
528 * the last 1/8th of a second, no point doing it
529 * again.
530 */
531 gettimeofday(&tv, NULL);
532 tick = (tv.tv_sec << 3) + (tv.tv_usec / (1000000 / 8));
533 if ((tick == ctx->progress_last_time) &&
534 (fixed_percent != 0) && (fixed_percent != 1000))
535 return 0;
536 ctx->progress_last_time = tick;
537
538 /*
539 * Advance the spinner, and note that the progress bar
540 * will be on the screen
541 */
542 ctx->progress_pos = (ctx->progress_pos+1) & 3;
543 ctx->flags |= E2F_FLAG_PROG_BAR;
544
545 dpywidth = 66 - strlen(label);
546 dpywidth = 8 * (dpywidth / 8);
547 if (dpynum)
548 dpywidth -= 8;
549
550 i = ((percent * dpywidth) + 50) / 100;
551 printf("%s%s: |%s%s", ctx->start_meta, label,
552 bar + (sizeof(bar) - (i+1)),
553 spaces + (sizeof(spaces) - (dpywidth - i + 1)));
554 if (fixed_percent == 1000)
555 fputc('|', stdout);
556 else
557 fputc(spinner[ctx->progress_pos & 3], stdout);
558 printf(" %4.1f%% ", percent);
559 if (dpynum)
560 printf("%u\r", dpynum);
561 else
562 fputs(" \r", stdout);
563 fputs(ctx->stop_meta, stdout);
564
565 if (fixed_percent == 1000)
566 e2fsck_clear_progbar(ctx);
567 fflush(stdout);
568
569 return 0;
570 }
571
572 static int e2fsck_update_progress(e2fsck_t ctx, int pass,
573 unsigned long cur, unsigned long max)
574 {
575 char buf[1024];
576 float percent;
577
578 if (pass == 0)
579 return 0;
580
581 if (ctx->progress_fd) {
582 snprintf(buf, sizeof(buf), "%d %lu %lu %s\n",
583 pass, cur, max, ctx->device_name);
584 write_all(ctx->progress_fd, buf, strlen(buf));
585 } else {
586 percent = calc_percent(&e2fsck_tbl, pass, cur, max);
587 e2fsck_simple_progress(ctx, ctx->device_name,
588 percent, 0);
589 }
590 return 0;
591 }
592
593 #define PATH_SET "PATH=/sbin"
594
595 /*
596 * Make sure 0,1,2 file descriptors are open, so that we don't open
597 * the filesystem using the same file descriptor as stdout or stderr.
598 */
599 static void reserve_stdio_fds(void)
600 {
601 int fd = 0;
602
603 while (fd <= 2) {
604 fd = open("/dev/null", O_RDWR);
605 if (fd < 0) {
606 fprintf(stderr, _("ERROR: Couldn't open "
607 "/dev/null (%s)\n"),
608 strerror(errno));
609 break;
610 }
611 }
612 }
613
614 #ifdef HAVE_SIGNAL_H
615 static void signal_progress_on(int sig EXT2FS_ATTR((unused)))
616 {
617 e2fsck_t ctx = e2fsck_global_ctx;
618
619 if (!ctx)
620 return;
621
622 ctx->progress = e2fsck_update_progress;
623 }
624
625 static void signal_progress_off(int sig EXT2FS_ATTR((unused)))
626 {
627 e2fsck_t ctx = e2fsck_global_ctx;
628
629 if (!ctx)
630 return;
631
632 e2fsck_clear_progbar(ctx);
633 ctx->progress = 0;
634 }
635
636 static void signal_cancel(int sig EXT2FS_ATTR((unused)))
637 {
638 e2fsck_t ctx = e2fsck_global_ctx;
639
640 if (!ctx)
641 exit(FSCK_CANCELED);
642
643 ctx->flags |= E2F_FLAG_CANCEL;
644 }
645 #endif
646
647 static void parse_extended_opts(e2fsck_t ctx, const char *opts)
648 {
649 char *buf, *token, *next, *p, *arg;
650 int ea_ver;
651 int extended_usage = 0;
652
653 buf = string_copy(ctx, opts, 0);
654 for (token = buf; token && *token; token = next) {
655 p = strchr(token, ',');
656 next = 0;
657 if (p) {
658 *p = 0;
659 next = p+1;
660 }
661 arg = strchr(token, '=');
662 if (arg) {
663 *arg = 0;
664 arg++;
665 }
666 if (strcmp(token, "ea_ver") == 0) {
667 if (!arg) {
668 extended_usage++;
669 continue;
670 }
671 ea_ver = strtoul(arg, &p, 0);
672 if (*p ||
673 ((ea_ver != 1) && (ea_ver != 2))) {
674 fprintf(stderr, "%s",
675 _("Invalid EA version.\n"));
676 extended_usage++;
677 continue;
678 }
679 ctx->ext_attr_ver = ea_ver;
680 } else if (strcmp(token, "fragcheck") == 0) {
681 ctx->options |= E2F_OPT_FRAGCHECK;
682 continue;
683 } else if (strcmp(token, "journal_only") == 0) {
684 if (arg) {
685 extended_usage++;
686 continue;
687 }
688 ctx->options |= E2F_OPT_JOURNAL_ONLY;
689 } else if (strcmp(token, "discard") == 0) {
690 ctx->options |= E2F_OPT_DISCARD;
691 continue;
692 } else if (strcmp(token, "nodiscard") == 0) {
693 ctx->options &= ~E2F_OPT_DISCARD;
694 continue;
695 } else if (strcmp(token, "log_filename") == 0) {
696 if (!arg)
697 extended_usage++;
698 else
699 ctx->log_fn = string_copy(ctx, arg, 0);
700 continue;
701 } else {
702 fprintf(stderr, _("Unknown extended option: %s\n"),
703 token);
704 extended_usage++;
705 }
706 }
707 free(buf);
708
709 if (extended_usage) {
710 fputs(("\nExtended options are separated by commas, "
711 "and may take an argument which\n"
712 "is set off by an equals ('=') sign. "
713 "Valid extended options are:\n"), stderr);
714 fputs(("\tea_ver=<ea_version (1 or 2)>\n"), stderr);
715 fputs(("\tfragcheck\n"), stderr);
716 fputs(("\tjournal_only\n"), stderr);
717 fputs(("\tdiscard\n"), stderr);
718 fputs(("\tnodiscard\n"), stderr);
719 fputc('\n', stderr);
720 exit(1);
721 }
722 }
723
724 static void syntax_err_report(const char *filename, long err, int line_num)
725 {
726 fprintf(stderr,
727 _("Syntax error in e2fsck config file (%s, line #%d)\n\t%s\n"),
728 filename, line_num, error_message(err));
729 exit(FSCK_ERROR);
730 }
731
732 static const char *config_fn[] = { ROOT_SYSCONFDIR "/e2fsck.conf", 0 };
733
734 static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx)
735 {
736 int flush = 0;
737 int c, fd;
738 #ifdef MTRACE
739 extern void *mallwatch;
740 #endif
741 e2fsck_t ctx;
742 errcode_t retval;
743 #ifdef HAVE_SIGNAL_H
744 struct sigaction sa;
745 #endif
746 char *extended_opts = 0;
747 char *cp;
748 int res; /* result of sscanf */
749 #ifdef CONFIG_JBD_DEBUG
750 char *jbd_debug;
751 #endif
752
753 retval = e2fsck_allocate_context(&ctx);
754 if (retval)
755 return retval;
756
757 *ret_ctx = ctx;
758 e2fsck_global_ctx = ctx;
759
760 setvbuf(stdout, NULL, _IONBF, BUFSIZ);
761 setvbuf(stderr, NULL, _IONBF, BUFSIZ);
762 if (isatty(0) && isatty(1)) {
763 ctx->interactive = 1;
764 } else {
765 ctx->start_meta[0] = '\001';
766 ctx->stop_meta[0] = '\002';
767 }
768 memset(bar, '=', sizeof(bar)-1);
769 memset(spaces, ' ', sizeof(spaces)-1);
770 add_error_table(&et_ext2_error_table);
771 add_error_table(&et_prof_error_table);
772 blkid_get_cache(&ctx->blkid, NULL);
773
774 if (argc && *argv)
775 ctx->program_name = *argv;
776 else
777 ctx->program_name = "e2fsck";
778
779 while ((c = getopt (argc, argv, "panyrcC:B:dE:fvtFVM:b:I:j:P:l:L:N:SsDk")) != EOF)
780 switch (c) {
781 case 'C':
782 ctx->progress = e2fsck_update_progress;
783 res = sscanf(optarg, "%d", &ctx->progress_fd);
784 if (res != 1)
785 goto sscanf_err;
786
787 if (ctx->progress_fd < 0) {
788 ctx->progress = 0;
789 ctx->progress_fd = ctx->progress_fd * -1;
790 }
791 if (!ctx->progress_fd)
792 break;
793 /* Validate the file descriptor to avoid disasters */
794 fd = dup(ctx->progress_fd);
795 if (fd < 0) {
796 fprintf(stderr,
797 _("Error validating file descriptor %d: %s\n"),
798 ctx->progress_fd,
799 error_message(errno));
800 fatal_error(ctx,
801 _("Invalid completion information file descriptor"));
802 } else
803 close(fd);
804 break;
805 case 'D':
806 ctx->options |= E2F_OPT_COMPRESS_DIRS;
807 break;
808 case 'E':
809 extended_opts = optarg;
810 break;
811 case 'p':
812 case 'a':
813 if (ctx->options & (E2F_OPT_YES|E2F_OPT_NO)) {
814 conflict_opt:
815 fatal_error(ctx,
816 _("Only one of the options -p/-a, -n or -y may be specified."));
817 }
818 ctx->options |= E2F_OPT_PREEN;
819 break;
820 case 'n':
821 if (ctx->options & (E2F_OPT_YES|E2F_OPT_PREEN))
822 goto conflict_opt;
823 ctx->options |= E2F_OPT_NO;
824 break;
825 case 'y':
826 if (ctx->options & (E2F_OPT_PREEN|E2F_OPT_NO))
827 goto conflict_opt;
828 ctx->options |= E2F_OPT_YES;
829 break;
830 case 't':
831 #ifdef RESOURCE_TRACK
832 if (ctx->options & E2F_OPT_TIME)
833 ctx->options |= E2F_OPT_TIME2;
834 else
835 ctx->options |= E2F_OPT_TIME;
836 #else
837 fprintf(stderr, _("The -t option is not "
838 "supported on this version of e2fsck.\n"));
839 #endif
840 break;
841 case 'c':
842 if (cflag++)
843 ctx->options |= E2F_OPT_WRITECHECK;
844 ctx->options |= E2F_OPT_CHECKBLOCKS;
845 break;
846 case 'r':
847 /* What we do by default, anyway! */
848 break;
849 case 'b':
850 res = sscanf(optarg, "%llu", &ctx->use_superblock);
851 if (res != 1)
852 goto sscanf_err;
853 ctx->flags |= E2F_FLAG_SB_SPECIFIED;
854 break;
855 case 'B':
856 ctx->blocksize = atoi(optarg);
857 break;
858 case 'I':
859 res = sscanf(optarg, "%d", &ctx->inode_buffer_blocks);
860 if (res != 1)
861 goto sscanf_err;
862 break;
863 case 'j':
864 ctx->journal_name = blkid_get_devname(ctx->blkid,
865 optarg, NULL);
866 if (!ctx->journal_name) {
867 com_err(ctx->program_name, 0,
868 _("Unable to resolve '%s'"),
869 optarg);
870 fatal_error(ctx, 0);
871 }
872 break;
873 case 'P':
874 res = sscanf(optarg, "%d", &ctx->process_inode_size);
875 if (res != 1)
876 goto sscanf_err;
877 break;
878 case 'L':
879 replace_bad_blocks++;
880 case 'l':
881 if (bad_blocks_file)
882 free(bad_blocks_file);
883 bad_blocks_file = string_copy(ctx, optarg, 0);
884 break;
885 case 'd':
886 ctx->options |= E2F_OPT_DEBUG;
887 break;
888 case 'f':
889 ctx->options |= E2F_OPT_FORCE;
890 break;
891 case 'F':
892 flush = 1;
893 break;
894 case 'v':
895 verbose = 1;
896 break;
897 case 'V':
898 show_version_only = 1;
899 break;
900 #ifdef MTRACE
901 case 'M':
902 mallwatch = (void *) strtol(optarg, NULL, 0);
903 break;
904 #endif
905 case 'N':
906 ctx->device_name = string_copy(ctx, optarg, 0);
907 break;
908 case 'k':
909 keep_bad_blocks++;
910 break;
911 default:
912 usage(ctx);
913 }
914 if (show_version_only)
915 return 0;
916 if (optind != argc - 1)
917 usage(ctx);
918 if ((ctx->options & E2F_OPT_NO) &&
919 (ctx->options & E2F_OPT_COMPRESS_DIRS)) {
920 com_err(ctx->program_name, 0, "%s",
921 _("The -n and -D options are incompatible."));
922 fatal_error(ctx, 0);
923 }
924 if ((ctx->options & E2F_OPT_NO) && cflag) {
925 com_err(ctx->program_name, 0, "%s",
926 _("The -n and -c options are incompatible."));
927 fatal_error(ctx, 0);
928 }
929 if ((ctx->options & E2F_OPT_NO) && bad_blocks_file) {
930 com_err(ctx->program_name, 0, "%s",
931 _("The -n and -l/-L options are incompatible."));
932 fatal_error(ctx, 0);
933 }
934 if (ctx->options & E2F_OPT_NO)
935 ctx->options |= E2F_OPT_READONLY;
936
937 ctx->io_options = strchr(argv[optind], '?');
938 if (ctx->io_options)
939 *ctx->io_options++ = 0;
940 ctx->filesystem_name = blkid_get_devname(ctx->blkid, argv[optind], 0);
941 if (!ctx->filesystem_name) {
942 com_err(ctx->program_name, 0, _("Unable to resolve '%s'"),
943 argv[optind]);
944 fatal_error(ctx, 0);
945 }
946 if (extended_opts)
947 parse_extended_opts(ctx, extended_opts);
948
949 if ((cp = getenv("E2FSCK_CONFIG")) != NULL)
950 config_fn[0] = cp;
951 profile_set_syntax_err_cb(syntax_err_report);
952 profile_init(config_fn, &ctx->profile);
953
954 profile_get_boolean(ctx->profile, "options", "report_time", 0, 0,
955 &c);
956 if (c)
957 ctx->options |= E2F_OPT_TIME | E2F_OPT_TIME2;
958 profile_get_boolean(ctx->profile, "options", "report_verbose", 0, 0,
959 &c);
960 if (c)
961 verbose = 1;
962
963 /* Turn off discard in read-only mode */
964 if ((ctx->options & E2F_OPT_NO) &&
965 (ctx->options & E2F_OPT_DISCARD))
966 ctx->options &= ~E2F_OPT_DISCARD;
967
968 if (flush) {
969 fd = open(ctx->filesystem_name, O_RDONLY, 0);
970 if (fd < 0) {
971 com_err("open", errno,
972 _("while opening %s for flushing"),
973 ctx->filesystem_name);
974 fatal_error(ctx, 0);
975 }
976 if ((retval = ext2fs_sync_device(fd, 1))) {
977 com_err("ext2fs_sync_device", retval,
978 _("while trying to flush %s"),
979 ctx->filesystem_name);
980 fatal_error(ctx, 0);
981 }
982 close(fd);
983 }
984 if (cflag && bad_blocks_file) {
985 fprintf(stderr, "%s", _("The -c and the -l/-L options may not "
986 "be both used at the same time.\n"));
987 exit(FSCK_USAGE);
988 }
989 #ifdef HAVE_SIGNAL_H
990 /*
991 * Set up signal action
992 */
993 memset(&sa, 0, sizeof(struct sigaction));
994 sa.sa_handler = signal_cancel;
995 sigaction(SIGINT, &sa, 0);
996 sigaction(SIGTERM, &sa, 0);
997 #ifdef SA_RESTART
998 sa.sa_flags = SA_RESTART;
999 #endif
1000 sa.sa_handler = signal_progress_on;
1001 sigaction(SIGUSR1, &sa, 0);
1002 sa.sa_handler = signal_progress_off;
1003 sigaction(SIGUSR2, &sa, 0);
1004 #endif
1005
1006 /* Update our PATH to include /sbin if we need to run badblocks */
1007 if (cflag) {
1008 char *oldpath = getenv("PATH");
1009 char *newpath;
1010 int len = sizeof(PATH_SET) + 1;
1011
1012 if (oldpath)
1013 len += strlen(oldpath);
1014
1015 newpath = malloc(len);
1016 if (!newpath)
1017 fatal_error(ctx, "Couldn't malloc() newpath");
1018 strcpy(newpath, PATH_SET);
1019
1020 if (oldpath) {
1021 strcat(newpath, ":");
1022 strcat(newpath, oldpath);
1023 }
1024 putenv(newpath);
1025 }
1026 #ifdef CONFIG_JBD_DEBUG
1027 jbd_debug = getenv("E2FSCK_JBD_DEBUG");
1028 if (jbd_debug) {
1029 res = sscanf(jbd_debug, "%d", &journal_enable_debug);
1030 if (res != 1) {
1031 fprintf(stderr,
1032 _("E2FSCK_JBD_DEBUG \"%s\" not an integer\n\n"),
1033 jbd_debug);
1034 exit (1);
1035 }
1036 }
1037 #endif
1038 return 0;
1039
1040 sscanf_err:
1041 fprintf(stderr, _("\nInvalid non-numeric argument to -%c (\"%s\")\n\n"),
1042 c, optarg);
1043 exit (1);
1044 }
1045
1046 static errcode_t try_open_fs(e2fsck_t ctx, int flags, io_manager io_ptr,
1047 ext2_filsys *ret_fs)
1048 {
1049 errcode_t retval;
1050
1051 *ret_fs = NULL;
1052 if (ctx->superblock && ctx->blocksize) {
1053 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1054 flags, ctx->superblock, ctx->blocksize,
1055 io_ptr, ret_fs);
1056 } else if (ctx->superblock) {
1057 int blocksize;
1058 for (blocksize = EXT2_MIN_BLOCK_SIZE;
1059 blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) {
1060 if (*ret_fs) {
1061 ext2fs_free(*ret_fs);
1062 *ret_fs = NULL;
1063 }
1064 retval = ext2fs_open2(ctx->filesystem_name,
1065 ctx->io_options, flags,
1066 ctx->superblock, blocksize,
1067 io_ptr, ret_fs);
1068 if (!retval)
1069 break;
1070 }
1071 } else
1072 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1073 flags, 0, 0, io_ptr, ret_fs);
1074
1075 if (retval == 0) {
1076 (*ret_fs)->priv_data = ctx;
1077 e2fsck_set_bitmap_type(*ret_fs, EXT2FS_BMAP64_RBTREE,
1078 "default", NULL);
1079 }
1080 return retval;
1081 }
1082
1083 static const char *my_ver_string = E2FSPROGS_VERSION;
1084 static const char *my_ver_date = E2FSPROGS_DATE;
1085
1086 static errcode_t e2fsck_check_mmp(ext2_filsys fs, e2fsck_t ctx)
1087 {
1088 struct mmp_struct *mmp_s;
1089 unsigned int mmp_check_interval;
1090 errcode_t retval = 0;
1091 struct problem_context pctx;
1092 unsigned int wait_time = 0;
1093
1094 clear_problem_context(&pctx);
1095 if (fs->mmp_buf == NULL) {
1096 retval = ext2fs_get_mem(fs->blocksize, &fs->mmp_buf);
1097 if (retval)
1098 goto check_error;
1099 }
1100
1101 retval = ext2fs_mmp_read(fs, fs->super->s_mmp_block, fs->mmp_buf);
1102 if (retval)
1103 goto check_error;
1104
1105 mmp_s = fs->mmp_buf;
1106
1107 mmp_check_interval = fs->super->s_mmp_update_interval;
1108 if (mmp_check_interval < EXT4_MMP_MIN_CHECK_INTERVAL)
1109 mmp_check_interval = EXT4_MMP_MIN_CHECK_INTERVAL;
1110
1111 /*
1112 * If check_interval in MMP block is larger, use that instead of
1113 * check_interval from the superblock.
1114 */
1115 if (mmp_s->mmp_check_interval > mmp_check_interval)
1116 mmp_check_interval = mmp_s->mmp_check_interval;
1117
1118 wait_time = mmp_check_interval * 2 + 1;
1119
1120 if (mmp_s->mmp_seq == EXT4_MMP_SEQ_CLEAN)
1121 retval = 0;
1122 else if (mmp_s->mmp_seq == EXT4_MMP_SEQ_FSCK)
1123 retval = EXT2_ET_MMP_FSCK_ON;
1124 else if (mmp_s->mmp_seq > EXT4_MMP_SEQ_MAX)
1125 retval = EXT2_ET_MMP_UNKNOWN_SEQ;
1126
1127 if (retval)
1128 goto check_error;
1129
1130 /* Print warning if e2fck will wait for more than 20 secs. */
1131 if (verbose || wait_time > EXT4_MMP_MIN_CHECK_INTERVAL * 4) {
1132 log_out(ctx, _("MMP interval is %u seconds and total wait "
1133 "time is %u seconds. Please wait...\n"),
1134 mmp_check_interval, wait_time * 2);
1135 }
1136
1137 return 0;
1138
1139 check_error:
1140
1141 if (retval == EXT2_ET_MMP_BAD_BLOCK) {
1142 if (fix_problem(ctx, PR_0_MMP_INVALID_BLK, &pctx)) {
1143 fs->super->s_mmp_block = 0;
1144 ext2fs_mark_super_dirty(fs);
1145 retval = 0;
1146 }
1147 } else if (retval == EXT2_ET_MMP_FAILED) {
1148 com_err(ctx->program_name, retval, "%s",
1149 _("while checking MMP block"));
1150 dump_mmp_msg(fs->mmp_buf, NULL);
1151 } else if (retval == EXT2_ET_MMP_FSCK_ON ||
1152 retval == EXT2_ET_MMP_UNKNOWN_SEQ) {
1153 com_err(ctx->program_name, retval, "%s",
1154 _("while checking MMP block"));
1155 dump_mmp_msg(fs->mmp_buf,
1156 _("If you are sure the filesystem is not "
1157 "in use on any node, run:\n"
1158 "'tune2fs -f -E clear_mmp {device}'\n"));
1159 } else if (retval == EXT2_ET_MMP_MAGIC_INVALID) {
1160 if (fix_problem(ctx, PR_0_MMP_INVALID_MAGIC, &pctx)) {
1161 ext2fs_mmp_clear(fs);
1162 retval = 0;
1163 }
1164 } else if (retval == EXT2_ET_MMP_CSUM_INVALID) {
1165 if (fix_problem(ctx, PR_0_MMP_CSUM_INVALID, &pctx)) {
1166 ext2fs_mmp_clear(fs);
1167 retval = 0;
1168 }
1169 } else
1170 com_err(ctx->program_name, retval, "%s",
1171 _("while reading MMP block"));
1172 return retval;
1173 }
1174
1175 int main (int argc, char *argv[])
1176 {
1177 errcode_t retval = 0, retval2 = 0, orig_retval = 0;
1178 int exit_value = FSCK_OK;
1179 ext2_filsys fs = 0;
1180 io_manager io_ptr;
1181 struct ext2_super_block *sb;
1182 const char *lib_ver_date;
1183 int my_ver, lib_ver;
1184 e2fsck_t ctx;
1185 blk64_t orig_superblock;
1186 struct problem_context pctx;
1187 int flags, run_result, was_changed;
1188 int journal_size;
1189 int sysval, sys_page_size = 4096;
1190 int old_bitmaps;
1191 __u32 features[3];
1192 char *cp;
1193 int qtype = -99; /* quota type */
1194
1195 clear_problem_context(&pctx);
1196 sigcatcher_setup();
1197 #ifdef MTRACE
1198 mtrace();
1199 #endif
1200 #ifdef MCHECK
1201 mcheck(0);
1202 #endif
1203 #ifdef ENABLE_NLS
1204 setlocale(LC_MESSAGES, "");
1205 setlocale(LC_CTYPE, "");
1206 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1207 textdomain(NLS_CAT_NAME);
1208 set_com_err_gettext(gettext);
1209 #endif
1210 my_ver = ext2fs_parse_version_string(my_ver_string);
1211 lib_ver = ext2fs_get_library_version(0, &lib_ver_date);
1212 if (my_ver > lib_ver) {
1213 fprintf( stderr, "%s",
1214 _("Error: ext2fs library version out of date!\n"));
1215 show_version_only++;
1216 }
1217
1218 retval = PRS(argc, argv, &ctx);
1219 if (retval) {
1220 com_err("e2fsck", retval, "%s",
1221 _("while trying to initialize program"));
1222 exit(FSCK_ERROR);
1223 }
1224 reserve_stdio_fds();
1225
1226 set_up_logging(ctx);
1227 if (ctx->logf) {
1228 int i;
1229 fputs("E2fsck run: ", ctx->logf);
1230 for (i = 0; i < argc; i++) {
1231 if (i)
1232 fputc(' ', ctx->logf);
1233 fputs(argv[i], ctx->logf);
1234 }
1235 fputc('\n', ctx->logf);
1236 }
1237
1238 init_resource_track(&ctx->global_rtrack, NULL);
1239 if (!(ctx->options & E2F_OPT_PREEN) || show_version_only)
1240 log_err(ctx, "e2fsck %s (%s)\n", my_ver_string,
1241 my_ver_date);
1242
1243 if (show_version_only) {
1244 log_err(ctx, _("\tUsing %s, %s\n"),
1245 error_message(EXT2_ET_BASE), lib_ver_date);
1246 exit(FSCK_OK);
1247 }
1248
1249 check_mount(ctx);
1250
1251 if (!(ctx->options & E2F_OPT_PREEN) &&
1252 !(ctx->options & E2F_OPT_NO) &&
1253 !(ctx->options & E2F_OPT_YES)) {
1254 if (!ctx->interactive)
1255 fatal_error(ctx,
1256 _("need terminal for interactive repairs"));
1257 }
1258 ctx->superblock = ctx->use_superblock;
1259
1260 flags = EXT2_FLAG_SKIP_MMP;
1261 restart:
1262 #ifdef CONFIG_TESTIO_DEBUG
1263 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1264 io_ptr = test_io_manager;
1265 test_io_backing_manager = unix_io_manager;
1266 } else
1267 #endif
1268 io_ptr = unix_io_manager;
1269 flags |= EXT2_FLAG_NOFREE_ON_ERROR;
1270 profile_get_boolean(ctx->profile, "options", "old_bitmaps", 0, 0,
1271 &old_bitmaps);
1272 if (!old_bitmaps)
1273 flags |= EXT2_FLAG_64BITS;
1274 if ((ctx->options & E2F_OPT_READONLY) == 0) {
1275 flags |= EXT2_FLAG_RW;
1276 if (!(ctx->mount_flags & EXT2_MF_ISROOT &&
1277 ctx->mount_flags & EXT2_MF_READONLY))
1278 flags |= EXT2_FLAG_EXCLUSIVE;
1279 if ((ctx->mount_flags & EXT2_MF_READONLY) &&
1280 (ctx->options & E2F_OPT_FORCE))
1281 flags &= ~EXT2_FLAG_EXCLUSIVE;
1282 }
1283
1284 ctx->openfs_flags = flags;
1285 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1286
1287 if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) &&
1288 !(ctx->flags & E2F_FLAG_SB_SPECIFIED) &&
1289 ((retval == EXT2_ET_BAD_MAGIC) ||
1290 (retval == EXT2_ET_SB_CSUM_INVALID) ||
1291 (retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
1292 ((retval == 0) && (retval2 = ext2fs_check_desc(fs))))) {
1293 if (retval) {
1294 pctx.errcode = retval;
1295 fix_problem(ctx, PR_0_OPEN_FAILED, &pctx);
1296 }
1297 if (retval2) {
1298 pctx.errcode = retval2;
1299 fix_problem(ctx, PR_0_CHECK_DESC_FAILED, &pctx);
1300 }
1301 pctx.errcode = 0;
1302 if (retval2 == ENOMEM || retval2 == EXT2_ET_NO_MEMORY) {
1303 retval = retval2;
1304 goto failure;
1305 }
1306 if (fs->flags & EXT2_FLAG_NOFREE_ON_ERROR) {
1307 ext2fs_free(fs);
1308 fs = NULL;
1309 }
1310 if (!fs || (fs->group_desc_count > 1)) {
1311 log_out(ctx, _("%s: %s trying backup blocks...\n"),
1312 ctx->program_name,
1313 retval ? _("Superblock invalid,") :
1314 _("Group descriptors look bad..."));
1315 orig_superblock = ctx->superblock;
1316 get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr);
1317 if (fs)
1318 ext2fs_close_free(&fs);
1319 orig_retval = retval;
1320 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1321 if ((orig_retval == 0) && retval != 0) {
1322 if (fs)
1323 ext2fs_close_free(&fs);
1324 log_out(ctx, _("%s: %s while using the "
1325 "backup blocks"),
1326 ctx->program_name,
1327 error_message(retval));
1328 log_out(ctx, _("%s: going back to original "
1329 "superblock\n"),
1330 ctx->program_name);
1331 ctx->superblock = orig_superblock;
1332 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1333 }
1334 }
1335 }
1336 if (((retval == EXT2_ET_UNSUPP_FEATURE) ||
1337 (retval == EXT2_ET_RO_UNSUPP_FEATURE)) &&
1338 fs && fs->super) {
1339 sb = fs->super;
1340 features[0] = (sb->s_feature_compat &
1341 ~EXT2_LIB_FEATURE_COMPAT_SUPP);
1342 features[1] = (sb->s_feature_incompat &
1343 ~EXT2_LIB_FEATURE_INCOMPAT_SUPP);
1344 features[2] = (sb->s_feature_ro_compat &
1345 ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1346 if (features[0] || features[1] || features[2])
1347 goto print_unsupp_features;
1348 }
1349 failure:
1350 if (retval) {
1351 if (orig_retval)
1352 retval = orig_retval;
1353 com_err(ctx->program_name, retval, _("while trying to open %s"),
1354 ctx->filesystem_name);
1355 if (retval == EXT2_ET_REV_TOO_HIGH) {
1356 log_out(ctx, "%s",
1357 _("The filesystem revision is apparently "
1358 "too high for this version of e2fsck.\n"
1359 "(Or the filesystem superblock "
1360 "is corrupt)\n\n"));
1361 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1362 } else if (retval == EXT2_ET_SHORT_READ)
1363 log_out(ctx, "%s",
1364 _("Could this be a zero-length partition?\n"));
1365 else if ((retval == EPERM) || (retval == EACCES))
1366 log_out(ctx, _("You must have %s access to the "
1367 "filesystem or be root\n"),
1368 (ctx->options & E2F_OPT_READONLY) ?
1369 "r/o" : "r/w");
1370 else if (retval == ENXIO)
1371 log_out(ctx, "%s",
1372 _("Possibly non-existent or swap device?\n"));
1373 else if (retval == EBUSY)
1374 log_out(ctx, "%s", _("Filesystem mounted or opened "
1375 "exclusively by another program?\n"));
1376 else if (retval == ENOENT)
1377 log_out(ctx, "%s",
1378 _("Possibly non-existent device?\n"));
1379 #ifdef EROFS
1380 else if (retval == EROFS)
1381 log_out(ctx, "%s", _("Disk write-protected; use the "
1382 "-n option to do a read-only\n"
1383 "check of the device.\n"));
1384 #endif
1385 else
1386 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1387 fatal_error(ctx, 0);
1388 }
1389 /*
1390 * We only update the master superblock because (a) paranoia;
1391 * we don't want to corrupt the backup superblocks, and (b) we
1392 * don't need to update the mount count and last checked
1393 * fields in the backup superblock (the kernel doesn't update
1394 * the backup superblocks anyway). With newer versions of the
1395 * library this flag is set by ext2fs_open2(), but we set this
1396 * here just to be sure. (No, we don't support e2fsck running
1397 * with some other libext2fs than the one that it was shipped
1398 * with, but just in case....)
1399 */
1400 fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
1401
1402 if (!(ctx->flags & E2F_FLAG_GOT_DEVSIZE)) {
1403 __u32 blocksize = EXT2_BLOCK_SIZE(fs->super);
1404 int need_restart = 0;
1405
1406 pctx.errcode = ext2fs_get_device_size2(ctx->filesystem_name,
1407 blocksize,
1408 &ctx->num_blocks);
1409 /*
1410 * The floppy driver refuses to allow anyone else to
1411 * open the device if has been opened with O_EXCL;
1412 * this is unlike other block device drivers in Linux.
1413 * To handle this, we close the filesystem and then
1414 * reopen the filesystem after we get the device size.
1415 */
1416 if (pctx.errcode == EBUSY) {
1417 ext2fs_close_free(&fs);
1418 need_restart++;
1419 pctx.errcode =
1420 ext2fs_get_device_size2(ctx->filesystem_name,
1421 blocksize,
1422 &ctx->num_blocks);
1423 }
1424 if (pctx.errcode == EXT2_ET_UNIMPLEMENTED)
1425 ctx->num_blocks = 0;
1426 else if (pctx.errcode) {
1427 fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx);
1428 ctx->flags |= E2F_FLAG_ABORT;
1429 fatal_error(ctx, 0);
1430 }
1431 ctx->flags |= E2F_FLAG_GOT_DEVSIZE;
1432 if (need_restart)
1433 goto restart;
1434 }
1435
1436 ctx->fs = fs;
1437 fs->now = ctx->now;
1438 sb = fs->super;
1439
1440 if (sb->s_rev_level > E2FSCK_CURRENT_REV) {
1441 com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH,
1442 _("while trying to open %s"),
1443 ctx->filesystem_name);
1444 get_newer:
1445 fatal_error(ctx, _("Get a newer version of e2fsck!"));
1446 }
1447
1448 /*
1449 * Set the device name, which is used whenever we print error
1450 * or informational messages to the user.
1451 */
1452 if (ctx->device_name == 0 &&
1453 (sb->s_volume_name[0] != 0)) {
1454 ctx->device_name = string_copy(ctx, sb->s_volume_name,
1455 sizeof(sb->s_volume_name));
1456 }
1457 if (ctx->device_name == 0)
1458 ctx->device_name = string_copy(ctx, ctx->filesystem_name, 0);
1459 for (cp = ctx->device_name; *cp; cp++)
1460 if (isspace(*cp) || *cp == ':')
1461 *cp = '_';
1462
1463 ehandler_init(fs->io);
1464
1465 if ((fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_MMP) &&
1466 (flags & EXT2_FLAG_SKIP_MMP)) {
1467 if (e2fsck_check_mmp(fs, ctx))
1468 fatal_error(ctx, 0);
1469
1470 /*
1471 * Restart in order to reopen fs but this time start mmp.
1472 */
1473 ext2fs_close_free(&fs);
1474 flags &= ~EXT2_FLAG_SKIP_MMP;
1475 goto restart;
1476 }
1477
1478 if (ctx->logf)
1479 fprintf(ctx->logf, "Filesystem UUID: %s\n",
1480 e2p_uuid2str(sb->s_uuid));
1481
1482 /*
1483 * Make sure the ext3 superblock fields are consistent.
1484 */
1485 retval = e2fsck_check_ext3_journal(ctx);
1486 if (retval) {
1487 com_err(ctx->program_name, retval,
1488 _("while checking ext3 journal for %s"),
1489 ctx->device_name);
1490 fatal_error(ctx, 0);
1491 }
1492
1493 /*
1494 * Check to see if we need to do ext3-style recovery. If so,
1495 * do it, and then restart the fsck.
1496 */
1497 if (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) {
1498 if (ctx->options & E2F_OPT_READONLY) {
1499 log_out(ctx, "%s",
1500 _("Warning: skipping journal recovery because "
1501 "doing a read-only filesystem check.\n"));
1502 io_channel_flush(ctx->fs->io);
1503 } else {
1504 if (ctx->flags & E2F_FLAG_RESTARTED) {
1505 /*
1506 * Whoops, we attempted to run the
1507 * journal twice. This should never
1508 * happen, unless the hardware or
1509 * device driver is being bogus.
1510 */
1511 com_err(ctx->program_name, 0,
1512 _("unable to set superblock flags "
1513 "on %s\n"), ctx->device_name);
1514 fatal_error(ctx, 0);
1515 }
1516 retval = e2fsck_run_ext3_journal(ctx);
1517 if (retval) {
1518 com_err(ctx->program_name, retval,
1519 _("while recovering ext3 journal of %s"),
1520 ctx->device_name);
1521 fatal_error(ctx, 0);
1522 }
1523 ext2fs_close_free(&ctx->fs);
1524 ctx->flags |= E2F_FLAG_RESTARTED;
1525 goto restart;
1526 }
1527 }
1528
1529 /*
1530 * Check for compatibility with the feature sets. We need to
1531 * be more stringent than ext2fs_open().
1532 */
1533 features[0] = sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP;
1534 features[1] = sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP;
1535 features[2] = (sb->s_feature_ro_compat &
1536 ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1537 print_unsupp_features:
1538 if (features[0] || features[1] || features[2]) {
1539 int i, j;
1540 __u32 *mask = features, m;
1541
1542 log_err(ctx, _("%s has unsupported feature(s):"),
1543 ctx->filesystem_name);
1544
1545 for (i=0; i <3; i++,mask++) {
1546 for (j=0,m=1; j < 32; j++, m<<=1) {
1547 if (*mask & m)
1548 log_err(ctx, " %s",
1549 e2p_feature2string(i, m));
1550 }
1551 }
1552 log_err(ctx, "\n");
1553 goto get_newer;
1554 }
1555 #ifdef ENABLE_COMPRESSION
1556 if (sb->s_feature_incompat & EXT2_FEATURE_INCOMPAT_COMPRESSION)
1557 log_err(ctx, _("%s: warning: compression support "
1558 "is experimental.\n"),
1559 ctx->program_name);
1560 #endif
1561 #ifndef ENABLE_HTREE
1562 if (sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) {
1563 log_err(ctx, _("%s: e2fsck not compiled with HTREE support,\n\t"
1564 "but filesystem %s has HTREE directories.\n"),
1565 ctx->program_name, ctx->device_name);
1566 goto get_newer;
1567 }
1568 #endif
1569
1570 /*
1571 * If the user specified a specific superblock, presumably the
1572 * master superblock has been trashed. So we mark the
1573 * superblock as dirty, so it can be written out.
1574 */
1575 if (ctx->superblock &&
1576 !(ctx->options & E2F_OPT_READONLY))
1577 ext2fs_mark_super_dirty(fs);
1578
1579 /*
1580 * Calculate the number of filesystem blocks per pagesize. If
1581 * fs->blocksize > page_size, set the number of blocks per
1582 * pagesize to 1 to avoid division by zero errors.
1583 */
1584 #ifdef _SC_PAGESIZE
1585 sysval = sysconf(_SC_PAGESIZE);
1586 if (sysval > 0)
1587 sys_page_size = sysval;
1588 #endif /* _SC_PAGESIZE */
1589 ctx->blocks_per_page = sys_page_size / fs->blocksize;
1590 if (ctx->blocks_per_page == 0)
1591 ctx->blocks_per_page = 1;
1592
1593 if (ctx->superblock)
1594 set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0);
1595 ext2fs_mark_valid(fs);
1596 check_super_block(ctx);
1597 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1598 fatal_error(ctx, 0);
1599 check_if_skip(ctx);
1600 check_resize_inode(ctx);
1601 if (bad_blocks_file)
1602 read_bad_blocks_file(ctx, bad_blocks_file, replace_bad_blocks);
1603 else if (cflag)
1604 read_bad_blocks_file(ctx, 0, !keep_bad_blocks); /* Test disk */
1605 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1606 fatal_error(ctx, 0);
1607
1608 /*
1609 * Mark the system as valid, 'til proven otherwise
1610 */
1611 ext2fs_mark_valid(fs);
1612
1613 retval = ext2fs_read_bb_inode(fs, &fs->badblocks);
1614 if (retval) {
1615 log_out(ctx, _("%s: %s while reading bad blocks inode\n"),
1616 ctx->program_name, error_message(retval));
1617 preenhalt(ctx);
1618 log_out(ctx, "%s", _("This doesn't bode well, "
1619 "but we'll try to go on...\n"));
1620 }
1621
1622 /*
1623 * Save the journal size in megabytes.
1624 * Try and use the journal size from the backup else let e2fsck
1625 * find the default journal size.
1626 */
1627 if (sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS)
1628 journal_size = (sb->s_jnl_blocks[15] << (32 - 20)) |
1629 (sb->s_jnl_blocks[16] >> 20);
1630 else
1631 journal_size = -1;
1632
1633 if (sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_QUOTA) {
1634 /* Quotas were enabled. Do quota accounting during fsck. */
1635 if ((sb->s_usr_quota_inum && sb->s_grp_quota_inum) ||
1636 (!sb->s_usr_quota_inum && !sb->s_grp_quota_inum))
1637 qtype = -1;
1638 else
1639 qtype = sb->s_usr_quota_inum ? USRQUOTA : GRPQUOTA;
1640
1641 quota_init_context(&ctx->qctx, ctx->fs, qtype);
1642 }
1643
1644 run_result = e2fsck_run(ctx);
1645 e2fsck_clear_progbar(ctx);
1646
1647 if (!ctx->invalid_bitmaps &&
1648 (ctx->flags & E2F_FLAG_JOURNAL_INODE)) {
1649 if (fix_problem(ctx, PR_6_RECREATE_JOURNAL, &pctx)) {
1650 if (journal_size < 1024)
1651 journal_size = ext2fs_default_journal_size(ext2fs_blocks_count(fs->super));
1652 if (journal_size < 0) {
1653 fs->super->s_feature_compat &=
1654 ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
1655 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1656 log_out(ctx, "%s: Couldn't determine "
1657 "journal size\n", ctx->program_name);
1658 goto no_journal;
1659 }
1660 log_out(ctx, _("Creating journal (%d blocks): "),
1661 journal_size);
1662 fflush(stdout);
1663 retval = ext2fs_add_journal_inode(fs,
1664 journal_size, 0);
1665 if (retval) {
1666 log_out(ctx, "%s: while trying to create "
1667 "journal\n", error_message(retval));
1668 goto no_journal;
1669 }
1670 log_out(ctx, "%s", _(" Done.\n"));
1671 log_out(ctx, "%s",
1672 _("\n*** journal has been re-created - "
1673 "filesystem is now ext3 again ***\n"));
1674 }
1675 }
1676 no_journal:
1677
1678 if (ctx->qctx) {
1679 int i, needs_writeout;
1680 for (i = 0; i < MAXQUOTAS; i++) {
1681 if (qtype != -1 && qtype != i)
1682 continue;
1683 needs_writeout = 0;
1684 pctx.num = i;
1685 retval = quota_compare_and_update(ctx->qctx, i,
1686 &needs_writeout);
1687 if ((retval || needs_writeout) &&
1688 fix_problem(ctx, PR_6_UPDATE_QUOTAS, &pctx))
1689 quota_write_inode(ctx->qctx, i);
1690 }
1691 quota_release_context(&ctx->qctx);
1692 }
1693
1694 if (run_result == E2F_FLAG_RESTART) {
1695 log_out(ctx, "%s",
1696 _("Restarting e2fsck from the beginning...\n"));
1697 retval = e2fsck_reset_context(ctx);
1698 if (retval) {
1699 com_err(ctx->program_name, retval, "%s",
1700 _("while resetting context"));
1701 fatal_error(ctx, 0);
1702 }
1703 ext2fs_close_free(&fs);
1704 goto restart;
1705 }
1706 if (run_result & E2F_FLAG_ABORT)
1707 fatal_error(ctx, _("aborted"));
1708
1709 #ifdef MTRACE
1710 mtrace_print("Cleanup");
1711 #endif
1712 was_changed = ext2fs_test_changed(fs);
1713 if (run_result & E2F_FLAG_CANCEL) {
1714 log_out(ctx, _("%s: e2fsck canceled.\n"), ctx->device_name ?
1715 ctx->device_name : ctx->filesystem_name);
1716 exit_value |= FSCK_CANCELED;
1717 } else if (!(ctx->options & E2F_OPT_READONLY)) {
1718 if (ext2fs_test_valid(fs)) {
1719 if (!(sb->s_state & EXT2_VALID_FS))
1720 exit_value |= FSCK_NONDESTRUCT;
1721 sb->s_state = EXT2_VALID_FS;
1722 if (check_backup_super_block(ctx))
1723 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1724 } else
1725 sb->s_state &= ~EXT2_VALID_FS;
1726 if (!(ctx->flags & E2F_FLAG_TIME_INSANE))
1727 sb->s_lastcheck = ctx->now;
1728 sb->s_mnt_count = 0;
1729 memset(((char *) sb) + EXT4_S_ERR_START, 0, EXT4_S_ERR_LEN);
1730 pctx.errcode = ext2fs_set_gdt_csum(ctx->fs);
1731 if (pctx.errcode)
1732 fix_problem(ctx, PR_6_SET_BG_CHECKSUM, &pctx);
1733 ext2fs_mark_super_dirty(fs);
1734 }
1735
1736 e2fsck_write_bitmaps(ctx);
1737 if (fs->flags & EXT2_FLAG_DIRTY) {
1738 pctx.errcode = ext2fs_flush(ctx->fs);
1739 if (pctx.errcode)
1740 fix_problem(ctx, PR_6_FLUSH_FILESYSTEM, &pctx);
1741 }
1742 pctx.errcode = io_channel_flush(ctx->fs->io);
1743 if (pctx.errcode)
1744 fix_problem(ctx, PR_6_IO_FLUSH, &pctx);
1745
1746 if (was_changed) {
1747 exit_value |= FSCK_NONDESTRUCT;
1748 if (!(ctx->options & E2F_OPT_PREEN))
1749 log_out(ctx, _("\n%s: ***** FILE SYSTEM WAS "
1750 "MODIFIED *****\n"),
1751 ctx->device_name);
1752 if (ctx->mount_flags & EXT2_MF_ISROOT) {
1753 log_out(ctx, _("%s: ***** REBOOT LINUX *****\n"),
1754 ctx->device_name);
1755 exit_value |= FSCK_REBOOT;
1756 }
1757 }
1758 if (!ext2fs_test_valid(fs) ||
1759 ((exit_value & FSCK_CANCELED) &&
1760 (sb->s_state & EXT2_ERROR_FS))) {
1761 log_out(ctx, _("\n%s: ********** WARNING: Filesystem still has "
1762 "errors **********\n\n"), ctx->device_name);
1763 exit_value |= FSCK_UNCORRECTED;
1764 exit_value &= ~FSCK_NONDESTRUCT;
1765 }
1766 if (exit_value & FSCK_CANCELED) {
1767 int allow_cancellation;
1768
1769 profile_get_boolean(ctx->profile, "options",
1770 "allow_cancellation", 0, 0,
1771 &allow_cancellation);
1772 exit_value &= ~FSCK_NONDESTRUCT;
1773 if (allow_cancellation && ext2fs_test_valid(fs) &&
1774 (sb->s_state & EXT2_VALID_FS) &&
1775 !(sb->s_state & EXT2_ERROR_FS))
1776 exit_value = 0;
1777 } else
1778 show_stats(ctx);
1779
1780 print_resource_track(ctx, NULL, &ctx->global_rtrack, ctx->fs->io);
1781
1782 ext2fs_close_free(&ctx->fs);
1783 free(ctx->journal_name);
1784
1785 e2fsck_free_context(ctx);
1786 remove_error_table(&et_ext2_error_table);
1787 remove_error_table(&et_prof_error_table);
1788 return exit_value;
1789 }
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