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Merge branch 'maint' into next
[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_ERRNO_H
24 #include <errno.h>
25 #endif
26 #include <fcntl.h>
27 #include <sys/types.h>
28 #include <sys/stat.h>
29
30 #include "et/com_err.h"
31 #include "ss/ss.h"
32 #include "debugfs.h"
33 #include "uuid/uuid.h"
34 #include "e2p/e2p.h"
35
36 #include <ext2fs/ext2_ext_attr.h>
37
38 #include "../version.h"
39
40 extern ss_request_table debug_cmds;
41
42 ext2_filsys current_fs = NULL;
43 ext2_ino_t root, cwd;
44
45 static void open_filesystem(char *device, int open_flags, blk_t superblock,
46 blk_t blocksize, int catastrophic,
47 char *data_filename)
48 {
49 int retval;
50 io_channel data_io = 0;
51
52 if (superblock != 0 && blocksize == 0) {
53 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
54 current_fs = NULL;
55 return;
56 }
57
58 if (data_filename) {
59 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
60 com_err(device, 0,
61 "The -d option is only valid when reading an e2image file");
62 current_fs = NULL;
63 return;
64 }
65 retval = unix_io_manager->open(data_filename, 0, &data_io);
66 if (retval) {
67 com_err(data_filename, 0, "while opening data source");
68 current_fs = NULL;
69 return;
70 }
71 }
72
73 if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
74 com_err(device, 0,
75 "opening read-only because of catastrophic mode");
76 open_flags &= ~EXT2_FLAG_RW;
77 }
78
79 retval = ext2fs_open(device, open_flags, superblock, blocksize,
80 unix_io_manager, &current_fs);
81 if (retval) {
82 com_err(device, retval, "while opening filesystem");
83 current_fs = NULL;
84 return;
85 }
86
87 if (catastrophic)
88 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
89 else {
90 retval = ext2fs_read_inode_bitmap(current_fs);
91 if (retval) {
92 com_err(device, retval, "while reading inode bitmap");
93 goto errout;
94 }
95 retval = ext2fs_read_block_bitmap(current_fs);
96 if (retval) {
97 com_err(device, retval, "while reading block bitmap");
98 goto errout;
99 }
100 }
101
102 if (data_io) {
103 retval = ext2fs_set_data_io(current_fs, data_io);
104 if (retval) {
105 com_err(device, retval,
106 "while setting data source");
107 goto errout;
108 }
109 }
110
111 root = cwd = EXT2_ROOT_INO;
112 return;
113
114 errout:
115 retval = ext2fs_close(current_fs);
116 if (retval)
117 com_err(device, retval, "while trying to close filesystem");
118 current_fs = NULL;
119 }
120
121 void do_open_filesys(int argc, char **argv)
122 {
123 int c, err;
124 int catastrophic = 0;
125 blk_t superblock = 0;
126 blk_t blocksize = 0;
127 int open_flags = EXT2_FLAG_SOFTSUPP_FEATURES;
128 char *data_filename = 0;
129
130 reset_getopt();
131 while ((c = getopt (argc, argv, "iwfecb:s:d:")) != EOF) {
132 switch (c) {
133 case 'i':
134 open_flags |= EXT2_FLAG_IMAGE_FILE;
135 break;
136 case 'w':
137 open_flags |= EXT2_FLAG_RW;
138 break;
139 case 'f':
140 open_flags |= EXT2_FLAG_FORCE;
141 break;
142 case 'e':
143 open_flags |= EXT2_FLAG_EXCLUSIVE;
144 break;
145 case 'c':
146 catastrophic = 1;
147 break;
148 case 'd':
149 data_filename = optarg;
150 break;
151 case 'b':
152 blocksize = parse_ulong(optarg, argv[0],
153 "block size", &err);
154 if (err)
155 return;
156 break;
157 case 's':
158 superblock = parse_ulong(optarg, argv[0],
159 "superblock number", &err);
160 if (err)
161 return;
162 break;
163 default:
164 goto print_usage;
165 }
166 }
167 if (optind != argc-1) {
168 goto print_usage;
169 }
170 if (check_fs_not_open(argv[0]))
171 return;
172 open_filesystem(argv[optind], open_flags,
173 superblock, blocksize, catastrophic,
174 data_filename);
175 return;
176
177 print_usage:
178 fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] "
179 "[-c] [-w] <device>\n", argv[0]);
180 }
181
182 void do_lcd(int argc, char **argv)
183 {
184 if (argc != 2) {
185 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>");
186 return;
187 }
188
189 if (chdir(argv[1]) == -1) {
190 com_err(argv[0], errno,
191 "while trying to change native directory to %s",
192 argv[1]);
193 return;
194 }
195 }
196
197 static void close_filesystem(NOARGS)
198 {
199 int retval;
200
201 if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
202 retval = ext2fs_write_inode_bitmap(current_fs);
203 if (retval)
204 com_err("ext2fs_write_inode_bitmap", retval, 0);
205 }
206 if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
207 retval = ext2fs_write_block_bitmap(current_fs);
208 if (retval)
209 com_err("ext2fs_write_block_bitmap", retval, 0);
210 }
211 retval = ext2fs_close(current_fs);
212 if (retval)
213 com_err("ext2fs_close", retval, 0);
214 current_fs = NULL;
215 return;
216 }
217
218 void do_close_filesys(int argc, char **argv)
219 {
220 if (common_args_process(argc, argv, 1, 1, "close_filesys", "", 0))
221 return;
222 close_filesystem();
223 }
224
225 void do_init_filesys(int argc, char **argv)
226 {
227 struct ext2_super_block param;
228 errcode_t retval;
229 int err;
230
231 if (common_args_process(argc, argv, 3, 3, "initialize",
232 "<device> <blocksize>", CHECK_FS_NOTOPEN))
233 return;
234
235 memset(&param, 0, sizeof(struct ext2_super_block));
236 param.s_blocks_count = parse_ulong(argv[2], argv[0],
237 "blocks count", &err);
238 if (err)
239 return;
240 retval = ext2fs_initialize(argv[1], 0, &param,
241 unix_io_manager, &current_fs);
242 if (retval) {
243 com_err(argv[1], retval, "while initializing filesystem");
244 current_fs = NULL;
245 return;
246 }
247 root = cwd = EXT2_ROOT_INO;
248 return;
249 }
250
251 static void print_features(struct ext2_super_block * s, FILE *f)
252 {
253 int i, j, printed=0;
254 __u32 *mask = &s->s_feature_compat, m;
255
256 fputs("Filesystem features:", f);
257 for (i=0; i <3; i++,mask++) {
258 for (j=0,m=1; j < 32; j++, m<<=1) {
259 if (*mask & m) {
260 fprintf(f, " %s", e2p_feature2string(i, m));
261 printed++;
262 }
263 }
264 }
265 if (printed == 0)
266 fputs("(none)", f);
267 fputs("\n", f);
268 }
269
270 static void print_bg_opts(struct ext2_group_desc *gdp, int mask,
271 const char *str, int *first, FILE *f)
272 {
273 if (gdp->bg_flags & mask) {
274 if (*first) {
275 fputs(" [", f);
276 *first = 0;
277 } else
278 fputs(", ", f);
279 fputs(str, f);
280 }
281 }
282
283 void do_show_super_stats(int argc, char *argv[])
284 {
285 dgrp_t i;
286 FILE *out;
287 struct ext2_group_desc *gdp;
288 int c, header_only = 0;
289 int numdirs = 0, first;
290
291 reset_getopt();
292 while ((c = getopt (argc, argv, "h")) != EOF) {
293 switch (c) {
294 case 'h':
295 header_only++;
296 break;
297 default:
298 goto print_usage;
299 }
300 }
301 if (optind != argc) {
302 goto print_usage;
303 }
304 if (check_fs_open(argv[0]))
305 return;
306 out = open_pager();
307
308 list_super2(current_fs->super, out);
309 for (i=0; i < current_fs->group_desc_count; i++)
310 numdirs += current_fs->group_desc[i].bg_used_dirs_count;
311 fprintf(out, "Directories: %d\n", numdirs);
312
313 if (header_only) {
314 close_pager(out);
315 return;
316 }
317
318 gdp = &current_fs->group_desc[0];
319 for (i = 0; i < current_fs->group_desc_count; i++, gdp++) {
320 fprintf(out, " Group %2d: block bitmap at %u, "
321 "inode bitmap at %u, "
322 "inode table at %u\n"
323 " %d free %s, "
324 "%d free %s, "
325 "%d used %s\n",
326 i, gdp->bg_block_bitmap,
327 gdp->bg_inode_bitmap, gdp->bg_inode_table,
328 gdp->bg_free_blocks_count,
329 gdp->bg_free_blocks_count != 1 ? "blocks" : "block",
330 gdp->bg_free_inodes_count,
331 gdp->bg_free_inodes_count != 1 ? "inodes" : "inode",
332 gdp->bg_used_dirs_count,
333 gdp->bg_used_dirs_count != 1 ? "directories"
334 : "directory");
335 first = 1;
336 print_bg_opts(gdp, EXT2_BG_INODE_UNINIT, "Inode not init",
337 &first, out);
338 print_bg_opts(gdp, EXT2_BG_BLOCK_UNINIT, "Block not init",
339 &first, out);
340 if (!first)
341 fputs("]\n", out);
342 }
343 close_pager(out);
344 return;
345 print_usage:
346 fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
347 }
348
349 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
350 char **argv EXT2FS_ATTR((unused)))
351 {
352 if (check_fs_open(argv[0]))
353 return;
354 if (check_fs_read_write(argv[0]))
355 return;
356
357 if (argv[1] && !strcmp(argv[1], "-clean"))
358 current_fs->super->s_state |= EXT2_VALID_FS;
359 else
360 current_fs->super->s_state &= ~EXT2_VALID_FS;
361 ext2fs_mark_super_dirty(current_fs);
362 }
363
364 struct list_blocks_struct {
365 FILE *f;
366 e2_blkcnt_t total;
367 blk_t first_block, last_block;
368 e2_blkcnt_t first_bcnt, last_bcnt;
369 e2_blkcnt_t first;
370 };
371
372 static void finish_range(struct list_blocks_struct *lb)
373 {
374 if (lb->first_block == 0)
375 return;
376 if (lb->first)
377 lb->first = 0;
378 else
379 fprintf(lb->f, ", ");
380 if (lb->first_block == lb->last_block)
381 fprintf(lb->f, "(%lld):%u",
382 (long long)lb->first_bcnt, lb->first_block);
383 else
384 fprintf(lb->f, "(%lld-%lld):%u-%u",
385 (long long)lb->first_bcnt, (long long)lb->last_bcnt,
386 lb->first_block, lb->last_block);
387 lb->first_block = 0;
388 }
389
390 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
391 blk_t *blocknr, e2_blkcnt_t blockcnt,
392 blk_t ref_block EXT2FS_ATTR((unused)),
393 int ref_offset EXT2FS_ATTR((unused)),
394 void *private)
395 {
396 struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
397
398 lb->total++;
399 if (blockcnt >= 0) {
400 /*
401 * See if we can add on to the existing range (if it exists)
402 */
403 if (lb->first_block &&
404 (lb->last_block+1 == *blocknr) &&
405 (lb->last_bcnt+1 == blockcnt)) {
406 lb->last_block = *blocknr;
407 lb->last_bcnt = blockcnt;
408 return 0;
409 }
410 /*
411 * Start a new range.
412 */
413 finish_range(lb);
414 lb->first_block = lb->last_block = *blocknr;
415 lb->first_bcnt = lb->last_bcnt = blockcnt;
416 return 0;
417 }
418 /*
419 * Not a normal block. Always force a new range.
420 */
421 finish_range(lb);
422 if (lb->first)
423 lb->first = 0;
424 else
425 fprintf(lb->f, ", ");
426 if (blockcnt == -1)
427 fprintf(lb->f, "(IND):%u", *blocknr);
428 else if (blockcnt == -2)
429 fprintf(lb->f, "(DIND):%u", *blocknr);
430 else if (blockcnt == -3)
431 fprintf(lb->f, "(TIND):%u", *blocknr);
432 return 0;
433 }
434
435 static void dump_xattr_string(FILE *out, const char *str, int len)
436 {
437 int printable = 1;
438 int i;
439
440 /* check is string printable? */
441 for (i = 0; i < len; i++)
442 if (!isprint(str[i])) {
443 printable = 0;
444 break;
445 }
446
447 for (i = 0; i < len; i++)
448 if (printable)
449 fprintf(out, "%c", (unsigned char)str[i]);
450 else
451 fprintf(out, "%02x ", (unsigned char)str[i]);
452 }
453
454 static void internal_dump_inode_extra(FILE *out,
455 const char *prefix EXT2FS_ATTR((unused)),
456 ext2_ino_t inode_num EXT2FS_ATTR((unused)),
457 struct ext2_inode_large *inode)
458 {
459 struct ext2_ext_attr_entry *entry;
460 __u32 *magic;
461 char *start, *end;
462 unsigned int storage_size;
463
464 fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
465 if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
466 EXT2_GOOD_OLD_INODE_SIZE) {
467 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
468 inode->i_extra_isize);
469 return;
470 }
471 storage_size = EXT2_INODE_SIZE(current_fs->super) -
472 EXT2_GOOD_OLD_INODE_SIZE -
473 inode->i_extra_isize;
474 magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
475 inode->i_extra_isize);
476 if (*magic == EXT2_EXT_ATTR_MAGIC) {
477 fprintf(out, "Extended attributes stored in inode body: \n");
478 end = (char *) inode + EXT2_INODE_SIZE(current_fs->super);
479 start = (char *) magic + sizeof(__u32);
480 entry = (struct ext2_ext_attr_entry *) start;
481 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
482 struct ext2_ext_attr_entry *next =
483 EXT2_EXT_ATTR_NEXT(entry);
484 if (entry->e_value_size > storage_size ||
485 (char *) next >= end) {
486 fprintf(out, "invalid EA entry in inode\n");
487 return;
488 }
489 fprintf(out, " ");
490 dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry),
491 entry->e_name_len);
492 fprintf(out, " = \"");
493 dump_xattr_string(out, start + entry->e_value_offs,
494 entry->e_value_size);
495 fprintf(out, "\" (%u)\n", entry->e_value_size);
496 entry = next;
497 }
498 }
499 }
500
501 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
502 {
503 struct list_blocks_struct lb;
504
505 fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
506 lb.total = 0;
507 lb.first_block = 0;
508 lb.f = f;
509 lb.first = 1;
510 ext2fs_block_iterate2(current_fs, inode, 0, NULL,
511 list_blocks_proc, (void *)&lb);
512 finish_range(&lb);
513 if (lb.total)
514 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
515 fprintf(f,"\n");
516 }
517
518
519 void internal_dump_inode(FILE *out, const char *prefix,
520 ext2_ino_t inode_num, struct ext2_inode *inode,
521 int do_dump_blocks)
522 {
523 const char *i_type;
524 char frag, fsize;
525 int os = current_fs->super->s_creator_os;
526
527 if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
528 else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
529 else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
530 else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
531 else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
532 else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
533 else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
534 else i_type = "bad type";
535 fprintf(out, "%sInode: %u Type: %s ", prefix, inode_num, i_type);
536 fprintf(out, "%sMode: %04o Flags: 0x%x Generation: %u\n",
537 prefix,
538 inode->i_mode & 0777, inode->i_flags, inode->i_generation);
539 fprintf(out, "%sUser: %5d Group: %5d Size: ",
540 prefix, inode_uid(*inode), inode_gid(*inode));
541 if (LINUX_S_ISREG(inode->i_mode)) {
542 unsigned long long i_size = (inode->i_size |
543 ((unsigned long long)inode->i_size_high << 32));
544
545 fprintf(out, "%llu\n", i_size);
546 } else
547 fprintf(out, "%d\n", inode->i_size);
548 if (os == EXT2_OS_HURD)
549 fprintf(out,
550 "%sFile ACL: %d Directory ACL: %d Translator: %d\n",
551 prefix,
552 inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
553 inode->osd1.hurd1.h_i_translator);
554 else
555 fprintf(out, "%sFile ACL: %d Directory ACL: %d\n",
556 prefix,
557 inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
558 if (os == EXT2_OS_LINUX)
559 fprintf(out, "%sLinks: %d Blockcount: %llu\n",
560 prefix, inode->i_links_count,
561 (((unsigned long long)
562 inode->osd2.linux2.l_i_blocks_hi << 32)) +
563 inode->i_blocks);
564 else
565 fprintf(out, "%sLinks: %d Blockcount: %u\n",
566 prefix, inode->i_links_count, inode->i_blocks);
567 switch (os) {
568 case EXT2_OS_HURD:
569 frag = inode->osd2.hurd2.h_i_frag;
570 fsize = inode->osd2.hurd2.h_i_fsize;
571 break;
572 default:
573 frag = fsize = 0;
574 }
575 fprintf(out, "%sFragment: Address: %d Number: %d Size: %d\n",
576 prefix, inode->i_faddr, frag, fsize);
577 fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
578 time_to_string(inode->i_ctime));
579 fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
580 time_to_string(inode->i_atime));
581 fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
582 time_to_string(inode->i_mtime));
583 if (inode->i_dtime)
584 fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
585 time_to_string(inode->i_dtime));
586 if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
587 internal_dump_inode_extra(out, prefix, inode_num,
588 (struct ext2_inode_large *) inode);
589 if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
590 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
591 (int) inode->i_size, (char *)inode->i_block);
592 else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
593 int major, minor;
594 const char *devnote;
595
596 if (inode->i_block[0]) {
597 major = (inode->i_block[0] >> 8) & 255;
598 minor = inode->i_block[0] & 255;
599 devnote = "";
600 } else {
601 major = (inode->i_block[1] & 0xfff00) >> 8;
602 minor = ((inode->i_block[1] & 0xff) |
603 ((inode->i_block[1] >> 12) & 0xfff00));
604 devnote = "(New-style) ";
605 }
606 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
607 devnote, major, minor, major, minor);
608 }
609 else if (do_dump_blocks)
610 dump_blocks(out, prefix, inode_num);
611 }
612
613 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
614 {
615 FILE *out;
616
617 out = open_pager();
618 internal_dump_inode(out, "", inode_num, inode, 1);
619 close_pager(out);
620 }
621
622 void do_stat(int argc, char *argv[])
623 {
624 ext2_ino_t inode;
625 struct ext2_inode * inode_buf;
626
627 if (check_fs_open(argv[0]))
628 return;
629
630 inode_buf = (struct ext2_inode *)
631 malloc(EXT2_INODE_SIZE(current_fs->super));
632 if (!inode_buf) {
633 fprintf(stderr, "do_stat: can't allocate buffer\n");
634 return;
635 }
636
637 if (common_inode_args_process(argc, argv, &inode, 0)) {
638 free(inode_buf);
639 return;
640 }
641
642 if (debugfs_read_inode_full(inode, inode_buf, argv[0],
643 EXT2_INODE_SIZE(current_fs->super))) {
644 free(inode_buf);
645 return;
646 }
647
648 dump_inode(inode, inode_buf);
649 free(inode_buf);
650 return;
651 }
652
653 void do_chroot(int argc, char *argv[])
654 {
655 ext2_ino_t inode;
656 int retval;
657
658 if (common_inode_args_process(argc, argv, &inode, 0))
659 return;
660
661 retval = ext2fs_check_directory(current_fs, inode);
662 if (retval) {
663 com_err(argv[1], retval, 0);
664 return;
665 }
666 root = inode;
667 }
668
669 void do_clri(int argc, char *argv[])
670 {
671 ext2_ino_t inode;
672 struct ext2_inode inode_buf;
673
674 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
675 return;
676
677 if (debugfs_read_inode(inode, &inode_buf, argv[0]))
678 return;
679 memset(&inode_buf, 0, sizeof(inode_buf));
680 if (debugfs_write_inode(inode, &inode_buf, argv[0]))
681 return;
682 }
683
684 void do_freei(int argc, char *argv[])
685 {
686 ext2_ino_t inode;
687
688 if (common_inode_args_process(argc, argv, &inode,
689 CHECK_FS_RW | CHECK_FS_BITMAPS))
690 return;
691
692 if (!ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
693 com_err(argv[0], 0, "Warning: inode already clear");
694 ext2fs_unmark_inode_bitmap(current_fs->inode_map,inode);
695 ext2fs_mark_ib_dirty(current_fs);
696 }
697
698 void do_seti(int argc, char *argv[])
699 {
700 ext2_ino_t inode;
701
702 if (common_inode_args_process(argc, argv, &inode,
703 CHECK_FS_RW | CHECK_FS_BITMAPS))
704 return;
705
706 if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
707 com_err(argv[0], 0, "Warning: inode already set");
708 ext2fs_mark_inode_bitmap(current_fs->inode_map,inode);
709 ext2fs_mark_ib_dirty(current_fs);
710 }
711
712 void do_testi(int argc, char *argv[])
713 {
714 ext2_ino_t inode;
715
716 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
717 return;
718
719 if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
720 printf("Inode %u is marked in use\n", inode);
721 else
722 printf("Inode %u is not in use\n", inode);
723 }
724
725 void do_freeb(int argc, char *argv[])
726 {
727 blk_t block;
728 blk_t count = 1;
729
730 if (common_block_args_process(argc, argv, &block, &count))
731 return;
732 if (check_fs_read_write(argv[0]))
733 return;
734 while (count-- > 0) {
735 if (!ext2fs_test_block_bitmap(current_fs->block_map,block))
736 com_err(argv[0], 0, "Warning: block %u already clear",
737 block);
738 ext2fs_unmark_block_bitmap(current_fs->block_map,block);
739 block++;
740 }
741 ext2fs_mark_bb_dirty(current_fs);
742 }
743
744 void do_setb(int argc, char *argv[])
745 {
746 blk_t block;
747 blk_t count = 1;
748
749 if (common_block_args_process(argc, argv, &block, &count))
750 return;
751 if (check_fs_read_write(argv[0]))
752 return;
753 while (count-- > 0) {
754 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
755 com_err(argv[0], 0, "Warning: block %u already set",
756 block);
757 ext2fs_mark_block_bitmap(current_fs->block_map,block);
758 block++;
759 }
760 ext2fs_mark_bb_dirty(current_fs);
761 }
762
763 void do_testb(int argc, char *argv[])
764 {
765 blk_t block;
766 blk_t count = 1;
767
768 if (common_block_args_process(argc, argv, &block, &count))
769 return;
770 while (count-- > 0) {
771 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
772 printf("Block %u marked in use\n", block);
773 else
774 printf("Block %u not in use\n", block);
775 block++;
776 }
777 }
778
779 static void modify_u8(char *com, const char *prompt,
780 const char *format, __u8 *val)
781 {
782 char buf[200];
783 unsigned long v;
784 char *tmp;
785
786 sprintf(buf, format, *val);
787 printf("%30s [%s] ", prompt, buf);
788 if (!fgets(buf, sizeof(buf), stdin))
789 return;
790 if (buf[strlen (buf) - 1] == '\n')
791 buf[strlen (buf) - 1] = '\0';
792 if (!buf[0])
793 return;
794 v = strtoul(buf, &tmp, 0);
795 if (*tmp)
796 com_err(com, 0, "Bad value - %s", buf);
797 else
798 *val = v;
799 }
800
801 static void modify_u16(char *com, const char *prompt,
802 const char *format, __u16 *val)
803 {
804 char buf[200];
805 unsigned long v;
806 char *tmp;
807
808 sprintf(buf, format, *val);
809 printf("%30s [%s] ", prompt, buf);
810 if (!fgets(buf, sizeof(buf), stdin))
811 return;
812 if (buf[strlen (buf) - 1] == '\n')
813 buf[strlen (buf) - 1] = '\0';
814 if (!buf[0])
815 return;
816 v = strtoul(buf, &tmp, 0);
817 if (*tmp)
818 com_err(com, 0, "Bad value - %s", buf);
819 else
820 *val = v;
821 }
822
823 static void modify_u32(char *com, const char *prompt,
824 const char *format, __u32 *val)
825 {
826 char buf[200];
827 unsigned long v;
828 char *tmp;
829
830 sprintf(buf, format, *val);
831 printf("%30s [%s] ", prompt, buf);
832 if (!fgets(buf, sizeof(buf), stdin))
833 return;
834 if (buf[strlen (buf) - 1] == '\n')
835 buf[strlen (buf) - 1] = '\0';
836 if (!buf[0])
837 return;
838 v = strtoul(buf, &tmp, 0);
839 if (*tmp)
840 com_err(com, 0, "Bad value - %s", buf);
841 else
842 *val = v;
843 }
844
845
846 void do_modify_inode(int argc, char *argv[])
847 {
848 struct ext2_inode inode;
849 ext2_ino_t inode_num;
850 int i;
851 unsigned char *frag, *fsize;
852 char buf[80];
853 int os;
854 const char *hex_format = "0x%x";
855 const char *octal_format = "0%o";
856 const char *decimal_format = "%d";
857 const char *unsignedlong_format = "%lu";
858
859 if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
860 return;
861
862 os = current_fs->super->s_creator_os;
863
864 if (debugfs_read_inode(inode_num, &inode, argv[1]))
865 return;
866
867 modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
868 modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
869 modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
870 modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
871 modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
872 modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
873 modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
874 modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
875 modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
876 if (os == EXT2_OS_LINUX)
877 modify_u16(argv[0], "Block count high", unsignedlong_format,
878 &inode.osd2.linux2.l_i_blocks_hi);
879 modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
880 modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
881 modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
882 #if 0
883 modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
884 #endif
885 modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
886 if (LINUX_S_ISDIR(inode.i_mode))
887 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
888 else
889 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
890
891 if (os == EXT2_OS_HURD)
892 modify_u32(argv[0], "Translator Block",
893 decimal_format, &inode.osd1.hurd1.h_i_translator);
894
895 modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
896 switch (os) {
897 case EXT2_OS_HURD:
898 frag = &inode.osd2.hurd2.h_i_frag;
899 fsize = &inode.osd2.hurd2.h_i_fsize;
900 break;
901 default:
902 frag = fsize = 0;
903 }
904 if (frag)
905 modify_u8(argv[0], "Fragment number", decimal_format, frag);
906 if (fsize)
907 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
908
909 for (i=0; i < EXT2_NDIR_BLOCKS; i++) {
910 sprintf(buf, "Direct Block #%d", i);
911 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
912 }
913 modify_u32(argv[0], "Indirect Block", decimal_format,
914 &inode.i_block[EXT2_IND_BLOCK]);
915 modify_u32(argv[0], "Double Indirect Block", decimal_format,
916 &inode.i_block[EXT2_DIND_BLOCK]);
917 modify_u32(argv[0], "Triple Indirect Block", decimal_format,
918 &inode.i_block[EXT2_TIND_BLOCK]);
919 if (debugfs_write_inode(inode_num, &inode, argv[1]))
920 return;
921 }
922
923 void do_change_working_dir(int argc, char *argv[])
924 {
925 ext2_ino_t inode;
926 int retval;
927
928 if (common_inode_args_process(argc, argv, &inode, 0))
929 return;
930
931 retval = ext2fs_check_directory(current_fs, inode);
932 if (retval) {
933 com_err(argv[1], retval, 0);
934 return;
935 }
936 cwd = inode;
937 return;
938 }
939
940 void do_print_working_directory(int argc, char *argv[])
941 {
942 int retval;
943 char *pathname = NULL;
944
945 if (common_args_process(argc, argv, 1, 1,
946 "print_working_directory", "", 0))
947 return;
948
949 retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
950 if (retval) {
951 com_err(argv[0], retval,
952 "while trying to get pathname of cwd");
953 }
954 printf("[pwd] INODE: %6u PATH: %s\n",
955 cwd, pathname ? pathname : "NULL");
956 if (pathname) {
957 free(pathname);
958 pathname = NULL;
959 }
960 retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
961 if (retval) {
962 com_err(argv[0], retval,
963 "while trying to get pathname of root");
964 }
965 printf("[root] INODE: %6u PATH: %s\n",
966 root, pathname ? pathname : "NULL");
967 if (pathname) {
968 free(pathname);
969 pathname = NULL;
970 }
971 return;
972 }
973
974 /*
975 * Given a mode, return the ext2 file type
976 */
977 static int ext2_file_type(unsigned int mode)
978 {
979 if (LINUX_S_ISREG(mode))
980 return EXT2_FT_REG_FILE;
981
982 if (LINUX_S_ISDIR(mode))
983 return EXT2_FT_DIR;
984
985 if (LINUX_S_ISCHR(mode))
986 return EXT2_FT_CHRDEV;
987
988 if (LINUX_S_ISBLK(mode))
989 return EXT2_FT_BLKDEV;
990
991 if (LINUX_S_ISLNK(mode))
992 return EXT2_FT_SYMLINK;
993
994 if (LINUX_S_ISFIFO(mode))
995 return EXT2_FT_FIFO;
996
997 if (LINUX_S_ISSOCK(mode))
998 return EXT2_FT_SOCK;
999
1000 return 0;
1001 }
1002
1003 static void make_link(char *sourcename, char *destname)
1004 {
1005 ext2_ino_t ino;
1006 struct ext2_inode inode;
1007 int retval;
1008 ext2_ino_t dir;
1009 char *dest, *cp, *base_name;
1010
1011 /*
1012 * Get the source inode
1013 */
1014 ino = string_to_inode(sourcename);
1015 if (!ino)
1016 return;
1017 base_name = strrchr(sourcename, '/');
1018 if (base_name)
1019 base_name++;
1020 else
1021 base_name = sourcename;
1022 /*
1023 * Figure out the destination. First see if it exists and is
1024 * a directory.
1025 */
1026 if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1027 dest = base_name;
1028 else {
1029 /*
1030 * OK, it doesn't exist. See if it is
1031 * '<dir>/basename' or 'basename'
1032 */
1033 cp = strrchr(destname, '/');
1034 if (cp) {
1035 *cp = 0;
1036 dir = string_to_inode(destname);
1037 if (!dir)
1038 return;
1039 dest = cp+1;
1040 } else {
1041 dir = cwd;
1042 dest = destname;
1043 }
1044 }
1045
1046 if (debugfs_read_inode(ino, &inode, sourcename))
1047 return;
1048
1049 retval = ext2fs_link(current_fs, dir, dest, ino,
1050 ext2_file_type(inode.i_mode));
1051 if (retval)
1052 com_err("make_link", retval, 0);
1053 return;
1054 }
1055
1056
1057 void do_link(int argc, char *argv[])
1058 {
1059 if (common_args_process(argc, argv, 3, 3, "link",
1060 "<source file> <dest_name>", CHECK_FS_RW))
1061 return;
1062
1063 make_link(argv[1], argv[2]);
1064 }
1065
1066 static int mark_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1067 int blockcnt EXT2FS_ATTR((unused)),
1068 void *private EXT2FS_ATTR((unused)))
1069 {
1070 blk_t block;
1071
1072 block = *blocknr;
1073 ext2fs_block_alloc_stats(fs, block, +1);
1074 return 0;
1075 }
1076
1077 void do_undel(int argc, char *argv[])
1078 {
1079 ext2_ino_t ino;
1080 struct ext2_inode inode;
1081
1082 if (common_args_process(argc, argv, 3, 3, "undelete",
1083 "<inode_num> <dest_name>",
1084 CHECK_FS_RW | CHECK_FS_BITMAPS))
1085 return;
1086
1087 ino = string_to_inode(argv[1]);
1088 if (!ino)
1089 return;
1090
1091 if (debugfs_read_inode(ino, &inode, argv[1]))
1092 return;
1093
1094 if (ext2fs_test_inode_bitmap(current_fs->inode_map, ino)) {
1095 com_err(argv[1], 0, "Inode is not marked as deleted");
1096 return;
1097 }
1098
1099 /*
1100 * XXX this function doesn't handle changing the links count on the
1101 * parent directory when undeleting a directory.
1102 */
1103 inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1104 inode.i_dtime = 0;
1105
1106 if (debugfs_write_inode(ino, &inode, argv[0]))
1107 return;
1108
1109 ext2fs_block_iterate(current_fs, ino, 0, NULL,
1110 mark_blocks_proc, NULL);
1111
1112 ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1113
1114 make_link(argv[1], argv[2]);
1115 }
1116
1117 static void unlink_file_by_name(char *filename)
1118 {
1119 int retval;
1120 ext2_ino_t dir;
1121 char *base_name;
1122
1123 base_name = strrchr(filename, '/');
1124 if (base_name) {
1125 *base_name++ = '\0';
1126 dir = string_to_inode(filename);
1127 if (!dir)
1128 return;
1129 } else {
1130 dir = cwd;
1131 base_name = filename;
1132 }
1133 retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
1134 if (retval)
1135 com_err("unlink_file_by_name", retval, 0);
1136 return;
1137 }
1138
1139 void do_unlink(int argc, char *argv[])
1140 {
1141 if (common_args_process(argc, argv, 2, 2, "link",
1142 "<pathname>", CHECK_FS_RW))
1143 return;
1144
1145 unlink_file_by_name(argv[1]);
1146 }
1147
1148 void do_find_free_block(int argc, char *argv[])
1149 {
1150 blk_t free_blk, goal;
1151 int count;
1152 errcode_t retval;
1153 char *tmp;
1154
1155 if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1156 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1157 return;
1158 }
1159 if (check_fs_open(argv[0]))
1160 return;
1161
1162 if (argc > 1) {
1163 count = strtol(argv[1],&tmp,0);
1164 if (*tmp) {
1165 com_err(argv[0], 0, "Bad count - %s", argv[1]);
1166 return;
1167 }
1168 } else
1169 count = 1;
1170
1171 if (argc > 2) {
1172 goal = strtol(argv[2], &tmp, 0);
1173 if (*tmp) {
1174 com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1175 return;
1176 }
1177 }
1178 else
1179 goal = current_fs->super->s_first_data_block;
1180
1181 printf("Free blocks found: ");
1182 free_blk = goal - 1;
1183 while (count-- > 0) {
1184 retval = ext2fs_new_block(current_fs, free_blk + 1, 0,
1185 &free_blk);
1186 if (retval) {
1187 com_err("ext2fs_new_block", retval, 0);
1188 return;
1189 } else
1190 printf("%u ", free_blk);
1191 }
1192 printf("\n");
1193 }
1194
1195 void do_find_free_inode(int argc, char *argv[])
1196 {
1197 ext2_ino_t free_inode, dir;
1198 int mode;
1199 int retval;
1200 char *tmp;
1201
1202 if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1203 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1204 return;
1205 }
1206 if (check_fs_open(argv[0]))
1207 return;
1208
1209 if (argc > 1) {
1210 dir = strtol(argv[1], &tmp, 0);
1211 if (*tmp) {
1212 com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1213 return;
1214 }
1215 }
1216 else
1217 dir = root;
1218 if (argc > 2) {
1219 mode = strtol(argv[2], &tmp, 0);
1220 if (*tmp) {
1221 com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1222 return;
1223 }
1224 } else
1225 mode = 010755;
1226
1227 retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1228 if (retval)
1229 com_err("ext2fs_new_inode", retval, 0);
1230 else
1231 printf("Free inode found: %u\n", free_inode);
1232 }
1233
1234 static errcode_t copy_file(int fd, ext2_ino_t newfile)
1235 {
1236 ext2_file_t e2_file;
1237 errcode_t retval;
1238 int got;
1239 unsigned int written;
1240 char buf[8192];
1241 char *ptr;
1242
1243 retval = ext2fs_file_open(current_fs, newfile,
1244 EXT2_FILE_WRITE, &e2_file);
1245 if (retval)
1246 return retval;
1247
1248 while (1) {
1249 got = read(fd, buf, sizeof(buf));
1250 if (got == 0)
1251 break;
1252 if (got < 0) {
1253 retval = errno;
1254 goto fail;
1255 }
1256 ptr = buf;
1257 while (got > 0) {
1258 retval = ext2fs_file_write(e2_file, ptr,
1259 got, &written);
1260 if (retval)
1261 goto fail;
1262
1263 got -= written;
1264 ptr += written;
1265 }
1266 }
1267 retval = ext2fs_file_close(e2_file);
1268 return retval;
1269
1270 fail:
1271 (void) ext2fs_file_close(e2_file);
1272 return retval;
1273 }
1274
1275
1276 void do_write(int argc, char *argv[])
1277 {
1278 int fd;
1279 struct stat statbuf;
1280 ext2_ino_t newfile;
1281 errcode_t retval;
1282 struct ext2_inode inode;
1283
1284 if (common_args_process(argc, argv, 3, 3, "write",
1285 "<native file> <new file>", CHECK_FS_RW))
1286 return;
1287
1288 fd = open(argv[1], O_RDONLY);
1289 if (fd < 0) {
1290 com_err(argv[1], errno, 0);
1291 return;
1292 }
1293 if (fstat(fd, &statbuf) < 0) {
1294 com_err(argv[1], errno, 0);
1295 close(fd);
1296 return;
1297 }
1298
1299 retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1300 if (retval == 0) {
1301 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1302 close(fd);
1303 return;
1304 }
1305
1306 retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1307 if (retval) {
1308 com_err(argv[0], retval, 0);
1309 close(fd);
1310 return;
1311 }
1312 printf("Allocated inode: %u\n", newfile);
1313 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1314 EXT2_FT_REG_FILE);
1315 if (retval == EXT2_ET_DIR_NO_SPACE) {
1316 retval = ext2fs_expand_dir(current_fs, cwd);
1317 if (retval) {
1318 com_err(argv[0], retval, "while expanding directory");
1319 return;
1320 }
1321 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1322 EXT2_FT_REG_FILE);
1323 }
1324 if (retval) {
1325 com_err(argv[2], retval, 0);
1326 close(fd);
1327 return;
1328 }
1329 if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1330 com_err(argv[0], 0, "Warning: inode already set");
1331 ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1332 memset(&inode, 0, sizeof(inode));
1333 inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
1334 inode.i_atime = inode.i_ctime = inode.i_mtime =
1335 current_fs->now ? current_fs->now : time(0);
1336 inode.i_links_count = 1;
1337 inode.i_size = statbuf.st_size;
1338 if (debugfs_write_new_inode(newfile, &inode, argv[0])) {
1339 close(fd);
1340 return;
1341 }
1342 if (LINUX_S_ISREG(inode.i_mode)) {
1343 retval = copy_file(fd, newfile);
1344 if (retval)
1345 com_err("copy_file", retval, 0);
1346 }
1347 close(fd);
1348 }
1349
1350 void do_mknod(int argc, char *argv[])
1351 {
1352 unsigned long mode, major, minor;
1353 ext2_ino_t newfile;
1354 errcode_t retval;
1355 struct ext2_inode inode;
1356 int filetype, nr;
1357
1358 if (check_fs_open(argv[0]))
1359 return;
1360 if (argc < 3 || argv[2][1]) {
1361 usage:
1362 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1363 return;
1364 }
1365 mode = minor = major = 0;
1366 switch (argv[2][0]) {
1367 case 'p':
1368 mode = LINUX_S_IFIFO;
1369 filetype = EXT2_FT_FIFO;
1370 nr = 3;
1371 break;
1372 case 'c':
1373 mode = LINUX_S_IFCHR;
1374 filetype = EXT2_FT_CHRDEV;
1375 nr = 5;
1376 break;
1377 case 'b':
1378 mode = LINUX_S_IFBLK;
1379 filetype = EXT2_FT_BLKDEV;
1380 nr = 5;
1381 break;
1382 default:
1383 filetype = 0;
1384 nr = 0;
1385 }
1386 if (nr == 5) {
1387 major = strtoul(argv[3], argv+3, 0);
1388 minor = strtoul(argv[4], argv+4, 0);
1389 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1390 nr = 0;
1391 }
1392 if (argc != nr)
1393 goto usage;
1394 if (check_fs_read_write(argv[0]))
1395 return;
1396 retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1397 if (retval) {
1398 com_err(argv[0], retval, 0);
1399 return;
1400 }
1401 printf("Allocated inode: %u\n", newfile);
1402 retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1403 if (retval == EXT2_ET_DIR_NO_SPACE) {
1404 retval = ext2fs_expand_dir(current_fs, cwd);
1405 if (retval) {
1406 com_err(argv[0], retval, "while expanding directory");
1407 return;
1408 }
1409 retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
1410 filetype);
1411 }
1412 if (retval) {
1413 com_err(argv[1], retval, 0);
1414 return;
1415 }
1416 if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1417 com_err(argv[0], 0, "Warning: inode already set");
1418 ext2fs_mark_inode_bitmap(current_fs->inode_map, newfile);
1419 ext2fs_mark_ib_dirty(current_fs);
1420 memset(&inode, 0, sizeof(inode));
1421 inode.i_mode = mode;
1422 inode.i_atime = inode.i_ctime = inode.i_mtime =
1423 current_fs->now ? current_fs->now : time(0);
1424 if ((major < 256) && (minor < 256)) {
1425 inode.i_block[0] = major*256+minor;
1426 inode.i_block[1] = 0;
1427 } else {
1428 inode.i_block[0] = 0;
1429 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
1430 }
1431 inode.i_links_count = 1;
1432 if (debugfs_write_new_inode(newfile, &inode, argv[0]))
1433 return;
1434 }
1435
1436 void do_mkdir(int argc, char *argv[])
1437 {
1438 char *cp;
1439 ext2_ino_t parent;
1440 char *name;
1441 errcode_t retval;
1442
1443 if (common_args_process(argc, argv, 2, 2, "mkdir",
1444 "<filename>", CHECK_FS_RW))
1445 return;
1446
1447 cp = strrchr(argv[1], '/');
1448 if (cp) {
1449 *cp = 0;
1450 parent = string_to_inode(argv[1]);
1451 if (!parent) {
1452 com_err(argv[1], ENOENT, 0);
1453 return;
1454 }
1455 name = cp+1;
1456 } else {
1457 parent = cwd;
1458 name = argv[1];
1459 }
1460
1461 try_again:
1462 retval = ext2fs_mkdir(current_fs, parent, 0, name);
1463 if (retval == EXT2_ET_DIR_NO_SPACE) {
1464 retval = ext2fs_expand_dir(current_fs, parent);
1465 if (retval) {
1466 com_err("argv[0]", retval, "while expanding directory");
1467 return;
1468 }
1469 goto try_again;
1470 }
1471 if (retval) {
1472 com_err("ext2fs_mkdir", retval, 0);
1473 return;
1474 }
1475
1476 }
1477
1478 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1479 int blockcnt EXT2FS_ATTR((unused)),
1480 void *private EXT2FS_ATTR((unused)))
1481 {
1482 blk_t block;
1483
1484 block = *blocknr;
1485 ext2fs_block_alloc_stats(fs, block, -1);
1486 return 0;
1487 }
1488
1489 static void kill_file_by_inode(ext2_ino_t inode)
1490 {
1491 struct ext2_inode inode_buf;
1492
1493 if (debugfs_read_inode(inode, &inode_buf, 0))
1494 return;
1495 inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1496 if (debugfs_write_inode(inode, &inode_buf, 0))
1497 return;
1498 if (!ext2fs_inode_has_valid_blocks(&inode_buf))
1499 return;
1500
1501 ext2fs_block_iterate(current_fs, inode, 0, NULL,
1502 release_blocks_proc, NULL);
1503 printf("\n");
1504 ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1505 LINUX_S_ISDIR(inode_buf.i_mode));
1506 }
1507
1508
1509 void do_kill_file(int argc, char *argv[])
1510 {
1511 ext2_ino_t inode_num;
1512
1513 if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1514 return;
1515
1516 kill_file_by_inode(inode_num);
1517 }
1518
1519 void do_rm(int argc, char *argv[])
1520 {
1521 int retval;
1522 ext2_ino_t inode_num;
1523 struct ext2_inode inode;
1524
1525 if (common_args_process(argc, argv, 2, 2, "rm",
1526 "<filename>", CHECK_FS_RW))
1527 return;
1528
1529 retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1530 if (retval) {
1531 com_err(argv[0], retval, "while trying to resolve filename");
1532 return;
1533 }
1534
1535 if (debugfs_read_inode(inode_num, &inode, argv[0]))
1536 return;
1537
1538 if (LINUX_S_ISDIR(inode.i_mode)) {
1539 com_err(argv[0], 0, "file is a directory");
1540 return;
1541 }
1542
1543 --inode.i_links_count;
1544 if (debugfs_write_inode(inode_num, &inode, argv[0]))
1545 return;
1546
1547 unlink_file_by_name(argv[1]);
1548 if (inode.i_links_count == 0)
1549 kill_file_by_inode(inode_num);
1550 }
1551
1552 struct rd_struct {
1553 ext2_ino_t parent;
1554 int empty;
1555 };
1556
1557 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1558 int entry EXT2FS_ATTR((unused)),
1559 struct ext2_dir_entry *dirent,
1560 int offset EXT2FS_ATTR((unused)),
1561 int blocksize EXT2FS_ATTR((unused)),
1562 char *buf EXT2FS_ATTR((unused)),
1563 void *private)
1564 {
1565 struct rd_struct *rds = (struct rd_struct *) private;
1566
1567 if (dirent->inode == 0)
1568 return 0;
1569 if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1570 return 0;
1571 if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1572 (dirent->name[1] == '.')) {
1573 rds->parent = dirent->inode;
1574 return 0;
1575 }
1576 rds->empty = 0;
1577 return 0;
1578 }
1579
1580 void do_rmdir(int argc, char *argv[])
1581 {
1582 int retval;
1583 ext2_ino_t inode_num;
1584 struct ext2_inode inode;
1585 struct rd_struct rds;
1586
1587 if (common_args_process(argc, argv, 2, 2, "rmdir",
1588 "<filename>", CHECK_FS_RW))
1589 return;
1590
1591 retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1592 if (retval) {
1593 com_err(argv[0], retval, "while trying to resolve filename");
1594 return;
1595 }
1596
1597 if (debugfs_read_inode(inode_num, &inode, argv[0]))
1598 return;
1599
1600 if (!LINUX_S_ISDIR(inode.i_mode)) {
1601 com_err(argv[0], 0, "file is not a directory");
1602 return;
1603 }
1604
1605 rds.parent = 0;
1606 rds.empty = 1;
1607
1608 retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1609 0, rmdir_proc, &rds);
1610 if (retval) {
1611 com_err(argv[0], retval, "while iterating over directory");
1612 return;
1613 }
1614 if (rds.empty == 0) {
1615 com_err(argv[0], 0, "directory not empty");
1616 return;
1617 }
1618
1619 inode.i_links_count = 0;
1620 if (debugfs_write_inode(inode_num, &inode, argv[0]))
1621 return;
1622
1623 unlink_file_by_name(argv[1]);
1624 kill_file_by_inode(inode_num);
1625
1626 if (rds.parent) {
1627 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1628 return;
1629 if (inode.i_links_count > 1)
1630 inode.i_links_count--;
1631 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1632 return;
1633 }
1634 }
1635
1636 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1637 char *argv[] EXT2FS_ATTR((unused)))
1638 {
1639 FILE *out = stdout;
1640
1641 if (current_fs)
1642 fprintf(out, "Open mode: read-%s\n",
1643 current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1644 fprintf(out, "Filesystem in use: %s\n",
1645 current_fs ? current_fs->device_name : "--none--");
1646 }
1647
1648 void do_expand_dir(int argc, char *argv[])
1649 {
1650 ext2_ino_t inode;
1651 int retval;
1652
1653 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1654 return;
1655
1656 retval = ext2fs_expand_dir(current_fs, inode);
1657 if (retval)
1658 com_err("ext2fs_expand_dir", retval, 0);
1659 return;
1660 }
1661
1662 void do_features(int argc, char *argv[])
1663 {
1664 int i;
1665
1666 if (check_fs_open(argv[0]))
1667 return;
1668
1669 if ((argc != 1) && check_fs_read_write(argv[0]))
1670 return;
1671 for (i=1; i < argc; i++) {
1672 if (e2p_edit_feature(argv[i],
1673 &current_fs->super->s_feature_compat, 0))
1674 com_err(argv[0], 0, "Unknown feature: %s\n",
1675 argv[i]);
1676 else
1677 ext2fs_mark_super_dirty(current_fs);
1678 }
1679 print_features(current_fs->super, stdout);
1680 }
1681
1682 void do_bmap(int argc, char *argv[])
1683 {
1684 ext2_ino_t ino;
1685 blk_t blk, pblk;
1686 int err;
1687 errcode_t errcode;
1688
1689 if (common_args_process(argc, argv, 3, 3, argv[0],
1690 "<file> logical_blk", 0))
1691 return;
1692
1693 ino = string_to_inode(argv[1]);
1694 if (!ino)
1695 return;
1696 blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
1697
1698 errcode = ext2fs_bmap(current_fs, ino, 0, 0, 0, blk, &pblk);
1699 if (errcode) {
1700 com_err("argv[0]", errcode,
1701 "while mapping logical block %u\n", blk);
1702 return;
1703 }
1704 printf("%u\n", pblk);
1705 }
1706
1707 void do_imap(int argc, char *argv[])
1708 {
1709 ext2_ino_t ino;
1710 unsigned long group, block, block_nr, offset;
1711
1712 if (common_args_process(argc, argv, 2, 2, argv[0],
1713 "<file>", 0))
1714 return;
1715 ino = string_to_inode(argv[1]);
1716 if (!ino)
1717 return;
1718
1719 group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
1720 offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
1721 EXT2_INODE_SIZE(current_fs->super);
1722 block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
1723 if (!current_fs->group_desc[(unsigned)group].bg_inode_table) {
1724 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
1725 group);
1726 return;
1727 }
1728 block_nr = current_fs->group_desc[(unsigned)group].bg_inode_table +
1729 block;
1730 offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
1731
1732 printf("Inode %d is part of block group %lu\n"
1733 "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
1734 block_nr, offset);
1735
1736 }
1737
1738 void do_set_current_time(int argc, char *argv[])
1739 {
1740 time_t now;
1741
1742 if (common_args_process(argc, argv, 2, 2, argv[0],
1743 "<time>", 0))
1744 return;
1745
1746 now = string_to_time(argv[1]);
1747 if (now == ((time_t) -1)) {
1748 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
1749 argv[1]);
1750 return;
1751
1752 } else {
1753 printf("Setting current time to %s\n", time_to_string(now));
1754 current_fs->now = now;
1755 }
1756 }
1757
1758 static int source_file(const char *cmd_file, int sci_idx)
1759 {
1760 FILE *f;
1761 char buf[256];
1762 char *cp;
1763 int exit_status = 0;
1764 int retval;
1765
1766 if (strcmp(cmd_file, "-") == 0)
1767 f = stdin;
1768 else {
1769 f = fopen(cmd_file, "r");
1770 if (!f) {
1771 perror(cmd_file);
1772 exit(1);
1773 }
1774 }
1775 setbuf(stdout, NULL);
1776 setbuf(stderr, NULL);
1777 while (!feof(f)) {
1778 if (fgets(buf, sizeof(buf), f) == NULL)
1779 break;
1780 cp = strchr(buf, '\n');
1781 if (cp)
1782 *cp = 0;
1783 cp = strchr(buf, '\r');
1784 if (cp)
1785 *cp = 0;
1786 printf("debugfs: %s\n", buf);
1787 retval = ss_execute_line(sci_idx, buf);
1788 if (retval) {
1789 ss_perror(sci_idx, retval, buf);
1790 exit_status++;
1791 }
1792 }
1793 return exit_status;
1794 }
1795
1796 int main(int argc, char **argv)
1797 {
1798 int retval;
1799 int sci_idx;
1800 const char *usage = "Usage: debugfs [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]";
1801 int c;
1802 int open_flags = EXT2_FLAG_SOFTSUPP_FEATURES;
1803 char *request = 0;
1804 int exit_status = 0;
1805 char *cmd_file = 0;
1806 blk_t superblock = 0;
1807 blk_t blocksize = 0;
1808 int catastrophic = 0;
1809 char *data_filename = 0;
1810
1811 add_error_table(&et_ext2_error_table);
1812 fprintf (stderr, "debugfs %s (%s)\n", E2FSPROGS_VERSION,
1813 E2FSPROGS_DATE);
1814
1815 while ((c = getopt (argc, argv, "iwcR:f:b:s:Vd:")) != EOF) {
1816 switch (c) {
1817 case 'R':
1818 request = optarg;
1819 break;
1820 case 'f':
1821 cmd_file = optarg;
1822 break;
1823 case 'd':
1824 data_filename = optarg;
1825 break;
1826 case 'i':
1827 open_flags |= EXT2_FLAG_IMAGE_FILE;
1828 break;
1829 case 'w':
1830 open_flags |= EXT2_FLAG_RW;
1831 break;
1832 case 'b':
1833 blocksize = parse_ulong(optarg, argv[0],
1834 "block size", 0);
1835 break;
1836 case 's':
1837 superblock = parse_ulong(optarg, argv[0],
1838 "superblock number", 0);
1839 break;
1840 case 'c':
1841 catastrophic = 1;
1842 break;
1843 case 'V':
1844 /* Print version number and exit */
1845 fprintf(stderr, "\tUsing %s\n",
1846 error_message(EXT2_ET_BASE));
1847 exit(0);
1848 default:
1849 com_err(argv[0], 0, usage);
1850 return 1;
1851 }
1852 }
1853 if (optind < argc)
1854 open_filesystem(argv[optind], open_flags,
1855 superblock, blocksize, catastrophic,
1856 data_filename);
1857
1858 sci_idx = ss_create_invocation("debugfs", "0.0", (char *) NULL,
1859 &debug_cmds, &retval);
1860 if (retval) {
1861 ss_perror(sci_idx, retval, "creating invocation");
1862 exit(1);
1863 }
1864 ss_get_readline(sci_idx);
1865
1866 (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
1867 if (retval) {
1868 ss_perror(sci_idx, retval, "adding standard requests");
1869 exit (1);
1870 }
1871 if (request) {
1872 retval = 0;
1873 retval = ss_execute_line(sci_idx, request);
1874 if (retval) {
1875 ss_perror(sci_idx, retval, request);
1876 exit_status++;
1877 }
1878 } else if (cmd_file) {
1879 exit_status = source_file(cmd_file, sci_idx);
1880 } else {
1881 ss_listen(sci_idx);
1882 }
1883
1884 if (current_fs)
1885 close_filesystem();
1886
1887 remove_error_table(&et_ext2_error_table);
1888 return exit_status;
1889 }
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