]> 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
Fix mke2fs and debugfs to support large (> 16 bit) uid's and gid's
[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", lb->first_bcnt, lb->first_block);
382 else
383 fprintf(lb->f, "(%lld-%lld):%u-%u", lb->first_bcnt,
384 lb->last_bcnt, lb->first_block, lb->last_block);
385 lb->first_block = 0;
386 }
387
388 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
389 blk_t *blocknr, e2_blkcnt_t blockcnt,
390 blk_t ref_block EXT2FS_ATTR((unused)),
391 int ref_offset EXT2FS_ATTR((unused)),
392 void *private)
393 {
394 struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
395
396 lb->total++;
397 if (blockcnt >= 0) {
398 /*
399 * See if we can add on to the existing range (if it exists)
400 */
401 if (lb->first_block &&
402 (lb->last_block+1 == *blocknr) &&
403 (lb->last_bcnt+1 == blockcnt)) {
404 lb->last_block = *blocknr;
405 lb->last_bcnt = blockcnt;
406 return 0;
407 }
408 /*
409 * Start a new range.
410 */
411 finish_range(lb);
412 lb->first_block = lb->last_block = *blocknr;
413 lb->first_bcnt = lb->last_bcnt = blockcnt;
414 return 0;
415 }
416 /*
417 * Not a normal block. Always force a new range.
418 */
419 finish_range(lb);
420 if (lb->first)
421 lb->first = 0;
422 else
423 fprintf(lb->f, ", ");
424 if (blockcnt == -1)
425 fprintf(lb->f, "(IND):%u", *blocknr);
426 else if (blockcnt == -2)
427 fprintf(lb->f, "(DIND):%u", *blocknr);
428 else if (blockcnt == -3)
429 fprintf(lb->f, "(TIND):%u", *blocknr);
430 return 0;
431 }
432
433 static void dump_xattr_string(FILE *out, const char *str, int len)
434 {
435 int printable = 1;
436 int i;
437
438 /* check is string printable? */
439 for (i = 0; i < len; i++)
440 if (!isprint(str[i])) {
441 printable = 0;
442 break;
443 }
444
445 for (i = 0; i < len; i++)
446 if (printable)
447 fprintf(out, "%c", (unsigned char)str[i]);
448 else
449 fprintf(out, "%02x ", (unsigned char)str[i]);
450 }
451
452 static void internal_dump_inode_extra(FILE *out, const char *prefix,
453 ext2_ino_t inode_num,
454 struct ext2_inode_large *inode)
455 {
456 struct ext2_ext_attr_entry *entry;
457 __u32 *magic;
458 char *start, *end;
459 unsigned int storage_size;
460
461 fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
462 if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
463 EXT2_GOOD_OLD_INODE_SIZE) {
464 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
465 inode->i_extra_isize);
466 return;
467 }
468 storage_size = EXT2_INODE_SIZE(current_fs->super) -
469 EXT2_GOOD_OLD_INODE_SIZE -
470 inode->i_extra_isize;
471 magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
472 inode->i_extra_isize);
473 if (*magic == EXT2_EXT_ATTR_MAGIC) {
474 fprintf(out, "Extended attributes stored in inode body: \n");
475 end = (char *) inode + EXT2_INODE_SIZE(current_fs->super);
476 start = (char *) magic + sizeof(__u32);
477 entry = (struct ext2_ext_attr_entry *) start;
478 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
479 struct ext2_ext_attr_entry *next =
480 EXT2_EXT_ATTR_NEXT(entry);
481 if (entry->e_value_size > storage_size ||
482 (char *) next >= end) {
483 fprintf(out, "invalid EA entry in inode\n");
484 return;
485 }
486 fprintf(out, " ");
487 dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry),
488 entry->e_name_len);
489 fprintf(out, " = \"");
490 dump_xattr_string(out, start + entry->e_value_offs,
491 entry->e_value_size);
492 fprintf(out, "\" (%u)\n", entry->e_value_size);
493 entry = next;
494 }
495 }
496 }
497
498 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
499 {
500 struct list_blocks_struct lb;
501
502 fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
503 lb.total = 0;
504 lb.first_block = 0;
505 lb.f = f;
506 lb.first = 1;
507 ext2fs_block_iterate2(current_fs, inode, 0, NULL,
508 list_blocks_proc, (void *)&lb);
509 finish_range(&lb);
510 if (lb.total)
511 fprintf(f, "\n%sTOTAL: %lld\n", prefix, lb.total);
512 fprintf(f,"\n");
513 }
514
515
516 void internal_dump_inode(FILE *out, const char *prefix,
517 ext2_ino_t inode_num, struct ext2_inode *inode,
518 int do_dump_blocks)
519 {
520 const char *i_type;
521 char frag, fsize;
522 int os = current_fs->super->s_creator_os;
523
524 if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
525 else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
526 else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
527 else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
528 else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
529 else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
530 else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
531 else i_type = "bad type";
532 fprintf(out, "%sInode: %u Type: %s ", prefix, inode_num, i_type);
533 fprintf(out, "%sMode: %04o Flags: 0x%x Generation: %u\n",
534 prefix,
535 inode->i_mode & 0777, inode->i_flags, inode->i_generation);
536 fprintf(out, "%sUser: %5d Group: %5d Size: ",
537 prefix, inode_uid(*inode), inode_gid(*inode));
538 if (LINUX_S_ISREG(inode->i_mode)) {
539 __u64 i_size = (inode->i_size |
540 ((unsigned long long)inode->i_size_high << 32));
541
542 fprintf(out, "%lld\n", i_size);
543 } else
544 fprintf(out, "%d\n", inode->i_size);
545 if (os == EXT2_OS_HURD)
546 fprintf(out,
547 "%sFile ACL: %d Directory ACL: %d Translator: %d\n",
548 prefix,
549 inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
550 inode->osd1.hurd1.h_i_translator);
551 else
552 fprintf(out, "%sFile ACL: %d Directory ACL: %d\n",
553 prefix,
554 inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
555 if (os == EXT2_OS_LINUX)
556 fprintf(out, "%sLinks: %d Blockcount: %llu\n",
557 prefix, inode->i_links_count,
558 (((unsigned long long)
559 inode->osd2.linux2.l_i_blocks_hi << 32)) +
560 inode->i_blocks);
561 else
562 fprintf(out, "%sLinks: %d Blockcount: %u\n",
563 prefix, inode->i_links_count, inode->i_blocks);
564 switch (os) {
565 case EXT2_OS_HURD:
566 frag = inode->osd2.hurd2.h_i_frag;
567 fsize = inode->osd2.hurd2.h_i_fsize;
568 break;
569 case EXT2_OS_MASIX:
570 frag = inode->osd2.masix2.m_i_frag;
571 fsize = inode->osd2.masix2.m_i_fsize;
572 break;
573 default:
574 frag = fsize = 0;
575 }
576 fprintf(out, "%sFragment: Address: %d Number: %d Size: %d\n",
577 prefix, inode->i_faddr, frag, fsize);
578 fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
579 time_to_string(inode->i_ctime));
580 fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
581 time_to_string(inode->i_atime));
582 fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
583 time_to_string(inode->i_mtime));
584 if (inode->i_dtime)
585 fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
586 time_to_string(inode->i_dtime));
587 if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
588 internal_dump_inode_extra(out, prefix, inode_num,
589 (struct ext2_inode_large *) inode);
590 if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
591 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
592 (int) inode->i_size, (char *)inode->i_block);
593 else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
594 int major, minor;
595 const char *devnote;
596
597 if (inode->i_block[0]) {
598 major = (inode->i_block[0] >> 8) & 255;
599 minor = inode->i_block[0] & 255;
600 devnote = "";
601 } else {
602 major = (inode->i_block[1] & 0xfff00) >> 8;
603 minor = ((inode->i_block[1] & 0xff) |
604 ((inode->i_block[1] >> 12) & 0xfff00));
605 devnote = "(New-style) ";
606 }
607 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
608 devnote, major, minor, major, minor);
609 }
610 else if (do_dump_blocks)
611 dump_blocks(out, prefix, inode_num);
612 }
613
614 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
615 {
616 FILE *out;
617
618 out = open_pager();
619 internal_dump_inode(out, "", inode_num, inode, 1);
620 close_pager(out);
621 }
622
623 void do_stat(int argc, char *argv[])
624 {
625 ext2_ino_t inode;
626 struct ext2_inode * inode_buf;
627
628 if (check_fs_open(argv[0]))
629 return;
630
631 inode_buf = (struct ext2_inode *)
632 malloc(EXT2_INODE_SIZE(current_fs->super));
633 if (!inode_buf) {
634 fprintf(stderr, "do_stat: can't allocate buffer\n");
635 return;
636 }
637
638 if (common_inode_args_process(argc, argv, &inode, 0)) {
639 free(inode_buf);
640 return;
641 }
642
643 if (debugfs_read_inode_full(inode, inode_buf, argv[0],
644 EXT2_INODE_SIZE(current_fs->super))) {
645 free(inode_buf);
646 return;
647 }
648
649 dump_inode(inode, inode_buf);
650 free(inode_buf);
651 return;
652 }
653
654 void do_chroot(int argc, char *argv[])
655 {
656 ext2_ino_t inode;
657 int retval;
658
659 if (common_inode_args_process(argc, argv, &inode, 0))
660 return;
661
662 retval = ext2fs_check_directory(current_fs, inode);
663 if (retval) {
664 com_err(argv[1], retval, 0);
665 return;
666 }
667 root = inode;
668 }
669
670 void do_clri(int argc, char *argv[])
671 {
672 ext2_ino_t inode;
673 struct ext2_inode inode_buf;
674
675 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
676 return;
677
678 if (debugfs_read_inode(inode, &inode_buf, argv[0]))
679 return;
680 memset(&inode_buf, 0, sizeof(inode_buf));
681 if (debugfs_write_inode(inode, &inode_buf, argv[0]))
682 return;
683 }
684
685 void do_freei(int argc, char *argv[])
686 {
687 ext2_ino_t inode;
688
689 if (common_inode_args_process(argc, argv, &inode,
690 CHECK_FS_RW | CHECK_FS_BITMAPS))
691 return;
692
693 if (!ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
694 com_err(argv[0], 0, "Warning: inode already clear");
695 ext2fs_unmark_inode_bitmap(current_fs->inode_map,inode);
696 ext2fs_mark_ib_dirty(current_fs);
697 }
698
699 void do_seti(int argc, char *argv[])
700 {
701 ext2_ino_t inode;
702
703 if (common_inode_args_process(argc, argv, &inode,
704 CHECK_FS_RW | CHECK_FS_BITMAPS))
705 return;
706
707 if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
708 com_err(argv[0], 0, "Warning: inode already set");
709 ext2fs_mark_inode_bitmap(current_fs->inode_map,inode);
710 ext2fs_mark_ib_dirty(current_fs);
711 }
712
713 void do_testi(int argc, char *argv[])
714 {
715 ext2_ino_t inode;
716
717 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
718 return;
719
720 if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
721 printf("Inode %u is marked in use\n", inode);
722 else
723 printf("Inode %u is not in use\n", inode);
724 }
725
726 void do_freeb(int argc, char *argv[])
727 {
728 blk_t block;
729 blk_t count = 1;
730
731 if (common_block_args_process(argc, argv, &block, &count))
732 return;
733 if (check_fs_read_write(argv[0]))
734 return;
735 while (count-- > 0) {
736 if (!ext2fs_test_block_bitmap(current_fs->block_map,block))
737 com_err(argv[0], 0, "Warning: block %u already clear",
738 block);
739 ext2fs_unmark_block_bitmap(current_fs->block_map,block);
740 block++;
741 }
742 ext2fs_mark_bb_dirty(current_fs);
743 }
744
745 void do_setb(int argc, char *argv[])
746 {
747 blk_t block;
748 blk_t count = 1;
749
750 if (common_block_args_process(argc, argv, &block, &count))
751 return;
752 if (check_fs_read_write(argv[0]))
753 return;
754 while (count-- > 0) {
755 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
756 com_err(argv[0], 0, "Warning: block %u already set",
757 block);
758 ext2fs_mark_block_bitmap(current_fs->block_map,block);
759 block++;
760 }
761 ext2fs_mark_bb_dirty(current_fs);
762 }
763
764 void do_testb(int argc, char *argv[])
765 {
766 blk_t block;
767 blk_t count = 1;
768
769 if (common_block_args_process(argc, argv, &block, &count))
770 return;
771 while (count-- > 0) {
772 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
773 printf("Block %u marked in use\n", block);
774 else
775 printf("Block %u not in use\n", block);
776 block++;
777 }
778 }
779
780 static void modify_u8(char *com, const char *prompt,
781 const char *format, __u8 *val)
782 {
783 char buf[200];
784 unsigned long v;
785 char *tmp;
786
787 sprintf(buf, format, *val);
788 printf("%30s [%s] ", prompt, buf);
789 fgets(buf, sizeof(buf), stdin);
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 fgets(buf, sizeof(buf), stdin);
811 if (buf[strlen (buf) - 1] == '\n')
812 buf[strlen (buf) - 1] = '\0';
813 if (!buf[0])
814 return;
815 v = strtoul(buf, &tmp, 0);
816 if (*tmp)
817 com_err(com, 0, "Bad value - %s", buf);
818 else
819 *val = v;
820 }
821
822 static void modify_u32(char *com, const char *prompt,
823 const char *format, __u32 *val)
824 {
825 char buf[200];
826 unsigned long v;
827 char *tmp;
828
829 sprintf(buf, format, *val);
830 printf("%30s [%s] ", prompt, buf);
831 fgets(buf, sizeof(buf), stdin);
832 if (buf[strlen (buf) - 1] == '\n')
833 buf[strlen (buf) - 1] = '\0';
834 if (!buf[0])
835 return;
836 v = strtoul(buf, &tmp, 0);
837 if (*tmp)
838 com_err(com, 0, "Bad value - %s", buf);
839 else
840 *val = v;
841 }
842
843
844 void do_modify_inode(int argc, char *argv[])
845 {
846 struct ext2_inode inode;
847 ext2_ino_t inode_num;
848 int i;
849 unsigned char *frag, *fsize;
850 char buf[80];
851 int os;
852 const char *hex_format = "0x%x";
853 const char *octal_format = "0%o";
854 const char *decimal_format = "%d";
855 const char *unsignedlong_format = "%lu";
856
857 if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
858 return;
859
860 os = current_fs->super->s_creator_os;
861
862 if (debugfs_read_inode(inode_num, &inode, argv[1]))
863 return;
864
865 modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
866 modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
867 modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
868 modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
869 modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
870 modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
871 modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
872 modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
873 modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
874 if (os == EXT2_OS_LINUX)
875 modify_u16(argv[0], "Block count high", unsignedlong_format,
876 &inode.osd2.linux2.l_i_blocks_hi);
877 modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
878 modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
879 modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
880 #if 0
881 modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
882 #endif
883 modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
884 if (LINUX_S_ISDIR(inode.i_mode))
885 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
886 else
887 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
888
889 if (os == EXT2_OS_HURD)
890 modify_u32(argv[0], "Translator Block",
891 decimal_format, &inode.osd1.hurd1.h_i_translator);
892
893 modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
894 switch (os) {
895 case EXT2_OS_HURD:
896 frag = &inode.osd2.hurd2.h_i_frag;
897 fsize = &inode.osd2.hurd2.h_i_fsize;
898 break;
899 case EXT2_OS_MASIX:
900 frag = &inode.osd2.masix2.m_i_frag;
901 fsize = &inode.osd2.masix2.m_i_fsize;
902 break;
903 default:
904 frag = fsize = 0;
905 }
906 if (frag)
907 modify_u8(argv[0], "Fragment number", decimal_format, frag);
908 if (fsize)
909 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
910
911 for (i=0; i < EXT2_NDIR_BLOCKS; i++) {
912 sprintf(buf, "Direct Block #%d", i);
913 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
914 }
915 modify_u32(argv[0], "Indirect Block", decimal_format,
916 &inode.i_block[EXT2_IND_BLOCK]);
917 modify_u32(argv[0], "Double Indirect Block", decimal_format,
918 &inode.i_block[EXT2_DIND_BLOCK]);
919 modify_u32(argv[0], "Triple Indirect Block", decimal_format,
920 &inode.i_block[EXT2_TIND_BLOCK]);
921 if (debugfs_write_inode(inode_num, &inode, argv[1]))
922 return;
923 }
924
925 void do_change_working_dir(int argc, char *argv[])
926 {
927 ext2_ino_t inode;
928 int retval;
929
930 if (common_inode_args_process(argc, argv, &inode, 0))
931 return;
932
933 retval = ext2fs_check_directory(current_fs, inode);
934 if (retval) {
935 com_err(argv[1], retval, 0);
936 return;
937 }
938 cwd = inode;
939 return;
940 }
941
942 void do_print_working_directory(int argc, char *argv[])
943 {
944 int retval;
945 char *pathname = NULL;
946
947 if (common_args_process(argc, argv, 1, 1,
948 "print_working_directory", "", 0))
949 return;
950
951 retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
952 if (retval) {
953 com_err(argv[0], retval,
954 "while trying to get pathname of cwd");
955 }
956 printf("[pwd] INODE: %6u PATH: %s\n",
957 cwd, pathname ? pathname : "NULL");
958 if (pathname) {
959 free(pathname);
960 pathname = NULL;
961 }
962 retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
963 if (retval) {
964 com_err(argv[0], retval,
965 "while trying to get pathname of root");
966 }
967 printf("[root] INODE: %6u PATH: %s\n",
968 root, pathname ? pathname : "NULL");
969 if (pathname) {
970 free(pathname);
971 pathname = NULL;
972 }
973 return;
974 }
975
976 /*
977 * Given a mode, return the ext2 file type
978 */
979 static int ext2_file_type(unsigned int mode)
980 {
981 if (LINUX_S_ISREG(mode))
982 return EXT2_FT_REG_FILE;
983
984 if (LINUX_S_ISDIR(mode))
985 return EXT2_FT_DIR;
986
987 if (LINUX_S_ISCHR(mode))
988 return EXT2_FT_CHRDEV;
989
990 if (LINUX_S_ISBLK(mode))
991 return EXT2_FT_BLKDEV;
992
993 if (LINUX_S_ISLNK(mode))
994 return EXT2_FT_SYMLINK;
995
996 if (LINUX_S_ISFIFO(mode))
997 return EXT2_FT_FIFO;
998
999 if (LINUX_S_ISSOCK(mode))
1000 return EXT2_FT_SOCK;
1001
1002 return 0;
1003 }
1004
1005 static void make_link(char *sourcename, char *destname)
1006 {
1007 ext2_ino_t ino;
1008 struct ext2_inode inode;
1009 int retval;
1010 ext2_ino_t dir;
1011 char *dest, *cp, *basename;
1012
1013 /*
1014 * Get the source inode
1015 */
1016 ino = string_to_inode(sourcename);
1017 if (!ino)
1018 return;
1019 basename = strrchr(sourcename, '/');
1020 if (basename)
1021 basename++;
1022 else
1023 basename = sourcename;
1024 /*
1025 * Figure out the destination. First see if it exists and is
1026 * a directory.
1027 */
1028 if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1029 dest = basename;
1030 else {
1031 /*
1032 * OK, it doesn't exist. See if it is
1033 * '<dir>/basename' or 'basename'
1034 */
1035 cp = strrchr(destname, '/');
1036 if (cp) {
1037 *cp = 0;
1038 dir = string_to_inode(destname);
1039 if (!dir)
1040 return;
1041 dest = cp+1;
1042 } else {
1043 dir = cwd;
1044 dest = destname;
1045 }
1046 }
1047
1048 if (debugfs_read_inode(ino, &inode, sourcename))
1049 return;
1050
1051 retval = ext2fs_link(current_fs, dir, dest, ino,
1052 ext2_file_type(inode.i_mode));
1053 if (retval)
1054 com_err("make_link", retval, 0);
1055 return;
1056 }
1057
1058
1059 void do_link(int argc, char *argv[])
1060 {
1061 if (common_args_process(argc, argv, 3, 3, "link",
1062 "<source file> <dest_name>", CHECK_FS_RW))
1063 return;
1064
1065 make_link(argv[1], argv[2]);
1066 }
1067
1068 static int mark_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1069 int blockcnt EXT2FS_ATTR((unused)),
1070 void *private EXT2FS_ATTR((unused)))
1071 {
1072 blk_t block;
1073
1074 block = *blocknr;
1075 ext2fs_block_alloc_stats(fs, block, +1);
1076 return 0;
1077 }
1078
1079 void do_undel(int argc, char *argv[])
1080 {
1081 ext2_ino_t ino;
1082 struct ext2_inode inode;
1083
1084 if (common_args_process(argc, argv, 3, 3, "undelete",
1085 "<inode_num> <dest_name>",
1086 CHECK_FS_RW | CHECK_FS_BITMAPS))
1087 return;
1088
1089 ino = string_to_inode(argv[1]);
1090 if (!ino)
1091 return;
1092
1093 if (debugfs_read_inode(ino, &inode, argv[1]))
1094 return;
1095
1096 if (ext2fs_test_inode_bitmap(current_fs->inode_map, ino)) {
1097 com_err(argv[1], 0, "Inode is not marked as deleted");
1098 return;
1099 }
1100
1101 /*
1102 * XXX this function doesn't handle changing the links count on the
1103 * parent directory when undeleting a directory.
1104 */
1105 inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1106 inode.i_dtime = 0;
1107
1108 if (debugfs_write_inode(ino, &inode, argv[0]))
1109 return;
1110
1111 ext2fs_block_iterate(current_fs, ino, 0, NULL,
1112 mark_blocks_proc, NULL);
1113
1114 ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1115
1116 make_link(argv[1], argv[2]);
1117 }
1118
1119 static void unlink_file_by_name(char *filename)
1120 {
1121 int retval;
1122 ext2_ino_t dir;
1123 char *basename;
1124
1125 basename = strrchr(filename, '/');
1126 if (basename) {
1127 *basename++ = '\0';
1128 dir = string_to_inode(filename);
1129 if (!dir)
1130 return;
1131 } else {
1132 dir = cwd;
1133 basename = filename;
1134 }
1135 retval = ext2fs_unlink(current_fs, dir, basename, 0, 0);
1136 if (retval)
1137 com_err("unlink_file_by_name", retval, 0);
1138 return;
1139 }
1140
1141 void do_unlink(int argc, char *argv[])
1142 {
1143 if (common_args_process(argc, argv, 2, 2, "link",
1144 "<pathname>", CHECK_FS_RW))
1145 return;
1146
1147 unlink_file_by_name(argv[1]);
1148 }
1149
1150 void do_find_free_block(int argc, char *argv[])
1151 {
1152 blk_t free_blk, goal;
1153 int count;
1154 errcode_t retval;
1155 char *tmp;
1156
1157 if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1158 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1159 return;
1160 }
1161 if (check_fs_open(argv[0]))
1162 return;
1163
1164 if (argc > 1) {
1165 count = strtol(argv[1],&tmp,0);
1166 if (*tmp) {
1167 com_err(argv[0], 0, "Bad count - %s", argv[1]);
1168 return;
1169 }
1170 } else
1171 count = 1;
1172
1173 if (argc > 2) {
1174 goal = strtol(argv[2], &tmp, 0);
1175 if (*tmp) {
1176 com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1177 return;
1178 }
1179 }
1180 else
1181 goal = current_fs->super->s_first_data_block;
1182
1183 printf("Free blocks found: ");
1184 free_blk = goal - 1;
1185 while (count-- > 0) {
1186 retval = ext2fs_new_block(current_fs, free_blk + 1, 0,
1187 &free_blk);
1188 if (retval) {
1189 com_err("ext2fs_new_block", retval, 0);
1190 return;
1191 } else
1192 printf("%u ", free_blk);
1193 }
1194 printf("\n");
1195 }
1196
1197 void do_find_free_inode(int argc, char *argv[])
1198 {
1199 ext2_ino_t free_inode, dir;
1200 int mode;
1201 int retval;
1202 char *tmp;
1203
1204 if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1205 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1206 return;
1207 }
1208 if (check_fs_open(argv[0]))
1209 return;
1210
1211 if (argc > 1) {
1212 dir = strtol(argv[1], &tmp, 0);
1213 if (*tmp) {
1214 com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1215 return;
1216 }
1217 }
1218 else
1219 dir = root;
1220 if (argc > 2) {
1221 mode = strtol(argv[2], &tmp, 0);
1222 if (*tmp) {
1223 com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1224 return;
1225 }
1226 } else
1227 mode = 010755;
1228
1229 retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1230 if (retval)
1231 com_err("ext2fs_new_inode", retval, 0);
1232 else
1233 printf("Free inode found: %u\n", free_inode);
1234 }
1235
1236 static errcode_t copy_file(int fd, ext2_ino_t newfile)
1237 {
1238 ext2_file_t e2_file;
1239 errcode_t retval;
1240 int got;
1241 unsigned int written;
1242 char buf[8192];
1243 char *ptr;
1244
1245 retval = ext2fs_file_open(current_fs, newfile,
1246 EXT2_FILE_WRITE, &e2_file);
1247 if (retval)
1248 return retval;
1249
1250 while (1) {
1251 got = read(fd, buf, sizeof(buf));
1252 if (got == 0)
1253 break;
1254 if (got < 0) {
1255 retval = errno;
1256 goto fail;
1257 }
1258 ptr = buf;
1259 while (got > 0) {
1260 retval = ext2fs_file_write(e2_file, ptr,
1261 got, &written);
1262 if (retval)
1263 goto fail;
1264
1265 got -= written;
1266 ptr += written;
1267 }
1268 }
1269 retval = ext2fs_file_close(e2_file);
1270 return retval;
1271
1272 fail:
1273 (void) ext2fs_file_close(e2_file);
1274 return retval;
1275 }
1276
1277
1278 void do_write(int argc, char *argv[])
1279 {
1280 int fd;
1281 struct stat statbuf;
1282 ext2_ino_t newfile;
1283 errcode_t retval;
1284 struct ext2_inode inode;
1285
1286 if (common_args_process(argc, argv, 3, 3, "write",
1287 "<native file> <new file>", CHECK_FS_RW))
1288 return;
1289
1290 fd = open(argv[1], O_RDONLY);
1291 if (fd < 0) {
1292 com_err(argv[1], errno, 0);
1293 return;
1294 }
1295 if (fstat(fd, &statbuf) < 0) {
1296 com_err(argv[1], errno, 0);
1297 close(fd);
1298 return;
1299 }
1300
1301 retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1302 if (retval == 0) {
1303 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1304 close(fd);
1305 return;
1306 }
1307
1308 retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1309 if (retval) {
1310 com_err(argv[0], retval, 0);
1311 close(fd);
1312 return;
1313 }
1314 printf("Allocated inode: %u\n", newfile);
1315 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1316 EXT2_FT_REG_FILE);
1317 if (retval == EXT2_ET_DIR_NO_SPACE) {
1318 retval = ext2fs_expand_dir(current_fs, cwd);
1319 if (retval) {
1320 com_err(argv[0], retval, "while expanding directory");
1321 return;
1322 }
1323 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1324 EXT2_FT_REG_FILE);
1325 }
1326 if (retval) {
1327 com_err(argv[2], retval, 0);
1328 close(fd);
1329 return;
1330 }
1331 if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1332 com_err(argv[0], 0, "Warning: inode already set");
1333 ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1334 memset(&inode, 0, sizeof(inode));
1335 inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
1336 inode.i_atime = inode.i_ctime = inode.i_mtime =
1337 current_fs->now ? current_fs->now : time(0);
1338 inode.i_links_count = 1;
1339 inode.i_size = statbuf.st_size;
1340 if (debugfs_write_new_inode(newfile, &inode, argv[0])) {
1341 close(fd);
1342 return;
1343 }
1344 if (LINUX_S_ISREG(inode.i_mode)) {
1345 retval = copy_file(fd, newfile);
1346 if (retval)
1347 com_err("copy_file", retval, 0);
1348 }
1349 close(fd);
1350 }
1351
1352 void do_mknod(int argc, char *argv[])
1353 {
1354 unsigned long mode, major, minor;
1355 ext2_ino_t newfile;
1356 errcode_t retval;
1357 struct ext2_inode inode;
1358 int filetype, nr;
1359
1360 if (check_fs_open(argv[0]))
1361 return;
1362 if (argc < 3 || argv[2][1]) {
1363 usage:
1364 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1365 return;
1366 }
1367 mode = minor = major = 0;
1368 switch (argv[2][0]) {
1369 case 'p':
1370 mode = LINUX_S_IFIFO;
1371 filetype = EXT2_FT_FIFO;
1372 nr = 3;
1373 break;
1374 case 'c':
1375 mode = LINUX_S_IFCHR;
1376 filetype = EXT2_FT_CHRDEV;
1377 nr = 5;
1378 break;
1379 case 'b':
1380 mode = LINUX_S_IFBLK;
1381 filetype = EXT2_FT_BLKDEV;
1382 nr = 5;
1383 break;
1384 default:
1385 filetype = 0;
1386 nr = 0;
1387 }
1388 if (nr == 5) {
1389 major = strtoul(argv[3], argv+3, 0);
1390 minor = strtoul(argv[4], argv+4, 0);
1391 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1392 nr = 0;
1393 }
1394 if (argc != nr)
1395 goto usage;
1396 if (check_fs_read_write(argv[0]))
1397 return;
1398 retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1399 if (retval) {
1400 com_err(argv[0], retval, 0);
1401 return;
1402 }
1403 printf("Allocated inode: %u\n", newfile);
1404 retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1405 if (retval == EXT2_ET_DIR_NO_SPACE) {
1406 retval = ext2fs_expand_dir(current_fs, cwd);
1407 if (retval) {
1408 com_err(argv[0], retval, "while expanding directory");
1409 return;
1410 }
1411 retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
1412 filetype);
1413 }
1414 if (retval) {
1415 com_err(argv[1], retval, 0);
1416 return;
1417 }
1418 if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1419 com_err(argv[0], 0, "Warning: inode already set");
1420 ext2fs_mark_inode_bitmap(current_fs->inode_map, newfile);
1421 ext2fs_mark_ib_dirty(current_fs);
1422 memset(&inode, 0, sizeof(inode));
1423 inode.i_mode = mode;
1424 inode.i_atime = inode.i_ctime = inode.i_mtime =
1425 current_fs->now ? current_fs->now : time(0);
1426 if ((major < 256) && (minor < 256)) {
1427 inode.i_block[0] = major*256+minor;
1428 inode.i_block[1] = 0;
1429 } else {
1430 inode.i_block[0] = 0;
1431 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
1432 }
1433 inode.i_links_count = 1;
1434 if (debugfs_write_new_inode(newfile, &inode, argv[0]))
1435 return;
1436 }
1437
1438 void do_mkdir(int argc, char *argv[])
1439 {
1440 char *cp;
1441 ext2_ino_t parent;
1442 char *name;
1443 errcode_t retval;
1444
1445 if (common_args_process(argc, argv, 2, 2, "mkdir",
1446 "<filename>", CHECK_FS_RW))
1447 return;
1448
1449 cp = strrchr(argv[1], '/');
1450 if (cp) {
1451 *cp = 0;
1452 parent = string_to_inode(argv[1]);
1453 if (!parent) {
1454 com_err(argv[1], ENOENT, 0);
1455 return;
1456 }
1457 name = cp+1;
1458 } else {
1459 parent = cwd;
1460 name = argv[1];
1461 }
1462
1463 try_again:
1464 retval = ext2fs_mkdir(current_fs, parent, 0, name);
1465 if (retval == EXT2_ET_DIR_NO_SPACE) {
1466 retval = ext2fs_expand_dir(current_fs, parent);
1467 if (retval) {
1468 com_err("argv[0]", retval, "while expanding directory");
1469 return;
1470 }
1471 goto try_again;
1472 }
1473 if (retval) {
1474 com_err("ext2fs_mkdir", retval, 0);
1475 return;
1476 }
1477
1478 }
1479
1480 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1481 int blockcnt EXT2FS_ATTR((unused)),
1482 void *private EXT2FS_ATTR((unused)))
1483 {
1484 blk_t block;
1485
1486 block = *blocknr;
1487 ext2fs_block_alloc_stats(fs, block, -1);
1488 return 0;
1489 }
1490
1491 static void kill_file_by_inode(ext2_ino_t inode)
1492 {
1493 struct ext2_inode inode_buf;
1494
1495 if (debugfs_read_inode(inode, &inode_buf, 0))
1496 return;
1497 inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1498 if (debugfs_write_inode(inode, &inode_buf, 0))
1499 return;
1500 if (!ext2fs_inode_has_valid_blocks(&inode_buf))
1501 return;
1502
1503 ext2fs_block_iterate(current_fs, inode, 0, NULL,
1504 release_blocks_proc, NULL);
1505 printf("\n");
1506 ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1507 LINUX_S_ISDIR(inode_buf.i_mode));
1508 }
1509
1510
1511 void do_kill_file(int argc, char *argv[])
1512 {
1513 ext2_ino_t inode_num;
1514
1515 if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1516 return;
1517
1518 kill_file_by_inode(inode_num);
1519 }
1520
1521 void do_rm(int argc, char *argv[])
1522 {
1523 int retval;
1524 ext2_ino_t inode_num;
1525 struct ext2_inode inode;
1526
1527 if (common_args_process(argc, argv, 2, 2, "rm",
1528 "<filename>", CHECK_FS_RW))
1529 return;
1530
1531 retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1532 if (retval) {
1533 com_err(argv[0], retval, "while trying to resolve filename");
1534 return;
1535 }
1536
1537 if (debugfs_read_inode(inode_num, &inode, argv[0]))
1538 return;
1539
1540 if (LINUX_S_ISDIR(inode.i_mode)) {
1541 com_err(argv[0], 0, "file is a directory");
1542 return;
1543 }
1544
1545 --inode.i_links_count;
1546 if (debugfs_write_inode(inode_num, &inode, argv[0]))
1547 return;
1548
1549 unlink_file_by_name(argv[1]);
1550 if (inode.i_links_count == 0)
1551 kill_file_by_inode(inode_num);
1552 }
1553
1554 struct rd_struct {
1555 ext2_ino_t parent;
1556 int empty;
1557 };
1558
1559 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1560 int entry EXT2FS_ATTR((unused)),
1561 struct ext2_dir_entry *dirent,
1562 int offset EXT2FS_ATTR((unused)),
1563 int blocksize EXT2FS_ATTR((unused)),
1564 char *buf EXT2FS_ATTR((unused)),
1565 void *private)
1566 {
1567 struct rd_struct *rds = (struct rd_struct *) private;
1568
1569 if (dirent->inode == 0)
1570 return 0;
1571 if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1572 return 0;
1573 if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1574 (dirent->name[1] == '.')) {
1575 rds->parent = dirent->inode;
1576 return 0;
1577 }
1578 rds->empty = 0;
1579 return 0;
1580 }
1581
1582 void do_rmdir(int argc, char *argv[])
1583 {
1584 int retval;
1585 ext2_ino_t inode_num;
1586 struct ext2_inode inode;
1587 struct rd_struct rds;
1588
1589 if (common_args_process(argc, argv, 2, 2, "rmdir",
1590 "<filename>", CHECK_FS_RW))
1591 return;
1592
1593 retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1594 if (retval) {
1595 com_err(argv[0], retval, "while trying to resolve filename");
1596 return;
1597 }
1598
1599 if (debugfs_read_inode(inode_num, &inode, argv[0]))
1600 return;
1601
1602 if (!LINUX_S_ISDIR(inode.i_mode)) {
1603 com_err(argv[0], 0, "file is not a directory");
1604 return;
1605 }
1606
1607 rds.parent = 0;
1608 rds.empty = 1;
1609
1610 retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1611 0, rmdir_proc, &rds);
1612 if (retval) {
1613 com_err(argv[0], retval, "while iterating over directory");
1614 return;
1615 }
1616 if (rds.empty == 0) {
1617 com_err(argv[0], 0, "directory not empty");
1618 return;
1619 }
1620
1621 inode.i_links_count = 0;
1622 if (debugfs_write_inode(inode_num, &inode, argv[0]))
1623 return;
1624
1625 unlink_file_by_name(argv[1]);
1626 kill_file_by_inode(inode_num);
1627
1628 if (rds.parent) {
1629 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1630 return;
1631 if (inode.i_links_count > 1)
1632 inode.i_links_count--;
1633 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1634 return;
1635 }
1636 }
1637
1638 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1639 char *argv[] EXT2FS_ATTR((unused)))
1640 {
1641 FILE *out = stdout;
1642
1643 if (current_fs)
1644 fprintf(out, "Open mode: read-%s\n",
1645 current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1646 fprintf(out, "Filesystem in use: %s\n",
1647 current_fs ? current_fs->device_name : "--none--");
1648 }
1649
1650 void do_expand_dir(int argc, char *argv[])
1651 {
1652 ext2_ino_t inode;
1653 int retval;
1654
1655 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1656 return;
1657
1658 retval = ext2fs_expand_dir(current_fs, inode);
1659 if (retval)
1660 com_err("ext2fs_expand_dir", retval, 0);
1661 return;
1662 }
1663
1664 void do_features(int argc, char *argv[])
1665 {
1666 int i;
1667
1668 if (check_fs_open(argv[0]))
1669 return;
1670
1671 if ((argc != 1) && check_fs_read_write(argv[0]))
1672 return;
1673 for (i=1; i < argc; i++) {
1674 if (e2p_edit_feature(argv[i],
1675 &current_fs->super->s_feature_compat, 0))
1676 com_err(argv[0], 0, "Unknown feature: %s\n",
1677 argv[i]);
1678 else
1679 ext2fs_mark_super_dirty(current_fs);
1680 }
1681 print_features(current_fs->super, stdout);
1682 }
1683
1684 void do_bmap(int argc, char *argv[])
1685 {
1686 ext2_ino_t ino;
1687 blk_t blk, pblk;
1688 int err;
1689 errcode_t errcode;
1690
1691 if (common_args_process(argc, argv, 3, 3, argv[0],
1692 "<file> logical_blk", 0))
1693 return;
1694
1695 ino = string_to_inode(argv[1]);
1696 if (!ino)
1697 return;
1698 blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
1699
1700 errcode = ext2fs_bmap(current_fs, ino, 0, 0, 0, blk, &pblk);
1701 if (errcode) {
1702 com_err("argv[0]", errcode,
1703 "while mapping logical block %u\n", blk);
1704 return;
1705 }
1706 printf("%u\n", pblk);
1707 }
1708
1709 void do_imap(int argc, char *argv[])
1710 {
1711 ext2_ino_t ino;
1712 unsigned long group, block, block_nr, offset;
1713
1714 if (common_args_process(argc, argv, 2, 2, argv[0],
1715 "<file>", 0))
1716 return;
1717 ino = string_to_inode(argv[1]);
1718 if (!ino)
1719 return;
1720
1721 group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
1722 offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
1723 EXT2_INODE_SIZE(current_fs->super);
1724 block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
1725 if (!current_fs->group_desc[(unsigned)group].bg_inode_table) {
1726 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
1727 group);
1728 return;
1729 }
1730 block_nr = current_fs->group_desc[(unsigned)group].bg_inode_table +
1731 block;
1732 offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
1733
1734 printf("Inode %d is part of block group %lu\n"
1735 "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
1736 block_nr, offset);
1737
1738 }
1739
1740 void do_set_current_time(int argc, char *argv[])
1741 {
1742 time_t now;
1743
1744 if (common_args_process(argc, argv, 2, 2, argv[0],
1745 "<time>", 0))
1746 return;
1747
1748 now = string_to_time(argv[1]);
1749 if (now == ((time_t) -1)) {
1750 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
1751 argv[1]);
1752 return;
1753
1754 } else {
1755 printf("Setting current time to %s\n", time_to_string(now));
1756 current_fs->now = now;
1757 }
1758 }
1759
1760 static int source_file(const char *cmd_file, int sci_idx)
1761 {
1762 FILE *f;
1763 char buf[256];
1764 char *cp;
1765 int exit_status = 0;
1766 int retval;
1767
1768 if (strcmp(cmd_file, "-") == 0)
1769 f = stdin;
1770 else {
1771 f = fopen(cmd_file, "r");
1772 if (!f) {
1773 perror(cmd_file);
1774 exit(1);
1775 }
1776 }
1777 setbuf(stdout, NULL);
1778 setbuf(stderr, NULL);
1779 while (!feof(f)) {
1780 if (fgets(buf, sizeof(buf), f) == NULL)
1781 break;
1782 cp = strchr(buf, '\n');
1783 if (cp)
1784 *cp = 0;
1785 cp = strchr(buf, '\r');
1786 if (cp)
1787 *cp = 0;
1788 printf("debugfs: %s\n", buf);
1789 retval = ss_execute_line(sci_idx, buf);
1790 if (retval) {
1791 ss_perror(sci_idx, retval, buf);
1792 exit_status++;
1793 }
1794 }
1795 return exit_status;
1796 }
1797
1798 int main(int argc, char **argv)
1799 {
1800 int retval;
1801 int sci_idx;
1802 const char *usage = "Usage: debugfs [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]";
1803 int c;
1804 int open_flags = EXT2_FLAG_SOFTSUPP_FEATURES;
1805 char *request = 0;
1806 int exit_status = 0;
1807 char *cmd_file = 0;
1808 blk_t superblock = 0;
1809 blk_t blocksize = 0;
1810 int catastrophic = 0;
1811 char *data_filename = 0;
1812
1813 add_error_table(&et_ext2_error_table);
1814 fprintf (stderr, "debugfs %s (%s)\n", E2FSPROGS_VERSION,
1815 E2FSPROGS_DATE);
1816
1817 while ((c = getopt (argc, argv, "iwcR:f:b:s:Vd:")) != EOF) {
1818 switch (c) {
1819 case 'R':
1820 request = optarg;
1821 break;
1822 case 'f':
1823 cmd_file = optarg;
1824 break;
1825 case 'd':
1826 data_filename = optarg;
1827 break;
1828 case 'i':
1829 open_flags |= EXT2_FLAG_IMAGE_FILE;
1830 break;
1831 case 'w':
1832 open_flags |= EXT2_FLAG_RW;
1833 break;
1834 case 'b':
1835 blocksize = parse_ulong(optarg, argv[0],
1836 "block size", 0);
1837 break;
1838 case 's':
1839 superblock = parse_ulong(optarg, argv[0],
1840 "superblock number", 0);
1841 break;
1842 case 'c':
1843 catastrophic = 1;
1844 break;
1845 case 'V':
1846 /* Print version number and exit */
1847 fprintf(stderr, "\tUsing %s\n",
1848 error_message(EXT2_ET_BASE));
1849 exit(0);
1850 default:
1851 com_err(argv[0], 0, usage);
1852 return 1;
1853 }
1854 }
1855 if (optind < argc)
1856 open_filesystem(argv[optind], open_flags,
1857 superblock, blocksize, catastrophic,
1858 data_filename);
1859
1860 sci_idx = ss_create_invocation("debugfs", "0.0", (char *) NULL,
1861 &debug_cmds, &retval);
1862 if (retval) {
1863 ss_perror(sci_idx, retval, "creating invocation");
1864 exit(1);
1865 }
1866 ss_get_readline(sci_idx);
1867
1868 (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
1869 if (retval) {
1870 ss_perror(sci_idx, retval, "adding standard requests");
1871 exit (1);
1872 }
1873 if (request) {
1874 retval = 0;
1875 retval = ss_execute_line(sci_idx, request);
1876 if (retval) {
1877 ss_perror(sci_idx, retval, request);
1878 exit_status++;
1879 }
1880 } else if (cmd_file) {
1881 exit_status = source_file(cmd_file, sci_idx);
1882 } else {
1883 ss_listen(sci_idx);
1884 }
1885
1886 if (current_fs)
1887 close_filesystem();
1888
1889 remove_error_table(&et_ext2_error_table);
1890 return exit_status;
1891 }
Unnamed repository; edit this file 'description' to name the repository.