1 /*
2 * dumpe2fs.c - List the control structures of a second
3 * extended filesystem
4 *
5 * Copyright (C) 1992, 1993, 1994 Remy Card <card@masi.ibp.fr>
6 * Laboratoire MASI, Institut Blaise Pascal
7 * Universite Pierre et Marie Curie (Paris VI)
8 *
9 * Copyright 1995, 1996, 1997 by Theodore Ts'o.
10 *
11 * %Begin-Header%
12 * This file may be redistributed under the terms of the GNU Public
13 * License.
14 * %End-Header%
15 */
16
17 /*
18 * History:
19 * 94/01/09 - Creation
20 * 94/02/27 - Ported to use the ext2fs library
21 */
22
23 #include "config.h"
24 #ifdef HAVE_GETOPT_H
25 #include <getopt.h>
26 #else
27 extern char *optarg;
28 extern int optind;
29 #endif
30 #include <fcntl.h>
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <string.h>
34 #include <unistd.h>
35
36 #include "ext2fs/ext2_fs.h"
37
38 #include "ext2fs/ext2fs.h"
39 #include "e2p/e2p.h"
40 #include "ext2fs/kernel-jbd.h"
41 #include <uuid/uuid.h>
42
43 #include "support/nls-enable.h"
44 #include "support/plausible.h"
45 #include "../version.h"
46
47 #define in_use(m, x) (ext2fs_test_bit ((x), (m)))
48
49 static const char * program_name = "dumpe2fs";
50 static char * device_name = NULL;
51 static int hex_format = 0;
52 static int blocks64 = 0;
53
usage(void)54 static void usage(void)
55 {
56 fprintf(stderr, _("Usage: %s [-bfghimxV] [-o superblock=<num>] "
57 "[-o blocksize=<num>] device\n"), program_name);
58 exit(1);
59 }
60
print_number(unsigned long long num)61 static void print_number(unsigned long long num)
62 {
63 if (hex_format) {
64 if (blocks64)
65 printf("0x%08llx", num);
66 else
67 printf("0x%04llx", num);
68 } else
69 printf("%llu", num);
70 }
71
print_range(unsigned long long a,unsigned long long b)72 static void print_range(unsigned long long a, unsigned long long b)
73 {
74 if (hex_format) {
75 if (blocks64)
76 printf("0x%08llx-0x%08llx", a, b);
77 else
78 printf("0x%04llx-0x%04llx", a, b);
79 } else
80 printf("%llu-%llu", a, b);
81 }
82
print_free(unsigned long group,char * bitmap,unsigned long num,unsigned long offset,int ratio)83 static void print_free(unsigned long group, char * bitmap,
84 unsigned long num, unsigned long offset, int ratio)
85 {
86 int p = 0;
87 unsigned long i;
88 unsigned long j;
89
90 offset /= ratio;
91 offset += group * num;
92 for (i = 0; i < num; i++)
93 if (!in_use (bitmap, i))
94 {
95 if (p)
96 printf (", ");
97 print_number((i + offset) * ratio);
98 for (j = i; j < num && !in_use (bitmap, j); j++)
99 ;
100 if (--j != i) {
101 fputc('-', stdout);
102 print_number((j + offset) * ratio);
103 i = j;
104 }
105 p = 1;
106 }
107 }
108
print_bg_opt(int bg_flags,int mask,const char * str,int * first)109 static void print_bg_opt(int bg_flags, int mask,
110 const char *str, int *first)
111 {
112 if (bg_flags & mask) {
113 if (*first) {
114 fputs(" [", stdout);
115 *first = 0;
116 } else
117 fputs(", ", stdout);
118 fputs(str, stdout);
119 }
120 }
print_bg_opts(ext2_filsys fs,dgrp_t i)121 static void print_bg_opts(ext2_filsys fs, dgrp_t i)
122 {
123 int first = 1, bg_flags = 0;
124
125 if (ext2fs_has_group_desc_csum(fs))
126 bg_flags = ext2fs_bg_flags(fs, i);
127
128 print_bg_opt(bg_flags, EXT2_BG_INODE_UNINIT, "INODE_UNINIT",
129 &first);
130 print_bg_opt(bg_flags, EXT2_BG_BLOCK_UNINIT, "BLOCK_UNINIT",
131 &first);
132 print_bg_opt(bg_flags, EXT2_BG_INODE_ZEROED, "ITABLE_ZEROED",
133 &first);
134 if (!first)
135 fputc(']', stdout);
136 fputc('\n', stdout);
137 }
138
print_bg_rel_offset(ext2_filsys fs,blk64_t block,int itable,blk64_t first_block,blk64_t last_block)139 static void print_bg_rel_offset(ext2_filsys fs, blk64_t block, int itable,
140 blk64_t first_block, blk64_t last_block)
141 {
142 if ((block >= first_block) && (block <= last_block)) {
143 if (itable && block == first_block)
144 return;
145 printf(" (+%u)", (unsigned)(block - first_block));
146 } else if (ext2fs_has_feature_flex_bg(fs->super)) {
147 dgrp_t flex_grp = ext2fs_group_of_blk2(fs, block);
148 printf(" (bg #%u + %u)", flex_grp,
149 (unsigned)(block-ext2fs_group_first_block2(fs,flex_grp)));
150 }
151 }
152
list_desc(ext2_filsys fs,int grp_only)153 static void list_desc(ext2_filsys fs, int grp_only)
154 {
155 unsigned long i;
156 blk64_t first_block, last_block;
157 blk64_t super_blk, old_desc_blk, new_desc_blk;
158 char *block_bitmap=NULL, *inode_bitmap=NULL;
159 const char *units = _("blocks");
160 int inode_blocks_per_group, old_desc_blocks, reserved_gdt;
161 int block_nbytes, inode_nbytes;
162 int has_super;
163 blk64_t blk_itr = EXT2FS_B2C(fs, fs->super->s_first_data_block);
164 ext2_ino_t ino_itr = 1;
165 errcode_t retval;
166
167 if (ext2fs_has_feature_bigalloc(fs->super))
168 units = _("clusters");
169
170 block_nbytes = EXT2_CLUSTERS_PER_GROUP(fs->super) / 8;
171 inode_nbytes = EXT2_INODES_PER_GROUP(fs->super) / 8;
172
173 if (fs->block_map)
174 block_bitmap = malloc(block_nbytes);
175 if (fs->inode_map)
176 inode_bitmap = malloc(inode_nbytes);
177
178 inode_blocks_per_group = ((fs->super->s_inodes_per_group *
179 EXT2_INODE_SIZE(fs->super)) +
180 EXT2_BLOCK_SIZE(fs->super) - 1) /
181 EXT2_BLOCK_SIZE(fs->super);
182 reserved_gdt = fs->super->s_reserved_gdt_blocks;
183 fputc('\n', stdout);
184 first_block = fs->super->s_first_data_block;
185 if (ext2fs_has_feature_meta_bg(fs->super))
186 old_desc_blocks = fs->super->s_first_meta_bg;
187 else
188 old_desc_blocks = fs->desc_blocks;
189 if (grp_only)
190 printf("group:block:super:gdt:bbitmap:ibitmap:itable\n");
191 for (i = 0; i < fs->group_desc_count; i++) {
192 first_block = ext2fs_group_first_block2(fs, i);
193 last_block = ext2fs_group_last_block2(fs, i);
194
195 ext2fs_super_and_bgd_loc2(fs, i, &super_blk,
196 &old_desc_blk, &new_desc_blk, 0);
197
198 if (grp_only) {
199 printf("%lu:%llu:", i, (unsigned long long) first_block);
200 if (i == 0 || super_blk)
201 printf("%llu:", (unsigned long long) super_blk);
202 else
203 printf("-1:");
204 if (old_desc_blk) {
205 print_range(old_desc_blk,
206 old_desc_blk + old_desc_blocks - 1);
207 printf(":");
208 } else if (new_desc_blk)
209 printf("%llu:", (unsigned long long) new_desc_blk);
210 else
211 printf("-1:");
212 printf("%llu:%llu:%llu\n",
213 (unsigned long long) ext2fs_block_bitmap_loc(fs, i),
214 (unsigned long long) ext2fs_inode_bitmap_loc(fs, i),
215 (unsigned long long) ext2fs_inode_table_loc(fs, i));
216 continue;
217 }
218
219 printf(_("Group %lu: (Blocks "), i);
220 print_range(first_block, last_block);
221 fputs(")", stdout);
222 if (ext2fs_has_group_desc_csum(fs)) {
223 unsigned csum = ext2fs_bg_checksum(fs, i);
224 unsigned exp_csum = ext2fs_group_desc_csum(fs, i);
225
226 printf(_(" csum 0x%04x"), csum);
227 if (csum != exp_csum)
228 printf(_(" (EXPECTED 0x%04x)"), exp_csum);
229 }
230 print_bg_opts(fs, i);
231 has_super = ((i==0) || super_blk);
232 if (has_super) {
233 printf (_(" %s superblock at "),
234 i == 0 ? _("Primary") : _("Backup"));
235 print_number(super_blk);
236 }
237 if (old_desc_blk) {
238 printf("%s", _(", Group descriptors at "));
239 print_range(old_desc_blk,
240 old_desc_blk + old_desc_blocks - 1);
241 if (reserved_gdt) {
242 printf("%s", _("\n Reserved GDT blocks at "));
243 print_range(old_desc_blk + old_desc_blocks,
244 old_desc_blk + old_desc_blocks +
245 reserved_gdt - 1);
246 }
247 } else if (new_desc_blk) {
248 fputc(has_super ? ',' : ' ', stdout);
249 printf("%s", _(" Group descriptor at "));
250 print_number(new_desc_blk);
251 has_super++;
252 }
253 if (has_super)
254 fputc('\n', stdout);
255 fputs(_(" Block bitmap at "), stdout);
256 print_number(ext2fs_block_bitmap_loc(fs, i));
257 print_bg_rel_offset(fs, ext2fs_block_bitmap_loc(fs, i), 0,
258 first_block, last_block);
259 if (ext2fs_has_feature_metadata_csum(fs->super))
260 printf(_(", csum 0x%08x"),
261 ext2fs_block_bitmap_checksum(fs, i));
262 if (getenv("DUMPE2FS_IGNORE_80COL"))
263 fputs(_(","), stdout);
264 else
265 fputs(_("\n "), stdout);
266 fputs(_(" Inode bitmap at "), stdout);
267 print_number(ext2fs_inode_bitmap_loc(fs, i));
268 print_bg_rel_offset(fs, ext2fs_inode_bitmap_loc(fs, i), 0,
269 first_block, last_block);
270 if (ext2fs_has_feature_metadata_csum(fs->super))
271 printf(_(", csum 0x%08x"),
272 ext2fs_inode_bitmap_checksum(fs, i));
273 fputs(_("\n Inode table at "), stdout);
274 print_range(ext2fs_inode_table_loc(fs, i),
275 ext2fs_inode_table_loc(fs, i) +
276 inode_blocks_per_group - 1);
277 print_bg_rel_offset(fs, ext2fs_inode_table_loc(fs, i), 1,
278 first_block, last_block);
279 printf (_("\n %u free %s, %u free inodes, "
280 "%u directories%s"),
281 ext2fs_bg_free_blocks_count(fs, i), units,
282 ext2fs_bg_free_inodes_count(fs, i),
283 ext2fs_bg_used_dirs_count(fs, i),
284 ext2fs_bg_itable_unused(fs, i) ? "" : "\n");
285 if (ext2fs_bg_itable_unused(fs, i))
286 printf (_(", %u unused inodes\n"),
287 ext2fs_bg_itable_unused(fs, i));
288 if (block_bitmap) {
289 fputs(_(" Free blocks: "), stdout);
290 retval = ext2fs_get_block_bitmap_range2(fs->block_map,
291 blk_itr, block_nbytes << 3, block_bitmap);
292 if (retval)
293 com_err("list_desc", retval,
294 "while reading block bitmap");
295 else
296 print_free(i, block_bitmap,
297 fs->super->s_clusters_per_group,
298 fs->super->s_first_data_block,
299 EXT2FS_CLUSTER_RATIO(fs));
300 fputc('\n', stdout);
301 blk_itr += fs->super->s_clusters_per_group;
302 }
303 if (inode_bitmap) {
304 fputs(_(" Free inodes: "), stdout);
305 retval = ext2fs_get_inode_bitmap_range2(fs->inode_map,
306 ino_itr, inode_nbytes << 3, inode_bitmap);
307 if (retval)
308 com_err("list_desc", retval,
309 "while reading inode bitmap");
310 else
311 print_free(i, inode_bitmap,
312 fs->super->s_inodes_per_group,
313 1, 1);
314 fputc('\n', stdout);
315 ino_itr += fs->super->s_inodes_per_group;
316 }
317 }
318 if (block_bitmap)
319 free(block_bitmap);
320 if (inode_bitmap)
321 free(inode_bitmap);
322 }
323
list_bad_blocks(ext2_filsys fs,int dump)324 static void list_bad_blocks(ext2_filsys fs, int dump)
325 {
326 badblocks_list bb_list = 0;
327 badblocks_iterate bb_iter;
328 blk_t blk;
329 errcode_t retval;
330 const char *header, *fmt;
331
332 retval = ext2fs_read_bb_inode(fs, &bb_list);
333 if (retval) {
334 com_err("ext2fs_read_bb_inode", retval, 0);
335 return;
336 }
337 retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter);
338 if (retval) {
339 com_err("ext2fs_badblocks_list_iterate_begin", retval,
340 "%s", _("while printing bad block list"));
341 return;
342 }
343 if (dump) {
344 header = fmt = "%u\n";
345 } else {
346 header = _("Bad blocks: %u");
347 fmt = ", %u";
348 }
349 while (ext2fs_badblocks_list_iterate(bb_iter, &blk)) {
350 printf(header ? header : fmt, blk);
351 header = 0;
352 }
353 ext2fs_badblocks_list_iterate_end(bb_iter);
354 if (!dump)
355 fputc('\n', stdout);
356 ext2fs_badblocks_list_free(bb_list);
357 }
358
print_inline_journal_information(ext2_filsys fs)359 static void print_inline_journal_information(ext2_filsys fs)
360 {
361 journal_superblock_t *jsb;
362 struct ext2_inode inode;
363 ext2_file_t journal_file;
364 errcode_t retval;
365 ext2_ino_t ino = fs->super->s_journal_inum;
366 char buf[1024];
367 int flags;
368
369 if (fs->flags & EXT2_FLAG_IMAGE_FILE)
370 return;
371 retval = ext2fs_read_inode(fs, ino, &inode);
372 if (retval) {
373 com_err(program_name, retval, "%s",
374 _("while reading journal inode"));
375 exit(1);
376 }
377 retval = ext2fs_file_open2(fs, ino, &inode, 0, &journal_file);
378 if (retval) {
379 com_err(program_name, retval, "%s",
380 _("while opening journal inode"));
381 exit(1);
382 }
383 retval = ext2fs_file_read(journal_file, buf, sizeof(buf), 0);
384 if (retval) {
385 com_err(program_name, retval, "%s",
386 _("while reading journal super block"));
387 exit(1);
388 }
389 ext2fs_file_close(journal_file);
390 jsb = (journal_superblock_t *) buf;
391 if (be32_to_cpu(jsb->s_header.h_magic) != JBD2_MAGIC_NUMBER) {
392 fprintf(stderr, "%s",
393 _("Journal superblock magic number invalid!\n"));
394 exit(1);
395 }
396 flags = ext2fs_has_feature_fast_commit(fs->super) ?
397 E2P_LIST_JOURNAL_FLAG_FC : 0;
398 e2p_list_journal_super(stdout, buf, fs->blocksize, flags);
399 }
400
print_journal_information(ext2_filsys fs)401 static void print_journal_information(ext2_filsys fs)
402 {
403 errcode_t retval;
404 char buf[1024];
405 journal_superblock_t *jsb;
406 int flags;
407
408 /* Get the journal superblock */
409 if ((retval = io_channel_read_blk64(fs->io,
410 fs->super->s_first_data_block + 1,
411 -1024, buf))) {
412 com_err(program_name, retval, "%s",
413 _("while reading journal superblock"));
414 exit(1);
415 }
416 jsb = (journal_superblock_t *) buf;
417 if ((jsb->s_header.h_magic != (unsigned) ntohl(JBD2_MAGIC_NUMBER)) ||
418 (jsb->s_header.h_blocktype !=
419 (unsigned) ntohl(JBD2_SUPERBLOCK_V2))) {
420 com_err(program_name, 0, "%s",
421 _("Couldn't find journal superblock magic numbers"));
422 exit(1);
423 }
424 flags = ext2fs_has_feature_fast_commit(fs->super) ?
425 E2P_LIST_JOURNAL_FLAG_FC : 0;
426 e2p_list_journal_super(stdout, buf, fs->blocksize, flags);
427 }
428
check_mmp(ext2_filsys fs)429 static int check_mmp(ext2_filsys fs)
430 {
431 int retval;
432
433 /* This won't actually start MMP on the filesystem, since fs is opened
434 * readonly, but it will do the proper activity checking for us. */
435 retval = ext2fs_mmp_start(fs);
436 if (retval) {
437 com_err(program_name, retval, _("while trying to open %s"),
438 fs->device_name);
439 if (retval == EXT2_ET_MMP_FAILED ||
440 retval == EXT2_ET_MMP_FSCK_ON ||
441 retval == EXT2_ET_MMP_CSUM_INVALID ||
442 retval == EXT2_ET_MMP_UNKNOWN_SEQ) {
443 if (fs->mmp_buf) {
444 struct mmp_struct *mmp = fs->mmp_buf;
445 time_t mmp_time = mmp->mmp_time;
446
447 fprintf(stderr,
448 "%s: MMP update by '%.*s%.*s' at %s",
449 program_name,
450 EXT2_LEN_STR(mmp->mmp_nodename),
451 EXT2_LEN_STR(mmp->mmp_bdevname),
452 ctime(&mmp_time));
453 }
454 retval = 1;
455 } else {
456 retval = 2;
457 }
458 } else {
459 printf("%s: it is safe to mount '%s', MMP is clean\n",
460 program_name, fs->device_name);
461 }
462
463 return retval;
464 }
465
print_mmp_block(ext2_filsys fs)466 static void print_mmp_block(ext2_filsys fs)
467 {
468 struct mmp_struct *mmp;
469 time_t mmp_time;
470 errcode_t retval;
471
472 if (fs->mmp_buf == NULL) {
473 retval = ext2fs_get_mem(fs->blocksize, &fs->mmp_buf);
474 if (retval) {
475 com_err(program_name, retval,
476 _("failed to alloc MMP buffer\n"));
477 return;
478 }
479 }
480
481 retval = ext2fs_mmp_read(fs, fs->super->s_mmp_block, fs->mmp_buf);
482 /* this is only dumping, not checking status, so OK to skip this */
483 if (retval == EXT2_ET_OP_NOT_SUPPORTED)
484 return;
485 if (retval) {
486 com_err(program_name, retval,
487 _("reading MMP block %llu from '%s'\n"),
488 (unsigned long long) fs->super->s_mmp_block,
489 fs->device_name);
490 return;
491 }
492
493 mmp = fs->mmp_buf;
494 mmp_time = mmp->mmp_time;
495 printf("MMP_block:\n");
496 printf(" mmp_magic: 0x%x\n", mmp->mmp_magic);
497 printf(" mmp_check_interval: %d\n", mmp->mmp_check_interval);
498 printf(" mmp_sequence: %#08x\n", mmp->mmp_seq);
499 printf(" mmp_update_date: %s", ctime(&mmp_time));
500 printf(" mmp_update_time: %llu\n",
501 (unsigned long long) mmp->mmp_time);
502 printf(" mmp_node_name: %.*s\n",
503 EXT2_LEN_STR(mmp->mmp_nodename));
504 printf(" mmp_device_name: %.*s\n",
505 EXT2_LEN_STR(mmp->mmp_bdevname));
506 }
507
parse_extended_opts(const char * opts,blk64_t * superblock,int * blocksize)508 static void parse_extended_opts(const char *opts, blk64_t *superblock,
509 int *blocksize)
510 {
511 char *buf, *token, *next, *p, *arg, *badopt = 0;
512 int len;
513 int do_usage = 0;
514
515 len = strlen(opts);
516 buf = malloc(len+1);
517 if (!buf) {
518 fprintf(stderr, "%s",
519 _("Couldn't allocate memory to parse options!\n"));
520 exit(1);
521 }
522 strcpy(buf, opts);
523 for (token = buf; token && *token; token = next) {
524 p = strchr(token, ',');
525 next = 0;
526 if (p) {
527 *p = 0;
528 next = p+1;
529 }
530 arg = strchr(token, '=');
531 if (arg) {
532 *arg = 0;
533 arg++;
534 }
535 if (strcmp(token, "superblock") == 0 ||
536 strcmp(token, "sb") == 0) {
537 if (!arg) {
538 do_usage++;
539 badopt = token;
540 continue;
541 }
542 *superblock = strtoul(arg, &p, 0);
543 if (*p) {
544 fprintf(stderr,
545 _("Invalid superblock parameter: %s\n"),
546 arg);
547 do_usage++;
548 continue;
549 }
550 } else if (strcmp(token, "blocksize") == 0 ||
551 strcmp(token, "bs") == 0) {
552 if (!arg) {
553 do_usage++;
554 badopt = token;
555 continue;
556 }
557 *blocksize = strtoul(arg, &p, 0);
558 if (*p) {
559 fprintf(stderr,
560 _("Invalid blocksize parameter: %s\n"),
561 arg);
562 do_usage++;
563 continue;
564 }
565 } else {
566 do_usage++;
567 badopt = token;
568 }
569 }
570 if (do_usage) {
571 fprintf(stderr, _("\nBad extended option(s) specified: %s\n\n"
572 "Extended options are separated by commas, "
573 "and may take an argument which\n"
574 "\tis set off by an equals ('=') sign.\n\n"
575 "Valid extended options are:\n"
576 "\tsuperblock=<superblock number>\n"
577 "\tblocksize=<blocksize>\n"),
578 badopt ? badopt : "");
579 free(buf);
580 exit(1);
581 }
582 free(buf);
583 }
584
main(int argc,char ** argv)585 int main (int argc, char ** argv)
586 {
587 errcode_t retval;
588 errcode_t retval_csum = 0;
589 const char *error_csum = NULL;
590 ext2_filsys fs;
591 int print_badblocks = 0;
592 blk64_t use_superblock = 0;
593 int use_blocksize = 0;
594 int image_dump = 0;
595 int mmp_check = 0;
596 int mmp_info = 0;
597 int force = 0;
598 int flags;
599 int header_only = 0;
600 int c;
601 int grp_only = 0;
602
603 #ifdef ENABLE_NLS
604 setlocale(LC_MESSAGES, "");
605 setlocale(LC_CTYPE, "");
606 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
607 textdomain(NLS_CAT_NAME);
608 set_com_err_gettext(gettext);
609 #endif
610 add_error_table(&et_ext2_error_table);
611 if (argc && *argv) {
612 if (strrchr(*argv, '/'))
613 program_name = strrchr(*argv, '/') + 1;
614 else
615 program_name = *argv;
616
617 if (strstr(program_name, "mmpstatus") != NULL) {
618 mmp_check = 1;
619 header_only = 1;
620 }
621 }
622
623 if (!mmp_check)
624 fprintf(stderr, "dumpe2fs %s (%s)\n", E2FSPROGS_VERSION,
625 E2FSPROGS_DATE);
626
627 while ((c = getopt(argc, argv, "bfghimxVo:")) != EOF) {
628 switch (c) {
629 case 'b':
630 print_badblocks++;
631 break;
632 case 'f':
633 force++;
634 break;
635 case 'g':
636 grp_only++;
637 break;
638 case 'h':
639 header_only++;
640 break;
641 case 'i':
642 if (mmp_check)
643 mmp_info++;
644 else
645 image_dump++;
646 break;
647 case 'm':
648 mmp_check++;
649 header_only++;
650 if (image_dump) {
651 mmp_info = image_dump;
652 image_dump = 0;
653 }
654 break;
655 case 'o':
656 parse_extended_opts(optarg, &use_superblock,
657 &use_blocksize);
658 break;
659 case 'V':
660 /* Print version number and exit */
661 fprintf(stderr, _("\tUsing %s\n"),
662 error_message(EXT2_ET_BASE));
663 exit(0);
664 case 'x':
665 hex_format++;
666 break;
667 default:
668 usage();
669 }
670 }
671 if (optind != argc - 1)
672 usage();
673
674 device_name = argv[optind++];
675 flags = EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_SOFTSUPP_FEATURES |
676 EXT2_FLAG_64BITS | EXT2_FLAG_THREADS;
677 if (force)
678 flags |= EXT2_FLAG_FORCE;
679 if (image_dump)
680 flags |= EXT2_FLAG_IMAGE_FILE;
681 if (header_only)
682 flags |= EXT2_FLAG_SUPER_ONLY;
683 try_open_again:
684 if (use_superblock && !use_blocksize) {
685 for (use_blocksize = EXT2_MIN_BLOCK_SIZE;
686 use_blocksize <= EXT2_MAX_BLOCK_SIZE;
687 use_blocksize *= 2) {
688 retval = ext2fs_open (device_name, flags,
689 use_superblock,
690 use_blocksize, unix_io_manager,
691 &fs);
692 if (!retval)
693 break;
694 }
695 } else {
696 retval = ext2fs_open(device_name, flags, use_superblock,
697 use_blocksize, unix_io_manager, &fs);
698 }
699 flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
700 if (retval && !retval_csum) {
701 retval_csum = retval;
702 error_csum = _("while trying to open %s");
703 goto try_open_again;
704 }
705 if (retval) {
706 com_err(program_name, retval, _("while trying to open %s"),
707 device_name);
708 printf("%s", _("Couldn't find valid filesystem superblock.\n"));
709 if (retval == EXT2_ET_BAD_MAGIC)
710 check_plausibility(device_name, CHECK_FS_EXIST, NULL);
711 goto out;
712 }
713 fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
714 if (ext2fs_has_feature_64bit(fs->super))
715 blocks64 = 1;
716 if (mmp_check) {
717 if (ext2fs_has_feature_mmp(fs->super) &&
718 fs->super->s_mmp_block != 0) {
719 if (mmp_info) {
720 print_mmp_block(fs);
721 printf(" mmp_block_number: ");
722 print_number(fs->super->s_mmp_block);
723 printf("\n");
724 } else {
725 retval = check_mmp(fs);
726 }
727 if (!retval && retval_csum)
728 retval = 2;
729 } else {
730 fprintf(stderr, _("%s: MMP feature not enabled.\n"),
731 program_name);
732 retval = 2;
733 }
734 } else if (print_badblocks) {
735 list_bad_blocks(fs, 1);
736 } else {
737 if (grp_only)
738 goto just_descriptors;
739 list_super(fs->super);
740 if (ext2fs_has_feature_journal_dev(fs->super)) {
741 print_journal_information(fs);
742
743 goto out_close;
744 }
745 if (ext2fs_has_feature_journal(fs->super) &&
746 (fs->super->s_journal_inum != 0))
747 print_inline_journal_information(fs);
748 if (ext2fs_has_feature_mmp(fs->super) &&
749 fs->super->s_mmp_block != 0)
750 print_mmp_block(fs);
751 list_bad_blocks(fs, 0);
752 if (header_only)
753 goto out_close;
754
755 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
756 try_bitmaps_again:
757 retval = ext2fs_read_bitmaps(fs);
758 if (retval && !retval_csum) {
759 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
760 retval_csum = retval;
761 error_csum = _("while trying to read '%s' bitmaps\n");
762 goto try_bitmaps_again;
763 }
764 just_descriptors:
765 list_desc(fs, grp_only);
766 }
767 out_close:
768 if (retval_csum) {
769 com_err(program_name, retval_csum, error_csum, device_name);
770 printf("%s", _("*** Run e2fsck now!\n\n"));
771 if (!retval)
772 retval = retval_csum;
773 }
774 ext2fs_close_free(&fs);
775 remove_error_table(&et_ext2_error_table);
776 out:
777 return retval;
778 }
779