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debugfs: fix various minor bogosity
[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 #ifdef HAVE_GETOPT_H
19 #include <getopt.h>
20 #else
21 extern int optind;
22 extern char *optarg;
23 #endif
24 #ifdef HAVE_ERRNO_H
25 #include <errno.h>
26 #endif
27 #include <fcntl.h>
28 #include <sys/types.h>
29 #include <sys/stat.h>
30
31 #include "debugfs.h"
32 #include "uuid/uuid.h"
33 #include "e2p/e2p.h"
34
35 #include <ext2fs/ext2_ext_attr.h>
36
37 #include "../version.h"
38 #include "jfs_user.h"
39
40 #ifndef BUFSIZ
41 #define BUFSIZ 8192
42 #endif
43
44 /* 64KiB is the minimium blksize to best minimize system call overhead. */
45 #ifndef IO_BUFSIZE
46 #define IO_BUFSIZE 64*1024
47 #endif
48
49 /* Block size for `st_blocks' */
50 #ifndef S_BLKSIZE
51 #define S_BLKSIZE 512
52 #endif
53
54 ss_request_table *extra_cmds;
55 const char *debug_prog_name;
56 int sci_idx;
57
58 ext2_filsys current_fs = NULL;
59 ext2_ino_t root, cwd;
60
61 static void open_filesystem(char *device, int open_flags, blk64_t superblock,
62 blk64_t blocksize, int catastrophic,
63 char *data_filename)
64 {
65 int retval;
66 io_channel data_io = 0;
67
68 if (superblock != 0 && blocksize == 0) {
69 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
70 current_fs = NULL;
71 return;
72 }
73
74 if (data_filename) {
75 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
76 com_err(device, 0,
77 "The -d option is only valid when reading an e2image file");
78 current_fs = NULL;
79 return;
80 }
81 retval = unix_io_manager->open(data_filename, 0, &data_io);
82 if (retval) {
83 com_err(data_filename, 0, "while opening data source");
84 current_fs = NULL;
85 return;
86 }
87 }
88
89 if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
90 com_err(device, 0,
91 "opening read-only because of catastrophic mode");
92 open_flags &= ~EXT2_FLAG_RW;
93 }
94 if (catastrophic)
95 open_flags |= EXT2_FLAG_SKIP_MMP;
96
97 retval = ext2fs_open(device, open_flags, superblock, blocksize,
98 unix_io_manager, &current_fs);
99 if (retval) {
100 com_err(device, retval, "while opening filesystem");
101 current_fs = NULL;
102 return;
103 }
104 current_fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
105
106 if (catastrophic)
107 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
108 else {
109 retval = ext2fs_read_inode_bitmap(current_fs);
110 if (retval) {
111 com_err(device, retval, "while reading inode bitmap");
112 goto errout;
113 }
114 retval = ext2fs_read_block_bitmap(current_fs);
115 if (retval) {
116 com_err(device, retval, "while reading block bitmap");
117 goto errout;
118 }
119 }
120
121 if (data_io) {
122 retval = ext2fs_set_data_io(current_fs, data_io);
123 if (retval) {
124 com_err(device, retval,
125 "while setting data source");
126 goto errout;
127 }
128 }
129
130 root = cwd = EXT2_ROOT_INO;
131 return;
132
133 errout:
134 retval = ext2fs_close(current_fs);
135 if (retval)
136 com_err(device, retval, "while trying to close filesystem");
137 current_fs = NULL;
138 }
139
140 void do_open_filesys(int argc, char **argv)
141 {
142 int c, err;
143 int catastrophic = 0;
144 blk64_t superblock = 0;
145 blk64_t blocksize = 0;
146 int open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
147 char *data_filename = 0;
148
149 reset_getopt();
150 while ((c = getopt (argc, argv, "iwfecb:s:d:D")) != EOF) {
151 switch (c) {
152 case 'i':
153 open_flags |= EXT2_FLAG_IMAGE_FILE;
154 break;
155 case 'w':
156 #ifdef READ_ONLY
157 goto print_usage;
158 #else
159 open_flags |= EXT2_FLAG_RW;
160 #endif /* READ_ONLY */
161 break;
162 case 'f':
163 open_flags |= EXT2_FLAG_FORCE;
164 break;
165 case 'e':
166 open_flags |= EXT2_FLAG_EXCLUSIVE;
167 break;
168 case 'c':
169 catastrophic = 1;
170 break;
171 case 'd':
172 data_filename = optarg;
173 break;
174 case 'D':
175 open_flags |= EXT2_FLAG_DIRECT_IO;
176 break;
177 case 'b':
178 blocksize = parse_ulong(optarg, argv[0],
179 "block size", &err);
180 if (err)
181 return;
182 break;
183 case 's':
184 superblock = parse_ulong(optarg, argv[0],
185 "superblock number", &err);
186 if (err)
187 return;
188 break;
189 default:
190 goto print_usage;
191 }
192 }
193 if (optind != argc-1) {
194 goto print_usage;
195 }
196 if (check_fs_not_open(argv[0]))
197 return;
198 open_filesystem(argv[optind], open_flags,
199 superblock, blocksize, catastrophic,
200 data_filename);
201 return;
202
203 print_usage:
204 fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] "
205 "[-d image_filename] [-c] [-i] [-f] [-e] [-D] "
206 #ifndef READ_ONLY
207 "[-w] "
208 #endif
209 "<device>\n", argv[0]);
210 }
211
212 void do_lcd(int argc, char **argv)
213 {
214 if (argc != 2) {
215 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>");
216 return;
217 }
218
219 if (chdir(argv[1]) == -1) {
220 com_err(argv[0], errno,
221 "while trying to change native directory to %s",
222 argv[1]);
223 return;
224 }
225 }
226
227 static void close_filesystem(NOARGS)
228 {
229 int retval;
230
231 if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
232 retval = ext2fs_write_inode_bitmap(current_fs);
233 if (retval)
234 com_err("ext2fs_write_inode_bitmap", retval, 0);
235 }
236 if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
237 retval = ext2fs_write_block_bitmap(current_fs);
238 if (retval)
239 com_err("ext2fs_write_block_bitmap", retval, 0);
240 }
241 retval = ext2fs_close(current_fs);
242 if (retval)
243 com_err("ext2fs_close", retval, 0);
244 current_fs = NULL;
245 return;
246 }
247
248 void do_close_filesys(int argc, char **argv)
249 {
250 int c;
251
252 if (check_fs_open(argv[0]))
253 return;
254
255 reset_getopt();
256 while ((c = getopt (argc, argv, "a")) != EOF) {
257 switch (c) {
258 case 'a':
259 current_fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
260 break;
261 default:
262 goto print_usage;
263 }
264 }
265
266 if (argc > optind) {
267 print_usage:
268 com_err(0, 0, "Usage: close_filesys [-a]");
269 return;
270 }
271
272 close_filesystem();
273 }
274
275 #ifndef READ_ONLY
276 void do_init_filesys(int argc, char **argv)
277 {
278 struct ext2_super_block param;
279 errcode_t retval;
280 int err;
281
282 if (common_args_process(argc, argv, 3, 3, "initialize",
283 "<device> <blocks>", CHECK_FS_NOTOPEN))
284 return;
285
286 memset(&param, 0, sizeof(struct ext2_super_block));
287 ext2fs_blocks_count_set(&param, parse_ulong(argv[2], argv[0],
288 "blocks count", &err));
289 if (err)
290 return;
291 retval = ext2fs_initialize(argv[1], 0, &param,
292 unix_io_manager, &current_fs);
293 if (retval) {
294 com_err(argv[1], retval, "while initializing filesystem");
295 current_fs = NULL;
296 return;
297 }
298 root = cwd = EXT2_ROOT_INO;
299 return;
300 }
301
302 static void print_features(struct ext2_super_block * s, FILE *f)
303 {
304 int i, j, printed=0;
305 __u32 *mask = &s->s_feature_compat, m;
306
307 fputs("Filesystem features:", f);
308 for (i=0; i <3; i++,mask++) {
309 for (j=0,m=1; j < 32; j++, m<<=1) {
310 if (*mask & m) {
311 fprintf(f, " %s", e2p_feature2string(i, m));
312 printed++;
313 }
314 }
315 }
316 if (printed == 0)
317 fputs("(none)", f);
318 fputs("\n", f);
319 }
320 #endif /* READ_ONLY */
321
322 static void print_bg_opts(ext2_filsys fs, dgrp_t group, int mask,
323 const char *str, int *first, FILE *f)
324 {
325 if (ext2fs_bg_flags_test(fs, group, mask)) {
326 if (*first) {
327 fputs(" [", f);
328 *first = 0;
329 } else
330 fputs(", ", f);
331 fputs(str, f);
332 }
333 }
334
335 void do_show_super_stats(int argc, char *argv[])
336 {
337 const char *units ="block";
338 dgrp_t i;
339 FILE *out;
340 int c, header_only = 0;
341 int numdirs = 0, first, gdt_csum;
342
343 reset_getopt();
344 while ((c = getopt (argc, argv, "h")) != EOF) {
345 switch (c) {
346 case 'h':
347 header_only++;
348 break;
349 default:
350 goto print_usage;
351 }
352 }
353 if (optind != argc) {
354 goto print_usage;
355 }
356 if (check_fs_open(argv[0]))
357 return;
358 out = open_pager();
359
360 if (EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super,
361 EXT4_FEATURE_RO_COMPAT_BIGALLOC))
362 units = "cluster";
363
364 list_super2(current_fs->super, out);
365 for (i=0; i < current_fs->group_desc_count; i++)
366 numdirs += ext2fs_bg_used_dirs_count(current_fs, i);
367 fprintf(out, "Directories: %d\n", numdirs);
368
369 if (header_only) {
370 close_pager(out);
371 return;
372 }
373
374 gdt_csum = EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super,
375 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
376 for (i = 0; i < current_fs->group_desc_count; i++) {
377 fprintf(out, " Group %2d: block bitmap at %llu, "
378 "inode bitmap at %llu, "
379 "inode table at %llu\n"
380 " %u free %s%s, "
381 "%u free %s, "
382 "%u used %s%s",
383 i, ext2fs_block_bitmap_loc(current_fs, i),
384 ext2fs_inode_bitmap_loc(current_fs, i),
385 ext2fs_inode_table_loc(current_fs, i),
386 ext2fs_bg_free_blocks_count(current_fs, i), units,
387 ext2fs_bg_free_blocks_count(current_fs, i) != 1 ?
388 "s" : "",
389 ext2fs_bg_free_inodes_count(current_fs, i),
390 ext2fs_bg_free_inodes_count(current_fs, i) != 1 ?
391 "inodes" : "inode",
392 ext2fs_bg_used_dirs_count(current_fs, i),
393 ext2fs_bg_used_dirs_count(current_fs, i) != 1 ? "directories"
394 : "directory", gdt_csum ? ", " : "\n");
395 if (gdt_csum)
396 fprintf(out, "%u unused %s\n",
397 ext2fs_bg_itable_unused(current_fs, i),
398 ext2fs_bg_itable_unused(current_fs, i) != 1 ?
399 "inodes" : "inode");
400 first = 1;
401 print_bg_opts(current_fs, i, EXT2_BG_INODE_UNINIT, "Inode not init",
402 &first, out);
403 print_bg_opts(current_fs, i, EXT2_BG_BLOCK_UNINIT, "Block not init",
404 &first, out);
405 if (gdt_csum) {
406 fprintf(out, "%sChecksum 0x%04x",
407 first ? " [":", ", ext2fs_bg_checksum(current_fs, i));
408 first = 0;
409 }
410 if (!first)
411 fputs("]\n", out);
412 }
413 close_pager(out);
414 return;
415 print_usage:
416 fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
417 }
418
419 #ifndef READ_ONLY
420 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
421 char **argv EXT2FS_ATTR((unused)))
422 {
423 if (check_fs_open(argv[0]))
424 return;
425 if (check_fs_read_write(argv[0]))
426 return;
427
428 if (argv[1] && !strcmp(argv[1], "-clean"))
429 current_fs->super->s_state |= EXT2_VALID_FS;
430 else
431 current_fs->super->s_state &= ~EXT2_VALID_FS;
432 ext2fs_mark_super_dirty(current_fs);
433 }
434 #endif /* READ_ONLY */
435
436 struct list_blocks_struct {
437 FILE *f;
438 e2_blkcnt_t total;
439 blk64_t first_block, last_block;
440 e2_blkcnt_t first_bcnt, last_bcnt;
441 e2_blkcnt_t first;
442 };
443
444 static void finish_range(struct list_blocks_struct *lb)
445 {
446 if (lb->first_block == 0)
447 return;
448 if (lb->first)
449 lb->first = 0;
450 else
451 fprintf(lb->f, ", ");
452 if (lb->first_block == lb->last_block)
453 fprintf(lb->f, "(%lld):%llu",
454 (long long)lb->first_bcnt, lb->first_block);
455 else
456 fprintf(lb->f, "(%lld-%lld):%llu-%llu",
457 (long long)lb->first_bcnt, (long long)lb->last_bcnt,
458 lb->first_block, lb->last_block);
459 lb->first_block = 0;
460 }
461
462 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
463 blk64_t *blocknr, e2_blkcnt_t blockcnt,
464 blk64_t ref_block EXT2FS_ATTR((unused)),
465 int ref_offset EXT2FS_ATTR((unused)),
466 void *private)
467 {
468 struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
469
470 lb->total++;
471 if (blockcnt >= 0) {
472 /*
473 * See if we can add on to the existing range (if it exists)
474 */
475 if (lb->first_block &&
476 (lb->last_block+1 == *blocknr) &&
477 (lb->last_bcnt+1 == blockcnt)) {
478 lb->last_block = *blocknr;
479 lb->last_bcnt = blockcnt;
480 return 0;
481 }
482 /*
483 * Start a new range.
484 */
485 finish_range(lb);
486 lb->first_block = lb->last_block = *blocknr;
487 lb->first_bcnt = lb->last_bcnt = blockcnt;
488 return 0;
489 }
490 /*
491 * Not a normal block. Always force a new range.
492 */
493 finish_range(lb);
494 if (lb->first)
495 lb->first = 0;
496 else
497 fprintf(lb->f, ", ");
498 if (blockcnt == -1)
499 fprintf(lb->f, "(IND):%llu", (unsigned long long) *blocknr);
500 else if (blockcnt == -2)
501 fprintf(lb->f, "(DIND):%llu", (unsigned long long) *blocknr);
502 else if (blockcnt == -3)
503 fprintf(lb->f, "(TIND):%llu", (unsigned long long) *blocknr);
504 return 0;
505 }
506
507 static void dump_xattr_string(FILE *out, const char *str, int len)
508 {
509 int printable = 0;
510 int i;
511
512 /* check: is string "printable enough?" */
513 for (i = 0; i < len; i++)
514 if (isprint(str[i]))
515 printable++;
516
517 if (printable <= len*7/8)
518 printable = 0;
519
520 for (i = 0; i < len; i++)
521 if (printable)
522 fprintf(out, isprint(str[i]) ? "%c" : "\\%03o",
523 (unsigned char)str[i]);
524 else
525 fprintf(out, "%02x ", (unsigned char)str[i]);
526 }
527
528 static void internal_dump_inode_extra(FILE *out,
529 const char *prefix EXT2FS_ATTR((unused)),
530 ext2_ino_t inode_num EXT2FS_ATTR((unused)),
531 struct ext2_inode_large *inode)
532 {
533 struct ext2_ext_attr_entry *entry;
534 __u32 *magic;
535 char *start, *end;
536 unsigned int storage_size;
537
538 fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
539 if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
540 EXT2_GOOD_OLD_INODE_SIZE) {
541 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
542 inode->i_extra_isize);
543 return;
544 }
545 storage_size = EXT2_INODE_SIZE(current_fs->super) -
546 EXT2_GOOD_OLD_INODE_SIZE -
547 inode->i_extra_isize;
548 magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
549 inode->i_extra_isize);
550 if (*magic == EXT2_EXT_ATTR_MAGIC) {
551 fprintf(out, "Extended attributes stored in inode body: \n");
552 end = (char *) inode + EXT2_INODE_SIZE(current_fs->super);
553 start = (char *) magic + sizeof(__u32);
554 entry = (struct ext2_ext_attr_entry *) start;
555 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
556 struct ext2_ext_attr_entry *next =
557 EXT2_EXT_ATTR_NEXT(entry);
558 if (entry->e_value_size > storage_size ||
559 (char *) next >= end) {
560 fprintf(out, "invalid EA entry in inode\n");
561 return;
562 }
563 fprintf(out, " ");
564 dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry),
565 entry->e_name_len);
566 fprintf(out, " = \"");
567 dump_xattr_string(out, start + entry->e_value_offs,
568 entry->e_value_size);
569 fprintf(out, "\" (%u)\n", entry->e_value_size);
570 entry = next;
571 }
572 }
573 }
574
575 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
576 {
577 struct list_blocks_struct lb;
578
579 fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
580 lb.total = 0;
581 lb.first_block = 0;
582 lb.f = f;
583 lb.first = 1;
584 ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
585 list_blocks_proc, (void *)&lb);
586 finish_range(&lb);
587 if (lb.total)
588 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
589 fprintf(f,"\n");
590 }
591
592 static int int_log10(unsigned long long arg)
593 {
594 int l = 0;
595
596 arg = arg / 10;
597 while (arg) {
598 l++;
599 arg = arg / 10;
600 }
601 return l;
602 }
603
604 #define DUMP_LEAF_EXTENTS 0x01
605 #define DUMP_NODE_EXTENTS 0x02
606 #define DUMP_EXTENT_TABLE 0x04
607
608 static void dump_extents(FILE *f, const char *prefix, ext2_ino_t ino,
609 int flags, int logical_width, int physical_width)
610 {
611 ext2_extent_handle_t handle;
612 struct ext2fs_extent extent;
613 struct ext2_extent_info info;
614 int op = EXT2_EXTENT_ROOT;
615 unsigned int printed = 0;
616 errcode_t errcode;
617
618 errcode = ext2fs_extent_open(current_fs, ino, &handle);
619 if (errcode)
620 return;
621
622 if (flags & DUMP_EXTENT_TABLE)
623 fprintf(f, "Level Entries %*s %*s Length Flags\n",
624 (logical_width*2)+3, "Logical",
625 (physical_width*2)+3, "Physical");
626 else
627 fprintf(f, "%sEXTENTS:\n%s", prefix, prefix);
628
629 while (1) {
630 errcode = ext2fs_extent_get(handle, op, &extent);
631
632 if (errcode)
633 break;
634
635 op = EXT2_EXTENT_NEXT;
636
637 if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
638 continue;
639
640 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
641 if ((flags & DUMP_LEAF_EXTENTS) == 0)
642 continue;
643 } else {
644 if ((flags & DUMP_NODE_EXTENTS) == 0)
645 continue;
646 }
647
648 errcode = ext2fs_extent_get_info(handle, &info);
649 if (errcode)
650 continue;
651
652 if (!(extent.e_flags & EXT2_EXTENT_FLAGS_LEAF)) {
653 if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
654 continue;
655
656 if (flags & DUMP_EXTENT_TABLE) {
657 fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
658 "%*llu%*s %6u\n",
659 info.curr_level, info.max_depth,
660 info.curr_entry, info.num_entries,
661 logical_width,
662 extent.e_lblk,
663 logical_width,
664 extent.e_lblk + (extent.e_len - 1),
665 physical_width,
666 extent.e_pblk,
667 physical_width+3, "", extent.e_len);
668 continue;
669 }
670
671 fprintf(f, "%s(ETB%d):%lld",
672 printed ? ", " : "", info.curr_level,
673 extent.e_pblk);
674 printed = 1;
675 continue;
676 }
677
678 if (flags & DUMP_EXTENT_TABLE) {
679 fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
680 "%*llu - %*llu %6u %s\n",
681 info.curr_level, info.max_depth,
682 info.curr_entry, info.num_entries,
683 logical_width,
684 extent.e_lblk,
685 logical_width,
686 extent.e_lblk + (extent.e_len - 1),
687 physical_width,
688 extent.e_pblk,
689 physical_width,
690 extent.e_pblk + (extent.e_len - 1),
691 extent.e_len,
692 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
693 "Uninit" : "");
694 continue;
695 }
696
697 if (extent.e_len == 0)
698 continue;
699 else if (extent.e_len == 1)
700 fprintf(f,
701 "%s(%lld%s):%lld",
702 printed ? ", " : "",
703 extent.e_lblk,
704 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
705 "[u]" : "",
706 extent.e_pblk);
707 else
708 fprintf(f,
709 "%s(%lld-%lld%s):%lld-%lld",
710 printed ? ", " : "",
711 extent.e_lblk,
712 extent.e_lblk + (extent.e_len - 1),
713 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
714 "[u]" : "",
715 extent.e_pblk,
716 extent.e_pblk + (extent.e_len - 1));
717 printed = 1;
718 }
719 if (printed)
720 fprintf(f, "\n");
721 }
722
723 void internal_dump_inode(FILE *out, const char *prefix,
724 ext2_ino_t inode_num, struct ext2_inode *inode,
725 int do_dump_blocks)
726 {
727 const char *i_type;
728 char frag, fsize;
729 int os = current_fs->super->s_creator_os;
730 struct ext2_inode_large *large_inode;
731 int is_large_inode = 0;
732
733 if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
734 is_large_inode = 1;
735 large_inode = (struct ext2_inode_large *) inode;
736
737 if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
738 else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
739 else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
740 else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
741 else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
742 else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
743 else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
744 else i_type = "bad type";
745 fprintf(out, "%sInode: %u Type: %s ", prefix, inode_num, i_type);
746 fprintf(out, "%sMode: %04o Flags: 0x%x\n",
747 prefix, inode->i_mode & 0777, inode->i_flags);
748 if (is_large_inode && large_inode->i_extra_isize >= 24) {
749 fprintf(out, "%sGeneration: %u Version: 0x%08x:%08x\n",
750 prefix, inode->i_generation, large_inode->i_version_hi,
751 inode->osd1.linux1.l_i_version);
752 } else {
753 fprintf(out, "%sGeneration: %u Version: 0x%08x\n", prefix,
754 inode->i_generation, inode->osd1.linux1.l_i_version);
755 }
756 fprintf(out, "%sUser: %5d Group: %5d Size: ",
757 prefix, inode_uid(*inode), inode_gid(*inode));
758 if (LINUX_S_ISREG(inode->i_mode))
759 fprintf(out, "%llu\n", EXT2_I_SIZE(inode));
760 else
761 fprintf(out, "%d\n", inode->i_size);
762 if (os == EXT2_OS_HURD)
763 fprintf(out,
764 "%sFile ACL: %d Directory ACL: %d Translator: %d\n",
765 prefix,
766 inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
767 inode->osd1.hurd1.h_i_translator);
768 else
769 fprintf(out, "%sFile ACL: %llu Directory ACL: %d\n",
770 prefix,
771 inode->i_file_acl | ((long long)
772 (inode->osd2.linux2.l_i_file_acl_high) << 32),
773 LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
774 if (os == EXT2_OS_LINUX)
775 fprintf(out, "%sLinks: %d Blockcount: %llu\n",
776 prefix, inode->i_links_count,
777 (((unsigned long long)
778 inode->osd2.linux2.l_i_blocks_hi << 32)) +
779 inode->i_blocks);
780 else
781 fprintf(out, "%sLinks: %d Blockcount: %u\n",
782 prefix, inode->i_links_count, inode->i_blocks);
783 switch (os) {
784 case EXT2_OS_HURD:
785 frag = inode->osd2.hurd2.h_i_frag;
786 fsize = inode->osd2.hurd2.h_i_fsize;
787 break;
788 default:
789 frag = fsize = 0;
790 }
791 fprintf(out, "%sFragment: Address: %d Number: %d Size: %d\n",
792 prefix, inode->i_faddr, frag, fsize);
793 if (is_large_inode && large_inode->i_extra_isize >= 24) {
794 fprintf(out, "%s ctime: 0x%08x:%08x -- %s", prefix,
795 inode->i_ctime, large_inode->i_ctime_extra,
796 time_to_string(inode->i_ctime));
797 fprintf(out, "%s atime: 0x%08x:%08x -- %s", prefix,
798 inode->i_atime, large_inode->i_atime_extra,
799 time_to_string(inode->i_atime));
800 fprintf(out, "%s mtime: 0x%08x:%08x -- %s", prefix,
801 inode->i_mtime, large_inode->i_mtime_extra,
802 time_to_string(inode->i_mtime));
803 fprintf(out, "%scrtime: 0x%08x:%08x -- %s", prefix,
804 large_inode->i_crtime, large_inode->i_crtime_extra,
805 time_to_string(large_inode->i_crtime));
806 } else {
807 fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
808 time_to_string(inode->i_ctime));
809 fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
810 time_to_string(inode->i_atime));
811 fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
812 time_to_string(inode->i_mtime));
813 }
814 if (inode->i_dtime)
815 fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
816 time_to_string(inode->i_dtime));
817 if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
818 internal_dump_inode_extra(out, prefix, inode_num,
819 (struct ext2_inode_large *) inode);
820 if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
821 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
822 (int) inode->i_size, (char *)inode->i_block);
823 else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
824 int major, minor;
825 const char *devnote;
826
827 if (inode->i_block[0]) {
828 major = (inode->i_block[0] >> 8) & 255;
829 minor = inode->i_block[0] & 255;
830 devnote = "";
831 } else {
832 major = (inode->i_block[1] & 0xfff00) >> 8;
833 minor = ((inode->i_block[1] & 0xff) |
834 ((inode->i_block[1] >> 12) & 0xfff00));
835 devnote = "(New-style) ";
836 }
837 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
838 devnote, major, minor, major, minor);
839 } else if (do_dump_blocks) {
840 if (inode->i_flags & EXT4_EXTENTS_FL)
841 dump_extents(out, prefix, inode_num,
842 DUMP_LEAF_EXTENTS|DUMP_NODE_EXTENTS, 0, 0);
843 else
844 dump_blocks(out, prefix, inode_num);
845 }
846 }
847
848 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
849 {
850 FILE *out;
851
852 out = open_pager();
853 internal_dump_inode(out, "", inode_num, inode, 1);
854 close_pager(out);
855 }
856
857 void do_stat(int argc, char *argv[])
858 {
859 ext2_ino_t inode;
860 struct ext2_inode * inode_buf;
861
862 if (check_fs_open(argv[0]))
863 return;
864
865 inode_buf = (struct ext2_inode *)
866 malloc(EXT2_INODE_SIZE(current_fs->super));
867 if (!inode_buf) {
868 fprintf(stderr, "do_stat: can't allocate buffer\n");
869 return;
870 }
871
872 if (common_inode_args_process(argc, argv, &inode, 0)) {
873 free(inode_buf);
874 return;
875 }
876
877 if (debugfs_read_inode_full(inode, inode_buf, argv[0],
878 EXT2_INODE_SIZE(current_fs->super))) {
879 free(inode_buf);
880 return;
881 }
882
883 dump_inode(inode, inode_buf);
884 free(inode_buf);
885 return;
886 }
887
888 void do_dump_extents(int argc, char **argv)
889 {
890 struct ext2_inode inode;
891 ext2_ino_t ino;
892 FILE *out;
893 int c, flags = 0;
894 int logical_width;
895 int physical_width;
896
897 reset_getopt();
898 while ((c = getopt(argc, argv, "nl")) != EOF) {
899 switch (c) {
900 case 'n':
901 flags |= DUMP_NODE_EXTENTS;
902 break;
903 case 'l':
904 flags |= DUMP_LEAF_EXTENTS;
905 break;
906 }
907 }
908
909 if (argc != optind + 1) {
910 com_err(0, 0, "Usage: dump_extents [-n] [-l] file");
911 return;
912 }
913
914 if (flags == 0)
915 flags = DUMP_NODE_EXTENTS | DUMP_LEAF_EXTENTS;
916 flags |= DUMP_EXTENT_TABLE;
917
918 if (check_fs_open(argv[0]))
919 return;
920
921 ino = string_to_inode(argv[optind]);
922 if (ino == 0)
923 return;
924
925 if (debugfs_read_inode(ino, &inode, argv[0]))
926 return;
927
928 if ((inode.i_flags & EXT4_EXTENTS_FL) == 0) {
929 fprintf(stderr, "%s: does not uses extent block maps\n",
930 argv[optind]);
931 return;
932 }
933
934 logical_width = int_log10((EXT2_I_SIZE(&inode)+current_fs->blocksize-1)/
935 current_fs->blocksize) + 1;
936 if (logical_width < 5)
937 logical_width = 5;
938 physical_width = int_log10(ext2fs_blocks_count(current_fs->super)) + 1;
939 if (physical_width < 5)
940 physical_width = 5;
941
942 out = open_pager();
943 dump_extents(out, "", ino, flags, logical_width, physical_width);
944 close_pager(out);
945 return;
946 }
947
948 static int print_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
949 blk64_t *blocknr,
950 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
951 blk64_t ref_block EXT2FS_ATTR((unused)),
952 int ref_offset EXT2FS_ATTR((unused)),
953 void *private EXT2FS_ATTR((unused)))
954 {
955 printf("%llu ", *blocknr);
956 return 0;
957 }
958
959 void do_blocks(int argc, char *argv[])
960 {
961 ext2_ino_t inode;
962
963 if (check_fs_open(argv[0]))
964 return;
965
966 if (common_inode_args_process(argc, argv, &inode, 0)) {
967 return;
968 }
969
970 ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
971 print_blocks_proc, NULL);
972 fputc('\n', stdout);
973 return;
974 }
975
976 void do_chroot(int argc, char *argv[])
977 {
978 ext2_ino_t inode;
979 int retval;
980
981 if (common_inode_args_process(argc, argv, &inode, 0))
982 return;
983
984 retval = ext2fs_check_directory(current_fs, inode);
985 if (retval) {
986 com_err(argv[1], retval, 0);
987 return;
988 }
989 root = inode;
990 }
991
992 #ifndef READ_ONLY
993 void do_clri(int argc, char *argv[])
994 {
995 ext2_ino_t inode;
996 struct ext2_inode inode_buf;
997
998 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
999 return;
1000
1001 if (debugfs_read_inode(inode, &inode_buf, argv[0]))
1002 return;
1003 memset(&inode_buf, 0, sizeof(inode_buf));
1004 if (debugfs_write_inode(inode, &inode_buf, argv[0]))
1005 return;
1006 }
1007
1008 void do_freei(int argc, char *argv[])
1009 {
1010 unsigned int len = 1;
1011 int err = 0;
1012 ext2_ino_t inode;
1013
1014 if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1015 CHECK_FS_RW | CHECK_FS_BITMAPS))
1016 return;
1017 if (check_fs_read_write(argv[0]))
1018 return;
1019
1020 inode = string_to_inode(argv[1]);
1021 if (!inode)
1022 return;
1023
1024 if (argc == 3) {
1025 len = parse_ulong(argv[2], argv[0], "length", &err);
1026 if (err)
1027 return;
1028 }
1029
1030 if (len == 1 &&
1031 !ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1032 com_err(argv[0], 0, "Warning: inode already clear");
1033 while (len-- > 0)
1034 ext2fs_unmark_inode_bitmap2(current_fs->inode_map, inode++);
1035 ext2fs_mark_ib_dirty(current_fs);
1036 }
1037
1038 void do_seti(int argc, char *argv[])
1039 {
1040 unsigned int len = 1;
1041 int err = 0;
1042 ext2_ino_t inode;
1043
1044 if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1045 CHECK_FS_RW | CHECK_FS_BITMAPS))
1046 return;
1047 if (check_fs_read_write(argv[0]))
1048 return;
1049
1050 inode = string_to_inode(argv[1]);
1051 if (!inode)
1052 return;
1053
1054 if (argc == 3) {
1055 len = parse_ulong(argv[2], argv[0], "length", &err);
1056 if (err)
1057 return;
1058 }
1059
1060 if ((len == 1) &&
1061 ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1062 com_err(argv[0], 0, "Warning: inode already set");
1063 while (len-- > 0)
1064 ext2fs_mark_inode_bitmap2(current_fs->inode_map, inode++);
1065 ext2fs_mark_ib_dirty(current_fs);
1066 }
1067 #endif /* READ_ONLY */
1068
1069 void do_testi(int argc, char *argv[])
1070 {
1071 ext2_ino_t inode;
1072
1073 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
1074 return;
1075
1076 if (ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1077 printf("Inode %u is marked in use\n", inode);
1078 else
1079 printf("Inode %u is not in use\n", inode);
1080 }
1081
1082 #ifndef READ_ONLY
1083 void do_freeb(int argc, char *argv[])
1084 {
1085 blk64_t block;
1086 blk64_t count = 1;
1087
1088 if (common_block_args_process(argc, argv, &block, &count))
1089 return;
1090 if (check_fs_read_write(argv[0]))
1091 return;
1092 while (count-- > 0) {
1093 if (!ext2fs_test_block_bitmap2(current_fs->block_map,block))
1094 com_err(argv[0], 0, "Warning: block %llu already clear",
1095 block);
1096 ext2fs_unmark_block_bitmap2(current_fs->block_map,block);
1097 block++;
1098 }
1099 ext2fs_mark_bb_dirty(current_fs);
1100 }
1101
1102 void do_setb(int argc, char *argv[])
1103 {
1104 blk64_t block;
1105 blk64_t count = 1;
1106
1107 if (common_block_args_process(argc, argv, &block, &count))
1108 return;
1109 if (check_fs_read_write(argv[0]))
1110 return;
1111 while (count-- > 0) {
1112 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1113 com_err(argv[0], 0, "Warning: block %llu already set",
1114 block);
1115 ext2fs_mark_block_bitmap2(current_fs->block_map,block);
1116 block++;
1117 }
1118 ext2fs_mark_bb_dirty(current_fs);
1119 }
1120 #endif /* READ_ONLY */
1121
1122 void do_testb(int argc, char *argv[])
1123 {
1124 blk64_t block;
1125 blk64_t count = 1;
1126
1127 if (common_block_args_process(argc, argv, &block, &count))
1128 return;
1129 while (count-- > 0) {
1130 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1131 printf("Block %llu marked in use\n", block);
1132 else
1133 printf("Block %llu not in use\n", block);
1134 block++;
1135 }
1136 }
1137
1138 #ifndef READ_ONLY
1139 static void modify_u8(char *com, const char *prompt,
1140 const char *format, __u8 *val)
1141 {
1142 char buf[200];
1143 unsigned long v;
1144 char *tmp;
1145
1146 sprintf(buf, format, *val);
1147 printf("%30s [%s] ", prompt, buf);
1148 if (!fgets(buf, sizeof(buf), stdin))
1149 return;
1150 if (buf[strlen (buf) - 1] == '\n')
1151 buf[strlen (buf) - 1] = '\0';
1152 if (!buf[0])
1153 return;
1154 v = strtoul(buf, &tmp, 0);
1155 if (*tmp)
1156 com_err(com, 0, "Bad value - %s", buf);
1157 else
1158 *val = v;
1159 }
1160
1161 static void modify_u16(char *com, const char *prompt,
1162 const char *format, __u16 *val)
1163 {
1164 char buf[200];
1165 unsigned long v;
1166 char *tmp;
1167
1168 sprintf(buf, format, *val);
1169 printf("%30s [%s] ", prompt, buf);
1170 if (!fgets(buf, sizeof(buf), stdin))
1171 return;
1172 if (buf[strlen (buf) - 1] == '\n')
1173 buf[strlen (buf) - 1] = '\0';
1174 if (!buf[0])
1175 return;
1176 v = strtoul(buf, &tmp, 0);
1177 if (*tmp)
1178 com_err(com, 0, "Bad value - %s", buf);
1179 else
1180 *val = v;
1181 }
1182
1183 static void modify_u32(char *com, const char *prompt,
1184 const char *format, __u32 *val)
1185 {
1186 char buf[200];
1187 unsigned long v;
1188 char *tmp;
1189
1190 sprintf(buf, format, *val);
1191 printf("%30s [%s] ", prompt, buf);
1192 if (!fgets(buf, sizeof(buf), stdin))
1193 return;
1194 if (buf[strlen (buf) - 1] == '\n')
1195 buf[strlen (buf) - 1] = '\0';
1196 if (!buf[0])
1197 return;
1198 v = strtoul(buf, &tmp, 0);
1199 if (*tmp)
1200 com_err(com, 0, "Bad value - %s", buf);
1201 else
1202 *val = v;
1203 }
1204
1205
1206 void do_modify_inode(int argc, char *argv[])
1207 {
1208 struct ext2_inode inode;
1209 ext2_ino_t inode_num;
1210 int i;
1211 unsigned char *frag, *fsize;
1212 char buf[80];
1213 int os;
1214 const char *hex_format = "0x%x";
1215 const char *octal_format = "0%o";
1216 const char *decimal_format = "%d";
1217 const char *unsignedlong_format = "%lu";
1218
1219 if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1220 return;
1221
1222 os = current_fs->super->s_creator_os;
1223
1224 if (debugfs_read_inode(inode_num, &inode, argv[1]))
1225 return;
1226
1227 modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
1228 modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
1229 modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
1230 modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
1231 modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
1232 modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
1233 modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
1234 modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
1235 modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
1236 if (os == EXT2_OS_LINUX)
1237 modify_u16(argv[0], "Block count high", unsignedlong_format,
1238 &inode.osd2.linux2.l_i_blocks_hi);
1239 modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
1240 modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
1241 modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
1242 #if 0
1243 modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
1244 #endif
1245 modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
1246 if (LINUX_S_ISDIR(inode.i_mode))
1247 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
1248 else
1249 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
1250
1251 if (os == EXT2_OS_HURD)
1252 modify_u32(argv[0], "Translator Block",
1253 decimal_format, &inode.osd1.hurd1.h_i_translator);
1254
1255 modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
1256 switch (os) {
1257 case EXT2_OS_HURD:
1258 frag = &inode.osd2.hurd2.h_i_frag;
1259 fsize = &inode.osd2.hurd2.h_i_fsize;
1260 break;
1261 default:
1262 frag = fsize = 0;
1263 }
1264 if (frag)
1265 modify_u8(argv[0], "Fragment number", decimal_format, frag);
1266 if (fsize)
1267 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
1268
1269 for (i=0; i < EXT2_NDIR_BLOCKS; i++) {
1270 sprintf(buf, "Direct Block #%d", i);
1271 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
1272 }
1273 modify_u32(argv[0], "Indirect Block", decimal_format,
1274 &inode.i_block[EXT2_IND_BLOCK]);
1275 modify_u32(argv[0], "Double Indirect Block", decimal_format,
1276 &inode.i_block[EXT2_DIND_BLOCK]);
1277 modify_u32(argv[0], "Triple Indirect Block", decimal_format,
1278 &inode.i_block[EXT2_TIND_BLOCK]);
1279 if (debugfs_write_inode(inode_num, &inode, argv[1]))
1280 return;
1281 }
1282 #endif /* READ_ONLY */
1283
1284 void do_change_working_dir(int argc, char *argv[])
1285 {
1286 ext2_ino_t inode;
1287 int retval;
1288
1289 if (common_inode_args_process(argc, argv, &inode, 0))
1290 return;
1291
1292 retval = ext2fs_check_directory(current_fs, inode);
1293 if (retval) {
1294 com_err(argv[1], retval, 0);
1295 return;
1296 }
1297 cwd = inode;
1298 return;
1299 }
1300
1301 void do_print_working_directory(int argc, char *argv[])
1302 {
1303 int retval;
1304 char *pathname = NULL;
1305
1306 if (common_args_process(argc, argv, 1, 1,
1307 "print_working_directory", "", 0))
1308 return;
1309
1310 retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
1311 if (retval) {
1312 com_err(argv[0], retval,
1313 "while trying to get pathname of cwd");
1314 }
1315 printf("[pwd] INODE: %6u PATH: %s\n",
1316 cwd, pathname ? pathname : "NULL");
1317 if (pathname) {
1318 free(pathname);
1319 pathname = NULL;
1320 }
1321 retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
1322 if (retval) {
1323 com_err(argv[0], retval,
1324 "while trying to get pathname of root");
1325 }
1326 printf("[root] INODE: %6u PATH: %s\n",
1327 root, pathname ? pathname : "NULL");
1328 if (pathname) {
1329 free(pathname);
1330 pathname = NULL;
1331 }
1332 return;
1333 }
1334
1335 #ifndef READ_ONLY
1336 static void make_link(char *sourcename, char *destname)
1337 {
1338 ext2_ino_t ino;
1339 struct ext2_inode inode;
1340 int retval;
1341 ext2_ino_t dir;
1342 char *dest, *cp, *base_name;
1343
1344 /*
1345 * Get the source inode
1346 */
1347 ino = string_to_inode(sourcename);
1348 if (!ino)
1349 return;
1350 base_name = strrchr(sourcename, '/');
1351 if (base_name)
1352 base_name++;
1353 else
1354 base_name = sourcename;
1355 /*
1356 * Figure out the destination. First see if it exists and is
1357 * a directory.
1358 */
1359 if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1360 dest = base_name;
1361 else {
1362 /*
1363 * OK, it doesn't exist. See if it is
1364 * '<dir>/basename' or 'basename'
1365 */
1366 cp = strrchr(destname, '/');
1367 if (cp) {
1368 *cp = 0;
1369 dir = string_to_inode(destname);
1370 if (!dir)
1371 return;
1372 dest = cp+1;
1373 } else {
1374 dir = cwd;
1375 dest = destname;
1376 }
1377 }
1378
1379 if (debugfs_read_inode(ino, &inode, sourcename))
1380 return;
1381
1382 retval = ext2fs_link(current_fs, dir, dest, ino,
1383 ext2_file_type(inode.i_mode));
1384 if (retval)
1385 com_err("make_link", retval, 0);
1386 return;
1387 }
1388
1389
1390 void do_link(int argc, char *argv[])
1391 {
1392 if (common_args_process(argc, argv, 3, 3, "link",
1393 "<source file> <dest_name>", CHECK_FS_RW))
1394 return;
1395
1396 make_link(argv[1], argv[2]);
1397 }
1398
1399 static int mark_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1400 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1401 blk64_t ref_block EXT2FS_ATTR((unused)),
1402 int ref_offset EXT2FS_ATTR((unused)),
1403 void *private EXT2FS_ATTR((unused)))
1404 {
1405 blk64_t block;
1406
1407 block = *blocknr;
1408 ext2fs_block_alloc_stats2(fs, block, +1);
1409 return 0;
1410 }
1411
1412 void do_undel(int argc, char *argv[])
1413 {
1414 ext2_ino_t ino;
1415 struct ext2_inode inode;
1416
1417 if (common_args_process(argc, argv, 2, 3, "undelete",
1418 "<inode_num> [dest_name]",
1419 CHECK_FS_RW | CHECK_FS_BITMAPS))
1420 return;
1421
1422 ino = string_to_inode(argv[1]);
1423 if (!ino)
1424 return;
1425
1426 if (debugfs_read_inode(ino, &inode, argv[1]))
1427 return;
1428
1429 if (ext2fs_test_inode_bitmap2(current_fs->inode_map, ino)) {
1430 com_err(argv[1], 0, "Inode is not marked as deleted");
1431 return;
1432 }
1433
1434 /*
1435 * XXX this function doesn't handle changing the links count on the
1436 * parent directory when undeleting a directory.
1437 */
1438 inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1439 inode.i_dtime = 0;
1440
1441 if (debugfs_write_inode(ino, &inode, argv[0]))
1442 return;
1443
1444 ext2fs_block_iterate3(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL,
1445 mark_blocks_proc, NULL);
1446
1447 ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1448
1449 if (argc > 2)
1450 make_link(argv[1], argv[2]);
1451 }
1452
1453 static void unlink_file_by_name(char *filename)
1454 {
1455 int retval;
1456 ext2_ino_t dir;
1457 char *base_name;
1458
1459 base_name = strrchr(filename, '/');
1460 if (base_name) {
1461 *base_name++ = '\0';
1462 dir = string_to_inode(filename);
1463 if (!dir)
1464 return;
1465 } else {
1466 dir = cwd;
1467 base_name = filename;
1468 }
1469 retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
1470 if (retval)
1471 com_err("unlink_file_by_name", retval, 0);
1472 return;
1473 }
1474
1475 void do_unlink(int argc, char *argv[])
1476 {
1477 if (common_args_process(argc, argv, 2, 2, "link",
1478 "<pathname>", CHECK_FS_RW))
1479 return;
1480
1481 unlink_file_by_name(argv[1]);
1482 }
1483 #endif /* READ_ONLY */
1484
1485 void do_find_free_block(int argc, char *argv[])
1486 {
1487 blk64_t free_blk, goal, first_free = 0;
1488 int count;
1489 errcode_t retval;
1490 char *tmp;
1491
1492 if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1493 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1494 return;
1495 }
1496 if (check_fs_open(argv[0]))
1497 return;
1498
1499 if (argc > 1) {
1500 count = strtol(argv[1],&tmp,0);
1501 if (*tmp) {
1502 com_err(argv[0], 0, "Bad count - %s", argv[1]);
1503 return;
1504 }
1505 } else
1506 count = 1;
1507
1508 if (argc > 2) {
1509 goal = strtol(argv[2], &tmp, 0);
1510 if (*tmp) {
1511 com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1512 return;
1513 }
1514 }
1515 else
1516 goal = current_fs->super->s_first_data_block;
1517
1518 printf("Free blocks found: ");
1519 free_blk = goal - 1;
1520 while (count-- > 0) {
1521 retval = ext2fs_new_block2(current_fs, free_blk + 1, 0,
1522 &free_blk);
1523 if (first_free) {
1524 if (first_free == free_blk)
1525 break;
1526 } else
1527 first_free = free_blk;
1528 if (retval) {
1529 com_err("ext2fs_new_block", retval, 0);
1530 return;
1531 } else
1532 printf("%llu ", free_blk);
1533 }
1534 printf("\n");
1535 }
1536
1537 void do_find_free_inode(int argc, char *argv[])
1538 {
1539 ext2_ino_t free_inode, dir;
1540 int mode;
1541 int retval;
1542 char *tmp;
1543
1544 if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1545 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1546 return;
1547 }
1548 if (check_fs_open(argv[0]))
1549 return;
1550
1551 if (argc > 1) {
1552 dir = strtol(argv[1], &tmp, 0);
1553 if (*tmp) {
1554 com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1555 return;
1556 }
1557 }
1558 else
1559 dir = root;
1560 if (argc > 2) {
1561 mode = strtol(argv[2], &tmp, 0);
1562 if (*tmp) {
1563 com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1564 return;
1565 }
1566 } else
1567 mode = 010755;
1568
1569 retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1570 if (retval)
1571 com_err("ext2fs_new_inode", retval, 0);
1572 else
1573 printf("Free inode found: %u\n", free_inode);
1574 }
1575
1576 #ifndef READ_ONLY
1577 static errcode_t copy_file(int fd, ext2_ino_t newfile, int bufsize, int make_holes)
1578 {
1579 ext2_file_t e2_file;
1580 errcode_t retval;
1581 int got;
1582 unsigned int written;
1583 char *buf;
1584 char *ptr;
1585 char *zero_buf;
1586 int cmp;
1587
1588 retval = ext2fs_file_open(current_fs, newfile,
1589 EXT2_FILE_WRITE, &e2_file);
1590 if (retval)
1591 return retval;
1592
1593 retval = ext2fs_get_mem(bufsize, &buf);
1594 if (retval) {
1595 com_err("copy_file", retval, "can't allocate buffer\n");
1596 return retval;
1597 }
1598
1599 /* This is used for checking whether the whole block is zero */
1600 retval = ext2fs_get_memzero(bufsize, &zero_buf);
1601 if (retval) {
1602 com_err("copy_file", retval, "can't allocate buffer\n");
1603 ext2fs_free_mem(&buf);
1604 return retval;
1605 }
1606
1607 while (1) {
1608 got = read(fd, buf, bufsize);
1609 if (got == 0)
1610 break;
1611 if (got < 0) {
1612 retval = errno;
1613 goto fail;
1614 }
1615 ptr = buf;
1616
1617 /* Sparse copy */
1618 if (make_holes) {
1619 /* Check whether all is zero */
1620 cmp = memcmp(ptr, zero_buf, got);
1621 if (cmp == 0) {
1622 /* The whole block is zero, make a hole */
1623 retval = ext2fs_file_lseek(e2_file, got, EXT2_SEEK_CUR, NULL);
1624 if (retval)
1625 goto fail;
1626 got = 0;
1627 }
1628 }
1629
1630 /* Normal copy */
1631 while (got > 0) {
1632 retval = ext2fs_file_write(e2_file, ptr,
1633 got, &written);
1634 if (retval)
1635 goto fail;
1636
1637 got -= written;
1638 ptr += written;
1639 }
1640 }
1641 ext2fs_free_mem(&buf);
1642 ext2fs_free_mem(&zero_buf);
1643 retval = ext2fs_file_close(e2_file);
1644 return retval;
1645
1646 fail:
1647 ext2fs_free_mem(&buf);
1648 ext2fs_free_mem(&zero_buf);
1649 (void) ext2fs_file_close(e2_file);
1650 return retval;
1651 }
1652
1653
1654 void do_write(int argc, char *argv[])
1655 {
1656 int fd;
1657 struct stat statbuf;
1658 ext2_ino_t newfile;
1659 errcode_t retval;
1660 struct ext2_inode inode;
1661 int bufsize = IO_BUFSIZE;
1662 int make_holes = 0;
1663
1664 if (common_args_process(argc, argv, 3, 3, "write",
1665 "<native file> <new file>", CHECK_FS_RW))
1666 return;
1667
1668 fd = open(argv[1], O_RDONLY);
1669 if (fd < 0) {
1670 com_err(argv[1], errno, 0);
1671 return;
1672 }
1673 if (fstat(fd, &statbuf) < 0) {
1674 com_err(argv[1], errno, 0);
1675 close(fd);
1676 return;
1677 }
1678
1679 retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1680 if (retval == 0) {
1681 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1682 close(fd);
1683 return;
1684 }
1685
1686 retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1687 if (retval) {
1688 com_err(argv[0], retval, 0);
1689 close(fd);
1690 return;
1691 }
1692 printf("Allocated inode: %u\n", newfile);
1693 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1694 EXT2_FT_REG_FILE);
1695 if (retval == EXT2_ET_DIR_NO_SPACE) {
1696 retval = ext2fs_expand_dir(current_fs, cwd);
1697 if (retval) {
1698 com_err(argv[0], retval, "while expanding directory");
1699 close(fd);
1700 return;
1701 }
1702 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1703 EXT2_FT_REG_FILE);
1704 }
1705 if (retval) {
1706 com_err(argv[2], retval, 0);
1707 close(fd);
1708 return;
1709 }
1710 if (ext2fs_test_inode_bitmap2(current_fs->inode_map,newfile))
1711 com_err(argv[0], 0, "Warning: inode already set");
1712 ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1713 memset(&inode, 0, sizeof(inode));
1714 inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
1715 inode.i_atime = inode.i_ctime = inode.i_mtime =
1716 current_fs->now ? current_fs->now : time(0);
1717 inode.i_links_count = 1;
1718 inode.i_size = statbuf.st_size;
1719 if (current_fs->super->s_feature_incompat &
1720 EXT3_FEATURE_INCOMPAT_EXTENTS) {
1721 int i;
1722 struct ext3_extent_header *eh;
1723
1724 eh = (struct ext3_extent_header *) &inode.i_block[0];
1725 eh->eh_depth = 0;
1726 eh->eh_entries = 0;
1727 eh->eh_magic = EXT3_EXT_MAGIC;
1728 i = (sizeof(inode.i_block) - sizeof(*eh)) /
1729 sizeof(struct ext3_extent);
1730 eh->eh_max = ext2fs_cpu_to_le16(i);
1731 inode.i_flags |= EXT4_EXTENTS_FL;
1732 }
1733 if (debugfs_write_new_inode(newfile, &inode, argv[0])) {
1734 close(fd);
1735 return;
1736 }
1737 if (LINUX_S_ISREG(inode.i_mode)) {
1738 if (statbuf.st_blocks < statbuf.st_size / S_BLKSIZE) {
1739 make_holes = 1;
1740 /*
1741 * Use I/O blocksize as buffer size when
1742 * copying sparse files.
1743 */
1744 bufsize = statbuf.st_blksize;
1745 }
1746 retval = copy_file(fd, newfile, bufsize, make_holes);
1747 if (retval)
1748 com_err("copy_file", retval, 0);
1749 }
1750 close(fd);
1751 }
1752
1753 void do_mknod(int argc, char *argv[])
1754 {
1755 unsigned long mode, major, minor;
1756 ext2_ino_t newfile;
1757 errcode_t retval;
1758 struct ext2_inode inode;
1759 int filetype, nr;
1760
1761 if (check_fs_open(argv[0]))
1762 return;
1763 if (argc < 3 || argv[2][1]) {
1764 usage:
1765 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1766 return;
1767 }
1768 mode = minor = major = 0;
1769 switch (argv[2][0]) {
1770 case 'p':
1771 mode = LINUX_S_IFIFO;
1772 filetype = EXT2_FT_FIFO;
1773 nr = 3;
1774 break;
1775 case 'c':
1776 mode = LINUX_S_IFCHR;
1777 filetype = EXT2_FT_CHRDEV;
1778 nr = 5;
1779 break;
1780 case 'b':
1781 mode = LINUX_S_IFBLK;
1782 filetype = EXT2_FT_BLKDEV;
1783 nr = 5;
1784 break;
1785 default:
1786 filetype = 0;
1787 nr = 0;
1788 }
1789 if (nr == 5) {
1790 major = strtoul(argv[3], argv+3, 0);
1791 minor = strtoul(argv[4], argv+4, 0);
1792 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1793 nr = 0;
1794 }
1795 if (argc != nr)
1796 goto usage;
1797 if (check_fs_read_write(argv[0]))
1798 return;
1799 retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1800 if (retval) {
1801 com_err(argv[0], retval, 0);
1802 return;
1803 }
1804 printf("Allocated inode: %u\n", newfile);
1805 retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1806 if (retval == EXT2_ET_DIR_NO_SPACE) {
1807 retval = ext2fs_expand_dir(current_fs, cwd);
1808 if (retval) {
1809 com_err(argv[0], retval, "while expanding directory");
1810 return;
1811 }
1812 retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
1813 filetype);
1814 }
1815 if (retval) {
1816 com_err(argv[1], retval, 0);
1817 return;
1818 }
1819 if (ext2fs_test_inode_bitmap2(current_fs->inode_map,newfile))
1820 com_err(argv[0], 0, "Warning: inode already set");
1821 ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1822 memset(&inode, 0, sizeof(inode));
1823 inode.i_mode = mode;
1824 inode.i_atime = inode.i_ctime = inode.i_mtime =
1825 current_fs->now ? current_fs->now : time(0);
1826 if ((major < 256) && (minor < 256)) {
1827 inode.i_block[0] = major*256+minor;
1828 inode.i_block[1] = 0;
1829 } else {
1830 inode.i_block[0] = 0;
1831 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
1832 }
1833 inode.i_links_count = 1;
1834 if (debugfs_write_new_inode(newfile, &inode, argv[0]))
1835 return;
1836 }
1837
1838 void do_mkdir(int argc, char *argv[])
1839 {
1840 char *cp;
1841 ext2_ino_t parent;
1842 char *name;
1843 errcode_t retval;
1844
1845 if (common_args_process(argc, argv, 2, 2, "mkdir",
1846 "<filename>", CHECK_FS_RW))
1847 return;
1848
1849 cp = strrchr(argv[1], '/');
1850 if (cp) {
1851 *cp = 0;
1852 parent = string_to_inode(argv[1]);
1853 if (!parent) {
1854 com_err(argv[1], ENOENT, 0);
1855 return;
1856 }
1857 name = cp+1;
1858 } else {
1859 parent = cwd;
1860 name = argv[1];
1861 }
1862
1863 try_again:
1864 retval = ext2fs_mkdir(current_fs, parent, 0, name);
1865 if (retval == EXT2_ET_DIR_NO_SPACE) {
1866 retval = ext2fs_expand_dir(current_fs, parent);
1867 if (retval) {
1868 com_err(argv[0], retval, "while expanding directory");
1869 return;
1870 }
1871 goto try_again;
1872 }
1873 if (retval) {
1874 com_err("ext2fs_mkdir", retval, 0);
1875 return;
1876 }
1877
1878 }
1879
1880 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1881 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1882 blk64_t ref_block EXT2FS_ATTR((unused)),
1883 int ref_offset EXT2FS_ATTR((unused)),
1884 void *private EXT2FS_ATTR((unused)))
1885 {
1886 blk64_t block;
1887
1888 block = *blocknr;
1889 ext2fs_block_alloc_stats2(fs, block, -1);
1890 return 0;
1891 }
1892
1893 static void kill_file_by_inode(ext2_ino_t inode)
1894 {
1895 struct ext2_inode inode_buf;
1896
1897 if (debugfs_read_inode(inode, &inode_buf, 0))
1898 return;
1899 inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1900 if (debugfs_write_inode(inode, &inode_buf, 0))
1901 return;
1902 if (!ext2fs_inode_has_valid_blocks2(current_fs, &inode_buf))
1903 return;
1904
1905 ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
1906 release_blocks_proc, NULL);
1907 printf("\n");
1908 ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1909 LINUX_S_ISDIR(inode_buf.i_mode));
1910 }
1911
1912
1913 void do_kill_file(int argc, char *argv[])
1914 {
1915 ext2_ino_t inode_num;
1916
1917 if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1918 return;
1919
1920 kill_file_by_inode(inode_num);
1921 }
1922
1923 void do_rm(int argc, char *argv[])
1924 {
1925 int retval;
1926 ext2_ino_t inode_num;
1927 struct ext2_inode inode;
1928
1929 if (common_args_process(argc, argv, 2, 2, "rm",
1930 "<filename>", CHECK_FS_RW))
1931 return;
1932
1933 retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1934 if (retval) {
1935 com_err(argv[0], retval, "while trying to resolve filename");
1936 return;
1937 }
1938
1939 if (debugfs_read_inode(inode_num, &inode, argv[0]))
1940 return;
1941
1942 if (LINUX_S_ISDIR(inode.i_mode)) {
1943 com_err(argv[0], 0, "file is a directory");
1944 return;
1945 }
1946
1947 --inode.i_links_count;
1948 if (debugfs_write_inode(inode_num, &inode, argv[0]))
1949 return;
1950
1951 unlink_file_by_name(argv[1]);
1952 if (inode.i_links_count == 0)
1953 kill_file_by_inode(inode_num);
1954 }
1955
1956 struct rd_struct {
1957 ext2_ino_t parent;
1958 int empty;
1959 };
1960
1961 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1962 int entry EXT2FS_ATTR((unused)),
1963 struct ext2_dir_entry *dirent,
1964 int offset EXT2FS_ATTR((unused)),
1965 int blocksize EXT2FS_ATTR((unused)),
1966 char *buf EXT2FS_ATTR((unused)),
1967 void *private)
1968 {
1969 struct rd_struct *rds = (struct rd_struct *) private;
1970
1971 if (dirent->inode == 0)
1972 return 0;
1973 if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1974 return 0;
1975 if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1976 (dirent->name[1] == '.')) {
1977 rds->parent = dirent->inode;
1978 return 0;
1979 }
1980 rds->empty = 0;
1981 return 0;
1982 }
1983
1984 void do_rmdir(int argc, char *argv[])
1985 {
1986 int retval;
1987 ext2_ino_t inode_num;
1988 struct ext2_inode inode;
1989 struct rd_struct rds;
1990
1991 if (common_args_process(argc, argv, 2, 2, "rmdir",
1992 "<filename>", CHECK_FS_RW))
1993 return;
1994
1995 retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1996 if (retval) {
1997 com_err(argv[0], retval, "while trying to resolve filename");
1998 return;
1999 }
2000
2001 if (debugfs_read_inode(inode_num, &inode, argv[0]))
2002 return;
2003
2004 if (!LINUX_S_ISDIR(inode.i_mode)) {
2005 com_err(argv[0], 0, "file is not a directory");
2006 return;
2007 }
2008
2009 rds.parent = 0;
2010 rds.empty = 1;
2011
2012 retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
2013 0, rmdir_proc, &rds);
2014 if (retval) {
2015 com_err(argv[0], retval, "while iterating over directory");
2016 return;
2017 }
2018 if (rds.empty == 0) {
2019 com_err(argv[0], 0, "directory not empty");
2020 return;
2021 }
2022
2023 inode.i_links_count = 0;
2024 if (debugfs_write_inode(inode_num, &inode, argv[0]))
2025 return;
2026
2027 unlink_file_by_name(argv[1]);
2028 kill_file_by_inode(inode_num);
2029
2030 if (rds.parent) {
2031 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
2032 return;
2033 if (inode.i_links_count > 1)
2034 inode.i_links_count--;
2035 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
2036 return;
2037 }
2038 }
2039 #endif /* READ_ONLY */
2040
2041 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
2042 char *argv[] EXT2FS_ATTR((unused)))
2043 {
2044 if (current_fs)
2045 printf("Open mode: read-%s\n",
2046 current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
2047 printf("Filesystem in use: %s\n",
2048 current_fs ? current_fs->device_name : "--none--");
2049 }
2050
2051 #ifndef READ_ONLY
2052 void do_expand_dir(int argc, char *argv[])
2053 {
2054 ext2_ino_t inode;
2055 int retval;
2056
2057 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
2058 return;
2059
2060 retval = ext2fs_expand_dir(current_fs, inode);
2061 if (retval)
2062 com_err("ext2fs_expand_dir", retval, 0);
2063 return;
2064 }
2065
2066 void do_features(int argc, char *argv[])
2067 {
2068 int i;
2069
2070 if (check_fs_open(argv[0]))
2071 return;
2072
2073 if ((argc != 1) && check_fs_read_write(argv[0]))
2074 return;
2075 for (i=1; i < argc; i++) {
2076 if (e2p_edit_feature(argv[i],
2077 &current_fs->super->s_feature_compat, 0))
2078 com_err(argv[0], 0, "Unknown feature: %s\n",
2079 argv[i]);
2080 else
2081 ext2fs_mark_super_dirty(current_fs);
2082 }
2083 print_features(current_fs->super, stdout);
2084 }
2085 #endif /* READ_ONLY */
2086
2087 void do_bmap(int argc, char *argv[])
2088 {
2089 ext2_ino_t ino;
2090 blk64_t blk, pblk;
2091 int err;
2092 errcode_t errcode;
2093
2094 if (common_args_process(argc, argv, 3, 3, argv[0],
2095 "<file> logical_blk", 0))
2096 return;
2097
2098 ino = string_to_inode(argv[1]);
2099 if (!ino)
2100 return;
2101 blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
2102
2103 errcode = ext2fs_bmap2(current_fs, ino, 0, 0, 0, blk, 0, &pblk);
2104 if (errcode) {
2105 com_err(argv[0], errcode,
2106 "while mapping logical block %llu\n", blk);
2107 return;
2108 }
2109 printf("%llu\n", pblk);
2110 }
2111
2112 void do_imap(int argc, char *argv[])
2113 {
2114 ext2_ino_t ino;
2115 unsigned long group, block, block_nr, offset;
2116
2117 if (common_args_process(argc, argv, 2, 2, argv[0],
2118 "<file>", 0))
2119 return;
2120 ino = string_to_inode(argv[1]);
2121 if (!ino)
2122 return;
2123
2124 group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
2125 offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
2126 EXT2_INODE_SIZE(current_fs->super);
2127 block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
2128 if (!ext2fs_inode_table_loc(current_fs, (unsigned)group)) {
2129 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
2130 group);
2131 return;
2132 }
2133 block_nr = ext2fs_inode_table_loc(current_fs, (unsigned)group) +
2134 block;
2135 offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
2136
2137 printf("Inode %d is part of block group %lu\n"
2138 "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
2139 block_nr, offset);
2140
2141 }
2142
2143 #ifndef READ_ONLY
2144 void do_set_current_time(int argc, char *argv[])
2145 {
2146 time_t now;
2147
2148 if (common_args_process(argc, argv, 2, 2, argv[0],
2149 "<time>", 0))
2150 return;
2151
2152 now = string_to_time(argv[1]);
2153 if (now == ((time_t) -1)) {
2154 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
2155 argv[1]);
2156 return;
2157
2158 } else {
2159 printf("Setting current time to %s\n", time_to_string(now));
2160 current_fs->now = now;
2161 }
2162 }
2163 #endif /* READ_ONLY */
2164
2165 static int find_supp_feature(__u32 *supp, int feature_type, char *name)
2166 {
2167 int compat, bit, ret;
2168 unsigned int feature_mask;
2169
2170 if (name) {
2171 if (feature_type == E2P_FS_FEATURE)
2172 ret = e2p_string2feature(name, &compat, &feature_mask);
2173 else
2174 ret = e2p_jrnl_string2feature(name, &compat,
2175 &feature_mask);
2176 if (ret)
2177 return ret;
2178
2179 if (!(supp[compat] & feature_mask))
2180 return 1;
2181 } else {
2182 for (compat = 0; compat < 3; compat++) {
2183 for (bit = 0, feature_mask = 1; bit < 32;
2184 bit++, feature_mask <<= 1) {
2185 if (supp[compat] & feature_mask) {
2186 if (feature_type == E2P_FS_FEATURE)
2187 fprintf(stdout, " %s",
2188 e2p_feature2string(compat,
2189 feature_mask));
2190 else
2191 fprintf(stdout, " %s",
2192 e2p_jrnl_feature2string(compat,
2193 feature_mask));
2194 }
2195 }
2196 }
2197 fprintf(stdout, "\n");
2198 }
2199
2200 return 0;
2201 }
2202
2203 void do_supported_features(int argc, char *argv[])
2204 {
2205 int ret;
2206 __u32 supp[3] = { EXT2_LIB_FEATURE_COMPAT_SUPP,
2207 EXT2_LIB_FEATURE_INCOMPAT_SUPP,
2208 EXT2_LIB_FEATURE_RO_COMPAT_SUPP };
2209 __u32 jrnl_supp[3] = { JFS_KNOWN_COMPAT_FEATURES,
2210 JFS_KNOWN_INCOMPAT_FEATURES,
2211 JFS_KNOWN_ROCOMPAT_FEATURES };
2212
2213 if (argc > 1) {
2214 ret = find_supp_feature(supp, E2P_FS_FEATURE, argv[1]);
2215 if (ret) {
2216 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE,
2217 argv[1]);
2218 }
2219 if (ret)
2220 com_err(argv[0], 0, "Unknown feature: %s\n", argv[1]);
2221 else
2222 fprintf(stdout, "Supported feature: %s\n", argv[1]);
2223 } else {
2224 fprintf(stdout, "Supported features:");
2225 ret = find_supp_feature(supp, E2P_FS_FEATURE, NULL);
2226 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE, NULL);
2227 }
2228 }
2229
2230 #ifndef READ_ONLY
2231 void do_punch(int argc, char *argv[])
2232 {
2233 ext2_ino_t ino;
2234 blk64_t start, end;
2235 int err;
2236 errcode_t errcode;
2237
2238 if (common_args_process(argc, argv, 3, 4, argv[0],
2239 "<file> start_blk [end_blk]",
2240 CHECK_FS_RW | CHECK_FS_BITMAPS))
2241 return;
2242
2243 ino = string_to_inode(argv[1]);
2244 if (!ino)
2245 return;
2246 start = parse_ulong(argv[2], argv[0], "logical_block", &err);
2247 if (argc == 4)
2248 end = parse_ulong(argv[3], argv[0], "logical_block", &err);
2249 else
2250 end = ~0;
2251
2252 errcode = ext2fs_punch(current_fs, ino, 0, 0, start, end);
2253
2254 if (errcode) {
2255 com_err(argv[0], errcode,
2256 "while truncating inode %u from %llu to %llu\n", ino,
2257 (unsigned long long) start, (unsigned long long) end);
2258 return;
2259 }
2260 }
2261 #endif /* READ_ONLY */
2262
2263 void do_symlink(int argc, char *argv[])
2264 {
2265 char *cp;
2266 ext2_ino_t parent;
2267 char *name, *target;
2268 errcode_t retval;
2269
2270 if (common_args_process(argc, argv, 3, 3, "symlink",
2271 "<filename> <target>", CHECK_FS_RW))
2272 return;
2273
2274 cp = strrchr(argv[1], '/');
2275 if (cp) {
2276 *cp = 0;
2277 parent = string_to_inode(argv[1]);
2278 if (!parent) {
2279 com_err(argv[1], ENOENT, 0);
2280 return;
2281 }
2282 name = cp+1;
2283 } else {
2284 parent = cwd;
2285 name = argv[1];
2286 }
2287 target = argv[2];
2288
2289 try_again:
2290 retval = ext2fs_symlink(current_fs, parent, 0, name, target);
2291 if (retval == EXT2_ET_DIR_NO_SPACE) {
2292 retval = ext2fs_expand_dir(current_fs, parent);
2293 if (retval) {
2294 com_err(argv[0], retval, "while expanding directory");
2295 return;
2296 }
2297 goto try_again;
2298 }
2299 if (retval) {
2300 com_err("ext2fs_symlink", retval, 0);
2301 return;
2302 }
2303
2304 }
2305
2306 void do_dump_mmp(int argc EXT2FS_ATTR((unused)), char *argv[])
2307 {
2308 struct ext2_super_block *sb;
2309 struct mmp_struct *mmp_s;
2310 time_t t;
2311 errcode_t retval = 0;
2312
2313 if (check_fs_open(argv[0]))
2314 return;
2315
2316 sb = current_fs->super;
2317
2318 if (current_fs->mmp_buf == NULL) {
2319 retval = ext2fs_get_mem(current_fs->blocksize,
2320 &current_fs->mmp_buf);
2321 if (retval) {
2322 com_err(argv[0], retval, "allocating MMP buffer.\n");
2323 return;
2324 }
2325 }
2326
2327 mmp_s = current_fs->mmp_buf;
2328
2329 retval = ext2fs_mmp_read(current_fs, current_fs->super->s_mmp_block,
2330 current_fs->mmp_buf);
2331 if (retval) {
2332 com_err(argv[0], retval, "reading MMP block.\n");
2333 return;
2334 }
2335
2336 t = mmp_s->mmp_time;
2337 fprintf(stdout, "block_number: %llu\n", current_fs->super->s_mmp_block);
2338 fprintf(stdout, "update_interval: %d\n",
2339 current_fs->super->s_mmp_update_interval);
2340 fprintf(stdout, "check_interval: %d\n", mmp_s->mmp_check_interval);
2341 fprintf(stdout, "sequence: %08x\n", mmp_s->mmp_seq);
2342 fprintf(stdout, "time: %lld -- %s", mmp_s->mmp_time, ctime(&t));
2343 fprintf(stdout, "node_name: %s\n", mmp_s->mmp_nodename);
2344 fprintf(stdout, "device_name: %s\n", mmp_s->mmp_bdevname);
2345 fprintf(stdout, "magic: 0x%x\n", mmp_s->mmp_magic);
2346 }
2347
2348 static int source_file(const char *cmd_file, int ss_idx)
2349 {
2350 FILE *f;
2351 char buf[BUFSIZ];
2352 char *cp;
2353 int exit_status = 0;
2354 int retval;
2355
2356 if (strcmp(cmd_file, "-") == 0)
2357 f = stdin;
2358 else {
2359 f = fopen(cmd_file, "r");
2360 if (!f) {
2361 perror(cmd_file);
2362 exit(1);
2363 }
2364 }
2365 fflush(stdout);
2366 fflush(stderr);
2367 setbuf(stdout, NULL);
2368 setbuf(stderr, NULL);
2369 while (!feof(f)) {
2370 if (fgets(buf, sizeof(buf), f) == NULL)
2371 break;
2372 cp = strchr(buf, '\n');
2373 if (cp)
2374 *cp = 0;
2375 cp = strchr(buf, '\r');
2376 if (cp)
2377 *cp = 0;
2378 printf("debugfs: %s\n", buf);
2379 retval = ss_execute_line(ss_idx, buf);
2380 if (retval) {
2381 ss_perror(ss_idx, retval, buf);
2382 exit_status++;
2383 }
2384 }
2385 if (f != stdin)
2386 fclose(f);
2387 return exit_status;
2388 }
2389
2390 int main(int argc, char **argv)
2391 {
2392 int retval;
2393 const char *usage =
2394 "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] "
2395 "[-R request] [-V] ["
2396 #ifndef READ_ONLY
2397 "[-w] "
2398 #endif
2399 "[-c] device]";
2400 int c;
2401 int open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
2402 char *request = 0;
2403 int exit_status = 0;
2404 char *cmd_file = 0;
2405 blk64_t superblock = 0;
2406 blk64_t blocksize = 0;
2407 int catastrophic = 0;
2408 char *data_filename = 0;
2409 #ifdef READ_ONLY
2410 const char *opt_string = "icR:f:b:s:Vd:D";
2411 #else
2412 const char *opt_string = "iwcR:f:b:s:Vd:D";
2413 #endif
2414
2415 if (debug_prog_name == 0)
2416 #ifdef READ_ONLY
2417 debug_prog_name = "rdebugfs";
2418 #else
2419 debug_prog_name = "debugfs";
2420 #endif
2421 add_error_table(&et_ext2_error_table);
2422 fprintf (stderr, "%s %s (%s)\n", debug_prog_name,
2423 E2FSPROGS_VERSION, E2FSPROGS_DATE);
2424
2425 while ((c = getopt (argc, argv, opt_string)) != EOF) {
2426 switch (c) {
2427 case 'R':
2428 request = optarg;
2429 break;
2430 case 'f':
2431 cmd_file = optarg;
2432 break;
2433 case 'd':
2434 data_filename = optarg;
2435 break;
2436 case 'i':
2437 open_flags |= EXT2_FLAG_IMAGE_FILE;
2438 break;
2439 #ifndef READ_ONLY
2440 case 'w':
2441 open_flags |= EXT2_FLAG_RW;
2442 break;
2443 #endif
2444 case 'D':
2445 open_flags |= EXT2_FLAG_DIRECT_IO;
2446 break;
2447 case 'b':
2448 blocksize = parse_ulong(optarg, argv[0],
2449 "block size", 0);
2450 break;
2451 case 's':
2452 superblock = parse_ulong(optarg, argv[0],
2453 "superblock number", 0);
2454 break;
2455 case 'c':
2456 catastrophic = 1;
2457 break;
2458 case 'V':
2459 /* Print version number and exit */
2460 fprintf(stderr, "\tUsing %s\n",
2461 error_message(EXT2_ET_BASE));
2462 exit(0);
2463 default:
2464 com_err(argv[0], 0, usage, debug_prog_name);
2465 return 1;
2466 }
2467 }
2468 if (optind < argc)
2469 open_filesystem(argv[optind], open_flags,
2470 superblock, blocksize, catastrophic,
2471 data_filename);
2472
2473 sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL,
2474 &debug_cmds, &retval);
2475 if (retval) {
2476 ss_perror(sci_idx, retval, "creating invocation");
2477 exit(1);
2478 }
2479 ss_get_readline(sci_idx);
2480
2481 (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
2482 if (retval) {
2483 ss_perror(sci_idx, retval, "adding standard requests");
2484 exit (1);
2485 }
2486 if (extra_cmds)
2487 ss_add_request_table (sci_idx, extra_cmds, 1, &retval);
2488 if (retval) {
2489 ss_perror(sci_idx, retval, "adding extra requests");
2490 exit (1);
2491 }
2492 if (request) {
2493 retval = 0;
2494 retval = ss_execute_line(sci_idx, request);
2495 if (retval) {
2496 ss_perror(sci_idx, retval, request);
2497 exit_status++;
2498 }
2499 } else if (cmd_file) {
2500 exit_status = source_file(cmd_file, sci_idx);
2501 } else {
2502 ss_listen(sci_idx);
2503 }
2504
2505 ss_delete_invocation(sci_idx);
2506
2507 if (current_fs)
2508 close_filesystem();
2509
2510 remove_error_table(&et_ext2_error_table);
2511 return exit_status;
2512 }
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