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e2fsck: always make sure e2fsck_global_ctx is set
[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 log_out(ctx, _("Warning! %s is %s.\n"),
253 ctx->filesystem_name,
254 ctx->mount_flags & EXT2_MF_MOUNTED ?
255 "mounted" : "in use");
256 return;
257 }
258
259 log_out(ctx, _("%s is %s.\n"), ctx->filesystem_name,
260 ctx->mount_flags & EXT2_MF_MOUNTED ? "mounted" : "in use");
261 if (!ctx->interactive || ctx->mount_flags & EXT2_MF_BUSY)
262 fatal_error(ctx, _("Cannot continue, aborting.\n\n"));
263 puts("\007\007\007\007");
264 log_out(ctx, "%s", _("\n\nWARNING!!! "
265 "The filesystem is mounted. "
266 "If you continue you ***WILL***\n"
267 "cause ***SEVERE*** filesystem damage.\n\n"));
268 puts("\007\007\007");
269 cont = ask_yn(ctx, _("Do you really want to continue"), 0);
270 if (!cont) {
271 printf("%s", _("check aborted.\n"));
272 exit (0);
273 }
274 return;
275 }
276
277 static int is_on_batt(void)
278 {
279 FILE *f;
280 DIR *d;
281 char tmp[80], tmp2[80], fname[80];
282 unsigned int acflag;
283 struct dirent* de;
284
285 f = fopen("/sys/class/power_supply/AC/online", "r");
286 if (f) {
287 if (fscanf(f, "%u\n", &acflag) == 1) {
288 fclose(f);
289 return (!acflag);
290 }
291 fclose(f);
292 }
293 f = fopen("/proc/apm", "r");
294 if (f) {
295 if (fscanf(f, "%s %s %s %x", tmp, tmp, tmp, &acflag) != 4)
296 acflag = 1;
297 fclose(f);
298 return (acflag != 1);
299 }
300 d = opendir("/proc/acpi/ac_adapter");
301 if (d) {
302 while ((de=readdir(d)) != NULL) {
303 if (!strncmp(".", de->d_name, 1))
304 continue;
305 snprintf(fname, 80, "/proc/acpi/ac_adapter/%s/state",
306 de->d_name);
307 f = fopen(fname, "r");
308 if (!f)
309 continue;
310 if (fscanf(f, "%s %s", tmp2, tmp) != 2)
311 tmp[0] = 0;
312 fclose(f);
313 if (strncmp(tmp, "off-line", 8) == 0) {
314 closedir(d);
315 return 1;
316 }
317 }
318 closedir(d);
319 }
320 return 0;
321 }
322
323 /*
324 * This routine checks to see if a filesystem can be skipped; if so,
325 * it will exit with E2FSCK_OK. Under some conditions it will print a
326 * message explaining why a check is being forced.
327 */
328 static void check_if_skip(e2fsck_t ctx)
329 {
330 ext2_filsys fs = ctx->fs;
331 struct problem_context pctx;
332 const char *reason = NULL;
333 unsigned int reason_arg = 0;
334 long next_check;
335 int batt = is_on_batt();
336 int defer_check_on_battery;
337 int broken_system_clock;
338 time_t lastcheck;
339
340 profile_get_boolean(ctx->profile, "options", "broken_system_clock",
341 0, 0, &broken_system_clock);
342 if (ctx->flags & E2F_FLAG_TIME_INSANE)
343 broken_system_clock = 1;
344 profile_get_boolean(ctx->profile, "options",
345 "defer_check_on_battery", 0, 1,
346 &defer_check_on_battery);
347 if (!defer_check_on_battery)
348 batt = 0;
349
350 if ((ctx->options & E2F_OPT_FORCE) || bad_blocks_file || cflag)
351 return;
352
353 if (ctx->options & E2F_OPT_JOURNAL_ONLY)
354 goto skip;
355
356 lastcheck = fs->super->s_lastcheck;
357 if (lastcheck > ctx->now)
358 lastcheck -= ctx->time_fudge;
359 if ((fs->super->s_state & EXT2_ERROR_FS) ||
360 !ext2fs_test_valid(fs))
361 reason = _(" contains a file system with errors");
362 else if ((fs->super->s_state & EXT2_VALID_FS) == 0)
363 reason = _(" was not cleanly unmounted");
364 else if (check_backup_super_block(ctx))
365 reason = _(" primary superblock features different from backup");
366 else if ((fs->super->s_max_mnt_count > 0) &&
367 (fs->super->s_mnt_count >=
368 (unsigned) fs->super->s_max_mnt_count)) {
369 reason = _(" has been mounted %u times without being checked");
370 reason_arg = fs->super->s_mnt_count;
371 if (batt && (fs->super->s_mnt_count <
372 (unsigned) fs->super->s_max_mnt_count*2))
373 reason = 0;
374 } else if (!broken_system_clock && fs->super->s_checkinterval &&
375 (ctx->now < lastcheck)) {
376 reason = _(" has filesystem last checked time in the future");
377 if (batt)
378 reason = 0;
379 } else if (!broken_system_clock && fs->super->s_checkinterval &&
380 ((ctx->now - lastcheck) >=
381 ((time_t) fs->super->s_checkinterval))) {
382 reason = _(" has gone %u days without being checked");
383 reason_arg = (ctx->now - fs->super->s_lastcheck)/(3600*24);
384 if (batt && ((ctx->now - fs->super->s_lastcheck) <
385 fs->super->s_checkinterval*2))
386 reason = 0;
387 }
388 if (reason) {
389 log_out(ctx, "%s", ctx->device_name);
390 log_out(ctx, reason, reason_arg);
391 log_out(ctx, "%s", _(", check forced.\n"));
392 return;
393 }
394
395 /*
396 * Update the global counts from the block group counts. This
397 * is needed since modern kernels don't update the global
398 * counts so as to avoid locking the entire file system. So
399 * if the filesystem is not unmounted cleanly, the global
400 * counts may not be accurate. Update them here if we can,
401 * for the benefit of users who might examine the file system
402 * using dumpe2fs. (This is for cosmetic reasons only.)
403 */
404 clear_problem_context(&pctx);
405 pctx.ino = fs->super->s_free_inodes_count;
406 pctx.ino2 = ctx->free_inodes;
407 if ((pctx.ino != pctx.ino2) &&
408 !(ctx->options & E2F_OPT_READONLY) &&
409 fix_problem(ctx, PR_0_FREE_INODE_COUNT, &pctx)) {
410 fs->super->s_free_inodes_count = ctx->free_inodes;
411 ext2fs_mark_super_dirty(fs);
412 }
413 clear_problem_context(&pctx);
414 pctx.blk = ext2fs_free_blocks_count(fs->super);
415 pctx.blk2 = ctx->free_blocks;
416 if ((pctx.blk != pctx.blk2) &&
417 !(ctx->options & E2F_OPT_READONLY) &&
418 fix_problem(ctx, PR_0_FREE_BLOCK_COUNT, &pctx)) {
419 ext2fs_free_blocks_count_set(fs->super, ctx->free_blocks);
420 ext2fs_mark_super_dirty(fs);
421 }
422
423 /* Print the summary message when we're skipping a full check */
424 log_out(ctx, _("%s: clean, %u/%u files, %llu/%llu blocks"),
425 ctx->device_name,
426 fs->super->s_inodes_count - fs->super->s_free_inodes_count,
427 fs->super->s_inodes_count,
428 ext2fs_blocks_count(fs->super) -
429 ext2fs_free_blocks_count(fs->super),
430 ext2fs_blocks_count(fs->super));
431 next_check = 100000;
432 if (fs->super->s_max_mnt_count > 0) {
433 next_check = fs->super->s_max_mnt_count - fs->super->s_mnt_count;
434 if (next_check <= 0)
435 next_check = 1;
436 }
437 if (!broken_system_clock && fs->super->s_checkinterval &&
438 ((ctx->now - fs->super->s_lastcheck) >= fs->super->s_checkinterval))
439 next_check = 1;
440 if (next_check <= 5) {
441 if (next_check == 1) {
442 if (batt)
443 log_out(ctx, "%s",
444 _(" (check deferred; on battery)"));
445 else
446 log_out(ctx, "%s",
447 _(" (check after next mount)"));
448 } else
449 log_out(ctx, _(" (check in %ld mounts)"),
450 next_check);
451 }
452 log_out(ctx, "\n");
453 skip:
454 ext2fs_close(fs);
455 ctx->fs = NULL;
456 e2fsck_free_context(ctx);
457 exit(FSCK_OK);
458 }
459
460 /*
461 * For completion notice
462 */
463 struct percent_tbl {
464 int max_pass;
465 int table[32];
466 };
467 static struct percent_tbl e2fsck_tbl = {
468 5, { 0, 70, 90, 92, 95, 100 }
469 };
470 static char bar[128], spaces[128];
471
472 static float calc_percent(struct percent_tbl *tbl, int pass, int curr,
473 int max)
474 {
475 float percent;
476
477 if (pass <= 0)
478 return 0.0;
479 if (pass > tbl->max_pass || max == 0)
480 return 100.0;
481 percent = ((float) curr) / ((float) max);
482 return ((percent * (tbl->table[pass] - tbl->table[pass-1]))
483 + tbl->table[pass-1]);
484 }
485
486 void e2fsck_clear_progbar(e2fsck_t ctx)
487 {
488 if (!(ctx->flags & E2F_FLAG_PROG_BAR))
489 return;
490
491 printf("%s%s\r%s", ctx->start_meta, spaces + (sizeof(spaces) - 80),
492 ctx->stop_meta);
493 fflush(stdout);
494 ctx->flags &= ~E2F_FLAG_PROG_BAR;
495 }
496
497 int e2fsck_simple_progress(e2fsck_t ctx, const char *label, float percent,
498 unsigned int dpynum)
499 {
500 static const char spinner[] = "\\|/-";
501 int i;
502 unsigned int tick;
503 struct timeval tv;
504 int dpywidth;
505 int fixed_percent;
506
507 if (ctx->flags & E2F_FLAG_PROG_SUPPRESS)
508 return 0;
509
510 /*
511 * Calculate the new progress position. If the
512 * percentage hasn't changed, then we skip out right
513 * away.
514 */
515 fixed_percent = (int) ((10 * percent) + 0.5);
516 if (ctx->progress_last_percent == fixed_percent)
517 return 0;
518 ctx->progress_last_percent = fixed_percent;
519
520 /*
521 * If we've already updated the spinner once within
522 * the last 1/8th of a second, no point doing it
523 * again.
524 */
525 gettimeofday(&tv, NULL);
526 tick = (tv.tv_sec << 3) + (tv.tv_usec / (1000000 / 8));
527 if ((tick == ctx->progress_last_time) &&
528 (fixed_percent != 0) && (fixed_percent != 1000))
529 return 0;
530 ctx->progress_last_time = tick;
531
532 /*
533 * Advance the spinner, and note that the progress bar
534 * will be on the screen
535 */
536 ctx->progress_pos = (ctx->progress_pos+1) & 3;
537 ctx->flags |= E2F_FLAG_PROG_BAR;
538
539 dpywidth = 66 - strlen(label);
540 dpywidth = 8 * (dpywidth / 8);
541 if (dpynum)
542 dpywidth -= 8;
543
544 i = ((percent * dpywidth) + 50) / 100;
545 printf("%s%s: |%s%s", ctx->start_meta, label,
546 bar + (sizeof(bar) - (i+1)),
547 spaces + (sizeof(spaces) - (dpywidth - i + 1)));
548 if (fixed_percent == 1000)
549 fputc('|', stdout);
550 else
551 fputc(spinner[ctx->progress_pos & 3], stdout);
552 printf(" %4.1f%% ", percent);
553 if (dpynum)
554 printf("%u\r", dpynum);
555 else
556 fputs(" \r", stdout);
557 fputs(ctx->stop_meta, stdout);
558
559 if (fixed_percent == 1000)
560 e2fsck_clear_progbar(ctx);
561 fflush(stdout);
562
563 return 0;
564 }
565
566 static int e2fsck_update_progress(e2fsck_t ctx, int pass,
567 unsigned long cur, unsigned long max)
568 {
569 char buf[1024];
570 float percent;
571
572 if (pass == 0)
573 return 0;
574
575 if (ctx->progress_fd) {
576 snprintf(buf, sizeof(buf), "%d %lu %lu %s\n",
577 pass, cur, max, ctx->device_name);
578 write_all(ctx->progress_fd, buf, strlen(buf));
579 } else {
580 percent = calc_percent(&e2fsck_tbl, pass, cur, max);
581 e2fsck_simple_progress(ctx, ctx->device_name,
582 percent, 0);
583 }
584 return 0;
585 }
586
587 #define PATH_SET "PATH=/sbin"
588
589 /*
590 * Make sure 0,1,2 file descriptors are open, so that we don't open
591 * the filesystem using the same file descriptor as stdout or stderr.
592 */
593 static void reserve_stdio_fds(void)
594 {
595 int fd = 0;
596
597 while (fd <= 2) {
598 fd = open("/dev/null", O_RDWR);
599 if (fd < 0) {
600 fprintf(stderr, _("ERROR: Couldn't open "
601 "/dev/null (%s)\n"),
602 strerror(errno));
603 break;
604 }
605 }
606 }
607
608 #ifdef HAVE_SIGNAL_H
609 static void signal_progress_on(int sig EXT2FS_ATTR((unused)))
610 {
611 e2fsck_t ctx = e2fsck_global_ctx;
612
613 if (!ctx)
614 return;
615
616 ctx->progress = e2fsck_update_progress;
617 }
618
619 static void signal_progress_off(int sig EXT2FS_ATTR((unused)))
620 {
621 e2fsck_t ctx = e2fsck_global_ctx;
622
623 if (!ctx)
624 return;
625
626 e2fsck_clear_progbar(ctx);
627 ctx->progress = 0;
628 }
629
630 static void signal_cancel(int sig EXT2FS_ATTR((unused)))
631 {
632 e2fsck_t ctx = e2fsck_global_ctx;
633
634 if (!ctx)
635 exit(FSCK_CANCELED);
636
637 ctx->flags |= E2F_FLAG_CANCEL;
638 }
639 #endif
640
641 static void parse_extended_opts(e2fsck_t ctx, const char *opts)
642 {
643 char *buf, *token, *next, *p, *arg;
644 int ea_ver;
645 int extended_usage = 0;
646
647 buf = string_copy(ctx, opts, 0);
648 for (token = buf; token && *token; token = next) {
649 p = strchr(token, ',');
650 next = 0;
651 if (p) {
652 *p = 0;
653 next = p+1;
654 }
655 arg = strchr(token, '=');
656 if (arg) {
657 *arg = 0;
658 arg++;
659 }
660 if (strcmp(token, "ea_ver") == 0) {
661 if (!arg) {
662 extended_usage++;
663 continue;
664 }
665 ea_ver = strtoul(arg, &p, 0);
666 if (*p ||
667 ((ea_ver != 1) && (ea_ver != 2))) {
668 fprintf(stderr, "%s",
669 _("Invalid EA version.\n"));
670 extended_usage++;
671 continue;
672 }
673 ctx->ext_attr_ver = ea_ver;
674 } else if (strcmp(token, "fragcheck") == 0) {
675 ctx->options |= E2F_OPT_FRAGCHECK;
676 continue;
677 } else if (strcmp(token, "journal_only") == 0) {
678 if (arg) {
679 extended_usage++;
680 continue;
681 }
682 ctx->options |= E2F_OPT_JOURNAL_ONLY;
683 } else if (strcmp(token, "discard") == 0) {
684 ctx->options |= E2F_OPT_DISCARD;
685 continue;
686 } else if (strcmp(token, "nodiscard") == 0) {
687 ctx->options &= ~E2F_OPT_DISCARD;
688 continue;
689 } else if (strcmp(token, "log_filename") == 0) {
690 if (!arg)
691 extended_usage++;
692 else
693 ctx->log_fn = string_copy(ctx, arg, 0);
694 continue;
695 } else {
696 fprintf(stderr, _("Unknown extended option: %s\n"),
697 token);
698 extended_usage++;
699 }
700 }
701 free(buf);
702
703 if (extended_usage) {
704 fputs(("\nExtended options are separated by commas, "
705 "and may take an argument which\n"
706 "is set off by an equals ('=') sign. "
707 "Valid extended options are:\n"), stderr);
708 fputs(("\tea_ver=<ea_version (1 or 2)>\n"), stderr);
709 fputs(("\tfragcheck\n"), stderr);
710 fputs(("\tjournal_only\n"), stderr);
711 fputs(("\tdiscard\n"), stderr);
712 fputs(("\tnodiscard\n"), stderr);
713 fputc('\n', stderr);
714 exit(1);
715 }
716 }
717
718 static void syntax_err_report(const char *filename, long err, int line_num)
719 {
720 fprintf(stderr,
721 _("Syntax error in e2fsck config file (%s, line #%d)\n\t%s\n"),
722 filename, line_num, error_message(err));
723 exit(FSCK_ERROR);
724 }
725
726 static const char *config_fn[] = { ROOT_SYSCONFDIR "/e2fsck.conf", 0 };
727
728 static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx)
729 {
730 int flush = 0;
731 int c, fd;
732 #ifdef MTRACE
733 extern void *mallwatch;
734 #endif
735 e2fsck_t ctx;
736 errcode_t retval;
737 #ifdef HAVE_SIGNAL_H
738 struct sigaction sa;
739 #endif
740 char *extended_opts = 0;
741 char *cp;
742 int res; /* result of sscanf */
743 #ifdef CONFIG_JBD_DEBUG
744 char *jbd_debug;
745 #endif
746
747 retval = e2fsck_allocate_context(&ctx);
748 if (retval)
749 return retval;
750
751 *ret_ctx = ctx;
752 e2fsck_global_ctx = ctx;
753
754 setvbuf(stdout, NULL, _IONBF, BUFSIZ);
755 setvbuf(stderr, NULL, _IONBF, BUFSIZ);
756 if (isatty(0) && isatty(1)) {
757 ctx->interactive = 1;
758 } else {
759 ctx->start_meta[0] = '\001';
760 ctx->stop_meta[0] = '\002';
761 }
762 memset(bar, '=', sizeof(bar)-1);
763 memset(spaces, ' ', sizeof(spaces)-1);
764 add_error_table(&et_ext2_error_table);
765 add_error_table(&et_prof_error_table);
766 blkid_get_cache(&ctx->blkid, NULL);
767
768 if (argc && *argv)
769 ctx->program_name = *argv;
770 else
771 ctx->program_name = "e2fsck";
772
773 while ((c = getopt (argc, argv, "panyrcC:B:dE:fvtFVM:b:I:j:P:l:L:N:SsDk")) != EOF)
774 switch (c) {
775 case 'C':
776 ctx->progress = e2fsck_update_progress;
777 res = sscanf(optarg, "%d", &ctx->progress_fd);
778 if (res != 1)
779 goto sscanf_err;
780
781 if (ctx->progress_fd < 0) {
782 ctx->progress = 0;
783 ctx->progress_fd = ctx->progress_fd * -1;
784 }
785 if (!ctx->progress_fd)
786 break;
787 /* Validate the file descriptor to avoid disasters */
788 fd = dup(ctx->progress_fd);
789 if (fd < 0) {
790 fprintf(stderr,
791 _("Error validating file descriptor %d: %s\n"),
792 ctx->progress_fd,
793 error_message(errno));
794 fatal_error(ctx,
795 _("Invalid completion information file descriptor"));
796 } else
797 close(fd);
798 break;
799 case 'D':
800 ctx->options |= E2F_OPT_COMPRESS_DIRS;
801 break;
802 case 'E':
803 extended_opts = optarg;
804 break;
805 case 'p':
806 case 'a':
807 if (ctx->options & (E2F_OPT_YES|E2F_OPT_NO)) {
808 conflict_opt:
809 fatal_error(ctx,
810 _("Only one of the options -p/-a, -n or -y may be specified."));
811 }
812 ctx->options |= E2F_OPT_PREEN;
813 break;
814 case 'n':
815 if (ctx->options & (E2F_OPT_YES|E2F_OPT_PREEN))
816 goto conflict_opt;
817 ctx->options |= E2F_OPT_NO;
818 break;
819 case 'y':
820 if (ctx->options & (E2F_OPT_PREEN|E2F_OPT_NO))
821 goto conflict_opt;
822 ctx->options |= E2F_OPT_YES;
823 break;
824 case 't':
825 #ifdef RESOURCE_TRACK
826 if (ctx->options & E2F_OPT_TIME)
827 ctx->options |= E2F_OPT_TIME2;
828 else
829 ctx->options |= E2F_OPT_TIME;
830 #else
831 fprintf(stderr, _("The -t option is not "
832 "supported on this version of e2fsck.\n"));
833 #endif
834 break;
835 case 'c':
836 if (cflag++)
837 ctx->options |= E2F_OPT_WRITECHECK;
838 ctx->options |= E2F_OPT_CHECKBLOCKS;
839 break;
840 case 'r':
841 /* What we do by default, anyway! */
842 break;
843 case 'b':
844 res = sscanf(optarg, "%llu", &ctx->use_superblock);
845 if (res != 1)
846 goto sscanf_err;
847 ctx->flags |= E2F_FLAG_SB_SPECIFIED;
848 break;
849 case 'B':
850 ctx->blocksize = atoi(optarg);
851 break;
852 case 'I':
853 res = sscanf(optarg, "%d", &ctx->inode_buffer_blocks);
854 if (res != 1)
855 goto sscanf_err;
856 break;
857 case 'j':
858 ctx->journal_name = blkid_get_devname(ctx->blkid,
859 optarg, NULL);
860 if (!ctx->journal_name) {
861 com_err(ctx->program_name, 0,
862 _("Unable to resolve '%s'"),
863 optarg);
864 fatal_error(ctx, 0);
865 }
866 break;
867 case 'P':
868 res = sscanf(optarg, "%d", &ctx->process_inode_size);
869 if (res != 1)
870 goto sscanf_err;
871 break;
872 case 'L':
873 replace_bad_blocks++;
874 case 'l':
875 if (bad_blocks_file)
876 free(bad_blocks_file);
877 bad_blocks_file = string_copy(ctx, optarg, 0);
878 break;
879 case 'd':
880 ctx->options |= E2F_OPT_DEBUG;
881 break;
882 case 'f':
883 ctx->options |= E2F_OPT_FORCE;
884 break;
885 case 'F':
886 flush = 1;
887 break;
888 case 'v':
889 verbose = 1;
890 break;
891 case 'V':
892 show_version_only = 1;
893 break;
894 #ifdef MTRACE
895 case 'M':
896 mallwatch = (void *) strtol(optarg, NULL, 0);
897 break;
898 #endif
899 case 'N':
900 ctx->device_name = string_copy(ctx, optarg, 0);
901 break;
902 case 'k':
903 keep_bad_blocks++;
904 break;
905 default:
906 usage(ctx);
907 }
908 if (show_version_only)
909 return 0;
910 if (optind != argc - 1)
911 usage(ctx);
912 if ((ctx->options & E2F_OPT_NO) &&
913 (ctx->options & E2F_OPT_COMPRESS_DIRS)) {
914 com_err(ctx->program_name, 0, "%s",
915 _("The -n and -D options are incompatible."));
916 fatal_error(ctx, 0);
917 }
918 if ((ctx->options & E2F_OPT_NO) && cflag) {
919 com_err(ctx->program_name, 0, "%s",
920 _("The -n and -c options are incompatible."));
921 fatal_error(ctx, 0);
922 }
923 if ((ctx->options & E2F_OPT_NO) && bad_blocks_file) {
924 com_err(ctx->program_name, 0, "%s",
925 _("The -n and -l/-L options are incompatible."));
926 fatal_error(ctx, 0);
927 }
928 if (ctx->options & E2F_OPT_NO)
929 ctx->options |= E2F_OPT_READONLY;
930
931 ctx->io_options = strchr(argv[optind], '?');
932 if (ctx->io_options)
933 *ctx->io_options++ = 0;
934 ctx->filesystem_name = blkid_get_devname(ctx->blkid, argv[optind], 0);
935 if (!ctx->filesystem_name) {
936 com_err(ctx->program_name, 0, _("Unable to resolve '%s'"),
937 argv[optind]);
938 fatal_error(ctx, 0);
939 }
940 if (extended_opts)
941 parse_extended_opts(ctx, extended_opts);
942
943 if ((cp = getenv("E2FSCK_CONFIG")) != NULL)
944 config_fn[0] = cp;
945 profile_set_syntax_err_cb(syntax_err_report);
946 profile_init(config_fn, &ctx->profile);
947
948 profile_get_boolean(ctx->profile, "options", "report_time", 0, 0,
949 &c);
950 if (c)
951 ctx->options |= E2F_OPT_TIME | E2F_OPT_TIME2;
952 profile_get_boolean(ctx->profile, "options", "report_verbose", 0, 0,
953 &c);
954 if (c)
955 verbose = 1;
956
957 /* Turn off discard in read-only mode */
958 if ((ctx->options & E2F_OPT_NO) &&
959 (ctx->options & E2F_OPT_DISCARD))
960 ctx->options &= ~E2F_OPT_DISCARD;
961
962 if (flush) {
963 fd = open(ctx->filesystem_name, O_RDONLY, 0);
964 if (fd < 0) {
965 com_err("open", errno,
966 _("while opening %s for flushing"),
967 ctx->filesystem_name);
968 fatal_error(ctx, 0);
969 }
970 if ((retval = ext2fs_sync_device(fd, 1))) {
971 com_err("ext2fs_sync_device", retval,
972 _("while trying to flush %s"),
973 ctx->filesystem_name);
974 fatal_error(ctx, 0);
975 }
976 close(fd);
977 }
978 if (cflag && bad_blocks_file) {
979 fprintf(stderr, "%s", _("The -c and the -l/-L options may not "
980 "be both used at the same time.\n"));
981 exit(FSCK_USAGE);
982 }
983 #ifdef HAVE_SIGNAL_H
984 /*
985 * Set up signal action
986 */
987 memset(&sa, 0, sizeof(struct sigaction));
988 sa.sa_handler = signal_cancel;
989 sigaction(SIGINT, &sa, 0);
990 sigaction(SIGTERM, &sa, 0);
991 #ifdef SA_RESTART
992 sa.sa_flags = SA_RESTART;
993 #endif
994 sa.sa_handler = signal_progress_on;
995 sigaction(SIGUSR1, &sa, 0);
996 sa.sa_handler = signal_progress_off;
997 sigaction(SIGUSR2, &sa, 0);
998 #endif
999
1000 /* Update our PATH to include /sbin if we need to run badblocks */
1001 if (cflag) {
1002 char *oldpath = getenv("PATH");
1003 char *newpath;
1004 int len = sizeof(PATH_SET) + 1;
1005
1006 if (oldpath)
1007 len += strlen(oldpath);
1008
1009 newpath = malloc(len);
1010 if (!newpath)
1011 fatal_error(ctx, "Couldn't malloc() newpath");
1012 strcpy(newpath, PATH_SET);
1013
1014 if (oldpath) {
1015 strcat(newpath, ":");
1016 strcat(newpath, oldpath);
1017 }
1018 putenv(newpath);
1019 }
1020 #ifdef CONFIG_JBD_DEBUG
1021 jbd_debug = getenv("E2FSCK_JBD_DEBUG");
1022 if (jbd_debug) {
1023 res = sscanf(jbd_debug, "%d", &journal_enable_debug);
1024 if (res != 1) {
1025 fprintf(stderr,
1026 _("E2FSCK_JBD_DEBUG \"%s\" not an integer\n\n"),
1027 jbd_debug);
1028 exit (1);
1029 }
1030 }
1031 #endif
1032 return 0;
1033
1034 sscanf_err:
1035 fprintf(stderr, _("\nInvalid non-numeric argument to -%c (\"%s\")\n\n"),
1036 c, optarg);
1037 exit (1);
1038 }
1039
1040 static errcode_t try_open_fs(e2fsck_t ctx, int flags, io_manager io_ptr,
1041 ext2_filsys *ret_fs)
1042 {
1043 errcode_t retval;
1044
1045 *ret_fs = NULL;
1046 if (ctx->superblock && ctx->blocksize) {
1047 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1048 flags, ctx->superblock, ctx->blocksize,
1049 io_ptr, ret_fs);
1050 } else if (ctx->superblock) {
1051 int blocksize;
1052 for (blocksize = EXT2_MIN_BLOCK_SIZE;
1053 blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) {
1054 if (*ret_fs) {
1055 ext2fs_free(*ret_fs);
1056 *ret_fs = NULL;
1057 }
1058 retval = ext2fs_open2(ctx->filesystem_name,
1059 ctx->io_options, flags,
1060 ctx->superblock, blocksize,
1061 io_ptr, ret_fs);
1062 if (!retval)
1063 break;
1064 }
1065 } else
1066 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1067 flags, 0, 0, io_ptr, ret_fs);
1068
1069 if (retval == 0)
1070 e2fsck_set_bitmap_type(*ret_fs, EXT2FS_BMAP64_RBTREE,
1071 "default", NULL);
1072 return retval;
1073 }
1074
1075 static const char *my_ver_string = E2FSPROGS_VERSION;
1076 static const char *my_ver_date = E2FSPROGS_DATE;
1077
1078 static errcode_t e2fsck_check_mmp(ext2_filsys fs, e2fsck_t ctx)
1079 {
1080 struct mmp_struct *mmp_s;
1081 unsigned int mmp_check_interval;
1082 errcode_t retval = 0;
1083 struct problem_context pctx;
1084 unsigned int wait_time = 0;
1085
1086 clear_problem_context(&pctx);
1087 if (fs->mmp_buf == NULL) {
1088 retval = ext2fs_get_mem(fs->blocksize, &fs->mmp_buf);
1089 if (retval)
1090 goto check_error;
1091 }
1092
1093 retval = ext2fs_mmp_read(fs, fs->super->s_mmp_block, fs->mmp_buf);
1094 if (retval)
1095 goto check_error;
1096
1097 mmp_s = fs->mmp_buf;
1098
1099 mmp_check_interval = fs->super->s_mmp_update_interval;
1100 if (mmp_check_interval < EXT4_MMP_MIN_CHECK_INTERVAL)
1101 mmp_check_interval = EXT4_MMP_MIN_CHECK_INTERVAL;
1102
1103 /*
1104 * If check_interval in MMP block is larger, use that instead of
1105 * check_interval from the superblock.
1106 */
1107 if (mmp_s->mmp_check_interval > mmp_check_interval)
1108 mmp_check_interval = mmp_s->mmp_check_interval;
1109
1110 wait_time = mmp_check_interval * 2 + 1;
1111
1112 if (mmp_s->mmp_seq == EXT4_MMP_SEQ_CLEAN)
1113 retval = 0;
1114 else if (mmp_s->mmp_seq == EXT4_MMP_SEQ_FSCK)
1115 retval = EXT2_ET_MMP_FSCK_ON;
1116 else if (mmp_s->mmp_seq > EXT4_MMP_SEQ_MAX)
1117 retval = EXT2_ET_MMP_UNKNOWN_SEQ;
1118
1119 if (retval)
1120 goto check_error;
1121
1122 /* Print warning if e2fck will wait for more than 20 secs. */
1123 if (verbose || wait_time > EXT4_MMP_MIN_CHECK_INTERVAL * 4) {
1124 log_out(ctx, _("MMP interval is %u seconds and total wait "
1125 "time is %u seconds. Please wait...\n"),
1126 mmp_check_interval, wait_time * 2);
1127 }
1128
1129 return 0;
1130
1131 check_error:
1132
1133 if (retval == EXT2_ET_MMP_BAD_BLOCK) {
1134 if (fix_problem(ctx, PR_0_MMP_INVALID_BLK, &pctx)) {
1135 fs->super->s_mmp_block = 0;
1136 ext2fs_mark_super_dirty(fs);
1137 retval = 0;
1138 }
1139 } else if (retval == EXT2_ET_MMP_FAILED) {
1140 com_err(ctx->program_name, retval, "%s",
1141 _("while checking MMP block"));
1142 dump_mmp_msg(fs->mmp_buf, NULL);
1143 } else if (retval == EXT2_ET_MMP_FSCK_ON ||
1144 retval == EXT2_ET_MMP_UNKNOWN_SEQ) {
1145 com_err(ctx->program_name, retval, "%s",
1146 _("while checking MMP block"));
1147 dump_mmp_msg(fs->mmp_buf,
1148 _("If you are sure the filesystem is not "
1149 "in use on any node, run:\n"
1150 "'tune2fs -f -E clear_mmp {device}'\n"));
1151 } else if (retval == EXT2_ET_MMP_MAGIC_INVALID) {
1152 if (fix_problem(ctx, PR_0_MMP_INVALID_MAGIC, &pctx)) {
1153 ext2fs_mmp_clear(fs);
1154 retval = 0;
1155 }
1156 }
1157 return retval;
1158 }
1159
1160 int main (int argc, char *argv[])
1161 {
1162 errcode_t retval = 0, retval2 = 0, orig_retval = 0;
1163 int exit_value = FSCK_OK;
1164 ext2_filsys fs = 0;
1165 io_manager io_ptr;
1166 struct ext2_super_block *sb;
1167 const char *lib_ver_date;
1168 int my_ver, lib_ver;
1169 e2fsck_t ctx;
1170 blk64_t orig_superblock;
1171 struct problem_context pctx;
1172 int flags, run_result;
1173 int journal_size;
1174 int sysval, sys_page_size = 4096;
1175 int old_bitmaps;
1176 __u32 features[3];
1177 char *cp;
1178 int qtype = -99; /* quota type */
1179
1180 clear_problem_context(&pctx);
1181 sigcatcher_setup();
1182 #ifdef MTRACE
1183 mtrace();
1184 #endif
1185 #ifdef MCHECK
1186 mcheck(0);
1187 #endif
1188 #ifdef ENABLE_NLS
1189 setlocale(LC_MESSAGES, "");
1190 setlocale(LC_CTYPE, "");
1191 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1192 textdomain(NLS_CAT_NAME);
1193 set_com_err_gettext(gettext);
1194 #endif
1195 my_ver = ext2fs_parse_version_string(my_ver_string);
1196 lib_ver = ext2fs_get_library_version(0, &lib_ver_date);
1197 if (my_ver > lib_ver) {
1198 fprintf( stderr, "%s",
1199 _("Error: ext2fs library version out of date!\n"));
1200 show_version_only++;
1201 }
1202
1203 retval = PRS(argc, argv, &ctx);
1204 if (retval) {
1205 com_err("e2fsck", retval, "%s",
1206 _("while trying to initialize program"));
1207 exit(FSCK_ERROR);
1208 }
1209 reserve_stdio_fds();
1210
1211 set_up_logging(ctx);
1212 if (ctx->logf) {
1213 int i;
1214 fputs("E2fsck run: ", ctx->logf);
1215 for (i = 0; i < argc; i++) {
1216 if (i)
1217 fputc(' ', ctx->logf);
1218 fputs(argv[i], ctx->logf);
1219 }
1220 fputc('\n', ctx->logf);
1221 }
1222
1223 init_resource_track(&ctx->global_rtrack, NULL);
1224 if (!(ctx->options & E2F_OPT_PREEN) || show_version_only)
1225 log_err(ctx, "e2fsck %s (%s)\n", my_ver_string,
1226 my_ver_date);
1227
1228 if (show_version_only) {
1229 log_err(ctx, _("\tUsing %s, %s\n"),
1230 error_message(EXT2_ET_BASE), lib_ver_date);
1231 exit(FSCK_OK);
1232 }
1233
1234 check_mount(ctx);
1235
1236 if (!(ctx->options & E2F_OPT_PREEN) &&
1237 !(ctx->options & E2F_OPT_NO) &&
1238 !(ctx->options & E2F_OPT_YES)) {
1239 if (!ctx->interactive)
1240 fatal_error(ctx,
1241 _("need terminal for interactive repairs"));
1242 }
1243 ctx->superblock = ctx->use_superblock;
1244
1245 flags = EXT2_FLAG_SKIP_MMP;
1246 restart:
1247 #ifdef CONFIG_TESTIO_DEBUG
1248 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1249 io_ptr = test_io_manager;
1250 test_io_backing_manager = unix_io_manager;
1251 } else
1252 #endif
1253 io_ptr = unix_io_manager;
1254 flags |= EXT2_FLAG_NOFREE_ON_ERROR;
1255 profile_get_boolean(ctx->profile, "options", "old_bitmaps", 0, 0,
1256 &old_bitmaps);
1257 if (!old_bitmaps)
1258 flags |= EXT2_FLAG_64BITS;
1259 if ((ctx->options & E2F_OPT_READONLY) == 0) {
1260 flags |= EXT2_FLAG_RW;
1261 if (!(ctx->mount_flags & EXT2_MF_ISROOT &&
1262 ctx->mount_flags & EXT2_MF_READONLY))
1263 flags |= EXT2_FLAG_EXCLUSIVE;
1264 if ((ctx->mount_flags & EXT2_MF_READONLY) &&
1265 (ctx->options & E2F_OPT_FORCE))
1266 flags &= ~EXT2_FLAG_EXCLUSIVE;
1267 }
1268
1269 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1270
1271 if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) &&
1272 !(ctx->flags & E2F_FLAG_SB_SPECIFIED) &&
1273 ((retval == EXT2_ET_BAD_MAGIC) ||
1274 (retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
1275 ((retval == 0) && (retval2 = ext2fs_check_desc(fs))))) {
1276 if (retval) {
1277 pctx.errcode = retval;
1278 fix_problem(ctx, PR_0_OPEN_FAILED, &pctx);
1279 }
1280 if (retval2) {
1281 pctx.errcode = retval2;
1282 fix_problem(ctx, PR_0_CHECK_DESC_FAILED, &pctx);
1283 }
1284 pctx.errcode = 0;
1285 if (retval2 == ENOMEM || retval2 == EXT2_ET_NO_MEMORY) {
1286 retval = retval2;
1287 goto failure;
1288 }
1289 if (fs->flags & EXT2_FLAG_NOFREE_ON_ERROR) {
1290 ext2fs_free(fs);
1291 fs = NULL;
1292 }
1293 if (!fs || (fs->group_desc_count > 1)) {
1294 log_out(ctx, _("%s: %s trying backup blocks...\n"),
1295 ctx->program_name,
1296 retval ? _("Superblock invalid,") :
1297 _("Group descriptors look bad..."));
1298 orig_superblock = ctx->superblock;
1299 get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr);
1300 if (fs)
1301 ext2fs_close(fs);
1302 orig_retval = retval;
1303 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1304 if ((orig_retval == 0) && retval != 0) {
1305 if (fs)
1306 ext2fs_close(fs);
1307 log_out(ctx, _("%s: %s while using the "
1308 "backup blocks"),
1309 ctx->program_name,
1310 error_message(retval));
1311 log_out(ctx, _("%s: going back to original "
1312 "superblock\n"),
1313 ctx->program_name);
1314 ctx->superblock = orig_superblock;
1315 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1316 }
1317 }
1318 }
1319 if (((retval == EXT2_ET_UNSUPP_FEATURE) ||
1320 (retval == EXT2_ET_RO_UNSUPP_FEATURE)) &&
1321 fs && fs->super) {
1322 sb = fs->super;
1323 features[0] = (sb->s_feature_compat &
1324 ~EXT2_LIB_FEATURE_COMPAT_SUPP);
1325 features[1] = (sb->s_feature_incompat &
1326 ~EXT2_LIB_FEATURE_INCOMPAT_SUPP);
1327 features[2] = (sb->s_feature_ro_compat &
1328 ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1329 if (features[0] || features[1] || features[2])
1330 goto print_unsupp_features;
1331 }
1332 failure:
1333 if (retval) {
1334 if (orig_retval)
1335 retval = orig_retval;
1336 com_err(ctx->program_name, retval, _("while trying to open %s"),
1337 ctx->filesystem_name);
1338 if (retval == EXT2_ET_REV_TOO_HIGH) {
1339 log_out(ctx, "%s",
1340 _("The filesystem revision is apparently "
1341 "too high for this version of e2fsck.\n"
1342 "(Or the filesystem superblock "
1343 "is corrupt)\n\n"));
1344 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1345 } else if (retval == EXT2_ET_SHORT_READ)
1346 log_out(ctx, "%s",
1347 _("Could this be a zero-length partition?\n"));
1348 else if ((retval == EPERM) || (retval == EACCES))
1349 log_out(ctx, _("You must have %s access to the "
1350 "filesystem or be root\n"),
1351 (ctx->options & E2F_OPT_READONLY) ?
1352 "r/o" : "r/w");
1353 else if (retval == ENXIO)
1354 log_out(ctx, "%s",
1355 _("Possibly non-existent or swap device?\n"));
1356 else if (retval == EBUSY)
1357 log_out(ctx, "%s", _("Filesystem mounted or opened "
1358 "exclusively by another program?\n"));
1359 else if (retval == ENOENT)
1360 log_out(ctx, "%s",
1361 _("Possibly non-existent device?\n"));
1362 #ifdef EROFS
1363 else if (retval == EROFS)
1364 log_out(ctx, "%s", _("Disk write-protected; use the "
1365 "-n option to do a read-only\n"
1366 "check of the device.\n"));
1367 #endif
1368 else
1369 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1370 fatal_error(ctx, 0);
1371 }
1372 /*
1373 * We only update the master superblock because (a) paranoia;
1374 * we don't want to corrupt the backup superblocks, and (b) we
1375 * don't need to update the mount count and last checked
1376 * fields in the backup superblock (the kernel doesn't update
1377 * the backup superblocks anyway). With newer versions of the
1378 * library this flag is set by ext2fs_open2(), but we set this
1379 * here just to be sure. (No, we don't support e2fsck running
1380 * with some other libext2fs than the one that it was shipped
1381 * with, but just in case....)
1382 */
1383 fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
1384
1385 if (!(ctx->flags & E2F_FLAG_GOT_DEVSIZE)) {
1386 __u32 blocksize = EXT2_BLOCK_SIZE(fs->super);
1387 int need_restart = 0;
1388
1389 pctx.errcode = ext2fs_get_device_size2(ctx->filesystem_name,
1390 blocksize,
1391 &ctx->num_blocks);
1392 /*
1393 * The floppy driver refuses to allow anyone else to
1394 * open the device if has been opened with O_EXCL;
1395 * this is unlike other block device drivers in Linux.
1396 * To handle this, we close the filesystem and then
1397 * reopen the filesystem after we get the device size.
1398 */
1399 if (pctx.errcode == EBUSY) {
1400 ext2fs_close(fs);
1401 need_restart++;
1402 pctx.errcode =
1403 ext2fs_get_device_size2(ctx->filesystem_name,
1404 blocksize,
1405 &ctx->num_blocks);
1406 }
1407 if (pctx.errcode == EXT2_ET_UNIMPLEMENTED)
1408 ctx->num_blocks = 0;
1409 else if (pctx.errcode) {
1410 fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx);
1411 ctx->flags |= E2F_FLAG_ABORT;
1412 fatal_error(ctx, 0);
1413 }
1414 ctx->flags |= E2F_FLAG_GOT_DEVSIZE;
1415 if (need_restart)
1416 goto restart;
1417 }
1418
1419 ctx->fs = fs;
1420 fs->priv_data = ctx;
1421 fs->now = ctx->now;
1422 sb = fs->super;
1423
1424 if (sb->s_rev_level > E2FSCK_CURRENT_REV) {
1425 com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH,
1426 _("while trying to open %s"),
1427 ctx->filesystem_name);
1428 get_newer:
1429 fatal_error(ctx, _("Get a newer version of e2fsck!"));
1430 }
1431
1432 /*
1433 * Set the device name, which is used whenever we print error
1434 * or informational messages to the user.
1435 */
1436 if (ctx->device_name == 0 &&
1437 (sb->s_volume_name[0] != 0)) {
1438 ctx->device_name = string_copy(ctx, sb->s_volume_name,
1439 sizeof(sb->s_volume_name));
1440 }
1441 if (ctx->device_name == 0)
1442 ctx->device_name = string_copy(ctx, ctx->filesystem_name, 0);
1443 for (cp = ctx->device_name; *cp; cp++)
1444 if (isspace(*cp) || *cp == ':')
1445 *cp = '_';
1446
1447 ehandler_init(fs->io);
1448
1449 if ((fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_MMP) &&
1450 (flags & EXT2_FLAG_SKIP_MMP)) {
1451 if (e2fsck_check_mmp(fs, ctx))
1452 fatal_error(ctx, 0);
1453
1454 /*
1455 * Restart in order to reopen fs but this time start mmp.
1456 */
1457 ext2fs_close(fs);
1458 ctx->fs = NULL;
1459 flags &= ~EXT2_FLAG_SKIP_MMP;
1460 goto restart;
1461 }
1462
1463 if (ctx->logf)
1464 fprintf(ctx->logf, "Filesystem UUID: %s\n",
1465 e2p_uuid2str(sb->s_uuid));
1466
1467 /*
1468 * Make sure the ext3 superblock fields are consistent.
1469 */
1470 retval = e2fsck_check_ext3_journal(ctx);
1471 if (retval) {
1472 com_err(ctx->program_name, retval,
1473 _("while checking ext3 journal for %s"),
1474 ctx->device_name);
1475 fatal_error(ctx, 0);
1476 }
1477
1478 /*
1479 * Check to see if we need to do ext3-style recovery. If so,
1480 * do it, and then restart the fsck.
1481 */
1482 if (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) {
1483 if (ctx->options & E2F_OPT_READONLY) {
1484 log_out(ctx, "%s",
1485 _("Warning: skipping journal recovery because "
1486 "doing a read-only filesystem check.\n"));
1487 io_channel_flush(ctx->fs->io);
1488 } else {
1489 if (ctx->flags & E2F_FLAG_RESTARTED) {
1490 /*
1491 * Whoops, we attempted to run the
1492 * journal twice. This should never
1493 * happen, unless the hardware or
1494 * device driver is being bogus.
1495 */
1496 com_err(ctx->program_name, 0,
1497 _("unable to set superblock flags "
1498 "on %s\n"), ctx->device_name);
1499 fatal_error(ctx, 0);
1500 }
1501 retval = e2fsck_run_ext3_journal(ctx);
1502 if (retval) {
1503 com_err(ctx->program_name, retval,
1504 _("while recovering ext3 journal of %s"),
1505 ctx->device_name);
1506 fatal_error(ctx, 0);
1507 }
1508 ext2fs_close(ctx->fs);
1509 ctx->fs = 0;
1510 ctx->flags |= E2F_FLAG_RESTARTED;
1511 goto restart;
1512 }
1513 }
1514
1515 /*
1516 * Check for compatibility with the feature sets. We need to
1517 * be more stringent than ext2fs_open().
1518 */
1519 features[0] = sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP;
1520 features[1] = sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP;
1521 features[2] = (sb->s_feature_ro_compat &
1522 ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1523 print_unsupp_features:
1524 if (features[0] || features[1] || features[2]) {
1525 int i, j;
1526 __u32 *mask = features, m;
1527
1528 log_err(ctx, _("%s has unsupported feature(s):"),
1529 ctx->filesystem_name);
1530
1531 for (i=0; i <3; i++,mask++) {
1532 for (j=0,m=1; j < 32; j++, m<<=1) {
1533 if (*mask & m)
1534 log_err(ctx, " %s",
1535 e2p_feature2string(i, m));
1536 }
1537 }
1538 log_err(ctx, "\n");
1539 goto get_newer;
1540 }
1541 #ifdef ENABLE_COMPRESSION
1542 if (sb->s_feature_incompat & EXT2_FEATURE_INCOMPAT_COMPRESSION)
1543 log_err(ctx, _("%s: warning: compression support "
1544 "is experimental.\n"),
1545 ctx->program_name);
1546 #endif
1547 #ifndef ENABLE_HTREE
1548 if (sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) {
1549 log_err(ctx, _("%s: e2fsck not compiled with HTREE support,\n\t"
1550 "but filesystem %s has HTREE directories.\n"),
1551 ctx->program_name, ctx->device_name);
1552 goto get_newer;
1553 }
1554 #endif
1555
1556 /*
1557 * If the user specified a specific superblock, presumably the
1558 * master superblock has been trashed. So we mark the
1559 * superblock as dirty, so it can be written out.
1560 */
1561 if (ctx->superblock &&
1562 !(ctx->options & E2F_OPT_READONLY))
1563 ext2fs_mark_super_dirty(fs);
1564
1565 /*
1566 * Calculate the number of filesystem blocks per pagesize. If
1567 * fs->blocksize > page_size, set the number of blocks per
1568 * pagesize to 1 to avoid division by zero errors.
1569 */
1570 #ifdef _SC_PAGESIZE
1571 sysval = sysconf(_SC_PAGESIZE);
1572 if (sysval > 0)
1573 sys_page_size = sysval;
1574 #endif /* _SC_PAGESIZE */
1575 ctx->blocks_per_page = sys_page_size / fs->blocksize;
1576 if (ctx->blocks_per_page == 0)
1577 ctx->blocks_per_page = 1;
1578
1579 if (ctx->superblock)
1580 set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0);
1581 ext2fs_mark_valid(fs);
1582 check_super_block(ctx);
1583 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1584 fatal_error(ctx, 0);
1585 check_if_skip(ctx);
1586 check_resize_inode(ctx);
1587 if (bad_blocks_file)
1588 read_bad_blocks_file(ctx, bad_blocks_file, replace_bad_blocks);
1589 else if (cflag)
1590 read_bad_blocks_file(ctx, 0, !keep_bad_blocks); /* Test disk */
1591 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1592 fatal_error(ctx, 0);
1593
1594 /*
1595 * Mark the system as valid, 'til proven otherwise
1596 */
1597 ext2fs_mark_valid(fs);
1598
1599 retval = ext2fs_read_bb_inode(fs, &fs->badblocks);
1600 if (retval) {
1601 log_out(ctx, _("%s: %s while reading bad blocks inode\n"),
1602 ctx->program_name, error_message(retval));
1603 preenhalt(ctx);
1604 log_out(ctx, "%s", _("This doesn't bode well, "
1605 "but we'll try to go on...\n"));
1606 }
1607
1608 /*
1609 * Save the journal size in megabytes.
1610 * Try and use the journal size from the backup else let e2fsck
1611 * find the default journal size.
1612 */
1613 if (sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS)
1614 journal_size = (sb->s_jnl_blocks[15] << (32 - 20)) |
1615 (sb->s_jnl_blocks[16] >> 20);
1616 else
1617 journal_size = -1;
1618
1619 if (sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_QUOTA) {
1620 /* Quotas were enabled. Do quota accounting during fsck. */
1621 if ((sb->s_usr_quota_inum && sb->s_grp_quota_inum) ||
1622 (!sb->s_usr_quota_inum && !sb->s_grp_quota_inum))
1623 qtype = -1;
1624 else
1625 qtype = sb->s_usr_quota_inum ? USRQUOTA : GRPQUOTA;
1626
1627 quota_init_context(&ctx->qctx, ctx->fs, qtype);
1628 }
1629
1630 run_result = e2fsck_run(ctx);
1631 e2fsck_clear_progbar(ctx);
1632
1633 if (ctx->flags & E2F_FLAG_JOURNAL_INODE) {
1634 if (fix_problem(ctx, PR_6_RECREATE_JOURNAL, &pctx)) {
1635 if (journal_size < 1024)
1636 journal_size = ext2fs_default_journal_size(ext2fs_blocks_count(fs->super));
1637 if (journal_size < 0) {
1638 fs->super->s_feature_compat &=
1639 ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
1640 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1641 log_out(ctx, "%s: Couldn't determine "
1642 "journal size\n", ctx->program_name);
1643 goto no_journal;
1644 }
1645 log_out(ctx, _("Creating journal (%d blocks): "),
1646 journal_size);
1647 fflush(stdout);
1648 retval = ext2fs_add_journal_inode(fs,
1649 journal_size, 0);
1650 if (retval) {
1651 log_out(ctx, "%s: while trying to create "
1652 "journal\n", error_message(retval));
1653 goto no_journal;
1654 }
1655 log_out(ctx, "%s", _(" Done.\n"));
1656 log_out(ctx, "%s",
1657 _("\n*** journal has been re-created - "
1658 "filesystem is now ext3 again ***\n"));
1659 }
1660 }
1661 no_journal:
1662
1663 if (ctx->qctx) {
1664 int i, needs_writeout;
1665 for (i = 0; i < MAXQUOTAS; i++) {
1666 if (qtype != -1 && qtype != i)
1667 continue;
1668 needs_writeout = 0;
1669 pctx.num = i;
1670 retval = quota_compare_and_update(ctx->qctx, i,
1671 &needs_writeout);
1672 if ((retval || needs_writeout) &&
1673 fix_problem(ctx, PR_6_UPDATE_QUOTAS, &pctx))
1674 quota_write_inode(ctx->qctx, i);
1675 }
1676 quota_release_context(&ctx->qctx);
1677 }
1678
1679 if (run_result == E2F_FLAG_RESTART) {
1680 log_out(ctx, "%s",
1681 _("Restarting e2fsck from the beginning...\n"));
1682 retval = e2fsck_reset_context(ctx);
1683 if (retval) {
1684 com_err(ctx->program_name, retval, "%s",
1685 _("while resetting context"));
1686 fatal_error(ctx, 0);
1687 }
1688 ext2fs_close(fs);
1689 goto restart;
1690 }
1691 if (run_result & E2F_FLAG_CANCEL) {
1692 log_out(ctx, _("%s: e2fsck canceled.\n"), ctx->device_name ?
1693 ctx->device_name : ctx->filesystem_name);
1694 exit_value |= FSCK_CANCELED;
1695 }
1696 if (run_result & E2F_FLAG_ABORT)
1697 fatal_error(ctx, _("aborted"));
1698 if (check_backup_super_block(ctx)) {
1699 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1700 ext2fs_mark_super_dirty(fs);
1701 }
1702
1703 #ifdef MTRACE
1704 mtrace_print("Cleanup");
1705 #endif
1706 if (ext2fs_test_changed(fs)) {
1707 exit_value |= FSCK_NONDESTRUCT;
1708 if (!(ctx->options & E2F_OPT_PREEN))
1709 log_out(ctx, _("\n%s: ***** FILE SYSTEM WAS "
1710 "MODIFIED *****\n"),
1711 ctx->device_name);
1712 if (ctx->mount_flags & EXT2_MF_ISROOT) {
1713 log_out(ctx, _("%s: ***** REBOOT LINUX *****\n"),
1714 ctx->device_name);
1715 exit_value |= FSCK_REBOOT;
1716 }
1717 }
1718 if (!ext2fs_test_valid(fs) ||
1719 ((exit_value & FSCK_CANCELED) &&
1720 (sb->s_state & EXT2_ERROR_FS))) {
1721 log_out(ctx, _("\n%s: ********** WARNING: Filesystem still has "
1722 "errors **********\n\n"), ctx->device_name);
1723 exit_value |= FSCK_UNCORRECTED;
1724 exit_value &= ~FSCK_NONDESTRUCT;
1725 }
1726 if (exit_value & FSCK_CANCELED) {
1727 int allow_cancellation;
1728
1729 profile_get_boolean(ctx->profile, "options",
1730 "allow_cancellation", 0, 0,
1731 &allow_cancellation);
1732 exit_value &= ~FSCK_NONDESTRUCT;
1733 if (allow_cancellation && ext2fs_test_valid(fs) &&
1734 (sb->s_state & EXT2_VALID_FS) &&
1735 !(sb->s_state & EXT2_ERROR_FS))
1736 exit_value = 0;
1737 } else {
1738 show_stats(ctx);
1739 if (!(ctx->options & E2F_OPT_READONLY)) {
1740 if (ext2fs_test_valid(fs)) {
1741 if (!(sb->s_state & EXT2_VALID_FS))
1742 exit_value |= FSCK_NONDESTRUCT;
1743 sb->s_state = EXT2_VALID_FS;
1744 } else
1745 sb->s_state &= ~EXT2_VALID_FS;
1746 sb->s_mnt_count = 0;
1747 if (!(ctx->flags & E2F_FLAG_TIME_INSANE))
1748 sb->s_lastcheck = ctx->now;
1749 memset(((char *) sb) + EXT4_S_ERR_START, 0,
1750 EXT4_S_ERR_LEN);
1751 ext2fs_mark_super_dirty(fs);
1752 }
1753 }
1754
1755 if ((run_result & E2F_FLAG_CANCEL) == 0 &&
1756 sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_GDT_CSUM &&
1757 !(ctx->options & E2F_OPT_READONLY)) {
1758 retval = ext2fs_set_gdt_csum(ctx->fs);
1759 if (retval) {
1760 com_err(ctx->program_name, retval, "%s",
1761 _("while setting block group checksum info"));
1762 fatal_error(ctx, 0);
1763 }
1764 }
1765
1766 e2fsck_write_bitmaps(ctx);
1767 io_channel_flush(ctx->fs->io);
1768 print_resource_track(ctx, NULL, &ctx->global_rtrack, ctx->fs->io);
1769
1770 ext2fs_close(fs);
1771 ctx->fs = NULL;
1772 free(ctx->journal_name);
1773
1774 e2fsck_free_context(ctx);
1775 remove_error_table(&et_ext2_error_table);
1776 remove_error_table(&et_prof_error_table);
1777 return exit_value;
1778 }
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