]> git.ipfire.org Git - thirdparty/e2fsprogs.git/blob - debugfs/debugfs.c
projects / thirdparty / e2fsprogs.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Integrate ext2ed into the e2fsprogs build system, and make minimal changes so
[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 <stdio.h>
12 #include <unistd.h>
13 #include <stdlib.h>
14 #include <ctype.h>
15 #include <string.h>
16 #include <time.h>
17 #ifdef HAVE_GETOPT_H
18 #include <getopt.h>
19 #else
20 extern int optind;
21 extern char *optarg;
22 #endif
23 #ifdef HAVE_OPTRESET
24 extern int optreset; /* defined by BSD, but not others */
25 #endif
26 #ifdef HAVE_ERRNO_H
27 #include <errno.h>
28 #endif
29 #include <fcntl.h>
30 #include <sys/types.h>
31 #include <sys/stat.h>
32
33 #include "et/com_err.h"
34 #include "ss/ss.h"
35 #include "debugfs.h"
36 #include "uuid/uuid.h"
37 #include "e2p/e2p.h"
38
39 #include "../version.h"
40
41 extern ss_request_table debug_cmds;
42
43 ext2_filsys current_fs = NULL;
44 ext2_ino_t root, cwd;
45
46 static void open_filesystem(char *device, int open_flags, blk_t superblock,
47 blk_t blocksize, int catastrophic)
48 {
49 int retval;
50
51 if (superblock != 0 && blocksize == 0) {
52 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
53 current_fs = NULL;
54 return;
55 }
56
57 if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
58 com_err(device, 0,
59 "opening read-only because of catastrophic mode");
60 open_flags &= ~EXT2_FLAG_RW;
61 }
62
63 retval = ext2fs_open(device, open_flags, superblock, blocksize,
64 unix_io_manager, &current_fs);
65 if (retval) {
66 com_err(device, retval, "while opening filesystem");
67 current_fs = NULL;
68 return;
69 }
70
71 if (catastrophic)
72 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
73 else {
74 retval = ext2fs_read_inode_bitmap(current_fs);
75 if (retval) {
76 com_err(device, retval, "while reading inode bitmap");
77 goto errout;
78 }
79 retval = ext2fs_read_block_bitmap(current_fs);
80 if (retval) {
81 com_err(device, retval, "while reading block bitmap");
82 goto errout;
83 }
84 }
85 root = cwd = EXT2_ROOT_INO;
86 return;
87
88 errout:
89 retval = ext2fs_close(current_fs);
90 if (retval)
91 com_err(device, retval, "while trying to close filesystem");
92 current_fs = NULL;
93 }
94
95 void do_open_filesys(int argc, char **argv)
96 {
97 const char *usage = "Usage: open [-s superblock] [-b blocksize] [-c] [-w] <device>";
98 int c, err;
99 int catastrophic = 0;
100 blk_t superblock = 0;
101 blk_t blocksize = 0;
102 int open_flags = 0;
103
104 optind = 0;
105 #ifdef HAVE_OPTRESET
106 optreset = 1; /* Makes BSD getopt happy */
107 #endif
108 while ((c = getopt (argc, argv, "iwfcb:s:")) != EOF) {
109 switch (c) {
110 case 'i':
111 open_flags |= EXT2_FLAG_IMAGE_FILE;
112 break;
113 case 'w':
114 open_flags |= EXT2_FLAG_RW;
115 break;
116 case 'f':
117 open_flags |= EXT2_FLAG_FORCE;
118 break;
119 case 'c':
120 catastrophic = 1;
121 break;
122 case 'b':
123 blocksize = parse_ulong(optarg, argv[0],
124 "block size", &err);
125 if (err)
126 return;
127 break;
128 case 's':
129 superblock = parse_ulong(optarg, argv[0],
130 "superblock number", &err);
131 if (err)
132 return;
133 break;
134 default:
135 com_err(argv[0], 0, usage);
136 return;
137 }
138 }
139 if (optind != argc-1) {
140 com_err(argv[0], 0, usage);
141 return;
142 }
143 if (check_fs_not_open(argv[0]))
144 return;
145 open_filesystem(argv[optind], open_flags,
146 superblock, blocksize, catastrophic);
147 }
148
149 void do_lcd(int argc, char **argv)
150 {
151 if (common_args_process(argc, argv, 2, 2, "lcd",
152 "<native dir>", 0))
153 return;
154
155 if (chdir(argv[1]) == -1) {
156 com_err(argv[0], errno,
157 "while trying to change native directory to %s",
158 argv[1]);
159 return;
160 }
161 }
162
163 static void close_filesystem(NOARGS)
164 {
165 int retval;
166
167 if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
168 retval = ext2fs_write_inode_bitmap(current_fs);
169 if (retval)
170 com_err("ext2fs_write_inode_bitmap", retval, "");
171 }
172 if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
173 retval = ext2fs_write_block_bitmap(current_fs);
174 if (retval)
175 com_err("ext2fs_write_block_bitmap", retval, "");
176 }
177 retval = ext2fs_close(current_fs);
178 if (retval)
179 com_err("ext2fs_close", retval, "");
180 current_fs = NULL;
181 return;
182 }
183
184 void do_close_filesys(int argc, char **argv)
185 {
186 if (common_args_process(argc, argv, 1, 1, "close_filesys", "", 0))
187 return;
188 close_filesystem();
189 }
190
191 void do_init_filesys(int argc, char **argv)
192 {
193 struct ext2_super_block param;
194 errcode_t retval;
195 int err;
196
197 if (common_args_process(argc, argv, 3, 3, "initialize",
198 "<device> <blocksize>", CHECK_FS_NOTOPEN))
199 return;
200
201 memset(&param, 0, sizeof(struct ext2_super_block));
202 param.s_blocks_count = parse_ulong(argv[0], argv[2],
203 "blocks count", &err);
204 if (err)
205 return;
206 retval = ext2fs_initialize(argv[1], 0, &param,
207 unix_io_manager, &current_fs);
208 if (retval) {
209 com_err(argv[1], retval, "while initializing filesystem");
210 current_fs = NULL;
211 return;
212 }
213 root = cwd = EXT2_ROOT_INO;
214 return;
215 }
216
217 static void print_features(struct ext2_super_block * s, FILE *f)
218 {
219 int i, j, printed=0;
220 __u32 *mask = &s->s_feature_compat, m;
221
222 fputs("Filesystem features:", f);
223 for (i=0; i <3; i++,mask++) {
224 for (j=0,m=1; j < 32; j++, m<<=1) {
225 if (*mask & m) {
226 fprintf(f, " %s", e2p_feature2string(i, m));
227 printed++;
228 }
229 }
230 }
231 if (printed == 0)
232 fputs("(none)", f);
233 fputs("\n", f);
234 }
235
236 void do_show_super_stats(int argc, char *argv[])
237 {
238 int i;
239 FILE *out;
240 struct ext2_group_desc *gdp;
241 int c, header_only = 0;
242 const char *usage = "Usage: show_super [-h]";
243
244 optind = 0;
245 #ifdef HAVE_OPTRESET
246 optreset = 1; /* Makes BSD getopt happy */
247 #endif
248 while ((c = getopt (argc, argv, "h")) != EOF) {
249 switch (c) {
250 case 'h':
251 header_only++;
252 break;
253 default:
254 com_err(argv[0], 0, usage);
255 return;
256 }
257 }
258 if (optind != argc) {
259 com_err(argv[0], 0, usage);
260 return;
261 }
262 if (check_fs_open(argv[0]))
263 return;
264 out = open_pager();
265
266 list_super2(current_fs->super, out);
267
268 if (header_only) {
269 close_pager(out);
270 return;
271 }
272
273 gdp = &current_fs->group_desc[0];
274 for (i = 0; i < current_fs->group_desc_count; i++, gdp++)
275 fprintf(out, " Group %2d: block bitmap at %d, "
276 "inode bitmap at %d, "
277 "inode table at %d\n"
278 " %d free %s, "
279 "%d free %s, "
280 "%d used %s\n",
281 i, gdp->bg_block_bitmap,
282 gdp->bg_inode_bitmap, gdp->bg_inode_table,
283 gdp->bg_free_blocks_count,
284 gdp->bg_free_blocks_count != 1 ? "blocks" : "block",
285 gdp->bg_free_inodes_count,
286 gdp->bg_free_inodes_count != 1 ? "inodes" : "inode",
287 gdp->bg_used_dirs_count,
288 gdp->bg_used_dirs_count != 1 ? "directories"
289 : "directory");
290 close_pager(out);
291 }
292
293 void do_dirty_filesys(int argc, char **argv)
294 {
295 if (check_fs_open(argv[0]))
296 return;
297 if (check_fs_read_write(argv[0]))
298 return;
299
300 if (argv[1] && !strcmp(argv[1], "-clean"))
301 current_fs->super->s_state |= EXT2_VALID_FS;
302 else
303 current_fs->super->s_state &= ~EXT2_VALID_FS;
304 ext2fs_mark_super_dirty(current_fs);
305 }
306
307 struct list_blocks_struct {
308 FILE *f;
309 e2_blkcnt_t total;
310 blk_t first_block, last_block;
311 e2_blkcnt_t first_bcnt, last_bcnt;
312 e2_blkcnt_t first;
313 };
314
315 static void finish_range(struct list_blocks_struct *lb)
316 {
317 if (lb->first_block == 0)
318 return;
319 if (lb->first)
320 lb->first = 0;
321 else
322 fprintf(lb->f, ", ");
323 if (lb->first_block == lb->last_block)
324 fprintf(lb->f, "(%lld):%d", lb->first_bcnt, lb->first_block);
325 else
326 fprintf(lb->f, "(%lld-%lld):%d-%d", lb->first_bcnt,
327 lb->last_bcnt, lb->first_block, lb->last_block);
328 lb->first_block = 0;
329 }
330
331 static int list_blocks_proc(ext2_filsys fs, blk_t *blocknr,
332 e2_blkcnt_t blockcnt, blk_t ref_block,
333 int ref_offset, void *private)
334 {
335 struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
336
337 lb->total++;
338 if (blockcnt >= 0) {
339 /*
340 * See if we can add on to the existing range (if it exists)
341 */
342 if (lb->first_block &&
343 (lb->last_block+1 == *blocknr) &&
344 (lb->last_bcnt+1 == blockcnt)) {
345 lb->last_block = *blocknr;
346 lb->last_bcnt = blockcnt;
347 return 0;
348 }
349 /*
350 * Start a new range.
351 */
352 finish_range(lb);
353 lb->first_block = lb->last_block = *blocknr;
354 lb->first_bcnt = lb->last_bcnt = blockcnt;
355 return 0;
356 }
357 /*
358 * Not a normal block. Always force a new range.
359 */
360 finish_range(lb);
361 if (lb->first)
362 lb->first = 0;
363 else
364 fprintf(lb->f, ", ");
365 if (blockcnt == -1)
366 fprintf(lb->f, "(IND):%d", *blocknr);
367 else if (blockcnt == -2)
368 fprintf(lb->f, "(DIND):%d", *blocknr);
369 else if (blockcnt == -3)
370 fprintf(lb->f, "(TIND):%d", *blocknr);
371 return 0;
372 }
373
374
375 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
376 {
377 struct list_blocks_struct lb;
378
379 fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
380 lb.total = 0;
381 lb.first_block = 0;
382 lb.f = f;
383 lb.first = 1;
384 ext2fs_block_iterate2(current_fs, inode, 0, NULL,
385 list_blocks_proc, (void *)&lb);
386 finish_range(&lb);
387 if (lb.total)
388 fprintf(f, "\n%sTOTAL: %lld\n", prefix, lb.total);
389 fprintf(f,"\n");
390 }
391
392
393 void internal_dump_inode(FILE *out, const char *prefix,
394 ext2_ino_t inode_num, struct ext2_inode *inode,
395 int do_dump_blocks)
396 {
397 const char *i_type;
398 char frag, fsize;
399 int os = current_fs->super->s_creator_os;
400
401 if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
402 else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
403 else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
404 else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
405 else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
406 else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
407 else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
408 else i_type = "bad type";
409 fprintf(out, "%sInode: %u Type: %s ", prefix, inode_num, i_type);
410 fprintf(out, "%sMode: %04o Flags: 0x%x Generation: %u\n",
411 prefix,
412 inode->i_mode & 0777, inode->i_flags, inode->i_generation);
413 fprintf(out, "%sUser: %5d Group: %5d Size: ",
414 prefix, inode->i_uid, inode->i_gid);
415 if (LINUX_S_ISREG(inode->i_mode)) {
416 __u64 i_size = (inode->i_size |
417 ((unsigned long long)inode->i_size_high << 32));
418
419 fprintf(out, "%lld\n", i_size);
420 } else
421 fprintf(out, "%d\n", inode->i_size);
422 if (current_fs->super->s_creator_os == EXT2_OS_HURD)
423 fprintf(out,
424 "%sFile ACL: %d Directory ACL: %d Translator: %d\n",
425 prefix,
426 inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
427 inode->osd1.hurd1.h_i_translator);
428 else
429 fprintf(out, "%sFile ACL: %d Directory ACL: %d\n",
430 prefix,
431 inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
432 fprintf(out, "%sLinks: %d Blockcount: %d\n",
433 prefix, inode->i_links_count, inode->i_blocks);
434 switch (os) {
435 case EXT2_OS_LINUX:
436 frag = inode->osd2.linux2.l_i_frag;
437 fsize = inode->osd2.linux2.l_i_fsize;
438 break;
439 case EXT2_OS_HURD:
440 frag = inode->osd2.hurd2.h_i_frag;
441 fsize = inode->osd2.hurd2.h_i_fsize;
442 break;
443 case EXT2_OS_MASIX:
444 frag = inode->osd2.masix2.m_i_frag;
445 fsize = inode->osd2.masix2.m_i_fsize;
446 break;
447 default:
448 frag = fsize = 0;
449 }
450 fprintf(out, "%sFragment: Address: %d Number: %d Size: %d\n",
451 prefix, inode->i_faddr, frag, fsize);
452 fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
453 time_to_string(inode->i_ctime));
454 fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
455 time_to_string(inode->i_atime));
456 fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
457 time_to_string(inode->i_mtime));
458 if (inode->i_dtime)
459 fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
460 time_to_string(inode->i_dtime));
461 if (LINUX_S_ISLNK(inode->i_mode) && inode->i_blocks == 0)
462 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
463 (int) inode->i_size, (char *)inode->i_block);
464 else if (do_dump_blocks)
465 dump_blocks(out, prefix, inode_num);
466 }
467
468 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode inode)
469 {
470 FILE *out;
471
472 out = open_pager();
473 internal_dump_inode(out, "", inode_num, &inode, 1);
474 close_pager(out);
475 }
476
477 void do_stat(int argc, char *argv[])
478 {
479 ext2_ino_t inode;
480 struct ext2_inode inode_buf;
481
482 if (common_inode_args_process(argc, argv, &inode, 0))
483 return;
484
485 if (debugfs_read_inode(inode, &inode_buf, argv[0]))
486 return;
487
488 dump_inode(inode,inode_buf);
489 return;
490 }
491
492 void do_chroot(int argc, char *argv[])
493 {
494 ext2_ino_t inode;
495 int retval;
496
497 if (common_inode_args_process(argc, argv, &inode, 0))
498 return;
499
500 retval = ext2fs_check_directory(current_fs, inode);
501 if (retval) {
502 com_err(argv[1], retval, "");
503 return;
504 }
505 root = inode;
506 }
507
508 void do_clri(int argc, char *argv[])
509 {
510 ext2_ino_t inode;
511 struct ext2_inode inode_buf;
512
513 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
514 return;
515
516 if (debugfs_read_inode(inode, &inode_buf, argv[0]))
517 return;
518 memset(&inode_buf, 0, sizeof(inode_buf));
519 if (debugfs_write_inode(inode, &inode_buf, argv[0]))
520 return;
521 }
522
523 void do_freei(int argc, char *argv[])
524 {
525 ext2_ino_t inode;
526
527 if (common_inode_args_process(argc, argv, &inode,
528 CHECK_FS_RW | CHECK_FS_BITMAPS))
529 return;
530
531 if (!ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
532 com_err(argv[0], 0, "Warning: inode already clear");
533 ext2fs_unmark_inode_bitmap(current_fs->inode_map,inode);
534 ext2fs_mark_ib_dirty(current_fs);
535 }
536
537 void do_seti(int argc, char *argv[])
538 {
539 ext2_ino_t inode;
540
541 if (common_inode_args_process(argc, argv, &inode,
542 CHECK_FS_RW | CHECK_FS_BITMAPS))
543 return;
544
545 if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
546 com_err(argv[0], 0, "Warning: inode already set");
547 ext2fs_mark_inode_bitmap(current_fs->inode_map,inode);
548 ext2fs_mark_ib_dirty(current_fs);
549 }
550
551 void do_testi(int argc, char *argv[])
552 {
553 ext2_ino_t inode;
554
555 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
556 return;
557
558 if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
559 printf("Inode %u is marked in use\n", inode);
560 else
561 printf("Inode %u is not in use\n", inode);
562 }
563
564 void do_freeb(int argc, char *argv[])
565 {
566 blk_t block;
567 int count = 1;
568
569 if (common_block_args_process(argc, argv, &block, &count))
570 return;
571 if (check_fs_read_write(argv[0]))
572 return;
573 while (count-- > 0) {
574 if (!ext2fs_test_block_bitmap(current_fs->block_map,block))
575 com_err(argv[0], 0, "Warning: block %d already clear",
576 block);
577 ext2fs_unmark_block_bitmap(current_fs->block_map,block);
578 block++;
579 }
580 ext2fs_mark_bb_dirty(current_fs);
581 }
582
583 void do_setb(int argc, char *argv[])
584 {
585 blk_t block;
586 int count = 1;
587
588 if (common_block_args_process(argc, argv, &block, &count))
589 return;
590 if (check_fs_read_write(argv[0]))
591 return;
592 while (count-- > 0) {
593 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
594 com_err(argv[0], 0, "Warning: block %d already set",
595 block);
596 ext2fs_mark_block_bitmap(current_fs->block_map,block);
597 block++;
598 }
599 ext2fs_mark_bb_dirty(current_fs);
600 }
601
602 void do_testb(int argc, char *argv[])
603 {
604 blk_t block;
605 int count = 1;
606
607 if (common_block_args_process(argc, argv, &block, &count))
608 return;
609 while (count-- > 0) {
610 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
611 printf("Block %d marked in use\n", block);
612 else
613 printf("Block %d not in use\n", block);
614 block++;
615 }
616 }
617
618 static void modify_u8(char *com, const char *prompt,
619 const char *format, __u8 *val)
620 {
621 char buf[200];
622 unsigned long v;
623 char *tmp;
624
625 sprintf(buf, format, *val);
626 printf("%30s [%s] ", prompt, buf);
627 fgets(buf, sizeof(buf), stdin);
628 if (buf[strlen (buf) - 1] == '\n')
629 buf[strlen (buf) - 1] = '\0';
630 if (!buf[0])
631 return;
632 v = strtoul(buf, &tmp, 0);
633 if (*tmp)
634 com_err(com, 0, "Bad value - %s", buf);
635 else
636 *val = v;
637 }
638
639 static void modify_u16(char *com, const char *prompt,
640 const char *format, __u16 *val)
641 {
642 char buf[200];
643 unsigned long v;
644 char *tmp;
645
646 sprintf(buf, format, *val);
647 printf("%30s [%s] ", prompt, buf);
648 fgets(buf, sizeof(buf), stdin);
649 if (buf[strlen (buf) - 1] == '\n')
650 buf[strlen (buf) - 1] = '\0';
651 if (!buf[0])
652 return;
653 v = strtoul(buf, &tmp, 0);
654 if (*tmp)
655 com_err(com, 0, "Bad value - %s", buf);
656 else
657 *val = v;
658 }
659
660 static void modify_u32(char *com, const char *prompt,
661 const char *format, __u32 *val)
662 {
663 char buf[200];
664 unsigned long v;
665 char *tmp;
666
667 sprintf(buf, format, *val);
668 printf("%30s [%s] ", prompt, buf);
669 fgets(buf, sizeof(buf), stdin);
670 if (buf[strlen (buf) - 1] == '\n')
671 buf[strlen (buf) - 1] = '\0';
672 if (!buf[0])
673 return;
674 v = strtoul(buf, &tmp, 0);
675 if (*tmp)
676 com_err(com, 0, "Bad value - %s", buf);
677 else
678 *val = v;
679 }
680
681
682 void do_modify_inode(int argc, char *argv[])
683 {
684 struct ext2_inode inode;
685 ext2_ino_t inode_num;
686 int i;
687 unsigned char *frag, *fsize;
688 char buf[80];
689 int os;
690 const char *hex_format = "0x%x";
691 const char *octal_format = "0%o";
692 const char *decimal_format = "%d";
693
694 if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
695 return;
696
697 os = current_fs->super->s_creator_os;
698
699 if (debugfs_read_inode(inode_num, &inode, argv[1]))
700 return;
701
702 modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
703 modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
704 modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
705 modify_u32(argv[0], "Size", decimal_format, &inode.i_size);
706 modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
707 modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
708 modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
709 modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
710 modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
711 modify_u32(argv[0], "Block count", decimal_format, &inode.i_blocks);
712 modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
713 modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
714 #if 0
715 modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
716 #endif
717 modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
718 if (LINUX_S_ISDIR(inode.i_mode))
719 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
720 else
721 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
722
723 if (current_fs->super->s_creator_os == EXT2_OS_HURD)
724 modify_u32(argv[0], "Translator Block",
725 decimal_format, &inode.osd1.hurd1.h_i_translator);
726
727 modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
728 switch (os) {
729 case EXT2_OS_LINUX:
730 frag = &inode.osd2.linux2.l_i_frag;
731 fsize = &inode.osd2.linux2.l_i_fsize;
732 break;
733 case EXT2_OS_HURD:
734 frag = &inode.osd2.hurd2.h_i_frag;
735 fsize = &inode.osd2.hurd2.h_i_fsize;
736 break;
737 case EXT2_OS_MASIX:
738 frag = &inode.osd2.masix2.m_i_frag;
739 fsize = &inode.osd2.masix2.m_i_fsize;
740 break;
741 default:
742 frag = fsize = 0;
743 }
744 if (frag)
745 modify_u8(argv[0], "Fragment number", decimal_format, frag);
746 if (fsize)
747 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
748
749 for (i=0; i < EXT2_NDIR_BLOCKS; i++) {
750 sprintf(buf, "Direct Block #%d", i);
751 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
752 }
753 modify_u32(argv[0], "Indirect Block", decimal_format,
754 &inode.i_block[EXT2_IND_BLOCK]);
755 modify_u32(argv[0], "Double Indirect Block", decimal_format,
756 &inode.i_block[EXT2_DIND_BLOCK]);
757 modify_u32(argv[0], "Triple Indirect Block", decimal_format,
758 &inode.i_block[EXT2_TIND_BLOCK]);
759 if (debugfs_write_inode(inode_num, &inode, argv[1]))
760 return;
761 }
762
763 void do_change_working_dir(int argc, char *argv[])
764 {
765 ext2_ino_t inode;
766 int retval;
767
768 if (common_inode_args_process(argc, argv, &inode, 0))
769 return;
770
771 retval = ext2fs_check_directory(current_fs, inode);
772 if (retval) {
773 com_err(argv[1], retval, "");
774 return;
775 }
776 cwd = inode;
777 return;
778 }
779
780 void do_print_working_directory(int argc, char *argv[])
781 {
782 int retval;
783 char *pathname = NULL;
784
785 if (common_args_process(argc, argv, 1, 1,
786 "print_working_directory", "", 0))
787 return;
788
789 retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
790 if (retval) {
791 com_err(argv[0], retval,
792 "while trying to get pathname of cwd");
793 }
794 printf("[pwd] INODE: %6u PATH: %s\n", cwd, pathname);
795 free(pathname);
796 retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
797 if (retval) {
798 com_err(argv[0], retval,
799 "while trying to get pathname of root");
800 }
801 printf("[root] INODE: %6u PATH: %s\n", root, pathname);
802 free(pathname);
803 return;
804 }
805
806 static void make_link(char *sourcename, char *destname)
807 {
808 ext2_ino_t inode;
809 int retval;
810 ext2_ino_t dir;
811 char *dest, *cp, *basename;
812
813 /*
814 * Get the source inode
815 */
816 inode = string_to_inode(sourcename);
817 if (!inode)
818 return;
819 basename = strrchr(sourcename, '/');
820 if (basename)
821 basename++;
822 else
823 basename = sourcename;
824 /*
825 * Figure out the destination. First see if it exists and is
826 * a directory.
827 */
828 if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
829 dest = basename;
830 else {
831 /*
832 * OK, it doesn't exist. See if it is
833 * '<dir>/basename' or 'basename'
834 */
835 cp = strrchr(destname, '/');
836 if (cp) {
837 *cp = 0;
838 dir = string_to_inode(destname);
839 if (!dir)
840 return;
841 dest = cp+1;
842 } else {
843 dir = cwd;
844 dest = destname;
845 }
846 }
847
848 retval = ext2fs_link(current_fs, dir, dest, inode, 0);
849 if (retval)
850 com_err("make_link", retval, "");
851 return;
852 }
853
854
855 void do_link(int argc, char *argv[])
856 {
857 if (common_args_process(argc, argv, 3, 3, "link",
858 "<source file> <dest_name>", CHECK_FS_RW))
859 return;
860
861 make_link(argv[1], argv[2]);
862 }
863
864 static int mark_blocks_proc(ext2_filsys fs, blk_t *blocknr,
865 int blockcnt, void *private)
866 {
867 blk_t block;
868
869 block = *blocknr;
870 ext2fs_block_alloc_stats(fs, block, +1);
871 return 0;
872 }
873
874 void do_undel(int argc, char *argv[])
875 {
876 ext2_ino_t ino;
877 struct ext2_inode inode;
878
879 if (common_args_process(argc, argv, 3, 3, "undelete",
880 "<inode_num> <dest_name>",
881 CHECK_FS_RW | CHECK_FS_BITMAPS))
882 return;
883
884 ino = string_to_inode(argv[1]);
885 if (!ino)
886 return;
887
888 if (debugfs_read_inode(ino, &inode, argv[1]))
889 return;
890
891 if (ext2fs_test_inode_bitmap(current_fs->inode_map, ino)) {
892 com_err(argv[1], 0, "Inode is not marked as deleted");
893 return;
894 }
895
896 /*
897 * XXX this function doesn't handle changing the links count on the
898 * parent directory when undeleting a directory.
899 */
900 inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
901 inode.i_dtime = 0;
902
903 if (debugfs_write_inode(ino, &inode, argv[0]))
904 return;
905
906 ext2fs_block_iterate(current_fs, ino, 0, NULL,
907 mark_blocks_proc, NULL);
908
909 ext2fs_inode_alloc_stats(current_fs, ino, +1);
910
911 make_link(argv[1], argv[2]);
912 }
913
914 static void unlink_file_by_name(char *filename)
915 {
916 int retval;
917 ext2_ino_t dir;
918 char *basename;
919
920 basename = strrchr(filename, '/');
921 if (basename) {
922 *basename++ = '\0';
923 dir = string_to_inode(filename);
924 if (!dir)
925 return;
926 } else {
927 dir = cwd;
928 basename = filename;
929 }
930 retval = ext2fs_unlink(current_fs, dir, basename, 0, 0);
931 if (retval)
932 com_err("unlink_file_by_name", retval, "");
933 return;
934 }
935
936 void do_unlink(int argc, char *argv[])
937 {
938 if (common_args_process(argc, argv, 2, 2, "link",
939 "<pathname>", CHECK_FS_RW))
940 return;
941
942 unlink_file_by_name(argv[1]);
943 }
944
945 void do_find_free_block(int argc, char *argv[])
946 {
947 blk_t free_blk, goal;
948 int count;
949 errcode_t retval;
950 char *tmp;
951
952 if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
953 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
954 return;
955 }
956 if (check_fs_open(argv[0]))
957 return;
958
959 if (argc > 1) {
960 count = strtol(argv[1],&tmp,0);
961 if (*tmp) {
962 com_err(argv[0], 0, "Bad count - %s", argv[1]);
963 return;
964 }
965 } else
966 count = 1;
967
968 if (argc > 2) {
969 goal = strtol(argv[2], &tmp, 0);
970 if (*tmp) {
971 com_err(argv[0], 0, "Bad goal - %s", argv[1]);
972 return;
973 }
974 }
975 else
976 goal = current_fs->super->s_first_data_block;
977
978 printf("Free blocks found: ");
979 free_blk = goal - 1;
980 while (count-- > 0) {
981 retval = ext2fs_new_block(current_fs, free_blk + 1, 0,
982 &free_blk);
983 if (retval) {
984 com_err("ext2fs_new_block", retval, "");
985 return;
986 } else
987 printf("%d ", free_blk);
988 }
989 printf("\n");
990 }
991
992 void do_find_free_inode(int argc, char *argv[])
993 {
994 ext2_ino_t free_inode, dir;
995 int mode;
996 int retval;
997 char *tmp;
998
999 if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1000 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1001 return;
1002 }
1003 if (check_fs_open(argv[0]))
1004 return;
1005
1006 if (argc > 1) {
1007 dir = strtol(argv[1], &tmp, 0);
1008 if (*tmp) {
1009 com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1010 return;
1011 }
1012 }
1013 else
1014 dir = root;
1015 if (argc > 2) {
1016 mode = strtol(argv[2], &tmp, 0);
1017 if (*tmp) {
1018 com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1019 return;
1020 }
1021 } else
1022 mode = 010755;
1023
1024 retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1025 if (retval)
1026 com_err("ext2fs_new_inode", retval, "");
1027 else
1028 printf("Free inode found: %u\n", free_inode);
1029 }
1030
1031 static errcode_t copy_file(int fd, ext2_ino_t newfile)
1032 {
1033 ext2_file_t e2_file;
1034 errcode_t retval;
1035 int got;
1036 unsigned int written;
1037 char buf[8192];
1038 char *ptr;
1039
1040 retval = ext2fs_file_open(current_fs, newfile,
1041 EXT2_FILE_WRITE, &e2_file);
1042 if (retval)
1043 return retval;
1044
1045 while (1) {
1046 got = read(fd, buf, sizeof(buf));
1047 if (got == 0)
1048 break;
1049 if (got < 0) {
1050 retval = errno;
1051 goto fail;
1052 }
1053 ptr = buf;
1054 while (got > 0) {
1055 retval = ext2fs_file_write(e2_file, ptr,
1056 got, &written);
1057 if (retval)
1058 goto fail;
1059
1060 got -= written;
1061 ptr += written;
1062 }
1063 }
1064 retval = ext2fs_file_close(e2_file);
1065 return retval;
1066
1067 fail:
1068 (void) ext2fs_file_close(e2_file);
1069 return retval;
1070 }
1071
1072
1073 void do_write(int argc, char *argv[])
1074 {
1075 int fd;
1076 struct stat statbuf;
1077 ext2_ino_t newfile;
1078 errcode_t retval;
1079 struct ext2_inode inode;
1080
1081 if (common_args_process(argc, argv, 3, 3, "write",
1082 "<native file> <new file>", CHECK_FS_RW))
1083 return;
1084
1085 fd = open(argv[1], O_RDONLY);
1086 if (fd < 0) {
1087 com_err(argv[1], errno, "");
1088 return;
1089 }
1090 if (fstat(fd, &statbuf) < 0) {
1091 com_err(argv[1], errno, "");
1092 close(fd);
1093 return;
1094 }
1095
1096 retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1097 if (retval) {
1098 com_err(argv[0], retval, "");
1099 close(fd);
1100 return;
1101 }
1102 printf("Allocated inode: %u\n", newfile);
1103 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1104 EXT2_FT_REG_FILE);
1105 if (retval) {
1106 com_err(argv[2], retval, "");
1107 close(fd);
1108 return;
1109 }
1110 if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1111 com_err(argv[0], 0, "Warning: inode already set");
1112 ext2fs_inode_alloc_stats(current_fs, newfile, +1);
1113 memset(&inode, 0, sizeof(inode));
1114 inode.i_mode = statbuf.st_mode;
1115 inode.i_atime = inode.i_ctime = inode.i_mtime = time(NULL);
1116 inode.i_links_count = 1;
1117 inode.i_size = statbuf.st_size;
1118 if (debugfs_write_inode(newfile, &inode, argv[0])) {
1119 close(fd);
1120 return;
1121 }
1122 if (LINUX_S_ISREG(inode.i_mode)) {
1123 retval = copy_file(fd, newfile);
1124 if (retval)
1125 com_err("copy_file", retval, "");
1126 }
1127 close(fd);
1128 }
1129
1130 void do_mknod(int argc, char *argv[])
1131 {
1132 unsigned long mode, major, minor, nr;
1133 ext2_ino_t newfile;
1134 errcode_t retval;
1135 struct ext2_inode inode;
1136 int filetype;
1137
1138 if (check_fs_open(argv[0]))
1139 return;
1140 if (argc < 3 || argv[2][1]) {
1141 usage:
1142 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1143 return;
1144 }
1145 mode = minor = major = 0;
1146 switch (argv[2][0]) {
1147 case 'p':
1148 mode = LINUX_S_IFIFO;
1149 filetype = EXT2_FT_FIFO;
1150 nr = 3;
1151 break;
1152 case 'c':
1153 mode = LINUX_S_IFCHR;
1154 filetype = EXT2_FT_CHRDEV;
1155 nr = 5;
1156 break;
1157 case 'b':
1158 mode = LINUX_S_IFBLK;
1159 filetype = EXT2_FT_BLKDEV;
1160 nr = 5;
1161 break;
1162 default:
1163 filetype = 0;
1164 nr = 0;
1165 }
1166 if (nr == 5) {
1167 major = strtoul(argv[3], argv+3, 0);
1168 minor = strtoul(argv[4], argv+4, 0);
1169 if (major > 255 || minor > 255 || argv[3][0] || argv[4][0])
1170 nr = 0;
1171 }
1172 if (argc != nr)
1173 goto usage;
1174 if (check_fs_read_write(argv[0]))
1175 return;
1176 retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1177 if (retval) {
1178 com_err(argv[0], retval, "");
1179 return;
1180 }
1181 printf("Allocated inode: %u\n", newfile);
1182 retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1183 if (retval) {
1184 if (retval == EXT2_ET_DIR_NO_SPACE) {
1185 retval = ext2fs_expand_dir(current_fs, cwd);
1186 if (!retval)
1187 retval = ext2fs_link(current_fs, cwd,
1188 argv[1], newfile,
1189 filetype);
1190 }
1191 if (retval) {
1192 com_err(argv[1], retval, "");
1193 return;
1194 }
1195 }
1196 if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1197 com_err(argv[0], 0, "Warning: inode already set");
1198 ext2fs_mark_inode_bitmap(current_fs->inode_map, newfile);
1199 ext2fs_mark_ib_dirty(current_fs);
1200 memset(&inode, 0, sizeof(inode));
1201 inode.i_mode = mode;
1202 inode.i_atime = inode.i_ctime = inode.i_mtime = time(NULL);
1203 inode.i_block[0] = major*256+minor;
1204 inode.i_links_count = 1;
1205 if (debugfs_write_inode(newfile, &inode, argv[0]))
1206 return;
1207 }
1208
1209 void do_mkdir(int argc, char *argv[])
1210 {
1211 char *cp;
1212 ext2_ino_t parent;
1213 char *name;
1214 errcode_t retval;
1215
1216 if (common_args_process(argc, argv, 2, 2, "mkdir",
1217 "<filename>", CHECK_FS_RW))
1218 return;
1219
1220 cp = strrchr(argv[1], '/');
1221 if (cp) {
1222 *cp = 0;
1223 parent = string_to_inode(argv[1]);
1224 if (!parent) {
1225 com_err(argv[1], ENOENT, "");
1226 return;
1227 }
1228 name = cp+1;
1229 } else {
1230 parent = cwd;
1231 name = argv[1];
1232 }
1233
1234
1235 retval = ext2fs_mkdir(current_fs, parent, 0, name);
1236 if (retval) {
1237 com_err("ext2fs_mkdir", retval, "");
1238 return;
1239 }
1240
1241 }
1242
1243 void do_rmdir(int argc, char *argv[])
1244 {
1245 printf("Unimplemented\n");
1246 }
1247
1248
1249 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1250 int blockcnt, void *private)
1251 {
1252 blk_t block;
1253
1254 block = *blocknr;
1255 ext2fs_block_alloc_stats(fs, block, -1);
1256 return 0;
1257 }
1258
1259 static void kill_file_by_inode(ext2_ino_t inode)
1260 {
1261 struct ext2_inode inode_buf;
1262
1263 if (debugfs_read_inode(inode, &inode_buf, 0))
1264 return;
1265 inode_buf.i_dtime = time(NULL);
1266 if (debugfs_write_inode(inode, &inode_buf, 0))
1267 return;
1268
1269 printf("Kill file by inode %u\n", inode);
1270 ext2fs_block_iterate(current_fs, inode, 0, NULL,
1271 release_blocks_proc, NULL);
1272 printf("\n");
1273 ext2fs_inode_alloc_stats(current_fs, inode, -1);
1274 }
1275
1276
1277 void do_kill_file(int argc, char *argv[])
1278 {
1279 ext2_ino_t inode_num;
1280
1281 if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1282 return;
1283
1284 kill_file_by_inode(inode_num);
1285 }
1286
1287 void do_rm(int argc, char *argv[])
1288 {
1289 int retval;
1290 ext2_ino_t inode_num;
1291 struct ext2_inode inode;
1292
1293 if (common_args_process(argc, argv, 2, 2, "rm",
1294 "<filename>", CHECK_FS_RW))
1295 return;
1296
1297 retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1298 if (retval) {
1299 com_err(argv[0], retval, "while trying to resolve filename");
1300 return;
1301 }
1302
1303 if (debugfs_read_inode(inode_num, &inode, argv[0]))
1304 return;
1305
1306 if (LINUX_S_ISDIR(inode.i_mode)) {
1307 com_err(argv[0], 0, "file is a directory");
1308 return;
1309 }
1310
1311 --inode.i_links_count;
1312 if (debugfs_write_inode(inode_num, &inode, argv[0]))
1313 return;
1314
1315 unlink_file_by_name(argv[1]);
1316 if (inode.i_links_count == 0)
1317 kill_file_by_inode(inode_num);
1318 }
1319
1320 void do_show_debugfs_params(int argc, char *argv[])
1321 {
1322 FILE *out = stdout;
1323
1324 if (current_fs)
1325 fprintf(out, "Open mode: read-%s\n",
1326 current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1327 fprintf(out, "Filesystem in use: %s\n",
1328 current_fs ? current_fs->device_name : "--none--");
1329 }
1330
1331 void do_expand_dir(int argc, char *argv[])
1332 {
1333 ext2_ino_t inode;
1334 int retval;
1335
1336 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1337 return;
1338
1339 retval = ext2fs_expand_dir(current_fs, inode);
1340 if (retval)
1341 com_err("ext2fs_expand_dir", retval, "");
1342 return;
1343 }
1344
1345 void do_features(int argc, char *argv[])
1346 {
1347 int i;
1348
1349 if (check_fs_open(argv[0]))
1350 return;
1351
1352 if ((argc != 1) && check_fs_read_write(argv[0]))
1353 return;
1354 for (i=1; i < argc; i++) {
1355 if (e2p_edit_feature(argv[i],
1356 &current_fs->super->s_feature_compat, 0))
1357 com_err(argv[0], 0, "Unknown feature: %s\n",
1358 argv[i]);
1359 else
1360 ext2fs_mark_super_dirty(current_fs);
1361 }
1362 print_features(current_fs->super, stdout);
1363 }
1364
1365 static int source_file(const char *cmd_file, int sci_idx)
1366 {
1367 FILE *f;
1368 char buf[256];
1369 char *cp;
1370 int exit_status = 0;
1371 int retval;
1372
1373 if (strcmp(cmd_file, "-") == 0)
1374 f = stdin;
1375 else {
1376 f = fopen(cmd_file, "r");
1377 if (!f) {
1378 perror(cmd_file);
1379 exit(1);
1380 }
1381 }
1382 setbuf(stdout, NULL);
1383 setbuf(stderr, NULL);
1384 while (!feof(f)) {
1385 if (fgets(buf, sizeof(buf), f) == NULL)
1386 break;
1387 cp = strchr(buf, '\n');
1388 if (cp)
1389 *cp = 0;
1390 cp = strchr(buf, '\r');
1391 if (cp)
1392 *cp = 0;
1393 printf("debugfs: %s\n", buf);
1394 retval = ss_execute_line(sci_idx, buf);
1395 if (retval) {
1396 ss_perror(sci_idx, retval, buf);
1397 exit_status++;
1398 }
1399 }
1400 return exit_status;
1401 }
1402
1403 int main(int argc, char **argv)
1404 {
1405 int retval;
1406 int sci_idx;
1407 const char *usage = "Usage: debugfs [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]";
1408 int c;
1409 int open_flags = 0;
1410 char *request = 0;
1411 int exit_status = 0;
1412 char *cmd_file = 0;
1413 blk_t superblock = 0;
1414 blk_t blocksize = 0;
1415 int catastrophic = 0;
1416
1417 initialize_ext2_error_table();
1418 fprintf (stderr, "debugfs %s (%s)\n", E2FSPROGS_VERSION,
1419 E2FSPROGS_DATE);
1420
1421 while ((c = getopt (argc, argv, "iwcR:f:b:s:V")) != EOF) {
1422 switch (c) {
1423 case 'R':
1424 request = optarg;
1425 break;
1426 case 'f':
1427 cmd_file = optarg;
1428 break;
1429 case 'i':
1430 open_flags |= EXT2_FLAG_IMAGE_FILE;
1431 break;
1432 case 'w':
1433 open_flags |= EXT2_FLAG_RW;
1434 break;
1435 case 'b':
1436 blocksize = parse_ulong(argv[0], optarg,
1437 "block size", 0);
1438 break;
1439 case 's':
1440 superblock = parse_ulong(argv[0], optarg,
1441 "superblock number", 0);
1442 break;
1443 case 'c':
1444 catastrophic = 1;
1445 break;
1446 case 'V':
1447 /* Print version number and exit */
1448 fprintf(stderr, "\tUsing %s\n",
1449 error_message(EXT2_ET_BASE));
1450 exit(0);
1451 default:
1452 com_err(argv[0], 0, usage);
1453 return 1;
1454 }
1455 }
1456 if (optind < argc)
1457 open_filesystem(argv[optind], open_flags,
1458 superblock, blocksize, catastrophic);
1459
1460 sci_idx = ss_create_invocation("debugfs", "0.0", (char *) NULL,
1461 &debug_cmds, &retval);
1462 if (retval) {
1463 ss_perror(sci_idx, retval, "creating invocation");
1464 exit(1);
1465 }
1466
1467 (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
1468 if (retval) {
1469 ss_perror(sci_idx, retval, "adding standard requests");
1470 exit (1);
1471 }
1472 if (request) {
1473 retval = 0;
1474 retval = ss_execute_line(sci_idx, request);
1475 if (retval) {
1476 ss_perror(sci_idx, retval, request);
1477 exit_status++;
1478 }
1479 } else if (cmd_file) {
1480 exit_status = source_file(cmd_file, sci_idx);
1481 } else {
1482 ss_listen(sci_idx);
1483 }
1484
1485 if (current_fs)
1486 close_filesystem();
1487
1488 return exit_status;
1489 }
Unnamed repository; edit this file 'description' to name the repository.