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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 #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 quota_ctx_t current_qctx;
60 ext2_ino_t root, cwd;
61
62 static void open_filesystem(char *device, int open_flags, blk64_t superblock,
63 blk64_t blocksize, int catastrophic,
64 char *data_filename)
65 {
66 int retval;
67 io_channel data_io = 0;
68
69 if (superblock != 0 && blocksize == 0) {
70 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
71 current_fs = NULL;
72 return;
73 }
74
75 if (data_filename) {
76 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
77 com_err(device, 0,
78 "The -d option is only valid when reading an e2image file");
79 current_fs = NULL;
80 return;
81 }
82 retval = unix_io_manager->open(data_filename, 0, &data_io);
83 if (retval) {
84 com_err(data_filename, 0, "while opening data source");
85 current_fs = NULL;
86 return;
87 }
88 }
89
90 if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
91 com_err(device, 0,
92 "opening read-only because of catastrophic mode");
93 open_flags &= ~EXT2_FLAG_RW;
94 }
95 if (catastrophic)
96 open_flags |= EXT2_FLAG_SKIP_MMP;
97
98 retval = ext2fs_open(device, open_flags, superblock, blocksize,
99 unix_io_manager, &current_fs);
100 if (retval) {
101 com_err(device, retval, "while opening filesystem");
102 current_fs = NULL;
103 return;
104 }
105 current_fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
106
107 if (catastrophic)
108 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
109 else {
110 retval = ext2fs_read_inode_bitmap(current_fs);
111 if (retval) {
112 com_err(device, retval, "while reading inode bitmap");
113 goto errout;
114 }
115 retval = ext2fs_read_block_bitmap(current_fs);
116 if (retval) {
117 com_err(device, retval, "while reading block bitmap");
118 goto errout;
119 }
120 }
121
122 if (data_io) {
123 retval = ext2fs_set_data_io(current_fs, data_io);
124 if (retval) {
125 com_err(device, retval,
126 "while setting data source");
127 goto errout;
128 }
129 }
130
131 root = cwd = EXT2_ROOT_INO;
132 return;
133
134 errout:
135 retval = ext2fs_close_free(&current_fs);
136 if (retval)
137 com_err(device, retval, "while trying to close filesystem");
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 err = strtoblk(argv[0], optarg,
185 "superblock block number", &superblock);
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 if (current_qctx)
242 quota_release_context(&current_qctx);
243 retval = ext2fs_close_free(&current_fs);
244 if (retval)
245 com_err("ext2fs_close", retval, 0);
246 return;
247 }
248
249 void do_close_filesys(int argc, char **argv)
250 {
251 int c;
252
253 if (check_fs_open(argv[0]))
254 return;
255
256 reset_getopt();
257 while ((c = getopt (argc, argv, "a")) != EOF) {
258 switch (c) {
259 case 'a':
260 current_fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
261 break;
262 default:
263 goto print_usage;
264 }
265 }
266
267 if (argc > optind) {
268 print_usage:
269 com_err(0, 0, "Usage: close_filesys [-a]");
270 return;
271 }
272
273 close_filesystem();
274 }
275
276 #ifndef READ_ONLY
277 void do_init_filesys(int argc, char **argv)
278 {
279 struct ext2_super_block param;
280 errcode_t retval;
281 int err;
282 blk64_t blocks;
283
284 if (common_args_process(argc, argv, 3, 3, "initialize",
285 "<device> <blocks>", CHECK_FS_NOTOPEN))
286 return;
287
288 memset(&param, 0, sizeof(struct ext2_super_block));
289 err = strtoblk(argv[0], argv[2], "blocks count", &blocks);
290 if (err)
291 return;
292 ext2fs_blocks_count_set(&param, blocks);
293 retval = ext2fs_initialize(argv[1], 0, &param,
294 unix_io_manager, &current_fs);
295 if (retval) {
296 com_err(argv[1], retval, "while initializing filesystem");
297 current_fs = NULL;
298 return;
299 }
300 root = cwd = EXT2_ROOT_INO;
301 return;
302 }
303
304 static void print_features(struct ext2_super_block * s, FILE *f)
305 {
306 int i, j, printed=0;
307 __u32 *mask = &s->s_feature_compat, m;
308
309 fputs("Filesystem features:", f);
310 for (i=0; i <3; i++,mask++) {
311 for (j=0,m=1; j < 32; j++, m<<=1) {
312 if (*mask & m) {
313 fprintf(f, " %s", e2p_feature2string(i, m));
314 printed++;
315 }
316 }
317 }
318 if (printed == 0)
319 fputs("(none)", f);
320 fputs("\n", f);
321 }
322 #endif /* READ_ONLY */
323
324 static void print_bg_opts(ext2_filsys fs, dgrp_t group, int mask,
325 const char *str, int *first, FILE *f)
326 {
327 if (ext2fs_bg_flags_test(fs, group, mask)) {
328 if (*first) {
329 fputs(" [", f);
330 *first = 0;
331 } else
332 fputs(", ", f);
333 fputs(str, f);
334 }
335 }
336
337 void do_show_super_stats(int argc, char *argv[])
338 {
339 const char *units ="block";
340 dgrp_t i;
341 FILE *out;
342 int c, header_only = 0;
343 int numdirs = 0, first, gdt_csum;
344
345 reset_getopt();
346 while ((c = getopt (argc, argv, "h")) != EOF) {
347 switch (c) {
348 case 'h':
349 header_only++;
350 break;
351 default:
352 goto print_usage;
353 }
354 }
355 if (optind != argc) {
356 goto print_usage;
357 }
358 if (check_fs_open(argv[0]))
359 return;
360 out = open_pager();
361
362 if (EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super,
363 EXT4_FEATURE_RO_COMPAT_BIGALLOC))
364 units = "cluster";
365
366 list_super2(current_fs->super, out);
367 for (i=0; i < current_fs->group_desc_count; i++)
368 numdirs += ext2fs_bg_used_dirs_count(current_fs, i);
369 fprintf(out, "Directories: %d\n", numdirs);
370
371 if (header_only) {
372 close_pager(out);
373 return;
374 }
375
376 gdt_csum = EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super,
377 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
378 for (i = 0; i < current_fs->group_desc_count; i++) {
379 fprintf(out, " Group %2d: block bitmap at %llu, "
380 "inode bitmap at %llu, "
381 "inode table at %llu\n"
382 " %u free %s%s, "
383 "%u free %s, "
384 "%u used %s%s",
385 i, ext2fs_block_bitmap_loc(current_fs, i),
386 ext2fs_inode_bitmap_loc(current_fs, i),
387 ext2fs_inode_table_loc(current_fs, i),
388 ext2fs_bg_free_blocks_count(current_fs, i), units,
389 ext2fs_bg_free_blocks_count(current_fs, i) != 1 ?
390 "s" : "",
391 ext2fs_bg_free_inodes_count(current_fs, i),
392 ext2fs_bg_free_inodes_count(current_fs, i) != 1 ?
393 "inodes" : "inode",
394 ext2fs_bg_used_dirs_count(current_fs, i),
395 ext2fs_bg_used_dirs_count(current_fs, i) != 1 ? "directories"
396 : "directory", gdt_csum ? ", " : "\n");
397 if (gdt_csum)
398 fprintf(out, "%u unused %s\n",
399 ext2fs_bg_itable_unused(current_fs, i),
400 ext2fs_bg_itable_unused(current_fs, i) != 1 ?
401 "inodes" : "inode");
402 first = 1;
403 print_bg_opts(current_fs, i, EXT2_BG_INODE_UNINIT, "Inode not init",
404 &first, out);
405 print_bg_opts(current_fs, i, EXT2_BG_BLOCK_UNINIT, "Block not init",
406 &first, out);
407 if (gdt_csum) {
408 fprintf(out, "%sChecksum 0x%04x",
409 first ? " [":", ", ext2fs_bg_checksum(current_fs, i));
410 first = 0;
411 }
412 if (!first)
413 fputs("]\n", out);
414 }
415 close_pager(out);
416 return;
417 print_usage:
418 fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
419 }
420
421 #ifndef READ_ONLY
422 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
423 char **argv EXT2FS_ATTR((unused)))
424 {
425 if (check_fs_open(argv[0]))
426 return;
427 if (check_fs_read_write(argv[0]))
428 return;
429
430 if (argv[1] && !strcmp(argv[1], "-clean"))
431 current_fs->super->s_state |= EXT2_VALID_FS;
432 else
433 current_fs->super->s_state &= ~EXT2_VALID_FS;
434 ext2fs_mark_super_dirty(current_fs);
435 }
436 #endif /* READ_ONLY */
437
438 struct list_blocks_struct {
439 FILE *f;
440 e2_blkcnt_t total;
441 blk64_t first_block, last_block;
442 e2_blkcnt_t first_bcnt, last_bcnt;
443 e2_blkcnt_t first;
444 };
445
446 static void finish_range(struct list_blocks_struct *lb)
447 {
448 if (lb->first_block == 0)
449 return;
450 if (lb->first)
451 lb->first = 0;
452 else
453 fprintf(lb->f, ", ");
454 if (lb->first_block == lb->last_block)
455 fprintf(lb->f, "(%lld):%llu",
456 (long long)lb->first_bcnt, lb->first_block);
457 else
458 fprintf(lb->f, "(%lld-%lld):%llu-%llu",
459 (long long)lb->first_bcnt, (long long)lb->last_bcnt,
460 lb->first_block, lb->last_block);
461 lb->first_block = 0;
462 }
463
464 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
465 blk64_t *blocknr, e2_blkcnt_t blockcnt,
466 blk64_t ref_block EXT2FS_ATTR((unused)),
467 int ref_offset EXT2FS_ATTR((unused)),
468 void *private)
469 {
470 struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
471
472 lb->total++;
473 if (blockcnt >= 0) {
474 /*
475 * See if we can add on to the existing range (if it exists)
476 */
477 if (lb->first_block &&
478 (lb->last_block+1 == *blocknr) &&
479 (lb->last_bcnt+1 == blockcnt)) {
480 lb->last_block = *blocknr;
481 lb->last_bcnt = blockcnt;
482 return 0;
483 }
484 /*
485 * Start a new range.
486 */
487 finish_range(lb);
488 lb->first_block = lb->last_block = *blocknr;
489 lb->first_bcnt = lb->last_bcnt = blockcnt;
490 return 0;
491 }
492 /*
493 * Not a normal block. Always force a new range.
494 */
495 finish_range(lb);
496 if (lb->first)
497 lb->first = 0;
498 else
499 fprintf(lb->f, ", ");
500 if (blockcnt == -1)
501 fprintf(lb->f, "(IND):%llu", (unsigned long long) *blocknr);
502 else if (blockcnt == -2)
503 fprintf(lb->f, "(DIND):%llu", (unsigned long long) *blocknr);
504 else if (blockcnt == -3)
505 fprintf(lb->f, "(TIND):%llu", (unsigned long long) *blocknr);
506 return 0;
507 }
508
509 static void dump_xattr_string(FILE *out, const char *str, int len)
510 {
511 int printable = 0;
512 int i;
513
514 /* check: is string "printable enough?" */
515 for (i = 0; i < len; i++)
516 if (isprint(str[i]))
517 printable++;
518
519 if (printable <= len*7/8)
520 printable = 0;
521
522 for (i = 0; i < len; i++)
523 if (printable)
524 fprintf(out, isprint(str[i]) ? "%c" : "\\%03o",
525 (unsigned char)str[i]);
526 else
527 fprintf(out, "%02x ", (unsigned char)str[i]);
528 }
529
530 static void internal_dump_inode_extra(FILE *out,
531 const char *prefix EXT2FS_ATTR((unused)),
532 ext2_ino_t inode_num EXT2FS_ATTR((unused)),
533 struct ext2_inode_large *inode)
534 {
535 struct ext2_ext_attr_entry *entry;
536 __u32 *magic;
537 char *start, *end;
538 unsigned int storage_size;
539
540 fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
541 if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
542 EXT2_GOOD_OLD_INODE_SIZE) {
543 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
544 inode->i_extra_isize);
545 return;
546 }
547 storage_size = EXT2_INODE_SIZE(current_fs->super) -
548 EXT2_GOOD_OLD_INODE_SIZE -
549 inode->i_extra_isize;
550 magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
551 inode->i_extra_isize);
552 if (*magic == EXT2_EXT_ATTR_MAGIC) {
553 fprintf(out, "Extended attributes stored in inode body: \n");
554 end = (char *) inode + EXT2_INODE_SIZE(current_fs->super);
555 start = (char *) magic + sizeof(__u32);
556 entry = (struct ext2_ext_attr_entry *) start;
557 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
558 struct ext2_ext_attr_entry *next =
559 EXT2_EXT_ATTR_NEXT(entry);
560 if (entry->e_value_size > storage_size ||
561 (char *) next >= end) {
562 fprintf(out, "invalid EA entry in inode\n");
563 return;
564 }
565 fprintf(out, " ");
566 dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry),
567 entry->e_name_len);
568 fprintf(out, " = \"");
569 dump_xattr_string(out, start + entry->e_value_offs,
570 entry->e_value_size);
571 fprintf(out, "\" (%u)\n", entry->e_value_size);
572 entry = next;
573 }
574 }
575 }
576
577 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
578 {
579 struct list_blocks_struct lb;
580
581 fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
582 lb.total = 0;
583 lb.first_block = 0;
584 lb.f = f;
585 lb.first = 1;
586 ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
587 list_blocks_proc, (void *)&lb);
588 finish_range(&lb);
589 if (lb.total)
590 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
591 fprintf(f,"\n");
592 }
593
594 static int int_log10(unsigned long long arg)
595 {
596 int l = 0;
597
598 arg = arg / 10;
599 while (arg) {
600 l++;
601 arg = arg / 10;
602 }
603 return l;
604 }
605
606 #define DUMP_LEAF_EXTENTS 0x01
607 #define DUMP_NODE_EXTENTS 0x02
608 #define DUMP_EXTENT_TABLE 0x04
609
610 static void dump_extents(FILE *f, const char *prefix, ext2_ino_t ino,
611 int flags, int logical_width, int physical_width)
612 {
613 ext2_extent_handle_t handle;
614 struct ext2fs_extent extent;
615 struct ext2_extent_info info;
616 int op = EXT2_EXTENT_ROOT;
617 unsigned int printed = 0;
618 errcode_t errcode;
619
620 errcode = ext2fs_extent_open(current_fs, ino, &handle);
621 if (errcode)
622 return;
623
624 if (flags & DUMP_EXTENT_TABLE)
625 fprintf(f, "Level Entries %*s %*s Length Flags\n",
626 (logical_width*2)+3, "Logical",
627 (physical_width*2)+3, "Physical");
628 else
629 fprintf(f, "%sEXTENTS:\n%s", prefix, prefix);
630
631 while (1) {
632 errcode = ext2fs_extent_get(handle, op, &extent);
633
634 if (errcode)
635 break;
636
637 op = EXT2_EXTENT_NEXT;
638
639 if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
640 continue;
641
642 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
643 if ((flags & DUMP_LEAF_EXTENTS) == 0)
644 continue;
645 } else {
646 if ((flags & DUMP_NODE_EXTENTS) == 0)
647 continue;
648 }
649
650 errcode = ext2fs_extent_get_info(handle, &info);
651 if (errcode)
652 continue;
653
654 if (!(extent.e_flags & EXT2_EXTENT_FLAGS_LEAF)) {
655 if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
656 continue;
657
658 if (flags & DUMP_EXTENT_TABLE) {
659 fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
660 "%*llu%*s %6u\n",
661 info.curr_level, info.max_depth,
662 info.curr_entry, info.num_entries,
663 logical_width,
664 extent.e_lblk,
665 logical_width,
666 extent.e_lblk + (extent.e_len - 1),
667 physical_width,
668 extent.e_pblk,
669 physical_width+3, "", extent.e_len);
670 continue;
671 }
672
673 fprintf(f, "%s(ETB%d):%lld",
674 printed ? ", " : "", info.curr_level,
675 extent.e_pblk);
676 printed = 1;
677 continue;
678 }
679
680 if (flags & DUMP_EXTENT_TABLE) {
681 fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
682 "%*llu - %*llu %6u %s\n",
683 info.curr_level, info.max_depth,
684 info.curr_entry, info.num_entries,
685 logical_width,
686 extent.e_lblk,
687 logical_width,
688 extent.e_lblk + (extent.e_len - 1),
689 physical_width,
690 extent.e_pblk,
691 physical_width,
692 extent.e_pblk + (extent.e_len - 1),
693 extent.e_len,
694 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
695 "Uninit" : "");
696 continue;
697 }
698
699 if (extent.e_len == 0)
700 continue;
701 else if (extent.e_len == 1)
702 fprintf(f,
703 "%s(%lld%s):%lld",
704 printed ? ", " : "",
705 extent.e_lblk,
706 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
707 "[u]" : "",
708 extent.e_pblk);
709 else
710 fprintf(f,
711 "%s(%lld-%lld%s):%lld-%lld",
712 printed ? ", " : "",
713 extent.e_lblk,
714 extent.e_lblk + (extent.e_len - 1),
715 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
716 "[u]" : "",
717 extent.e_pblk,
718 extent.e_pblk + (extent.e_len - 1));
719 printed = 1;
720 }
721 if (printed)
722 fprintf(f, "\n");
723 }
724
725 void internal_dump_inode(FILE *out, const char *prefix,
726 ext2_ino_t inode_num, struct ext2_inode *inode,
727 int do_dump_blocks)
728 {
729 const char *i_type;
730 char frag, fsize;
731 int os = current_fs->super->s_creator_os;
732 struct ext2_inode_large *large_inode;
733 int is_large_inode = 0;
734
735 if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
736 is_large_inode = 1;
737 large_inode = (struct ext2_inode_large *) inode;
738
739 if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
740 else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
741 else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
742 else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
743 else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
744 else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
745 else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
746 else i_type = "bad type";
747 fprintf(out, "%sInode: %u Type: %s ", prefix, inode_num, i_type);
748 fprintf(out, "%sMode: %04o Flags: 0x%x\n",
749 prefix, inode->i_mode & 0777, inode->i_flags);
750 if (is_large_inode && large_inode->i_extra_isize >= 24) {
751 fprintf(out, "%sGeneration: %u Version: 0x%08x:%08x\n",
752 prefix, inode->i_generation, large_inode->i_version_hi,
753 inode->osd1.linux1.l_i_version);
754 } else {
755 fprintf(out, "%sGeneration: %u Version: 0x%08x\n", prefix,
756 inode->i_generation, inode->osd1.linux1.l_i_version);
757 }
758 fprintf(out, "%sUser: %5d Group: %5d Size: ",
759 prefix, inode_uid(*inode), inode_gid(*inode));
760 if (LINUX_S_ISREG(inode->i_mode))
761 fprintf(out, "%llu\n", EXT2_I_SIZE(inode));
762 else
763 fprintf(out, "%d\n", inode->i_size);
764 if (os == EXT2_OS_HURD)
765 fprintf(out,
766 "%sFile ACL: %d Directory ACL: %d Translator: %d\n",
767 prefix,
768 inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
769 inode->osd1.hurd1.h_i_translator);
770 else
771 fprintf(out, "%sFile ACL: %llu Directory ACL: %d\n",
772 prefix,
773 inode->i_file_acl | ((long long)
774 (inode->osd2.linux2.l_i_file_acl_high) << 32),
775 LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
776 if (os == EXT2_OS_LINUX)
777 fprintf(out, "%sLinks: %d Blockcount: %llu\n",
778 prefix, inode->i_links_count,
779 (((unsigned long long)
780 inode->osd2.linux2.l_i_blocks_hi << 32)) +
781 inode->i_blocks);
782 else
783 fprintf(out, "%sLinks: %d Blockcount: %u\n",
784 prefix, inode->i_links_count, inode->i_blocks);
785 switch (os) {
786 case EXT2_OS_HURD:
787 frag = inode->osd2.hurd2.h_i_frag;
788 fsize = inode->osd2.hurd2.h_i_fsize;
789 break;
790 default:
791 frag = fsize = 0;
792 }
793 fprintf(out, "%sFragment: Address: %d Number: %d Size: %d\n",
794 prefix, inode->i_faddr, frag, fsize);
795 if (is_large_inode && large_inode->i_extra_isize >= 24) {
796 fprintf(out, "%s ctime: 0x%08x:%08x -- %s", prefix,
797 inode->i_ctime, large_inode->i_ctime_extra,
798 time_to_string(inode->i_ctime));
799 fprintf(out, "%s atime: 0x%08x:%08x -- %s", prefix,
800 inode->i_atime, large_inode->i_atime_extra,
801 time_to_string(inode->i_atime));
802 fprintf(out, "%s mtime: 0x%08x:%08x -- %s", prefix,
803 inode->i_mtime, large_inode->i_mtime_extra,
804 time_to_string(inode->i_mtime));
805 fprintf(out, "%scrtime: 0x%08x:%08x -- %s", prefix,
806 large_inode->i_crtime, large_inode->i_crtime_extra,
807 time_to_string(large_inode->i_crtime));
808 } else {
809 fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
810 time_to_string(inode->i_ctime));
811 fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
812 time_to_string(inode->i_atime));
813 fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
814 time_to_string(inode->i_mtime));
815 }
816 if (inode->i_dtime)
817 fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
818 time_to_string(inode->i_dtime));
819 if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
820 internal_dump_inode_extra(out, prefix, inode_num,
821 (struct ext2_inode_large *) inode);
822 if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
823 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
824 (int) inode->i_size, (char *)inode->i_block);
825 else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
826 int major, minor;
827 const char *devnote;
828
829 if (inode->i_block[0]) {
830 major = (inode->i_block[0] >> 8) & 255;
831 minor = inode->i_block[0] & 255;
832 devnote = "";
833 } else {
834 major = (inode->i_block[1] & 0xfff00) >> 8;
835 minor = ((inode->i_block[1] & 0xff) |
836 ((inode->i_block[1] >> 12) & 0xfff00));
837 devnote = "(New-style) ";
838 }
839 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
840 devnote, major, minor, major, minor);
841 } else if (do_dump_blocks) {
842 if (inode->i_flags & EXT4_EXTENTS_FL)
843 dump_extents(out, prefix, inode_num,
844 DUMP_LEAF_EXTENTS|DUMP_NODE_EXTENTS, 0, 0);
845 else
846 dump_blocks(out, prefix, inode_num);
847 }
848 }
849
850 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
851 {
852 FILE *out;
853
854 out = open_pager();
855 internal_dump_inode(out, "", inode_num, inode, 1);
856 close_pager(out);
857 }
858
859 void do_stat(int argc, char *argv[])
860 {
861 ext2_ino_t inode;
862 struct ext2_inode * inode_buf;
863
864 if (check_fs_open(argv[0]))
865 return;
866
867 inode_buf = (struct ext2_inode *)
868 malloc(EXT2_INODE_SIZE(current_fs->super));
869 if (!inode_buf) {
870 fprintf(stderr, "do_stat: can't allocate buffer\n");
871 return;
872 }
873
874 if (common_inode_args_process(argc, argv, &inode, 0)) {
875 free(inode_buf);
876 return;
877 }
878
879 if (debugfs_read_inode_full(inode, inode_buf, argv[0],
880 EXT2_INODE_SIZE(current_fs->super))) {
881 free(inode_buf);
882 return;
883 }
884
885 dump_inode(inode, inode_buf);
886 free(inode_buf);
887 return;
888 }
889
890 void do_dump_extents(int argc, char **argv)
891 {
892 struct ext2_inode inode;
893 ext2_ino_t ino;
894 FILE *out;
895 int c, flags = 0;
896 int logical_width;
897 int physical_width;
898
899 reset_getopt();
900 while ((c = getopt(argc, argv, "nl")) != EOF) {
901 switch (c) {
902 case 'n':
903 flags |= DUMP_NODE_EXTENTS;
904 break;
905 case 'l':
906 flags |= DUMP_LEAF_EXTENTS;
907 break;
908 }
909 }
910
911 if (argc != optind + 1) {
912 com_err(0, 0, "Usage: dump_extents [-n] [-l] file");
913 return;
914 }
915
916 if (flags == 0)
917 flags = DUMP_NODE_EXTENTS | DUMP_LEAF_EXTENTS;
918 flags |= DUMP_EXTENT_TABLE;
919
920 if (check_fs_open(argv[0]))
921 return;
922
923 ino = string_to_inode(argv[optind]);
924 if (ino == 0)
925 return;
926
927 if (debugfs_read_inode(ino, &inode, argv[0]))
928 return;
929
930 if ((inode.i_flags & EXT4_EXTENTS_FL) == 0) {
931 fprintf(stderr, "%s: does not uses extent block maps\n",
932 argv[optind]);
933 return;
934 }
935
936 logical_width = int_log10((EXT2_I_SIZE(&inode)+current_fs->blocksize-1)/
937 current_fs->blocksize) + 1;
938 if (logical_width < 5)
939 logical_width = 5;
940 physical_width = int_log10(ext2fs_blocks_count(current_fs->super)) + 1;
941 if (physical_width < 5)
942 physical_width = 5;
943
944 out = open_pager();
945 dump_extents(out, "", ino, flags, logical_width, physical_width);
946 close_pager(out);
947 return;
948 }
949
950 static int print_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
951 blk64_t *blocknr,
952 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
953 blk64_t ref_block EXT2FS_ATTR((unused)),
954 int ref_offset EXT2FS_ATTR((unused)),
955 void *private EXT2FS_ATTR((unused)))
956 {
957 printf("%llu ", *blocknr);
958 return 0;
959 }
960
961 void do_blocks(int argc, char *argv[])
962 {
963 ext2_ino_t inode;
964
965 if (check_fs_open(argv[0]))
966 return;
967
968 if (common_inode_args_process(argc, argv, &inode, 0)) {
969 return;
970 }
971
972 ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
973 print_blocks_proc, NULL);
974 fputc('\n', stdout);
975 return;
976 }
977
978 void do_chroot(int argc, char *argv[])
979 {
980 ext2_ino_t inode;
981 int retval;
982
983 if (common_inode_args_process(argc, argv, &inode, 0))
984 return;
985
986 retval = ext2fs_check_directory(current_fs, inode);
987 if (retval) {
988 com_err(argv[1], retval, 0);
989 return;
990 }
991 root = inode;
992 }
993
994 #ifndef READ_ONLY
995 void do_clri(int argc, char *argv[])
996 {
997 ext2_ino_t inode;
998 struct ext2_inode inode_buf;
999
1000 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1001 return;
1002
1003 if (debugfs_read_inode(inode, &inode_buf, argv[0]))
1004 return;
1005 memset(&inode_buf, 0, sizeof(inode_buf));
1006 if (debugfs_write_inode(inode, &inode_buf, argv[0]))
1007 return;
1008 }
1009
1010 void do_freei(int argc, char *argv[])
1011 {
1012 unsigned int len = 1;
1013 int err = 0;
1014 ext2_ino_t inode;
1015
1016 if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1017 CHECK_FS_RW | CHECK_FS_BITMAPS))
1018 return;
1019 if (check_fs_read_write(argv[0]))
1020 return;
1021
1022 inode = string_to_inode(argv[1]);
1023 if (!inode)
1024 return;
1025
1026 if (argc == 3) {
1027 len = parse_ulong(argv[2], argv[0], "length", &err);
1028 if (err)
1029 return;
1030 }
1031
1032 if (len == 1 &&
1033 !ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1034 com_err(argv[0], 0, "Warning: inode already clear");
1035 while (len-- > 0)
1036 ext2fs_unmark_inode_bitmap2(current_fs->inode_map, inode++);
1037 ext2fs_mark_ib_dirty(current_fs);
1038 }
1039
1040 void do_seti(int argc, char *argv[])
1041 {
1042 unsigned int len = 1;
1043 int err = 0;
1044 ext2_ino_t inode;
1045
1046 if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1047 CHECK_FS_RW | CHECK_FS_BITMAPS))
1048 return;
1049 if (check_fs_read_write(argv[0]))
1050 return;
1051
1052 inode = string_to_inode(argv[1]);
1053 if (!inode)
1054 return;
1055
1056 if (argc == 3) {
1057 len = parse_ulong(argv[2], argv[0], "length", &err);
1058 if (err)
1059 return;
1060 }
1061
1062 if ((len == 1) &&
1063 ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1064 com_err(argv[0], 0, "Warning: inode already set");
1065 while (len-- > 0)
1066 ext2fs_mark_inode_bitmap2(current_fs->inode_map, inode++);
1067 ext2fs_mark_ib_dirty(current_fs);
1068 }
1069 #endif /* READ_ONLY */
1070
1071 void do_testi(int argc, char *argv[])
1072 {
1073 ext2_ino_t inode;
1074
1075 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
1076 return;
1077
1078 if (ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1079 printf("Inode %u is marked in use\n", inode);
1080 else
1081 printf("Inode %u is not in use\n", inode);
1082 }
1083
1084 #ifndef READ_ONLY
1085 void do_freeb(int argc, char *argv[])
1086 {
1087 blk64_t block;
1088 blk64_t count = 1;
1089
1090 if (common_block_args_process(argc, argv, &block, &count))
1091 return;
1092 if (check_fs_read_write(argv[0]))
1093 return;
1094 while (count-- > 0) {
1095 if (!ext2fs_test_block_bitmap2(current_fs->block_map,block))
1096 com_err(argv[0], 0, "Warning: block %llu already clear",
1097 block);
1098 ext2fs_unmark_block_bitmap2(current_fs->block_map,block);
1099 block++;
1100 }
1101 ext2fs_mark_bb_dirty(current_fs);
1102 }
1103
1104 void do_setb(int argc, char *argv[])
1105 {
1106 blk64_t block;
1107 blk64_t count = 1;
1108
1109 if (common_block_args_process(argc, argv, &block, &count))
1110 return;
1111 if (check_fs_read_write(argv[0]))
1112 return;
1113 while (count-- > 0) {
1114 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1115 com_err(argv[0], 0, "Warning: block %llu already set",
1116 block);
1117 ext2fs_mark_block_bitmap2(current_fs->block_map,block);
1118 block++;
1119 }
1120 ext2fs_mark_bb_dirty(current_fs);
1121 }
1122 #endif /* READ_ONLY */
1123
1124 void do_testb(int argc, char *argv[])
1125 {
1126 blk64_t block;
1127 blk64_t count = 1;
1128
1129 if (common_block_args_process(argc, argv, &block, &count))
1130 return;
1131 while (count-- > 0) {
1132 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1133 printf("Block %llu marked in use\n", block);
1134 else
1135 printf("Block %llu not in use\n", block);
1136 block++;
1137 }
1138 }
1139
1140 #ifndef READ_ONLY
1141 static void modify_u8(char *com, const char *prompt,
1142 const char *format, __u8 *val)
1143 {
1144 char buf[200];
1145 unsigned long v;
1146 char *tmp;
1147
1148 sprintf(buf, format, *val);
1149 printf("%30s [%s] ", prompt, buf);
1150 if (!fgets(buf, sizeof(buf), stdin))
1151 return;
1152 if (buf[strlen (buf) - 1] == '\n')
1153 buf[strlen (buf) - 1] = '\0';
1154 if (!buf[0])
1155 return;
1156 v = strtoul(buf, &tmp, 0);
1157 if (*tmp)
1158 com_err(com, 0, "Bad value - %s", buf);
1159 else
1160 *val = v;
1161 }
1162
1163 static void modify_u16(char *com, const char *prompt,
1164 const char *format, __u16 *val)
1165 {
1166 char buf[200];
1167 unsigned long v;
1168 char *tmp;
1169
1170 sprintf(buf, format, *val);
1171 printf("%30s [%s] ", prompt, buf);
1172 if (!fgets(buf, sizeof(buf), stdin))
1173 return;
1174 if (buf[strlen (buf) - 1] == '\n')
1175 buf[strlen (buf) - 1] = '\0';
1176 if (!buf[0])
1177 return;
1178 v = strtoul(buf, &tmp, 0);
1179 if (*tmp)
1180 com_err(com, 0, "Bad value - %s", buf);
1181 else
1182 *val = v;
1183 }
1184
1185 static void modify_u32(char *com, const char *prompt,
1186 const char *format, __u32 *val)
1187 {
1188 char buf[200];
1189 unsigned long v;
1190 char *tmp;
1191
1192 sprintf(buf, format, *val);
1193 printf("%30s [%s] ", prompt, buf);
1194 if (!fgets(buf, sizeof(buf), stdin))
1195 return;
1196 if (buf[strlen (buf) - 1] == '\n')
1197 buf[strlen (buf) - 1] = '\0';
1198 if (!buf[0])
1199 return;
1200 v = strtoul(buf, &tmp, 0);
1201 if (*tmp)
1202 com_err(com, 0, "Bad value - %s", buf);
1203 else
1204 *val = v;
1205 }
1206
1207
1208 void do_modify_inode(int argc, char *argv[])
1209 {
1210 struct ext2_inode inode;
1211 ext2_ino_t inode_num;
1212 int i;
1213 unsigned char *frag, *fsize;
1214 char buf[80];
1215 int os;
1216 const char *hex_format = "0x%x";
1217 const char *octal_format = "0%o";
1218 const char *decimal_format = "%d";
1219 const char *unsignedlong_format = "%lu";
1220
1221 if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1222 return;
1223
1224 os = current_fs->super->s_creator_os;
1225
1226 if (debugfs_read_inode(inode_num, &inode, argv[1]))
1227 return;
1228
1229 modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
1230 modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
1231 modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
1232 modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
1233 modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
1234 modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
1235 modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
1236 modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
1237 modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
1238 if (os == EXT2_OS_LINUX)
1239 modify_u16(argv[0], "Block count high", unsignedlong_format,
1240 &inode.osd2.linux2.l_i_blocks_hi);
1241 modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
1242 modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
1243 modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
1244 #if 0
1245 modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
1246 #endif
1247 modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
1248 if (LINUX_S_ISDIR(inode.i_mode))
1249 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
1250 else
1251 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
1252
1253 if (os == EXT2_OS_HURD)
1254 modify_u32(argv[0], "Translator Block",
1255 decimal_format, &inode.osd1.hurd1.h_i_translator);
1256
1257 modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
1258 switch (os) {
1259 case EXT2_OS_HURD:
1260 frag = &inode.osd2.hurd2.h_i_frag;
1261 fsize = &inode.osd2.hurd2.h_i_fsize;
1262 break;
1263 default:
1264 frag = fsize = 0;
1265 }
1266 if (frag)
1267 modify_u8(argv[0], "Fragment number", decimal_format, frag);
1268 if (fsize)
1269 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
1270
1271 for (i=0; i < EXT2_NDIR_BLOCKS; i++) {
1272 sprintf(buf, "Direct Block #%d", i);
1273 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
1274 }
1275 modify_u32(argv[0], "Indirect Block", decimal_format,
1276 &inode.i_block[EXT2_IND_BLOCK]);
1277 modify_u32(argv[0], "Double Indirect Block", decimal_format,
1278 &inode.i_block[EXT2_DIND_BLOCK]);
1279 modify_u32(argv[0], "Triple Indirect Block", decimal_format,
1280 &inode.i_block[EXT2_TIND_BLOCK]);
1281 if (debugfs_write_inode(inode_num, &inode, argv[1]))
1282 return;
1283 }
1284 #endif /* READ_ONLY */
1285
1286 void do_change_working_dir(int argc, char *argv[])
1287 {
1288 ext2_ino_t inode;
1289 int retval;
1290
1291 if (common_inode_args_process(argc, argv, &inode, 0))
1292 return;
1293
1294 retval = ext2fs_check_directory(current_fs, inode);
1295 if (retval) {
1296 com_err(argv[1], retval, 0);
1297 return;
1298 }
1299 cwd = inode;
1300 return;
1301 }
1302
1303 void do_print_working_directory(int argc, char *argv[])
1304 {
1305 int retval;
1306 char *pathname = NULL;
1307
1308 if (common_args_process(argc, argv, 1, 1,
1309 "print_working_directory", "", 0))
1310 return;
1311
1312 retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
1313 if (retval) {
1314 com_err(argv[0], retval,
1315 "while trying to get pathname of cwd");
1316 }
1317 printf("[pwd] INODE: %6u PATH: %s\n",
1318 cwd, pathname ? pathname : "NULL");
1319 if (pathname) {
1320 free(pathname);
1321 pathname = NULL;
1322 }
1323 retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
1324 if (retval) {
1325 com_err(argv[0], retval,
1326 "while trying to get pathname of root");
1327 }
1328 printf("[root] INODE: %6u PATH: %s\n",
1329 root, pathname ? pathname : "NULL");
1330 if (pathname) {
1331 free(pathname);
1332 pathname = NULL;
1333 }
1334 return;
1335 }
1336
1337 #ifndef READ_ONLY
1338 static void make_link(char *sourcename, char *destname)
1339 {
1340 ext2_ino_t ino;
1341 struct ext2_inode inode;
1342 int retval;
1343 ext2_ino_t dir;
1344 char *dest, *cp, *base_name;
1345
1346 /*
1347 * Get the source inode
1348 */
1349 ino = string_to_inode(sourcename);
1350 if (!ino)
1351 return;
1352 base_name = strrchr(sourcename, '/');
1353 if (base_name)
1354 base_name++;
1355 else
1356 base_name = sourcename;
1357 /*
1358 * Figure out the destination. First see if it exists and is
1359 * a directory.
1360 */
1361 if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1362 dest = base_name;
1363 else {
1364 /*
1365 * OK, it doesn't exist. See if it is
1366 * '<dir>/basename' or 'basename'
1367 */
1368 cp = strrchr(destname, '/');
1369 if (cp) {
1370 *cp = 0;
1371 dir = string_to_inode(destname);
1372 if (!dir)
1373 return;
1374 dest = cp+1;
1375 } else {
1376 dir = cwd;
1377 dest = destname;
1378 }
1379 }
1380
1381 if (debugfs_read_inode(ino, &inode, sourcename))
1382 return;
1383
1384 retval = ext2fs_link(current_fs, dir, dest, ino,
1385 ext2_file_type(inode.i_mode));
1386 if (retval)
1387 com_err("make_link", retval, 0);
1388 return;
1389 }
1390
1391
1392 void do_link(int argc, char *argv[])
1393 {
1394 if (common_args_process(argc, argv, 3, 3, "link",
1395 "<source file> <dest_name>", CHECK_FS_RW))
1396 return;
1397
1398 make_link(argv[1], argv[2]);
1399 }
1400
1401 static int mark_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1402 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1403 blk64_t ref_block EXT2FS_ATTR((unused)),
1404 int ref_offset EXT2FS_ATTR((unused)),
1405 void *private EXT2FS_ATTR((unused)))
1406 {
1407 blk64_t block;
1408
1409 block = *blocknr;
1410 ext2fs_block_alloc_stats2(fs, block, +1);
1411 return 0;
1412 }
1413
1414 void do_undel(int argc, char *argv[])
1415 {
1416 ext2_ino_t ino;
1417 struct ext2_inode inode;
1418
1419 if (common_args_process(argc, argv, 2, 3, "undelete",
1420 "<inode_num> [dest_name]",
1421 CHECK_FS_RW | CHECK_FS_BITMAPS))
1422 return;
1423
1424 ino = string_to_inode(argv[1]);
1425 if (!ino)
1426 return;
1427
1428 if (debugfs_read_inode(ino, &inode, argv[1]))
1429 return;
1430
1431 if (ext2fs_test_inode_bitmap2(current_fs->inode_map, ino)) {
1432 com_err(argv[1], 0, "Inode is not marked as deleted");
1433 return;
1434 }
1435
1436 /*
1437 * XXX this function doesn't handle changing the links count on the
1438 * parent directory when undeleting a directory.
1439 */
1440 inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1441 inode.i_dtime = 0;
1442
1443 if (debugfs_write_inode(ino, &inode, argv[0]))
1444 return;
1445
1446 ext2fs_block_iterate3(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL,
1447 mark_blocks_proc, NULL);
1448
1449 ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1450
1451 if (argc > 2)
1452 make_link(argv[1], argv[2]);
1453 }
1454
1455 static void unlink_file_by_name(char *filename)
1456 {
1457 int retval;
1458 ext2_ino_t dir;
1459 char *base_name;
1460
1461 base_name = strrchr(filename, '/');
1462 if (base_name) {
1463 *base_name++ = '\0';
1464 dir = string_to_inode(filename);
1465 if (!dir)
1466 return;
1467 } else {
1468 dir = cwd;
1469 base_name = filename;
1470 }
1471 retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
1472 if (retval)
1473 com_err("unlink_file_by_name", retval, 0);
1474 return;
1475 }
1476
1477 void do_unlink(int argc, char *argv[])
1478 {
1479 if (common_args_process(argc, argv, 2, 2, "link",
1480 "<pathname>", CHECK_FS_RW))
1481 return;
1482
1483 unlink_file_by_name(argv[1]);
1484 }
1485 #endif /* READ_ONLY */
1486
1487 void do_find_free_block(int argc, char *argv[])
1488 {
1489 blk64_t free_blk, goal, first_free = 0;
1490 int count;
1491 errcode_t retval;
1492 char *tmp;
1493
1494 if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1495 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1496 return;
1497 }
1498 if (check_fs_open(argv[0]))
1499 return;
1500
1501 if (argc > 1) {
1502 count = strtol(argv[1],&tmp,0);
1503 if (*tmp) {
1504 com_err(argv[0], 0, "Bad count - %s", argv[1]);
1505 return;
1506 }
1507 } else
1508 count = 1;
1509
1510 if (argc > 2) {
1511 goal = strtol(argv[2], &tmp, 0);
1512 if (*tmp) {
1513 com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1514 return;
1515 }
1516 }
1517 else
1518 goal = current_fs->super->s_first_data_block;
1519
1520 printf("Free blocks found: ");
1521 free_blk = goal - 1;
1522 while (count-- > 0) {
1523 retval = ext2fs_new_block2(current_fs, free_blk + 1, 0,
1524 &free_blk);
1525 if (first_free) {
1526 if (first_free == free_blk)
1527 break;
1528 } else
1529 first_free = free_blk;
1530 if (retval) {
1531 com_err("ext2fs_new_block", retval, 0);
1532 return;
1533 } else
1534 printf("%llu ", free_blk);
1535 }
1536 printf("\n");
1537 }
1538
1539 void do_find_free_inode(int argc, char *argv[])
1540 {
1541 ext2_ino_t free_inode, dir;
1542 int mode;
1543 int retval;
1544 char *tmp;
1545
1546 if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1547 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1548 return;
1549 }
1550 if (check_fs_open(argv[0]))
1551 return;
1552
1553 if (argc > 1) {
1554 dir = strtol(argv[1], &tmp, 0);
1555 if (*tmp) {
1556 com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1557 return;
1558 }
1559 }
1560 else
1561 dir = root;
1562 if (argc > 2) {
1563 mode = strtol(argv[2], &tmp, 0);
1564 if (*tmp) {
1565 com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1566 return;
1567 }
1568 } else
1569 mode = 010755;
1570
1571 retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1572 if (retval)
1573 com_err("ext2fs_new_inode", retval, 0);
1574 else
1575 printf("Free inode found: %u\n", free_inode);
1576 }
1577
1578 #ifndef READ_ONLY
1579 static errcode_t copy_file(int fd, ext2_ino_t newfile, int bufsize,
1580 int make_holes)
1581 {
1582 ext2_file_t e2_file;
1583 errcode_t retval, close_ret;
1584 int got;
1585 unsigned int written;
1586 char *buf;
1587 char *ptr;
1588 char *zero_buf;
1589 int cmp;
1590
1591 retval = ext2fs_file_open(current_fs, newfile,
1592 EXT2_FILE_WRITE, &e2_file);
1593 if (retval)
1594 return retval;
1595
1596 retval = ext2fs_get_mem(bufsize, &buf);
1597 if (retval) {
1598 com_err("copy_file", retval, "can't allocate buffer\n");
1599 goto out_close;
1600 }
1601
1602 /* This is used for checking whether the whole block is zero */
1603 retval = ext2fs_get_memzero(bufsize, &zero_buf);
1604 if (retval) {
1605 com_err("copy_file", retval, "can't allocate zero buffer\n");
1606 goto out_free_buf;
1607 }
1608
1609 while (1) {
1610 got = read(fd, buf, bufsize);
1611 if (got == 0)
1612 break;
1613 if (got < 0) {
1614 retval = errno;
1615 goto fail;
1616 }
1617 ptr = buf;
1618
1619 /* Sparse copy */
1620 if (make_holes) {
1621 /* Check whether all is zero */
1622 cmp = memcmp(ptr, zero_buf, got);
1623 if (cmp == 0) {
1624 /* The whole block is zero, make a hole */
1625 retval = ext2fs_file_lseek(e2_file, got,
1626 EXT2_SEEK_CUR, NULL);
1627 if (retval)
1628 goto fail;
1629 got = 0;
1630 }
1631 }
1632
1633 /* Normal copy */
1634 while (got > 0) {
1635 retval = ext2fs_file_write(e2_file, ptr,
1636 got, &written);
1637 if (retval)
1638 goto fail;
1639
1640 got -= written;
1641 ptr += written;
1642 }
1643 }
1644
1645 fail:
1646 ext2fs_free_mem(&zero_buf);
1647 out_free_buf:
1648 ext2fs_free_mem(&buf);
1649 out_close:
1650 close_ret = ext2fs_file_close(e2_file);
1651 if (retval == 0)
1652 retval = close_ret;
1653 return retval;
1654 }
1655
1656
1657 void do_write(int argc, char *argv[])
1658 {
1659 int fd;
1660 struct stat statbuf;
1661 ext2_ino_t newfile;
1662 errcode_t retval;
1663 struct ext2_inode inode;
1664 int bufsize = IO_BUFSIZE;
1665 int make_holes = 0;
1666
1667 if (common_args_process(argc, argv, 3, 3, "write",
1668 "<native file> <new file>", CHECK_FS_RW))
1669 return;
1670
1671 fd = open(argv[1], O_RDONLY);
1672 if (fd < 0) {
1673 com_err(argv[1], errno, 0);
1674 return;
1675 }
1676 if (fstat(fd, &statbuf) < 0) {
1677 com_err(argv[1], errno, 0);
1678 close(fd);
1679 return;
1680 }
1681
1682 retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1683 if (retval == 0) {
1684 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1685 close(fd);
1686 return;
1687 }
1688
1689 retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1690 if (retval) {
1691 com_err(argv[0], retval, 0);
1692 close(fd);
1693 return;
1694 }
1695 printf("Allocated inode: %u\n", newfile);
1696 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1697 EXT2_FT_REG_FILE);
1698 if (retval == EXT2_ET_DIR_NO_SPACE) {
1699 retval = ext2fs_expand_dir(current_fs, cwd);
1700 if (retval) {
1701 com_err(argv[0], retval, "while expanding directory");
1702 close(fd);
1703 return;
1704 }
1705 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1706 EXT2_FT_REG_FILE);
1707 }
1708 if (retval) {
1709 com_err(argv[2], retval, 0);
1710 close(fd);
1711 return;
1712 }
1713 if (ext2fs_test_inode_bitmap2(current_fs->inode_map,newfile))
1714 com_err(argv[0], 0, "Warning: inode already set");
1715 ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1716 memset(&inode, 0, sizeof(inode));
1717 inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
1718 inode.i_atime = inode.i_ctime = inode.i_mtime =
1719 current_fs->now ? current_fs->now : time(0);
1720 inode.i_links_count = 1;
1721 retval = ext2fs_inode_size_set(current_fs, &inode, statbuf.st_size);
1722 if (retval) {
1723 com_err(argv[2], retval, 0);
1724 close(fd);
1725 return;
1726 }
1727 if (current_fs->super->s_feature_incompat &
1728 EXT3_FEATURE_INCOMPAT_EXTENTS) {
1729 int i;
1730 struct ext3_extent_header *eh;
1731
1732 eh = (struct ext3_extent_header *) &inode.i_block[0];
1733 eh->eh_depth = 0;
1734 eh->eh_entries = 0;
1735 eh->eh_magic = ext2fs_cpu_to_le16(EXT3_EXT_MAGIC);
1736 i = (sizeof(inode.i_block) - sizeof(*eh)) /
1737 sizeof(struct ext3_extent);
1738 eh->eh_max = ext2fs_cpu_to_le16(i);
1739 inode.i_flags |= EXT4_EXTENTS_FL;
1740 }
1741 if (debugfs_write_new_inode(newfile, &inode, argv[0])) {
1742 close(fd);
1743 return;
1744 }
1745 if (LINUX_S_ISREG(inode.i_mode)) {
1746 if (statbuf.st_blocks < statbuf.st_size / S_BLKSIZE) {
1747 make_holes = 1;
1748 /*
1749 * Use I/O blocksize as buffer size when
1750 * copying sparse files.
1751 */
1752 bufsize = statbuf.st_blksize;
1753 }
1754 retval = copy_file(fd, newfile, bufsize, make_holes);
1755 if (retval)
1756 com_err("copy_file", retval, 0);
1757 }
1758 close(fd);
1759 }
1760
1761 void do_mknod(int argc, char *argv[])
1762 {
1763 unsigned long mode, major, minor;
1764 ext2_ino_t newfile;
1765 errcode_t retval;
1766 struct ext2_inode inode;
1767 int filetype, nr;
1768
1769 if (check_fs_open(argv[0]))
1770 return;
1771 if (argc < 3 || argv[2][1]) {
1772 usage:
1773 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1774 return;
1775 }
1776 mode = minor = major = 0;
1777 switch (argv[2][0]) {
1778 case 'p':
1779 mode = LINUX_S_IFIFO;
1780 filetype = EXT2_FT_FIFO;
1781 nr = 3;
1782 break;
1783 case 'c':
1784 mode = LINUX_S_IFCHR;
1785 filetype = EXT2_FT_CHRDEV;
1786 nr = 5;
1787 break;
1788 case 'b':
1789 mode = LINUX_S_IFBLK;
1790 filetype = EXT2_FT_BLKDEV;
1791 nr = 5;
1792 break;
1793 default:
1794 filetype = 0;
1795 nr = 0;
1796 }
1797 if (nr == 5) {
1798 major = strtoul(argv[3], argv+3, 0);
1799 minor = strtoul(argv[4], argv+4, 0);
1800 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1801 nr = 0;
1802 }
1803 if (argc != nr)
1804 goto usage;
1805 if (check_fs_read_write(argv[0]))
1806 return;
1807 retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1808 if (retval) {
1809 com_err(argv[0], retval, 0);
1810 return;
1811 }
1812 printf("Allocated inode: %u\n", newfile);
1813 retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1814 if (retval == EXT2_ET_DIR_NO_SPACE) {
1815 retval = ext2fs_expand_dir(current_fs, cwd);
1816 if (retval) {
1817 com_err(argv[0], retval, "while expanding directory");
1818 return;
1819 }
1820 retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
1821 filetype);
1822 }
1823 if (retval) {
1824 com_err(argv[1], retval, 0);
1825 return;
1826 }
1827 if (ext2fs_test_inode_bitmap2(current_fs->inode_map,newfile))
1828 com_err(argv[0], 0, "Warning: inode already set");
1829 ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1830 memset(&inode, 0, sizeof(inode));
1831 inode.i_mode = mode;
1832 inode.i_atime = inode.i_ctime = inode.i_mtime =
1833 current_fs->now ? current_fs->now : time(0);
1834 if ((major < 256) && (minor < 256)) {
1835 inode.i_block[0] = major*256+minor;
1836 inode.i_block[1] = 0;
1837 } else {
1838 inode.i_block[0] = 0;
1839 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
1840 }
1841 inode.i_links_count = 1;
1842 if (debugfs_write_new_inode(newfile, &inode, argv[0]))
1843 return;
1844 }
1845
1846 void do_mkdir(int argc, char *argv[])
1847 {
1848 char *cp;
1849 ext2_ino_t parent;
1850 char *name;
1851 errcode_t retval;
1852
1853 if (common_args_process(argc, argv, 2, 2, "mkdir",
1854 "<filename>", CHECK_FS_RW))
1855 return;
1856
1857 cp = strrchr(argv[1], '/');
1858 if (cp) {
1859 *cp = 0;
1860 parent = string_to_inode(argv[1]);
1861 if (!parent) {
1862 com_err(argv[1], ENOENT, 0);
1863 return;
1864 }
1865 name = cp+1;
1866 } else {
1867 parent = cwd;
1868 name = argv[1];
1869 }
1870
1871 try_again:
1872 retval = ext2fs_mkdir(current_fs, parent, 0, name);
1873 if (retval == EXT2_ET_DIR_NO_SPACE) {
1874 retval = ext2fs_expand_dir(current_fs, parent);
1875 if (retval) {
1876 com_err(argv[0], retval, "while expanding directory");
1877 return;
1878 }
1879 goto try_again;
1880 }
1881 if (retval) {
1882 com_err("ext2fs_mkdir", retval, 0);
1883 return;
1884 }
1885
1886 }
1887
1888 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1889 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1890 blk64_t ref_block EXT2FS_ATTR((unused)),
1891 int ref_offset EXT2FS_ATTR((unused)),
1892 void *private EXT2FS_ATTR((unused)))
1893 {
1894 blk64_t block;
1895
1896 block = *blocknr;
1897 ext2fs_block_alloc_stats2(fs, block, -1);
1898 return 0;
1899 }
1900
1901 static void kill_file_by_inode(ext2_ino_t inode)
1902 {
1903 struct ext2_inode inode_buf;
1904
1905 if (debugfs_read_inode(inode, &inode_buf, 0))
1906 return;
1907 inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1908 if (debugfs_write_inode(inode, &inode_buf, 0))
1909 return;
1910 if (!ext2fs_inode_has_valid_blocks2(current_fs, &inode_buf))
1911 return;
1912
1913 ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
1914 release_blocks_proc, NULL);
1915 printf("\n");
1916 ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1917 LINUX_S_ISDIR(inode_buf.i_mode));
1918 }
1919
1920
1921 void do_kill_file(int argc, char *argv[])
1922 {
1923 ext2_ino_t inode_num;
1924
1925 if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1926 return;
1927
1928 kill_file_by_inode(inode_num);
1929 }
1930
1931 void do_rm(int argc, char *argv[])
1932 {
1933 int retval;
1934 ext2_ino_t inode_num;
1935 struct ext2_inode inode;
1936
1937 if (common_args_process(argc, argv, 2, 2, "rm",
1938 "<filename>", CHECK_FS_RW))
1939 return;
1940
1941 retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1942 if (retval) {
1943 com_err(argv[0], retval, "while trying to resolve filename");
1944 return;
1945 }
1946
1947 if (debugfs_read_inode(inode_num, &inode, argv[0]))
1948 return;
1949
1950 if (LINUX_S_ISDIR(inode.i_mode)) {
1951 com_err(argv[0], 0, "file is a directory");
1952 return;
1953 }
1954
1955 --inode.i_links_count;
1956 if (debugfs_write_inode(inode_num, &inode, argv[0]))
1957 return;
1958
1959 unlink_file_by_name(argv[1]);
1960 if (inode.i_links_count == 0)
1961 kill_file_by_inode(inode_num);
1962 }
1963
1964 struct rd_struct {
1965 ext2_ino_t parent;
1966 int empty;
1967 };
1968
1969 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1970 int entry EXT2FS_ATTR((unused)),
1971 struct ext2_dir_entry *dirent,
1972 int offset EXT2FS_ATTR((unused)),
1973 int blocksize EXT2FS_ATTR((unused)),
1974 char *buf EXT2FS_ATTR((unused)),
1975 void *private)
1976 {
1977 struct rd_struct *rds = (struct rd_struct *) private;
1978
1979 if (dirent->inode == 0)
1980 return 0;
1981 if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1982 return 0;
1983 if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1984 (dirent->name[1] == '.')) {
1985 rds->parent = dirent->inode;
1986 return 0;
1987 }
1988 rds->empty = 0;
1989 return 0;
1990 }
1991
1992 void do_rmdir(int argc, char *argv[])
1993 {
1994 int retval;
1995 ext2_ino_t inode_num;
1996 struct ext2_inode inode;
1997 struct rd_struct rds;
1998
1999 if (common_args_process(argc, argv, 2, 2, "rmdir",
2000 "<filename>", CHECK_FS_RW))
2001 return;
2002
2003 retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
2004 if (retval) {
2005 com_err(argv[0], retval, "while trying to resolve filename");
2006 return;
2007 }
2008
2009 if (debugfs_read_inode(inode_num, &inode, argv[0]))
2010 return;
2011
2012 if (!LINUX_S_ISDIR(inode.i_mode)) {
2013 com_err(argv[0], 0, "file is not a directory");
2014 return;
2015 }
2016
2017 rds.parent = 0;
2018 rds.empty = 1;
2019
2020 retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
2021 0, rmdir_proc, &rds);
2022 if (retval) {
2023 com_err(argv[0], retval, "while iterating over directory");
2024 return;
2025 }
2026 if (rds.empty == 0) {
2027 com_err(argv[0], 0, "directory not empty");
2028 return;
2029 }
2030
2031 inode.i_links_count = 0;
2032 if (debugfs_write_inode(inode_num, &inode, argv[0]))
2033 return;
2034
2035 unlink_file_by_name(argv[1]);
2036 kill_file_by_inode(inode_num);
2037
2038 if (rds.parent) {
2039 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
2040 return;
2041 if (inode.i_links_count > 1)
2042 inode.i_links_count--;
2043 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
2044 return;
2045 }
2046 }
2047 #endif /* READ_ONLY */
2048
2049 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
2050 char *argv[] EXT2FS_ATTR((unused)))
2051 {
2052 if (current_fs)
2053 printf("Open mode: read-%s\n",
2054 current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
2055 printf("Filesystem in use: %s\n",
2056 current_fs ? current_fs->device_name : "--none--");
2057 }
2058
2059 #ifndef READ_ONLY
2060 void do_expand_dir(int argc, char *argv[])
2061 {
2062 ext2_ino_t inode;
2063 int retval;
2064
2065 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
2066 return;
2067
2068 retval = ext2fs_expand_dir(current_fs, inode);
2069 if (retval)
2070 com_err("ext2fs_expand_dir", retval, 0);
2071 return;
2072 }
2073
2074 void do_features(int argc, char *argv[])
2075 {
2076 int i;
2077
2078 if (check_fs_open(argv[0]))
2079 return;
2080
2081 if ((argc != 1) && check_fs_read_write(argv[0]))
2082 return;
2083 for (i=1; i < argc; i++) {
2084 if (e2p_edit_feature(argv[i],
2085 &current_fs->super->s_feature_compat, 0))
2086 com_err(argv[0], 0, "Unknown feature: %s\n",
2087 argv[i]);
2088 else
2089 ext2fs_mark_super_dirty(current_fs);
2090 }
2091 print_features(current_fs->super, stdout);
2092 }
2093 #endif /* READ_ONLY */
2094
2095 void do_bmap(int argc, char *argv[])
2096 {
2097 ext2_ino_t ino;
2098 blk64_t blk, pblk;
2099 int err;
2100 errcode_t errcode;
2101
2102 if (common_args_process(argc, argv, 3, 3, argv[0],
2103 "<file> logical_blk", 0))
2104 return;
2105
2106 ino = string_to_inode(argv[1]);
2107 if (!ino)
2108 return;
2109 err = strtoblk(argv[0], argv[2], "logical block", &blk);
2110 if (err)
2111 return;
2112
2113 errcode = ext2fs_bmap2(current_fs, ino, 0, 0, 0, blk, 0, &pblk);
2114 if (errcode) {
2115 com_err(argv[0], errcode,
2116 "while mapping logical block %llu\n", blk);
2117 return;
2118 }
2119 printf("%llu\n", pblk);
2120 }
2121
2122 void do_imap(int argc, char *argv[])
2123 {
2124 ext2_ino_t ino;
2125 unsigned long group, block, block_nr, offset;
2126
2127 if (common_args_process(argc, argv, 2, 2, argv[0],
2128 "<file>", 0))
2129 return;
2130 ino = string_to_inode(argv[1]);
2131 if (!ino)
2132 return;
2133
2134 group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
2135 offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
2136 EXT2_INODE_SIZE(current_fs->super);
2137 block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
2138 if (!ext2fs_inode_table_loc(current_fs, (unsigned)group)) {
2139 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
2140 group);
2141 return;
2142 }
2143 block_nr = ext2fs_inode_table_loc(current_fs, (unsigned)group) +
2144 block;
2145 offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
2146
2147 printf("Inode %d is part of block group %lu\n"
2148 "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
2149 block_nr, offset);
2150
2151 }
2152
2153 void do_idump(int argc, char *argv[])
2154 {
2155 ext2_ino_t ino;
2156 unsigned char *buf;
2157 errcode_t err;
2158 int isize;
2159
2160 if (common_args_process(argc, argv, 2, 2, argv[0],
2161 "<file>", 0))
2162 return;
2163 ino = string_to_inode(argv[1]);
2164 if (!ino)
2165 return;
2166
2167 isize = EXT2_INODE_SIZE(current_fs->super);
2168 err = ext2fs_get_mem(isize, &buf);
2169 if (err) {
2170 com_err(argv[0], err, "while allocating memory");
2171 return;
2172 }
2173
2174 err = ext2fs_read_inode_full(current_fs, ino,
2175 (struct ext2_inode *)buf, isize);
2176 if (err) {
2177 com_err(argv[0], err, "while reading inode %d", ino);
2178 goto err;
2179 }
2180
2181 do_byte_hexdump(stdout, buf, isize);
2182 err:
2183 ext2fs_free_mem(&buf);
2184 }
2185
2186 #ifndef READ_ONLY
2187 void do_set_current_time(int argc, char *argv[])
2188 {
2189 time_t now;
2190
2191 if (common_args_process(argc, argv, 2, 2, argv[0],
2192 "<time>", 0))
2193 return;
2194
2195 now = string_to_time(argv[1]);
2196 if (now == ((time_t) -1)) {
2197 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
2198 argv[1]);
2199 return;
2200
2201 } else {
2202 printf("Setting current time to %s\n", time_to_string(now));
2203 current_fs->now = now;
2204 }
2205 }
2206 #endif /* READ_ONLY */
2207
2208 static int find_supp_feature(__u32 *supp, int feature_type, char *name)
2209 {
2210 int compat, bit, ret;
2211 unsigned int feature_mask;
2212
2213 if (name) {
2214 if (feature_type == E2P_FS_FEATURE)
2215 ret = e2p_string2feature(name, &compat, &feature_mask);
2216 else
2217 ret = e2p_jrnl_string2feature(name, &compat,
2218 &feature_mask);
2219 if (ret)
2220 return ret;
2221
2222 if (!(supp[compat] & feature_mask))
2223 return 1;
2224 } else {
2225 for (compat = 0; compat < 3; compat++) {
2226 for (bit = 0, feature_mask = 1; bit < 32;
2227 bit++, feature_mask <<= 1) {
2228 if (supp[compat] & feature_mask) {
2229 if (feature_type == E2P_FS_FEATURE)
2230 fprintf(stdout, " %s",
2231 e2p_feature2string(compat,
2232 feature_mask));
2233 else
2234 fprintf(stdout, " %s",
2235 e2p_jrnl_feature2string(compat,
2236 feature_mask));
2237 }
2238 }
2239 }
2240 fprintf(stdout, "\n");
2241 }
2242
2243 return 0;
2244 }
2245
2246 void do_supported_features(int argc, char *argv[])
2247 {
2248 int ret;
2249 __u32 supp[3] = { EXT2_LIB_FEATURE_COMPAT_SUPP,
2250 EXT2_LIB_FEATURE_INCOMPAT_SUPP,
2251 EXT2_LIB_FEATURE_RO_COMPAT_SUPP };
2252 __u32 jrnl_supp[3] = { JFS_KNOWN_COMPAT_FEATURES,
2253 JFS_KNOWN_INCOMPAT_FEATURES,
2254 JFS_KNOWN_ROCOMPAT_FEATURES };
2255
2256 if (argc > 1) {
2257 ret = find_supp_feature(supp, E2P_FS_FEATURE, argv[1]);
2258 if (ret) {
2259 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE,
2260 argv[1]);
2261 }
2262 if (ret)
2263 com_err(argv[0], 0, "Unknown feature: %s\n", argv[1]);
2264 else
2265 fprintf(stdout, "Supported feature: %s\n", argv[1]);
2266 } else {
2267 fprintf(stdout, "Supported features:");
2268 ret = find_supp_feature(supp, E2P_FS_FEATURE, NULL);
2269 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE, NULL);
2270 }
2271 }
2272
2273 #ifndef READ_ONLY
2274 void do_punch(int argc, char *argv[])
2275 {
2276 ext2_ino_t ino;
2277 blk64_t start, end;
2278 int err;
2279 errcode_t errcode;
2280
2281 if (common_args_process(argc, argv, 3, 4, argv[0],
2282 "<file> start_blk [end_blk]",
2283 CHECK_FS_RW | CHECK_FS_BITMAPS))
2284 return;
2285
2286 ino = string_to_inode(argv[1]);
2287 if (!ino)
2288 return;
2289 err = strtoblk(argv[0], argv[2], "logical block", &start);
2290 if (err)
2291 return;
2292 if (argc == 4) {
2293 err = strtoblk(argv[0], argv[3], "logical block", &end);
2294 if (err)
2295 return;
2296 } else
2297 end = ~0;
2298
2299 errcode = ext2fs_punch(current_fs, ino, 0, 0, start, end);
2300
2301 if (errcode) {
2302 com_err(argv[0], errcode,
2303 "while truncating inode %u from %llu to %llu\n", ino,
2304 (unsigned long long) start, (unsigned long long) end);
2305 return;
2306 }
2307 }
2308 #endif /* READ_ONLY */
2309
2310 void do_symlink(int argc, char *argv[])
2311 {
2312 char *cp;
2313 ext2_ino_t parent;
2314 char *name, *target;
2315 errcode_t retval;
2316
2317 if (common_args_process(argc, argv, 3, 3, "symlink",
2318 "<filename> <target>", CHECK_FS_RW))
2319 return;
2320
2321 cp = strrchr(argv[1], '/');
2322 if (cp) {
2323 *cp = 0;
2324 parent = string_to_inode(argv[1]);
2325 if (!parent) {
2326 com_err(argv[1], ENOENT, 0);
2327 return;
2328 }
2329 name = cp+1;
2330 } else {
2331 parent = cwd;
2332 name = argv[1];
2333 }
2334 target = argv[2];
2335
2336 try_again:
2337 retval = ext2fs_symlink(current_fs, parent, 0, name, target);
2338 if (retval == EXT2_ET_DIR_NO_SPACE) {
2339 retval = ext2fs_expand_dir(current_fs, parent);
2340 if (retval) {
2341 com_err(argv[0], retval, "while expanding directory");
2342 return;
2343 }
2344 goto try_again;
2345 }
2346 if (retval) {
2347 com_err("ext2fs_symlink", retval, 0);
2348 return;
2349 }
2350
2351 }
2352
2353 void do_dump_mmp(int argc EXT2FS_ATTR((unused)), char *argv[])
2354 {
2355 struct mmp_struct *mmp_s;
2356 time_t t;
2357 errcode_t retval = 0;
2358
2359 if (check_fs_open(argv[0]))
2360 return;
2361
2362 if (current_fs->mmp_buf == NULL) {
2363 retval = ext2fs_get_mem(current_fs->blocksize,
2364 &current_fs->mmp_buf);
2365 if (retval) {
2366 com_err(argv[0], retval, "allocating MMP buffer.\n");
2367 return;
2368 }
2369 }
2370
2371 mmp_s = current_fs->mmp_buf;
2372
2373 retval = ext2fs_mmp_read(current_fs, current_fs->super->s_mmp_block,
2374 current_fs->mmp_buf);
2375 if (retval) {
2376 com_err(argv[0], retval, "reading MMP block.\n");
2377 return;
2378 }
2379
2380 t = mmp_s->mmp_time;
2381 fprintf(stdout, "block_number: %llu\n", current_fs->super->s_mmp_block);
2382 fprintf(stdout, "update_interval: %d\n",
2383 current_fs->super->s_mmp_update_interval);
2384 fprintf(stdout, "check_interval: %d\n", mmp_s->mmp_check_interval);
2385 fprintf(stdout, "sequence: %08x\n", mmp_s->mmp_seq);
2386 fprintf(stdout, "time: %lld -- %s", mmp_s->mmp_time, ctime(&t));
2387 fprintf(stdout, "node_name: %s\n", mmp_s->mmp_nodename);
2388 fprintf(stdout, "device_name: %s\n", mmp_s->mmp_bdevname);
2389 fprintf(stdout, "magic: 0x%x\n", mmp_s->mmp_magic);
2390 }
2391
2392 static int source_file(const char *cmd_file, int ss_idx)
2393 {
2394 FILE *f;
2395 char buf[BUFSIZ];
2396 char *cp;
2397 int exit_status = 0;
2398 int retval;
2399
2400 if (strcmp(cmd_file, "-") == 0)
2401 f = stdin;
2402 else {
2403 f = fopen(cmd_file, "r");
2404 if (!f) {
2405 perror(cmd_file);
2406 exit(1);
2407 }
2408 }
2409 fflush(stdout);
2410 fflush(stderr);
2411 setbuf(stdout, NULL);
2412 setbuf(stderr, NULL);
2413 while (!feof(f)) {
2414 if (fgets(buf, sizeof(buf), f) == NULL)
2415 break;
2416 cp = strchr(buf, '\n');
2417 if (cp)
2418 *cp = 0;
2419 cp = strchr(buf, '\r');
2420 if (cp)
2421 *cp = 0;
2422 printf("debugfs: %s\n", buf);
2423 retval = ss_execute_line(ss_idx, buf);
2424 if (retval) {
2425 ss_perror(ss_idx, retval, buf);
2426 exit_status++;
2427 }
2428 }
2429 if (f != stdin)
2430 fclose(f);
2431 return exit_status;
2432 }
2433
2434 int main(int argc, char **argv)
2435 {
2436 int retval;
2437 const char *usage =
2438 "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] "
2439 "[-R request] [-V] ["
2440 #ifndef READ_ONLY
2441 "[-w] "
2442 #endif
2443 "[-c] device]";
2444 int c;
2445 int open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
2446 char *request = 0;
2447 int exit_status = 0;
2448 char *cmd_file = 0;
2449 blk64_t superblock = 0;
2450 blk64_t blocksize = 0;
2451 int catastrophic = 0;
2452 char *data_filename = 0;
2453 #ifdef READ_ONLY
2454 const char *opt_string = "icR:f:b:s:Vd:D";
2455 #else
2456 const char *opt_string = "iwcR:f:b:s:Vd:D";
2457 #endif
2458
2459 if (debug_prog_name == 0)
2460 #ifdef READ_ONLY
2461 debug_prog_name = "rdebugfs";
2462 #else
2463 debug_prog_name = "debugfs";
2464 #endif
2465 add_error_table(&et_ext2_error_table);
2466 fprintf (stderr, "%s %s (%s)\n", debug_prog_name,
2467 E2FSPROGS_VERSION, E2FSPROGS_DATE);
2468
2469 while ((c = getopt (argc, argv, opt_string)) != EOF) {
2470 switch (c) {
2471 case 'R':
2472 request = optarg;
2473 break;
2474 case 'f':
2475 cmd_file = optarg;
2476 break;
2477 case 'd':
2478 data_filename = optarg;
2479 break;
2480 case 'i':
2481 open_flags |= EXT2_FLAG_IMAGE_FILE;
2482 break;
2483 #ifndef READ_ONLY
2484 case 'w':
2485 open_flags |= EXT2_FLAG_RW;
2486 break;
2487 #endif
2488 case 'D':
2489 open_flags |= EXT2_FLAG_DIRECT_IO;
2490 break;
2491 case 'b':
2492 blocksize = parse_ulong(optarg, argv[0],
2493 "block size", 0);
2494 break;
2495 case 's':
2496 retval = strtoblk(argv[0], optarg,
2497 "superblock block number",
2498 &superblock);
2499 if (retval)
2500 return 1;
2501 break;
2502 case 'c':
2503 catastrophic = 1;
2504 break;
2505 case 'V':
2506 /* Print version number and exit */
2507 fprintf(stderr, "\tUsing %s\n",
2508 error_message(EXT2_ET_BASE));
2509 exit(0);
2510 default:
2511 com_err(argv[0], 0, usage, debug_prog_name);
2512 return 1;
2513 }
2514 }
2515 if (optind < argc)
2516 open_filesystem(argv[optind], open_flags,
2517 superblock, blocksize, catastrophic,
2518 data_filename);
2519
2520 sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL,
2521 &debug_cmds, &retval);
2522 if (retval) {
2523 ss_perror(sci_idx, retval, "creating invocation");
2524 exit(1);
2525 }
2526 ss_get_readline(sci_idx);
2527
2528 (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
2529 if (retval) {
2530 ss_perror(sci_idx, retval, "adding standard requests");
2531 exit (1);
2532 }
2533 if (extra_cmds)
2534 ss_add_request_table (sci_idx, extra_cmds, 1, &retval);
2535 if (retval) {
2536 ss_perror(sci_idx, retval, "adding extra requests");
2537 exit (1);
2538 }
2539 if (request) {
2540 retval = 0;
2541 retval = ss_execute_line(sci_idx, request);
2542 if (retval) {
2543 ss_perror(sci_idx, retval, request);
2544 exit_status++;
2545 }
2546 } else if (cmd_file) {
2547 exit_status = source_file(cmd_file, sci_idx);
2548 } else {
2549 ss_listen(sci_idx);
2550 }
2551
2552 ss_delete_invocation(sci_idx);
2553
2554 if (current_fs)
2555 close_filesystem();
2556
2557 remove_error_table(&et_ext2_error_table);
2558 return exit_status;
2559 }
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