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 #include <libgen.h>
49
50 #include "e2p/e2p.h"
51 #include "et/com_err.h"
52 #include "e2p/e2p.h"
53 #include "uuid/uuid.h"
54 #include "support/plausible.h"
55 #include "support/devname.h"
56 #include "e2fsck.h"
57 #include "problem.h"
58 #include "jfs_user.h"
59 #include "../version.h"
60
61 /* Command line options */
62 static int cflag; /* check disk */
63 static int show_version_only;
64 static int verbose;
65
66 static int replace_bad_blocks;
67 static int keep_bad_blocks;
68 static char *bad_blocks_file;
69
70 e2fsck_t e2fsck_global_ctx; /* Try your very best not to use this! */
71
72 #ifdef CONFIG_JBD_DEBUG /* Enabled by configure --enable-jbd-debug */
73 int journal_enable_debug = -1;
74 #endif
75
usage(e2fsck_t ctx)76 static void usage(e2fsck_t ctx)
77 {
78 fprintf(stderr,
79 _("Usage: %s [-panyrcdfktvDFV] [-b superblock] [-B blocksize]\n"
80 "\t\t[-l|-L bad_blocks_file] [-C fd] [-j external_journal]\n"
81 "\t\t[-E extended-options] [-z undo_file] device\n"),
82 ctx->program_name ? ctx->program_name : "e2fsck");
83
84 fprintf(stderr, "%s", _("\nEmergency help:\n"
85 " -p Automatic repair (no questions)\n"
86 " -n Make no changes to the filesystem\n"
87 " -y Assume \"yes\" to all questions\n"
88 " -c Check for bad blocks and add them to the badblock list\n"
89 " -f Force checking even if filesystem is marked clean\n"));
90 fprintf(stderr, "%s", _(""
91 " -v Be verbose\n"
92 " -b superblock Use alternative superblock\n"
93 " -B blocksize Force blocksize when looking for superblock\n"
94 " -j external_journal Set location of the external journal\n"
95 " -l bad_blocks_file Add to badblocks list\n"
96 " -L bad_blocks_file Set badblocks list\n"
97 " -z undo_file Create an undo file\n"
98 ));
99
100 exit(FSCK_USAGE);
101 }
102
show_stats(e2fsck_t ctx)103 static void show_stats(e2fsck_t ctx)
104 {
105 ext2_filsys fs = ctx->fs;
106 ext2_ino_t inodes, inodes_used;
107 blk64_t blocks, blocks_used;
108 unsigned int dir_links;
109 unsigned int num_files, num_links;
110 __u32 *mask, m;
111 int frag_percent_file = 0, frag_percent_dir = 0, frag_percent_total = 0;
112 int i, j, printed = 0;
113
114 dir_links = 2 * ctx->fs_directory_count - 1;
115 num_files = ctx->fs_total_count - dir_links;
116 num_links = ctx->fs_links_count - dir_links;
117 inodes = fs->super->s_inodes_count;
118 inodes_used = (fs->super->s_inodes_count -
119 fs->super->s_free_inodes_count);
120 blocks = ext2fs_blocks_count(fs->super);
121 blocks_used = (ext2fs_blocks_count(fs->super) -
122 ext2fs_free_blocks_count(fs->super));
123
124 if (inodes_used > 0) {
125 frag_percent_file = (10000 * ctx->fs_fragmented) / inodes_used;
126 frag_percent_file = (frag_percent_file + 5) / 10;
127
128 frag_percent_dir = (10000 * ctx->fs_fragmented_dir) / inodes_used;
129 frag_percent_dir = (frag_percent_dir + 5) / 10;
130
131 frag_percent_total = ((10000 * (ctx->fs_fragmented +
132 ctx->fs_fragmented_dir))
133 / inodes_used);
134 frag_percent_total = (frag_percent_total + 5) / 10;
135 }
136
137 if (!verbose) {
138 log_out(ctx, _("%s: %u/%u files (%0d.%d%% non-contiguous), "
139 "%llu/%llu blocks\n"),
140 ctx->device_name, inodes_used, inodes,
141 frag_percent_total / 10, frag_percent_total % 10,
142 (unsigned long long) blocks_used,
143 (unsigned long long) blocks);
144 return;
145 }
146 profile_get_boolean(ctx->profile, "options", "report_features", 0, 0,
147 &i);
148 if (verbose && i) {
149 log_out(ctx, "\nFilesystem features:");
150 mask = &ctx->fs->super->s_feature_compat;
151 for (i = 0; i < 3; i++, mask++) {
152 for (j = 0, m = 1; j < 32; j++, m <<= 1) {
153 if (*mask & m) {
154 log_out(ctx, " %s",
155 e2p_feature2string(i, m));
156 printed++;
157 }
158 }
159 }
160 if (printed == 0)
161 log_out(ctx, " (none)");
162 log_out(ctx, "\n");
163 }
164
165 log_out(ctx, P_("\n%12u inode used (%2.2f%%, out of %u)\n",
166 "\n%12u inodes used (%2.2f%%, out of %u)\n",
167 inodes_used), inodes_used,
168 100.0 * inodes_used / inodes, inodes);
169 log_out(ctx, P_("%12u non-contiguous file (%0d.%d%%)\n",
170 "%12u non-contiguous files (%0d.%d%%)\n",
171 ctx->fs_fragmented),
172 ctx->fs_fragmented, frag_percent_file / 10,
173 frag_percent_file % 10);
174 log_out(ctx, P_("%12u non-contiguous directory (%0d.%d%%)\n",
175 "%12u non-contiguous directories (%0d.%d%%)\n",
176 ctx->fs_fragmented_dir),
177 ctx->fs_fragmented_dir, frag_percent_dir / 10,
178 frag_percent_dir % 10);
179 log_out(ctx, _(" # of inodes with ind/dind/tind blocks: "
180 "%u/%u/%u\n"),
181 ctx->fs_ind_count, ctx->fs_dind_count, ctx->fs_tind_count);
182
183 for (j=MAX_EXTENT_DEPTH_COUNT-1; j >=0; j--)
184 if (ctx->extent_depth_count[j])
185 break;
186 if (++j) {
187 log_out(ctx, "%s", _(" Extent depth histogram: "));
188 for (i=0; i < j; i++) {
189 if (i)
190 fputc('/', stdout);
191 log_out(ctx, "%u", ctx->extent_depth_count[i]);
192 }
193 log_out(ctx, "\n");
194 }
195
196 log_out(ctx, P_("%12llu block used (%2.2f%%, out of %llu)\n",
197 "%12llu blocks used (%2.2f%%, out of %llu)\n",
198 blocks_used),
199 (unsigned long long) blocks_used, 100.0 * blocks_used / blocks,
200 (unsigned long long) blocks);
201 log_out(ctx, P_("%12u bad block\n", "%12u bad blocks\n",
202 ctx->fs_badblocks_count), ctx->fs_badblocks_count);
203 log_out(ctx, P_("%12u large file\n", "%12u large files\n",
204 ctx->large_files), ctx->large_files);
205 log_out(ctx, P_("\n%12u regular file\n", "\n%12u regular files\n",
206 ctx->fs_regular_count), ctx->fs_regular_count);
207 log_out(ctx, P_("%12u directory\n", "%12u directories\n",
208 ctx->fs_directory_count), ctx->fs_directory_count);
209 log_out(ctx, P_("%12u character device file\n",
210 "%12u character device files\n", ctx->fs_chardev_count),
211 ctx->fs_chardev_count);
212 log_out(ctx, P_("%12u block device file\n", "%12u block device files\n",
213 ctx->fs_blockdev_count), ctx->fs_blockdev_count);
214 log_out(ctx, P_("%12u fifo\n", "%12u fifos\n", ctx->fs_fifo_count),
215 ctx->fs_fifo_count);
216 log_out(ctx, P_("%12u link\n", "%12u links\n", num_links),
217 ctx->fs_links_count - dir_links);
218 log_out(ctx, P_("%12u symbolic link", "%12u symbolic links",
219 ctx->fs_symlinks_count), ctx->fs_symlinks_count);
220 log_out(ctx, P_(" (%u fast symbolic link)\n",
221 " (%u fast symbolic links)\n",
222 ctx->fs_fast_symlinks_count),
223 ctx->fs_fast_symlinks_count);
224 log_out(ctx, P_("%12u socket\n", "%12u sockets\n",
225 ctx->fs_sockets_count),
226 ctx->fs_sockets_count);
227 log_out(ctx, "------------\n");
228 log_out(ctx, P_("%12u file\n", "%12u files\n", num_files),
229 num_files);
230 }
231
check_mount(e2fsck_t ctx)232 static void check_mount(e2fsck_t ctx)
233 {
234 errcode_t retval;
235 int cont;
236
237 retval = ext2fs_check_if_mounted(ctx->filesystem_name,
238 &ctx->mount_flags);
239 if (retval) {
240 com_err("ext2fs_check_if_mount", retval,
241 _("while determining whether %s is mounted."),
242 ctx->filesystem_name);
243 return;
244 }
245
246 /*
247 * If the filesystem isn't mounted, or it's the root
248 * filesystem and it's mounted read-only, and we're not doing
249 * a read/write check, then everything's fine.
250 */
251 if ((!(ctx->mount_flags & (EXT2_MF_MOUNTED | EXT2_MF_BUSY))) ||
252 ((ctx->mount_flags & EXT2_MF_ISROOT) &&
253 (ctx->mount_flags & EXT2_MF_READONLY) &&
254 !(ctx->options & E2F_OPT_WRITECHECK)))
255 return;
256
257 if (((ctx->options & E2F_OPT_READONLY) ||
258 ((ctx->options & E2F_OPT_FORCE) &&
259 (ctx->mount_flags & EXT2_MF_READONLY))) &&
260 !(ctx->options & E2F_OPT_WRITECHECK)) {
261 if (ctx->mount_flags & EXT2_MF_MOUNTED)
262 log_out(ctx, _("Warning! %s is mounted.\n"),
263 ctx->filesystem_name);
264 else
265 log_out(ctx, _("Warning! %s is in use.\n"),
266 ctx->filesystem_name);
267 return;
268 }
269
270 if (ctx->mount_flags & EXT2_MF_MOUNTED)
271 log_out(ctx, _("%s is mounted.\n"), ctx->filesystem_name);
272 else
273 log_out(ctx, _("%s is in use.\n"), ctx->filesystem_name);
274 if (!ctx->interactive || ctx->mount_flags & EXT2_MF_BUSY)
275 fatal_error(ctx, _("Cannot continue, aborting.\n\n"));
276 puts("\007\007\007\007");
277 log_out(ctx, "%s", _("\n\nWARNING!!! "
278 "The filesystem is mounted. "
279 "If you continue you ***WILL***\n"
280 "cause ***SEVERE*** filesystem damage.\n\n"));
281 puts("\007\007\007");
282 cont = ask_yn(ctx, _("Do you really want to continue"), 0);
283 if (!cont) {
284 printf("%s", _("check aborted.\n"));
285 exit (0);
286 }
287 return;
288 }
289
is_on_batt(void)290 static int is_on_batt(void)
291 {
292 FILE *f;
293 DIR *d;
294 char tmp[80], tmp2[80], fname[NAME_MAX+30];
295 unsigned int acflag;
296 struct dirent* de;
297
298 f = fopen("/sys/class/power_supply/AC/online", "r");
299 if (f) {
300 if (fscanf(f, "%u\n", &acflag) == 1) {
301 fclose(f);
302 return (!acflag);
303 }
304 fclose(f);
305 }
306 f = fopen("/proc/apm", "r");
307 if (f) {
308 if (fscanf(f, "%79s %79s %79s %x", tmp, tmp, tmp, &acflag) != 4)
309 acflag = 1;
310 fclose(f);
311 return (acflag != 1);
312 }
313 d = opendir("/proc/acpi/ac_adapter");
314 if (d) {
315 while ((de=readdir(d)) != NULL) {
316 if (!strncmp(".", de->d_name, 1))
317 continue;
318 snprintf(fname, sizeof(fname),
319 "/proc/acpi/ac_adapter/%s/state",
320 de->d_name);
321 f = fopen(fname, "r");
322 if (!f)
323 continue;
324 if (fscanf(f, "%79s %79s", tmp2, tmp) != 2)
325 tmp[0] = 0;
326 fclose(f);
327 if (strncmp(tmp, "off-line", 8) == 0) {
328 closedir(d);
329 return 1;
330 }
331 }
332 closedir(d);
333 }
334 return 0;
335 }
336
337 /*
338 * This routine checks to see if a filesystem can be skipped; if so,
339 * it will exit with E2FSCK_OK. Under some conditions it will print a
340 * message explaining why a check is being forced.
341 */
check_if_skip(e2fsck_t ctx)342 static void check_if_skip(e2fsck_t ctx)
343 {
344 ext2_filsys fs = ctx->fs;
345 struct problem_context pctx;
346 const char *reason = NULL;
347 unsigned int reason_arg = 0;
348 long next_check;
349 int batt = is_on_batt();
350 int defer_check_on_battery;
351 int broken_system_clock;
352 time_t lastcheck;
353
354 if (ctx->flags & E2F_FLAG_PROBLEMS_FIXED)
355 return;
356
357 profile_get_boolean(ctx->profile, "options", "broken_system_clock",
358 0, 0, &broken_system_clock);
359 if (ctx->flags & E2F_FLAG_TIME_INSANE)
360 broken_system_clock = 1;
361 profile_get_boolean(ctx->profile, "options",
362 "defer_check_on_battery", 0, 1,
363 &defer_check_on_battery);
364 if (!defer_check_on_battery)
365 batt = 0;
366
367 if ((ctx->options & E2F_OPT_FORCE) || bad_blocks_file || cflag)
368 return;
369
370 if (ctx->options & E2F_OPT_JOURNAL_ONLY)
371 goto skip;
372
373 lastcheck = fs->super->s_lastcheck;
374 if (lastcheck > ctx->now)
375 lastcheck -= ctx->time_fudge;
376 if ((fs->super->s_state & EXT2_ERROR_FS) ||
377 !ext2fs_test_valid(fs))
378 reason = _(" contains a file system with errors");
379 else if ((fs->super->s_state & EXT2_VALID_FS) == 0)
380 reason = _(" was not cleanly unmounted");
381 else if (check_backup_super_block(ctx))
382 reason = _(" primary superblock features different from backup");
383 else if ((fs->super->s_max_mnt_count > 0) &&
384 (fs->super->s_mnt_count >=
385 (unsigned) fs->super->s_max_mnt_count)) {
386 reason = _(" has been mounted %u times without being checked");
387 reason_arg = fs->super->s_mnt_count;
388 if (batt && (fs->super->s_mnt_count <
389 (unsigned) fs->super->s_max_mnt_count*2))
390 reason = 0;
391 } else if (!broken_system_clock && fs->super->s_checkinterval &&
392 (ctx->now < lastcheck)) {
393 reason = _(" has filesystem last checked time in the future");
394 if (batt)
395 reason = 0;
396 } else if (!broken_system_clock && fs->super->s_checkinterval &&
397 ((ctx->now - lastcheck) >=
398 ((time_t) fs->super->s_checkinterval))) {
399 reason = _(" has gone %u days without being checked");
400 reason_arg = (ctx->now - fs->super->s_lastcheck)/(3600*24);
401 if (batt && ((ctx->now - fs->super->s_lastcheck) <
402 fs->super->s_checkinterval*2))
403 reason = 0;
404 } else if (broken_system_clock && fs->super->s_checkinterval) {
405 log_out(ctx, "%s: ", ctx->device_name);
406 log_out(ctx, "%s",
407 _("ignoring check interval, broken_system_clock set\n"));
408 }
409
410 if (reason) {
411 log_out(ctx, "%s", ctx->device_name);
412 log_out(ctx, reason, reason_arg);
413 log_out(ctx, "%s", _(", check forced.\n"));
414 return;
415 }
416
417 /*
418 * Update the global counts from the block group counts. This
419 * is needed since modern kernels don't update the global
420 * counts so as to avoid locking the entire file system. So
421 * if the filesystem is not unmounted cleanly, the global
422 * counts may not be accurate. Update them here if we can,
423 * for the benefit of users who might examine the file system
424 * using dumpe2fs. (This is for cosmetic reasons only.)
425 */
426 clear_problem_context(&pctx);
427 pctx.ino = fs->super->s_free_inodes_count;
428 pctx.ino2 = ctx->free_inodes;
429 if ((pctx.ino != pctx.ino2) &&
430 !(ctx->options & E2F_OPT_READONLY) &&
431 fix_problem(ctx, PR_0_FREE_INODE_COUNT, &pctx)) {
432 fs->super->s_free_inodes_count = ctx->free_inodes;
433 ext2fs_mark_super_dirty(fs);
434 }
435 clear_problem_context(&pctx);
436 pctx.blk = ext2fs_free_blocks_count(fs->super);
437 pctx.blk2 = ctx->free_blocks;
438 if ((pctx.blk != pctx.blk2) &&
439 !(ctx->options & E2F_OPT_READONLY) &&
440 fix_problem(ctx, PR_0_FREE_BLOCK_COUNT, &pctx)) {
441 ext2fs_free_blocks_count_set(fs->super, ctx->free_blocks);
442 ext2fs_mark_super_dirty(fs);
443 }
444
445 /* Print the summary message when we're skipping a full check */
446 log_out(ctx, _("%s: clean, %u/%u files, %llu/%llu blocks"),
447 ctx->device_name,
448 fs->super->s_inodes_count - fs->super->s_free_inodes_count,
449 fs->super->s_inodes_count,
450 (unsigned long long) ext2fs_blocks_count(fs->super) -
451 ext2fs_free_blocks_count(fs->super),
452 (unsigned long long) ext2fs_blocks_count(fs->super));
453 next_check = 100000;
454 if (fs->super->s_max_mnt_count > 0) {
455 next_check = fs->super->s_max_mnt_count - fs->super->s_mnt_count;
456 if (next_check <= 0)
457 next_check = 1;
458 }
459 if (!broken_system_clock && fs->super->s_checkinterval &&
460 ((ctx->now - fs->super->s_lastcheck) >= fs->super->s_checkinterval))
461 next_check = 1;
462 if (next_check <= 5) {
463 if (next_check == 1) {
464 if (batt)
465 log_out(ctx, "%s",
466 _(" (check deferred; on battery)"));
467 else
468 log_out(ctx, "%s",
469 _(" (check after next mount)"));
470 } else
471 log_out(ctx, _(" (check in %ld mounts)"),
472 next_check);
473 }
474 log_out(ctx, "\n");
475 skip:
476 ext2fs_close_free(&ctx->fs);
477 e2fsck_free_context(ctx);
478 exit(FSCK_OK);
479 }
480
481 /*
482 * For completion notice
483 */
484 struct percent_tbl {
485 int max_pass;
486 int table[32];
487 };
488 static struct percent_tbl e2fsck_tbl = {
489 5, { 0, 70, 90, 92, 95, 100 }
490 };
491 static char bar[128], spaces[128];
492
calc_percent(struct percent_tbl * tbl,int pass,int curr,int max)493 static float calc_percent(struct percent_tbl *tbl, int pass, int curr,
494 int max)
495 {
496 float percent;
497
498 if (pass <= 0)
499 return 0.0;
500 if (pass > tbl->max_pass || max == 0)
501 return 100.0;
502 percent = ((float) curr) / ((float) max);
503 return ((percent * (tbl->table[pass] - tbl->table[pass-1]))
504 + tbl->table[pass-1]);
505 }
506
e2fsck_clear_progbar(e2fsck_t ctx)507 void e2fsck_clear_progbar(e2fsck_t ctx)
508 {
509 if (!(ctx->flags & E2F_FLAG_PROG_BAR))
510 return;
511
512 printf("%s%s\r%s", ctx->start_meta, spaces + (sizeof(spaces) - 80),
513 ctx->stop_meta);
514 fflush(stdout);
515 ctx->flags &= ~E2F_FLAG_PROG_BAR;
516 }
517
e2fsck_simple_progress(e2fsck_t ctx,const char * label,float percent,unsigned int dpynum)518 int e2fsck_simple_progress(e2fsck_t ctx, const char *label, float percent,
519 unsigned int dpynum)
520 {
521 static const char spinner[] = "\\|/-";
522 int i;
523 unsigned int tick;
524 struct timeval tv;
525 int dpywidth;
526 int fixed_percent;
527
528 if (ctx->flags & E2F_FLAG_PROG_SUPPRESS)
529 return 0;
530
531 /*
532 * Calculate the new progress position. If the
533 * percentage hasn't changed, then we skip out right
534 * away.
535 */
536 fixed_percent = (int) ((10 * percent) + 0.5);
537 if (ctx->progress_last_percent == fixed_percent)
538 return 0;
539 ctx->progress_last_percent = fixed_percent;
540
541 /*
542 * If we've already updated the spinner once within
543 * the last 1/8th of a second, no point doing it
544 * again.
545 */
546 gettimeofday(&tv, NULL);
547 tick = (tv.tv_sec << 3) + (tv.tv_usec / (1000000 / 8));
548 if ((tick == ctx->progress_last_time) &&
549 (fixed_percent != 0) && (fixed_percent != 1000))
550 return 0;
551 ctx->progress_last_time = tick;
552
553 /*
554 * Advance the spinner, and note that the progress bar
555 * will be on the screen
556 */
557 ctx->progress_pos = (ctx->progress_pos+1) & 3;
558 ctx->flags |= E2F_FLAG_PROG_BAR;
559
560 dpywidth = 66 - strlen(label);
561 dpywidth = 8 * (dpywidth / 8);
562 if (dpynum)
563 dpywidth -= 8;
564
565 i = ((percent * dpywidth) + 50) / 100;
566 printf("%s%s: |%s%s", ctx->start_meta, label,
567 bar + (sizeof(bar) - (i+1)),
568 spaces + (sizeof(spaces) - (dpywidth - i + 1)));
569 if (fixed_percent == 1000)
570 fputc('|', stdout);
571 else
572 fputc(spinner[ctx->progress_pos & 3], stdout);
573 printf(" %4.1f%% ", percent);
574 if (dpynum)
575 printf("%u\r", dpynum);
576 else
577 fputs(" \r", stdout);
578 fputs(ctx->stop_meta, stdout);
579
580 if (fixed_percent == 1000)
581 e2fsck_clear_progbar(ctx);
582 fflush(stdout);
583
584 return 0;
585 }
586
e2fsck_update_progress(e2fsck_t ctx,int pass,unsigned long cur,unsigned long max)587 static int e2fsck_update_progress(e2fsck_t ctx, int pass,
588 unsigned long cur, unsigned long max)
589 {
590 char buf[1024];
591 float percent;
592
593 if (pass == 0)
594 return 0;
595
596 if (ctx->progress_fd) {
597 snprintf(buf, sizeof(buf), "%d %lu %lu %s\n",
598 pass, cur, max, ctx->device_name);
599 write_all(ctx->progress_fd, buf, strlen(buf));
600 } else {
601 percent = calc_percent(&e2fsck_tbl, pass, cur, max);
602 e2fsck_simple_progress(ctx, ctx->device_name,
603 percent, 0);
604 }
605 return 0;
606 }
607
608 #define PATH_SET "PATH=/sbin"
609
610 /*
611 * Make sure 0,1,2 file descriptors are open, so that we don't open
612 * the filesystem using the same file descriptor as stdout or stderr.
613 */
reserve_stdio_fds(void)614 static void reserve_stdio_fds(void)
615 {
616 int fd = 0;
617
618 while (fd <= 2) {
619 fd = open("/dev/null", O_RDWR);
620 if (fd < 0) {
621 fprintf(stderr, _("ERROR: Couldn't open "
622 "/dev/null (%s)\n"),
623 strerror(errno));
624 return;
625 }
626 }
627 (void) close(fd);
628 }
629
630 #ifdef HAVE_SIGNAL_H
signal_progress_on(int sig EXT2FS_ATTR ((unused)))631 static void signal_progress_on(int sig EXT2FS_ATTR((unused)))
632 {
633 e2fsck_t ctx = e2fsck_global_ctx;
634
635 if (!ctx)
636 return;
637
638 ctx->progress = e2fsck_update_progress;
639 }
640
signal_progress_off(int sig EXT2FS_ATTR ((unused)))641 static void signal_progress_off(int sig EXT2FS_ATTR((unused)))
642 {
643 e2fsck_t ctx = e2fsck_global_ctx;
644
645 if (!ctx)
646 return;
647
648 e2fsck_clear_progbar(ctx);
649 ctx->progress = 0;
650 }
651
signal_cancel(int sig EXT2FS_ATTR ((unused)))652 static void signal_cancel(int sig EXT2FS_ATTR((unused)))
653 {
654 e2fsck_t ctx = e2fsck_global_ctx;
655
656 if (!ctx)
657 exit(FSCK_CANCELED);
658
659 ctx->flags |= E2F_FLAG_CANCEL;
660 }
661 #endif
662
parse_extended_opts(e2fsck_t ctx,const char * opts)663 static void parse_extended_opts(e2fsck_t ctx, const char *opts)
664 {
665 char *buf, *token, *next, *p, *arg;
666 int ea_ver;
667 int extended_usage = 0;
668 unsigned long long reada_kb;
669
670 buf = string_copy(ctx, opts, 0);
671 for (token = buf; token && *token; token = next) {
672 p = strchr(token, ',');
673 next = 0;
674 if (p) {
675 *p = 0;
676 next = p+1;
677 }
678 arg = strchr(token, '=');
679 if (arg) {
680 *arg = 0;
681 arg++;
682 }
683 if (strcmp(token, "ea_ver") == 0) {
684 if (!arg) {
685 extended_usage++;
686 continue;
687 }
688 ea_ver = strtoul(arg, &p, 0);
689 if (*p ||
690 ((ea_ver != 1) && (ea_ver != 2))) {
691 fprintf(stderr, "%s",
692 _("Invalid EA version.\n"));
693 extended_usage++;
694 continue;
695 }
696 ctx->ext_attr_ver = ea_ver;
697 } else if (strcmp(token, "readahead_kb") == 0) {
698 if (!arg) {
699 extended_usage++;
700 continue;
701 }
702 reada_kb = strtoull(arg, &p, 0);
703 if (*p) {
704 fprintf(stderr, "%s",
705 _("Invalid readahead buffer size.\n"));
706 extended_usage++;
707 continue;
708 }
709 ctx->readahead_kb = reada_kb;
710 } else if (strcmp(token, "fragcheck") == 0) {
711 ctx->options |= E2F_OPT_FRAGCHECK;
712 continue;
713 } else if (strcmp(token, "journal_only") == 0) {
714 if (arg) {
715 extended_usage++;
716 continue;
717 }
718 ctx->options |= E2F_OPT_JOURNAL_ONLY;
719 } else if (strcmp(token, "discard") == 0) {
720 ctx->options |= E2F_OPT_DISCARD;
721 continue;
722 } else if (strcmp(token, "nodiscard") == 0) {
723 ctx->options &= ~E2F_OPT_DISCARD;
724 continue;
725 } else if (strcmp(token, "optimize_extents") == 0) {
726 ctx->options &= ~E2F_OPT_NOOPT_EXTENTS;
727 continue;
728 } else if (strcmp(token, "no_optimize_extents") == 0) {
729 ctx->options |= E2F_OPT_NOOPT_EXTENTS;
730 continue;
731 } else if (strcmp(token, "inode_count_fullmap") == 0) {
732 ctx->options |= E2F_OPT_ICOUNT_FULLMAP;
733 continue;
734 } else if (strcmp(token, "no_inode_count_fullmap") == 0) {
735 ctx->options &= ~E2F_OPT_ICOUNT_FULLMAP;
736 continue;
737 } else if (strcmp(token, "log_filename") == 0) {
738 if (!arg)
739 extended_usage++;
740 else
741 ctx->log_fn = string_copy(ctx, arg, 0);
742 continue;
743 } else if (strcmp(token, "problem_log") == 0) {
744 if (!arg)
745 extended_usage++;
746 else
747 ctx->problem_log_fn = string_copy(ctx, arg, 0);
748 continue;
749 } else if (strcmp(token, "bmap2extent") == 0) {
750 ctx->options |= E2F_OPT_CONVERT_BMAP;
751 continue;
752 } else if (strcmp(token, "fixes_only") == 0) {
753 ctx->options |= E2F_OPT_FIXES_ONLY;
754 continue;
755 } else if (strcmp(token, "unshare_blocks") == 0) {
756 ctx->options |= E2F_OPT_UNSHARE_BLOCKS;
757 ctx->options |= E2F_OPT_FORCE;
758 continue;
759 } else if (strcmp(token, "check_encoding") == 0) {
760 ctx->options |= E2F_OPT_CHECK_ENCODING;
761 continue;
762 #ifdef CONFIG_DEVELOPER_FEATURES
763 } else if (strcmp(token, "clear_all_uninit_bits") == 0) {
764 ctx->options |= E2F_OPT_CLEAR_UNINIT;
765 continue;
766 #endif
767 } else {
768 fprintf(stderr, _("Unknown extended option: %s\n"),
769 token);
770 extended_usage++;
771 }
772 }
773 free(buf);
774
775 if (extended_usage) {
776 fputs(_("\nExtended options are separated by commas, "
777 "and may take an argument which\n"
778 "is set off by an equals ('=') sign. "
779 "Valid extended options are:\n\n"), stderr);
780 fputs(_("\tea_ver=<ea_version (1 or 2)>\n"), stderr);
781 fputs("\tfragcheck\n", stderr);
782 fputs("\tjournal_only\n", stderr);
783 fputs("\tdiscard\n", stderr);
784 fputs("\tnodiscard\n", stderr);
785 fputs("\toptimize_extents\n", stderr);
786 fputs("\tno_optimize_extents\n", stderr);
787 fputs("\tinode_count_fullmap\n", stderr);
788 fputs("\tno_inode_count_fullmap\n", stderr);
789 fputs(_("\treadahead_kb=<buffer size>\n"), stderr);
790 fputs("\tbmap2extent\n", stderr);
791 fputs("\tunshare_blocks\n", stderr);
792 fputs("\tfixes_only\n", stderr);
793 fputs("\tcheck_encoding\n", stderr);
794 fputc('\n', stderr);
795 exit(1);
796 }
797 }
798
syntax_err_report(const char * filename,long err,int line_num)799 static void syntax_err_report(const char *filename, long err, int line_num)
800 {
801 fprintf(stderr,
802 _("Syntax error in e2fsck config file (%s, line #%d)\n\t%s\n"),
803 filename, line_num, error_message(err));
804 exit(FSCK_ERROR);
805 }
806
807 static const char *config_fn[] = { ROOT_SYSCONFDIR "/e2fsck.conf", 0 };
808
PRS(int argc,char * argv[],e2fsck_t * ret_ctx)809 static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx)
810 {
811 int flush = 0;
812 int c, fd;
813 #ifdef MTRACE
814 extern void *mallwatch;
815 #endif
816 e2fsck_t ctx;
817 errcode_t retval;
818 #ifdef HAVE_SIGNAL_H
819 struct sigaction sa;
820 #endif
821 char *extended_opts = 0;
822 char *cp;
823 int res; /* result of sscanf */
824 #ifdef CONFIG_JBD_DEBUG
825 char *jbd_debug;
826 #endif
827 unsigned long long phys_mem_kb, blk;
828
829 retval = e2fsck_allocate_context(&ctx);
830 if (retval)
831 return retval;
832
833 *ret_ctx = ctx;
834 e2fsck_global_ctx = ctx;
835
836 setvbuf(stdout, NULL, _IONBF, BUFSIZ);
837 setvbuf(stderr, NULL, _IONBF, BUFSIZ);
838 if (getenv("E2FSCK_FORCE_INTERACTIVE") || (isatty(0) && isatty(1))) {
839 ctx->interactive = 1;
840 } else {
841 ctx->start_meta[0] = '\001';
842 ctx->stop_meta[0] = '\002';
843 }
844 memset(bar, '=', sizeof(bar)-1);
845 memset(spaces, ' ', sizeof(spaces)-1);
846 add_error_table(&et_ext2_error_table);
847 add_error_table(&et_prof_error_table);
848 blkid_get_cache(&ctx->blkid, NULL);
849
850 if (argc && *argv)
851 ctx->program_name = *argv;
852 else
853 usage(NULL);
854
855 phys_mem_kb = get_memory_size() / 1024;
856 ctx->readahead_kb = ~0ULL;
857 while ((c = getopt(argc, argv, "panyrcC:B:dE:fvtFVM:b:I:j:P:l:L:N:SsDkz:")) != EOF)
858 switch (c) {
859 case 'C':
860 ctx->progress = e2fsck_update_progress;
861 res = sscanf(optarg, "%d", &ctx->progress_fd);
862 if (res != 1)
863 goto sscanf_err;
864
865 if (ctx->progress_fd < 0) {
866 ctx->progress = 0;
867 ctx->progress_fd = ctx->progress_fd * -1;
868 }
869 if (!ctx->progress_fd)
870 break;
871 /* Validate the file descriptor to avoid disasters */
872 fd = dup(ctx->progress_fd);
873 if (fd < 0) {
874 fprintf(stderr,
875 _("Error validating file descriptor %d: %s\n"),
876 ctx->progress_fd,
877 error_message(errno));
878 fatal_error(ctx,
879 _("Invalid completion information file descriptor"));
880 } else
881 close(fd);
882 break;
883 case 'D':
884 ctx->options |= E2F_OPT_COMPRESS_DIRS;
885 break;
886 case 'E':
887 extended_opts = optarg;
888 break;
889 case 'p':
890 case 'a':
891 if (ctx->options & (E2F_OPT_YES|E2F_OPT_NO)) {
892 conflict_opt:
893 fatal_error(ctx,
894 _("Only one of the options -p/-a, -n or -y may be specified."));
895 }
896 ctx->options |= E2F_OPT_PREEN;
897 break;
898 case 'n':
899 if (ctx->options & (E2F_OPT_YES|E2F_OPT_PREEN))
900 goto conflict_opt;
901 ctx->options |= E2F_OPT_NO;
902 break;
903 case 'y':
904 if (ctx->options & (E2F_OPT_PREEN|E2F_OPT_NO))
905 goto conflict_opt;
906 ctx->options |= E2F_OPT_YES;
907 break;
908 case 't':
909 #ifdef RESOURCE_TRACK
910 if (ctx->options & E2F_OPT_TIME)
911 ctx->options |= E2F_OPT_TIME2;
912 else
913 ctx->options |= E2F_OPT_TIME;
914 #else
915 fprintf(stderr, _("The -t option is not "
916 "supported on this version of e2fsck.\n"));
917 #endif
918 break;
919 case 'c':
920 if (cflag++)
921 ctx->options |= E2F_OPT_WRITECHECK;
922 ctx->options |= E2F_OPT_CHECKBLOCKS;
923 break;
924 case 'r':
925 /* What we do by default, anyway! */
926 break;
927 case 'b':
928 res = sscanf(optarg, "%llu", &blk);
929 ctx->use_superblock = blk;
930 if (res != 1)
931 goto sscanf_err;
932 ctx->flags |= E2F_FLAG_SB_SPECIFIED;
933 break;
934 case 'B':
935 ctx->blocksize = atoi(optarg);
936 break;
937 case 'I':
938 res = sscanf(optarg, "%d", &ctx->inode_buffer_blocks);
939 if (res != 1)
940 goto sscanf_err;
941 break;
942 case 'j':
943 ctx->journal_name = get_devname(ctx->blkid,
944 optarg, NULL);
945 if (!ctx->journal_name) {
946 com_err(ctx->program_name, 0,
947 _("Unable to resolve '%s'"),
948 optarg);
949 fatal_error(ctx, 0);
950 }
951 break;
952 case 'P':
953 res = sscanf(optarg, "%d", &ctx->process_inode_size);
954 if (res != 1)
955 goto sscanf_err;
956 break;
957 case 'L':
958 replace_bad_blocks++;
959 /* fall through */
960 case 'l':
961 if (bad_blocks_file)
962 free(bad_blocks_file);
963 bad_blocks_file = string_copy(ctx, optarg, 0);
964 break;
965 case 'd':
966 ctx->options |= E2F_OPT_DEBUG;
967 break;
968 case 'f':
969 ctx->options |= E2F_OPT_FORCE;
970 break;
971 case 'F':
972 flush = 1;
973 break;
974 case 'v':
975 verbose = 1;
976 break;
977 case 'V':
978 show_version_only = 1;
979 break;
980 #ifdef MTRACE
981 case 'M':
982 mallwatch = (void *) strtol(optarg, NULL, 0);
983 break;
984 #endif
985 case 'N':
986 ctx->device_name = string_copy(ctx, optarg, 0);
987 break;
988 case 'k':
989 keep_bad_blocks++;
990 break;
991 case 'z':
992 ctx->undo_file = optarg;
993 break;
994 default:
995 usage(ctx);
996 }
997 if (show_version_only)
998 return 0;
999 if (optind != argc - 1)
1000 usage(ctx);
1001 if ((ctx->options & E2F_OPT_NO) &&
1002 (ctx->options & E2F_OPT_COMPRESS_DIRS)) {
1003 com_err(ctx->program_name, 0, "%s",
1004 _("The -n and -D options are incompatible."));
1005 fatal_error(ctx, 0);
1006 }
1007 if ((ctx->options & E2F_OPT_NO) && cflag) {
1008 com_err(ctx->program_name, 0, "%s",
1009 _("The -n and -c options are incompatible."));
1010 fatal_error(ctx, 0);
1011 }
1012 if ((ctx->options & E2F_OPT_NO) && bad_blocks_file) {
1013 com_err(ctx->program_name, 0, "%s",
1014 _("The -n and -l/-L options are incompatible."));
1015 fatal_error(ctx, 0);
1016 }
1017 if (ctx->options & E2F_OPT_NO)
1018 ctx->options |= E2F_OPT_READONLY;
1019
1020 ctx->io_options = strchr(argv[optind], '?');
1021 if (ctx->io_options)
1022 *ctx->io_options++ = 0;
1023 ctx->filesystem_name = get_devname(ctx->blkid, argv[optind], 0);
1024 if (!ctx->filesystem_name) {
1025 com_err(ctx->program_name, 0, _("Unable to resolve '%s'"),
1026 argv[optind]);
1027 fatal_error(ctx, 0);
1028 }
1029 if (extended_opts)
1030 parse_extended_opts(ctx, extended_opts);
1031
1032 /* Complain about mutually exclusive rebuilding activities */
1033 if (getenv("E2FSCK_FIXES_ONLY"))
1034 ctx->options |= E2F_OPT_FIXES_ONLY;
1035 if ((ctx->options & E2F_OPT_COMPRESS_DIRS) &&
1036 (ctx->options & E2F_OPT_FIXES_ONLY)) {
1037 com_err(ctx->program_name, 0, "%s",
1038 _("The -D and -E fixes_only options are incompatible."));
1039 fatal_error(ctx, 0);
1040 }
1041 if ((ctx->options & E2F_OPT_CONVERT_BMAP) &&
1042 (ctx->options & E2F_OPT_FIXES_ONLY)) {
1043 com_err(ctx->program_name, 0, "%s",
1044 _("The -E bmap2extent and fixes_only options are incompatible."));
1045 fatal_error(ctx, 0);
1046 }
1047
1048 if ((cp = getenv("E2FSCK_CONFIG")) != NULL)
1049 config_fn[0] = cp;
1050 profile_set_syntax_err_cb(syntax_err_report);
1051 profile_init(config_fn, &ctx->profile);
1052
1053 profile_get_boolean(ctx->profile, "options", "report_time", 0, 0,
1054 &c);
1055 if (c)
1056 ctx->options |= E2F_OPT_TIME | E2F_OPT_TIME2;
1057 profile_get_boolean(ctx->profile, "options", "report_verbose", 0, 0,
1058 &c);
1059 if (c)
1060 verbose = 1;
1061
1062 profile_get_boolean(ctx->profile, "options", "no_optimize_extents",
1063 0, 0, &c);
1064 if (c)
1065 ctx->options |= E2F_OPT_NOOPT_EXTENTS;
1066
1067 profile_get_boolean(ctx->profile, "options", "inode_count_fullmap",
1068 0, 0, &c);
1069 if (c)
1070 ctx->options |= E2F_OPT_ICOUNT_FULLMAP;
1071
1072 if (ctx->readahead_kb == ~0ULL) {
1073 profile_get_integer(ctx->profile, "options",
1074 "readahead_mem_pct", 0, -1, &c);
1075 if (c >= 0 && c <= 100)
1076 ctx->readahead_kb = phys_mem_kb * c / 100;
1077 profile_get_integer(ctx->profile, "options",
1078 "readahead_kb", 0, -1, &c);
1079 if (c >= 0)
1080 ctx->readahead_kb = c;
1081 if (ctx->readahead_kb != ~0ULL &&
1082 ctx->readahead_kb > phys_mem_kb)
1083 ctx->readahead_kb = phys_mem_kb;
1084 }
1085
1086 /* Turn off discard in read-only mode */
1087 if ((ctx->options & E2F_OPT_NO) &&
1088 (ctx->options & E2F_OPT_DISCARD))
1089 ctx->options &= ~E2F_OPT_DISCARD;
1090
1091 if (flush) {
1092 fd = open(ctx->filesystem_name, O_RDONLY, 0);
1093 if (fd < 0) {
1094 com_err("open", errno,
1095 _("while opening %s for flushing"),
1096 ctx->filesystem_name);
1097 fatal_error(ctx, 0);
1098 }
1099 if ((retval = ext2fs_sync_device(fd, 1))) {
1100 com_err("ext2fs_sync_device", retval,
1101 _("while trying to flush %s"),
1102 ctx->filesystem_name);
1103 fatal_error(ctx, 0);
1104 }
1105 close(fd);
1106 }
1107 if (cflag && bad_blocks_file) {
1108 fprintf(stderr, "%s", _("The -c and the -l/-L options may not "
1109 "be both used at the same time.\n"));
1110 exit(FSCK_USAGE);
1111 }
1112 #ifdef HAVE_SIGNAL_H
1113 /*
1114 * Set up signal action
1115 */
1116 memset(&sa, 0, sizeof(struct sigaction));
1117 sa.sa_handler = signal_cancel;
1118 sigaction(SIGINT, &sa, 0);
1119 sigaction(SIGTERM, &sa, 0);
1120 #ifdef SA_RESTART
1121 sa.sa_flags = SA_RESTART;
1122 #endif
1123 sa.sa_handler = signal_progress_on;
1124 sigaction(SIGUSR1, &sa, 0);
1125 sa.sa_handler = signal_progress_off;
1126 sigaction(SIGUSR2, &sa, 0);
1127 #endif
1128
1129 /* Update our PATH to include /sbin if we need to run badblocks */
1130 if (cflag) {
1131 char *oldpath = getenv("PATH");
1132 char *newpath;
1133 int len = sizeof(PATH_SET) + 1;
1134
1135 if (oldpath)
1136 len += strlen(oldpath);
1137
1138 newpath = malloc(len);
1139 if (!newpath)
1140 fatal_error(ctx, "Couldn't malloc() newpath");
1141 strcpy(newpath, PATH_SET);
1142
1143 if (oldpath) {
1144 strcat(newpath, ":");
1145 strcat(newpath, oldpath);
1146 }
1147 putenv(newpath);
1148 }
1149 #ifdef CONFIG_JBD_DEBUG
1150 jbd_debug = getenv("E2FSCK_JBD_DEBUG");
1151 if (jbd_debug) {
1152 res = sscanf(jbd_debug, "%d", &journal_enable_debug);
1153 if (res != 1) {
1154 fprintf(stderr,
1155 _("E2FSCK_JBD_DEBUG \"%s\" not an integer\n\n"),
1156 jbd_debug);
1157 exit (1);
1158 }
1159 }
1160 #endif
1161 return 0;
1162
1163 sscanf_err:
1164 fprintf(stderr, _("\nInvalid non-numeric argument to -%c (\"%s\")\n\n"),
1165 c, optarg);
1166 exit (1);
1167 }
1168
try_open_fs(e2fsck_t ctx,int flags,io_manager io_ptr,ext2_filsys * ret_fs)1169 static errcode_t try_open_fs(e2fsck_t ctx, int flags, io_manager io_ptr,
1170 ext2_filsys *ret_fs)
1171 {
1172 errcode_t retval;
1173
1174 *ret_fs = NULL;
1175
1176 if (ctx->superblock) {
1177 unsigned long blocksize = ctx->blocksize;
1178
1179 if (!blocksize) {
1180 for (blocksize = EXT2_MIN_BLOCK_SIZE;
1181 blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) {
1182
1183 retval = ext2fs_open2(ctx->filesystem_name,
1184 ctx->io_options, flags,
1185 ctx->superblock, blocksize,
1186 unix_io_manager, ret_fs);
1187 if (*ret_fs) {
1188 ext2fs_free(*ret_fs);
1189 *ret_fs = NULL;
1190 }
1191 if (!retval)
1192 break;
1193 }
1194 if (retval)
1195 return retval;
1196 }
1197
1198 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1199 flags, ctx->superblock, blocksize,
1200 io_ptr, ret_fs);
1201 } else
1202 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1203 flags, 0, 0, io_ptr, ret_fs);
1204
1205 if (retval == 0) {
1206 (*ret_fs)->priv_data = ctx;
1207 e2fsck_set_bitmap_type(*ret_fs, EXT2FS_BMAP64_RBTREE,
1208 "default", NULL);
1209 }
1210 return retval;
1211 }
1212
1213 static const char *my_ver_string = E2FSPROGS_VERSION;
1214 static const char *my_ver_date = E2FSPROGS_DATE;
1215
e2fsck_check_mmp(ext2_filsys fs,e2fsck_t ctx)1216 static errcode_t e2fsck_check_mmp(ext2_filsys fs, e2fsck_t ctx)
1217 {
1218 struct mmp_struct *mmp_s;
1219 unsigned int mmp_check_interval;
1220 errcode_t retval = 0;
1221 struct problem_context pctx;
1222 unsigned int wait_time = 0;
1223
1224 clear_problem_context(&pctx);
1225 if (fs->mmp_buf == NULL) {
1226 retval = ext2fs_get_mem(fs->blocksize, &fs->mmp_buf);
1227 if (retval)
1228 goto check_error;
1229 }
1230
1231 retval = ext2fs_mmp_read(fs, fs->super->s_mmp_block, fs->mmp_buf);
1232 if (retval)
1233 goto check_error;
1234
1235 mmp_s = fs->mmp_buf;
1236
1237 mmp_check_interval = fs->super->s_mmp_update_interval;
1238 if (mmp_check_interval < EXT4_MMP_MIN_CHECK_INTERVAL)
1239 mmp_check_interval = EXT4_MMP_MIN_CHECK_INTERVAL;
1240
1241 /*
1242 * If check_interval in MMP block is larger, use that instead of
1243 * check_interval from the superblock.
1244 */
1245 if (mmp_s->mmp_check_interval > mmp_check_interval)
1246 mmp_check_interval = mmp_s->mmp_check_interval;
1247
1248 wait_time = mmp_check_interval * 2 + 1;
1249
1250 if (mmp_s->mmp_seq == EXT4_MMP_SEQ_CLEAN)
1251 retval = 0;
1252 else if (mmp_s->mmp_seq == EXT4_MMP_SEQ_FSCK)
1253 retval = EXT2_ET_MMP_FSCK_ON;
1254 else if (mmp_s->mmp_seq > EXT4_MMP_SEQ_MAX)
1255 retval = EXT2_ET_MMP_UNKNOWN_SEQ;
1256
1257 if (retval)
1258 goto check_error;
1259
1260 /* Print warning if e2fsck will wait for more than 20 secs. */
1261 if (verbose || wait_time > EXT4_MMP_MIN_CHECK_INTERVAL * 4) {
1262 log_out(ctx, _("MMP interval is %u seconds and total wait "
1263 "time is %u seconds. Please wait...\n"),
1264 mmp_check_interval, wait_time * 2);
1265 }
1266
1267 return 0;
1268
1269 check_error:
1270
1271 if (retval == EXT2_ET_MMP_BAD_BLOCK) {
1272 if (fix_problem(ctx, PR_0_MMP_INVALID_BLK, &pctx)) {
1273 fs->super->s_mmp_block = 0;
1274 ext2fs_mark_super_dirty(fs);
1275 retval = 0;
1276 }
1277 } else if (retval == EXT2_ET_MMP_FAILED) {
1278 com_err(ctx->program_name, retval, "%s",
1279 _("while checking MMP block"));
1280 dump_mmp_msg(fs->mmp_buf, NULL);
1281 } else if (retval == EXT2_ET_MMP_FSCK_ON ||
1282 retval == EXT2_ET_MMP_UNKNOWN_SEQ) {
1283 com_err(ctx->program_name, retval, "%s",
1284 _("while checking MMP block"));
1285 dump_mmp_msg(fs->mmp_buf,
1286 _("If you are sure the filesystem is not "
1287 "in use on any node, run:\n"
1288 "'tune2fs -f -E clear_mmp %s'\n"),
1289 ctx->device_name);
1290 } else if (retval == EXT2_ET_MMP_MAGIC_INVALID) {
1291 if (fix_problem(ctx, PR_0_MMP_INVALID_MAGIC, &pctx)) {
1292 ext2fs_mmp_clear(fs);
1293 retval = 0;
1294 }
1295 } else if (retval == EXT2_ET_MMP_CSUM_INVALID) {
1296 if (fix_problem(ctx, PR_0_MMP_CSUM_INVALID, &pctx)) {
1297 ext2fs_mmp_clear(fs);
1298 retval = 0;
1299 }
1300 } else
1301 com_err(ctx->program_name, retval, "%s",
1302 _("while reading MMP block"));
1303 return retval;
1304 }
1305
e2fsck_setup_tdb(e2fsck_t ctx,io_manager * io_ptr)1306 static int e2fsck_setup_tdb(e2fsck_t ctx, io_manager *io_ptr)
1307 {
1308 errcode_t retval = ENOMEM;
1309 char *tdb_dir = NULL, *tdb_file = NULL;
1310 char *dev_name, *tmp_name;
1311 int free_tdb_dir = 0;
1312
1313 /* (re)open a specific undo file */
1314 if (ctx->undo_file && ctx->undo_file[0] != 0) {
1315 retval = set_undo_io_backing_manager(*io_ptr);
1316 if (retval)
1317 goto err;
1318 *io_ptr = undo_io_manager;
1319 retval = set_undo_io_backup_file(ctx->undo_file);
1320 if (retval)
1321 goto err;
1322 printf(_("Overwriting existing filesystem; this can be undone "
1323 "using the command:\n"
1324 " e2undo %s %s\n\n"),
1325 ctx->undo_file, ctx->filesystem_name);
1326 return retval;
1327 }
1328
1329 /*
1330 * Configuration via a conf file would be
1331 * nice
1332 */
1333 tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
1334 if (!tdb_dir) {
1335 profile_get_string(ctx->profile, "defaults",
1336 "undo_dir", 0, "/var/lib/e2fsprogs",
1337 &tdb_dir);
1338 free_tdb_dir = 1;
1339 }
1340
1341 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
1342 access(tdb_dir, W_OK)) {
1343 if (free_tdb_dir)
1344 free(tdb_dir);
1345 return 0;
1346 }
1347
1348 tmp_name = strdup(ctx->filesystem_name);
1349 if (!tmp_name)
1350 goto errout;
1351 dev_name = basename(tmp_name);
1352 tdb_file = malloc(strlen(tdb_dir) + 8 + strlen(dev_name) + 7 + 1);
1353 if (!tdb_file) {
1354 free(tmp_name);
1355 goto errout;
1356 }
1357 sprintf(tdb_file, "%s/e2fsck-%s.e2undo", tdb_dir, dev_name);
1358 free(tmp_name);
1359
1360 if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
1361 retval = errno;
1362 com_err(ctx->program_name, retval,
1363 _("while trying to delete %s"), tdb_file);
1364 goto errout;
1365 }
1366
1367 retval = set_undo_io_backing_manager(*io_ptr);
1368 if (retval)
1369 goto errout;
1370 *io_ptr = undo_io_manager;
1371 retval = set_undo_io_backup_file(tdb_file);
1372 if (retval)
1373 goto errout;
1374 printf(_("Overwriting existing filesystem; this can be undone "
1375 "using the command:\n"
1376 " e2undo %s %s\n\n"), tdb_file, ctx->filesystem_name);
1377
1378 if (free_tdb_dir)
1379 free(tdb_dir);
1380 free(tdb_file);
1381 return 0;
1382
1383 errout:
1384 if (free_tdb_dir)
1385 free(tdb_dir);
1386 free(tdb_file);
1387 err:
1388 com_err(ctx->program_name, retval, "%s",
1389 _("while trying to setup undo file\n"));
1390 return retval;
1391 }
1392
main(int argc,char * argv[])1393 int main (int argc, char *argv[])
1394 {
1395 errcode_t retval = 0, retval2 = 0, orig_retval = 0;
1396 int exit_value = FSCK_OK;
1397 ext2_filsys fs = 0;
1398 io_manager io_ptr;
1399 struct ext2_super_block *sb;
1400 const char *lib_ver_date;
1401 int my_ver, lib_ver;
1402 e2fsck_t ctx;
1403 blk64_t orig_superblock = ~(blk64_t)0;
1404 struct problem_context pctx;
1405 int flags, run_result, was_changed;
1406 int journal_size;
1407 int sysval, sys_page_size = 4096;
1408 int old_bitmaps;
1409 __u32 features[3];
1410 char *cp;
1411 enum quota_type qtype;
1412 struct ext2fs_journal_params jparams;
1413
1414 clear_problem_context(&pctx);
1415 sigcatcher_setup();
1416 #ifdef MTRACE
1417 mtrace();
1418 #endif
1419 #ifdef MCHECK
1420 mcheck(0);
1421 #endif
1422 #ifdef ENABLE_NLS
1423 setlocale(LC_MESSAGES, "");
1424 setlocale(LC_CTYPE, "");
1425 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1426 textdomain(NLS_CAT_NAME);
1427 set_com_err_gettext(gettext);
1428 #endif
1429 my_ver = ext2fs_parse_version_string(my_ver_string);
1430 lib_ver = ext2fs_get_library_version(0, &lib_ver_date);
1431 if (my_ver > lib_ver) {
1432 fprintf( stderr, "%s",
1433 _("Error: ext2fs library version out of date!\n"));
1434 show_version_only++;
1435 }
1436
1437 retval = PRS(argc, argv, &ctx);
1438 if (retval) {
1439 com_err("e2fsck", retval, "%s",
1440 _("while trying to initialize program"));
1441 exit(FSCK_ERROR);
1442 }
1443 reserve_stdio_fds();
1444
1445 set_up_logging(ctx);
1446 if (ctx->logf) {
1447 int i;
1448
1449 fputs("E2fsck run: ", ctx->logf);
1450 for (i = 0; i < argc; i++) {
1451 if (i)
1452 fputc(' ', ctx->logf);
1453 fputs(argv[i], ctx->logf);
1454 }
1455 fputc('\n', ctx->logf);
1456 }
1457 if (ctx->problem_logf) {
1458 int i;
1459
1460 fputs("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n",
1461 ctx->problem_logf);
1462 fprintf(ctx->problem_logf, "<problem_log time=\"%lu\">\n",
1463 (unsigned long) ctx->now);
1464 fprintf(ctx->problem_logf, "<invocation prog=\"%s\"",
1465 argv[0]);
1466 for (i = 1; i < argc; i++)
1467 fprintf(ctx->problem_logf, " arg%d=\"%s\"", i, argv[i]);
1468 fputs("/>\n", ctx->problem_logf);
1469 }
1470
1471 init_resource_track(&ctx->global_rtrack, NULL);
1472 if (!(ctx->options & E2F_OPT_PREEN) || show_version_only)
1473 log_err(ctx, "e2fsck %s (%s)\n", my_ver_string,
1474 my_ver_date);
1475
1476 if (show_version_only) {
1477 log_err(ctx, _("\tUsing %s, %s\n"),
1478 error_message(EXT2_ET_BASE), lib_ver_date);
1479 exit(FSCK_OK);
1480 }
1481
1482 check_mount(ctx);
1483
1484 if (!(ctx->options & E2F_OPT_PREEN) &&
1485 !(ctx->options & E2F_OPT_NO) &&
1486 !(ctx->options & E2F_OPT_YES)) {
1487 if (!ctx->interactive)
1488 fatal_error(ctx,
1489 _("need terminal for interactive repairs"));
1490 }
1491 ctx->superblock = ctx->use_superblock;
1492
1493 flags = EXT2_FLAG_SKIP_MMP | EXT2_FLAG_THREADS;
1494 restart:
1495 #ifdef CONFIG_TESTIO_DEBUG
1496 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1497 io_ptr = test_io_manager;
1498 test_io_backing_manager = unix_io_manager;
1499 } else
1500 #endif
1501 io_ptr = unix_io_manager;
1502 flags |= EXT2_FLAG_NOFREE_ON_ERROR;
1503 profile_get_boolean(ctx->profile, "options", "old_bitmaps", 0, 0,
1504 &old_bitmaps);
1505 if (!old_bitmaps)
1506 flags |= EXT2_FLAG_64BITS;
1507 if ((ctx->options & E2F_OPT_READONLY) == 0) {
1508 flags |= EXT2_FLAG_RW;
1509 if (!(ctx->mount_flags & EXT2_MF_ISROOT &&
1510 ctx->mount_flags & EXT2_MF_READONLY))
1511 flags |= EXT2_FLAG_EXCLUSIVE;
1512 if ((ctx->mount_flags & EXT2_MF_READONLY) &&
1513 (ctx->options & E2F_OPT_FORCE))
1514 flags &= ~EXT2_FLAG_EXCLUSIVE;
1515 }
1516
1517 if (ctx->undo_file) {
1518 retval = e2fsck_setup_tdb(ctx, &io_ptr);
1519 if (retval)
1520 exit(FSCK_ERROR);
1521 }
1522
1523 ctx->openfs_flags = flags;
1524 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1525
1526 if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) &&
1527 !(ctx->flags & E2F_FLAG_SB_SPECIFIED) &&
1528 ((retval == EXT2_ET_BAD_MAGIC) ||
1529 (retval == EXT2_ET_SB_CSUM_INVALID) ||
1530 (retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
1531 ((retval == 0) && (retval2 = ext2fs_check_desc(fs))))) {
1532 if (retval) {
1533 pctx.errcode = retval;
1534 fix_problem(ctx, PR_0_OPEN_FAILED, &pctx);
1535 }
1536 if (retval2) {
1537 pctx.errcode = retval2;
1538 fix_problem(ctx, PR_0_CHECK_DESC_FAILED, &pctx);
1539 }
1540 pctx.errcode = 0;
1541 if (retval2 == ENOMEM || retval2 == EXT2_ET_NO_MEMORY) {
1542 retval = retval2;
1543 goto failure;
1544 }
1545 if (fs->flags & EXT2_FLAG_NOFREE_ON_ERROR) {
1546 ext2fs_free(fs);
1547 fs = NULL;
1548 }
1549 if (!fs || (fs->group_desc_count > 1)) {
1550 log_out(ctx, _("%s: %s trying backup blocks...\n"),
1551 ctx->program_name,
1552 retval ? _("Superblock invalid,") :
1553 _("Group descriptors look bad..."));
1554 orig_superblock = ctx->superblock;
1555 get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr);
1556 if (fs)
1557 ext2fs_close_free(&fs);
1558 orig_retval = retval;
1559 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1560 if ((orig_retval == 0) && retval != 0) {
1561 if (fs)
1562 ext2fs_close_free(&fs);
1563 log_out(ctx, _("%s: %s while using the "
1564 "backup blocks"),
1565 ctx->program_name,
1566 error_message(retval));
1567 log_out(ctx, _("%s: going back to original "
1568 "superblock\n"),
1569 ctx->program_name);
1570 ctx->superblock = orig_superblock;
1571 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1572 }
1573 }
1574 }
1575 if (((retval == EXT2_ET_UNSUPP_FEATURE) ||
1576 (retval == EXT2_ET_RO_UNSUPP_FEATURE)) &&
1577 fs && fs->super) {
1578 sb = fs->super;
1579 features[0] = (sb->s_feature_compat &
1580 ~EXT2_LIB_FEATURE_COMPAT_SUPP);
1581 features[1] = (sb->s_feature_incompat &
1582 ~EXT2_LIB_FEATURE_INCOMPAT_SUPP);
1583 features[2] = (sb->s_feature_ro_compat &
1584 ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1585 if (features[0] || features[1] || features[2])
1586 goto print_unsupp_features;
1587 }
1588 failure:
1589 if (retval) {
1590 if (orig_retval)
1591 retval = orig_retval;
1592 com_err(ctx->program_name, retval, _("while trying to open %s"),
1593 ctx->filesystem_name);
1594 if (retval == EXT2_ET_REV_TOO_HIGH) {
1595 log_out(ctx, "%s",
1596 _("The filesystem revision is apparently "
1597 "too high for this version of e2fsck.\n"
1598 "(Or the filesystem superblock "
1599 "is corrupt)\n\n"));
1600 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1601 } else if (retval == EXT2_ET_SHORT_READ)
1602 log_out(ctx, "%s",
1603 _("Could this be a zero-length partition?\n"));
1604 else if ((retval == EPERM) || (retval == EACCES))
1605 log_out(ctx, _("You must have %s access to the "
1606 "filesystem or be root\n"),
1607 (ctx->options & E2F_OPT_READONLY) ?
1608 "r/o" : "r/w");
1609 else if (retval == ENXIO)
1610 log_out(ctx, "%s",
1611 _("Possibly non-existent or swap device?\n"));
1612 else if (retval == EBUSY)
1613 log_out(ctx, "%s", _("Filesystem mounted or opened "
1614 "exclusively by another program?\n"));
1615 else if (retval == ENOENT)
1616 log_out(ctx, "%s",
1617 _("Possibly non-existent device?\n"));
1618 #ifdef EROFS
1619 else if (retval == EROFS)
1620 log_out(ctx, "%s", _("Disk write-protected; use the "
1621 "-n option to do a read-only\n"
1622 "check of the device.\n"));
1623 #endif
1624 else {
1625 /*
1626 * Let's try once more will less consistency checking
1627 * so that we are able to recover from more errors
1628 * (e.g. some tool messing up some value in the sb).
1629 */
1630 if (((retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
1631 (retval == EXT2_ET_BAD_DESC_SIZE)) &&
1632 !(flags & EXT2_FLAG_IGNORE_SB_ERRORS)) {
1633 if (fs)
1634 ext2fs_close_free(&fs);
1635 log_out(ctx, _("%s: Trying to load superblock "
1636 "despite errors...\n"),
1637 ctx->program_name);
1638 flags |= EXT2_FLAG_IGNORE_SB_ERRORS;
1639 /*
1640 * If we tried backup sb, revert to the
1641 * original one now.
1642 */
1643 if (orig_superblock != ~(blk64_t)0)
1644 ctx->superblock = orig_superblock;
1645 goto restart;
1646 }
1647 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1648 if (retval == EXT2_ET_BAD_MAGIC)
1649 check_plausibility(ctx->filesystem_name,
1650 CHECK_FS_EXIST, NULL);
1651 }
1652 fatal_error(ctx, 0);
1653 }
1654 /*
1655 * We only update the master superblock because (a) paranoia;
1656 * we don't want to corrupt the backup superblocks, and (b) we
1657 * don't need to update the mount count and last checked
1658 * fields in the backup superblock (the kernel doesn't update
1659 * the backup superblocks anyway). With newer versions of the
1660 * library this flag is set by ext2fs_open2(), but we set this
1661 * here just to be sure. (No, we don't support e2fsck running
1662 * with some other libext2fs than the one that it was shipped
1663 * with, but just in case....)
1664 */
1665 fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
1666
1667 if (!(ctx->flags & E2F_FLAG_GOT_DEVSIZE)) {
1668 __u32 blocksize = EXT2_BLOCK_SIZE(fs->super);
1669 int need_restart = 0;
1670
1671 pctx.errcode = ext2fs_get_device_size2(ctx->filesystem_name,
1672 blocksize,
1673 &ctx->num_blocks);
1674 /*
1675 * The floppy driver refuses to allow anyone else to
1676 * open the device if has been opened with O_EXCL;
1677 * this is unlike other block device drivers in Linux.
1678 * To handle this, we close the filesystem and then
1679 * reopen the filesystem after we get the device size.
1680 */
1681 if (pctx.errcode == EBUSY) {
1682 ext2fs_close_free(&fs);
1683 need_restart++;
1684 pctx.errcode =
1685 ext2fs_get_device_size2(ctx->filesystem_name,
1686 blocksize,
1687 &ctx->num_blocks);
1688 }
1689 if (pctx.errcode == EXT2_ET_UNIMPLEMENTED)
1690 ctx->num_blocks = 0;
1691 else if (pctx.errcode) {
1692 fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx);
1693 ctx->flags |= E2F_FLAG_ABORT;
1694 fatal_error(ctx, 0);
1695 }
1696 ctx->flags |= E2F_FLAG_GOT_DEVSIZE;
1697 if (need_restart)
1698 goto restart;
1699 }
1700
1701 ctx->fs = fs;
1702 fs->now = ctx->now;
1703 sb = fs->super;
1704
1705 if (sb->s_rev_level > E2FSCK_CURRENT_REV) {
1706 com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH,
1707 _("while trying to open %s"),
1708 ctx->filesystem_name);
1709 get_newer:
1710 fatal_error(ctx, _("Get a newer version of e2fsck!"));
1711 }
1712
1713 /*
1714 * Set the device name, which is used whenever we print error
1715 * or informational messages to the user.
1716 */
1717 if (ctx->device_name == 0 && sb->s_volume_name[0])
1718 ctx->device_name = string_copy(ctx, (char *) sb->s_volume_name,
1719 sizeof(sb->s_volume_name));
1720
1721 if (ctx->device_name == 0)
1722 ctx->device_name = string_copy(ctx, ctx->filesystem_name, 0);
1723 for (cp = ctx->device_name; *cp; cp++)
1724 if (isspace(*cp) || *cp == ':')
1725 *cp = '_';
1726
1727 if (ctx->problem_logf) {
1728
1729 fprintf(ctx->problem_logf, "<filesystem dev=\"%s\"",
1730 ctx->filesystem_name);
1731 if (!uuid_is_null(sb->s_uuid)) {
1732 char buf[48];
1733
1734 uuid_unparse(sb->s_uuid, buf);
1735 fprintf(ctx->problem_logf, " uuid=\"%s\"", buf);
1736 }
1737 if (sb->s_volume_name[0])
1738 fprintf(ctx->problem_logf, " label=\"%.*s\"",
1739 EXT2_LEN_STR(sb->s_volume_name));
1740
1741 fputs("/>\n", ctx->problem_logf);
1742 }
1743
1744 ehandler_init(fs->io);
1745
1746 if (ext2fs_has_feature_mmp(fs->super) &&
1747 (flags & EXT2_FLAG_SKIP_MMP)) {
1748 if (e2fsck_check_mmp(fs, ctx))
1749 fatal_error(ctx, 0);
1750
1751 /*
1752 * Restart in order to reopen fs but this time start mmp.
1753 */
1754 ext2fs_close_free(&ctx->fs);
1755 flags &= ~EXT2_FLAG_SKIP_MMP;
1756 goto restart;
1757 }
1758
1759 if (ctx->logf)
1760 fprintf(ctx->logf, "Filesystem UUID: %s\n",
1761 e2p_uuid2str(sb->s_uuid));
1762
1763 /*
1764 * Make sure the ext3 superblock fields are consistent.
1765 */
1766 if ((ctx->mount_flags & (EXT2_MF_MOUNTED | EXT2_MF_BUSY)) == 0) {
1767 retval = e2fsck_check_ext3_journal(ctx);
1768 if (retval) {
1769 com_err(ctx->program_name, retval,
1770 _("while checking journal for %s"),
1771 ctx->device_name);
1772 fatal_error(ctx,
1773 _("Cannot proceed with file system check"));
1774 }
1775 }
1776
1777 /*
1778 * Check to see if we need to do ext3-style recovery. If so,
1779 * do it, and then restart the fsck.
1780 */
1781 if (ext2fs_has_feature_journal_needs_recovery(sb)) {
1782 if (ctx->options & E2F_OPT_READONLY) {
1783 log_out(ctx, "%s",
1784 _("Warning: skipping journal recovery because "
1785 "doing a read-only filesystem check.\n"));
1786 io_channel_flush(ctx->fs->io);
1787 } else {
1788 if (ctx->flags & E2F_FLAG_RESTARTED) {
1789 /*
1790 * Whoops, we attempted to run the
1791 * journal twice. This should never
1792 * happen, unless the hardware or
1793 * device driver is being bogus.
1794 */
1795 com_err(ctx->program_name, 0,
1796 _("unable to set superblock flags "
1797 "on %s\n"), ctx->device_name);
1798 fatal_error(ctx, 0);
1799 }
1800 retval = e2fsck_run_ext3_journal(ctx);
1801 if (retval == EFSBADCRC) {
1802 log_out(ctx, _("Journal checksum error "
1803 "found in %s\n"),
1804 ctx->device_name);
1805 } else if (retval == EFSCORRUPTED) {
1806 log_out(ctx, _("Journal corrupted in %s\n"),
1807 ctx->device_name);
1808 } else if (retval) {
1809 com_err(ctx->program_name, retval,
1810 _("while recovering journal of %s"),
1811 ctx->device_name);
1812 }
1813 ext2fs_close_free(&ctx->fs);
1814 ctx->flags |= E2F_FLAG_RESTARTED;
1815 goto restart;
1816 }
1817 }
1818
1819 /*
1820 * Check for compatibility with the feature sets. We need to
1821 * be more stringent than ext2fs_open().
1822 */
1823 features[0] = sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP;
1824 features[1] = sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP;
1825 features[2] = (sb->s_feature_ro_compat &
1826 ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1827 print_unsupp_features:
1828 if (features[0] || features[1] || features[2]) {
1829 int i, j;
1830 __u32 *mask = features, m;
1831
1832 log_err(ctx, _("%s has unsupported feature(s):"),
1833 ctx->filesystem_name);
1834
1835 for (i=0; i <3; i++,mask++) {
1836 for (j=0,m=1; j < 32; j++, m<<=1) {
1837 if (*mask & m)
1838 log_err(ctx, " %s",
1839 e2p_feature2string(i, m));
1840 }
1841 }
1842 log_err(ctx, "\n");
1843 goto get_newer;
1844 }
1845
1846 if (ext2fs_has_feature_casefold(sb) && !fs->encoding) {
1847 log_err(ctx, _("%s has unsupported encoding: %0x\n"),
1848 ctx->filesystem_name, sb->s_encoding);
1849 goto get_newer;
1850 }
1851
1852 /*
1853 * If the user specified a specific superblock, presumably the
1854 * master superblock has been trashed. So we mark the
1855 * superblock as dirty, so it can be written out.
1856 */
1857 if (ctx->superblock &&
1858 !(ctx->options & E2F_OPT_READONLY))
1859 ext2fs_mark_super_dirty(fs);
1860
1861 /*
1862 * Calculate the number of filesystem blocks per pagesize. If
1863 * fs->blocksize > page_size, set the number of blocks per
1864 * pagesize to 1 to avoid division by zero errors.
1865 */
1866 #ifdef _SC_PAGESIZE
1867 sysval = sysconf(_SC_PAGESIZE);
1868 if (sysval > 0)
1869 sys_page_size = sysval;
1870 #endif /* _SC_PAGESIZE */
1871 ctx->blocks_per_page = sys_page_size / fs->blocksize;
1872 if (ctx->blocks_per_page == 0)
1873 ctx->blocks_per_page = 1;
1874
1875 if (ctx->superblock)
1876 set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0);
1877 ext2fs_mark_valid(fs);
1878 check_super_block(ctx);
1879 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1880 fatal_error(ctx, 0);
1881 check_if_skip(ctx);
1882 check_resize_inode(ctx);
1883 if (bad_blocks_file)
1884 read_bad_blocks_file(ctx, bad_blocks_file, replace_bad_blocks);
1885 else if (cflag)
1886 read_bad_blocks_file(ctx, 0, !keep_bad_blocks); /* Test disk */
1887 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1888 fatal_error(ctx, 0);
1889
1890 /*
1891 * Mark the system as valid, 'til proven otherwise
1892 */
1893 ext2fs_mark_valid(fs);
1894
1895 retval = ext2fs_read_bb_inode(fs, &fs->badblocks);
1896 if (retval) {
1897 log_out(ctx, _("%s: %s while reading bad blocks inode\n"),
1898 ctx->program_name, error_message(retval));
1899 preenhalt(ctx);
1900 log_out(ctx, "%s", _("This doesn't bode well, "
1901 "but we'll try to go on...\n"));
1902 }
1903
1904 /*
1905 * Save the journal size in megabytes.
1906 * Try and use the journal size from the backup else let e2fsck
1907 * find the default journal size. If fast commit feature is enabled,
1908 * it is not clear how many of the journal blocks were fast commit
1909 * blocks. So, ignore the size of journal found in backup.
1910 *
1911 * TODO: Add a new backup type that captures fast commit info as
1912 * well.
1913 */
1914 if (sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS &&
1915 !ext2fs_has_feature_fast_commit(sb))
1916 journal_size = (sb->s_jnl_blocks[15] << (32 - 20)) |
1917 (sb->s_jnl_blocks[16] >> 20);
1918 else
1919 journal_size = -1;
1920
1921 if (ext2fs_has_feature_quota(sb)) {
1922 /* Quotas were enabled. Do quota accounting during fsck. */
1923 clear_problem_context(&pctx);
1924 pctx.errcode = quota_init_context(&ctx->qctx, ctx->fs, 0);
1925 if (pctx.errcode) {
1926 fix_problem(ctx, PR_0_QUOTA_INIT_CTX, &pctx);
1927 fatal_error(ctx, 0);
1928 }
1929 }
1930
1931 run_result = e2fsck_run(ctx);
1932 e2fsck_clear_progbar(ctx);
1933
1934 if (!ctx->invalid_bitmaps &&
1935 (ctx->flags & E2F_FLAG_JOURNAL_INODE)) {
1936 if (fix_problem(ctx, PR_6_RECREATE_JOURNAL, &pctx)) {
1937 if (journal_size < 1024) {
1938 ext2fs_get_journal_params(&jparams, fs);
1939 } else {
1940 jparams.num_journal_blocks = journal_size;
1941 jparams.num_fc_blocks = 0;
1942 }
1943 log_out(ctx, _("Creating journal (%d blocks): "),
1944 jparams.num_journal_blocks);
1945 fflush(stdout);
1946 retval = ext2fs_add_journal_inode3(fs, &jparams, ~0ULL, 0);
1947 if (retval) {
1948 log_out(ctx, "%s: while trying to create "
1949 "journal\n", error_message(retval));
1950 goto no_journal;
1951 }
1952 log_out(ctx, "%s", _(" Done.\n"));
1953 log_out(ctx, "%s",
1954 _("\n*** journal has been regenerated ***\n"));
1955 }
1956 }
1957 no_journal:
1958
1959 if (run_result & E2F_FLAG_ABORT) {
1960 fatal_error(ctx, _("aborted"));
1961 } else if (run_result & E2F_FLAG_CANCEL) {
1962 log_out(ctx, _("%s: e2fsck canceled.\n"), ctx->device_name ?
1963 ctx->device_name : ctx->filesystem_name);
1964 exit_value |= FSCK_CANCELED;
1965 } else if (ctx->qctx && !ctx->invalid_bitmaps) {
1966 int needs_writeout;
1967
1968 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1969 if (*quota_sb_inump(sb, qtype) == 0)
1970 continue;
1971 needs_writeout = 0;
1972 pctx.num = qtype;
1973 retval = quota_compare_and_update(ctx->qctx, qtype,
1974 &needs_writeout);
1975 if ((retval || needs_writeout) &&
1976 fix_problem(ctx, PR_6_UPDATE_QUOTAS, &pctx)) {
1977 pctx.errcode = quota_write_inode(ctx->qctx,
1978 1 << qtype);
1979 if (pctx.errcode)
1980 (void) fix_problem(ctx,
1981 PR_6_WRITE_QUOTAS, &pctx);
1982 }
1983 }
1984 quota_release_context(&ctx->qctx);
1985 }
1986
1987 if (run_result == E2F_FLAG_RESTART) {
1988 log_out(ctx, "%s",
1989 _("Restarting e2fsck from the beginning...\n"));
1990 retval = e2fsck_reset_context(ctx);
1991 if (retval) {
1992 com_err(ctx->program_name, retval, "%s",
1993 _("while resetting context"));
1994 fatal_error(ctx, 0);
1995 }
1996 ext2fs_close_free(&ctx->fs);
1997 goto restart;
1998 }
1999
2000 #ifdef MTRACE
2001 mtrace_print("Cleanup");
2002 #endif
2003 was_changed = ext2fs_test_changed(fs);
2004 if (!(ctx->flags & E2F_FLAG_RUN_RETURN) &&
2005 !(ctx->options & E2F_OPT_READONLY)) {
2006 if (ext2fs_test_valid(fs)) {
2007 if (!(sb->s_state & EXT2_VALID_FS))
2008 exit_value |= FSCK_NONDESTRUCT;
2009 sb->s_state = EXT2_VALID_FS;
2010 if (check_backup_super_block(ctx))
2011 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2012 } else
2013 sb->s_state &= ~EXT2_VALID_FS;
2014 if (!(ctx->flags & E2F_FLAG_TIME_INSANE))
2015 sb->s_lastcheck = ctx->now;
2016 sb->s_mnt_count = 0;
2017 memset(((char *) sb) + EXT4_S_ERR_START, 0, EXT4_S_ERR_LEN);
2018 pctx.errcode = ext2fs_set_gdt_csum(ctx->fs);
2019 if (pctx.errcode)
2020 fix_problem(ctx, PR_6_SET_BG_CHECKSUM, &pctx);
2021 ext2fs_mark_super_dirty(fs);
2022 }
2023
2024 if (ext2fs_has_feature_shared_blocks(ctx->fs->super) &&
2025 (ctx->options & E2F_OPT_UNSHARE_BLOCKS) &&
2026 (ctx->options & E2F_OPT_NO))
2027 /* Don't try to write or flush I/O, we just wanted to know whether or
2028 * not there were enough free blocks to undo deduplication.
2029 */
2030 goto skip_write;
2031
2032 if (!(ctx->options & E2F_OPT_READONLY)) {
2033 e2fsck_write_bitmaps(ctx);
2034 if (fs->flags & EXT2_FLAG_DIRTY) {
2035 pctx.errcode = ext2fs_flush(ctx->fs);
2036 if (pctx.errcode)
2037 fix_problem(ctx, PR_6_FLUSH_FILESYSTEM, &pctx);
2038 }
2039 pctx.errcode = io_channel_flush(ctx->fs->io);
2040 if (pctx.errcode)
2041 fix_problem(ctx, PR_6_IO_FLUSH, &pctx);
2042 }
2043
2044 if (was_changed) {
2045 int fs_fixed = (ctx->flags & E2F_FLAG_PROBLEMS_FIXED);
2046
2047 if (fs_fixed)
2048 exit_value |= FSCK_NONDESTRUCT;
2049 if (!(ctx->options & E2F_OPT_PREEN)) {
2050 #if 0 /* Do this later; it breaks too many tests' golden outputs */
2051 log_out(ctx, fs_fixed ?
2052 _("\n%s: ***** FILE SYSTEM ERRORS "
2053 "CORRECTED *****\n") :
2054 _("%s: File system was modified.\n"),
2055 ctx->device_name);
2056 #else
2057 log_out(ctx,
2058 _("\n%s: ***** FILE SYSTEM WAS MODIFIED *****\n"),
2059 ctx->device_name);
2060 #endif
2061 }
2062 if (ctx->mount_flags & EXT2_MF_ISROOT) {
2063 log_out(ctx, _("%s: ***** REBOOT SYSTEM *****\n"),
2064 ctx->device_name);
2065 exit_value |= FSCK_REBOOT;
2066 }
2067 }
2068
2069 skip_write:
2070 if (!ext2fs_test_valid(fs) ||
2071 ((exit_value & FSCK_CANCELED) &&
2072 (sb->s_state & EXT2_ERROR_FS))) {
2073 log_out(ctx, _("\n%s: ********** WARNING: Filesystem still has "
2074 "errors **********\n\n"), ctx->device_name);
2075 exit_value |= FSCK_UNCORRECTED;
2076 exit_value &= ~FSCK_NONDESTRUCT;
2077 }
2078 if (exit_value & FSCK_CANCELED) {
2079 int allow_cancellation;
2080
2081 profile_get_boolean(ctx->profile, "options",
2082 "allow_cancellation", 0, 0,
2083 &allow_cancellation);
2084 exit_value &= ~FSCK_NONDESTRUCT;
2085 if (allow_cancellation && ext2fs_test_valid(fs) &&
2086 (sb->s_state & EXT2_VALID_FS) &&
2087 !(sb->s_state & EXT2_ERROR_FS))
2088 exit_value = 0;
2089 } else
2090 show_stats(ctx);
2091
2092 print_resource_track(ctx, NULL, &ctx->global_rtrack, ctx->fs->io);
2093
2094 ext2fs_close_free(&ctx->fs);
2095 free(ctx->journal_name);
2096
2097 if (ctx->logf)
2098 fprintf(ctx->logf, "Exit status: %d\n", exit_value);
2099 e2fsck_free_context(ctx);
2100 remove_error_table(&et_ext2_error_table);
2101 remove_error_table(&et_prof_error_table);
2102 return exit_value;
2103 }
2104