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 <stdio.h>
15 #ifdef HAVE_STDLIB_H
16 #include <stdlib.h>
17 #endif
18 #include <string.h>
19 #include <fcntl.h>
20 #include <ctype.h>
21 #include <time.h>
22 #ifdef HAVE_SIGNAL_H
23 #include <signal.h>
24 #endif
25 #ifdef HAVE_GETOPT_H
26 #include <getopt.h>
27 #else
28 extern char *optarg;
29 extern int optind;
30 #endif
31 #include <unistd.h>
32 #ifdef HAVE_ERRNO_H
33 #include <errno.h>
34 #endif
35 #ifdef HAVE_SYS_IOCTL_H
36 #include <sys/ioctl.h>
37 #endif
38 #ifdef HAVE_MALLOC_H
39 #include <malloc.h>
40 #endif
41 #ifdef HAVE_SYS_TYPES_H
42 #include <sys/types.h>
43 #endif
44 #ifdef HAVE_DIRENT_H
45 #include <dirent.h>
46 #endif
47
48 #include "e2p/e2p.h"
49 #include "et/com_err.h"
50 #include "e2p/e2p.h"
51 #include "e2fsck.h"
52 #include "problem.h"
53 #include "../version.h"
54
55 /* Command line options */
56 static int cflag; /* check disk */
57 static int show_version_only;
58 static int verbose;
59
60 static int replace_bad_blocks;
61 static int keep_bad_blocks;
62 static char *bad_blocks_file;
63
64 e2fsck_t e2fsck_global_ctx; /* Try your very best not to use this! */
65
66 #ifdef CONFIG_JBD_DEBUG /* Enabled by configure --enable-jfs-debug */
67 int journal_enable_debug = -1;
68 #endif
69
70 #ifndef ROOT_SYSCONFDIR
71 #define ROOT_SYSCONFDIR "/etc"
72 #endif
73
usage(e2fsck_t ctx)74 static void usage(e2fsck_t ctx)
75 {
76 fprintf(stderr,
77 _("Usage: %s [-panyrcdfvtDFV] [-b superblock] [-B blocksize]\n"
78 "\t\t[-I inode_buffer_blocks] [-P process_inode_size]\n"
79 "\t\t[-l|-L bad_blocks_file] [-C fd] [-j external_journal]\n"
80 "\t\t[-E extended-options] device\n"),
81 ctx->program_name);
82
83 fprintf(stderr, "%s", _("\nEmergency help:\n"
84 " -p Automatic repair (no questions)\n"
85 " -n Make no changes to the filesystem\n"
86 " -y Assume \"yes\" to all questions\n"
87 " -c Check for bad blocks and add them to the badblock list\n"
88 " -f Force checking even if filesystem is marked clean\n"));
89 fprintf(stderr, "%s", _(""
90 " -v Be verbose\n"
91 " -b superblock Use alternative superblock\n"
92 " -B blocksize Force blocksize when looking for superblock\n"
93 " -j external_journal Set location of the external journal\n"
94 " -l bad_blocks_file Add to badblocks list\n"
95 " -L bad_blocks_file Set badblocks list\n"
96 ));
97
98 exit(FSCK_USAGE);
99 }
100
show_stats(e2fsck_t ctx)101 static void show_stats(e2fsck_t ctx)
102 {
103 ext2_filsys fs = ctx->fs;
104 ext2_ino_t inodes, inodes_used;
105 blk64_t blocks, blocks_used;
106 unsigned int dir_links;
107 unsigned int num_files, num_links;
108 __u32 *mask, m;
109 int frag_percent_file, frag_percent_dir, frag_percent_total;
110 int i, j, printed = 0;
111
112 dir_links = 2 * ctx->fs_directory_count - 1;
113 num_files = ctx->fs_total_count - dir_links;
114 num_links = ctx->fs_links_count - dir_links;
115 inodes = fs->super->s_inodes_count;
116 inodes_used = (fs->super->s_inodes_count -
117 fs->super->s_free_inodes_count);
118 blocks = ext2fs_blocks_count(fs->super);
119 blocks_used = (ext2fs_blocks_count(fs->super) -
120 ext2fs_free_blocks_count(fs->super));
121
122 frag_percent_file = (10000 * ctx->fs_fragmented) / inodes_used;
123 frag_percent_file = (frag_percent_file + 5) / 10;
124
125 frag_percent_dir = (10000 * ctx->fs_fragmented_dir) / inodes_used;
126 frag_percent_dir = (frag_percent_dir + 5) / 10;
127
128 frag_percent_total = ((10000 * (ctx->fs_fragmented +
129 ctx->fs_fragmented_dir))
130 / inodes_used);
131 frag_percent_total = (frag_percent_total + 5) / 10;
132
133 if (!verbose) {
134 log_out(ctx, _("%s: %u/%u files (%0d.%d%% non-contiguous), "
135 "%llu/%llu blocks\n"),
136 ctx->device_name, inodes_used, inodes,
137 frag_percent_total / 10, frag_percent_total % 10,
138 blocks_used, blocks);
139 return;
140 }
141 profile_get_boolean(ctx->profile, "options", "report_features", 0, 0,
142 &i);
143 if (verbose && i) {
144 log_out(ctx, "\nFilesystem features:");
145 mask = &ctx->fs->super->s_feature_compat;
146 for (i = 0; i < 3; i++, mask++) {
147 for (j = 0, m = 1; j < 32; j++, m <<= 1) {
148 if (*mask & m) {
149 log_out(ctx, " %s",
150 e2p_feature2string(i, m));
151 printed++;
152 }
153 }
154 }
155 if (printed == 0)
156 log_out(ctx, " (none)");
157 log_out(ctx, "\n");
158 }
159
160 log_out(ctx, P_("\n%12u inode used (%2.2f%%, out of %u)\n",
161 "\n%12u inodes used (%2.2f%%, out of %u)\n",
162 inodes_used), inodes_used,
163 100.0 * inodes_used / inodes, inodes);
164 log_out(ctx, P_("%12u non-contiguous file (%0d.%d%%)\n",
165 "%12u non-contiguous files (%0d.%d%%)\n",
166 ctx->fs_fragmented),
167 ctx->fs_fragmented, frag_percent_file / 10,
168 frag_percent_file % 10);
169 log_out(ctx, P_("%12u non-contiguous directory (%0d.%d%%)\n",
170 "%12u non-contiguous directories (%0d.%d%%)\n",
171 ctx->fs_fragmented_dir),
172 ctx->fs_fragmented_dir, frag_percent_dir / 10,
173 frag_percent_dir % 10);
174 log_out(ctx, _(" # of inodes with ind/dind/tind blocks: "
175 "%u/%u/%u\n"),
176 ctx->fs_ind_count, ctx->fs_dind_count, ctx->fs_tind_count);
177
178 for (j=MAX_EXTENT_DEPTH_COUNT-1; j >=0; j--)
179 if (ctx->extent_depth_count[j])
180 break;
181 if (++j) {
182 log_out(ctx, "%s", _(" Extent depth histogram: "));
183 for (i=0; i < j; i++) {
184 if (i)
185 fputc('/', stdout);
186 log_out(ctx, "%u", ctx->extent_depth_count[i]);
187 }
188 log_out(ctx, "\n");
189 }
190
191 log_out(ctx, P_("%12llu block used (%2.2f%%, out of %llu)\n",
192 "%12llu blocks used (%2.2f%%, out of %llu)\n",
193 blocks_used),
194 blocks_used, 100.0 * blocks_used / blocks, blocks);
195 log_out(ctx, P_("%12u bad block\n", "%12u bad blocks\n",
196 ctx->fs_badblocks_count), ctx->fs_badblocks_count);
197 log_out(ctx, P_("%12u large file\n", "%12u large files\n",
198 ctx->large_files), ctx->large_files);
199 log_out(ctx, P_("\n%12u regular file\n", "\n%12u regular files\n",
200 ctx->fs_regular_count), ctx->fs_regular_count);
201 log_out(ctx, P_("%12u directory\n", "%12u directories\n",
202 ctx->fs_directory_count), ctx->fs_directory_count);
203 log_out(ctx, P_("%12u character device file\n",
204 "%12u character device files\n", ctx->fs_chardev_count),
205 ctx->fs_chardev_count);
206 log_out(ctx, P_("%12u block device file\n", "%12u block device files\n",
207 ctx->fs_blockdev_count), ctx->fs_blockdev_count);
208 log_out(ctx, P_("%12u fifo\n", "%12u fifos\n", ctx->fs_fifo_count),
209 ctx->fs_fifo_count);
210 log_out(ctx, P_("%12u link\n", "%12u links\n", num_links),
211 ctx->fs_links_count - dir_links);
212 log_out(ctx, P_("%12u symbolic link", "%12u symbolic links",
213 ctx->fs_symlinks_count), ctx->fs_symlinks_count);
214 log_out(ctx, P_(" (%u fast symbolic link)\n",
215 " (%u fast symbolic links)\n",
216 ctx->fs_fast_symlinks_count),
217 ctx->fs_fast_symlinks_count);
218 log_out(ctx, P_("%12u socket\n", "%12u sockets\n",
219 ctx->fs_sockets_count),
220 ctx->fs_sockets_count);
221 log_out(ctx, "------------\n");
222 log_out(ctx, P_("%12u file\n", "%12u files\n", num_files),
223 num_files);
224 }
225
check_mount(e2fsck_t ctx)226 static void check_mount(e2fsck_t ctx)
227 {
228 errcode_t retval;
229 int cont;
230
231 retval = ext2fs_check_if_mounted(ctx->filesystem_name,
232 &ctx->mount_flags);
233 if (retval) {
234 com_err("ext2fs_check_if_mount", retval,
235 _("while determining whether %s is mounted."),
236 ctx->filesystem_name);
237 return;
238 }
239
240 /*
241 * If the filesystem isn't mounted, or it's the root
242 * filesystem and it's mounted read-only, and we're not doing
243 * a read/write check, then everything's fine.
244 */
245 if ((!(ctx->mount_flags & (EXT2_MF_MOUNTED | EXT2_MF_BUSY))) ||
246 ((ctx->mount_flags & EXT2_MF_ISROOT) &&
247 (ctx->mount_flags & EXT2_MF_READONLY) &&
248 !(ctx->options & E2F_OPT_WRITECHECK)))
249 return;
250
251 if (((ctx->options & E2F_OPT_READONLY) ||
252 ((ctx->options & E2F_OPT_FORCE) &&
253 (ctx->mount_flags & EXT2_MF_READONLY))) &&
254 !(ctx->options & E2F_OPT_WRITECHECK)) {
255 log_out(ctx, _("Warning! %s is %s.\n"),
256 ctx->filesystem_name,
257 ctx->mount_flags & EXT2_MF_MOUNTED ?
258 "mounted" : "in use");
259 return;
260 }
261
262 log_out(ctx, _("%s is %s.\n"), ctx->filesystem_name,
263 ctx->mount_flags & EXT2_MF_MOUNTED ? "mounted" : "in use");
264 if (!ctx->interactive || ctx->mount_flags & EXT2_MF_BUSY)
265 fatal_error(ctx, _("Cannot continue, aborting.\n\n"));
266 puts("\007\007\007\007");
267 log_out(ctx, "%s", _("\n\nWARNING!!! "
268 "The filesystem is mounted. "
269 "If you continue you ***WILL***\n"
270 "cause ***SEVERE*** filesystem damage.\n\n"));
271 puts("\007\007\007");
272 cont = ask_yn(ctx, _("Do you really want to continue"), 0);
273 if (!cont) {
274 printf("%s", _("check aborted.\n"));
275 exit (0);
276 }
277 return;
278 }
279
is_on_batt(void)280 static int is_on_batt(void)
281 {
282 FILE *f;
283 DIR *d;
284 char tmp[80], tmp2[80], fname[80];
285 unsigned int acflag;
286 struct dirent* de;
287
288 f = fopen("/sys/class/power_supply/AC/online", "r");
289 if (f) {
290 if (fscanf(f, "%u\n", &acflag) == 1) {
291 fclose(f);
292 return (!acflag);
293 }
294 fclose(f);
295 }
296 f = fopen("/proc/apm", "r");
297 if (f) {
298 if (fscanf(f, "%s %s %s %x", tmp, tmp, tmp, &acflag) != 4)
299 acflag = 1;
300 fclose(f);
301 return (acflag != 1);
302 }
303 d = opendir("/proc/acpi/ac_adapter");
304 if (d) {
305 while ((de=readdir(d)) != NULL) {
306 if (!strncmp(".", de->d_name, 1))
307 continue;
308 snprintf(fname, 80, "/proc/acpi/ac_adapter/%s/state",
309 de->d_name);
310 f = fopen(fname, "r");
311 if (!f)
312 continue;
313 if (fscanf(f, "%s %s", tmp2, tmp) != 2)
314 tmp[0] = 0;
315 fclose(f);
316 if (strncmp(tmp, "off-line", 8) == 0) {
317 closedir(d);
318 return 1;
319 }
320 }
321 closedir(d);
322 }
323 return 0;
324 }
325
326 /*
327 * This routine checks to see if a filesystem can be skipped; if so,
328 * it will exit with E2FSCK_OK. Under some conditions it will print a
329 * message explaining why a check is being forced.
330 */
check_if_skip(e2fsck_t ctx)331 static void check_if_skip(e2fsck_t ctx)
332 {
333 ext2_filsys fs = ctx->fs;
334 struct problem_context pctx;
335 const char *reason = NULL;
336 unsigned int reason_arg = 0;
337 long next_check;
338 int batt = is_on_batt();
339 int defer_check_on_battery;
340 int broken_system_clock;
341 time_t lastcheck;
342
343 profile_get_boolean(ctx->profile, "options", "broken_system_clock",
344 0, 0, &broken_system_clock);
345 if (ctx->flags & E2F_FLAG_TIME_INSANE)
346 broken_system_clock = 1;
347 profile_get_boolean(ctx->profile, "options",
348 "defer_check_on_battery", 0, 1,
349 &defer_check_on_battery);
350 if (!defer_check_on_battery)
351 batt = 0;
352
353 if ((ctx->options & E2F_OPT_FORCE) || bad_blocks_file || cflag)
354 return;
355
356 if (ctx->options & E2F_OPT_JOURNAL_ONLY)
357 goto skip;
358
359 lastcheck = fs->super->s_lastcheck;
360 if (lastcheck > ctx->now)
361 lastcheck -= ctx->time_fudge;
362 if ((fs->super->s_state & EXT2_ERROR_FS) ||
363 !ext2fs_test_valid(fs))
364 reason = _(" contains a file system with errors");
365 else if ((fs->super->s_state & EXT2_VALID_FS) == 0)
366 reason = _(" was not cleanly unmounted");
367 else if (check_backup_super_block(ctx))
368 reason = _(" primary superblock features different from backup");
369 else if ((fs->super->s_max_mnt_count > 0) &&
370 (fs->super->s_mnt_count >=
371 (unsigned) fs->super->s_max_mnt_count)) {
372 reason = _(" has been mounted %u times without being checked");
373 reason_arg = fs->super->s_mnt_count;
374 if (batt && (fs->super->s_mnt_count <
375 (unsigned) fs->super->s_max_mnt_count*2))
376 reason = 0;
377 } else if (!broken_system_clock && fs->super->s_checkinterval &&
378 (ctx->now < lastcheck)) {
379 reason = _(" has filesystem last checked time in the future");
380 if (batt)
381 reason = 0;
382 } else if (!broken_system_clock && fs->super->s_checkinterval &&
383 ((ctx->now - lastcheck) >=
384 ((time_t) fs->super->s_checkinterval))) {
385 reason = _(" has gone %u days without being checked");
386 reason_arg = (ctx->now - fs->super->s_lastcheck)/(3600*24);
387 if (batt && ((ctx->now - fs->super->s_lastcheck) <
388 fs->super->s_checkinterval*2))
389 reason = 0;
390 }
391 if (reason) {
392 log_out(ctx, "%s", ctx->device_name);
393 log_out(ctx, reason, reason_arg);
394 log_out(ctx, "%s", _(", check forced.\n"));
395 return;
396 }
397
398 /*
399 * Update the global counts from the block group counts. This
400 * is needed since modern kernels don't update the global
401 * counts so as to avoid locking the entire file system. So
402 * if the filesystem is not unmounted cleanly, the global
403 * counts may not be accurate. Update them here if we can,
404 * for the benefit of users who might examine the file system
405 * using dumpe2fs. (This is for cosmetic reasons only.)
406 */
407 clear_problem_context(&pctx);
408 pctx.ino = fs->super->s_free_inodes_count;
409 pctx.ino2 = ctx->free_inodes;
410 if ((pctx.ino != pctx.ino2) &&
411 !(ctx->options & E2F_OPT_READONLY) &&
412 fix_problem(ctx, PR_0_FREE_INODE_COUNT, &pctx)) {
413 fs->super->s_free_inodes_count = ctx->free_inodes;
414 ext2fs_mark_super_dirty(fs);
415 }
416 clear_problem_context(&pctx);
417 pctx.blk = ext2fs_free_blocks_count(fs->super);
418 pctx.blk2 = ctx->free_blocks;
419 if ((pctx.blk != pctx.blk2) &&
420 !(ctx->options & E2F_OPT_READONLY) &&
421 fix_problem(ctx, PR_0_FREE_BLOCK_COUNT, &pctx)) {
422 ext2fs_free_blocks_count_set(fs->super, ctx->free_blocks);
423 ext2fs_mark_super_dirty(fs);
424 }
425
426 /* Print the summary message when we're skipping a full check */
427 log_out(ctx, _("%s: clean, %u/%u files, %llu/%llu blocks"),
428 ctx->device_name,
429 fs->super->s_inodes_count - fs->super->s_free_inodes_count,
430 fs->super->s_inodes_count,
431 ext2fs_blocks_count(fs->super) -
432 ext2fs_free_blocks_count(fs->super),
433 ext2fs_blocks_count(fs->super));
434 next_check = 100000;
435 if (fs->super->s_max_mnt_count > 0) {
436 next_check = fs->super->s_max_mnt_count - fs->super->s_mnt_count;
437 if (next_check <= 0)
438 next_check = 1;
439 }
440 if (!broken_system_clock && fs->super->s_checkinterval &&
441 ((ctx->now - fs->super->s_lastcheck) >= fs->super->s_checkinterval))
442 next_check = 1;
443 if (next_check <= 5) {
444 if (next_check == 1) {
445 if (batt)
446 log_out(ctx, "%s",
447 _(" (check deferred; on battery)"));
448 else
449 log_out(ctx, "%s",
450 _(" (check after next mount)"));
451 } else
452 log_out(ctx, _(" (check in %ld mounts)"),
453 next_check);
454 }
455 log_out(ctx, "\n");
456 skip:
457 ext2fs_close(fs);
458 ctx->fs = NULL;
459 e2fsck_free_context(ctx);
460 exit(FSCK_OK);
461 }
462
463 /*
464 * For completion notice
465 */
466 struct percent_tbl {
467 int max_pass;
468 int table[32];
469 };
470 static struct percent_tbl e2fsck_tbl = {
471 5, { 0, 70, 90, 92, 95, 100 }
472 };
473 static char bar[128], spaces[128];
474
calc_percent(struct percent_tbl * tbl,int pass,int curr,int max)475 static float calc_percent(struct percent_tbl *tbl, int pass, int curr,
476 int max)
477 {
478 float percent;
479
480 if (pass <= 0)
481 return 0.0;
482 if (pass > tbl->max_pass || max == 0)
483 return 100.0;
484 percent = ((float) curr) / ((float) max);
485 return ((percent * (tbl->table[pass] - tbl->table[pass-1]))
486 + tbl->table[pass-1]);
487 }
488
e2fsck_clear_progbar(e2fsck_t ctx)489 void e2fsck_clear_progbar(e2fsck_t ctx)
490 {
491 if (!(ctx->flags & E2F_FLAG_PROG_BAR))
492 return;
493
494 printf("%s%s\r%s", ctx->start_meta, spaces + (sizeof(spaces) - 80),
495 ctx->stop_meta);
496 fflush(stdout);
497 ctx->flags &= ~E2F_FLAG_PROG_BAR;
498 }
499
e2fsck_simple_progress(e2fsck_t ctx,const char * label,float percent,unsigned int dpynum)500 int e2fsck_simple_progress(e2fsck_t ctx, const char *label, float percent,
501 unsigned int dpynum)
502 {
503 static const char spinner[] = "\\|/-";
504 int i;
505 unsigned int tick;
506 struct timeval tv;
507 int dpywidth;
508 int fixed_percent;
509
510 if (ctx->flags & E2F_FLAG_PROG_SUPPRESS)
511 return 0;
512
513 /*
514 * Calculate the new progress position. If the
515 * percentage hasn't changed, then we skip out right
516 * away.
517 */
518 fixed_percent = (int) ((10 * percent) + 0.5);
519 if (ctx->progress_last_percent == fixed_percent)
520 return 0;
521 ctx->progress_last_percent = fixed_percent;
522
523 /*
524 * If we've already updated the spinner once within
525 * the last 1/8th of a second, no point doing it
526 * again.
527 */
528 gettimeofday(&tv, NULL);
529 tick = (tv.tv_sec << 3) + (tv.tv_usec / (1000000 / 8));
530 if ((tick == ctx->progress_last_time) &&
531 (fixed_percent != 0) && (fixed_percent != 1000))
532 return 0;
533 ctx->progress_last_time = tick;
534
535 /*
536 * Advance the spinner, and note that the progress bar
537 * will be on the screen
538 */
539 ctx->progress_pos = (ctx->progress_pos+1) & 3;
540 ctx->flags |= E2F_FLAG_PROG_BAR;
541
542 dpywidth = 66 - strlen(label);
543 dpywidth = 8 * (dpywidth / 8);
544 if (dpynum)
545 dpywidth -= 8;
546
547 i = ((percent * dpywidth) + 50) / 100;
548 printf("%s%s: |%s%s", ctx->start_meta, label,
549 bar + (sizeof(bar) - (i+1)),
550 spaces + (sizeof(spaces) - (dpywidth - i + 1)));
551 if (fixed_percent == 1000)
552 fputc('|', stdout);
553 else
554 fputc(spinner[ctx->progress_pos & 3], stdout);
555 printf(" %4.1f%% ", percent);
556 if (dpynum)
557 printf("%u\r", dpynum);
558 else
559 fputs(" \r", stdout);
560 fputs(ctx->stop_meta, stdout);
561
562 if (fixed_percent == 1000)
563 e2fsck_clear_progbar(ctx);
564 fflush(stdout);
565
566 return 0;
567 }
568
e2fsck_update_progress(e2fsck_t ctx,int pass,unsigned long cur,unsigned long max)569 static int e2fsck_update_progress(e2fsck_t ctx, int pass,
570 unsigned long cur, unsigned long max)
571 {
572 char buf[1024];
573 float percent;
574
575 if (pass == 0)
576 return 0;
577
578 if (ctx->progress_fd) {
579 snprintf(buf, sizeof(buf), "%d %lu %lu %s\n",
580 pass, cur, max, ctx->device_name);
581 write_all(ctx->progress_fd, buf, strlen(buf));
582 } else {
583 percent = calc_percent(&e2fsck_tbl, pass, cur, max);
584 e2fsck_simple_progress(ctx, ctx->device_name,
585 percent, 0);
586 }
587 return 0;
588 }
589
590 #define PATH_SET "PATH=/sbin"
591
592 /*
593 * Make sure 0,1,2 file descriptors are open, so that we don't open
594 * the filesystem using the same file descriptor as stdout or stderr.
595 */
reserve_stdio_fds(void)596 static void reserve_stdio_fds(void)
597 {
598 int fd = 0;
599
600 while (fd <= 2) {
601 fd = open("/dev/null", O_RDWR);
602 if (fd < 0) {
603 fprintf(stderr, _("ERROR: Couldn't open "
604 "/dev/null (%s)\n"),
605 strerror(errno));
606 break;
607 }
608 }
609 }
610
611 #ifdef HAVE_SIGNAL_H
signal_progress_on(int sig EXT2FS_ATTR ((unused)))612 static void signal_progress_on(int sig EXT2FS_ATTR((unused)))
613 {
614 e2fsck_t ctx = e2fsck_global_ctx;
615
616 if (!ctx)
617 return;
618
619 ctx->progress = e2fsck_update_progress;
620 }
621
signal_progress_off(int sig EXT2FS_ATTR ((unused)))622 static void signal_progress_off(int sig EXT2FS_ATTR((unused)))
623 {
624 e2fsck_t ctx = e2fsck_global_ctx;
625
626 if (!ctx)
627 return;
628
629 e2fsck_clear_progbar(ctx);
630 ctx->progress = 0;
631 }
632
signal_cancel(int sig EXT2FS_ATTR ((unused)))633 static void signal_cancel(int sig EXT2FS_ATTR((unused)))
634 {
635 e2fsck_t ctx = e2fsck_global_ctx;
636
637 if (!ctx)
638 exit(FSCK_CANCELED);
639
640 ctx->flags |= E2F_FLAG_CANCEL;
641 }
642 #endif
643
parse_extended_opts(e2fsck_t ctx,const char * opts)644 static void parse_extended_opts(e2fsck_t ctx, const char *opts)
645 {
646 char *buf, *token, *next, *p, *arg;
647 int ea_ver;
648 int extended_usage = 0;
649
650 buf = string_copy(ctx, opts, 0);
651 for (token = buf; token && *token; token = next) {
652 p = strchr(token, ',');
653 next = 0;
654 if (p) {
655 *p = 0;
656 next = p+1;
657 }
658 arg = strchr(token, '=');
659 if (arg) {
660 *arg = 0;
661 arg++;
662 }
663 if (strcmp(token, "ea_ver") == 0) {
664 if (!arg) {
665 extended_usage++;
666 continue;
667 }
668 ea_ver = strtoul(arg, &p, 0);
669 if (*p ||
670 ((ea_ver != 1) && (ea_ver != 2))) {
671 fprintf(stderr, "%s",
672 _("Invalid EA version.\n"));
673 extended_usage++;
674 continue;
675 }
676 ctx->ext_attr_ver = ea_ver;
677 } else if (strcmp(token, "fragcheck") == 0) {
678 ctx->options |= E2F_OPT_FRAGCHECK;
679 continue;
680 } else if (strcmp(token, "journal_only") == 0) {
681 if (arg) {
682 extended_usage++;
683 continue;
684 }
685 ctx->options |= E2F_OPT_JOURNAL_ONLY;
686 } else if (strcmp(token, "discard") == 0) {
687 ctx->options |= E2F_OPT_DISCARD;
688 continue;
689 } else if (strcmp(token, "nodiscard") == 0) {
690 ctx->options &= ~E2F_OPT_DISCARD;
691 continue;
692 } else if (strcmp(token, "log_filename") == 0) {
693 if (!arg)
694 extended_usage++;
695 else
696 ctx->log_fn = string_copy(ctx, arg, 0);
697 continue;
698 } else {
699 fprintf(stderr, _("Unknown extended option: %s\n"),
700 token);
701 extended_usage++;
702 }
703 }
704 free(buf);
705
706 if (extended_usage) {
707 fputs(("\nExtended options are separated by commas, "
708 "and may take an argument which\n"
709 "is set off by an equals ('=') sign. "
710 "Valid extended options are:\n"), stderr);
711 fputs(("\tea_ver=<ea_version (1 or 2)>\n"), stderr);
712 fputs(("\tfragcheck\n"), stderr);
713 fputs(("\tjournal_only\n"), stderr);
714 fputs(("\tdiscard\n"), stderr);
715 fputs(("\tnodiscard\n"), stderr);
716 fputc('\n', stderr);
717 exit(1);
718 }
719 }
720
syntax_err_report(const char * filename,long err,int line_num)721 static void syntax_err_report(const char *filename, long err, int line_num)
722 {
723 fprintf(stderr,
724 _("Syntax error in e2fsck config file (%s, line #%d)\n\t%s\n"),
725 filename, line_num, error_message(err));
726 exit(FSCK_ERROR);
727 }
728
729 static const char *config_fn[] = { ROOT_SYSCONFDIR "/e2fsck.conf", 0 };
730
PRS(int argc,char * argv[],e2fsck_t * ret_ctx)731 static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx)
732 {
733 int flush = 0;
734 int c, fd;
735 #ifdef MTRACE
736 extern void *mallwatch;
737 #endif
738 e2fsck_t ctx;
739 errcode_t retval;
740 #ifdef HAVE_SIGNAL_H
741 struct sigaction sa;
742 #endif
743 char *extended_opts = 0;
744 char *cp;
745 int res; /* result of sscanf */
746 #ifdef CONFIG_JBD_DEBUG
747 char *jbd_debug;
748 #endif
749
750 retval = e2fsck_allocate_context(&ctx);
751 if (retval)
752 return retval;
753
754 *ret_ctx = ctx;
755
756 setvbuf(stdout, NULL, _IONBF, BUFSIZ);
757 setvbuf(stderr, NULL, _IONBF, BUFSIZ);
758 if (isatty(0) && isatty(1)) {
759 ctx->interactive = 1;
760 } else {
761 ctx->start_meta[0] = '\001';
762 ctx->stop_meta[0] = '\002';
763 }
764 memset(bar, '=', sizeof(bar)-1);
765 memset(spaces, ' ', sizeof(spaces)-1);
766 add_error_table(&et_ext2_error_table);
767 add_error_table(&et_prof_error_table);
768 blkid_get_cache(&ctx->blkid, NULL);
769
770 if (argc && *argv)
771 ctx->program_name = *argv;
772 else
773 ctx->program_name = "e2fsck";
774
775 while ((c = getopt (argc, argv, "panyrcC:B:dE:fvtFVM:b:I:j:P:l:L:N:SsDk")) != EOF)
776 switch (c) {
777 case 'C':
778 ctx->progress = e2fsck_update_progress;
779 res = sscanf(optarg, "%d", &ctx->progress_fd);
780 if (res != 1)
781 goto sscanf_err;
782
783 if (ctx->progress_fd < 0) {
784 ctx->progress = 0;
785 ctx->progress_fd = ctx->progress_fd * -1;
786 }
787 if (!ctx->progress_fd)
788 break;
789 /* Validate the file descriptor to avoid disasters */
790 fd = dup(ctx->progress_fd);
791 if (fd < 0) {
792 fprintf(stderr,
793 _("Error validating file descriptor %d: %s\n"),
794 ctx->progress_fd,
795 error_message(errno));
796 fatal_error(ctx,
797 _("Invalid completion information file descriptor"));
798 } else
799 close(fd);
800 break;
801 case 'D':
802 ctx->options |= E2F_OPT_COMPRESS_DIRS;
803 break;
804 case 'E':
805 extended_opts = optarg;
806 break;
807 case 'p':
808 case 'a':
809 if (ctx->options & (E2F_OPT_YES|E2F_OPT_NO)) {
810 conflict_opt:
811 fatal_error(ctx,
812 _("Only one of the options -p/-a, -n or -y may be specified."));
813 }
814 ctx->options |= E2F_OPT_PREEN;
815 break;
816 case 'n':
817 if (ctx->options & (E2F_OPT_YES|E2F_OPT_PREEN))
818 goto conflict_opt;
819 ctx->options |= E2F_OPT_NO;
820 break;
821 case 'y':
822 if (ctx->options & (E2F_OPT_PREEN|E2F_OPT_NO))
823 goto conflict_opt;
824 ctx->options |= E2F_OPT_YES;
825 break;
826 case 't':
827 #ifdef RESOURCE_TRACK
828 if (ctx->options & E2F_OPT_TIME)
829 ctx->options |= E2F_OPT_TIME2;
830 else
831 ctx->options |= E2F_OPT_TIME;
832 #else
833 fprintf(stderr, _("The -t option is not "
834 "supported on this version of e2fsck.\n"));
835 #endif
836 break;
837 case 'c':
838 if (cflag++)
839 ctx->options |= E2F_OPT_WRITECHECK;
840 ctx->options |= E2F_OPT_CHECKBLOCKS;
841 break;
842 case 'r':
843 /* What we do by default, anyway! */
844 break;
845 case 'b':
846 res = sscanf(optarg, "%llu", &ctx->use_superblock);
847 if (res != 1)
848 goto sscanf_err;
849 ctx->flags |= E2F_FLAG_SB_SPECIFIED;
850 break;
851 case 'B':
852 ctx->blocksize = atoi(optarg);
853 break;
854 case 'I':
855 res = sscanf(optarg, "%d", &ctx->inode_buffer_blocks);
856 if (res != 1)
857 goto sscanf_err;
858 break;
859 case 'j':
860 ctx->journal_name = blkid_get_devname(ctx->blkid,
861 optarg, NULL);
862 if (!ctx->journal_name) {
863 com_err(ctx->program_name, 0,
864 _("Unable to resolve '%s'"),
865 optarg);
866 fatal_error(ctx, 0);
867 }
868 break;
869 case 'P':
870 res = sscanf(optarg, "%d", &ctx->process_inode_size);
871 if (res != 1)
872 goto sscanf_err;
873 break;
874 case 'L':
875 replace_bad_blocks++;
876 case 'l':
877 if (bad_blocks_file)
878 free(bad_blocks_file);
879 bad_blocks_file = string_copy(ctx, optarg, 0);
880 break;
881 case 'd':
882 ctx->options |= E2F_OPT_DEBUG;
883 break;
884 case 'f':
885 ctx->options |= E2F_OPT_FORCE;
886 break;
887 case 'F':
888 flush = 1;
889 break;
890 case 'v':
891 verbose = 1;
892 break;
893 case 'V':
894 show_version_only = 1;
895 break;
896 #ifdef MTRACE
897 case 'M':
898 mallwatch = (void *) strtol(optarg, NULL, 0);
899 break;
900 #endif
901 case 'N':
902 ctx->device_name = string_copy(ctx, optarg, 0);
903 break;
904 case 'k':
905 keep_bad_blocks++;
906 break;
907 default:
908 usage(ctx);
909 }
910 if (show_version_only)
911 return 0;
912 if (optind != argc - 1)
913 usage(ctx);
914 if ((ctx->options & E2F_OPT_NO) &&
915 (ctx->options & E2F_OPT_COMPRESS_DIRS)) {
916 com_err(ctx->program_name, 0, "%s",
917 _("The -n and -D options are incompatible."));
918 fatal_error(ctx, 0);
919 }
920 if ((ctx->options & E2F_OPT_NO) && cflag) {
921 com_err(ctx->program_name, 0, "%s",
922 _("The -n and -c options are incompatible."));
923 fatal_error(ctx, 0);
924 }
925 if ((ctx->options & E2F_OPT_NO) && bad_blocks_file) {
926 com_err(ctx->program_name, 0, "%s",
927 _("The -n and -l/-L options are incompatible."));
928 fatal_error(ctx, 0);
929 }
930 if (ctx->options & E2F_OPT_NO)
931 ctx->options |= E2F_OPT_READONLY;
932
933 ctx->io_options = strchr(argv[optind], '?');
934 if (ctx->io_options)
935 *ctx->io_options++ = 0;
936 ctx->filesystem_name = blkid_get_devname(ctx->blkid, argv[optind], 0);
937 if (!ctx->filesystem_name) {
938 com_err(ctx->program_name, 0, _("Unable to resolve '%s'"),
939 argv[optind]);
940 fatal_error(ctx, 0);
941 }
942 if (extended_opts)
943 parse_extended_opts(ctx, extended_opts);
944
945 if ((cp = getenv("E2FSCK_CONFIG")) != NULL)
946 config_fn[0] = cp;
947 profile_set_syntax_err_cb(syntax_err_report);
948 profile_init(config_fn, &ctx->profile);
949
950 profile_get_boolean(ctx->profile, "options", "report_time", 0, 0,
951 &c);
952 if (c)
953 ctx->options |= E2F_OPT_TIME | E2F_OPT_TIME2;
954 profile_get_boolean(ctx->profile, "options", "report_verbose", 0, 0,
955 &c);
956 if (c)
957 verbose = 1;
958
959 /* Turn off discard in read-only mode */
960 if ((ctx->options & E2F_OPT_NO) &&
961 (ctx->options & E2F_OPT_DISCARD))
962 ctx->options &= ~E2F_OPT_DISCARD;
963
964 if (flush) {
965 fd = open(ctx->filesystem_name, O_RDONLY, 0);
966 if (fd < 0) {
967 com_err("open", errno,
968 _("while opening %s for flushing"),
969 ctx->filesystem_name);
970 fatal_error(ctx, 0);
971 }
972 if ((retval = ext2fs_sync_device(fd, 1))) {
973 com_err("ext2fs_sync_device", retval,
974 _("while trying to flush %s"),
975 ctx->filesystem_name);
976 fatal_error(ctx, 0);
977 }
978 close(fd);
979 }
980 if (cflag && bad_blocks_file) {
981 fprintf(stderr, "%s", _("The -c and the -l/-L options may not "
982 "be both used at the same time.\n"));
983 exit(FSCK_USAGE);
984 }
985 #ifdef HAVE_SIGNAL_H
986 /*
987 * Set up signal action
988 */
989 memset(&sa, 0, sizeof(struct sigaction));
990 sa.sa_handler = signal_cancel;
991 sigaction(SIGINT, &sa, 0);
992 sigaction(SIGTERM, &sa, 0);
993 #ifdef SA_RESTART
994 sa.sa_flags = SA_RESTART;
995 #endif
996 e2fsck_global_ctx = ctx;
997 sa.sa_handler = signal_progress_on;
998 sigaction(SIGUSR1, &sa, 0);
999 sa.sa_handler = signal_progress_off;
1000 sigaction(SIGUSR2, &sa, 0);
1001 #endif
1002
1003 /* Update our PATH to include /sbin if we need to run badblocks */
1004 if (cflag) {
1005 char *oldpath = getenv("PATH");
1006 char *newpath;
1007 int len = sizeof(PATH_SET) + 1;
1008
1009 if (oldpath)
1010 len += strlen(oldpath);
1011
1012 newpath = malloc(len);
1013 if (!newpath)
1014 fatal_error(ctx, "Couldn't malloc() newpath");
1015 strcpy(newpath, PATH_SET);
1016
1017 if (oldpath) {
1018 strcat(newpath, ":");
1019 strcat(newpath, oldpath);
1020 }
1021 putenv(newpath);
1022 }
1023 #ifdef CONFIG_JBD_DEBUG
1024 jbd_debug = getenv("E2FSCK_JBD_DEBUG");
1025 if (jbd_debug) {
1026 res = sscanf(jbd_debug, "%d", &journal_enable_debug);
1027 if (res != 1) {
1028 fprintf(stderr,
1029 _("E2FSCK_JBD_DEBUG \"%s\" not an integer\n\n"),
1030 jbd_debug);
1031 exit (1);
1032 }
1033 }
1034 #endif
1035 return 0;
1036
1037 sscanf_err:
1038 fprintf(stderr, _("\nInvalid non-numeric argument to -%c (\"%s\")\n\n"),
1039 c, optarg);
1040 exit (1);
1041 }
1042
try_open_fs(e2fsck_t ctx,int flags,io_manager io_ptr,ext2_filsys * ret_fs)1043 static errcode_t try_open_fs(e2fsck_t ctx, int flags, io_manager io_ptr,
1044 ext2_filsys *ret_fs)
1045 {
1046 errcode_t retval;
1047
1048 *ret_fs = NULL;
1049 if (ctx->superblock && ctx->blocksize) {
1050 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1051 flags, ctx->superblock, ctx->blocksize,
1052 io_ptr, ret_fs);
1053 } else if (ctx->superblock) {
1054 int blocksize;
1055 for (blocksize = EXT2_MIN_BLOCK_SIZE;
1056 blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) {
1057 if (*ret_fs) {
1058 ext2fs_free(*ret_fs);
1059 *ret_fs = NULL;
1060 }
1061 retval = ext2fs_open2(ctx->filesystem_name,
1062 ctx->io_options, flags,
1063 ctx->superblock, blocksize,
1064 io_ptr, ret_fs);
1065 if (!retval)
1066 break;
1067 }
1068 } else
1069 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1070 flags, 0, 0, io_ptr, ret_fs);
1071
1072 if (retval == 0)
1073 e2fsck_set_bitmap_type(*ret_fs, EXT2FS_BMAP64_RBTREE,
1074 "default", NULL);
1075 return retval;
1076 }
1077
1078 static const char *my_ver_string = E2FSPROGS_VERSION;
1079 static const char *my_ver_date = E2FSPROGS_DATE;
1080
e2fsck_check_mmp(ext2_filsys fs,e2fsck_t ctx)1081 static errcode_t e2fsck_check_mmp(ext2_filsys fs, e2fsck_t ctx)
1082 {
1083 struct mmp_struct *mmp_s;
1084 unsigned int mmp_check_interval;
1085 errcode_t retval = 0;
1086 struct problem_context pctx;
1087 unsigned int wait_time = 0;
1088
1089 clear_problem_context(&pctx);
1090 if (fs->mmp_buf == NULL) {
1091 retval = ext2fs_get_mem(fs->blocksize, &fs->mmp_buf);
1092 if (retval)
1093 goto check_error;
1094 }
1095
1096 retval = ext2fs_mmp_read(fs, fs->super->s_mmp_block, fs->mmp_buf);
1097 if (retval)
1098 goto check_error;
1099
1100 mmp_s = fs->mmp_buf;
1101
1102 mmp_check_interval = fs->super->s_mmp_update_interval;
1103 if (mmp_check_interval < EXT4_MMP_MIN_CHECK_INTERVAL)
1104 mmp_check_interval = EXT4_MMP_MIN_CHECK_INTERVAL;
1105
1106 /*
1107 * If check_interval in MMP block is larger, use that instead of
1108 * check_interval from the superblock.
1109 */
1110 if (mmp_s->mmp_check_interval > mmp_check_interval)
1111 mmp_check_interval = mmp_s->mmp_check_interval;
1112
1113 wait_time = mmp_check_interval * 2 + 1;
1114
1115 if (mmp_s->mmp_seq == EXT4_MMP_SEQ_CLEAN)
1116 retval = 0;
1117 else if (mmp_s->mmp_seq == EXT4_MMP_SEQ_FSCK)
1118 retval = EXT2_ET_MMP_FSCK_ON;
1119 else if (mmp_s->mmp_seq > EXT4_MMP_SEQ_MAX)
1120 retval = EXT2_ET_MMP_UNKNOWN_SEQ;
1121
1122 if (retval)
1123 goto check_error;
1124
1125 /* Print warning if e2fck will wait for more than 20 secs. */
1126 if (verbose || wait_time > EXT4_MMP_MIN_CHECK_INTERVAL * 4) {
1127 log_out(ctx, _("MMP interval is %u seconds and total wait "
1128 "time is %u seconds. Please wait...\n"),
1129 mmp_check_interval, wait_time * 2);
1130 }
1131
1132 return 0;
1133
1134 check_error:
1135
1136 if (retval == EXT2_ET_MMP_BAD_BLOCK) {
1137 if (fix_problem(ctx, PR_0_MMP_INVALID_BLK, &pctx)) {
1138 fs->super->s_mmp_block = 0;
1139 ext2fs_mark_super_dirty(fs);
1140 retval = 0;
1141 }
1142 } else if (retval == EXT2_ET_MMP_FAILED) {
1143 com_err(ctx->program_name, retval, "%s",
1144 _("while checking MMP block"));
1145 dump_mmp_msg(fs->mmp_buf, NULL);
1146 } else if (retval == EXT2_ET_MMP_FSCK_ON ||
1147 retval == EXT2_ET_MMP_UNKNOWN_SEQ) {
1148 com_err(ctx->program_name, retval, "%s",
1149 _("while checking MMP block"));
1150 dump_mmp_msg(fs->mmp_buf,
1151 _("If you are sure the filesystem is not "
1152 "in use on any node, run:\n"
1153 "'tune2fs -f -E clear_mmp {device}'\n"));
1154 } else if (retval == EXT2_ET_MMP_MAGIC_INVALID) {
1155 if (fix_problem(ctx, PR_0_MMP_INVALID_MAGIC, &pctx)) {
1156 ext2fs_mmp_clear(fs);
1157 retval = 0;
1158 }
1159 }
1160 return retval;
1161 }
1162
main(int argc,char * argv[])1163 int main (int argc, char *argv[])
1164 {
1165 errcode_t retval = 0, retval2 = 0, orig_retval = 0;
1166 int exit_value = FSCK_OK;
1167 ext2_filsys fs = 0;
1168 io_manager io_ptr;
1169 struct ext2_super_block *sb;
1170 const char *lib_ver_date;
1171 int my_ver, lib_ver;
1172 e2fsck_t ctx;
1173 blk64_t orig_superblock;
1174 struct problem_context pctx;
1175 int flags, run_result;
1176 int journal_size;
1177 int sysval, sys_page_size = 4096;
1178 int old_bitmaps;
1179 __u32 features[3];
1180 char *cp;
1181 int qtype = -99; /* quota type */
1182
1183 clear_problem_context(&pctx);
1184 sigcatcher_setup();
1185 #ifdef MTRACE
1186 mtrace();
1187 #endif
1188 #ifdef MCHECK
1189 mcheck(0);
1190 #endif
1191 #ifdef ENABLE_NLS
1192 setlocale(LC_MESSAGES, "");
1193 setlocale(LC_CTYPE, "");
1194 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1195 textdomain(NLS_CAT_NAME);
1196 set_com_err_gettext(gettext);
1197 #endif
1198 my_ver = ext2fs_parse_version_string(my_ver_string);
1199 lib_ver = ext2fs_get_library_version(0, &lib_ver_date);
1200 if (my_ver > lib_ver) {
1201 fprintf( stderr, "%s",
1202 _("Error: ext2fs library version out of date!\n"));
1203 show_version_only++;
1204 }
1205
1206 retval = PRS(argc, argv, &ctx);
1207 if (retval) {
1208 com_err("e2fsck", retval, "%s",
1209 _("while trying to initialize program"));
1210 exit(FSCK_ERROR);
1211 }
1212 reserve_stdio_fds();
1213
1214 set_up_logging(ctx);
1215 if (ctx->logf) {
1216 int i;
1217 fputs("E2fsck run: ", ctx->logf);
1218 for (i = 0; i < argc; i++) {
1219 if (i)
1220 fputc(' ', ctx->logf);
1221 fputs(argv[i], ctx->logf);
1222 }
1223 fputc('\n', ctx->logf);
1224 }
1225
1226 init_resource_track(&ctx->global_rtrack, NULL);
1227 if (!(ctx->options & E2F_OPT_PREEN) || show_version_only)
1228 log_err(ctx, "e2fsck %s (%s)\n", my_ver_string,
1229 my_ver_date);
1230
1231 if (show_version_only) {
1232 log_err(ctx, _("\tUsing %s, %s\n"),
1233 error_message(EXT2_ET_BASE), lib_ver_date);
1234 exit(FSCK_OK);
1235 }
1236
1237 check_mount(ctx);
1238
1239 if (!(ctx->options & E2F_OPT_PREEN) &&
1240 !(ctx->options & E2F_OPT_NO) &&
1241 !(ctx->options & E2F_OPT_YES)) {
1242 if (!ctx->interactive)
1243 fatal_error(ctx,
1244 _("need terminal for interactive repairs"));
1245 }
1246 ctx->superblock = ctx->use_superblock;
1247
1248 flags = EXT2_FLAG_SKIP_MMP;
1249 restart:
1250 #ifdef CONFIG_TESTIO_DEBUG
1251 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1252 io_ptr = test_io_manager;
1253 test_io_backing_manager = unix_io_manager;
1254 } else
1255 #endif
1256 io_ptr = unix_io_manager;
1257 flags |= EXT2_FLAG_NOFREE_ON_ERROR;
1258 profile_get_boolean(ctx->profile, "options", "old_bitmaps", 0, 0,
1259 &old_bitmaps);
1260 if (!old_bitmaps)
1261 flags |= EXT2_FLAG_64BITS;
1262 if ((ctx->options & E2F_OPT_READONLY) == 0) {
1263 flags |= EXT2_FLAG_RW;
1264 if (!(ctx->mount_flags & EXT2_MF_ISROOT &&
1265 ctx->mount_flags & EXT2_MF_READONLY))
1266 flags |= EXT2_FLAG_EXCLUSIVE;
1267 if ((ctx->mount_flags & EXT2_MF_READONLY) &&
1268 (ctx->options & E2F_OPT_FORCE))
1269 flags &= ~EXT2_FLAG_EXCLUSIVE;
1270 }
1271
1272 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1273
1274 if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) &&
1275 !(ctx->flags & E2F_FLAG_SB_SPECIFIED) &&
1276 ((retval == EXT2_ET_BAD_MAGIC) ||
1277 (retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
1278 ((retval == 0) && (retval2 = ext2fs_check_desc(fs))))) {
1279 if (retval) {
1280 pctx.errcode = retval;
1281 fix_problem(ctx, PR_0_OPEN_FAILED, &pctx);
1282 }
1283 if (retval2) {
1284 pctx.errcode = retval2;
1285 fix_problem(ctx, PR_0_CHECK_DESC_FAILED, &pctx);
1286 }
1287 pctx.errcode = 0;
1288 if (retval2 == ENOMEM || retval2 == EXT2_ET_NO_MEMORY) {
1289 retval = retval2;
1290 goto failure;
1291 }
1292 if (fs->flags & EXT2_FLAG_NOFREE_ON_ERROR) {
1293 ext2fs_free(fs);
1294 fs = NULL;
1295 }
1296 if (!fs || (fs->group_desc_count > 1)) {
1297 log_out(ctx, _("%s: %s trying backup blocks...\n"),
1298 ctx->program_name,
1299 retval ? _("Superblock invalid,") :
1300 _("Group descriptors look bad..."));
1301 orig_superblock = ctx->superblock;
1302 get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr);
1303 if (fs)
1304 ext2fs_close(fs);
1305 orig_retval = retval;
1306 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1307 if ((orig_retval == 0) && retval != 0) {
1308 if (fs)
1309 ext2fs_close(fs);
1310 log_out(ctx, _("%s: %s while using the "
1311 "backup blocks"),
1312 ctx->program_name,
1313 error_message(retval));
1314 log_out(ctx, _("%s: going back to original "
1315 "superblock\n"),
1316 ctx->program_name);
1317 ctx->superblock = orig_superblock;
1318 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1319 }
1320 }
1321 }
1322 if (((retval == EXT2_ET_UNSUPP_FEATURE) ||
1323 (retval == EXT2_ET_RO_UNSUPP_FEATURE)) &&
1324 fs && fs->super) {
1325 sb = fs->super;
1326 features[0] = (sb->s_feature_compat &
1327 ~EXT2_LIB_FEATURE_COMPAT_SUPP);
1328 features[1] = (sb->s_feature_incompat &
1329 ~EXT2_LIB_FEATURE_INCOMPAT_SUPP);
1330 features[2] = (sb->s_feature_ro_compat &
1331 ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1332 if (features[0] || features[1] || features[2])
1333 goto print_unsupp_features;
1334 }
1335 failure:
1336 if (retval) {
1337 if (orig_retval)
1338 retval = orig_retval;
1339 com_err(ctx->program_name, retval, _("while trying to open %s"),
1340 ctx->filesystem_name);
1341 if (retval == EXT2_ET_REV_TOO_HIGH) {
1342 log_out(ctx, "%s",
1343 _("The filesystem revision is apparently "
1344 "too high for this version of e2fsck.\n"
1345 "(Or the filesystem superblock "
1346 "is corrupt)\n\n"));
1347 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1348 } else if (retval == EXT2_ET_SHORT_READ)
1349 log_out(ctx, "%s",
1350 _("Could this be a zero-length partition?\n"));
1351 else if ((retval == EPERM) || (retval == EACCES))
1352 log_out(ctx, _("You must have %s access to the "
1353 "filesystem or be root\n"),
1354 (ctx->options & E2F_OPT_READONLY) ?
1355 "r/o" : "r/w");
1356 else if (retval == ENXIO)
1357 log_out(ctx, "%s",
1358 _("Possibly non-existent or swap device?\n"));
1359 else if (retval == EBUSY)
1360 log_out(ctx, "%s", _("Filesystem mounted or opened "
1361 "exclusively by another program?\n"));
1362 else if (retval == ENOENT)
1363 log_out(ctx, "%s",
1364 _("Possibly non-existent device?\n"));
1365 #ifdef EROFS
1366 else if (retval == EROFS)
1367 log_out(ctx, "%s", _("Disk write-protected; use the "
1368 "-n option to do a read-only\n"
1369 "check of the device.\n"));
1370 #endif
1371 else
1372 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1373 fatal_error(ctx, 0);
1374 }
1375 /*
1376 * We only update the master superblock because (a) paranoia;
1377 * we don't want to corrupt the backup superblocks, and (b) we
1378 * don't need to update the mount count and last checked
1379 * fields in the backup superblock (the kernel doesn't update
1380 * the backup superblocks anyway). With newer versions of the
1381 * library this flag is set by ext2fs_open2(), but we set this
1382 * here just to be sure. (No, we don't support e2fsck running
1383 * with some other libext2fs than the one that it was shipped
1384 * with, but just in case....)
1385 */
1386 fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
1387
1388 if (!(ctx->flags & E2F_FLAG_GOT_DEVSIZE)) {
1389 __u32 blocksize = EXT2_BLOCK_SIZE(fs->super);
1390 int need_restart = 0;
1391
1392 pctx.errcode = ext2fs_get_device_size2(ctx->filesystem_name,
1393 blocksize,
1394 &ctx->num_blocks);
1395 /*
1396 * The floppy driver refuses to allow anyone else to
1397 * open the device if has been opened with O_EXCL;
1398 * this is unlike other block device drivers in Linux.
1399 * To handle this, we close the filesystem and then
1400 * reopen the filesystem after we get the device size.
1401 */
1402 if (pctx.errcode == EBUSY) {
1403 ext2fs_close(fs);
1404 need_restart++;
1405 pctx.errcode =
1406 ext2fs_get_device_size2(ctx->filesystem_name,
1407 blocksize,
1408 &ctx->num_blocks);
1409 }
1410 if (pctx.errcode == EXT2_ET_UNIMPLEMENTED)
1411 ctx->num_blocks = 0;
1412 else if (pctx.errcode) {
1413 fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx);
1414 ctx->flags |= E2F_FLAG_ABORT;
1415 fatal_error(ctx, 0);
1416 }
1417 ctx->flags |= E2F_FLAG_GOT_DEVSIZE;
1418 if (need_restart)
1419 goto restart;
1420 }
1421
1422 ctx->fs = fs;
1423 fs->priv_data = ctx;
1424 fs->now = ctx->now;
1425 sb = fs->super;
1426
1427 if (sb->s_rev_level > E2FSCK_CURRENT_REV) {
1428 com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH,
1429 _("while trying to open %s"),
1430 ctx->filesystem_name);
1431 get_newer:
1432 fatal_error(ctx, _("Get a newer version of e2fsck!"));
1433 }
1434
1435 /*
1436 * Set the device name, which is used whenever we print error
1437 * or informational messages to the user.
1438 */
1439 if (ctx->device_name == 0 &&
1440 (sb->s_volume_name[0] != 0)) {
1441 ctx->device_name = string_copy(ctx, sb->s_volume_name,
1442 sizeof(sb->s_volume_name));
1443 }
1444 if (ctx->device_name == 0)
1445 ctx->device_name = string_copy(ctx, ctx->filesystem_name, 0);
1446 for (cp = ctx->device_name; *cp; cp++)
1447 if (isspace(*cp) || *cp == ':')
1448 *cp = '_';
1449
1450 ehandler_init(fs->io);
1451
1452 if ((fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_MMP) &&
1453 (flags & EXT2_FLAG_SKIP_MMP)) {
1454 if (e2fsck_check_mmp(fs, ctx))
1455 fatal_error(ctx, 0);
1456
1457 /*
1458 * Restart in order to reopen fs but this time start mmp.
1459 */
1460 ext2fs_close(fs);
1461 ctx->fs = NULL;
1462 flags &= ~EXT2_FLAG_SKIP_MMP;
1463 goto restart;
1464 }
1465
1466 if (ctx->logf)
1467 fprintf(ctx->logf, "Filesystem UUID: %s\n",
1468 e2p_uuid2str(sb->s_uuid));
1469
1470 /*
1471 * Make sure the ext3 superblock fields are consistent.
1472 */
1473 retval = e2fsck_check_ext3_journal(ctx);
1474 if (retval) {
1475 com_err(ctx->program_name, retval,
1476 _("while checking ext3 journal for %s"),
1477 ctx->device_name);
1478 fatal_error(ctx, 0);
1479 }
1480
1481 /*
1482 * Check to see if we need to do ext3-style recovery. If so,
1483 * do it, and then restart the fsck.
1484 */
1485 if (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) {
1486 if (ctx->options & E2F_OPT_READONLY) {
1487 log_out(ctx, "%s",
1488 _("Warning: skipping journal recovery because "
1489 "doing a read-only filesystem check.\n"));
1490 io_channel_flush(ctx->fs->io);
1491 } else {
1492 if (ctx->flags & E2F_FLAG_RESTARTED) {
1493 /*
1494 * Whoops, we attempted to run the
1495 * journal twice. This should never
1496 * happen, unless the hardware or
1497 * device driver is being bogus.
1498 */
1499 com_err(ctx->program_name, 0,
1500 _("unable to set superblock flags "
1501 "on %s\n"), ctx->device_name);
1502 fatal_error(ctx, 0);
1503 }
1504 retval = e2fsck_run_ext3_journal(ctx);
1505 if (retval) {
1506 com_err(ctx->program_name, retval,
1507 _("while recovering ext3 journal of %s"),
1508 ctx->device_name);
1509 fatal_error(ctx, 0);
1510 }
1511 ext2fs_close(ctx->fs);
1512 ctx->fs = 0;
1513 ctx->flags |= E2F_FLAG_RESTARTED;
1514 goto restart;
1515 }
1516 }
1517
1518 /*
1519 * Check for compatibility with the feature sets. We need to
1520 * be more stringent than ext2fs_open().
1521 */
1522 features[0] = sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP;
1523 features[1] = sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP;
1524 features[2] = (sb->s_feature_ro_compat &
1525 ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1526 print_unsupp_features:
1527 if (features[0] || features[1] || features[2]) {
1528 int i, j;
1529 __u32 *mask = features, m;
1530
1531 log_err(ctx, _("%s has unsupported feature(s):"),
1532 ctx->filesystem_name);
1533
1534 for (i=0; i <3; i++,mask++) {
1535 for (j=0,m=1; j < 32; j++, m<<=1) {
1536 if (*mask & m)
1537 log_err(ctx, " %s",
1538 e2p_feature2string(i, m));
1539 }
1540 }
1541 log_err(ctx, "\n");
1542 goto get_newer;
1543 }
1544 #ifdef ENABLE_COMPRESSION
1545 if (sb->s_feature_incompat & EXT2_FEATURE_INCOMPAT_COMPRESSION)
1546 log_err(ctx, _("%s: warning: compression support "
1547 "is experimental.\n"),
1548 ctx->program_name);
1549 #endif
1550 #ifndef ENABLE_HTREE
1551 if (sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) {
1552 log_err(ctx, _("%s: e2fsck not compiled with HTREE support,\n\t"
1553 "but filesystem %s has HTREE directories.\n"),
1554 ctx->program_name, ctx->device_name);
1555 goto get_newer;
1556 }
1557 #endif
1558
1559 /*
1560 * If the user specified a specific superblock, presumably the
1561 * master superblock has been trashed. So we mark the
1562 * superblock as dirty, so it can be written out.
1563 */
1564 if (ctx->superblock &&
1565 !(ctx->options & E2F_OPT_READONLY))
1566 ext2fs_mark_super_dirty(fs);
1567
1568 /*
1569 * Calculate the number of filesystem blocks per pagesize. If
1570 * fs->blocksize > page_size, set the number of blocks per
1571 * pagesize to 1 to avoid division by zero errors.
1572 */
1573 #ifdef _SC_PAGESIZE
1574 sysval = sysconf(_SC_PAGESIZE);
1575 if (sysval > 0)
1576 sys_page_size = sysval;
1577 #endif /* _SC_PAGESIZE */
1578 ctx->blocks_per_page = sys_page_size / fs->blocksize;
1579 if (ctx->blocks_per_page == 0)
1580 ctx->blocks_per_page = 1;
1581
1582 if (ctx->superblock)
1583 set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0);
1584 ext2fs_mark_valid(fs);
1585 check_super_block(ctx);
1586 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1587 fatal_error(ctx, 0);
1588 check_if_skip(ctx);
1589 check_resize_inode(ctx);
1590 if (bad_blocks_file)
1591 read_bad_blocks_file(ctx, bad_blocks_file, replace_bad_blocks);
1592 else if (cflag)
1593 read_bad_blocks_file(ctx, 0, !keep_bad_blocks); /* Test disk */
1594 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1595 fatal_error(ctx, 0);
1596
1597 /*
1598 * Mark the system as valid, 'til proven otherwise
1599 */
1600 ext2fs_mark_valid(fs);
1601
1602 retval = ext2fs_read_bb_inode(fs, &fs->badblocks);
1603 if (retval) {
1604 log_out(ctx, _("%s: %s while reading bad blocks inode\n"),
1605 ctx->program_name, error_message(retval));
1606 preenhalt(ctx);
1607 log_out(ctx, "%s", _("This doesn't bode well, "
1608 "but we'll try to go on...\n"));
1609 }
1610
1611 /*
1612 * Save the journal size in megabytes.
1613 * Try and use the journal size from the backup else let e2fsck
1614 * find the default journal size.
1615 */
1616 if (sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS)
1617 journal_size = (sb->s_jnl_blocks[15] << (32 - 20)) |
1618 (sb->s_jnl_blocks[16] >> 20);
1619 else
1620 journal_size = -1;
1621
1622 if (sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_QUOTA) {
1623 /* Quotas were enabled. Do quota accounting during fsck. */
1624 if ((sb->s_usr_quota_inum && sb->s_grp_quota_inum) ||
1625 (!sb->s_usr_quota_inum && !sb->s_grp_quota_inum))
1626 qtype = -1;
1627 else
1628 qtype = sb->s_usr_quota_inum ? USRQUOTA : GRPQUOTA;
1629
1630 quota_init_context(&ctx->qctx, ctx->fs, qtype);
1631 }
1632
1633 run_result = e2fsck_run(ctx);
1634 e2fsck_clear_progbar(ctx);
1635
1636 if (ctx->flags & E2F_FLAG_JOURNAL_INODE) {
1637 if (fix_problem(ctx, PR_6_RECREATE_JOURNAL, &pctx)) {
1638 if (journal_size < 1024)
1639 journal_size = ext2fs_default_journal_size(ext2fs_blocks_count(fs->super));
1640 if (journal_size < 0) {
1641 fs->super->s_feature_compat &=
1642 ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
1643 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1644 log_out(ctx, "%s: Couldn't determine "
1645 "journal size\n", ctx->program_name);
1646 goto no_journal;
1647 }
1648 log_out(ctx, _("Creating journal (%d blocks): "),
1649 journal_size);
1650 fflush(stdout);
1651 retval = ext2fs_add_journal_inode(fs,
1652 journal_size, 0);
1653 if (retval) {
1654 log_out(ctx, "%s: while trying to create "
1655 "journal\n", error_message(retval));
1656 goto no_journal;
1657 }
1658 log_out(ctx, "%s", _(" Done.\n"));
1659 log_out(ctx, "%s",
1660 _("\n*** journal has been re-created - "
1661 "filesystem is now ext3 again ***\n"));
1662 }
1663 }
1664 no_journal:
1665
1666 if (ctx->qctx) {
1667 int i, needs_writeout;
1668 for (i = 0; i < MAXQUOTAS; i++) {
1669 if (qtype != -1 && qtype != i)
1670 continue;
1671 needs_writeout = 0;
1672 pctx.num = i;
1673 retval = quota_compare_and_update(ctx->qctx, i,
1674 &needs_writeout);
1675 if ((retval || needs_writeout) &&
1676 fix_problem(ctx, PR_6_UPDATE_QUOTAS, &pctx))
1677 quota_write_inode(ctx->qctx, i);
1678 }
1679 quota_release_context(&ctx->qctx);
1680 }
1681
1682 if (run_result == E2F_FLAG_RESTART) {
1683 log_out(ctx, "%s",
1684 _("Restarting e2fsck from the beginning...\n"));
1685 retval = e2fsck_reset_context(ctx);
1686 if (retval) {
1687 com_err(ctx->program_name, retval, "%s",
1688 _("while resetting context"));
1689 fatal_error(ctx, 0);
1690 }
1691 ext2fs_close(fs);
1692 goto restart;
1693 }
1694 if (run_result & E2F_FLAG_CANCEL) {
1695 log_out(ctx, _("%s: e2fsck canceled.\n"), ctx->device_name ?
1696 ctx->device_name : ctx->filesystem_name);
1697 exit_value |= FSCK_CANCELED;
1698 }
1699 if (run_result & E2F_FLAG_ABORT)
1700 fatal_error(ctx, _("aborted"));
1701 if (check_backup_super_block(ctx)) {
1702 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1703 ext2fs_mark_super_dirty(fs);
1704 }
1705
1706 #ifdef MTRACE
1707 mtrace_print("Cleanup");
1708 #endif
1709 if (ext2fs_test_changed(fs)) {
1710 exit_value |= FSCK_NONDESTRUCT;
1711 if (!(ctx->options & E2F_OPT_PREEN))
1712 log_out(ctx, _("\n%s: ***** FILE SYSTEM WAS "
1713 "MODIFIED *****\n"),
1714 ctx->device_name);
1715 if (ctx->mount_flags & EXT2_MF_ISROOT) {
1716 log_out(ctx, _("%s: ***** REBOOT LINUX *****\n"),
1717 ctx->device_name);
1718 exit_value |= FSCK_REBOOT;
1719 }
1720 }
1721 if (!ext2fs_test_valid(fs) ||
1722 ((exit_value & FSCK_CANCELED) &&
1723 (sb->s_state & EXT2_ERROR_FS))) {
1724 log_out(ctx, _("\n%s: ********** WARNING: Filesystem still has "
1725 "errors **********\n\n"), ctx->device_name);
1726 exit_value |= FSCK_UNCORRECTED;
1727 exit_value &= ~FSCK_NONDESTRUCT;
1728 }
1729 if (exit_value & FSCK_CANCELED) {
1730 int allow_cancellation;
1731
1732 profile_get_boolean(ctx->profile, "options",
1733 "allow_cancellation", 0, 0,
1734 &allow_cancellation);
1735 exit_value &= ~FSCK_NONDESTRUCT;
1736 if (allow_cancellation && ext2fs_test_valid(fs) &&
1737 (sb->s_state & EXT2_VALID_FS) &&
1738 !(sb->s_state & EXT2_ERROR_FS))
1739 exit_value = 0;
1740 } else {
1741 show_stats(ctx);
1742 if (!(ctx->options & E2F_OPT_READONLY)) {
1743 if (ext2fs_test_valid(fs)) {
1744 if (!(sb->s_state & EXT2_VALID_FS))
1745 exit_value |= FSCK_NONDESTRUCT;
1746 sb->s_state = EXT2_VALID_FS;
1747 } else
1748 sb->s_state &= ~EXT2_VALID_FS;
1749 sb->s_mnt_count = 0;
1750 if (!(ctx->flags & E2F_FLAG_TIME_INSANE))
1751 sb->s_lastcheck = ctx->now;
1752 memset(((char *) sb) + EXT4_S_ERR_START, 0,
1753 EXT4_S_ERR_LEN);
1754 ext2fs_mark_super_dirty(fs);
1755 }
1756 }
1757
1758 if ((run_result & E2F_FLAG_CANCEL) == 0 &&
1759 sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_GDT_CSUM &&
1760 !(ctx->options & E2F_OPT_READONLY)) {
1761 retval = ext2fs_set_gdt_csum(ctx->fs);
1762 if (retval) {
1763 com_err(ctx->program_name, retval, "%s",
1764 _("while setting block group checksum info"));
1765 fatal_error(ctx, 0);
1766 }
1767 }
1768
1769 e2fsck_write_bitmaps(ctx);
1770 io_channel_flush(ctx->fs->io);
1771 print_resource_track(ctx, NULL, &ctx->global_rtrack, ctx->fs->io);
1772
1773 ext2fs_close(fs);
1774 ctx->fs = NULL;
1775 free(ctx->journal_name);
1776
1777 e2fsck_free_context(ctx);
1778 remove_error_table(&et_ext2_error_table);
1779 remove_error_table(&et_prof_error_table);
1780 return exit_value;
1781 }
1782