1 /*
2 * dumpe2fs.c - List the control structures of a second
3 * extended filesystem
4 *
5 * Copyright (C) 1992, 1993, 1994 Remy Card <[email protected]>
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 ext2fs_badblocks_list_free(bb_list);
342 return;
343 }
344 if (dump) {
345 header = fmt = "%u\n";
346 } else {
347 header = _("Bad blocks: %u");
348 fmt = ", %u";
349 }
350 while (ext2fs_badblocks_list_iterate(bb_iter, &blk)) {
351 printf(header ? header : fmt, blk);
352 header = 0;
353 }
354 ext2fs_badblocks_list_iterate_end(bb_iter);
355 if (!dump)
356 fputc('\n', stdout);
357 ext2fs_badblocks_list_free(bb_list);
358 }
359
print_inline_journal_information(ext2_filsys fs)360 static void print_inline_journal_information(ext2_filsys fs)
361 {
362 journal_superblock_t *jsb;
363 struct ext2_inode inode;
364 ext2_file_t journal_file;
365 errcode_t retval;
366 ext2_ino_t ino = fs->super->s_journal_inum;
367 char buf[1024];
368 int flags;
369
370 if (fs->flags & EXT2_FLAG_IMAGE_FILE)
371 return;
372 retval = ext2fs_read_inode(fs, ino, &inode);
373 if (retval) {
374 com_err(program_name, retval, "%s",
375 _("while reading journal inode"));
376 exit(1);
377 }
378 retval = ext2fs_file_open2(fs, ino, &inode, 0, &journal_file);
379 if (retval) {
380 com_err(program_name, retval, "%s",
381 _("while opening journal inode"));
382 exit(1);
383 }
384 retval = ext2fs_file_read(journal_file, buf, sizeof(buf), 0);
385 if (retval) {
386 com_err(program_name, retval, "%s",
387 _("while reading journal super block"));
388 exit(1);
389 }
390 ext2fs_file_close(journal_file);
391 jsb = (journal_superblock_t *) buf;
392 if (be32_to_cpu(jsb->s_header.h_magic) != JBD2_MAGIC_NUMBER) {
393 fprintf(stderr, "%s",
394 _("Journal superblock magic number invalid!\n"));
395 exit(1);
396 }
397 flags = ext2fs_has_feature_fast_commit(fs->super) ?
398 E2P_LIST_JOURNAL_FLAG_FC : 0;
399 e2p_list_journal_super(stdout, buf, fs->blocksize, flags);
400 }
401
print_journal_information(ext2_filsys fs)402 static void print_journal_information(ext2_filsys fs)
403 {
404 errcode_t retval;
405 char buf[1024];
406 journal_superblock_t *jsb;
407 int flags;
408
409 /* Get the journal superblock */
410 if ((retval = io_channel_read_blk64(fs->io,
411 fs->super->s_first_data_block + 1,
412 -1024, buf))) {
413 com_err(program_name, retval, "%s",
414 _("while reading journal superblock"));
415 exit(1);
416 }
417 jsb = (journal_superblock_t *) buf;
418 if ((jsb->s_header.h_magic != (unsigned) ntohl(JBD2_MAGIC_NUMBER)) ||
419 (jsb->s_header.h_blocktype !=
420 (unsigned) ntohl(JBD2_SUPERBLOCK_V2))) {
421 com_err(program_name, 0, "%s",
422 _("Couldn't find journal superblock magic numbers"));
423 exit(1);
424 }
425 flags = ext2fs_has_feature_fast_commit(fs->super) ?
426 E2P_LIST_JOURNAL_FLAG_FC : 0;
427 e2p_list_journal_super(stdout, buf, fs->blocksize, flags);
428 }
429
check_mmp(ext2_filsys fs)430 static int check_mmp(ext2_filsys fs)
431 {
432 int retval;
433
434 /* This won't actually start MMP on the filesystem, since fs is opened
435 * readonly, but it will do the proper activity checking for us. */
436 retval = ext2fs_mmp_start(fs);
437 if (retval) {
438 com_err(program_name, retval, _("while trying to open %s"),
439 fs->device_name);
440 if (retval == EXT2_ET_MMP_FAILED ||
441 retval == EXT2_ET_MMP_FSCK_ON ||
442 retval == EXT2_ET_MMP_CSUM_INVALID ||
443 retval == EXT2_ET_MMP_UNKNOWN_SEQ) {
444 if (fs->mmp_buf) {
445 struct mmp_struct *mmp = fs->mmp_buf;
446 time_t mmp_time = mmp->mmp_time;
447
448 fprintf(stderr,
449 "%s: MMP update by '%.*s%.*s' at %s",
450 program_name,
451 EXT2_LEN_STR(mmp->mmp_nodename),
452 EXT2_LEN_STR(mmp->mmp_bdevname),
453 ctime(&mmp_time));
454 }
455 retval = 1;
456 } else {
457 retval = 2;
458 }
459 } else {
460 printf("%s: it is safe to mount '%s', MMP is clean\n",
461 program_name, fs->device_name);
462 }
463
464 return retval;
465 }
466
print_mmp_block(ext2_filsys fs)467 static void print_mmp_block(ext2_filsys fs)
468 {
469 struct mmp_struct *mmp;
470 time_t mmp_time;
471 errcode_t retval;
472
473 if (fs->mmp_buf == NULL) {
474 retval = ext2fs_get_mem(fs->blocksize, &fs->mmp_buf);
475 if (retval) {
476 com_err(program_name, retval,
477 _("failed to alloc MMP buffer\n"));
478 return;
479 }
480 }
481
482 retval = ext2fs_mmp_read(fs, fs->super->s_mmp_block, fs->mmp_buf);
483 /* this is only dumping, not checking status, so OK to skip this */
484 if (retval == EXT2_ET_OP_NOT_SUPPORTED)
485 return;
486 if (retval) {
487 com_err(program_name, retval,
488 _("reading MMP block %llu from '%s'\n"),
489 (unsigned long long) fs->super->s_mmp_block,
490 fs->device_name);
491 return;
492 }
493
494 mmp = fs->mmp_buf;
495 mmp_time = mmp->mmp_time;
496 printf("MMP_block:\n");
497 printf(" mmp_magic: 0x%x\n", mmp->mmp_magic);
498 printf(" mmp_check_interval: %d\n", mmp->mmp_check_interval);
499 printf(" mmp_sequence: %#08x\n", mmp->mmp_seq);
500 printf(" mmp_update_date: %s", ctime(&mmp_time));
501 printf(" mmp_update_time: %llu\n",
502 (unsigned long long) mmp->mmp_time);
503 printf(" mmp_node_name: %.*s\n",
504 EXT2_LEN_STR(mmp->mmp_nodename));
505 printf(" mmp_device_name: %.*s\n",
506 EXT2_LEN_STR(mmp->mmp_bdevname));
507 }
508
parse_extended_opts(const char * opts,blk64_t * superblock,int * blocksize)509 static void parse_extended_opts(const char *opts, blk64_t *superblock,
510 int *blocksize)
511 {
512 char *buf, *token, *next, *p, *arg, *badopt = 0;
513 int len;
514 int do_usage = 0;
515
516 len = strlen(opts);
517 buf = malloc(len+1);
518 if (!buf) {
519 fprintf(stderr, "%s",
520 _("Couldn't allocate memory to parse options!\n"));
521 exit(1);
522 }
523 strcpy(buf, opts);
524 for (token = buf; token && *token; token = next) {
525 p = strchr(token, ',');
526 next = 0;
527 if (p) {
528 *p = 0;
529 next = p+1;
530 }
531 arg = strchr(token, '=');
532 if (arg) {
533 *arg = 0;
534 arg++;
535 }
536 if (strcmp(token, "superblock") == 0 ||
537 strcmp(token, "sb") == 0) {
538 if (!arg) {
539 do_usage++;
540 badopt = token;
541 continue;
542 }
543 *superblock = strtoul(arg, &p, 0);
544 if (*p) {
545 fprintf(stderr,
546 _("Invalid superblock parameter: %s\n"),
547 arg);
548 do_usage++;
549 continue;
550 }
551 } else if (strcmp(token, "blocksize") == 0 ||
552 strcmp(token, "bs") == 0) {
553 if (!arg) {
554 do_usage++;
555 badopt = token;
556 continue;
557 }
558 *blocksize = strtoul(arg, &p, 0);
559 if (*p) {
560 fprintf(stderr,
561 _("Invalid blocksize parameter: %s\n"),
562 arg);
563 do_usage++;
564 continue;
565 }
566 } else {
567 do_usage++;
568 badopt = token;
569 }
570 }
571 if (do_usage) {
572 fprintf(stderr, _("\nBad extended option(s) specified: %s\n\n"
573 "Extended options are separated by commas, "
574 "and may take an argument which\n"
575 "\tis set off by an equals ('=') sign.\n\n"
576 "Valid extended options are:\n"
577 "\tsuperblock=<superblock number>\n"
578 "\tblocksize=<blocksize>\n"),
579 badopt ? badopt : "");
580 free(buf);
581 exit(1);
582 }
583 free(buf);
584 }
585
main(int argc,char ** argv)586 int main (int argc, char ** argv)
587 {
588 errcode_t retval;
589 errcode_t retval_csum = 0;
590 const char *error_csum = NULL;
591 ext2_filsys fs;
592 int print_badblocks = 0;
593 blk64_t use_superblock = 0;
594 int use_blocksize = 0;
595 int image_dump = 0;
596 int mmp_check = 0;
597 int mmp_info = 0;
598 int force = 0;
599 int flags;
600 int header_only = 0;
601 int c;
602 int grp_only = 0;
603
604 #ifdef ENABLE_NLS
605 setlocale(LC_MESSAGES, "");
606 setlocale(LC_CTYPE, "");
607 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
608 textdomain(NLS_CAT_NAME);
609 set_com_err_gettext(gettext);
610 #endif
611 add_error_table(&et_ext2_error_table);
612 if (argc && *argv) {
613 if (strrchr(*argv, '/'))
614 program_name = strrchr(*argv, '/') + 1;
615 else
616 program_name = *argv;
617
618 if (strstr(program_name, "mmpstatus") != NULL) {
619 mmp_check = 1;
620 header_only = 1;
621 }
622 } else
623 usage();
624
625 if (!mmp_check)
626 fprintf(stderr, "dumpe2fs %s (%s)\n", E2FSPROGS_VERSION,
627 E2FSPROGS_DATE);
628
629 while ((c = getopt(argc, argv, "bfghimxVo:")) != EOF) {
630 switch (c) {
631 case 'b':
632 print_badblocks++;
633 break;
634 case 'f':
635 force++;
636 break;
637 case 'g':
638 grp_only++;
639 break;
640 case 'h':
641 header_only++;
642 break;
643 case 'i':
644 if (mmp_check)
645 mmp_info++;
646 else
647 image_dump++;
648 break;
649 case 'm':
650 mmp_check++;
651 header_only++;
652 if (image_dump) {
653 mmp_info = image_dump;
654 image_dump = 0;
655 }
656 break;
657 case 'o':
658 parse_extended_opts(optarg, &use_superblock,
659 &use_blocksize);
660 break;
661 case 'V':
662 /* Print version number and exit */
663 fprintf(stderr, _("\tUsing %s\n"),
664 error_message(EXT2_ET_BASE));
665 exit(0);
666 case 'x':
667 hex_format++;
668 break;
669 default:
670 usage();
671 }
672 }
673 if (optind != argc - 1)
674 usage();
675
676 device_name = argv[optind++];
677 flags = EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_SOFTSUPP_FEATURES |
678 EXT2_FLAG_64BITS | EXT2_FLAG_THREADS;
679 if (force)
680 flags |= EXT2_FLAG_FORCE;
681 if (image_dump)
682 flags |= EXT2_FLAG_IMAGE_FILE;
683 if (header_only)
684 flags |= EXT2_FLAG_SUPER_ONLY;
685 try_open_again:
686 if (use_superblock && !use_blocksize) {
687 for (use_blocksize = EXT2_MIN_BLOCK_SIZE;
688 use_blocksize <= EXT2_MAX_BLOCK_SIZE;
689 use_blocksize *= 2) {
690 retval = ext2fs_open (device_name, flags,
691 use_superblock,
692 use_blocksize, unix_io_manager,
693 &fs);
694 if (!retval)
695 break;
696 }
697 } else {
698 retval = ext2fs_open(device_name, flags, use_superblock,
699 use_blocksize, unix_io_manager, &fs);
700 }
701 flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
702 if (retval && !retval_csum) {
703 retval_csum = retval;
704 error_csum = _("while trying to open %s");
705 goto try_open_again;
706 }
707 if (retval) {
708 com_err(program_name, retval, _("while trying to open %s"),
709 device_name);
710 printf("%s", _("Couldn't find valid filesystem superblock.\n"));
711 if (retval == EXT2_ET_BAD_MAGIC)
712 check_plausibility(device_name, CHECK_FS_EXIST, NULL);
713 goto out;
714 }
715 fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
716 if (ext2fs_has_feature_64bit(fs->super))
717 blocks64 = 1;
718 if (mmp_check) {
719 if (ext2fs_has_feature_mmp(fs->super) &&
720 fs->super->s_mmp_block != 0) {
721 if (mmp_info) {
722 print_mmp_block(fs);
723 printf(" mmp_block_number: ");
724 print_number(fs->super->s_mmp_block);
725 printf("\n");
726 } else {
727 retval = check_mmp(fs);
728 }
729 if (!retval && retval_csum)
730 retval = 2;
731 } else {
732 fprintf(stderr, _("%s: MMP feature not enabled.\n"),
733 program_name);
734 retval = 2;
735 }
736 } else if (print_badblocks) {
737 list_bad_blocks(fs, 1);
738 } else {
739 if (grp_only)
740 goto just_descriptors;
741 list_super(fs->super);
742 if (ext2fs_has_feature_journal_dev(fs->super)) {
743 print_journal_information(fs);
744
745 goto out_close;
746 }
747 if (ext2fs_has_feature_journal(fs->super) &&
748 (fs->super->s_journal_inum != 0))
749 print_inline_journal_information(fs);
750 if (ext2fs_has_feature_mmp(fs->super) &&
751 fs->super->s_mmp_block != 0)
752 print_mmp_block(fs);
753 list_bad_blocks(fs, 0);
754 if (header_only)
755 goto out_close;
756
757 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
758 try_bitmaps_again:
759 retval = ext2fs_read_bitmaps(fs);
760 if (retval && !retval_csum) {
761 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
762 retval_csum = retval;
763 error_csum = _("while trying to read '%s' bitmaps\n");
764 goto try_bitmaps_again;
765 }
766 just_descriptors:
767 list_desc(fs, grp_only);
768 }
769 out_close:
770 if (retval_csum) {
771 com_err(program_name, retval_csum, error_csum, device_name);
772 printf("%s", _("*** Run e2fsck now!\n\n"));
773 if (!retval)
774 retval = retval_csum;
775 }
776 ext2fs_close_free(&fs);
777 remove_error_table(&et_ext2_error_table);
778 out:
779 return retval;
780 }
781