aboutsummaryrefslogtreecommitdiff
path: root/e2fsprogs/e2fsck.c
diff options
context:
space:
mode:
Diffstat (limited to 'e2fsprogs/e2fsck.c')
-rw-r--r--e2fsprogs/e2fsck.c1179
1 files changed, 1179 insertions, 0 deletions
diff --git a/e2fsprogs/e2fsck.c b/e2fsprogs/e2fsck.c
new file mode 100644
index 000000000..f1adc8549
--- /dev/null
+++ b/e2fsprogs/e2fsck.c
@@ -0,0 +1,1179 @@
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#include <stdio.h>
13#include <stdlib.h>
14#include <string.h>
15#include <fcntl.h>
16#include <ctype.h>
17#include <time.h>
18#ifdef HAVE_SIGNAL_H
19#include <signal.h>
20#endif
21#ifdef HAVE_GETOPT_H
22#include <getopt.h>
23#else
24extern char *optarg;
25extern int optind;
26#endif
27#include <unistd.h>
28#ifdef HAVE_ERRNO_H
29#include <errno.h>
30#endif
31#ifdef HAVE_MNTENT_H
32#include <mntent.h>
33#endif
34#ifdef HAVE_SYS_IOCTL_H
35#include <sys/ioctl.h>
36#endif
37#ifdef HAVE_MALLOC_H
38#include <malloc.h>
39#endif
40#ifdef HAVE_SYS_TYPES_H
41#include <sys/types.h>
42#endif
43#ifdef HAVE_DIRENT_H
44#include <dirent.h>
45#endif
46
47#include "e2fsbb.h"
48#include "et/com_err.h"
49#include "e2fsck/e2fsck.h"
50#include "e2fsck/problem.h"
51//#include "../version.h"
52
53/* Command line options */
54static int swapfs;
55#ifdef ENABLE_SWAPFS
56static int normalize_swapfs;
57#endif
58static int cflag; /* check disk */
59static int show_version_only;
60static int verbose;
61
62static int replace_bad_blocks;
63static int keep_bad_blocks;
64static char *bad_blocks_file;
65
66e2fsck_t e2fsck_global_ctx; /* Try your very best not to use this! */
67
68#ifdef __CONFIG_JBD_DEBUG__E2FS /* Enabled by configure --enable-jfs-debug */
69int journal_enable_debug = -1;
70#endif
71
72#if 0
73static void usage(e2fsck_t ctx)
74{
75 fprintf(stderr,
76 _("Usage: %s [-panyrcdfvstDFSV] [-b superblock] [-B blocksize]\n"
77 "\t\t[-I inode_buffer_blocks] [-P process_inode_size]\n"
78 "\t\t[-l|-L bad_blocks_file] [-C fd] [-j ext-journal]\n"
79 "\t\t[-E extended-options] device\n"),
80 ctx->program_name);
81
82 fprintf(stderr, _("\nEmergency help:\n"
83 " -p Automatic repair (no questions)\n"
84 " -n Make no changes to the filesystem\n"
85 " -y Assume \"yes\" to all questions\n"
86 " -c Check for bad blocks and add them to the badblock list\n"
87 " -f Force checking even if filesystem is marked clean\n"));
88 fprintf(stderr, _(""
89 " -v Be verbose\n"
90 " -b superblock Use alternative superblock\n"
91 " -B blocksize Force blocksize when looking for superblock\n"
92 " -j external-journal Set location of the external journal\n"
93 " -l bad_blocks_file Add to badblocks list\n"
94 " -L bad_blocks_file Set badblocks list\n"
95 ));
96
97 exit(FSCK_USAGE);
98}
99#endif
100
101static void show_stats(e2fsck_t ctx)
102{
103 ext2_filsys fs = ctx->fs;
104 int inodes, inodes_used, blocks, blocks_used;
105 int dir_links;
106 int num_files, num_links;
107 int frag_percent;
108
109 dir_links = 2 * ctx->fs_directory_count - 1;
110 num_files = ctx->fs_total_count - dir_links;
111 num_links = ctx->fs_links_count - dir_links;
112 inodes = fs->super->s_inodes_count;
113 inodes_used = (fs->super->s_inodes_count -
114 fs->super->s_free_inodes_count);
115 blocks = fs->super->s_blocks_count;
116 blocks_used = (fs->super->s_blocks_count -
117 fs->super->s_free_blocks_count);
118
119 frag_percent = (10000 * ctx->fs_fragmented) / inodes_used;
120 frag_percent = (frag_percent + 5) / 10;
121
122 if (!verbose) {
123 printf("%s: %d/%d files (%0d.%d%% non-contiguous), %d/%d blocks\n",
124 ctx->device_name, inodes_used, inodes,
125 frag_percent / 10, frag_percent % 10,
126 blocks_used, blocks);
127 return;
128 }
129 printf (P_("\n%8d inode used (%d%%)\n", "\n%8d inodes used (%d%%)\n",
130 inodes_used), inodes_used, 100 * inodes_used / inodes);
131 printf (P_("%8d non-contiguous inode (%0d.%d%%)\n",
132 "%8d non-contiguous inodes (%0d.%d%%)\n",
133 ctx->fs_fragmented),
134 ctx->fs_fragmented, frag_percent / 10, frag_percent % 10);
135 printf (_(" # of inodes with ind/dind/tind blocks: %d/%d/%d\n"),
136 ctx->fs_ind_count, ctx->fs_dind_count, ctx->fs_tind_count);
137 printf (P_("%8d block used (%d%%)\n", "%8d blocks used (%d%%)\n",
138 blocks_used),
139 blocks_used, (int) ((long long) 100 * blocks_used / blocks));
140 printf (P_("%8d bad block\n", "%8d bad blocks\n",
141 ctx->fs_badblocks_count), ctx->fs_badblocks_count);
142 printf (P_("%8d large file\n", "%8d large files\n",
143 ctx->large_files), ctx->large_files);
144 printf (P_("\n%8d regular file\n", "\n%8d regular files\n",
145 ctx->fs_regular_count), ctx->fs_regular_count);
146 printf (P_("%8d directory\n", "%8d directories\n",
147 ctx->fs_directory_count), ctx->fs_directory_count);
148 printf (P_("%8d character device file\n",
149 "%8d character device files\n", ctx->fs_chardev_count),
150 ctx->fs_chardev_count);
151 printf (P_("%8d block device file\n", "%8d block device files\n",
152 ctx->fs_blockdev_count), ctx->fs_blockdev_count);
153 printf (P_("%8d fifo\n", "%8d fifos\n", ctx->fs_fifo_count),
154 ctx->fs_fifo_count);
155 printf (P_("%8d link\n", "%8d links\n",
156 ctx->fs_links_count - dir_links),
157 ctx->fs_links_count - dir_links);
158 printf (P_("%8d symbolic link", "%8d symbolic links",
159 ctx->fs_symlinks_count), ctx->fs_symlinks_count);
160 printf (P_(" (%d fast symbolic link)\n", " (%d fast symbolic links)\n",
161 ctx->fs_fast_symlinks_count), ctx->fs_fast_symlinks_count);
162 printf (P_("%8d socket\n", "%8d sockets\n", ctx->fs_sockets_count),
163 ctx->fs_sockets_count);
164 printf ("--------\n");
165 printf (P_("%8d file\n", "%8d files\n",
166 ctx->fs_total_count - dir_links),
167 ctx->fs_total_count - dir_links);
168}
169
170static void check_mount(e2fsck_t ctx)
171{
172 errcode_t retval;
173 int cont;
174
175 retval = ext2fs_check_if_mounted(ctx->filesystem_name,
176 &ctx->mount_flags);
177 if (retval) {
178 com_err("ext2fs_check_if_mount", retval,
179 _("while determining whether %s is mounted."),
180 ctx->filesystem_name);
181 return;
182 }
183
184 /*
185 * If the filesystem isn't mounted, or it's the root filesystem
186 * and it's mounted read-only, then everything's fine.
187 */
188 if ((!(ctx->mount_flags & EXT2_MF_MOUNTED)) ||
189 ((ctx->mount_flags & EXT2_MF_ISROOT) &&
190 (ctx->mount_flags & EXT2_MF_READONLY)))
191 return;
192
193 if (ctx->options & E2F_OPT_READONLY) {
194 printf(_("Warning! %s is mounted.\n"), ctx->filesystem_name);
195 return;
196 }
197
198 printf(_("%s is mounted. "), ctx->filesystem_name);
199 if (!ctx->interactive)
200 fatal_error(ctx, _("Cannot continue, aborting.\n\n"));
201 printf(_("\n\n\007\007\007\007WARNING!!! "
202 "Running e2fsck on a mounted filesystem may cause\n"
203 "SEVERE filesystem damage.\007\007\007\n\n"));
204 cont = ask_yn(_("Do you really want to continue"), -1);
205 if (!cont) {
206 printf (_("check aborted.\n"));
207 exit (0);
208 }
209 return;
210}
211
212static int is_on_batt(void)
213{
214 FILE *f;
215 DIR *d;
216 char tmp[80], tmp2[80], fname[80];
217 unsigned int acflag;
218 struct dirent* de;
219
220 f = fopen("/proc/apm", "r");
221 if (f) {
222 if (fscanf(f, "%s %s %s %x", tmp, tmp, tmp, &acflag) != 4)
223 acflag = 1;
224 fclose(f);
225 return (acflag != 1);
226 }
227 d = opendir("/proc/acpi/ac_adapter");
228 if (d) {
229 while ((de=readdir(d)) != NULL) {
230 if (!strncmp(".", de->d_name, 1))
231 continue;
232 snprintf(fname, 80, "/proc/acpi/ac_adapter/%s/state",
233 de->d_name);
234 f = fopen(fname, "r");
235 if (!f)
236 continue;
237 if (fscanf(f, "%s %s", tmp2, tmp) != 2)
238 tmp[0] = 0;
239 fclose(f);
240 if (strncmp(tmp, "off-line", 8) == 0) {
241 closedir(d);
242 return 1;
243 }
244 }
245 closedir(d);
246 }
247 return 0;
248}
249
250/*
251 * This routine checks to see if a filesystem can be skipped; if so,
252 * it will exit with E2FSCK_OK. Under some conditions it will print a
253 * message explaining why a check is being forced.
254 */
255static void check_if_skip(e2fsck_t ctx)
256{
257 ext2_filsys fs = ctx->fs;
258 const char *reason = NULL;
259 unsigned int reason_arg = 0;
260 long next_check;
261 int batt = is_on_batt();
262 time_t now = time(0);
263
264 if ((ctx->options & E2F_OPT_FORCE) || bad_blocks_file ||
265 cflag || swapfs)
266 return;
267
268 if ((fs->super->s_state & EXT2_ERROR_FS) ||
269 !ext2fs_test_valid(fs))
270 reason = _(" contains a file system with errors");
271 else if ((fs->super->s_state & EXT2_VALID_FS) == 0)
272 reason = _(" was not cleanly unmounted");
273 else if ((fs->super->s_max_mnt_count > 0) &&
274 (fs->super->s_mnt_count >=
275 (unsigned) fs->super->s_max_mnt_count)) {
276 reason = _(" has been mounted %u times without being checked");
277 reason_arg = fs->super->s_mnt_count;
278 if (batt && (fs->super->s_mnt_count <
279 (unsigned) fs->super->s_max_mnt_count*2))
280 reason = 0;
281 } else if (fs->super->s_checkinterval &&
282 ((now - fs->super->s_lastcheck) >=
283 fs->super->s_checkinterval)) {
284 reason = _(" has gone %u days without being checked");
285 reason_arg = (now - fs->super->s_lastcheck)/(3600*24);
286 if (batt && ((now - fs->super->s_lastcheck) <
287 fs->super->s_checkinterval*2))
288 reason = 0;
289 }
290 if (reason) {
291 fputs(ctx->device_name, stdout);
292 printf(reason, reason_arg);
293 fputs(_(", check forced.\n"), stdout);
294 return;
295 }
296 printf(_("%s: clean, %d/%d files, %d/%d blocks"), ctx->device_name,
297 fs->super->s_inodes_count - fs->super->s_free_inodes_count,
298 fs->super->s_inodes_count,
299 fs->super->s_blocks_count - fs->super->s_free_blocks_count,
300 fs->super->s_blocks_count);
301 next_check = 100000;
302 if (fs->super->s_max_mnt_count > 0) {
303 next_check = fs->super->s_max_mnt_count - fs->super->s_mnt_count;
304 if (next_check <= 0)
305 next_check = 1;
306 }
307 if (fs->super->s_checkinterval &&
308 ((now - fs->super->s_lastcheck) >= fs->super->s_checkinterval))
309 next_check = 1;
310 if (next_check <= 5) {
311 if (next_check == 1)
312 fputs(_(" (check after next mount)"), stdout);
313 else
314 printf(_(" (check in %ld mounts)"), next_check);
315 }
316 fputc('\n', stdout);
317 ext2fs_close(fs);
318 ctx->fs = NULL;
319 e2fsck_free_context(ctx);
320 exit(FSCK_OK);
321}
322
323/*
324 * For completion notice
325 */
326struct percent_tbl {
327 int max_pass;
328 int table[32];
329};
330struct percent_tbl e2fsck_tbl = {
331 5, { 0, 70, 90, 92, 95, 100 }
332};
333static char bar[128], spaces[128];
334
335static float calc_percent(struct percent_tbl *tbl, int pass, int curr,
336 int max)
337{
338 float percent;
339
340 if (pass <= 0)
341 return 0.0;
342 if (pass > tbl->max_pass || max == 0)
343 return 100.0;
344 percent = ((float) curr) / ((float) max);
345 return ((percent * (tbl->table[pass] - tbl->table[pass-1]))
346 + tbl->table[pass-1]);
347}
348
349extern void e2fsck_clear_progbar(e2fsck_t ctx)
350{
351 if (!(ctx->flags & E2F_FLAG_PROG_BAR))
352 return;
353
354 printf("%s%s\r%s", ctx->start_meta, spaces + (sizeof(spaces) - 80),
355 ctx->stop_meta);
356 fflush(stdout);
357 ctx->flags &= ~E2F_FLAG_PROG_BAR;
358}
359
360int e2fsck_simple_progress(e2fsck_t ctx, const char *label, float percent,
361 unsigned int dpynum)
362{
363 static const char spinner[] = "\\|/-";
364 int i;
365 unsigned int tick;
366 struct timeval tv;
367 int dpywidth;
368 int fixed_percent;
369
370 if (ctx->flags & E2F_FLAG_PROG_SUPPRESS)
371 return 0;
372
373 /*
374 * Calculate the new progress position. If the
375 * percentage hasn't changed, then we skip out right
376 * away.
377 */
378 fixed_percent = (int) ((10 * percent) + 0.5);
379 if (ctx->progress_last_percent == fixed_percent)
380 return 0;
381 ctx->progress_last_percent = fixed_percent;
382
383 /*
384 * If we've already updated the spinner once within
385 * the last 1/8th of a second, no point doing it
386 * again.
387 */
388 gettimeofday(&tv, NULL);
389 tick = (tv.tv_sec << 3) + (tv.tv_usec / (1000000 / 8));
390 if ((tick == ctx->progress_last_time) &&
391 (fixed_percent != 0) && (fixed_percent != 1000))
392 return 0;
393 ctx->progress_last_time = tick;
394
395 /*
396 * Advance the spinner, and note that the progress bar
397 * will be on the screen
398 */
399 ctx->progress_pos = (ctx->progress_pos+1) & 3;
400 ctx->flags |= E2F_FLAG_PROG_BAR;
401
402 dpywidth = 66 - strlen(label);
403 dpywidth = 8 * (dpywidth / 8);
404 if (dpynum)
405 dpywidth -= 8;
406
407 i = ((percent * dpywidth) + 50) / 100;
408 printf("%s%s: |%s%s", ctx->start_meta, label,
409 bar + (sizeof(bar) - (i+1)),
410 spaces + (sizeof(spaces) - (dpywidth - i + 1)));
411 if (fixed_percent == 1000)
412 fputc('|', stdout);
413 else
414 fputc(spinner[ctx->progress_pos & 3], stdout);
415 printf(" %4.1f%% ", percent);
416 if (dpynum)
417 printf("%u\r", dpynum);
418 else
419 fputs(" \r", stdout);
420 fputs(ctx->stop_meta, stdout);
421
422 if (fixed_percent == 1000)
423 e2fsck_clear_progbar(ctx);
424 fflush(stdout);
425
426 return 0;
427}
428
429static int e2fsck_update_progress(e2fsck_t ctx, int pass,
430 unsigned long cur, unsigned long max)
431{
432 char buf[80];
433 float percent;
434
435 if (pass == 0)
436 return 0;
437
438 if (ctx->progress_fd) {
439 sprintf(buf, "%d %lu %lu\n", pass, cur, max);
440 write(ctx->progress_fd, buf, strlen(buf));
441 } else {
442 percent = calc_percent(&e2fsck_tbl, pass, cur, max);
443 e2fsck_simple_progress(ctx, ctx->device_name,
444 percent, 0);
445 }
446 return 0;
447}
448
449#define PATH_SET "PATH=/sbin"
450
451static void reserve_stdio_fds(void)
452{
453 int fd;
454
455 while (1) {
456 fd = open("/dev/null", O_RDWR);
457 if (fd > 2)
458 break;
459 if (fd < 0) {
460 fprintf(stderr, _("ERROR: Couldn't open "
461 "/dev/null (%s)\n"),
462 strerror(errno));
463 break;
464 }
465 }
466 close(fd);
467}
468
469#ifdef HAVE_SIGNAL_H
470static void signal_progress_on(int sig EXT2FS_ATTR((unused)))
471{
472 e2fsck_t ctx = e2fsck_global_ctx;
473
474 if (!ctx)
475 return;
476
477 ctx->progress = e2fsck_update_progress;
478 ctx->progress_fd = 0;
479}
480
481static void signal_progress_off(int sig EXT2FS_ATTR((unused)))
482{
483 e2fsck_t ctx = e2fsck_global_ctx;
484
485 if (!ctx)
486 return;
487
488 e2fsck_clear_progbar(ctx);
489 ctx->progress = 0;
490}
491
492static void signal_cancel(int sig EXT2FS_ATTR((unused)))
493{
494 e2fsck_t ctx = e2fsck_global_ctx;
495
496 if (!ctx)
497 exit(FSCK_CANCELED);
498
499 ctx->flags |= E2F_FLAG_CANCEL;
500}
501#endif
502
503static void parse_extended_opts(e2fsck_t ctx, const char *opts)
504{
505 char *buf, *token, *next, *p, *arg;
506 int ea_ver;
507 int extended_usage = 0;
508
509 buf = string_copy(ctx, opts, 0);
510 for (token = buf; token && *token; token = next) {
511 p = strchr(token, ',');
512 next = 0;
513 if (p) {
514 *p = 0;
515 next = p+1;
516 }
517 arg = strchr(token, '=');
518 if (arg) {
519 *arg = 0;
520 arg++;
521 }
522 if (strcmp(token, "ea_ver") == 0) {
523 if (!arg) {
524 extended_usage++;
525 continue;
526 }
527 ea_ver = strtoul(arg, &p, 0);
528 if (*p ||
529 ((ea_ver != 1) && (ea_ver != 2))) {
530 fprintf(stderr,
531 _("Invalid EA version.\n"));
532 extended_usage++;
533 continue;
534 }
535 ctx->ext_attr_ver = ea_ver;
536 } else
537 extended_usage++;
538 }
539 if (extended_usage) {
540 fprintf(stderr, _("Extended options are separated by commas, "
541 "and may take an argument which\n"
542 "is set off by an equals ('=') sign. "
543 "Valid raid options are:\n"
544 "\tea_ver=<ea_version (1 or 2)\n\n"));
545 exit(1);
546 }
547}
548
549
550static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx)
551{
552 int flush = 0;
553 int c, fd;
554#ifdef MTRACE
555 extern void *mallwatch;
556#endif
557 e2fsck_t ctx;
558 errcode_t retval;
559#ifdef HAVE_SIGNAL_H
560 struct sigaction sa;
561#endif
562 char *extended_opts = 0;
563
564 retval = e2fsck_allocate_context(&ctx);
565 if (retval)
566 return retval;
567
568 *ret_ctx = ctx;
569
570 setvbuf(stdout, NULL, _IONBF, BUFSIZ);
571 setvbuf(stderr, NULL, _IONBF, BUFSIZ);
572 if (isatty(0) && isatty(1)) {
573 ctx->interactive = 1;
574 } else {
575 ctx->start_meta[0] = '\001';
576 ctx->stop_meta[0] = '\002';
577 }
578 memset(bar, '=', sizeof(bar)-1);
579 memset(spaces, ' ', sizeof(spaces)-1);
580 blkid_get_cache(&ctx->blkid, NULL);
581
582 if (argc && *argv)
583 ctx->program_name = *argv;
584 else
585 ctx->program_name = "e2fsck";
586 while ((c = getopt (argc, argv, "panyrcC:B:dE:fvtFVM:b:I:j:P:l:L:N:SsDk")) != EOF)
587 switch (c) {
588 case 'C':
589 ctx->progress = e2fsck_update_progress;
590 ctx->progress_fd = atoi(optarg);
591 if (!ctx->progress_fd)
592 break;
593 /* Validate the file descriptor to avoid disasters */
594 fd = dup(ctx->progress_fd);
595 if (fd < 0) {
596 fprintf(stderr,
597 _("Error validating file descriptor %d: %s\n"),
598 ctx->progress_fd,
599 error_message(errno));
600 fatal_error(ctx,
601 _("Invalid completion information file descriptor"));
602 } else
603 close(fd);
604 break;
605 case 'D':
606 ctx->options |= E2F_OPT_COMPRESS_DIRS;
607 break;
608 case 'E':
609 extended_opts = optarg;
610 break;
611 case 'p':
612 case 'a':
613 if (ctx->options & (E2F_OPT_YES|E2F_OPT_NO)) {
614 conflict_opt:
615 fatal_error(ctx,
616 _("Only one the options -p/-a, -n or -y may be specified."));
617 }
618 ctx->options |= E2F_OPT_PREEN;
619 break;
620 case 'n':
621 if (ctx->options & (E2F_OPT_YES|E2F_OPT_PREEN))
622 goto conflict_opt;
623 ctx->options |= E2F_OPT_NO;
624 break;
625 case 'y':
626 if (ctx->options & (E2F_OPT_PREEN|E2F_OPT_NO))
627 goto conflict_opt;
628 ctx->options |= E2F_OPT_YES;
629 break;
630 case 't':
631#ifdef RESOURCE_TRACK
632 if (ctx->options & E2F_OPT_TIME)
633 ctx->options |= E2F_OPT_TIME2;
634 else
635 ctx->options |= E2F_OPT_TIME;
636#else
637 fprintf(stderr, _("The -t option is not "
638 "supported on this version of e2fsck.\n"));
639#endif
640 break;
641 case 'c':
642 if (cflag++)
643 ctx->options |= E2F_OPT_WRITECHECK;
644 ctx->options |= E2F_OPT_CHECKBLOCKS;
645 break;
646 case 'r':
647 /* What we do by default, anyway! */
648 break;
649 case 'b':
650 ctx->use_superblock = atoi(optarg);
651 ctx->flags |= E2F_FLAG_SB_SPECIFIED;
652 break;
653 case 'B':
654 ctx->blocksize = atoi(optarg);
655 break;
656 case 'I':
657 ctx->inode_buffer_blocks = atoi(optarg);
658 break;
659 case 'j':
660 ctx->journal_name = string_copy(ctx, optarg, 0);
661 break;
662 case 'P':
663 ctx->process_inode_size = atoi(optarg);
664 break;
665 case 'L':
666 replace_bad_blocks++;
667 case 'l':
668 bad_blocks_file = string_copy(ctx, optarg, 0);
669 break;
670 case 'd':
671 ctx->options |= E2F_OPT_DEBUG;
672 break;
673 case 'f':
674 ctx->options |= E2F_OPT_FORCE;
675 break;
676 case 'F':
677 flush = 1;
678 break;
679 case 'v':
680 verbose = 1;
681 break;
682 case 'V':
683 show_version_only = 1;
684 break;
685#ifdef MTRACE
686 case 'M':
687 mallwatch = (void *) strtol(optarg, NULL, 0);
688 break;
689#endif
690 case 'N':
691 ctx->device_name = optarg;
692 break;
693#ifdef ENABLE_SWAPFS
694 case 's':
695 normalize_swapfs = 1;
696 case 'S':
697 swapfs = 1;
698 break;
699#else
700 case 's':
701 case 'S':
702 fprintf(stderr, _("Byte-swapping filesystems "
703 "not compiled in this version "
704 "of e2fsck\n"));
705 exit(1);
706#endif
707 case 'k':
708 keep_bad_blocks++;
709 break;
710 default:
711 usage();
712 }
713 if (show_version_only)
714 return 0;
715 if (optind != argc - 1)
716 usage();
717 if ((ctx->options & E2F_OPT_NO) && !bad_blocks_file &&
718 !cflag && !swapfs && !(ctx->options & E2F_OPT_COMPRESS_DIRS))
719 ctx->options |= E2F_OPT_READONLY;
720 ctx->io_options = strchr(argv[optind], '?');
721 if (ctx->io_options)
722 *ctx->io_options++ = 0;
723 ctx->filesystem_name = blkid_get_devname(ctx->blkid, argv[optind], 0);
724 if (!ctx->filesystem_name) {
725 com_err(ctx->program_name, 0, _("Unable to resolve '%s'"),
726 argv[optind]);
727 fatal_error(ctx, 0);
728 }
729 if (extended_opts)
730 parse_extended_opts(ctx, extended_opts);
731
732 if (flush) {
733 fd = open(ctx->filesystem_name, O_RDONLY, 0);
734 if (fd < 0) {
735 com_err("open", errno,
736 _("while opening %s for flushing"),
737 ctx->filesystem_name);
738 fatal_error(ctx, 0);
739 }
740 if ((retval = ext2fs_sync_device(fd, 1))) {
741 com_err("ext2fs_sync_device", retval,
742 _("while trying to flush %s"),
743 ctx->filesystem_name);
744 fatal_error(ctx, 0);
745 }
746 close(fd);
747 }
748#ifdef ENABLE_SWAPFS
749 if (swapfs) {
750 if (cflag || bad_blocks_file) {
751 fprintf(stderr, _("Incompatible options not "
752 "allowed when byte-swapping.\n"));
753 exit(FSCK_USAGE);
754 }
755 }
756#endif
757 if (cflag && bad_blocks_file) {
758 fprintf(stderr, _("The -c and the -l/-L options may "
759 "not be both used at the same time.\n"));
760 exit(FSCK_USAGE);
761 }
762#ifdef HAVE_SIGNAL_H
763 /*
764 * Set up signal action
765 */
766 memset(&sa, 0, sizeof(struct sigaction));
767 sa.sa_handler = signal_cancel;
768 sigaction(SIGINT, &sa, 0);
769 sigaction(SIGTERM, &sa, 0);
770#ifdef SA_RESTART
771 sa.sa_flags = SA_RESTART;
772#endif
773 e2fsck_global_ctx = ctx;
774 sa.sa_handler = signal_progress_on;
775 sigaction(SIGUSR1, &sa, 0);
776 sa.sa_handler = signal_progress_off;
777 sigaction(SIGUSR2, &sa, 0);
778#endif
779
780 /* Update our PATH to include /sbin if we need to run badblocks */
781 if (cflag) {
782 char *oldpath = getenv("PATH");
783 if (oldpath) {
784 char *newpath;
785
786 newpath = (char *) malloc(sizeof (PATH_SET) + 1 +
787 strlen (oldpath));
788 if (!newpath)
789 fatal_error(ctx, "Couldn't malloc() newpath");
790 strcpy (newpath, PATH_SET);
791 strcat (newpath, ":");
792 strcat (newpath, oldpath);
793 putenv (newpath);
794 } else
795 putenv (PATH_SET);
796 }
797#ifdef __CONFIG_JBD_DEBUG__E2FS
798 if (getenv("E2FSCK_JBD_DEBUG"))
799 journal_enable_debug = atoi(getenv("E2FSCK_JBD_DEBUG"));
800#endif
801 return 0;
802}
803
804static const char *my_ver_string = E2FSPROGS_VERSION;
805static const char *my_ver_date = E2FSPROGS_DATE;
806
807int e2fsck_main (int argc, char *argv[])
808{
809 errcode_t retval = 0;
810 int exit_value = FSCK_OK;
811 ext2_filsys fs = 0;
812 io_manager io_ptr;
813 struct ext2_super_block *sb;
814 const char *lib_ver_date;
815 int my_ver, lib_ver;
816 e2fsck_t ctx;
817 struct problem_context pctx;
818 int flags, run_result;
819
820 clear_problem_context(&pctx);
821#ifdef MTRACE
822 mtrace();
823#endif
824#ifdef MCHECK
825 mcheck(0);
826#endif
827#ifdef ENABLE_NLS
828 setlocale(LC_MESSAGES, "");
829 setlocale(LC_CTYPE, "");
830 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
831 textdomain(NLS_CAT_NAME);
832#endif
833 my_ver = ext2fs_parse_version_string(my_ver_string);
834 lib_ver = ext2fs_get_library_version(0, &lib_ver_date);
835 if (my_ver > lib_ver) {
836 fprintf( stderr, _("Error: ext2fs library version "
837 "out of date!\n"));
838 show_version_only++;
839 }
840
841 retval = PRS(argc, argv, &ctx);
842 if (retval) {
843 com_err("e2fsck", retval,
844 _("while trying to initialize program"));
845 exit(FSCK_ERROR);
846 }
847 reserve_stdio_fds();
848
849#ifdef RESOURCE_TRACK
850 init_resource_track(&ctx->global_rtrack);
851#endif
852
853 if (!(ctx->options & E2F_OPT_PREEN) || show_version_only)
854 fprintf(stderr, "e2fsck %s (%s)\n", my_ver_string,
855 my_ver_date);
856
857 if (show_version_only) {
858 fprintf(stderr, _("\tUsing %s, %s\n"),
859 error_message(EXT2_ET_BASE), lib_ver_date);
860 exit(FSCK_OK);
861 }
862
863 check_mount(ctx);
864
865 if (!(ctx->options & E2F_OPT_PREEN) &&
866 !(ctx->options & E2F_OPT_NO) &&
867 !(ctx->options & E2F_OPT_YES)) {
868 if (!ctx->interactive)
869 fatal_error(ctx,
870 _("need terminal for interactive repairs"));
871 }
872 ctx->superblock = ctx->use_superblock;
873restart:
874#ifdef CONFIG_TESTIO_DEBUG
875 io_ptr = test_io_manager;
876 test_io_backing_manager = unix_io_manager;
877#else
878 io_ptr = unix_io_manager;
879#endif
880 flags = 0;
881 if ((ctx->options & E2F_OPT_READONLY) == 0)
882 flags |= EXT2_FLAG_RW;
883
884 if (ctx->superblock && ctx->blocksize) {
885 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
886 flags, ctx->superblock, ctx->blocksize,
887 io_ptr, &fs);
888 } else if (ctx->superblock) {
889 int blocksize;
890 for (blocksize = EXT2_MIN_BLOCK_SIZE;
891 blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) {
892 retval = ext2fs_open2(ctx->filesystem_name,
893 ctx->io_options, flags,
894 ctx->superblock, blocksize,
895 io_ptr, &fs);
896 if (!retval)
897 break;
898 }
899 } else
900 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
901 flags, 0, 0, io_ptr, &fs);
902 if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) &&
903 !(ctx->flags & E2F_FLAG_SB_SPECIFIED) &&
904 ((retval == EXT2_ET_BAD_MAGIC) ||
905 ((retval == 0) && ext2fs_check_desc(fs)))) {
906 if (!fs || (fs->group_desc_count > 1)) {
907 printf(_("%s trying backup blocks...\n"),
908 retval ? _("Couldn't find ext2 superblock,") :
909 _("Group descriptors look bad..."));
910 get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr);
911 if (fs)
912 ext2fs_close(fs);
913 goto restart;
914 }
915 }
916 if (retval) {
917 com_err(ctx->program_name, retval, _("while trying to open %s"),
918 ctx->filesystem_name);
919 if (retval == EXT2_ET_REV_TOO_HIGH) {
920 printf(_("The filesystem revision is apparently "
921 "too high for this version of e2fsck.\n"
922 "(Or the filesystem superblock "
923 "is corrupt)\n\n"));
924 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
925 } else if (retval == EXT2_ET_SHORT_READ)
926 printf(_("Could this be a zero-length partition?\n"));
927 else if ((retval == EPERM) || (retval == EACCES))
928 printf(_("You must have %s access to the "
929 "filesystem or be root\n"),
930 (ctx->options & E2F_OPT_READONLY) ?
931 "r/o" : "r/w");
932 else if (retval == ENXIO)
933 printf(_("Possibly non-existent or swap device?\n"));
934#ifdef EROFS
935 else if (retval == EROFS)
936 printf(_("Disk write-protected; use the -n option "
937 "to do a read-only\n"
938 "check of the device.\n"));
939#endif
940 else
941 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
942 fatal_error(ctx, 0);
943 }
944 ctx->fs = fs;
945 fs->priv_data = ctx;
946 sb = fs->super;
947 if (sb->s_rev_level > E2FSCK_CURRENT_REV) {
948 com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH,
949 _("while trying to open %s"),
950 ctx->filesystem_name);
951 get_newer:
952 fatal_error(ctx, _("Get a newer version of e2fsck!"));
953 }
954
955 /*
956 * Set the device name, which is used whenever we print error
957 * or informational messages to the user.
958 */
959 if (ctx->device_name == 0 &&
960 (sb->s_volume_name[0] != 0)) {
961 ctx->device_name = string_copy(ctx, sb->s_volume_name,
962 sizeof(sb->s_volume_name));
963 }
964 if (ctx->device_name == 0)
965 ctx->device_name = ctx->filesystem_name;
966
967 /*
968 * Make sure the ext3 superblock fields are consistent.
969 */
970 retval = e2fsck_check_ext3_journal(ctx);
971 if (retval) {
972 com_err(ctx->program_name, retval,
973 _("while checking ext3 journal for %s"),
974 ctx->device_name);
975 fatal_error(ctx, 0);
976 }
977
978 /*
979 * Check to see if we need to do ext3-style recovery. If so,
980 * do it, and then restart the fsck.
981 */
982 if (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) {
983 if (ctx->options & E2F_OPT_READONLY) {
984 printf(_("Warning: skipping journal recovery "
985 "because doing a read-only filesystem "
986 "check.\n"));
987 io_channel_flush(ctx->fs->io);
988 } else {
989 if (ctx->flags & E2F_FLAG_RESTARTED) {
990 /*
991 * Whoops, we attempted to run the
992 * journal twice. This should never
993 * happen, unless the hardware or
994 * device driver is being bogus.
995 */
996 com_err(ctx->program_name, 0,
997 _("unable to set superblock flags on %s\n"), ctx->device_name);
998 fatal_error(ctx, 0);
999 }
1000 retval = e2fsck_run_ext3_journal(ctx);
1001 if (retval) {
1002 com_err(ctx->program_name, retval,
1003 _("while recovering ext3 journal of %s"),
1004 ctx->device_name);
1005 fatal_error(ctx, 0);
1006 }
1007 ext2fs_close(ctx->fs);
1008 ctx->fs = 0;
1009 ctx->flags |= E2F_FLAG_RESTARTED;
1010 goto restart;
1011 }
1012 }
1013
1014 /*
1015 * Check for compatibility with the feature sets. We need to
1016 * be more stringent than ext2fs_open().
1017 */
1018 if ((sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP) ||
1019 (sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP)) {
1020 com_err(ctx->program_name, EXT2_ET_UNSUPP_FEATURE,
1021 "(%s)", ctx->device_name);
1022 goto get_newer;
1023 }
1024 if (sb->s_feature_ro_compat & ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP) {
1025 com_err(ctx->program_name, EXT2_ET_RO_UNSUPP_FEATURE,
1026 "(%s)", ctx->device_name);
1027 goto get_newer;
1028 }
1029#ifdef ENABLE_COMPRESSION
1030 if (sb->s_feature_incompat & EXT2_FEATURE_INCOMPAT_COMPRESSION)
1031 com_err(ctx->program_name, 0,
1032 _("Warning: compression support is experimental.\n"));
1033#endif
1034#ifndef ENABLE_HTREE
1035 if (sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) {
1036 com_err(ctx->program_name, 0,
1037 _("E2fsck not compiled with HTREE support,\n\t"
1038 "but filesystem %s has HTREE directories.\n"),
1039 ctx->device_name);
1040 goto get_newer;
1041 }
1042#endif
1043
1044 /*
1045 * If the user specified a specific superblock, presumably the
1046 * master superblock has been trashed. So we mark the
1047 * superblock as dirty, so it can be written out.
1048 */
1049 if (ctx->superblock &&
1050 !(ctx->options & E2F_OPT_READONLY))
1051 ext2fs_mark_super_dirty(fs);
1052
1053 /*
1054 * We only update the master superblock because (a) paranoia;
1055 * we don't want to corrupt the backup superblocks, and (b) we
1056 * don't need to update the mount count and last checked
1057 * fields in the backup superblock (the kernel doesn't
1058 * update the backup superblocks anyway).
1059 */
1060 fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
1061
1062 ehandler_init(fs->io);
1063
1064 if (ctx->superblock)
1065 set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0);
1066 ext2fs_mark_valid(fs);
1067 check_super_block(ctx);
1068 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1069 fatal_error(ctx, 0);
1070 check_if_skip(ctx);
1071 if (bad_blocks_file)
1072 read_bad_blocks_file(ctx, bad_blocks_file, replace_bad_blocks);
1073 else if (cflag)
1074 read_bad_blocks_file(ctx, 0, !keep_bad_blocks); /* Test disk */
1075 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1076 fatal_error(ctx, 0);
1077#ifdef ENABLE_SWAPFS
1078 if (normalize_swapfs) {
1079 if ((fs->flags & EXT2_FLAG_SWAP_BYTES) ==
1080 ext2fs_native_flag()) {
1081 fprintf(stderr, _("%s: Filesystem byte order "
1082 "already normalized.\n"), ctx->device_name);
1083 fatal_error(ctx, 0);
1084 }
1085 }
1086 if (swapfs) {
1087 swap_filesys(ctx);
1088 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1089 fatal_error(ctx, 0);
1090 }
1091#endif
1092
1093 /*
1094 * Mark the system as valid, 'til proven otherwise
1095 */
1096 ext2fs_mark_valid(fs);
1097
1098 retval = ext2fs_read_bb_inode(fs, &fs->badblocks);
1099 if (retval) {
1100 com_err(ctx->program_name, retval,
1101 _("while reading bad blocks inode"));
1102 preenhalt(ctx);
1103 printf(_("This doesn't bode well,"
1104 " but we'll try to go on...\n"));
1105 }
1106
1107 run_result = e2fsck_run(ctx);
1108 e2fsck_clear_progbar(ctx);
1109 if (run_result == E2F_FLAG_RESTART) {
1110 printf(_("Restarting e2fsck from the beginning...\n"));
1111 retval = e2fsck_reset_context(ctx);
1112 if (retval) {
1113 com_err(ctx->program_name, retval,
1114 _("while resetting context"));
1115 fatal_error(ctx, 0);
1116 }
1117 ext2fs_close(fs);
1118 goto restart;
1119 }
1120 if (run_result & E2F_FLAG_CANCEL) {
1121 printf(_("%s: e2fsck canceled.\n"), ctx->device_name ?
1122 ctx->device_name : ctx->filesystem_name);
1123 exit_value |= FSCK_CANCELED;
1124 }
1125 if (run_result & E2F_FLAG_ABORT)
1126 fatal_error(ctx, _("aborted"));
1127
1128#ifdef MTRACE
1129 mtrace_print("Cleanup");
1130#endif
1131 if (ext2fs_test_changed(fs)) {
1132 exit_value |= FSCK_NONDESTRUCT;
1133 if (!(ctx->options & E2F_OPT_PREEN))
1134 printf(_("\n%s: ***** FILE SYSTEM WAS MODIFIED *****\n"),
1135 ctx->device_name);
1136 if (ctx->mount_flags & EXT2_MF_ISROOT) {
1137 printf(_("%s: ***** REBOOT LINUX *****\n"),
1138 ctx->device_name);
1139 exit_value |= FSCK_REBOOT;
1140 }
1141 }
1142 if (!ext2fs_test_valid(fs)) {
1143 printf(_("\n%s: ********** WARNING: Filesystem still has "
1144 "errors **********\n\n"), ctx->device_name);
1145 exit_value |= FSCK_UNCORRECTED;
1146 exit_value &= ~FSCK_NONDESTRUCT;
1147 }
1148 if (exit_value & FSCK_CANCELED)
1149 exit_value &= ~FSCK_NONDESTRUCT;
1150 else {
1151 show_stats(ctx);
1152 if (!(ctx->options & E2F_OPT_READONLY)) {
1153 if (ext2fs_test_valid(fs)) {
1154 if (!(sb->s_state & EXT2_VALID_FS))
1155 exit_value |= FSCK_NONDESTRUCT;
1156 sb->s_state = EXT2_VALID_FS;
1157 } else
1158 sb->s_state &= ~EXT2_VALID_FS;
1159 sb->s_mnt_count = 0;
1160 sb->s_lastcheck = time(NULL);
1161 ext2fs_mark_super_dirty(fs);
1162 }
1163 }
1164
1165 e2fsck_write_bitmaps(ctx);
1166
1167 ext2fs_close(fs);
1168 ctx->fs = NULL;
1169 free(ctx->filesystem_name);
1170 free(ctx->journal_name);
1171 e2fsck_free_context(ctx);
1172
1173#ifdef RESOURCE_TRACK
1174 if (ctx->options & E2F_OPT_TIME)
1175 print_resource_track(NULL, &ctx->global_rtrack);
1176#endif
1177
1178 return exit_value;
1179}
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-09-11 08:33:54 +0000