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