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 int broken_system_clock;
299 time_t lastcheck;
300
301 profile_get_boolean(ctx->profile, "options", "broken_system_clock",
302 0, 0, &broken_system_clock);
303 if (ctx->flags & E2F_FLAG_TIME_INSANE)
304 broken_system_clock = 1;
305 profile_get_boolean(ctx->profile, "options",
306 "defer_check_on_battery", 0, 1,
307 &defer_check_on_battery);
308 if (!defer_check_on_battery)
309 batt = 0;
310
311 if ((ctx->options & E2F_OPT_FORCE) || bad_blocks_file || cflag)
312 return;
313
314 if (ctx->options & E2F_OPT_JOURNAL_ONLY)
315 goto skip;
316
317 lastcheck = fs->super->s_lastcheck;
318 if (lastcheck > ctx->now)
319 lastcheck -= ctx->time_fudge;
320 if ((fs->super->s_state & EXT2_ERROR_FS) ||
321 !ext2fs_test_valid(fs))
322 reason = _(" contains a file system with errors");
323 else if ((fs->super->s_state & EXT2_VALID_FS) == 0)
324 reason = _(" was not cleanly unmounted");
325 else if (check_backup_super_block(ctx))
326 reason = _(" primary superblock features different from backup");
327 else if ((fs->super->s_max_mnt_count > 0) &&
328 (fs->super->s_mnt_count >=
329 (unsigned) fs->super->s_max_mnt_count)) {
330 reason = _(" has been mounted %u times without being checked");
331 reason_arg = fs->super->s_mnt_count;
332 if (batt && (fs->super->s_mnt_count <
333 (unsigned) fs->super->s_max_mnt_count*2))
334 reason = 0;
335 } else if (!broken_system_clock && fs->super->s_checkinterval &&
336 (ctx->now < lastcheck)) {
337 reason = _(" has filesystem last checked time in the future");
338 if (batt)
339 reason = 0;
340 } else if (!broken_system_clock && fs->super->s_checkinterval &&
341 ((ctx->now - lastcheck) >=
342 ((time_t) fs->super->s_checkinterval))) {
343 reason = _(" has gone %u days without being checked");
344 reason_arg = (ctx->now - fs->super->s_lastcheck)/(3600*24);
345 if (batt && ((ctx->now - fs->super->s_lastcheck) <
346 fs->super->s_checkinterval*2))
347 reason = 0;
348 }
349 if (reason) {
350 fputs(ctx->device_name, stdout);
351 printf(reason, reason_arg);
352 fputs(_(", check forced.\n"), stdout);
353 return;
354 }
355 printf(_("%s: clean, %u/%u files, %u/%u blocks"), ctx->device_name,
356 fs->super->s_inodes_count - fs->super->s_free_inodes_count,
357 fs->super->s_inodes_count,
358 fs->super->s_blocks_count - fs->super->s_free_blocks_count,
359 fs->super->s_blocks_count);
360 next_check = 100000;
361 if (fs->super->s_max_mnt_count > 0) {
362 next_check = fs->super->s_max_mnt_count - fs->super->s_mnt_count;
363 if (next_check <= 0)
364 next_check = 1;
365 }
366 if (!broken_system_clock && fs->super->s_checkinterval &&
367 ((ctx->now - fs->super->s_lastcheck) >= fs->super->s_checkinterval))
368 next_check = 1;
369 if (next_check <= 5) {
370 if (next_check == 1) {
371 if (batt)
372 fputs(_(" (check deferred; on battery)"),
373 stdout);
374 else
375 fputs(_(" (check after next mount)"), stdout);
376 } else
377 printf(_(" (check in %ld mounts)"), next_check);
378 }
379 fputc('\n', stdout);
380 skip:
381 ext2fs_close(fs);
382 ctx->fs = NULL;
383 e2fsck_free_context(ctx);
384 exit(FSCK_OK);
385 }
386
387 /*
388 * For completion notice
389 */
390 struct percent_tbl {
391 int max_pass;
392 int table[32];
393 };
394 struct percent_tbl e2fsck_tbl = {
395 5, { 0, 70, 90, 92, 95, 100 }
396 };
397 static char bar[128], spaces[128];
398
calc_percent(struct percent_tbl * tbl,int pass,int curr,int max)399 static float calc_percent(struct percent_tbl *tbl, int pass, int curr,
400 int max)
401 {
402 float percent;
403
404 if (pass <= 0)
405 return 0.0;
406 if (pass > tbl->max_pass || max == 0)
407 return 100.0;
408 percent = ((float) curr) / ((float) max);
409 return ((percent * (tbl->table[pass] - tbl->table[pass-1]))
410 + tbl->table[pass-1]);
411 }
412
e2fsck_clear_progbar(e2fsck_t ctx)413 extern void e2fsck_clear_progbar(e2fsck_t ctx)
414 {
415 if (!(ctx->flags & E2F_FLAG_PROG_BAR))
416 return;
417
418 printf("%s%s\r%s", ctx->start_meta, spaces + (sizeof(spaces) - 80),
419 ctx->stop_meta);
420 fflush(stdout);
421 ctx->flags &= ~E2F_FLAG_PROG_BAR;
422 }
423
e2fsck_simple_progress(e2fsck_t ctx,const char * label,float percent,unsigned int dpynum)424 int e2fsck_simple_progress(e2fsck_t ctx, const char *label, float percent,
425 unsigned int dpynum)
426 {
427 static const char spinner[] = "\\|/-";
428 int i;
429 unsigned int tick;
430 struct timeval tv;
431 int dpywidth;
432 int fixed_percent;
433
434 if (ctx->flags & E2F_FLAG_PROG_SUPPRESS)
435 return 0;
436
437 /*
438 * Calculate the new progress position. If the
439 * percentage hasn't changed, then we skip out right
440 * away.
441 */
442 fixed_percent = (int) ((10 * percent) + 0.5);
443 if (ctx->progress_last_percent == fixed_percent)
444 return 0;
445 ctx->progress_last_percent = fixed_percent;
446
447 /*
448 * If we've already updated the spinner once within
449 * the last 1/8th of a second, no point doing it
450 * again.
451 */
452 gettimeofday(&tv, NULL);
453 tick = (tv.tv_sec << 3) + (tv.tv_usec / (1000000 / 8));
454 if ((tick == ctx->progress_last_time) &&
455 (fixed_percent != 0) && (fixed_percent != 1000))
456 return 0;
457 ctx->progress_last_time = tick;
458
459 /*
460 * Advance the spinner, and note that the progress bar
461 * will be on the screen
462 */
463 ctx->progress_pos = (ctx->progress_pos+1) & 3;
464 ctx->flags |= E2F_FLAG_PROG_BAR;
465
466 dpywidth = 66 - strlen(label);
467 dpywidth = 8 * (dpywidth / 8);
468 if (dpynum)
469 dpywidth -= 8;
470
471 i = ((percent * dpywidth) + 50) / 100;
472 printf("%s%s: |%s%s", ctx->start_meta, label,
473 bar + (sizeof(bar) - (i+1)),
474 spaces + (sizeof(spaces) - (dpywidth - i + 1)));
475 if (fixed_percent == 1000)
476 fputc('|', stdout);
477 else
478 fputc(spinner[ctx->progress_pos & 3], stdout);
479 printf(" %4.1f%% ", percent);
480 if (dpynum)
481 printf("%u\r", dpynum);
482 else
483 fputs(" \r", stdout);
484 fputs(ctx->stop_meta, stdout);
485
486 if (fixed_percent == 1000)
487 e2fsck_clear_progbar(ctx);
488 fflush(stdout);
489
490 return 0;
491 }
492
e2fsck_update_progress(e2fsck_t ctx,int pass,unsigned long cur,unsigned long max)493 static int e2fsck_update_progress(e2fsck_t ctx, int pass,
494 unsigned long cur, unsigned long max)
495 {
496 char buf[1024];
497 float percent;
498
499 if (pass == 0)
500 return 0;
501
502 if (ctx->progress_fd) {
503 snprintf(buf, sizeof(buf), "%d %lu %lu %s\n",
504 pass, cur, max, ctx->device_name);
505 write_all(ctx->progress_fd, buf, strlen(buf));
506 } else {
507 percent = calc_percent(&e2fsck_tbl, pass, cur, max);
508 e2fsck_simple_progress(ctx, ctx->device_name,
509 percent, 0);
510 }
511 return 0;
512 }
513
514 #define PATH_SET "PATH=/sbin"
515
reserve_stdio_fds(void)516 static void reserve_stdio_fds(void)
517 {
518 int fd;
519
520 while (1) {
521 fd = open("/dev/null", O_RDWR);
522 if (fd > 2)
523 break;
524 if (fd < 0) {
525 fprintf(stderr, _("ERROR: Couldn't open "
526 "/dev/null (%s)\n"),
527 strerror(errno));
528 break;
529 }
530 }
531 close(fd);
532 }
533
534 #ifdef HAVE_SIGNAL_H
signal_progress_on(int sig EXT2FS_ATTR ((unused)))535 static void signal_progress_on(int sig EXT2FS_ATTR((unused)))
536 {
537 e2fsck_t ctx = e2fsck_global_ctx;
538
539 if (!ctx)
540 return;
541
542 ctx->progress = e2fsck_update_progress;
543 }
544
signal_progress_off(int sig EXT2FS_ATTR ((unused)))545 static void signal_progress_off(int sig EXT2FS_ATTR((unused)))
546 {
547 e2fsck_t ctx = e2fsck_global_ctx;
548
549 if (!ctx)
550 return;
551
552 e2fsck_clear_progbar(ctx);
553 ctx->progress = 0;
554 }
555
signal_cancel(int sig EXT2FS_ATTR ((unused)))556 static void signal_cancel(int sig EXT2FS_ATTR((unused)))
557 {
558 e2fsck_t ctx = e2fsck_global_ctx;
559
560 if (!ctx)
561 exit(FSCK_CANCELED);
562
563 ctx->flags |= E2F_FLAG_CANCEL;
564 }
565 #endif
566
parse_extended_opts(e2fsck_t ctx,const char * opts)567 static void parse_extended_opts(e2fsck_t ctx, const char *opts)
568 {
569 char *buf, *token, *next, *p, *arg;
570 int ea_ver;
571 int extended_usage = 0;
572
573 buf = string_copy(ctx, opts, 0);
574 for (token = buf; token && *token; token = next) {
575 p = strchr(token, ',');
576 next = 0;
577 if (p) {
578 *p = 0;
579 next = p+1;
580 }
581 arg = strchr(token, '=');
582 if (arg) {
583 *arg = 0;
584 arg++;
585 }
586 if (strcmp(token, "ea_ver") == 0) {
587 if (!arg) {
588 extended_usage++;
589 continue;
590 }
591 ea_ver = strtoul(arg, &p, 0);
592 if (*p ||
593 ((ea_ver != 1) && (ea_ver != 2))) {
594 fprintf(stderr,
595 _("Invalid EA version.\n"));
596 extended_usage++;
597 continue;
598 }
599 ctx->ext_attr_ver = ea_ver;
600 } else if (strcmp(token, "fragcheck") == 0) {
601 ctx->options |= E2F_OPT_FRAGCHECK;
602 continue;
603 } else if (strcmp(token, "journal_only") == 0) {
604 if (arg) {
605 extended_usage++;
606 continue;
607 }
608 ctx->options |= E2F_OPT_JOURNAL_ONLY;
609 } else {
610 fprintf(stderr, _("Unknown extended option: %s\n"),
611 token);
612 extended_usage++;
613 }
614 }
615 free(buf);
616
617 if (extended_usage) {
618 fputs(("\nExtended options are separated by commas, "
619 "and may take an argument which\n"
620 "is set off by an equals ('=') sign. "
621 "Valid extended options are:\n"), stderr);
622 fputs(("\tea_ver=<ea_version (1 or 2)>\n"), stderr);
623 fputs(("\tfragcheck\n"), stderr);
624 fputs(("\tjournal_only\n"), stderr);
625 fputc('\n', stderr);
626 exit(1);
627 }
628 }
629
syntax_err_report(const char * filename,long err,int line_num)630 static void syntax_err_report(const char *filename, long err, int line_num)
631 {
632 fprintf(stderr,
633 _("Syntax error in e2fsck config file (%s, line #%d)\n\t%s\n"),
634 filename, line_num, error_message(err));
635 exit(FSCK_ERROR);
636 }
637
638 static const char *config_fn[] = { ROOT_SYSCONFDIR "/e2fsck.conf", 0 };
639
PRS(int argc,char * argv[],e2fsck_t * ret_ctx)640 static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx)
641 {
642 int flush = 0;
643 int c, fd;
644 #ifdef MTRACE
645 extern void *mallwatch;
646 #endif
647 e2fsck_t ctx;
648 errcode_t retval;
649 #ifdef HAVE_SIGNAL_H
650 struct sigaction sa;
651 #endif
652 char *extended_opts = 0;
653 char *cp;
654 int res; /* result of sscanf */
655 #ifdef CONFIG_JBD_DEBUG
656 char *jbd_debug;
657 #endif
658
659 retval = e2fsck_allocate_context(&ctx);
660 if (retval)
661 return retval;
662
663 *ret_ctx = ctx;
664
665 setvbuf(stdout, NULL, _IONBF, BUFSIZ);
666 setvbuf(stderr, NULL, _IONBF, BUFSIZ);
667 if (isatty(0) && isatty(1)) {
668 ctx->interactive = 1;
669 } else {
670 ctx->start_meta[0] = '\001';
671 ctx->stop_meta[0] = '\002';
672 }
673 memset(bar, '=', sizeof(bar)-1);
674 memset(spaces, ' ', sizeof(spaces)-1);
675 add_error_table(&et_ext2_error_table);
676 add_error_table(&et_prof_error_table);
677 blkid_get_cache(&ctx->blkid, NULL);
678
679 if (argc && *argv)
680 ctx->program_name = *argv;
681 else
682 ctx->program_name = "e2fsck";
683 while ((c = getopt (argc, argv, "panyrcC:B:dE:fvtFVM:b:I:j:P:l:L:N:SsDk")) != EOF)
684 switch (c) {
685 case 'C':
686 ctx->progress = e2fsck_update_progress;
687 res = sscanf(optarg, "%d", &ctx->progress_fd);
688 if (res != 1)
689 goto sscanf_err;
690
691 if (ctx->progress_fd < 0) {
692 ctx->progress = 0;
693 ctx->progress_fd = ctx->progress_fd * -1;
694 }
695 if (!ctx->progress_fd)
696 break;
697 /* Validate the file descriptor to avoid disasters */
698 fd = dup(ctx->progress_fd);
699 if (fd < 0) {
700 fprintf(stderr,
701 _("Error validating file descriptor %d: %s\n"),
702 ctx->progress_fd,
703 error_message(errno));
704 fatal_error(ctx,
705 _("Invalid completion information file descriptor"));
706 } else
707 close(fd);
708 break;
709 case 'D':
710 ctx->options |= E2F_OPT_COMPRESS_DIRS;
711 break;
712 case 'E':
713 extended_opts = optarg;
714 break;
715 case 'p':
716 case 'a':
717 if (ctx->options & (E2F_OPT_YES|E2F_OPT_NO)) {
718 conflict_opt:
719 fatal_error(ctx,
720 _("Only one of the options -p/-a, -n or -y may be specified."));
721 }
722 ctx->options |= E2F_OPT_PREEN;
723 break;
724 case 'n':
725 if (ctx->options & (E2F_OPT_YES|E2F_OPT_PREEN))
726 goto conflict_opt;
727 ctx->options |= E2F_OPT_NO;
728 break;
729 case 'y':
730 if (ctx->options & (E2F_OPT_PREEN|E2F_OPT_NO))
731 goto conflict_opt;
732 ctx->options |= E2F_OPT_YES;
733 break;
734 case 't':
735 #ifdef RESOURCE_TRACK
736 if (ctx->options & E2F_OPT_TIME)
737 ctx->options |= E2F_OPT_TIME2;
738 else
739 ctx->options |= E2F_OPT_TIME;
740 #else
741 fprintf(stderr, _("The -t option is not "
742 "supported on this version of e2fsck.\n"));
743 #endif
744 break;
745 case 'c':
746 if (cflag++)
747 ctx->options |= E2F_OPT_WRITECHECK;
748 ctx->options |= E2F_OPT_CHECKBLOCKS;
749 break;
750 case 'r':
751 /* What we do by default, anyway! */
752 break;
753 case 'b':
754 res = sscanf(optarg, "%u", &ctx->use_superblock);
755 if (res != 1)
756 goto sscanf_err;
757 ctx->flags |= E2F_FLAG_SB_SPECIFIED;
758 break;
759 case 'B':
760 ctx->blocksize = atoi(optarg);
761 break;
762 case 'I':
763 res = sscanf(optarg, "%d", &ctx->inode_buffer_blocks);
764 if (res != 1)
765 goto sscanf_err;
766 break;
767 case 'j':
768 ctx->journal_name = blkid_get_devname(ctx->blkid,
769 optarg, NULL);
770 if (!ctx->journal_name) {
771 com_err(ctx->program_name, 0,
772 _("Unable to resolve '%s'"),
773 optarg);
774 fatal_error(ctx, 0);
775 }
776 break;
777 case 'P':
778 res = sscanf(optarg, "%d", &ctx->process_inode_size);
779 if (res != 1)
780 goto sscanf_err;
781 break;
782 case 'L':
783 replace_bad_blocks++;
784 case 'l':
785 bad_blocks_file = string_copy(ctx, optarg, 0);
786 break;
787 case 'd':
788 ctx->options |= E2F_OPT_DEBUG;
789 break;
790 case 'f':
791 ctx->options |= E2F_OPT_FORCE;
792 break;
793 case 'F':
794 flush = 1;
795 break;
796 case 'v':
797 verbose = 1;
798 break;
799 case 'V':
800 show_version_only = 1;
801 break;
802 #ifdef MTRACE
803 case 'M':
804 mallwatch = (void *) strtol(optarg, NULL, 0);
805 break;
806 #endif
807 case 'N':
808 ctx->device_name = string_copy(ctx, optarg, 0);
809 break;
810 case 'k':
811 keep_bad_blocks++;
812 break;
813 default:
814 usage(ctx);
815 }
816 if (show_version_only)
817 return 0;
818 if (optind != argc - 1)
819 usage(ctx);
820 if ((ctx->options & E2F_OPT_NO) &&
821 (ctx->options & E2F_OPT_COMPRESS_DIRS)) {
822 com_err(ctx->program_name, 0,
823 _("The -n and -D options are incompatible."));
824 fatal_error(ctx, 0);
825 }
826 if ((ctx->options & E2F_OPT_NO) && cflag) {
827 com_err(ctx->program_name, 0,
828 _("The -n and -c options are incompatible."));
829 fatal_error(ctx, 0);
830 }
831 if ((ctx->options & E2F_OPT_NO) && bad_blocks_file) {
832 com_err(ctx->program_name, 0,
833 _("The -n and -l/-L options are incompatible."));
834 fatal_error(ctx, 0);
835 }
836 if (ctx->options & E2F_OPT_NO)
837 ctx->options |= E2F_OPT_READONLY;
838
839 ctx->io_options = strchr(argv[optind], '?');
840 if (ctx->io_options)
841 *ctx->io_options++ = 0;
842 ctx->filesystem_name = blkid_get_devname(ctx->blkid, argv[optind], 0);
843 if (!ctx->filesystem_name) {
844 com_err(ctx->program_name, 0, _("Unable to resolve '%s'"),
845 argv[optind]);
846 fatal_error(ctx, 0);
847 }
848 if (extended_opts)
849 parse_extended_opts(ctx, extended_opts);
850
851 if ((cp = getenv("E2FSCK_CONFIG")) != NULL)
852 config_fn[0] = cp;
853 profile_set_syntax_err_cb(syntax_err_report);
854 profile_init(config_fn, &ctx->profile);
855
856 if (flush) {
857 fd = open(ctx->filesystem_name, O_RDONLY, 0);
858 if (fd < 0) {
859 com_err("open", errno,
860 _("while opening %s for flushing"),
861 ctx->filesystem_name);
862 fatal_error(ctx, 0);
863 }
864 if ((retval = ext2fs_sync_device(fd, 1))) {
865 com_err("ext2fs_sync_device", retval,
866 _("while trying to flush %s"),
867 ctx->filesystem_name);
868 fatal_error(ctx, 0);
869 }
870 close(fd);
871 }
872 if (cflag && bad_blocks_file) {
873 fprintf(stderr, _("The -c and the -l/-L options may "
874 "not be both used at the same time.\n"));
875 exit(FSCK_USAGE);
876 }
877 #ifdef HAVE_SIGNAL_H
878 /*
879 * Set up signal action
880 */
881 memset(&sa, 0, sizeof(struct sigaction));
882 sa.sa_handler = signal_cancel;
883 sigaction(SIGINT, &sa, 0);
884 sigaction(SIGTERM, &sa, 0);
885 #ifdef SA_RESTART
886 sa.sa_flags = SA_RESTART;
887 #endif
888 e2fsck_global_ctx = ctx;
889 sa.sa_handler = signal_progress_on;
890 sigaction(SIGUSR1, &sa, 0);
891 sa.sa_handler = signal_progress_off;
892 sigaction(SIGUSR2, &sa, 0);
893 #endif
894
895 /* Update our PATH to include /sbin if we need to run badblocks */
896 if (cflag) {
897 char *oldpath = getenv("PATH");
898 char *newpath;
899 int len = sizeof(PATH_SET) + 1;
900
901 if (oldpath)
902 len += strlen(oldpath);
903
904 newpath = malloc(len);
905 if (!newpath)
906 fatal_error(ctx, "Couldn't malloc() newpath");
907 strcpy(newpath, PATH_SET);
908
909 if (oldpath) {
910 strcat(newpath, ":");
911 strcat(newpath, oldpath);
912 }
913 putenv(newpath);
914 }
915 #ifdef CONFIG_JBD_DEBUG
916 jbd_debug = getenv("E2FSCK_JBD_DEBUG");
917 if (jbd_debug) {
918 res = sscanf(jbd_debug, "%d", &journal_enable_debug);
919 if (res != 1) {
920 fprintf(stderr,
921 _("E2FSCK_JBD_DEBUG \"%s\" not an integer\n\n"),
922 jbd_debug);
923 exit (1);
924 }
925 }
926 #endif
927 return 0;
928
929 sscanf_err:
930 fprintf(stderr, _("\nInvalid non-numeric argument to -%c (\"%s\")\n\n"),
931 c, optarg);
932 exit (1);
933 }
934
try_open_fs(e2fsck_t ctx,int flags,io_manager io_ptr,ext2_filsys * ret_fs)935 static errcode_t try_open_fs(e2fsck_t ctx, int flags, io_manager io_ptr,
936 ext2_filsys *ret_fs)
937 {
938 errcode_t retval;
939
940 *ret_fs = NULL;
941 if (ctx->superblock && ctx->blocksize) {
942 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
943 flags, ctx->superblock, ctx->blocksize,
944 io_ptr, ret_fs);
945 } else if (ctx->superblock) {
946 int blocksize;
947 for (blocksize = EXT2_MIN_BLOCK_SIZE;
948 blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) {
949 if (*ret_fs) {
950 ext2fs_free(*ret_fs);
951 *ret_fs = NULL;
952 }
953 retval = ext2fs_open2(ctx->filesystem_name,
954 ctx->io_options, flags,
955 ctx->superblock, blocksize,
956 io_ptr, ret_fs);
957 if (!retval)
958 break;
959 }
960 } else
961 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
962 flags, 0, 0, io_ptr, ret_fs);
963 return retval;
964 }
965
966
967 static const char *my_ver_string = E2FSPROGS_VERSION;
968 static const char *my_ver_date = E2FSPROGS_DATE;
969
main(int argc,char * argv[])970 int main (int argc, char *argv[])
971 {
972 errcode_t retval = 0, retval2 = 0, orig_retval = 0;
973 int exit_value = FSCK_OK;
974 ext2_filsys fs = 0;
975 io_manager io_ptr;
976 struct ext2_super_block *sb;
977 const char *lib_ver_date;
978 int my_ver, lib_ver;
979 e2fsck_t ctx;
980 blk_t orig_superblock;
981 struct problem_context pctx;
982 int flags, run_result;
983 int journal_size;
984 int sysval, sys_page_size = 4096;
985 __u32 features[3];
986 char *cp;
987
988 clear_problem_context(&pctx);
989 #ifdef MTRACE
990 mtrace();
991 #endif
992 #ifdef MCHECK
993 mcheck(0);
994 #endif
995 #ifdef ENABLE_NLS
996 setlocale(LC_MESSAGES, "");
997 setlocale(LC_CTYPE, "");
998 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
999 textdomain(NLS_CAT_NAME);
1000 #endif
1001 my_ver = ext2fs_parse_version_string(my_ver_string);
1002 lib_ver = ext2fs_get_library_version(0, &lib_ver_date);
1003 if (my_ver > lib_ver) {
1004 fprintf( stderr, _("Error: ext2fs library version "
1005 "out of date!\n"));
1006 show_version_only++;
1007 }
1008
1009 retval = PRS(argc, argv, &ctx);
1010 if (retval) {
1011 com_err("e2fsck", retval,
1012 _("while trying to initialize program"));
1013 exit(FSCK_ERROR);
1014 }
1015 reserve_stdio_fds();
1016
1017 init_resource_track(&ctx->global_rtrack, NULL);
1018 if (!(ctx->options & E2F_OPT_PREEN) || show_version_only)
1019 fprintf(stderr, "e2fsck %s (%s)\n", my_ver_string,
1020 my_ver_date);
1021
1022 if (show_version_only) {
1023 fprintf(stderr, _("\tUsing %s, %s\n"),
1024 error_message(EXT2_ET_BASE), lib_ver_date);
1025 exit(FSCK_OK);
1026 }
1027
1028 check_mount(ctx);
1029
1030 if (!(ctx->options & E2F_OPT_PREEN) &&
1031 !(ctx->options & E2F_OPT_NO) &&
1032 !(ctx->options & E2F_OPT_YES)) {
1033 if (!ctx->interactive)
1034 fatal_error(ctx,
1035 _("need terminal for interactive repairs"));
1036 }
1037 ctx->superblock = ctx->use_superblock;
1038 restart:
1039 #ifdef CONFIG_TESTIO_DEBUG
1040 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1041 io_ptr = test_io_manager;
1042 test_io_backing_manager = unix_io_manager;
1043 } else
1044 #endif
1045 io_ptr = unix_io_manager;
1046 flags = EXT2_FLAG_NOFREE_ON_ERROR;
1047 if ((ctx->options & E2F_OPT_READONLY) == 0)
1048 flags |= EXT2_FLAG_RW;
1049 if ((ctx->mount_flags & EXT2_MF_MOUNTED) == 0)
1050 flags |= EXT2_FLAG_EXCLUSIVE;
1051
1052 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1053
1054 if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) &&
1055 !(ctx->flags & E2F_FLAG_SB_SPECIFIED) &&
1056 ((retval == EXT2_ET_BAD_MAGIC) ||
1057 (retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
1058 ((retval == 0) && (retval2 = ext2fs_check_desc(fs))))) {
1059 if (retval2 == ENOMEM) {
1060 retval = retval2;
1061 goto failure;
1062 }
1063 if (fs->flags & EXT2_FLAG_NOFREE_ON_ERROR) {
1064 ext2fs_free(fs);
1065 fs = NULL;
1066 }
1067 if (!fs || (fs->group_desc_count > 1)) {
1068 printf(_("%s: %s trying backup blocks...\n"),
1069 ctx->program_name,
1070 retval ? _("Superblock invalid,") :
1071 _("Group descriptors look bad..."));
1072 orig_superblock = ctx->superblock;
1073 get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr);
1074 if (fs)
1075 ext2fs_close(fs);
1076 orig_retval = retval;
1077 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1078 if ((orig_retval == 0) && retval != 0) {
1079 if (fs)
1080 ext2fs_close(fs);
1081 com_err(ctx->program_name, retval,
1082 "when using the backup blocks");
1083 printf(_("%s: going back to original "
1084 "superblock\n"), ctx->program_name);
1085 ctx->superblock = orig_superblock;
1086 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1087 }
1088 }
1089 }
1090 if (((retval == EXT2_ET_UNSUPP_FEATURE) ||
1091 (retval == EXT2_ET_RO_UNSUPP_FEATURE)) &&
1092 fs && fs->super) {
1093 sb = fs->super;
1094 features[0] = (sb->s_feature_compat &
1095 ~EXT2_LIB_FEATURE_COMPAT_SUPP);
1096 features[1] = (sb->s_feature_incompat &
1097 ~EXT2_LIB_FEATURE_INCOMPAT_SUPP);
1098 features[2] = (sb->s_feature_ro_compat &
1099 ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1100 if (features[0] || features[1] || features[2])
1101 goto print_unsupp_features;
1102 }
1103 failure:
1104 if (retval) {
1105 if (orig_retval)
1106 retval = orig_retval;
1107 com_err(ctx->program_name, retval, _("while trying to open %s"),
1108 ctx->filesystem_name);
1109 if (retval == EXT2_ET_REV_TOO_HIGH) {
1110 printf(_("The filesystem revision is apparently "
1111 "too high for this version of e2fsck.\n"
1112 "(Or the filesystem superblock "
1113 "is corrupt)\n\n"));
1114 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1115 } else if (retval == EXT2_ET_SHORT_READ)
1116 printf(_("Could this be a zero-length partition?\n"));
1117 else if ((retval == EPERM) || (retval == EACCES))
1118 printf(_("You must have %s access to the "
1119 "filesystem or be root\n"),
1120 (ctx->options & E2F_OPT_READONLY) ?
1121 "r/o" : "r/w");
1122 else if (retval == ENXIO)
1123 printf(_("Possibly non-existent or swap device?\n"));
1124 else if (retval == EBUSY)
1125 printf(_("Filesystem mounted or opened exclusively "
1126 "by another program?\n"));
1127 else if (retval == ENOENT)
1128 printf(_("Possibly non-existent device?\n"));
1129 #ifdef EROFS
1130 else if (retval == EROFS)
1131 printf(_("Disk write-protected; use the -n option "
1132 "to do a read-only\n"
1133 "check of the device.\n"));
1134 #endif
1135 else
1136 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1137 fatal_error(ctx, 0);
1138 }
1139 /*
1140 * We only update the master superblock because (a) paranoia;
1141 * we don't want to corrupt the backup superblocks, and (b) we
1142 * don't need to update the mount count and last checked
1143 * fields in the backup superblock (the kernel doesn't update
1144 * the backup superblocks anyway). With newer versions of the
1145 * library this flag is set by ext2fs_open2(), but we set this
1146 * here just to be sure. (No, we don't support e2fsck running
1147 * with some other libext2fs than the one that it was shipped
1148 * with, but just in case....)
1149 */
1150 fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
1151
1152 if (!(ctx->flags & E2F_FLAG_GOT_DEVSIZE)) {
1153 __u32 blocksize = EXT2_BLOCK_SIZE(fs->super);
1154 int need_restart = 0;
1155
1156 pctx.errcode = ext2fs_get_device_size2(ctx->filesystem_name,
1157 blocksize,
1158 &ctx->num_blocks);
1159 /*
1160 * The floppy driver refuses to allow anyone else to
1161 * open the device if has been opened with O_EXCL;
1162 * this is unlike other block device drivers in Linux.
1163 * To handle this, we close the filesystem and then
1164 * reopen the filesystem after we get the device size.
1165 */
1166 if (pctx.errcode == EBUSY) {
1167 ext2fs_close(fs);
1168 need_restart++;
1169 pctx.errcode =
1170 ext2fs_get_device_size2(ctx->filesystem_name,
1171 blocksize,
1172 &ctx->num_blocks);
1173 }
1174 if (pctx.errcode == EXT2_ET_UNIMPLEMENTED)
1175 ctx->num_blocks = 0;
1176 else if (pctx.errcode) {
1177 fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx);
1178 ctx->flags |= E2F_FLAG_ABORT;
1179 fatal_error(ctx, 0);
1180 }
1181 ctx->flags |= E2F_FLAG_GOT_DEVSIZE;
1182 if (need_restart)
1183 goto restart;
1184 }
1185
1186 ctx->fs = fs;
1187 fs->priv_data = ctx;
1188 fs->now = ctx->now;
1189 sb = fs->super;
1190 if (sb->s_rev_level > E2FSCK_CURRENT_REV) {
1191 com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH,
1192 _("while trying to open %s"),
1193 ctx->filesystem_name);
1194 get_newer:
1195 fatal_error(ctx, _("Get a newer version of e2fsck!"));
1196 }
1197
1198 /*
1199 * Set the device name, which is used whenever we print error
1200 * or informational messages to the user.
1201 */
1202 if (ctx->device_name == 0 &&
1203 (sb->s_volume_name[0] != 0)) {
1204 ctx->device_name = string_copy(ctx, sb->s_volume_name,
1205 sizeof(sb->s_volume_name));
1206 }
1207 if (ctx->device_name == 0)
1208 ctx->device_name = string_copy(ctx, ctx->filesystem_name, 0);
1209 for (cp = ctx->device_name; *cp; cp++)
1210 if (isspace(*cp) || *cp == ':')
1211 *cp = '_';
1212
1213 ehandler_init(fs->io);
1214
1215 if ((ctx->mount_flags & EXT2_MF_MOUNTED) &&
1216 !(sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER))
1217 goto skip_journal;
1218
1219 /*
1220 * Make sure the ext3 superblock fields are consistent.
1221 */
1222 retval = e2fsck_check_ext3_journal(ctx);
1223 if (retval) {
1224 com_err(ctx->program_name, retval,
1225 _("while checking ext3 journal for %s"),
1226 ctx->device_name);
1227 fatal_error(ctx, 0);
1228 }
1229
1230 /*
1231 * Check to see if we need to do ext3-style recovery. If so,
1232 * do it, and then restart the fsck.
1233 */
1234 if (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) {
1235 if (ctx->options & E2F_OPT_READONLY) {
1236 printf(_("Warning: skipping journal recovery "
1237 "because doing a read-only filesystem "
1238 "check.\n"));
1239 io_channel_flush(ctx->fs->io);
1240 } else {
1241 if (ctx->flags & E2F_FLAG_RESTARTED) {
1242 /*
1243 * Whoops, we attempted to run the
1244 * journal twice. This should never
1245 * happen, unless the hardware or
1246 * device driver is being bogus.
1247 */
1248 com_err(ctx->program_name, 0,
1249 _("unable to set superblock flags on %s\n"), ctx->device_name);
1250 fatal_error(ctx, 0);
1251 }
1252 retval = e2fsck_run_ext3_journal(ctx);
1253 if (retval) {
1254 com_err(ctx->program_name, retval,
1255 _("while recovering ext3 journal of %s"),
1256 ctx->device_name);
1257 fatal_error(ctx, 0);
1258 }
1259 ext2fs_close(ctx->fs);
1260 ctx->fs = 0;
1261 ctx->flags |= E2F_FLAG_RESTARTED;
1262 goto restart;
1263 }
1264 }
1265
1266 skip_journal:
1267 /*
1268 * Check for compatibility with the feature sets. We need to
1269 * be more stringent than ext2fs_open().
1270 */
1271 features[0] = sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP;
1272 features[1] = sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP;
1273 features[2] = (sb->s_feature_ro_compat &
1274 ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1275 print_unsupp_features:
1276 if (features[0] || features[1] || features[2]) {
1277 int i, j;
1278 __u32 *mask = features, m;
1279
1280 fprintf(stderr, _("%s has unsupported feature(s):"),
1281 ctx->filesystem_name);
1282
1283 for (i=0; i <3; i++,mask++) {
1284 for (j=0,m=1; j < 32; j++, m<<=1) {
1285 if (*mask & m)
1286 fprintf(stderr, " %s",
1287 e2p_feature2string(i, m));
1288 }
1289 }
1290 putc('\n', stderr);
1291 goto get_newer;
1292 }
1293 #ifdef ENABLE_COMPRESSION
1294 if (sb->s_feature_incompat & EXT2_FEATURE_INCOMPAT_COMPRESSION)
1295 com_err(ctx->program_name, 0,
1296 _("Warning: compression support is experimental.\n"));
1297 #endif
1298 #ifndef ENABLE_HTREE
1299 if (sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) {
1300 com_err(ctx->program_name, 0,
1301 _("E2fsck not compiled with HTREE support,\n\t"
1302 "but filesystem %s has HTREE directories.\n"),
1303 ctx->device_name);
1304 goto get_newer;
1305 }
1306 #endif
1307
1308 /*
1309 * If the user specified a specific superblock, presumably the
1310 * master superblock has been trashed. So we mark the
1311 * superblock as dirty, so it can be written out.
1312 */
1313 if (ctx->superblock &&
1314 !(ctx->options & E2F_OPT_READONLY))
1315 ext2fs_mark_super_dirty(fs);
1316
1317 /*
1318 * Calculate the number of filesystem blocks per pagesize. If
1319 * fs->blocksize > page_size, set the number of blocks per
1320 * pagesize to 1 to avoid division by zero errors.
1321 */
1322 #ifdef _SC_PAGESIZE
1323 sysval = sysconf(_SC_PAGESIZE);
1324 if (sysval > 0)
1325 sys_page_size = sysval;
1326 #endif /* _SC_PAGESIZE */
1327 ctx->blocks_per_page = sys_page_size / fs->blocksize;
1328 if (ctx->blocks_per_page == 0)
1329 ctx->blocks_per_page = 1;
1330
1331 if (ctx->superblock)
1332 set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0);
1333 ext2fs_mark_valid(fs);
1334 check_super_block(ctx);
1335 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1336 fatal_error(ctx, 0);
1337 check_if_skip(ctx);
1338 check_resize_inode(ctx);
1339 if (bad_blocks_file)
1340 read_bad_blocks_file(ctx, bad_blocks_file, replace_bad_blocks);
1341 else if (cflag)
1342 read_bad_blocks_file(ctx, 0, !keep_bad_blocks); /* Test disk */
1343 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1344 fatal_error(ctx, 0);
1345
1346 /*
1347 * Mark the system as valid, 'til proven otherwise
1348 */
1349 ext2fs_mark_valid(fs);
1350
1351 retval = ext2fs_read_bb_inode(fs, &fs->badblocks);
1352 if (retval) {
1353 com_err(ctx->program_name, retval,
1354 _("while reading bad blocks inode"));
1355 preenhalt(ctx);
1356 printf(_("This doesn't bode well,"
1357 " but we'll try to go on...\n"));
1358 }
1359
1360 /*
1361 * Save the journal size in megabytes.
1362 * Try and use the journal size from the backup else let e2fsck
1363 * find the default journal size.
1364 */
1365 if (sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS)
1366 journal_size = sb->s_jnl_blocks[16] >> 20;
1367 else
1368 journal_size = -1;
1369
1370 run_result = e2fsck_run(ctx);
1371 e2fsck_clear_progbar(ctx);
1372
1373 if (ctx->flags & E2F_FLAG_JOURNAL_INODE) {
1374 if (fix_problem(ctx, PR_6_RECREATE_JOURNAL, &pctx)) {
1375 if (journal_size < 1024)
1376 journal_size = ext2fs_default_journal_size(fs->super->s_blocks_count);
1377 if (journal_size < 0) {
1378 fs->super->s_feature_compat &=
1379 ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
1380 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1381 com_err(ctx->program_name, 0,
1382 _("Couldn't determine journal size"));
1383 goto no_journal;
1384 }
1385 printf(_("Creating journal (%d blocks): "),
1386 journal_size);
1387 fflush(stdout);
1388 retval = ext2fs_add_journal_inode(fs,
1389 journal_size, 0);
1390 if (retval) {
1391 com_err("Error ", retval,
1392 _("\n\twhile trying to create journal"));
1393 goto no_journal;
1394 }
1395 printf(_(" Done.\n"));
1396 printf(_("\n*** journal has been re-created - "
1397 "filesystem is now ext3 again ***\n"));
1398 }
1399 }
1400 no_journal:
1401
1402 if (run_result == E2F_FLAG_RESTART) {
1403 printf(_("Restarting e2fsck from the beginning...\n"));
1404 retval = e2fsck_reset_context(ctx);
1405 if (retval) {
1406 com_err(ctx->program_name, retval,
1407 _("while resetting context"));
1408 fatal_error(ctx, 0);
1409 }
1410 ext2fs_close(fs);
1411 goto restart;
1412 }
1413 if (run_result & E2F_FLAG_CANCEL) {
1414 printf(_("%s: e2fsck canceled.\n"), ctx->device_name ?
1415 ctx->device_name : ctx->filesystem_name);
1416 exit_value |= FSCK_CANCELED;
1417 }
1418 if (run_result & E2F_FLAG_ABORT)
1419 fatal_error(ctx, _("aborted"));
1420 if (check_backup_super_block(ctx)) {
1421 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1422 ext2fs_mark_super_dirty(fs);
1423 }
1424
1425 #ifdef MTRACE
1426 mtrace_print("Cleanup");
1427 #endif
1428 if (ext2fs_test_changed(fs)) {
1429 exit_value |= FSCK_NONDESTRUCT;
1430 if (!(ctx->options & E2F_OPT_PREEN))
1431 printf(_("\n%s: ***** FILE SYSTEM WAS MODIFIED *****\n"),
1432 ctx->device_name);
1433 if (ctx->mount_flags & EXT2_MF_ISROOT) {
1434 printf(_("%s: ***** REBOOT LINUX *****\n"),
1435 ctx->device_name);
1436 exit_value |= FSCK_REBOOT;
1437 }
1438 }
1439 if (!ext2fs_test_valid(fs) ||
1440 ((exit_value & FSCK_CANCELED) &&
1441 (sb->s_state & EXT2_ERROR_FS))) {
1442 printf(_("\n%s: ********** WARNING: Filesystem still has "
1443 "errors **********\n\n"), ctx->device_name);
1444 exit_value |= FSCK_UNCORRECTED;
1445 exit_value &= ~FSCK_NONDESTRUCT;
1446 }
1447 if (exit_value & FSCK_CANCELED) {
1448 int allow_cancellation;
1449
1450 profile_get_boolean(ctx->profile, "options",
1451 "allow_cancellation", 0, 0,
1452 &allow_cancellation);
1453 exit_value &= ~FSCK_NONDESTRUCT;
1454 if (allow_cancellation && ext2fs_test_valid(fs) &&
1455 (sb->s_state & EXT2_VALID_FS) &&
1456 !(sb->s_state & EXT2_ERROR_FS))
1457 exit_value = 0;
1458 } else {
1459 show_stats(ctx);
1460 if (!(ctx->options & E2F_OPT_READONLY)) {
1461 if (ext2fs_test_valid(fs)) {
1462 if (!(sb->s_state & EXT2_VALID_FS))
1463 exit_value |= FSCK_NONDESTRUCT;
1464 sb->s_state = EXT2_VALID_FS;
1465 } else
1466 sb->s_state &= ~EXT2_VALID_FS;
1467 sb->s_mnt_count = 0;
1468 if (!(ctx->flags & E2F_FLAG_TIME_INSANE))
1469 sb->s_lastcheck = ctx->now;
1470 memset(((char *) sb) + EXT4_S_ERR_START, 0,
1471 EXT4_S_ERR_LEN);
1472 ext2fs_mark_super_dirty(fs);
1473 }
1474 }
1475
1476 if ((run_result & E2F_FLAG_CANCEL) == 0 &&
1477 sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_GDT_CSUM &&
1478 !(ctx->options & E2F_OPT_READONLY)) {
1479 retval = ext2fs_set_gdt_csum(ctx->fs);
1480 if (retval) {
1481 com_err(ctx->program_name, retval,
1482 _("while setting block group checksum info"));
1483 fatal_error(ctx, 0);
1484 }
1485 }
1486
1487 e2fsck_write_bitmaps(ctx);
1488 io_channel_flush(ctx->fs->io);
1489 print_resource_track(ctx, NULL, &ctx->global_rtrack, ctx->fs->io);
1490
1491 ext2fs_close(fs);
1492 ctx->fs = NULL;
1493 free(ctx->journal_name);
1494
1495 e2fsck_free_context(ctx);
1496 remove_error_table(&et_ext2_error_table);
1497 remove_error_table(&et_prof_error_table);
1498 return exit_value;
1499 }
1500