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[thirdparty/e2fsprogs.git] / debugfs / debugfs.c
1 /*
2 * debugfs.c --- a program which allows you to attach an ext2fs
3 * filesystem and play with it.
4 *
5 * Copyright (C) 1993 Theodore Ts'o. This file may be redistributed
6 * under the terms of the GNU Public License.
7 *
8 * Modifications by Robert Sanders <gt8134b@prism.gatech.edu>
9 */
10
11 #include "config.h"
12 #include <stdio.h>
13 #include <unistd.h>
14 #include <stdlib.h>
15 #include <ctype.h>
16 #include <string.h>
17 #include <time.h>
18 #include <libgen.h>
19 #ifdef HAVE_GETOPT_H
20 #include <getopt.h>
21 #else
22 extern int optind;
23 extern char *optarg;
24 #endif
25 #ifdef HAVE_ERRNO_H
26 #include <errno.h>
27 #endif
28 #include <fcntl.h>
29 #ifdef HAVE_SYS_SYSMACROS_H
30 #include <sys/sysmacros.h>
31 #endif
32
33 #include "debugfs.h"
34 #include "uuid/uuid.h"
35 #include "e2p/e2p.h"
36
37 #include <ext2fs/ext2_ext_attr.h>
38
39 #include "../version.h"
40 #include "jfs_user.h"
41 #include "support/plausible.h"
42
43 #ifndef BUFSIZ
44 #define BUFSIZ 8192
45 #endif
46
47 #ifdef CONFIG_JBD_DEBUG /* Enabled by configure --enable-jbd-debug */
48 int journal_enable_debug = -1;
49 #endif
50
51 ss_request_table *extra_cmds;
52 const char *debug_prog_name;
53 int sci_idx;
54
55 ext2_filsys current_fs;
56 quota_ctx_t current_qctx;
57 ext2_ino_t root, cwd;
58
59 static int debugfs_setup_tdb(const char *device_name, char *undo_file,
60 io_manager *io_ptr)
61 {
62 errcode_t retval = ENOMEM;
63 char *tdb_dir = NULL, *tdb_file = NULL;
64 char *dev_name, *tmp_name;
65
66 /* (re)open a specific undo file */
67 if (undo_file && undo_file[0] != 0) {
68 retval = set_undo_io_backing_manager(*io_ptr);
69 if (retval)
70 goto err;
71 *io_ptr = undo_io_manager;
72 retval = set_undo_io_backup_file(undo_file);
73 if (retval)
74 goto err;
75 printf("Overwriting existing filesystem; this can be undone "
76 "using the command:\n"
77 " e2undo %s %s\n\n",
78 undo_file, device_name);
79 return retval;
80 }
81
82 /*
83 * Configuration via a conf file would be
84 * nice
85 */
86 tdb_dir = ss_safe_getenv("E2FSPROGS_UNDO_DIR");
87 if (!tdb_dir)
88 tdb_dir = "/var/lib/e2fsprogs";
89
90 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
91 access(tdb_dir, W_OK))
92 return 0;
93
94 tmp_name = strdup(device_name);
95 if (!tmp_name)
96 goto errout;
97 dev_name = basename(tmp_name);
98 tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
99 if (!tdb_file) {
100 free(tmp_name);
101 goto errout;
102 }
103 sprintf(tdb_file, "%s/debugfs-%s.e2undo", tdb_dir, dev_name);
104 free(tmp_name);
105
106 if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
107 retval = errno;
108 com_err("debugfs", retval,
109 "while trying to delete %s", tdb_file);
110 goto errout;
111 }
112
113 retval = set_undo_io_backing_manager(*io_ptr);
114 if (retval)
115 goto errout;
116 *io_ptr = undo_io_manager;
117 retval = set_undo_io_backup_file(tdb_file);
118 if (retval)
119 goto errout;
120 printf("Overwriting existing filesystem; this can be undone "
121 "using the command:\n"
122 " e2undo %s %s\n\n", tdb_file, device_name);
123
124 free(tdb_file);
125 return 0;
126 errout:
127 free(tdb_file);
128 err:
129 com_err("debugfs", retval, "while trying to setup undo file\n");
130 return retval;
131 }
132
133 static void open_filesystem(char *device, int open_flags, blk64_t superblock,
134 blk64_t blocksize, int catastrophic,
135 char *data_filename, char *undo_file)
136 {
137 int retval;
138 io_channel data_io = 0;
139 io_manager io_ptr = unix_io_manager;
140
141 if (superblock != 0 && blocksize == 0) {
142 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
143 current_fs = NULL;
144 return;
145 }
146
147 if (data_filename) {
148 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
149 com_err(device, 0,
150 "The -d option is only valid when reading an e2image file");
151 current_fs = NULL;
152 return;
153 }
154 retval = unix_io_manager->open(data_filename, 0, &data_io);
155 if (retval) {
156 com_err(data_filename, 0, "while opening data source");
157 current_fs = NULL;
158 return;
159 }
160 }
161
162 if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
163 com_err(device, 0,
164 "opening read-only because of catastrophic mode");
165 open_flags &= ~EXT2_FLAG_RW;
166 }
167 if (catastrophic)
168 open_flags |= EXT2_FLAG_SKIP_MMP;
169
170 if (undo_file) {
171 retval = debugfs_setup_tdb(device, undo_file, &io_ptr);
172 if (retval)
173 exit(1);
174 }
175
176 try_open_again:
177 retval = ext2fs_open(device, open_flags, superblock, blocksize,
178 io_ptr, &current_fs);
179 if (retval && !(open_flags & EXT2_FLAG_IGNORE_CSUM_ERRORS)) {
180 open_flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
181 printf("Checksum errors in superblock! Retrying...\n");
182 goto try_open_again;
183 }
184 if (retval) {
185 com_err(device, retval, "while opening filesystem");
186 if (retval == EXT2_ET_BAD_MAGIC)
187 check_plausibility(device, CHECK_FS_EXIST, NULL);
188 current_fs = NULL;
189 return;
190 }
191 current_fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
192
193 if (catastrophic)
194 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
195 else {
196 retval = ext2fs_read_bitmaps(current_fs);
197 if (retval) {
198 com_err(device, retval,
199 "while reading allocation bitmaps");
200 goto errout;
201 }
202 }
203
204 if (data_io) {
205 retval = ext2fs_set_data_io(current_fs, data_io);
206 if (retval) {
207 com_err(device, retval,
208 "while setting data source");
209 goto errout;
210 }
211 }
212
213 root = cwd = EXT2_ROOT_INO;
214 return;
215
216 errout:
217 retval = ext2fs_close_free(&current_fs);
218 if (retval)
219 com_err(device, retval, "while trying to close filesystem");
220 }
221
222 void do_open_filesys(int argc, char **argv)
223 {
224 int c, err;
225 int catastrophic = 0;
226 blk64_t superblock = 0;
227 blk64_t blocksize = 0;
228 int open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
229 char *data_filename = 0;
230 char *undo_file = NULL;
231
232 reset_getopt();
233 while ((c = getopt(argc, argv, "iwfecb:s:d:Dz:")) != EOF) {
234 switch (c) {
235 case 'i':
236 open_flags |= EXT2_FLAG_IMAGE_FILE;
237 break;
238 case 'w':
239 #ifdef READ_ONLY
240 goto print_usage;
241 #else
242 open_flags |= EXT2_FLAG_RW;
243 #endif /* READ_ONLY */
244 break;
245 case 'f':
246 open_flags |= EXT2_FLAG_FORCE;
247 break;
248 case 'e':
249 open_flags |= EXT2_FLAG_EXCLUSIVE;
250 break;
251 case 'c':
252 catastrophic = 1;
253 break;
254 case 'd':
255 data_filename = optarg;
256 break;
257 case 'D':
258 open_flags |= EXT2_FLAG_DIRECT_IO;
259 break;
260 case 'b':
261 blocksize = parse_ulong(optarg, argv[0],
262 "block size", &err);
263 if (err)
264 return;
265 break;
266 case 's':
267 err = strtoblk(argv[0], optarg,
268 "superblock block number", &superblock);
269 if (err)
270 return;
271 break;
272 case 'z':
273 undo_file = optarg;
274 break;
275 default:
276 goto print_usage;
277 }
278 }
279 if (optind != argc-1) {
280 goto print_usage;
281 }
282 if (check_fs_not_open(argv[0]))
283 return;
284 open_filesystem(argv[optind], open_flags,
285 superblock, blocksize, catastrophic,
286 data_filename, undo_file);
287 return;
288
289 print_usage:
290 fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] "
291 "[-d image_filename] [-z undo_file] [-c] [-i] [-f] [-e] [-D] "
292 #ifndef READ_ONLY
293 "[-w] "
294 #endif
295 "<device>\n", argv[0]);
296 }
297
298 void do_lcd(int argc, char **argv)
299 {
300 if (argc != 2) {
301 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>");
302 return;
303 }
304
305 if (chdir(argv[1]) == -1) {
306 com_err(argv[0], errno,
307 "while trying to change native directory to %s",
308 argv[1]);
309 return;
310 }
311 }
312
313 static void close_filesystem(NOARGS)
314 {
315 int retval;
316
317 if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
318 retval = ext2fs_write_inode_bitmap(current_fs);
319 if (retval)
320 com_err("ext2fs_write_inode_bitmap", retval, 0);
321 }
322 if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
323 retval = ext2fs_write_block_bitmap(current_fs);
324 if (retval)
325 com_err("ext2fs_write_block_bitmap", retval, 0);
326 }
327 if (current_qctx)
328 quota_release_context(&current_qctx);
329 retval = ext2fs_close_free(&current_fs);
330 if (retval)
331 com_err("ext2fs_close", retval, 0);
332 return;
333 }
334
335 void do_close_filesys(int argc, char **argv)
336 {
337 int c;
338
339 if (check_fs_open(argv[0]))
340 return;
341
342 reset_getopt();
343 while ((c = getopt (argc, argv, "a")) != EOF) {
344 switch (c) {
345 case 'a':
346 current_fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
347 break;
348 default:
349 goto print_usage;
350 }
351 }
352
353 if (argc > optind) {
354 print_usage:
355 com_err(0, 0, "Usage: close_filesys [-a]");
356 return;
357 }
358
359 close_filesystem();
360 }
361
362 #ifndef READ_ONLY
363 void do_init_filesys(int argc, char **argv)
364 {
365 struct ext2_super_block param;
366 errcode_t retval;
367 int err;
368 blk64_t blocks;
369
370 if (common_args_process(argc, argv, 3, 3, "initialize",
371 "<device> <blocks>", CHECK_FS_NOTOPEN))
372 return;
373
374 memset(&param, 0, sizeof(struct ext2_super_block));
375 err = strtoblk(argv[0], argv[2], "blocks count", &blocks);
376 if (err)
377 return;
378 ext2fs_blocks_count_set(&param, blocks);
379 retval = ext2fs_initialize(argv[1], 0, &param,
380 unix_io_manager, &current_fs);
381 if (retval) {
382 com_err(argv[1], retval, "while initializing filesystem");
383 current_fs = NULL;
384 return;
385 }
386 root = cwd = EXT2_ROOT_INO;
387 return;
388 }
389
390 static void print_features(struct ext2_super_block * s, FILE *f)
391 {
392 int i, j, printed=0;
393 __u32 *mask = &s->s_feature_compat, m;
394
395 fputs("Filesystem features:", f);
396 for (i=0; i <3; i++,mask++) {
397 for (j=0,m=1; j < 32; j++, m<<=1) {
398 if (*mask & m) {
399 fprintf(f, " %s", e2p_feature2string(i, m));
400 printed++;
401 }
402 }
403 }
404 if (printed == 0)
405 fputs("(none)", f);
406 fputs("\n", f);
407 }
408 #endif /* READ_ONLY */
409
410 static void print_bg_opts(ext2_filsys fs, dgrp_t group, int mask,
411 const char *str, int *first, FILE *f)
412 {
413 if (ext2fs_bg_flags_test(fs, group, mask)) {
414 if (*first) {
415 fputs(" [", f);
416 *first = 0;
417 } else
418 fputs(", ", f);
419 fputs(str, f);
420 }
421 }
422
423 void do_show_super_stats(int argc, char *argv[])
424 {
425 const char *units ="block";
426 dgrp_t i;
427 FILE *out;
428 int c, header_only = 0;
429 int numdirs = 0, first, gdt_csum;
430
431 reset_getopt();
432 while ((c = getopt (argc, argv, "h")) != EOF) {
433 switch (c) {
434 case 'h':
435 header_only++;
436 break;
437 default:
438 goto print_usage;
439 }
440 }
441 if (optind != argc) {
442 goto print_usage;
443 }
444 if (check_fs_open(argv[0]))
445 return;
446 out = open_pager();
447
448 if (ext2fs_has_feature_bigalloc(current_fs->super))
449 units = "cluster";
450
451 list_super2(current_fs->super, out);
452 if (ext2fs_has_feature_metadata_csum(current_fs->super) &&
453 !ext2fs_superblock_csum_verify(current_fs,
454 current_fs->super)) {
455 __u32 orig_csum = current_fs->super->s_checksum;
456
457 ext2fs_superblock_csum_set(current_fs,
458 current_fs->super);
459 fprintf(out, "Expected Checksum: 0x%08x\n",
460 current_fs->super->s_checksum);
461 current_fs->super->s_checksum = orig_csum;
462 }
463 for (i=0; i < current_fs->group_desc_count; i++)
464 numdirs += ext2fs_bg_used_dirs_count(current_fs, i);
465 fprintf(out, "Directories: %d\n", numdirs);
466
467 if (header_only) {
468 close_pager(out);
469 return;
470 }
471
472 gdt_csum = ext2fs_has_group_desc_csum(current_fs);
473 for (i = 0; i < current_fs->group_desc_count; i++) {
474 fprintf(out, " Group %2d: block bitmap at %llu, "
475 "inode bitmap at %llu, "
476 "inode table at %llu\n"
477 " %u free %s%s, "
478 "%u free %s, "
479 "%u used %s%s",
480 i, ext2fs_block_bitmap_loc(current_fs, i),
481 ext2fs_inode_bitmap_loc(current_fs, i),
482 ext2fs_inode_table_loc(current_fs, i),
483 ext2fs_bg_free_blocks_count(current_fs, i), units,
484 ext2fs_bg_free_blocks_count(current_fs, i) != 1 ?
485 "s" : "",
486 ext2fs_bg_free_inodes_count(current_fs, i),
487 ext2fs_bg_free_inodes_count(current_fs, i) != 1 ?
488 "inodes" : "inode",
489 ext2fs_bg_used_dirs_count(current_fs, i),
490 ext2fs_bg_used_dirs_count(current_fs, i) != 1 ? "directories"
491 : "directory", gdt_csum ? ", " : "\n");
492 if (gdt_csum)
493 fprintf(out, "%u unused %s\n",
494 ext2fs_bg_itable_unused(current_fs, i),
495 ext2fs_bg_itable_unused(current_fs, i) != 1 ?
496 "inodes" : "inode");
497 first = 1;
498 print_bg_opts(current_fs, i, EXT2_BG_INODE_UNINIT, "Inode not init",
499 &first, out);
500 print_bg_opts(current_fs, i, EXT2_BG_BLOCK_UNINIT, "Block not init",
501 &first, out);
502 if (gdt_csum) {
503 fprintf(out, "%sChecksum 0x%04x",
504 first ? " [":", ", ext2fs_bg_checksum(current_fs, i));
505 first = 0;
506 }
507 if (!first)
508 fputs("]\n", out);
509 }
510 close_pager(out);
511 return;
512 print_usage:
513 fprintf(stderr, "%s: Usage: show_super_stats [-h]\n", argv[0]);
514 }
515
516 #ifndef READ_ONLY
517 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
518 char **argv EXT2FS_ATTR((unused)))
519 {
520 if (check_fs_open(argv[0]))
521 return;
522 if (check_fs_read_write(argv[0]))
523 return;
524
525 if (argv[1] && !strcmp(argv[1], "-clean"))
526 current_fs->super->s_state |= EXT2_VALID_FS;
527 else
528 current_fs->super->s_state &= ~EXT2_VALID_FS;
529 ext2fs_mark_super_dirty(current_fs);
530 }
531 #endif /* READ_ONLY */
532
533 struct list_blocks_struct {
534 FILE *f;
535 e2_blkcnt_t total;
536 blk64_t first_block, last_block;
537 e2_blkcnt_t first_bcnt, last_bcnt;
538 e2_blkcnt_t first;
539 };
540
541 static void finish_range(struct list_blocks_struct *lb)
542 {
543 if (lb->first_block == 0)
544 return;
545 if (lb->first)
546 lb->first = 0;
547 else
548 fprintf(lb->f, ", ");
549 if (lb->first_block == lb->last_block)
550 fprintf(lb->f, "(%lld):%llu",
551 (long long)lb->first_bcnt, lb->first_block);
552 else
553 fprintf(lb->f, "(%lld-%lld):%llu-%llu",
554 (long long)lb->first_bcnt, (long long)lb->last_bcnt,
555 lb->first_block, lb->last_block);
556 lb->first_block = 0;
557 }
558
559 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
560 blk64_t *blocknr, e2_blkcnt_t blockcnt,
561 blk64_t ref_block EXT2FS_ATTR((unused)),
562 int ref_offset EXT2FS_ATTR((unused)),
563 void *private)
564 {
565 struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
566
567 lb->total++;
568 if (blockcnt >= 0) {
569 /*
570 * See if we can add on to the existing range (if it exists)
571 */
572 if (lb->first_block &&
573 (lb->last_block+1 == *blocknr) &&
574 (lb->last_bcnt+1 == blockcnt)) {
575 lb->last_block = *blocknr;
576 lb->last_bcnt = blockcnt;
577 return 0;
578 }
579 /*
580 * Start a new range.
581 */
582 finish_range(lb);
583 lb->first_block = lb->last_block = *blocknr;
584 lb->first_bcnt = lb->last_bcnt = blockcnt;
585 return 0;
586 }
587 /*
588 * Not a normal block. Always force a new range.
589 */
590 finish_range(lb);
591 if (lb->first)
592 lb->first = 0;
593 else
594 fprintf(lb->f, ", ");
595 if (blockcnt == -1)
596 fprintf(lb->f, "(IND):%llu", (unsigned long long) *blocknr);
597 else if (blockcnt == -2)
598 fprintf(lb->f, "(DIND):%llu", (unsigned long long) *blocknr);
599 else if (blockcnt == -3)
600 fprintf(lb->f, "(TIND):%llu", (unsigned long long) *blocknr);
601 return 0;
602 }
603
604 static void internal_dump_inode_extra(FILE *out,
605 const char *prefix EXT2FS_ATTR((unused)),
606 ext2_ino_t inode_num EXT2FS_ATTR((unused)),
607 struct ext2_inode_large *inode)
608 {
609 fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
610 if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
611 EXT2_GOOD_OLD_INODE_SIZE) {
612 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
613 inode->i_extra_isize);
614 return;
615 }
616 }
617
618 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
619 {
620 struct list_blocks_struct lb;
621
622 fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
623 lb.total = 0;
624 lb.first_block = 0;
625 lb.f = f;
626 lb.first = 1;
627 ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
628 list_blocks_proc, (void *)&lb);
629 finish_range(&lb);
630 if (lb.total)
631 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
632 fprintf(f,"\n");
633 }
634
635 static int int_log10(unsigned long long arg)
636 {
637 int l = 0;
638
639 arg = arg / 10;
640 while (arg) {
641 l++;
642 arg = arg / 10;
643 }
644 return l;
645 }
646
647 #define DUMP_LEAF_EXTENTS 0x01
648 #define DUMP_NODE_EXTENTS 0x02
649 #define DUMP_EXTENT_TABLE 0x04
650
651 static void dump_extents(FILE *f, const char *prefix, ext2_ino_t ino,
652 int flags, int logical_width, int physical_width)
653 {
654 ext2_extent_handle_t handle;
655 struct ext2fs_extent extent;
656 struct ext2_extent_info info;
657 int op = EXT2_EXTENT_ROOT;
658 unsigned int printed = 0;
659 errcode_t errcode;
660
661 errcode = ext2fs_extent_open(current_fs, ino, &handle);
662 if (errcode)
663 return;
664
665 if (flags & DUMP_EXTENT_TABLE)
666 fprintf(f, "Level Entries %*s %*s Length Flags\n",
667 (logical_width*2)+3, "Logical",
668 (physical_width*2)+3, "Physical");
669 else
670 fprintf(f, "%sEXTENTS:\n%s", prefix, prefix);
671
672 while (1) {
673 errcode = ext2fs_extent_get(handle, op, &extent);
674
675 if (errcode)
676 break;
677
678 op = EXT2_EXTENT_NEXT;
679
680 if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
681 continue;
682
683 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
684 if ((flags & DUMP_LEAF_EXTENTS) == 0)
685 continue;
686 } else {
687 if ((flags & DUMP_NODE_EXTENTS) == 0)
688 continue;
689 }
690
691 errcode = ext2fs_extent_get_info(handle, &info);
692 if (errcode)
693 continue;
694
695 if (!(extent.e_flags & EXT2_EXTENT_FLAGS_LEAF)) {
696 if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
697 continue;
698
699 if (flags & DUMP_EXTENT_TABLE) {
700 fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
701 "%*llu%*s %6u\n",
702 info.curr_level, info.max_depth,
703 info.curr_entry, info.num_entries,
704 logical_width,
705 extent.e_lblk,
706 logical_width,
707 extent.e_lblk + (extent.e_len - 1),
708 physical_width,
709 extent.e_pblk,
710 physical_width+3, "", extent.e_len);
711 continue;
712 }
713
714 fprintf(f, "%s(ETB%d):%lld",
715 printed ? ", " : "", info.curr_level,
716 extent.e_pblk);
717 printed = 1;
718 continue;
719 }
720
721 if (flags & DUMP_EXTENT_TABLE) {
722 fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
723 "%*llu - %*llu %6u %s\n",
724 info.curr_level, info.max_depth,
725 info.curr_entry, info.num_entries,
726 logical_width,
727 extent.e_lblk,
728 logical_width,
729 extent.e_lblk + (extent.e_len - 1),
730 physical_width,
731 extent.e_pblk,
732 physical_width,
733 extent.e_pblk + (extent.e_len - 1),
734 extent.e_len,
735 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
736 "Uninit" : "");
737 continue;
738 }
739
740 if (extent.e_len == 0)
741 continue;
742 else if (extent.e_len == 1)
743 fprintf(f,
744 "%s(%lld%s):%lld",
745 printed ? ", " : "",
746 extent.e_lblk,
747 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
748 "[u]" : "",
749 extent.e_pblk);
750 else
751 fprintf(f,
752 "%s(%lld-%lld%s):%lld-%lld",
753 printed ? ", " : "",
754 extent.e_lblk,
755 extent.e_lblk + (extent.e_len - 1),
756 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
757 "[u]" : "",
758 extent.e_pblk,
759 extent.e_pblk + (extent.e_len - 1));
760 printed = 1;
761 }
762 if (printed)
763 fprintf(f, "\n");
764 ext2fs_extent_free(handle);
765 }
766
767 static void dump_inline_data(FILE *out, const char *prefix, ext2_ino_t inode_num)
768 {
769 errcode_t retval;
770 size_t size;
771
772 retval = ext2fs_inline_data_size(current_fs, inode_num, &size);
773 if (!retval)
774 fprintf(out, "%sSize of inline data: %zu\n", prefix, size);
775 }
776
777 static void dump_inline_symlink(FILE *out, ext2_ino_t inode_num,
778 struct ext2_inode *inode, const char *prefix)
779 {
780 errcode_t retval;
781 char *buf = NULL;
782 size_t size;
783
784 retval = ext2fs_inline_data_size(current_fs, inode_num, &size);
785 if (retval)
786 goto out;
787
788 retval = ext2fs_get_memzero(size + 1, &buf);
789 if (retval)
790 goto out;
791
792 retval = ext2fs_inline_data_get(current_fs, inode_num,
793 inode, buf, &size);
794 if (retval)
795 goto out;
796
797 fprintf(out, "%sFast link dest: \"%.*s\"\n", prefix,
798 (int)size, buf);
799 out:
800 if (buf)
801 ext2fs_free_mem(&buf);
802 if (retval)
803 com_err(__func__, retval, "while dumping link destination");
804 }
805
806 void internal_dump_inode(FILE *out, const char *prefix,
807 ext2_ino_t inode_num, struct ext2_inode *inode,
808 int do_dump_blocks)
809 {
810 const char *i_type;
811 char frag, fsize;
812 int os = current_fs->super->s_creator_os;
813 struct ext2_inode_large *large_inode;
814 int is_large_inode = 0;
815
816 if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
817 is_large_inode = 1;
818 large_inode = (struct ext2_inode_large *) inode;
819
820 if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
821 else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
822 else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
823 else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
824 else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
825 else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
826 else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
827 else i_type = "bad type";
828 fprintf(out, "%sInode: %u Type: %s ", prefix, inode_num, i_type);
829 fprintf(out, "%sMode: 0%03o Flags: 0x%x\n",
830 prefix, inode->i_mode & 07777, inode->i_flags);
831 if (is_large_inode && large_inode->i_extra_isize >= 24) {
832 fprintf(out, "%sGeneration: %u Version: 0x%08x:%08x\n",
833 prefix, inode->i_generation, large_inode->i_version_hi,
834 inode->osd1.linux1.l_i_version);
835 } else {
836 fprintf(out, "%sGeneration: %u Version: 0x%08x\n", prefix,
837 inode->i_generation, inode->osd1.linux1.l_i_version);
838 }
839 fprintf(out, "%sUser: %5d Group: %5d",
840 prefix, inode_uid(*inode), inode_gid(*inode));
841 if (is_large_inode && large_inode->i_extra_isize >= 32)
842 fprintf(out, " Project: %5d", large_inode->i_projid);
843 fputs(" Size: ", out);
844 if (LINUX_S_ISREG(inode->i_mode))
845 fprintf(out, "%llu\n", EXT2_I_SIZE(inode));
846 else
847 fprintf(out, "%d\n", inode->i_size);
848 if (os == EXT2_OS_HURD)
849 fprintf(out,
850 "%sFile ACL: %d Translator: %d\n",
851 prefix,
852 inode->i_file_acl,
853 inode->osd1.hurd1.h_i_translator);
854 else
855 fprintf(out, "%sFile ACL: %llu\n",
856 prefix,
857 inode->i_file_acl | ((long long)
858 (inode->osd2.linux2.l_i_file_acl_high) << 32));
859 if (os != EXT2_OS_HURD)
860 fprintf(out, "%sLinks: %d Blockcount: %llu\n",
861 prefix, inode->i_links_count,
862 (((unsigned long long)
863 inode->osd2.linux2.l_i_blocks_hi << 32)) +
864 inode->i_blocks);
865 else
866 fprintf(out, "%sLinks: %d Blockcount: %u\n",
867 prefix, inode->i_links_count, inode->i_blocks);
868 switch (os) {
869 case EXT2_OS_HURD:
870 frag = inode->osd2.hurd2.h_i_frag;
871 fsize = inode->osd2.hurd2.h_i_fsize;
872 break;
873 default:
874 frag = fsize = 0;
875 }
876 fprintf(out, "%sFragment: Address: %d Number: %d Size: %d\n",
877 prefix, inode->i_faddr, frag, fsize);
878 if (is_large_inode && large_inode->i_extra_isize >= 24) {
879 fprintf(out, "%s ctime: 0x%08x:%08x -- %s", prefix,
880 inode->i_ctime, large_inode->i_ctime_extra,
881 inode_time_to_string(inode->i_ctime,
882 large_inode->i_ctime_extra));
883 fprintf(out, "%s atime: 0x%08x:%08x -- %s", prefix,
884 inode->i_atime, large_inode->i_atime_extra,
885 inode_time_to_string(inode->i_atime,
886 large_inode->i_atime_extra));
887 fprintf(out, "%s mtime: 0x%08x:%08x -- %s", prefix,
888 inode->i_mtime, large_inode->i_mtime_extra,
889 inode_time_to_string(inode->i_mtime,
890 large_inode->i_mtime_extra));
891 fprintf(out, "%scrtime: 0x%08x:%08x -- %s", prefix,
892 large_inode->i_crtime, large_inode->i_crtime_extra,
893 inode_time_to_string(large_inode->i_crtime,
894 large_inode->i_crtime_extra));
895 if (inode->i_dtime)
896 fprintf(out, "%s dtime: 0x%08x:(%08x) -- %s", prefix,
897 large_inode->i_dtime, large_inode->i_ctime_extra,
898 inode_time_to_string(inode->i_dtime,
899 large_inode->i_ctime_extra));
900 } else {
901 fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
902 time_to_string((__s32) inode->i_ctime));
903 fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
904 time_to_string((__s32) inode->i_atime));
905 fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
906 time_to_string((__s32) inode->i_mtime));
907 if (inode->i_dtime)
908 fprintf(out, "%sdtime: 0x%08x -- %s", prefix,
909 inode->i_dtime,
910 time_to_string((__s32) inode->i_dtime));
911 }
912 if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
913 internal_dump_inode_extra(out, prefix, inode_num,
914 (struct ext2_inode_large *) inode);
915 dump_inode_attributes(out, inode_num);
916 if (ext2fs_has_feature_metadata_csum(current_fs->super)) {
917 __u32 crc = inode->i_checksum_lo;
918 if (is_large_inode &&
919 large_inode->i_extra_isize >=
920 (offsetof(struct ext2_inode_large,
921 i_checksum_hi) -
922 EXT2_GOOD_OLD_INODE_SIZE))
923 crc |= ((__u32)large_inode->i_checksum_hi) << 16;
924 fprintf(out, "Inode checksum: 0x%08x\n", crc);
925 }
926
927 if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_is_fast_symlink(inode))
928 fprintf(out, "%sFast link dest: \"%.*s\"\n", prefix,
929 (int)EXT2_I_SIZE(inode), (char *)inode->i_block);
930 else if (LINUX_S_ISLNK(inode->i_mode) &&
931 (inode->i_flags & EXT4_INLINE_DATA_FL))
932 dump_inline_symlink(out, inode_num, inode, prefix);
933 else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
934 int major, minor;
935 const char *devnote;
936
937 if (inode->i_block[0]) {
938 major = (inode->i_block[0] >> 8) & 255;
939 minor = inode->i_block[0] & 255;
940 devnote = "";
941 } else {
942 major = (inode->i_block[1] & 0xfff00) >> 8;
943 minor = ((inode->i_block[1] & 0xff) |
944 ((inode->i_block[1] >> 12) & 0xfff00));
945 devnote = "(New-style) ";
946 }
947 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
948 devnote, major, minor, major, minor);
949 } else if (do_dump_blocks) {
950 if (inode->i_flags & EXT4_EXTENTS_FL)
951 dump_extents(out, prefix, inode_num,
952 DUMP_LEAF_EXTENTS|DUMP_NODE_EXTENTS, 0, 0);
953 else if (inode->i_flags & EXT4_INLINE_DATA_FL)
954 dump_inline_data(out, prefix, inode_num);
955 else
956 dump_blocks(out, prefix, inode_num);
957 }
958 }
959
960 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
961 {
962 FILE *out;
963
964 out = open_pager();
965 internal_dump_inode(out, "", inode_num, inode, 1);
966 close_pager(out);
967 }
968
969 void do_stat(int argc, char *argv[])
970 {
971 ext2_ino_t inode;
972 struct ext2_inode * inode_buf;
973
974 if (check_fs_open(argv[0]))
975 return;
976
977 inode_buf = (struct ext2_inode *)
978 malloc(EXT2_INODE_SIZE(current_fs->super));
979 if (!inode_buf) {
980 fprintf(stderr, "do_stat: can't allocate buffer\n");
981 return;
982 }
983
984 if (common_inode_args_process(argc, argv, &inode, 0)) {
985 free(inode_buf);
986 return;
987 }
988
989 if (debugfs_read_inode_full(inode, inode_buf, argv[0],
990 EXT2_INODE_SIZE(current_fs->super))) {
991 free(inode_buf);
992 return;
993 }
994
995 dump_inode(inode, inode_buf);
996 free(inode_buf);
997 return;
998 }
999
1000 void do_dump_extents(int argc, char **argv)
1001 {
1002 struct ext2_inode inode;
1003 ext2_ino_t ino;
1004 FILE *out;
1005 int c, flags = 0;
1006 int logical_width;
1007 int physical_width;
1008
1009 reset_getopt();
1010 while ((c = getopt(argc, argv, "nl")) != EOF) {
1011 switch (c) {
1012 case 'n':
1013 flags |= DUMP_NODE_EXTENTS;
1014 break;
1015 case 'l':
1016 flags |= DUMP_LEAF_EXTENTS;
1017 break;
1018 }
1019 }
1020
1021 if (argc != optind + 1) {
1022 com_err(0, 0, "Usage: dump_extents [-n] [-l] file");
1023 return;
1024 }
1025
1026 if (flags == 0)
1027 flags = DUMP_NODE_EXTENTS | DUMP_LEAF_EXTENTS;
1028 flags |= DUMP_EXTENT_TABLE;
1029
1030 if (check_fs_open(argv[0]))
1031 return;
1032
1033 ino = string_to_inode(argv[optind]);
1034 if (ino == 0)
1035 return;
1036
1037 if (debugfs_read_inode(ino, &inode, argv[0]))
1038 return;
1039
1040 if ((inode.i_flags & EXT4_EXTENTS_FL) == 0) {
1041 fprintf(stderr, "%s: does not uses extent block maps\n",
1042 argv[optind]);
1043 return;
1044 }
1045
1046 logical_width = int_log10((EXT2_I_SIZE(&inode)+current_fs->blocksize-1)/
1047 current_fs->blocksize) + 1;
1048 if (logical_width < 5)
1049 logical_width = 5;
1050 physical_width = int_log10(ext2fs_blocks_count(current_fs->super)) + 1;
1051 if (physical_width < 5)
1052 physical_width = 5;
1053
1054 out = open_pager();
1055 dump_extents(out, "", ino, flags, logical_width, physical_width);
1056 close_pager(out);
1057 return;
1058 }
1059
1060 static int print_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
1061 blk64_t *blocknr,
1062 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1063 blk64_t ref_block EXT2FS_ATTR((unused)),
1064 int ref_offset EXT2FS_ATTR((unused)),
1065 void *private EXT2FS_ATTR((unused)))
1066 {
1067 printf("%llu ", *blocknr);
1068 return 0;
1069 }
1070
1071 void do_blocks(int argc, char *argv[])
1072 {
1073 ext2_ino_t inode;
1074
1075 if (check_fs_open(argv[0]))
1076 return;
1077
1078 if (common_inode_args_process(argc, argv, &inode, 0)) {
1079 return;
1080 }
1081
1082 ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
1083 print_blocks_proc, NULL);
1084 fputc('\n', stdout);
1085 return;
1086 }
1087
1088 void do_chroot(int argc, char *argv[])
1089 {
1090 ext2_ino_t inode;
1091 int retval;
1092
1093 if (common_inode_args_process(argc, argv, &inode, 0))
1094 return;
1095
1096 retval = ext2fs_check_directory(current_fs, inode);
1097 if (retval) {
1098 com_err(argv[1], retval, 0);
1099 return;
1100 }
1101 root = inode;
1102 }
1103
1104 #ifndef READ_ONLY
1105 void do_clri(int argc, char *argv[])
1106 {
1107 ext2_ino_t inode;
1108 struct ext2_inode inode_buf;
1109
1110 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1111 return;
1112
1113 if (debugfs_read_inode(inode, &inode_buf, argv[0]))
1114 return;
1115 memset(&inode_buf, 0, sizeof(inode_buf));
1116 if (debugfs_write_inode(inode, &inode_buf, argv[0]))
1117 return;
1118 }
1119
1120 void do_freei(int argc, char *argv[])
1121 {
1122 unsigned int len = 1;
1123 int err = 0;
1124 ext2_ino_t inode;
1125
1126 if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1127 CHECK_FS_RW | CHECK_FS_BITMAPS))
1128 return;
1129 if (check_fs_read_write(argv[0]))
1130 return;
1131
1132 inode = string_to_inode(argv[1]);
1133 if (!inode)
1134 return;
1135
1136 if (argc == 3) {
1137 len = parse_ulong(argv[2], argv[0], "length", &err);
1138 if (err)
1139 return;
1140 }
1141
1142 if (len == 1 &&
1143 !ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1144 com_err(argv[0], 0, "Warning: inode already clear");
1145 while (len-- > 0)
1146 ext2fs_unmark_inode_bitmap2(current_fs->inode_map, inode++);
1147 ext2fs_mark_ib_dirty(current_fs);
1148 }
1149
1150 void do_seti(int argc, char *argv[])
1151 {
1152 unsigned int len = 1;
1153 int err = 0;
1154 ext2_ino_t inode;
1155
1156 if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1157 CHECK_FS_RW | CHECK_FS_BITMAPS))
1158 return;
1159 if (check_fs_read_write(argv[0]))
1160 return;
1161
1162 inode = string_to_inode(argv[1]);
1163 if (!inode)
1164 return;
1165
1166 if (argc == 3) {
1167 len = parse_ulong(argv[2], argv[0], "length", &err);
1168 if (err)
1169 return;
1170 }
1171
1172 if ((len == 1) &&
1173 ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1174 com_err(argv[0], 0, "Warning: inode already set");
1175 while (len-- > 0)
1176 ext2fs_mark_inode_bitmap2(current_fs->inode_map, inode++);
1177 ext2fs_mark_ib_dirty(current_fs);
1178 }
1179 #endif /* READ_ONLY */
1180
1181 void do_testi(int argc, char *argv[])
1182 {
1183 ext2_ino_t inode;
1184
1185 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
1186 return;
1187
1188 if (ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1189 printf("Inode %u is marked in use\n", inode);
1190 else
1191 printf("Inode %u is not in use\n", inode);
1192 }
1193
1194 #ifndef READ_ONLY
1195 void do_freeb(int argc, char *argv[])
1196 {
1197 blk64_t block;
1198 blk64_t count = 1;
1199
1200 if (common_block_args_process(argc, argv, &block, &count))
1201 return;
1202 if (check_fs_read_write(argv[0]))
1203 return;
1204 while (count-- > 0) {
1205 if (!ext2fs_test_block_bitmap2(current_fs->block_map,block))
1206 com_err(argv[0], 0, "Warning: block %llu already clear",
1207 block);
1208 ext2fs_unmark_block_bitmap2(current_fs->block_map,block);
1209 block++;
1210 }
1211 ext2fs_mark_bb_dirty(current_fs);
1212 }
1213
1214 void do_setb(int argc, char *argv[])
1215 {
1216 blk64_t block;
1217 blk64_t count = 1;
1218
1219 if (common_block_args_process(argc, argv, &block, &count))
1220 return;
1221 if (check_fs_read_write(argv[0]))
1222 return;
1223 while (count-- > 0) {
1224 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1225 com_err(argv[0], 0, "Warning: block %llu already set",
1226 block);
1227 ext2fs_mark_block_bitmap2(current_fs->block_map,block);
1228 block++;
1229 }
1230 ext2fs_mark_bb_dirty(current_fs);
1231 }
1232 #endif /* READ_ONLY */
1233
1234 void do_testb(int argc, char *argv[])
1235 {
1236 blk64_t block;
1237 blk64_t count = 1;
1238
1239 if (common_block_args_process(argc, argv, &block, &count))
1240 return;
1241 while (count-- > 0) {
1242 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1243 printf("Block %llu marked in use\n", block);
1244 else
1245 printf("Block %llu not in use\n", block);
1246 block++;
1247 }
1248 }
1249
1250 #ifndef READ_ONLY
1251 static void modify_u8(char *com, const char *prompt,
1252 const char *format, __u8 *val)
1253 {
1254 char buf[200];
1255 unsigned long v;
1256 char *tmp;
1257
1258 sprintf(buf, format, *val);
1259 printf("%30s [%s] ", prompt, buf);
1260 if (!fgets(buf, sizeof(buf), stdin))
1261 return;
1262 if (buf[strlen (buf) - 1] == '\n')
1263 buf[strlen (buf) - 1] = '\0';
1264 if (!buf[0])
1265 return;
1266 v = strtoul(buf, &tmp, 0);
1267 if (*tmp)
1268 com_err(com, 0, "Bad value - %s", buf);
1269 else
1270 *val = v;
1271 }
1272
1273 static void modify_u16(char *com, const char *prompt,
1274 const char *format, __u16 *val)
1275 {
1276 char buf[200];
1277 unsigned long v;
1278 char *tmp;
1279
1280 sprintf(buf, format, *val);
1281 printf("%30s [%s] ", prompt, buf);
1282 if (!fgets(buf, sizeof(buf), stdin))
1283 return;
1284 if (buf[strlen (buf) - 1] == '\n')
1285 buf[strlen (buf) - 1] = '\0';
1286 if (!buf[0])
1287 return;
1288 v = strtoul(buf, &tmp, 0);
1289 if (*tmp)
1290 com_err(com, 0, "Bad value - %s", buf);
1291 else
1292 *val = v;
1293 }
1294
1295 static void modify_u32(char *com, const char *prompt,
1296 const char *format, __u32 *val)
1297 {
1298 char buf[200];
1299 unsigned long v;
1300 char *tmp;
1301
1302 sprintf(buf, format, *val);
1303 printf("%30s [%s] ", prompt, buf);
1304 if (!fgets(buf, sizeof(buf), stdin))
1305 return;
1306 if (buf[strlen (buf) - 1] == '\n')
1307 buf[strlen (buf) - 1] = '\0';
1308 if (!buf[0])
1309 return;
1310 v = strtoul(buf, &tmp, 0);
1311 if (*tmp)
1312 com_err(com, 0, "Bad value - %s", buf);
1313 else
1314 *val = v;
1315 }
1316
1317
1318 void do_modify_inode(int argc, char *argv[])
1319 {
1320 struct ext2_inode inode;
1321 ext2_ino_t inode_num;
1322 int i;
1323 unsigned char *frag, *fsize;
1324 char buf[80];
1325 int os;
1326 const char *hex_format = "0x%x";
1327 const char *octal_format = "0%o";
1328 const char *decimal_format = "%d";
1329 const char *unsignedlong_format = "%lu";
1330
1331 if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1332 return;
1333
1334 os = current_fs->super->s_creator_os;
1335
1336 if (debugfs_read_inode(inode_num, &inode, argv[1]))
1337 return;
1338
1339 modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
1340 modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
1341 modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
1342 modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
1343 modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
1344 modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
1345 modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
1346 modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
1347 modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
1348 if (os == EXT2_OS_LINUX)
1349 modify_u16(argv[0], "Block count high", unsignedlong_format,
1350 &inode.osd2.linux2.l_i_blocks_hi);
1351 modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
1352 modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
1353 modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
1354 #if 0
1355 modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
1356 #endif
1357 modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
1358
1359 modify_u32(argv[0], "High 32bits of size", decimal_format,
1360 &inode.i_size_high);
1361
1362 if (os == EXT2_OS_HURD)
1363 modify_u32(argv[0], "Translator Block",
1364 decimal_format, &inode.osd1.hurd1.h_i_translator);
1365
1366 modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
1367 switch (os) {
1368 case EXT2_OS_HURD:
1369 frag = &inode.osd2.hurd2.h_i_frag;
1370 fsize = &inode.osd2.hurd2.h_i_fsize;
1371 break;
1372 default:
1373 frag = fsize = 0;
1374 }
1375 if (frag)
1376 modify_u8(argv[0], "Fragment number", decimal_format, frag);
1377 if (fsize)
1378 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
1379
1380 for (i=0; i < EXT2_NDIR_BLOCKS; i++) {
1381 sprintf(buf, "Direct Block #%d", i);
1382 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
1383 }
1384 modify_u32(argv[0], "Indirect Block", decimal_format,
1385 &inode.i_block[EXT2_IND_BLOCK]);
1386 modify_u32(argv[0], "Double Indirect Block", decimal_format,
1387 &inode.i_block[EXT2_DIND_BLOCK]);
1388 modify_u32(argv[0], "Triple Indirect Block", decimal_format,
1389 &inode.i_block[EXT2_TIND_BLOCK]);
1390 if (debugfs_write_inode(inode_num, &inode, argv[1]))
1391 return;
1392 }
1393 #endif /* READ_ONLY */
1394
1395 void do_change_working_dir(int argc, char *argv[])
1396 {
1397 ext2_ino_t inode;
1398 int retval;
1399
1400 if (common_inode_args_process(argc, argv, &inode, 0))
1401 return;
1402
1403 retval = ext2fs_check_directory(current_fs, inode);
1404 if (retval) {
1405 com_err(argv[1], retval, 0);
1406 return;
1407 }
1408 cwd = inode;
1409 return;
1410 }
1411
1412 void do_print_working_directory(int argc, char *argv[])
1413 {
1414 int retval;
1415 char *pathname = NULL;
1416
1417 if (common_args_process(argc, argv, 1, 1,
1418 "print_working_directory", "", 0))
1419 return;
1420
1421 retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
1422 if (retval) {
1423 com_err(argv[0], retval,
1424 "while trying to get pathname of cwd");
1425 }
1426 printf("[pwd] INODE: %6u PATH: %s\n",
1427 cwd, pathname ? pathname : "NULL");
1428 if (pathname) {
1429 free(pathname);
1430 pathname = NULL;
1431 }
1432 retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
1433 if (retval) {
1434 com_err(argv[0], retval,
1435 "while trying to get pathname of root");
1436 }
1437 printf("[root] INODE: %6u PATH: %s\n",
1438 root, pathname ? pathname : "NULL");
1439 if (pathname) {
1440 free(pathname);
1441 pathname = NULL;
1442 }
1443 return;
1444 }
1445
1446 #ifndef READ_ONLY
1447 static void make_link(char *sourcename, char *destname)
1448 {
1449 ext2_ino_t ino;
1450 struct ext2_inode inode;
1451 int retval;
1452 ext2_ino_t dir;
1453 char *dest, *cp, *base_name;
1454
1455 /*
1456 * Get the source inode
1457 */
1458 ino = string_to_inode(sourcename);
1459 if (!ino)
1460 return;
1461 base_name = strrchr(sourcename, '/');
1462 if (base_name)
1463 base_name++;
1464 else
1465 base_name = sourcename;
1466 /*
1467 * Figure out the destination. First see if it exists and is
1468 * a directory.
1469 */
1470 if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1471 dest = base_name;
1472 else {
1473 /*
1474 * OK, it doesn't exist. See if it is
1475 * '<dir>/basename' or 'basename'
1476 */
1477 cp = strrchr(destname, '/');
1478 if (cp) {
1479 *cp = 0;
1480 dir = string_to_inode(destname);
1481 if (!dir)
1482 return;
1483 dest = cp+1;
1484 } else {
1485 dir = cwd;
1486 dest = destname;
1487 }
1488 }
1489
1490 if (debugfs_read_inode(ino, &inode, sourcename))
1491 return;
1492
1493 retval = ext2fs_link(current_fs, dir, dest, ino,
1494 ext2_file_type(inode.i_mode));
1495 if (retval)
1496 com_err("make_link", retval, 0);
1497 return;
1498 }
1499
1500
1501 void do_link(int argc, char *argv[])
1502 {
1503 if (common_args_process(argc, argv, 3, 3, "link",
1504 "<source file> <dest_name>", CHECK_FS_RW))
1505 return;
1506
1507 make_link(argv[1], argv[2]);
1508 }
1509
1510 static int mark_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1511 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1512 blk64_t ref_block EXT2FS_ATTR((unused)),
1513 int ref_offset EXT2FS_ATTR((unused)),
1514 void *private EXT2FS_ATTR((unused)))
1515 {
1516 blk64_t block;
1517
1518 block = *blocknr;
1519 ext2fs_block_alloc_stats2(fs, block, +1);
1520 return 0;
1521 }
1522
1523 void do_undel(int argc, char *argv[])
1524 {
1525 ext2_ino_t ino;
1526 struct ext2_inode inode;
1527
1528 if (common_args_process(argc, argv, 2, 3, "undelete",
1529 "<inode_num> [dest_name]",
1530 CHECK_FS_RW | CHECK_FS_BITMAPS))
1531 return;
1532
1533 ino = string_to_inode(argv[1]);
1534 if (!ino)
1535 return;
1536
1537 if (debugfs_read_inode(ino, &inode, argv[1]))
1538 return;
1539
1540 if (ext2fs_test_inode_bitmap2(current_fs->inode_map, ino)) {
1541 com_err(argv[1], 0, "Inode is not marked as deleted");
1542 return;
1543 }
1544
1545 /*
1546 * XXX this function doesn't handle changing the links count on the
1547 * parent directory when undeleting a directory.
1548 */
1549 inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1550 inode.i_dtime = 0;
1551
1552 if (debugfs_write_inode(ino, &inode, argv[0]))
1553 return;
1554
1555 ext2fs_block_iterate3(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL,
1556 mark_blocks_proc, NULL);
1557
1558 ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1559
1560 if (argc > 2)
1561 make_link(argv[1], argv[2]);
1562 }
1563
1564 static void unlink_file_by_name(char *filename)
1565 {
1566 int retval;
1567 ext2_ino_t dir;
1568 char *base_name;
1569
1570 base_name = strrchr(filename, '/');
1571 if (base_name) {
1572 *base_name++ = '\0';
1573 dir = string_to_inode(filename);
1574 if (!dir)
1575 return;
1576 } else {
1577 dir = cwd;
1578 base_name = filename;
1579 }
1580 retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
1581 if (retval)
1582 com_err("unlink_file_by_name", retval, 0);
1583 return;
1584 }
1585
1586 void do_unlink(int argc, char *argv[])
1587 {
1588 if (common_args_process(argc, argv, 2, 2, "link",
1589 "<pathname>", CHECK_FS_RW))
1590 return;
1591
1592 unlink_file_by_name(argv[1]);
1593 }
1594
1595 void do_copy_inode(int argc, char *argv[])
1596 {
1597 ext2_ino_t src_ino, dest_ino;
1598 unsigned char buf[4096];
1599
1600 if (common_args_process(argc, argv, 3, 3, "copy_inode",
1601 "<source file> <dest_name>", CHECK_FS_RW))
1602 return;
1603
1604 src_ino = string_to_inode(argv[1]);
1605 if (!src_ino)
1606 return;
1607
1608 dest_ino = string_to_inode(argv[2]);
1609 if (!dest_ino)
1610 return;
1611
1612 if (debugfs_read_inode_full(src_ino, (struct ext2_inode *) buf,
1613 argv[0], sizeof(buf)))
1614 return;
1615
1616 if (debugfs_write_inode_full(dest_ino, (struct ext2_inode *) buf,
1617 argv[0], sizeof(buf)))
1618 return;
1619 }
1620
1621 #endif /* READ_ONLY */
1622
1623 void do_find_free_block(int argc, char *argv[])
1624 {
1625 blk64_t free_blk, goal, first_free = 0;
1626 int count;
1627 errcode_t retval;
1628 char *tmp;
1629
1630 if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1631 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1632 return;
1633 }
1634 if (check_fs_open(argv[0]))
1635 return;
1636
1637 if (argc > 1) {
1638 count = strtol(argv[1],&tmp,0);
1639 if (*tmp) {
1640 com_err(argv[0], 0, "Bad count - %s", argv[1]);
1641 return;
1642 }
1643 } else
1644 count = 1;
1645
1646 if (argc > 2) {
1647 goal = strtol(argv[2], &tmp, 0);
1648 if (*tmp) {
1649 com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1650 return;
1651 }
1652 }
1653 else
1654 goal = current_fs->super->s_first_data_block;
1655
1656 printf("Free blocks found: ");
1657 free_blk = goal - 1;
1658 while (count-- > 0) {
1659 retval = ext2fs_new_block2(current_fs, free_blk + 1, 0,
1660 &free_blk);
1661 if (first_free) {
1662 if (first_free == free_blk)
1663 break;
1664 } else
1665 first_free = free_blk;
1666 if (retval) {
1667 com_err("ext2fs_new_block", retval, 0);
1668 return;
1669 } else
1670 printf("%llu ", free_blk);
1671 }
1672 printf("\n");
1673 }
1674
1675 void do_find_free_inode(int argc, char *argv[])
1676 {
1677 ext2_ino_t free_inode, dir;
1678 int mode;
1679 int retval;
1680 char *tmp;
1681
1682 if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1683 com_err(argv[0], 0, "Usage: find_free_inode [dir [mode]]");
1684 return;
1685 }
1686 if (check_fs_open(argv[0]))
1687 return;
1688
1689 if (argc > 1) {
1690 dir = strtol(argv[1], &tmp, 0);
1691 if (*tmp) {
1692 com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1693 return;
1694 }
1695 }
1696 else
1697 dir = root;
1698 if (argc > 2) {
1699 mode = strtol(argv[2], &tmp, 0);
1700 if (*tmp) {
1701 com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1702 return;
1703 }
1704 } else
1705 mode = 010755;
1706
1707 retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1708 if (retval)
1709 com_err("ext2fs_new_inode", retval, 0);
1710 else
1711 printf("Free inode found: %u\n", free_inode);
1712 }
1713
1714 #ifndef READ_ONLY
1715 void do_write(int argc, char *argv[])
1716 {
1717 errcode_t retval;
1718
1719 if (common_args_process(argc, argv, 3, 3, "write",
1720 "<native file> <new file>", CHECK_FS_RW))
1721 return;
1722
1723 retval = do_write_internal(current_fs, cwd, argv[1], argv[2], root);
1724 if (retval)
1725 com_err(argv[0], retval, 0);
1726 }
1727
1728 void do_mknod(int argc, char *argv[])
1729 {
1730 unsigned long major, minor;
1731 errcode_t retval;
1732 int nr;
1733 struct stat st;
1734
1735 if (check_fs_open(argv[0]))
1736 return;
1737 if (argc < 3 || argv[2][1]) {
1738 usage:
1739 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1740 return;
1741 }
1742
1743 minor = major = 0;
1744 switch (argv[2][0]) {
1745 case 'p':
1746 st.st_mode = S_IFIFO;
1747 nr = 3;
1748 break;
1749 case 'c':
1750 st.st_mode = S_IFCHR;
1751 nr = 5;
1752 break;
1753 case 'b':
1754 st.st_mode = S_IFBLK;
1755 nr = 5;
1756 break;
1757 default:
1758 nr = 0;
1759 }
1760
1761 if (nr == 5) {
1762 major = strtoul(argv[3], argv+3, 0);
1763 minor = strtoul(argv[4], argv+4, 0);
1764 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1765 nr = 0;
1766 }
1767
1768 if (argc != nr)
1769 goto usage;
1770
1771 st.st_rdev = makedev(major, minor);
1772 retval = do_mknod_internal(current_fs, cwd, argv[1], &st);
1773 if (retval)
1774 com_err(argv[0], retval, 0);
1775 }
1776
1777 void do_mkdir(int argc, char *argv[])
1778 {
1779 errcode_t retval;
1780
1781 if (common_args_process(argc, argv, 2, 2, "mkdir",
1782 "<filename>", CHECK_FS_RW))
1783 return;
1784
1785 retval = do_mkdir_internal(current_fs, cwd, argv[1], root);
1786 if (retval)
1787 com_err(argv[0], retval, 0);
1788
1789 }
1790
1791 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1792 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1793 blk64_t ref_block EXT2FS_ATTR((unused)),
1794 int ref_offset EXT2FS_ATTR((unused)),
1795 void *private)
1796 {
1797 blk64_t block = *blocknr;
1798 blk64_t *last_cluster = (blk64_t *)private;
1799 blk64_t cluster = EXT2FS_B2C(fs, block);
1800
1801 if (cluster == *last_cluster)
1802 return 0;
1803
1804 *last_cluster = cluster;
1805
1806 ext2fs_block_alloc_stats2(fs, block, -1);
1807 return 0;
1808 }
1809
1810 static void kill_file_by_inode(ext2_ino_t inode)
1811 {
1812 struct ext2_inode inode_buf;
1813
1814 if (debugfs_read_inode(inode, &inode_buf, 0))
1815 return;
1816 inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1817 if (debugfs_write_inode(inode, &inode_buf, 0))
1818 return;
1819 if (ext2fs_inode_has_valid_blocks2(current_fs, &inode_buf)) {
1820 blk64_t last_cluster = 0;
1821 ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY,
1822 NULL, release_blocks_proc, &last_cluster);
1823 }
1824 printf("\n");
1825 ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1826 LINUX_S_ISDIR(inode_buf.i_mode));
1827 }
1828
1829
1830 void do_kill_file(int argc, char *argv[])
1831 {
1832 ext2_ino_t inode_num;
1833
1834 if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1835 return;
1836
1837 kill_file_by_inode(inode_num);
1838 }
1839
1840 void do_rm(int argc, char *argv[])
1841 {
1842 int retval;
1843 ext2_ino_t inode_num;
1844 struct ext2_inode inode;
1845
1846 if (common_args_process(argc, argv, 2, 2, "rm",
1847 "<filename>", CHECK_FS_RW))
1848 return;
1849
1850 retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1851 if (retval) {
1852 com_err(argv[0], retval, "while trying to resolve filename");
1853 return;
1854 }
1855
1856 if (debugfs_read_inode(inode_num, &inode, argv[0]))
1857 return;
1858
1859 if (LINUX_S_ISDIR(inode.i_mode)) {
1860 com_err(argv[0], 0, "file is a directory");
1861 return;
1862 }
1863
1864 --inode.i_links_count;
1865 if (debugfs_write_inode(inode_num, &inode, argv[0]))
1866 return;
1867
1868 unlink_file_by_name(argv[1]);
1869 if (inode.i_links_count == 0)
1870 kill_file_by_inode(inode_num);
1871 }
1872
1873 struct rd_struct {
1874 ext2_ino_t parent;
1875 int empty;
1876 };
1877
1878 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1879 int entry EXT2FS_ATTR((unused)),
1880 struct ext2_dir_entry *dirent,
1881 int offset EXT2FS_ATTR((unused)),
1882 int blocksize EXT2FS_ATTR((unused)),
1883 char *buf EXT2FS_ATTR((unused)),
1884 void *private)
1885 {
1886 struct rd_struct *rds = (struct rd_struct *) private;
1887
1888 if (dirent->inode == 0)
1889 return 0;
1890 if ((ext2fs_dirent_name_len(dirent) == 1) && (dirent->name[0] == '.'))
1891 return 0;
1892 if ((ext2fs_dirent_name_len(dirent) == 2) && (dirent->name[0] == '.') &&
1893 (dirent->name[1] == '.')) {
1894 rds->parent = dirent->inode;
1895 return 0;
1896 }
1897 rds->empty = 0;
1898 return 0;
1899 }
1900
1901 void do_rmdir(int argc, char *argv[])
1902 {
1903 int retval;
1904 ext2_ino_t inode_num;
1905 struct ext2_inode inode;
1906 struct rd_struct rds;
1907
1908 if (common_args_process(argc, argv, 2, 2, "rmdir",
1909 "<filename>", CHECK_FS_RW))
1910 return;
1911
1912 retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1913 if (retval) {
1914 com_err(argv[0], retval, "while trying to resolve filename");
1915 return;
1916 }
1917
1918 if (debugfs_read_inode(inode_num, &inode, argv[0]))
1919 return;
1920
1921 if (!LINUX_S_ISDIR(inode.i_mode)) {
1922 com_err(argv[0], 0, "file is not a directory");
1923 return;
1924 }
1925
1926 rds.parent = 0;
1927 rds.empty = 1;
1928
1929 retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1930 0, rmdir_proc, &rds);
1931 if (retval) {
1932 com_err(argv[0], retval, "while iterating over directory");
1933 return;
1934 }
1935 if (rds.empty == 0) {
1936 com_err(argv[0], 0, "directory not empty");
1937 return;
1938 }
1939
1940 inode.i_links_count = 0;
1941 if (debugfs_write_inode(inode_num, &inode, argv[0]))
1942 return;
1943
1944 unlink_file_by_name(argv[1]);
1945 kill_file_by_inode(inode_num);
1946
1947 if (rds.parent) {
1948 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1949 return;
1950 if (inode.i_links_count > 1)
1951 inode.i_links_count--;
1952 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1953 return;
1954 }
1955 }
1956 #endif /* READ_ONLY */
1957
1958 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1959 char *argv[] EXT2FS_ATTR((unused)))
1960 {
1961 if (current_fs)
1962 printf("Open mode: read-%s\n",
1963 current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1964 printf("Filesystem in use: %s\n",
1965 current_fs ? current_fs->device_name : "--none--");
1966 }
1967
1968 #ifndef READ_ONLY
1969 void do_expand_dir(int argc, char *argv[])
1970 {
1971 ext2_ino_t inode;
1972 int retval;
1973
1974 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1975 return;
1976
1977 retval = ext2fs_expand_dir(current_fs, inode);
1978 if (retval)
1979 com_err("ext2fs_expand_dir", retval, 0);
1980 return;
1981 }
1982
1983 void do_features(int argc, char *argv[])
1984 {
1985 int i;
1986
1987 if (check_fs_open(argv[0]))
1988 return;
1989
1990 if ((argc != 1) && check_fs_read_write(argv[0]))
1991 return;
1992 for (i=1; i < argc; i++) {
1993 if (e2p_edit_feature(argv[i],
1994 &current_fs->super->s_feature_compat, 0))
1995 com_err(argv[0], 0, "Unknown feature: %s\n",
1996 argv[i]);
1997 else
1998 ext2fs_mark_super_dirty(current_fs);
1999 }
2000 print_features(current_fs->super, stdout);
2001 }
2002 #endif /* READ_ONLY */
2003
2004 void do_bmap(int argc, char *argv[])
2005 {
2006 ext2_ino_t ino;
2007 blk64_t blk, pblk = 0;
2008 int c, err, flags = 0, ret_flags = 0;
2009 errcode_t errcode;
2010
2011 if (check_fs_open(argv[0]))
2012 return;
2013
2014 reset_getopt();
2015 while ((c = getopt (argc, argv, "a")) != EOF) {
2016 switch (c) {
2017 case 'a':
2018 flags |= BMAP_ALLOC;
2019 break;
2020 default:
2021 goto print_usage;
2022 }
2023 }
2024
2025 if (argc <= optind+1) {
2026 print_usage:
2027 com_err(0, 0,
2028 "Usage: bmap [-a] <file> logical_blk [physical_blk]");
2029 return;
2030 }
2031
2032 ino = string_to_inode(argv[optind++]);
2033 if (!ino)
2034 return;
2035 err = strtoblk(argv[0], argv[optind++], "logical block", &blk);
2036 if (err)
2037 return;
2038
2039 if (argc > optind+1)
2040 goto print_usage;
2041
2042 if (argc == optind+1) {
2043 err = strtoblk(argv[0], argv[optind++],
2044 "physical block", &pblk);
2045 if (err)
2046 return;
2047 if (flags & BMAP_ALLOC) {
2048 com_err(0, 0, "Can't set and allocate a block");
2049 return;
2050 }
2051 flags |= BMAP_SET;
2052 }
2053
2054 errcode = ext2fs_bmap2(current_fs, ino, 0, 0, flags, blk,
2055 &ret_flags, &pblk);
2056 if (errcode) {
2057 com_err(argv[0], errcode,
2058 "while mapping logical block %llu\n", blk);
2059 return;
2060 }
2061 printf("%llu", pblk);
2062 if (ret_flags & BMAP_RET_UNINIT)
2063 fputs(" (uninit)", stdout);
2064 fputc('\n', stdout);
2065 }
2066
2067 void do_imap(int argc, char *argv[])
2068 {
2069 ext2_ino_t ino;
2070 unsigned long group, block, block_nr, offset;
2071
2072 if (common_args_process(argc, argv, 2, 2, argv[0],
2073 "<file>", 0))
2074 return;
2075 ino = string_to_inode(argv[1]);
2076 if (!ino)
2077 return;
2078
2079 group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
2080 offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
2081 EXT2_INODE_SIZE(current_fs->super);
2082 block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
2083 if (!ext2fs_inode_table_loc(current_fs, (unsigned)group)) {
2084 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
2085 group);
2086 return;
2087 }
2088 block_nr = ext2fs_inode_table_loc(current_fs, (unsigned)group) +
2089 block;
2090 offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
2091
2092 printf("Inode %d is part of block group %lu\n"
2093 "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
2094 block_nr, offset);
2095
2096 }
2097
2098 void do_idump(int argc, char *argv[])
2099 {
2100 struct ext2_inode_large *inode;
2101 ext2_ino_t ino;
2102 unsigned char *buf;
2103 errcode_t err;
2104 unsigned int isize, size, offset = 0;
2105 int c, mode = 0;
2106
2107 reset_getopt();
2108 while ((c = getopt (argc, argv, "bex")) != EOF) {
2109 if (mode || c == '?') {
2110 print_usage:
2111 com_err(argv[0], 0,
2112 "Usage: inode_dump [-b]|[-e] <file>");
2113 return;
2114 }
2115 mode = c;
2116 }
2117 if (optind != argc-1)
2118 return;
2119
2120 if (check_fs_open(argv[0]))
2121 return;
2122
2123 ino = string_to_inode(argv[optind]);
2124 if (!ino)
2125 return;
2126
2127 isize = EXT2_INODE_SIZE(current_fs->super);
2128 err = ext2fs_get_mem(isize, &buf);
2129 if (err) {
2130 com_err(argv[0], err, "while allocating memory");
2131 return;
2132 }
2133
2134 err = ext2fs_read_inode_full(current_fs, ino,
2135 (struct ext2_inode *)buf, isize);
2136 if (err) {
2137 com_err(argv[0], err, "while reading inode %u", ino);
2138 goto err;
2139 }
2140
2141 inode = (struct ext2_inode_large *) buf;
2142 size = isize;
2143 switch (mode) {
2144 case 'b':
2145 offset = ((char *) (&inode->i_block)) - ((char *) buf);
2146 size = sizeof(inode->i_block);
2147 break;
2148 case 'x':
2149 case 'e':
2150 if (size <= EXT2_GOOD_OLD_INODE_SIZE) {
2151 no_extra_space:
2152 com_err(argv[0], 0, "No extra space in inode");
2153 goto err;
2154 }
2155 offset = EXT2_GOOD_OLD_INODE_SIZE + inode->i_extra_isize;
2156 if (offset > size)
2157 goto err;
2158 size -= offset;
2159 break;
2160 }
2161 if (mode == 'x')
2162 raw_inode_xattr_dump(stdout, buf + offset, size);
2163 else
2164 do_byte_hexdump(stdout, buf + offset, size);
2165 err:
2166 ext2fs_free_mem(&buf);
2167 }
2168
2169 #ifndef READ_ONLY
2170 void do_set_current_time(int argc, char *argv[])
2171 {
2172 __s64 now;
2173
2174 if (common_args_process(argc, argv, 2, 2, argv[0],
2175 "<time>", 0))
2176 return;
2177
2178 now = string_to_time(argv[1]);
2179 if (now == -1) {
2180 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
2181 argv[1]);
2182 return;
2183
2184 } else {
2185 printf("Setting current time to %s\n", time_to_string(now));
2186 current_fs->now = now;
2187 }
2188 }
2189 #endif /* READ_ONLY */
2190
2191 static int find_supp_feature(__u32 *supp, int feature_type, char *name)
2192 {
2193 int compat, bit, ret;
2194 unsigned int feature_mask;
2195
2196 if (name) {
2197 if (feature_type == E2P_FS_FEATURE)
2198 ret = e2p_string2feature(name, &compat, &feature_mask);
2199 else
2200 ret = e2p_jrnl_string2feature(name, &compat,
2201 &feature_mask);
2202 if (ret)
2203 return ret;
2204
2205 if (!(supp[compat] & feature_mask))
2206 return 1;
2207 } else {
2208 for (compat = 0; compat < 3; compat++) {
2209 for (bit = 0, feature_mask = 1; bit < 32;
2210 bit++, feature_mask <<= 1) {
2211 if (supp[compat] & feature_mask) {
2212 if (feature_type == E2P_FS_FEATURE)
2213 fprintf(stdout, " %s",
2214 e2p_feature2string(compat,
2215 feature_mask));
2216 else
2217 fprintf(stdout, " %s",
2218 e2p_jrnl_feature2string(compat,
2219 feature_mask));
2220 }
2221 }
2222 }
2223 fprintf(stdout, "\n");
2224 }
2225
2226 return 0;
2227 }
2228
2229 void do_supported_features(int argc, char *argv[])
2230 {
2231 int ret;
2232 __u32 supp[3] = { EXT2_LIB_FEATURE_COMPAT_SUPP,
2233 EXT2_LIB_FEATURE_INCOMPAT_SUPP,
2234 EXT2_LIB_FEATURE_RO_COMPAT_SUPP };
2235 __u32 jrnl_supp[3] = { JFS_KNOWN_COMPAT_FEATURES,
2236 JFS_KNOWN_INCOMPAT_FEATURES,
2237 JFS_KNOWN_ROCOMPAT_FEATURES };
2238
2239 if (argc > 1) {
2240 ret = find_supp_feature(supp, E2P_FS_FEATURE, argv[1]);
2241 if (ret) {
2242 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE,
2243 argv[1]);
2244 }
2245 if (ret)
2246 com_err(argv[0], 0, "Unknown feature: %s\n", argv[1]);
2247 else
2248 fprintf(stdout, "Supported feature: %s\n", argv[1]);
2249 } else {
2250 fprintf(stdout, "Supported features:");
2251 ret = find_supp_feature(supp, E2P_FS_FEATURE, NULL);
2252 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE, NULL);
2253 }
2254 }
2255
2256 #ifndef READ_ONLY
2257 void do_punch(int argc, char *argv[])
2258 {
2259 ext2_ino_t ino;
2260 blk64_t start, end;
2261 int err;
2262 errcode_t errcode;
2263
2264 if (common_args_process(argc, argv, 3, 4, argv[0],
2265 "<file> start_blk [end_blk]",
2266 CHECK_FS_RW | CHECK_FS_BITMAPS))
2267 return;
2268
2269 ino = string_to_inode(argv[1]);
2270 if (!ino)
2271 return;
2272 err = strtoblk(argv[0], argv[2], "logical block", &start);
2273 if (err)
2274 return;
2275 if (argc == 4) {
2276 err = strtoblk(argv[0], argv[3], "logical block", &end);
2277 if (err)
2278 return;
2279 } else
2280 end = ~0;
2281
2282 errcode = ext2fs_punch(current_fs, ino, 0, 0, start, end);
2283
2284 if (errcode) {
2285 com_err(argv[0], errcode,
2286 "while truncating inode %u from %llu to %llu\n", ino,
2287 (unsigned long long) start, (unsigned long long) end);
2288 return;
2289 }
2290 }
2291
2292 void do_fallocate(int argc, char *argv[])
2293 {
2294 ext2_ino_t ino;
2295 blk64_t start, end;
2296 int err;
2297 errcode_t errcode;
2298
2299 if (common_args_process(argc, argv, 3, 4, argv[0],
2300 "<file> start_blk [end_blk]",
2301 CHECK_FS_RW | CHECK_FS_BITMAPS))
2302 return;
2303
2304 ino = string_to_inode(argv[1]);
2305 if (!ino)
2306 return;
2307 err = strtoblk(argv[0], argv[2], "logical block", &start);
2308 if (err)
2309 return;
2310 if (argc == 4) {
2311 err = strtoblk(argv[0], argv[3], "logical block", &end);
2312 if (err)
2313 return;
2314 } else
2315 end = ~0;
2316
2317 errcode = ext2fs_fallocate(current_fs, EXT2_FALLOCATE_INIT_BEYOND_EOF,
2318 ino, NULL, ~0ULL, start, end - start + 1);
2319
2320 if (errcode) {
2321 com_err(argv[0], errcode,
2322 "while fallocating inode %u from %llu to %llu\n", ino,
2323 (unsigned long long) start, (unsigned long long) end);
2324 return;
2325 }
2326 }
2327 #endif /* READ_ONLY */
2328
2329 void do_symlink(int argc, char *argv[])
2330 {
2331 errcode_t retval;
2332
2333 if (common_args_process(argc, argv, 3, 3, "symlink",
2334 "<filename> <target>", CHECK_FS_RW))
2335 return;
2336
2337 retval = do_symlink_internal(current_fs, cwd, argv[1], argv[2], root);
2338 if (retval)
2339 com_err(argv[0], retval, 0);
2340
2341 }
2342
2343 #if CONFIG_MMP
2344 void do_dump_mmp(int argc EXT2FS_ATTR((unused)), char *argv[])
2345 {
2346 struct mmp_struct *mmp_s;
2347 unsigned long long mmp_block;
2348 time_t t;
2349 errcode_t retval = 0;
2350
2351 if (check_fs_open(argv[0]))
2352 return;
2353
2354 if (argc > 1) {
2355 char *end = NULL;
2356 mmp_block = strtoull(argv[1], &end, 0);
2357 if (end == argv[0] || mmp_block == 0) {
2358 fprintf(stderr, "%s: invalid MMP block '%s' given\n",
2359 argv[0], argv[1]);
2360 return;
2361 }
2362 } else {
2363 mmp_block = current_fs->super->s_mmp_block;
2364 }
2365
2366 if (mmp_block == 0) {
2367 fprintf(stderr, "%s: MMP: not active on this filesystem.\n",
2368 argv[0]);
2369 return;
2370 }
2371
2372 if (current_fs->mmp_buf == NULL) {
2373 retval = ext2fs_get_mem(current_fs->blocksize,
2374 &current_fs->mmp_buf);
2375 if (retval) {
2376 com_err(argv[0], retval, "allocating MMP buffer.\n");
2377 return;
2378 }
2379 }
2380
2381 mmp_s = current_fs->mmp_buf;
2382
2383 retval = ext2fs_mmp_read(current_fs, mmp_block, current_fs->mmp_buf);
2384 if (retval) {
2385 com_err(argv[0], retval, "reading MMP block %llu.\n",
2386 mmp_block);
2387 return;
2388 }
2389
2390 t = mmp_s->mmp_time;
2391 fprintf(stdout, "block_number: %llu\n", current_fs->super->s_mmp_block);
2392 fprintf(stdout, "update_interval: %d\n",
2393 current_fs->super->s_mmp_update_interval);
2394 fprintf(stdout, "check_interval: %d\n", mmp_s->mmp_check_interval);
2395 fprintf(stdout, "sequence: %08x\n", mmp_s->mmp_seq);
2396 fprintf(stdout, "time: %lld -- %s", mmp_s->mmp_time, ctime(&t));
2397 fprintf(stdout, "node_name: %s\n", mmp_s->mmp_nodename);
2398 fprintf(stdout, "device_name: %s\n", mmp_s->mmp_bdevname);
2399 fprintf(stdout, "magic: 0x%x\n", mmp_s->mmp_magic);
2400 fprintf(stdout, "checksum: 0x%08x\n", mmp_s->mmp_checksum);
2401 }
2402 #else
2403 void do_dump_mmp(int argc EXT2FS_ATTR((unused)),
2404 char *argv[] EXT2FS_ATTR((unused)))
2405 {
2406 fprintf(stdout, "MMP is unsupported, please recompile with "
2407 "--enable-mmp\n");
2408 }
2409 #endif
2410
2411 static int source_file(const char *cmd_file, int ss_idx)
2412 {
2413 FILE *f;
2414 char buf[BUFSIZ];
2415 char *cp;
2416 int exit_status = 0;
2417 int retval;
2418
2419 if (strcmp(cmd_file, "-") == 0)
2420 f = stdin;
2421 else {
2422 f = fopen(cmd_file, "r");
2423 if (!f) {
2424 perror(cmd_file);
2425 exit(1);
2426 }
2427 }
2428 fflush(stdout);
2429 fflush(stderr);
2430 setbuf(stdout, NULL);
2431 setbuf(stderr, NULL);
2432 while (!feof(f)) {
2433 if (fgets(buf, sizeof(buf), f) == NULL)
2434 break;
2435 cp = strchr(buf, '\n');
2436 if (cp)
2437 *cp = 0;
2438 cp = strchr(buf, '\r');
2439 if (cp)
2440 *cp = 0;
2441 printf("debugfs: %s\n", buf);
2442 retval = ss_execute_line(ss_idx, buf);
2443 if (retval) {
2444 ss_perror(ss_idx, retval, buf);
2445 exit_status++;
2446 }
2447 }
2448 if (f != stdin)
2449 fclose(f);
2450 return exit_status;
2451 }
2452
2453 int main(int argc, char **argv)
2454 {
2455 int retval;
2456 const char *usage =
2457 "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] "
2458 "[-R request] [-d data_source_device] [-i] [-n] [-D] [-V] ["
2459 #ifndef READ_ONLY
2460 "[-w] [-z undo_file] "
2461 #endif
2462 "[-c]] [device]";
2463 int c;
2464 int open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
2465 char *request = 0;
2466 int exit_status = 0;
2467 char *cmd_file = 0;
2468 blk64_t superblock = 0;
2469 blk64_t blocksize = 0;
2470 int catastrophic = 0;
2471 char *data_filename = 0;
2472 #ifdef READ_ONLY
2473 const char *opt_string = "nicR:f:b:s:Vd:D";
2474 #else
2475 const char *opt_string = "niwcR:f:b:s:Vd:Dz:";
2476 char *undo_file = NULL;
2477 #endif
2478 #ifdef CONFIG_JBD_DEBUG
2479 char *jbd_debug;
2480 #endif
2481
2482 if (debug_prog_name == 0)
2483 #ifdef READ_ONLY
2484 debug_prog_name = "rdebugfs";
2485 #else
2486 debug_prog_name = "debugfs";
2487 #endif
2488 add_error_table(&et_ext2_error_table);
2489 fprintf (stderr, "%s %s (%s)\n", debug_prog_name,
2490 E2FSPROGS_VERSION, E2FSPROGS_DATE);
2491
2492 #ifdef CONFIG_JBD_DEBUG
2493 jbd_debug = ss_safe_getenv("DEBUGFS_JBD_DEBUG");
2494 if (jbd_debug) {
2495 int res = sscanf(jbd_debug, "%d", &journal_enable_debug);
2496
2497 if (res != 1) {
2498 fprintf(stderr,
2499 "DEBUGFS_JBD_DEBUG \"%s\" not an integer\n\n",
2500 jbd_debug);
2501 exit(1);
2502 }
2503 }
2504 #endif
2505 while ((c = getopt (argc, argv, opt_string)) != EOF) {
2506 switch (c) {
2507 case 'R':
2508 request = optarg;
2509 break;
2510 case 'f':
2511 cmd_file = optarg;
2512 break;
2513 case 'd':
2514 data_filename = optarg;
2515 break;
2516 case 'i':
2517 open_flags |= EXT2_FLAG_IMAGE_FILE;
2518 break;
2519 case 'n':
2520 open_flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
2521 break;
2522 #ifndef READ_ONLY
2523 case 'w':
2524 open_flags |= EXT2_FLAG_RW;
2525 break;
2526 #endif
2527 case 'D':
2528 open_flags |= EXT2_FLAG_DIRECT_IO;
2529 break;
2530 case 'b':
2531 blocksize = parse_ulong(optarg, argv[0],
2532 "block size", 0);
2533 break;
2534 case 's':
2535 retval = strtoblk(argv[0], optarg,
2536 "superblock block number",
2537 &superblock);
2538 if (retval)
2539 return 1;
2540 break;
2541 case 'c':
2542 catastrophic = 1;
2543 break;
2544 case 'V':
2545 /* Print version number and exit */
2546 fprintf(stderr, "\tUsing %s\n",
2547 error_message(EXT2_ET_BASE));
2548 exit(0);
2549 case 'z':
2550 undo_file = optarg;
2551 break;
2552 default:
2553 com_err(argv[0], 0, usage, debug_prog_name);
2554 return 1;
2555 }
2556 }
2557 if (optind < argc)
2558 open_filesystem(argv[optind], open_flags,
2559 superblock, blocksize, catastrophic,
2560 data_filename, undo_file);
2561
2562 sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL,
2563 &debug_cmds, &retval);
2564 if (retval) {
2565 ss_perror(sci_idx, retval, "creating invocation");
2566 exit(1);
2567 }
2568 ss_get_readline(sci_idx);
2569
2570 (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
2571 if (retval) {
2572 ss_perror(sci_idx, retval, "adding standard requests");
2573 exit (1);
2574 }
2575 if (extra_cmds)
2576 ss_add_request_table (sci_idx, extra_cmds, 1, &retval);
2577 if (retval) {
2578 ss_perror(sci_idx, retval, "adding extra requests");
2579 exit (1);
2580 }
2581 if (request) {
2582 retval = 0;
2583 retval = ss_execute_line(sci_idx, request);
2584 if (retval) {
2585 ss_perror(sci_idx, retval, request);
2586 exit_status++;
2587 }
2588 } else if (cmd_file) {
2589 exit_status = source_file(cmd_file, sci_idx);
2590 } else {
2591 ss_listen(sci_idx);
2592 }
2593
2594 ss_delete_invocation(sci_idx);
2595
2596 if (current_fs)
2597 close_filesystem();
2598
2599 remove_error_table(&et_ext2_error_table);
2600 return exit_status;
2601 }
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