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 "debugfs.h"
31 #include "uuid/uuid.h"
32 #include "e2p/e2p.h"
33
34 #include <ext2fs/ext2_ext_attr.h>
35
36 #include "../version.h"
37 #include "jfs_user.h"
38
39 #ifndef BUFSIZ
40 #define BUFSIZ 8192
41 #endif
42
43 /* 64KiB is the minimium blksize to best minimize system call overhead. */
44 #ifndef IO_BUFSIZE
45 #define IO_BUFSIZE 64*1024
46 #endif
47
48 /* Block size for `st_blocks' */
49 #ifndef S_BLKSIZE
50 #define S_BLKSIZE 512
51 #endif
52
53 ss_request_table *extra_cmds;
54 const char *debug_prog_name;
55 int sci_idx;
56
57 ext2_filsys current_fs = NULL;
58 ext2_ino_t root, cwd;
59
open_filesystem(char * device,int open_flags,blk64_t superblock,blk64_t blocksize,int catastrophic,char * data_filename)60 static void open_filesystem(char *device, int open_flags, blk64_t superblock,
61 blk64_t blocksize, int catastrophic,
62 char *data_filename)
63 {
64 int retval;
65 io_channel data_io = 0;
66
67 if (superblock != 0 && blocksize == 0) {
68 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
69 current_fs = NULL;
70 return;
71 }
72
73 if (data_filename) {
74 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
75 com_err(device, 0,
76 "The -d option is only valid when reading an e2image file");
77 current_fs = NULL;
78 return;
79 }
80 retval = unix_io_manager->open(data_filename, 0, &data_io);
81 if (retval) {
82 com_err(data_filename, 0, "while opening data source");
83 current_fs = NULL;
84 return;
85 }
86 }
87
88 if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
89 com_err(device, 0,
90 "opening read-only because of catastrophic mode");
91 open_flags &= ~EXT2_FLAG_RW;
92 }
93 if (catastrophic)
94 open_flags |= EXT2_FLAG_SKIP_MMP;
95
96 retval = ext2fs_open(device, open_flags, superblock, blocksize,
97 unix_io_manager, ¤t_fs);
98 if (retval) {
99 com_err(device, retval, "while opening filesystem");
100 current_fs = NULL;
101 return;
102 }
103 current_fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
104
105 if (catastrophic)
106 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
107 else {
108 retval = ext2fs_read_inode_bitmap(current_fs);
109 if (retval) {
110 com_err(device, retval, "while reading inode bitmap");
111 goto errout;
112 }
113 retval = ext2fs_read_block_bitmap(current_fs);
114 if (retval) {
115 com_err(device, retval, "while reading block bitmap");
116 goto errout;
117 }
118 }
119
120 if (data_io) {
121 retval = ext2fs_set_data_io(current_fs, data_io);
122 if (retval) {
123 com_err(device, retval,
124 "while setting data source");
125 goto errout;
126 }
127 }
128
129 root = cwd = EXT2_ROOT_INO;
130 return;
131
132 errout:
133 retval = ext2fs_close(current_fs);
134 if (retval)
135 com_err(device, retval, "while trying to close filesystem");
136 current_fs = NULL;
137 }
138
do_open_filesys(int argc,char ** argv)139 void do_open_filesys(int argc, char **argv)
140 {
141 int c, err;
142 int catastrophic = 0;
143 blk64_t superblock = 0;
144 blk64_t blocksize = 0;
145 int open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
146 char *data_filename = 0;
147
148 reset_getopt();
149 while ((c = getopt (argc, argv, "iwfecb:s:d:D")) != EOF) {
150 switch (c) {
151 case 'i':
152 open_flags |= EXT2_FLAG_IMAGE_FILE;
153 break;
154 case 'w':
155 #ifdef READ_ONLY
156 goto print_usage;
157 #else
158 open_flags |= EXT2_FLAG_RW;
159 #endif /* READ_ONLY */
160 break;
161 case 'f':
162 open_flags |= EXT2_FLAG_FORCE;
163 break;
164 case 'e':
165 open_flags |= EXT2_FLAG_EXCLUSIVE;
166 break;
167 case 'c':
168 catastrophic = 1;
169 break;
170 case 'd':
171 data_filename = optarg;
172 break;
173 case 'D':
174 open_flags |= EXT2_FLAG_DIRECT_IO;
175 break;
176 case 'b':
177 blocksize = parse_ulong(optarg, argv[0],
178 "block size", &err);
179 if (err)
180 return;
181 break;
182 case 's':
183 err = strtoblk(argv[0], optarg, &superblock);
184 if (err)
185 return;
186 break;
187 default:
188 goto print_usage;
189 }
190 }
191 if (optind != argc-1) {
192 goto print_usage;
193 }
194 if (check_fs_not_open(argv[0]))
195 return;
196 open_filesystem(argv[optind], open_flags,
197 superblock, blocksize, catastrophic,
198 data_filename);
199 return;
200
201 print_usage:
202 fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] "
203 "[-d image_filename] [-c] [-i] [-f] [-e] [-D] "
204 #ifndef READ_ONLY
205 "[-w] "
206 #endif
207 "<device>\n", argv[0]);
208 }
209
do_lcd(int argc,char ** argv)210 void do_lcd(int argc, char **argv)
211 {
212 if (argc != 2) {
213 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>");
214 return;
215 }
216
217 if (chdir(argv[1]) == -1) {
218 com_err(argv[0], errno,
219 "while trying to change native directory to %s",
220 argv[1]);
221 return;
222 }
223 }
224
close_filesystem(NOARGS)225 static void close_filesystem(NOARGS)
226 {
227 int retval;
228
229 if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
230 retval = ext2fs_write_inode_bitmap(current_fs);
231 if (retval)
232 com_err("ext2fs_write_inode_bitmap", retval, 0);
233 }
234 if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
235 retval = ext2fs_write_block_bitmap(current_fs);
236 if (retval)
237 com_err("ext2fs_write_block_bitmap", retval, 0);
238 }
239 retval = ext2fs_close(current_fs);
240 if (retval)
241 com_err("ext2fs_close", retval, 0);
242 current_fs = NULL;
243 return;
244 }
245
do_close_filesys(int argc,char ** argv)246 void do_close_filesys(int argc, char **argv)
247 {
248 int c;
249
250 if (check_fs_open(argv[0]))
251 return;
252
253 reset_getopt();
254 while ((c = getopt (argc, argv, "a")) != EOF) {
255 switch (c) {
256 case 'a':
257 current_fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
258 break;
259 default:
260 goto print_usage;
261 }
262 }
263
264 if (argc > optind) {
265 print_usage:
266 com_err(0, 0, "Usage: close_filesys [-a]");
267 return;
268 }
269
270 close_filesystem();
271 }
272
273 #ifndef READ_ONLY
do_init_filesys(int argc,char ** argv)274 void do_init_filesys(int argc, char **argv)
275 {
276 struct ext2_super_block param;
277 errcode_t retval;
278 int err;
279 blk64_t blocks;
280
281 if (common_args_process(argc, argv, 3, 3, "initialize",
282 "<device> <blocks>", CHECK_FS_NOTOPEN))
283 return;
284
285 memset(¶m, 0, sizeof(struct ext2_super_block));
286 err = strtoblk(argv[0], argv[2], &blocks);
287 if (err)
288 return;
289 ext2fs_blocks_count_set(¶m, blocks);
290 if (err)
291 return;
292 retval = ext2fs_initialize(argv[1], 0, ¶m,
293 unix_io_manager, ¤t_fs);
294 if (retval) {
295 com_err(argv[1], retval, "while initializing filesystem");
296 current_fs = NULL;
297 return;
298 }
299 root = cwd = EXT2_ROOT_INO;
300 return;
301 }
302
print_features(struct ext2_super_block * s,FILE * f)303 static void print_features(struct ext2_super_block * s, FILE *f)
304 {
305 int i, j, printed=0;
306 __u32 *mask = &s->s_feature_compat, m;
307
308 fputs("Filesystem features:", f);
309 for (i=0; i <3; i++,mask++) {
310 for (j=0,m=1; j < 32; j++, m<<=1) {
311 if (*mask & m) {
312 fprintf(f, " %s", e2p_feature2string(i, m));
313 printed++;
314 }
315 }
316 }
317 if (printed == 0)
318 fputs("(none)", f);
319 fputs("\n", f);
320 }
321 #endif /* READ_ONLY */
322
print_bg_opts(ext2_filsys fs,dgrp_t group,int mask,const char * str,int * first,FILE * f)323 static void print_bg_opts(ext2_filsys fs, dgrp_t group, int mask,
324 const char *str, int *first, FILE *f)
325 {
326 if (ext2fs_bg_flags_test(fs, group, mask)) {
327 if (*first) {
328 fputs(" [", f);
329 *first = 0;
330 } else
331 fputs(", ", f);
332 fputs(str, f);
333 }
334 }
335
do_show_super_stats(int argc,char * argv[])336 void do_show_super_stats(int argc, char *argv[])
337 {
338 const char *units ="block";
339 dgrp_t i;
340 FILE *out;
341 int c, header_only = 0;
342 int numdirs = 0, first, gdt_csum;
343
344 reset_getopt();
345 while ((c = getopt (argc, argv, "h")) != EOF) {
346 switch (c) {
347 case 'h':
348 header_only++;
349 break;
350 default:
351 goto print_usage;
352 }
353 }
354 if (optind != argc) {
355 goto print_usage;
356 }
357 if (check_fs_open(argv[0]))
358 return;
359 out = open_pager();
360
361 if (EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super,
362 EXT4_FEATURE_RO_COMPAT_BIGALLOC))
363 units = "cluster";
364
365 list_super2(current_fs->super, out);
366 for (i=0; i < current_fs->group_desc_count; i++)
367 numdirs += ext2fs_bg_used_dirs_count(current_fs, i);
368 fprintf(out, "Directories: %d\n", numdirs);
369
370 if (header_only) {
371 close_pager(out);
372 return;
373 }
374
375 gdt_csum = EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super,
376 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
377 for (i = 0; i < current_fs->group_desc_count; i++) {
378 fprintf(out, " Group %2d: block bitmap at %llu, "
379 "inode bitmap at %llu, "
380 "inode table at %llu\n"
381 " %u free %s%s, "
382 "%u free %s, "
383 "%u used %s%s",
384 i, ext2fs_block_bitmap_loc(current_fs, i),
385 ext2fs_inode_bitmap_loc(current_fs, i),
386 ext2fs_inode_table_loc(current_fs, i),
387 ext2fs_bg_free_blocks_count(current_fs, i), units,
388 ext2fs_bg_free_blocks_count(current_fs, i) != 1 ?
389 "s" : "",
390 ext2fs_bg_free_inodes_count(current_fs, i),
391 ext2fs_bg_free_inodes_count(current_fs, i) != 1 ?
392 "inodes" : "inode",
393 ext2fs_bg_used_dirs_count(current_fs, i),
394 ext2fs_bg_used_dirs_count(current_fs, i) != 1 ? "directories"
395 : "directory", gdt_csum ? ", " : "\n");
396 if (gdt_csum)
397 fprintf(out, "%u unused %s\n",
398 ext2fs_bg_itable_unused(current_fs, i),
399 ext2fs_bg_itable_unused(current_fs, i) != 1 ?
400 "inodes" : "inode");
401 first = 1;
402 print_bg_opts(current_fs, i, EXT2_BG_INODE_UNINIT, "Inode not init",
403 &first, out);
404 print_bg_opts(current_fs, i, EXT2_BG_BLOCK_UNINIT, "Block not init",
405 &first, out);
406 if (gdt_csum) {
407 fprintf(out, "%sChecksum 0x%04x",
408 first ? " [":", ", ext2fs_bg_checksum(current_fs, i));
409 first = 0;
410 }
411 if (!first)
412 fputs("]\n", out);
413 }
414 close_pager(out);
415 return;
416 print_usage:
417 fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
418 }
419
420 #ifndef READ_ONLY
do_dirty_filesys(int argc EXT2FS_ATTR ((unused)),char ** argv EXT2FS_ATTR ((unused)))421 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
422 char **argv EXT2FS_ATTR((unused)))
423 {
424 if (check_fs_open(argv[0]))
425 return;
426 if (check_fs_read_write(argv[0]))
427 return;
428
429 if (argv[1] && !strcmp(argv[1], "-clean"))
430 current_fs->super->s_state |= EXT2_VALID_FS;
431 else
432 current_fs->super->s_state &= ~EXT2_VALID_FS;
433 ext2fs_mark_super_dirty(current_fs);
434 }
435 #endif /* READ_ONLY */
436
437 struct list_blocks_struct {
438 FILE *f;
439 e2_blkcnt_t total;
440 blk64_t first_block, last_block;
441 e2_blkcnt_t first_bcnt, last_bcnt;
442 e2_blkcnt_t first;
443 };
444
finish_range(struct list_blocks_struct * lb)445 static void finish_range(struct list_blocks_struct *lb)
446 {
447 if (lb->first_block == 0)
448 return;
449 if (lb->first)
450 lb->first = 0;
451 else
452 fprintf(lb->f, ", ");
453 if (lb->first_block == lb->last_block)
454 fprintf(lb->f, "(%lld):%llu",
455 (long long)lb->first_bcnt, lb->first_block);
456 else
457 fprintf(lb->f, "(%lld-%lld):%llu-%llu",
458 (long long)lb->first_bcnt, (long long)lb->last_bcnt,
459 lb->first_block, lb->last_block);
460 lb->first_block = 0;
461 }
462
list_blocks_proc(ext2_filsys fs EXT2FS_ATTR ((unused)),blk64_t * blocknr,e2_blkcnt_t blockcnt,blk64_t ref_block EXT2FS_ATTR ((unused)),int ref_offset EXT2FS_ATTR ((unused)),void * private)463 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
464 blk64_t *blocknr, e2_blkcnt_t blockcnt,
465 blk64_t ref_block EXT2FS_ATTR((unused)),
466 int ref_offset EXT2FS_ATTR((unused)),
467 void *private)
468 {
469 struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
470
471 lb->total++;
472 if (blockcnt >= 0) {
473 /*
474 * See if we can add on to the existing range (if it exists)
475 */
476 if (lb->first_block &&
477 (lb->last_block+1 == *blocknr) &&
478 (lb->last_bcnt+1 == blockcnt)) {
479 lb->last_block = *blocknr;
480 lb->last_bcnt = blockcnt;
481 return 0;
482 }
483 /*
484 * Start a new range.
485 */
486 finish_range(lb);
487 lb->first_block = lb->last_block = *blocknr;
488 lb->first_bcnt = lb->last_bcnt = blockcnt;
489 return 0;
490 }
491 /*
492 * Not a normal block. Always force a new range.
493 */
494 finish_range(lb);
495 if (lb->first)
496 lb->first = 0;
497 else
498 fprintf(lb->f, ", ");
499 if (blockcnt == -1)
500 fprintf(lb->f, "(IND):%llu", (unsigned long long) *blocknr);
501 else if (blockcnt == -2)
502 fprintf(lb->f, "(DIND):%llu", (unsigned long long) *blocknr);
503 else if (blockcnt == -3)
504 fprintf(lb->f, "(TIND):%llu", (unsigned long long) *blocknr);
505 return 0;
506 }
507
dump_xattr_string(FILE * out,const char * str,int len)508 static void dump_xattr_string(FILE *out, const char *str, int len)
509 {
510 int printable = 0;
511 int i;
512
513 /* check: is string "printable enough?" */
514 for (i = 0; i < len; i++)
515 if (isprint(str[i]))
516 printable++;
517
518 if (printable <= len*7/8)
519 printable = 0;
520
521 for (i = 0; i < len; i++)
522 if (printable)
523 fprintf(out, isprint(str[i]) ? "%c" : "\\%03o",
524 (unsigned char)str[i]);
525 else
526 fprintf(out, "%02x ", (unsigned char)str[i]);
527 }
528
internal_dump_inode_extra(FILE * out,const char * prefix EXT2FS_ATTR ((unused)),ext2_ino_t inode_num EXT2FS_ATTR ((unused)),struct ext2_inode_large * inode)529 static void internal_dump_inode_extra(FILE *out,
530 const char *prefix EXT2FS_ATTR((unused)),
531 ext2_ino_t inode_num EXT2FS_ATTR((unused)),
532 struct ext2_inode_large *inode)
533 {
534 struct ext2_ext_attr_entry *entry;
535 __u32 *magic;
536 char *start, *end;
537 unsigned int storage_size;
538
539 fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
540 if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
541 EXT2_GOOD_OLD_INODE_SIZE) {
542 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
543 inode->i_extra_isize);
544 return;
545 }
546 storage_size = EXT2_INODE_SIZE(current_fs->super) -
547 EXT2_GOOD_OLD_INODE_SIZE -
548 inode->i_extra_isize;
549 magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
550 inode->i_extra_isize);
551 if (*magic == EXT2_EXT_ATTR_MAGIC) {
552 fprintf(out, "Extended attributes stored in inode body: \n");
553 end = (char *) inode + EXT2_INODE_SIZE(current_fs->super);
554 start = (char *) magic + sizeof(__u32);
555 entry = (struct ext2_ext_attr_entry *) start;
556 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
557 struct ext2_ext_attr_entry *next =
558 EXT2_EXT_ATTR_NEXT(entry);
559 if (entry->e_value_size > storage_size ||
560 (char *) next >= end) {
561 fprintf(out, "invalid EA entry in inode\n");
562 return;
563 }
564 fprintf(out, " ");
565 dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry),
566 entry->e_name_len);
567 fprintf(out, " = \"");
568 dump_xattr_string(out, start + entry->e_value_offs,
569 entry->e_value_size);
570 fprintf(out, "\" (%u)\n", entry->e_value_size);
571 entry = next;
572 }
573 }
574 }
575
dump_blocks(FILE * f,const char * prefix,ext2_ino_t inode)576 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
577 {
578 struct list_blocks_struct lb;
579
580 fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
581 lb.total = 0;
582 lb.first_block = 0;
583 lb.f = f;
584 lb.first = 1;
585 ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
586 list_blocks_proc, (void *)&lb);
587 finish_range(&lb);
588 if (lb.total)
589 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
590 fprintf(f,"\n");
591 }
592
int_log10(unsigned long long arg)593 static int int_log10(unsigned long long arg)
594 {
595 int l = 0;
596
597 arg = arg / 10;
598 while (arg) {
599 l++;
600 arg = arg / 10;
601 }
602 return l;
603 }
604
605 #define DUMP_LEAF_EXTENTS 0x01
606 #define DUMP_NODE_EXTENTS 0x02
607 #define DUMP_EXTENT_TABLE 0x04
608
dump_extents(FILE * f,const char * prefix,ext2_ino_t ino,int flags,int logical_width,int physical_width)609 static void dump_extents(FILE *f, const char *prefix, ext2_ino_t ino,
610 int flags, int logical_width, int physical_width)
611 {
612 ext2_extent_handle_t handle;
613 struct ext2fs_extent extent;
614 struct ext2_extent_info info;
615 int op = EXT2_EXTENT_ROOT;
616 unsigned int printed = 0;
617 errcode_t errcode;
618
619 errcode = ext2fs_extent_open(current_fs, ino, &handle);
620 if (errcode)
621 return;
622
623 if (flags & DUMP_EXTENT_TABLE)
624 fprintf(f, "Level Entries %*s %*s Length Flags\n",
625 (logical_width*2)+3, "Logical",
626 (physical_width*2)+3, "Physical");
627 else
628 fprintf(f, "%sEXTENTS:\n%s", prefix, prefix);
629
630 while (1) {
631 errcode = ext2fs_extent_get(handle, op, &extent);
632
633 if (errcode)
634 break;
635
636 op = EXT2_EXTENT_NEXT;
637
638 if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
639 continue;
640
641 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
642 if ((flags & DUMP_LEAF_EXTENTS) == 0)
643 continue;
644 } else {
645 if ((flags & DUMP_NODE_EXTENTS) == 0)
646 continue;
647 }
648
649 errcode = ext2fs_extent_get_info(handle, &info);
650 if (errcode)
651 continue;
652
653 if (!(extent.e_flags & EXT2_EXTENT_FLAGS_LEAF)) {
654 if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
655 continue;
656
657 if (flags & DUMP_EXTENT_TABLE) {
658 fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
659 "%*llu%*s %6u\n",
660 info.curr_level, info.max_depth,
661 info.curr_entry, info.num_entries,
662 logical_width,
663 extent.e_lblk,
664 logical_width,
665 extent.e_lblk + (extent.e_len - 1),
666 physical_width,
667 extent.e_pblk,
668 physical_width+3, "", extent.e_len);
669 continue;
670 }
671
672 fprintf(f, "%s(ETB%d):%lld",
673 printed ? ", " : "", info.curr_level,
674 extent.e_pblk);
675 printed = 1;
676 continue;
677 }
678
679 if (flags & DUMP_EXTENT_TABLE) {
680 fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
681 "%*llu - %*llu %6u %s\n",
682 info.curr_level, info.max_depth,
683 info.curr_entry, info.num_entries,
684 logical_width,
685 extent.e_lblk,
686 logical_width,
687 extent.e_lblk + (extent.e_len - 1),
688 physical_width,
689 extent.e_pblk,
690 physical_width,
691 extent.e_pblk + (extent.e_len - 1),
692 extent.e_len,
693 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
694 "Uninit" : "");
695 continue;
696 }
697
698 if (extent.e_len == 0)
699 continue;
700 else if (extent.e_len == 1)
701 fprintf(f,
702 "%s(%lld%s):%lld",
703 printed ? ", " : "",
704 extent.e_lblk,
705 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
706 "[u]" : "",
707 extent.e_pblk);
708 else
709 fprintf(f,
710 "%s(%lld-%lld%s):%lld-%lld",
711 printed ? ", " : "",
712 extent.e_lblk,
713 extent.e_lblk + (extent.e_len - 1),
714 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
715 "[u]" : "",
716 extent.e_pblk,
717 extent.e_pblk + (extent.e_len - 1));
718 printed = 1;
719 }
720 if (printed)
721 fprintf(f, "\n");
722 }
723
internal_dump_inode(FILE * out,const char * prefix,ext2_ino_t inode_num,struct ext2_inode * inode,int do_dump_blocks)724 void internal_dump_inode(FILE *out, const char *prefix,
725 ext2_ino_t inode_num, struct ext2_inode *inode,
726 int do_dump_blocks)
727 {
728 const char *i_type;
729 char frag, fsize;
730 int os = current_fs->super->s_creator_os;
731 struct ext2_inode_large *large_inode;
732 int is_large_inode = 0;
733
734 if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
735 is_large_inode = 1;
736 large_inode = (struct ext2_inode_large *) inode;
737
738 if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
739 else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
740 else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
741 else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
742 else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
743 else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
744 else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
745 else i_type = "bad type";
746 fprintf(out, "%sInode: %u Type: %s ", prefix, inode_num, i_type);
747 fprintf(out, "%sMode: %04o Flags: 0x%x\n",
748 prefix, inode->i_mode & 0777, inode->i_flags);
749 if (is_large_inode && large_inode->i_extra_isize >= 24) {
750 fprintf(out, "%sGeneration: %u Version: 0x%08x:%08x\n",
751 prefix, inode->i_generation, large_inode->i_version_hi,
752 inode->osd1.linux1.l_i_version);
753 } else {
754 fprintf(out, "%sGeneration: %u Version: 0x%08x\n", prefix,
755 inode->i_generation, inode->osd1.linux1.l_i_version);
756 }
757 fprintf(out, "%sUser: %5d Group: %5d Size: ",
758 prefix, inode_uid(*inode), inode_gid(*inode));
759 if (LINUX_S_ISREG(inode->i_mode))
760 fprintf(out, "%llu\n", EXT2_I_SIZE(inode));
761 else
762 fprintf(out, "%d\n", inode->i_size);
763 if (os == EXT2_OS_HURD)
764 fprintf(out,
765 "%sFile ACL: %d Directory ACL: %d Translator: %d\n",
766 prefix,
767 inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
768 inode->osd1.hurd1.h_i_translator);
769 else
770 fprintf(out, "%sFile ACL: %llu Directory ACL: %d\n",
771 prefix,
772 inode->i_file_acl | ((long long)
773 (inode->osd2.linux2.l_i_file_acl_high) << 32),
774 LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
775 if (os == EXT2_OS_LINUX)
776 fprintf(out, "%sLinks: %d Blockcount: %llu\n",
777 prefix, inode->i_links_count,
778 (((unsigned long long)
779 inode->osd2.linux2.l_i_blocks_hi << 32)) +
780 inode->i_blocks);
781 else
782 fprintf(out, "%sLinks: %d Blockcount: %u\n",
783 prefix, inode->i_links_count, inode->i_blocks);
784 switch (os) {
785 case EXT2_OS_HURD:
786 frag = inode->osd2.hurd2.h_i_frag;
787 fsize = inode->osd2.hurd2.h_i_fsize;
788 break;
789 default:
790 frag = fsize = 0;
791 }
792 fprintf(out, "%sFragment: Address: %d Number: %d Size: %d\n",
793 prefix, inode->i_faddr, frag, fsize);
794 if (is_large_inode && large_inode->i_extra_isize >= 24) {
795 fprintf(out, "%s ctime: 0x%08x:%08x -- %s", prefix,
796 inode->i_ctime, large_inode->i_ctime_extra,
797 time_to_string(inode->i_ctime));
798 fprintf(out, "%s atime: 0x%08x:%08x -- %s", prefix,
799 inode->i_atime, large_inode->i_atime_extra,
800 time_to_string(inode->i_atime));
801 fprintf(out, "%s mtime: 0x%08x:%08x -- %s", prefix,
802 inode->i_mtime, large_inode->i_mtime_extra,
803 time_to_string(inode->i_mtime));
804 fprintf(out, "%scrtime: 0x%08x:%08x -- %s", prefix,
805 large_inode->i_crtime, large_inode->i_crtime_extra,
806 time_to_string(large_inode->i_crtime));
807 } else {
808 fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
809 time_to_string(inode->i_ctime));
810 fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
811 time_to_string(inode->i_atime));
812 fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
813 time_to_string(inode->i_mtime));
814 }
815 if (inode->i_dtime)
816 fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
817 time_to_string(inode->i_dtime));
818 if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
819 internal_dump_inode_extra(out, prefix, inode_num,
820 (struct ext2_inode_large *) inode);
821 if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
822 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
823 (int) inode->i_size, (char *)inode->i_block);
824 else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
825 int major, minor;
826 const char *devnote;
827
828 if (inode->i_block[0]) {
829 major = (inode->i_block[0] >> 8) & 255;
830 minor = inode->i_block[0] & 255;
831 devnote = "";
832 } else {
833 major = (inode->i_block[1] & 0xfff00) >> 8;
834 minor = ((inode->i_block[1] & 0xff) |
835 ((inode->i_block[1] >> 12) & 0xfff00));
836 devnote = "(New-style) ";
837 }
838 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
839 devnote, major, minor, major, minor);
840 } else if (do_dump_blocks) {
841 if (inode->i_flags & EXT4_EXTENTS_FL)
842 dump_extents(out, prefix, inode_num,
843 DUMP_LEAF_EXTENTS|DUMP_NODE_EXTENTS, 0, 0);
844 else
845 dump_blocks(out, prefix, inode_num);
846 }
847 }
848
dump_inode(ext2_ino_t inode_num,struct ext2_inode * inode)849 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
850 {
851 FILE *out;
852
853 out = open_pager();
854 internal_dump_inode(out, "", inode_num, inode, 1);
855 close_pager(out);
856 }
857
do_stat(int argc,char * argv[])858 void do_stat(int argc, char *argv[])
859 {
860 ext2_ino_t inode;
861 struct ext2_inode * inode_buf;
862
863 if (check_fs_open(argv[0]))
864 return;
865
866 inode_buf = (struct ext2_inode *)
867 malloc(EXT2_INODE_SIZE(current_fs->super));
868 if (!inode_buf) {
869 fprintf(stderr, "do_stat: can't allocate buffer\n");
870 return;
871 }
872
873 if (common_inode_args_process(argc, argv, &inode, 0)) {
874 free(inode_buf);
875 return;
876 }
877
878 if (debugfs_read_inode_full(inode, inode_buf, argv[0],
879 EXT2_INODE_SIZE(current_fs->super))) {
880 free(inode_buf);
881 return;
882 }
883
884 dump_inode(inode, inode_buf);
885 free(inode_buf);
886 return;
887 }
888
do_dump_extents(int argc,char ** argv)889 void do_dump_extents(int argc, char **argv)
890 {
891 struct ext2_inode inode;
892 ext2_ino_t ino;
893 FILE *out;
894 int c, flags = 0;
895 int logical_width;
896 int physical_width;
897
898 reset_getopt();
899 while ((c = getopt(argc, argv, "nl")) != EOF) {
900 switch (c) {
901 case 'n':
902 flags |= DUMP_NODE_EXTENTS;
903 break;
904 case 'l':
905 flags |= DUMP_LEAF_EXTENTS;
906 break;
907 }
908 }
909
910 if (argc != optind + 1) {
911 com_err(0, 0, "Usage: dump_extents [-n] [-l] file");
912 return;
913 }
914
915 if (flags == 0)
916 flags = DUMP_NODE_EXTENTS | DUMP_LEAF_EXTENTS;
917 flags |= DUMP_EXTENT_TABLE;
918
919 if (check_fs_open(argv[0]))
920 return;
921
922 ino = string_to_inode(argv[optind]);
923 if (ino == 0)
924 return;
925
926 if (debugfs_read_inode(ino, &inode, argv[0]))
927 return;
928
929 if ((inode.i_flags & EXT4_EXTENTS_FL) == 0) {
930 fprintf(stderr, "%s: does not uses extent block maps\n",
931 argv[optind]);
932 return;
933 }
934
935 logical_width = int_log10((EXT2_I_SIZE(&inode)+current_fs->blocksize-1)/
936 current_fs->blocksize) + 1;
937 if (logical_width < 5)
938 logical_width = 5;
939 physical_width = int_log10(ext2fs_blocks_count(current_fs->super)) + 1;
940 if (physical_width < 5)
941 physical_width = 5;
942
943 out = open_pager();
944 dump_extents(out, "", ino, flags, logical_width, physical_width);
945 close_pager(out);
946 return;
947 }
948
print_blocks_proc(ext2_filsys fs EXT2FS_ATTR ((unused)),blk64_t * blocknr,e2_blkcnt_t blockcnt EXT2FS_ATTR ((unused)),blk64_t ref_block EXT2FS_ATTR ((unused)),int ref_offset EXT2FS_ATTR ((unused)),void * private EXT2FS_ATTR ((unused)))949 static int print_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
950 blk64_t *blocknr,
951 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
952 blk64_t ref_block EXT2FS_ATTR((unused)),
953 int ref_offset EXT2FS_ATTR((unused)),
954 void *private EXT2FS_ATTR((unused)))
955 {
956 printf("%llu ", *blocknr);
957 return 0;
958 }
959
do_blocks(int argc,char * argv[])960 void do_blocks(int argc, char *argv[])
961 {
962 ext2_ino_t inode;
963
964 if (check_fs_open(argv[0]))
965 return;
966
967 if (common_inode_args_process(argc, argv, &inode, 0)) {
968 return;
969 }
970
971 ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
972 print_blocks_proc, NULL);
973 fputc('\n', stdout);
974 return;
975 }
976
do_chroot(int argc,char * argv[])977 void do_chroot(int argc, char *argv[])
978 {
979 ext2_ino_t inode;
980 int retval;
981
982 if (common_inode_args_process(argc, argv, &inode, 0))
983 return;
984
985 retval = ext2fs_check_directory(current_fs, inode);
986 if (retval) {
987 com_err(argv[1], retval, 0);
988 return;
989 }
990 root = inode;
991 }
992
993 #ifndef READ_ONLY
do_clri(int argc,char * argv[])994 void do_clri(int argc, char *argv[])
995 {
996 ext2_ino_t inode;
997 struct ext2_inode inode_buf;
998
999 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1000 return;
1001
1002 if (debugfs_read_inode(inode, &inode_buf, argv[0]))
1003 return;
1004 memset(&inode_buf, 0, sizeof(inode_buf));
1005 if (debugfs_write_inode(inode, &inode_buf, argv[0]))
1006 return;
1007 }
1008
do_freei(int argc,char * argv[])1009 void do_freei(int argc, char *argv[])
1010 {
1011 unsigned int len = 1;
1012 int err = 0;
1013 ext2_ino_t inode;
1014
1015 if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1016 CHECK_FS_RW | CHECK_FS_BITMAPS))
1017 return;
1018 if (check_fs_read_write(argv[0]))
1019 return;
1020
1021 inode = string_to_inode(argv[1]);
1022 if (!inode)
1023 return;
1024
1025 if (argc == 3) {
1026 len = parse_ulong(argv[2], argv[0], "length", &err);
1027 if (err)
1028 return;
1029 }
1030
1031 if (len == 1 &&
1032 !ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1033 com_err(argv[0], 0, "Warning: inode already clear");
1034 while (len-- > 0)
1035 ext2fs_unmark_inode_bitmap2(current_fs->inode_map, inode++);
1036 ext2fs_mark_ib_dirty(current_fs);
1037 }
1038
do_seti(int argc,char * argv[])1039 void do_seti(int argc, char *argv[])
1040 {
1041 unsigned int len = 1;
1042 int err = 0;
1043 ext2_ino_t inode;
1044
1045 if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1046 CHECK_FS_RW | CHECK_FS_BITMAPS))
1047 return;
1048 if (check_fs_read_write(argv[0]))
1049 return;
1050
1051 inode = string_to_inode(argv[1]);
1052 if (!inode)
1053 return;
1054
1055 if (argc == 3) {
1056 len = parse_ulong(argv[2], argv[0], "length", &err);
1057 if (err)
1058 return;
1059 }
1060
1061 if ((len == 1) &&
1062 ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1063 com_err(argv[0], 0, "Warning: inode already set");
1064 while (len-- > 0)
1065 ext2fs_mark_inode_bitmap2(current_fs->inode_map, inode++);
1066 ext2fs_mark_ib_dirty(current_fs);
1067 }
1068 #endif /* READ_ONLY */
1069
do_testi(int argc,char * argv[])1070 void do_testi(int argc, char *argv[])
1071 {
1072 ext2_ino_t inode;
1073
1074 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
1075 return;
1076
1077 if (ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1078 printf("Inode %u is marked in use\n", inode);
1079 else
1080 printf("Inode %u is not in use\n", inode);
1081 }
1082
1083 #ifndef READ_ONLY
do_freeb(int argc,char * argv[])1084 void do_freeb(int argc, char *argv[])
1085 {
1086 blk64_t block;
1087 blk64_t count = 1;
1088
1089 if (common_block_args_process(argc, argv, &block, &count))
1090 return;
1091 if (check_fs_read_write(argv[0]))
1092 return;
1093 while (count-- > 0) {
1094 if (!ext2fs_test_block_bitmap2(current_fs->block_map,block))
1095 com_err(argv[0], 0, "Warning: block %llu already clear",
1096 block);
1097 ext2fs_unmark_block_bitmap2(current_fs->block_map,block);
1098 block++;
1099 }
1100 ext2fs_mark_bb_dirty(current_fs);
1101 }
1102
do_setb(int argc,char * argv[])1103 void do_setb(int argc, char *argv[])
1104 {
1105 blk64_t block;
1106 blk64_t count = 1;
1107
1108 if (common_block_args_process(argc, argv, &block, &count))
1109 return;
1110 if (check_fs_read_write(argv[0]))
1111 return;
1112 while (count-- > 0) {
1113 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1114 com_err(argv[0], 0, "Warning: block %llu already set",
1115 block);
1116 ext2fs_mark_block_bitmap2(current_fs->block_map,block);
1117 block++;
1118 }
1119 ext2fs_mark_bb_dirty(current_fs);
1120 }
1121 #endif /* READ_ONLY */
1122
do_testb(int argc,char * argv[])1123 void do_testb(int argc, char *argv[])
1124 {
1125 blk64_t block;
1126 blk64_t count = 1;
1127
1128 if (common_block_args_process(argc, argv, &block, &count))
1129 return;
1130 while (count-- > 0) {
1131 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1132 printf("Block %llu marked in use\n", block);
1133 else
1134 printf("Block %llu not in use\n", block);
1135 block++;
1136 }
1137 }
1138
1139 #ifndef READ_ONLY
modify_u8(char * com,const char * prompt,const char * format,__u8 * val)1140 static void modify_u8(char *com, const char *prompt,
1141 const char *format, __u8 *val)
1142 {
1143 char buf[200];
1144 unsigned long v;
1145 char *tmp;
1146
1147 sprintf(buf, format, *val);
1148 printf("%30s [%s] ", prompt, buf);
1149 if (!fgets(buf, sizeof(buf), stdin))
1150 return;
1151 if (buf[strlen (buf) - 1] == '\n')
1152 buf[strlen (buf) - 1] = '\0';
1153 if (!buf[0])
1154 return;
1155 v = strtoul(buf, &tmp, 0);
1156 if (*tmp)
1157 com_err(com, 0, "Bad value - %s", buf);
1158 else
1159 *val = v;
1160 }
1161
modify_u16(char * com,const char * prompt,const char * format,__u16 * val)1162 static void modify_u16(char *com, const char *prompt,
1163 const char *format, __u16 *val)
1164 {
1165 char buf[200];
1166 unsigned long v;
1167 char *tmp;
1168
1169 sprintf(buf, format, *val);
1170 printf("%30s [%s] ", prompt, buf);
1171 if (!fgets(buf, sizeof(buf), stdin))
1172 return;
1173 if (buf[strlen (buf) - 1] == '\n')
1174 buf[strlen (buf) - 1] = '\0';
1175 if (!buf[0])
1176 return;
1177 v = strtoul(buf, &tmp, 0);
1178 if (*tmp)
1179 com_err(com, 0, "Bad value - %s", buf);
1180 else
1181 *val = v;
1182 }
1183
modify_u32(char * com,const char * prompt,const char * format,__u32 * val)1184 static void modify_u32(char *com, const char *prompt,
1185 const char *format, __u32 *val)
1186 {
1187 char buf[200];
1188 unsigned long v;
1189 char *tmp;
1190
1191 sprintf(buf, format, *val);
1192 printf("%30s [%s] ", prompt, buf);
1193 if (!fgets(buf, sizeof(buf), stdin))
1194 return;
1195 if (buf[strlen (buf) - 1] == '\n')
1196 buf[strlen (buf) - 1] = '\0';
1197 if (!buf[0])
1198 return;
1199 v = strtoul(buf, &tmp, 0);
1200 if (*tmp)
1201 com_err(com, 0, "Bad value - %s", buf);
1202 else
1203 *val = v;
1204 }
1205
1206
do_modify_inode(int argc,char * argv[])1207 void do_modify_inode(int argc, char *argv[])
1208 {
1209 struct ext2_inode inode;
1210 ext2_ino_t inode_num;
1211 int i;
1212 unsigned char *frag, *fsize;
1213 char buf[80];
1214 int os;
1215 const char *hex_format = "0x%x";
1216 const char *octal_format = "0%o";
1217 const char *decimal_format = "%d";
1218 const char *unsignedlong_format = "%lu";
1219
1220 if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1221 return;
1222
1223 os = current_fs->super->s_creator_os;
1224
1225 if (debugfs_read_inode(inode_num, &inode, argv[1]))
1226 return;
1227
1228 modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
1229 modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
1230 modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
1231 modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
1232 modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
1233 modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
1234 modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
1235 modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
1236 modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
1237 if (os == EXT2_OS_LINUX)
1238 modify_u16(argv[0], "Block count high", unsignedlong_format,
1239 &inode.osd2.linux2.l_i_blocks_hi);
1240 modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
1241 modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
1242 modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
1243 #if 0
1244 modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
1245 #endif
1246 modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
1247 if (LINUX_S_ISDIR(inode.i_mode))
1248 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
1249 else
1250 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
1251
1252 if (os == EXT2_OS_HURD)
1253 modify_u32(argv[0], "Translator Block",
1254 decimal_format, &inode.osd1.hurd1.h_i_translator);
1255
1256 modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
1257 switch (os) {
1258 case EXT2_OS_HURD:
1259 frag = &inode.osd2.hurd2.h_i_frag;
1260 fsize = &inode.osd2.hurd2.h_i_fsize;
1261 break;
1262 default:
1263 frag = fsize = 0;
1264 }
1265 if (frag)
1266 modify_u8(argv[0], "Fragment number", decimal_format, frag);
1267 if (fsize)
1268 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
1269
1270 for (i=0; i < EXT2_NDIR_BLOCKS; i++) {
1271 sprintf(buf, "Direct Block #%d", i);
1272 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
1273 }
1274 modify_u32(argv[0], "Indirect Block", decimal_format,
1275 &inode.i_block[EXT2_IND_BLOCK]);
1276 modify_u32(argv[0], "Double Indirect Block", decimal_format,
1277 &inode.i_block[EXT2_DIND_BLOCK]);
1278 modify_u32(argv[0], "Triple Indirect Block", decimal_format,
1279 &inode.i_block[EXT2_TIND_BLOCK]);
1280 if (debugfs_write_inode(inode_num, &inode, argv[1]))
1281 return;
1282 }
1283 #endif /* READ_ONLY */
1284
do_change_working_dir(int argc,char * argv[])1285 void do_change_working_dir(int argc, char *argv[])
1286 {
1287 ext2_ino_t inode;
1288 int retval;
1289
1290 if (common_inode_args_process(argc, argv, &inode, 0))
1291 return;
1292
1293 retval = ext2fs_check_directory(current_fs, inode);
1294 if (retval) {
1295 com_err(argv[1], retval, 0);
1296 return;
1297 }
1298 cwd = inode;
1299 return;
1300 }
1301
do_print_working_directory(int argc,char * argv[])1302 void do_print_working_directory(int argc, char *argv[])
1303 {
1304 int retval;
1305 char *pathname = NULL;
1306
1307 if (common_args_process(argc, argv, 1, 1,
1308 "print_working_directory", "", 0))
1309 return;
1310
1311 retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
1312 if (retval) {
1313 com_err(argv[0], retval,
1314 "while trying to get pathname of cwd");
1315 }
1316 printf("[pwd] INODE: %6u PATH: %s\n",
1317 cwd, pathname ? pathname : "NULL");
1318 if (pathname) {
1319 free(pathname);
1320 pathname = NULL;
1321 }
1322 retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
1323 if (retval) {
1324 com_err(argv[0], retval,
1325 "while trying to get pathname of root");
1326 }
1327 printf("[root] INODE: %6u PATH: %s\n",
1328 root, pathname ? pathname : "NULL");
1329 if (pathname) {
1330 free(pathname);
1331 pathname = NULL;
1332 }
1333 return;
1334 }
1335
1336 #ifndef READ_ONLY
make_link(char * sourcename,char * destname)1337 static void make_link(char *sourcename, char *destname)
1338 {
1339 ext2_ino_t ino;
1340 struct ext2_inode inode;
1341 int retval;
1342 ext2_ino_t dir;
1343 char *dest, *cp, *base_name;
1344
1345 /*
1346 * Get the source inode
1347 */
1348 ino = string_to_inode(sourcename);
1349 if (!ino)
1350 return;
1351 base_name = strrchr(sourcename, '/');
1352 if (base_name)
1353 base_name++;
1354 else
1355 base_name = sourcename;
1356 /*
1357 * Figure out the destination. First see if it exists and is
1358 * a directory.
1359 */
1360 if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1361 dest = base_name;
1362 else {
1363 /*
1364 * OK, it doesn't exist. See if it is
1365 * '<dir>/basename' or 'basename'
1366 */
1367 cp = strrchr(destname, '/');
1368 if (cp) {
1369 *cp = 0;
1370 dir = string_to_inode(destname);
1371 if (!dir)
1372 return;
1373 dest = cp+1;
1374 } else {
1375 dir = cwd;
1376 dest = destname;
1377 }
1378 }
1379
1380 if (debugfs_read_inode(ino, &inode, sourcename))
1381 return;
1382
1383 retval = ext2fs_link(current_fs, dir, dest, ino,
1384 ext2_file_type(inode.i_mode));
1385 if (retval)
1386 com_err("make_link", retval, 0);
1387 return;
1388 }
1389
1390
do_link(int argc,char * argv[])1391 void do_link(int argc, char *argv[])
1392 {
1393 if (common_args_process(argc, argv, 3, 3, "link",
1394 "<source file> <dest_name>", CHECK_FS_RW))
1395 return;
1396
1397 make_link(argv[1], argv[2]);
1398 }
1399
mark_blocks_proc(ext2_filsys fs,blk64_t * blocknr,e2_blkcnt_t blockcnt EXT2FS_ATTR ((unused)),blk64_t ref_block EXT2FS_ATTR ((unused)),int ref_offset EXT2FS_ATTR ((unused)),void * private EXT2FS_ATTR ((unused)))1400 static int mark_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1401 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1402 blk64_t ref_block EXT2FS_ATTR((unused)),
1403 int ref_offset EXT2FS_ATTR((unused)),
1404 void *private EXT2FS_ATTR((unused)))
1405 {
1406 blk64_t block;
1407
1408 block = *blocknr;
1409 ext2fs_block_alloc_stats2(fs, block, +1);
1410 return 0;
1411 }
1412
do_undel(int argc,char * argv[])1413 void do_undel(int argc, char *argv[])
1414 {
1415 ext2_ino_t ino;
1416 struct ext2_inode inode;
1417
1418 if (common_args_process(argc, argv, 2, 3, "undelete",
1419 "<inode_num> [dest_name]",
1420 CHECK_FS_RW | CHECK_FS_BITMAPS))
1421 return;
1422
1423 ino = string_to_inode(argv[1]);
1424 if (!ino)
1425 return;
1426
1427 if (debugfs_read_inode(ino, &inode, argv[1]))
1428 return;
1429
1430 if (ext2fs_test_inode_bitmap2(current_fs->inode_map, ino)) {
1431 com_err(argv[1], 0, "Inode is not marked as deleted");
1432 return;
1433 }
1434
1435 /*
1436 * XXX this function doesn't handle changing the links count on the
1437 * parent directory when undeleting a directory.
1438 */
1439 inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1440 inode.i_dtime = 0;
1441
1442 if (debugfs_write_inode(ino, &inode, argv[0]))
1443 return;
1444
1445 ext2fs_block_iterate3(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL,
1446 mark_blocks_proc, NULL);
1447
1448 ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1449
1450 if (argc > 2)
1451 make_link(argv[1], argv[2]);
1452 }
1453
unlink_file_by_name(char * filename)1454 static void unlink_file_by_name(char *filename)
1455 {
1456 int retval;
1457 ext2_ino_t dir;
1458 char *base_name;
1459
1460 base_name = strrchr(filename, '/');
1461 if (base_name) {
1462 *base_name++ = '\0';
1463 dir = string_to_inode(filename);
1464 if (!dir)
1465 return;
1466 } else {
1467 dir = cwd;
1468 base_name = filename;
1469 }
1470 retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
1471 if (retval)
1472 com_err("unlink_file_by_name", retval, 0);
1473 return;
1474 }
1475
do_unlink(int argc,char * argv[])1476 void do_unlink(int argc, char *argv[])
1477 {
1478 if (common_args_process(argc, argv, 2, 2, "link",
1479 "<pathname>", CHECK_FS_RW))
1480 return;
1481
1482 unlink_file_by_name(argv[1]);
1483 }
1484 #endif /* READ_ONLY */
1485
do_find_free_block(int argc,char * argv[])1486 void do_find_free_block(int argc, char *argv[])
1487 {
1488 blk64_t free_blk, goal, first_free = 0;
1489 int count;
1490 errcode_t retval;
1491 char *tmp;
1492
1493 if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1494 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1495 return;
1496 }
1497 if (check_fs_open(argv[0]))
1498 return;
1499
1500 if (argc > 1) {
1501 count = strtol(argv[1],&tmp,0);
1502 if (*tmp) {
1503 com_err(argv[0], 0, "Bad count - %s", argv[1]);
1504 return;
1505 }
1506 } else
1507 count = 1;
1508
1509 if (argc > 2) {
1510 goal = strtol(argv[2], &tmp, 0);
1511 if (*tmp) {
1512 com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1513 return;
1514 }
1515 }
1516 else
1517 goal = current_fs->super->s_first_data_block;
1518
1519 printf("Free blocks found: ");
1520 free_blk = goal - 1;
1521 while (count-- > 0) {
1522 retval = ext2fs_new_block2(current_fs, free_blk + 1, 0,
1523 &free_blk);
1524 if (first_free) {
1525 if (first_free == free_blk)
1526 break;
1527 } else
1528 first_free = free_blk;
1529 if (retval) {
1530 com_err("ext2fs_new_block", retval, 0);
1531 return;
1532 } else
1533 printf("%llu ", free_blk);
1534 }
1535 printf("\n");
1536 }
1537
do_find_free_inode(int argc,char * argv[])1538 void do_find_free_inode(int argc, char *argv[])
1539 {
1540 ext2_ino_t free_inode, dir;
1541 int mode;
1542 int retval;
1543 char *tmp;
1544
1545 if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1546 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1547 return;
1548 }
1549 if (check_fs_open(argv[0]))
1550 return;
1551
1552 if (argc > 1) {
1553 dir = strtol(argv[1], &tmp, 0);
1554 if (*tmp) {
1555 com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1556 return;
1557 }
1558 }
1559 else
1560 dir = root;
1561 if (argc > 2) {
1562 mode = strtol(argv[2], &tmp, 0);
1563 if (*tmp) {
1564 com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1565 return;
1566 }
1567 } else
1568 mode = 010755;
1569
1570 retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1571 if (retval)
1572 com_err("ext2fs_new_inode", retval, 0);
1573 else
1574 printf("Free inode found: %u\n", free_inode);
1575 }
1576
1577 #ifndef READ_ONLY
copy_file(int fd,ext2_ino_t newfile,int bufsize,int make_holes)1578 static errcode_t copy_file(int fd, ext2_ino_t newfile, int bufsize, int make_holes)
1579 {
1580 ext2_file_t e2_file;
1581 errcode_t retval;
1582 int got;
1583 unsigned int written;
1584 char *buf;
1585 char *ptr;
1586 char *zero_buf;
1587 int cmp;
1588
1589 retval = ext2fs_file_open(current_fs, newfile,
1590 EXT2_FILE_WRITE, &e2_file);
1591 if (retval)
1592 return retval;
1593
1594 retval = ext2fs_get_mem(bufsize, &buf);
1595 if (retval) {
1596 com_err("copy_file", retval, "can't allocate buffer\n");
1597 return retval;
1598 }
1599
1600 /* This is used for checking whether the whole block is zero */
1601 retval = ext2fs_get_memzero(bufsize, &zero_buf);
1602 if (retval) {
1603 com_err("copy_file", retval, "can't allocate buffer\n");
1604 ext2fs_free_mem(&buf);
1605 return retval;
1606 }
1607
1608 while (1) {
1609 got = read(fd, buf, bufsize);
1610 if (got == 0)
1611 break;
1612 if (got < 0) {
1613 retval = errno;
1614 goto fail;
1615 }
1616 ptr = buf;
1617
1618 /* Sparse copy */
1619 if (make_holes) {
1620 /* Check whether all is zero */
1621 cmp = memcmp(ptr, zero_buf, got);
1622 if (cmp == 0) {
1623 /* The whole block is zero, make a hole */
1624 retval = ext2fs_file_lseek(e2_file, got, EXT2_SEEK_CUR, NULL);
1625 if (retval)
1626 goto fail;
1627 got = 0;
1628 }
1629 }
1630
1631 /* Normal copy */
1632 while (got > 0) {
1633 retval = ext2fs_file_write(e2_file, ptr,
1634 got, &written);
1635 if (retval)
1636 goto fail;
1637
1638 got -= written;
1639 ptr += written;
1640 }
1641 }
1642 ext2fs_free_mem(&buf);
1643 ext2fs_free_mem(&zero_buf);
1644 retval = ext2fs_file_close(e2_file);
1645 return retval;
1646
1647 fail:
1648 ext2fs_free_mem(&buf);
1649 ext2fs_free_mem(&zero_buf);
1650 (void) ext2fs_file_close(e2_file);
1651 return retval;
1652 }
1653
1654
do_write(int argc,char * argv[])1655 void do_write(int argc, char *argv[])
1656 {
1657 int fd;
1658 struct stat statbuf;
1659 ext2_ino_t newfile;
1660 errcode_t retval;
1661 struct ext2_inode inode;
1662 int bufsize = IO_BUFSIZE;
1663 int make_holes = 0;
1664
1665 if (common_args_process(argc, argv, 3, 3, "write",
1666 "<native file> <new file>", CHECK_FS_RW))
1667 return;
1668
1669 fd = open(argv[1], O_RDONLY);
1670 if (fd < 0) {
1671 com_err(argv[1], errno, 0);
1672 return;
1673 }
1674 if (fstat(fd, &statbuf) < 0) {
1675 com_err(argv[1], errno, 0);
1676 close(fd);
1677 return;
1678 }
1679
1680 retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1681 if (retval == 0) {
1682 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1683 close(fd);
1684 return;
1685 }
1686
1687 retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1688 if (retval) {
1689 com_err(argv[0], retval, 0);
1690 close(fd);
1691 return;
1692 }
1693 printf("Allocated inode: %u\n", newfile);
1694 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1695 EXT2_FT_REG_FILE);
1696 if (retval == EXT2_ET_DIR_NO_SPACE) {
1697 retval = ext2fs_expand_dir(current_fs, cwd);
1698 if (retval) {
1699 com_err(argv[0], retval, "while expanding directory");
1700 close(fd);
1701 return;
1702 }
1703 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1704 EXT2_FT_REG_FILE);
1705 }
1706 if (retval) {
1707 com_err(argv[2], retval, 0);
1708 close(fd);
1709 return;
1710 }
1711 if (ext2fs_test_inode_bitmap2(current_fs->inode_map,newfile))
1712 com_err(argv[0], 0, "Warning: inode already set");
1713 ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1714 memset(&inode, 0, sizeof(inode));
1715 inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
1716 inode.i_atime = inode.i_ctime = inode.i_mtime =
1717 current_fs->now ? current_fs->now : time(0);
1718 inode.i_links_count = 1;
1719 inode.i_size = statbuf.st_size;
1720 if (current_fs->super->s_feature_incompat &
1721 EXT3_FEATURE_INCOMPAT_EXTENTS) {
1722 int i;
1723 struct ext3_extent_header *eh;
1724
1725 eh = (struct ext3_extent_header *) &inode.i_block[0];
1726 eh->eh_depth = 0;
1727 eh->eh_entries = 0;
1728 eh->eh_magic = ext2fs_cpu_to_le16(EXT3_EXT_MAGIC);
1729 i = (sizeof(inode.i_block) - sizeof(*eh)) /
1730 sizeof(struct ext3_extent);
1731 eh->eh_max = ext2fs_cpu_to_le16(i);
1732 inode.i_flags |= EXT4_EXTENTS_FL;
1733 }
1734 if (debugfs_write_new_inode(newfile, &inode, argv[0])) {
1735 close(fd);
1736 return;
1737 }
1738 if (LINUX_S_ISREG(inode.i_mode)) {
1739 if (statbuf.st_blocks < statbuf.st_size / S_BLKSIZE) {
1740 make_holes = 1;
1741 /*
1742 * Use I/O blocksize as buffer size when
1743 * copying sparse files.
1744 */
1745 bufsize = statbuf.st_blksize;
1746 }
1747 retval = copy_file(fd, newfile, bufsize, make_holes);
1748 if (retval)
1749 com_err("copy_file", retval, 0);
1750 }
1751 close(fd);
1752 }
1753
do_mknod(int argc,char * argv[])1754 void do_mknod(int argc, char *argv[])
1755 {
1756 unsigned long mode, major, minor;
1757 ext2_ino_t newfile;
1758 errcode_t retval;
1759 struct ext2_inode inode;
1760 int filetype, nr;
1761
1762 if (check_fs_open(argv[0]))
1763 return;
1764 if (argc < 3 || argv[2][1]) {
1765 usage:
1766 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1767 return;
1768 }
1769 mode = minor = major = 0;
1770 switch (argv[2][0]) {
1771 case 'p':
1772 mode = LINUX_S_IFIFO;
1773 filetype = EXT2_FT_FIFO;
1774 nr = 3;
1775 break;
1776 case 'c':
1777 mode = LINUX_S_IFCHR;
1778 filetype = EXT2_FT_CHRDEV;
1779 nr = 5;
1780 break;
1781 case 'b':
1782 mode = LINUX_S_IFBLK;
1783 filetype = EXT2_FT_BLKDEV;
1784 nr = 5;
1785 break;
1786 default:
1787 filetype = 0;
1788 nr = 0;
1789 }
1790 if (nr == 5) {
1791 major = strtoul(argv[3], argv+3, 0);
1792 minor = strtoul(argv[4], argv+4, 0);
1793 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1794 nr = 0;
1795 }
1796 if (argc != nr)
1797 goto usage;
1798 if (check_fs_read_write(argv[0]))
1799 return;
1800 retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1801 if (retval) {
1802 com_err(argv[0], retval, 0);
1803 return;
1804 }
1805 printf("Allocated inode: %u\n", newfile);
1806 retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1807 if (retval == EXT2_ET_DIR_NO_SPACE) {
1808 retval = ext2fs_expand_dir(current_fs, cwd);
1809 if (retval) {
1810 com_err(argv[0], retval, "while expanding directory");
1811 return;
1812 }
1813 retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
1814 filetype);
1815 }
1816 if (retval) {
1817 com_err(argv[1], retval, 0);
1818 return;
1819 }
1820 if (ext2fs_test_inode_bitmap2(current_fs->inode_map,newfile))
1821 com_err(argv[0], 0, "Warning: inode already set");
1822 ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1823 memset(&inode, 0, sizeof(inode));
1824 inode.i_mode = mode;
1825 inode.i_atime = inode.i_ctime = inode.i_mtime =
1826 current_fs->now ? current_fs->now : time(0);
1827 if ((major < 256) && (minor < 256)) {
1828 inode.i_block[0] = major*256+minor;
1829 inode.i_block[1] = 0;
1830 } else {
1831 inode.i_block[0] = 0;
1832 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
1833 }
1834 inode.i_links_count = 1;
1835 if (debugfs_write_new_inode(newfile, &inode, argv[0]))
1836 return;
1837 }
1838
do_mkdir(int argc,char * argv[])1839 void do_mkdir(int argc, char *argv[])
1840 {
1841 char *cp;
1842 ext2_ino_t parent;
1843 char *name;
1844 errcode_t retval;
1845
1846 if (common_args_process(argc, argv, 2, 2, "mkdir",
1847 "<filename>", CHECK_FS_RW))
1848 return;
1849
1850 cp = strrchr(argv[1], '/');
1851 if (cp) {
1852 *cp = 0;
1853 parent = string_to_inode(argv[1]);
1854 if (!parent) {
1855 com_err(argv[1], ENOENT, 0);
1856 return;
1857 }
1858 name = cp+1;
1859 } else {
1860 parent = cwd;
1861 name = argv[1];
1862 }
1863
1864 try_again:
1865 retval = ext2fs_mkdir(current_fs, parent, 0, name);
1866 if (retval == EXT2_ET_DIR_NO_SPACE) {
1867 retval = ext2fs_expand_dir(current_fs, parent);
1868 if (retval) {
1869 com_err(argv[0], retval, "while expanding directory");
1870 return;
1871 }
1872 goto try_again;
1873 }
1874 if (retval) {
1875 com_err("ext2fs_mkdir", retval, 0);
1876 return;
1877 }
1878
1879 }
1880
release_blocks_proc(ext2_filsys fs,blk64_t * blocknr,e2_blkcnt_t blockcnt EXT2FS_ATTR ((unused)),blk64_t ref_block EXT2FS_ATTR ((unused)),int ref_offset EXT2FS_ATTR ((unused)),void * private EXT2FS_ATTR ((unused)))1881 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1882 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1883 blk64_t ref_block EXT2FS_ATTR((unused)),
1884 int ref_offset EXT2FS_ATTR((unused)),
1885 void *private EXT2FS_ATTR((unused)))
1886 {
1887 blk64_t block;
1888
1889 block = *blocknr;
1890 ext2fs_block_alloc_stats2(fs, block, -1);
1891 return 0;
1892 }
1893
kill_file_by_inode(ext2_ino_t inode)1894 static void kill_file_by_inode(ext2_ino_t inode)
1895 {
1896 struct ext2_inode inode_buf;
1897
1898 if (debugfs_read_inode(inode, &inode_buf, 0))
1899 return;
1900 inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1901 if (debugfs_write_inode(inode, &inode_buf, 0))
1902 return;
1903 if (!ext2fs_inode_has_valid_blocks2(current_fs, &inode_buf))
1904 return;
1905
1906 ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
1907 release_blocks_proc, NULL);
1908 printf("\n");
1909 ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1910 LINUX_S_ISDIR(inode_buf.i_mode));
1911 }
1912
1913
do_kill_file(int argc,char * argv[])1914 void do_kill_file(int argc, char *argv[])
1915 {
1916 ext2_ino_t inode_num;
1917
1918 if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1919 return;
1920
1921 kill_file_by_inode(inode_num);
1922 }
1923
do_rm(int argc,char * argv[])1924 void do_rm(int argc, char *argv[])
1925 {
1926 int retval;
1927 ext2_ino_t inode_num;
1928 struct ext2_inode inode;
1929
1930 if (common_args_process(argc, argv, 2, 2, "rm",
1931 "<filename>", CHECK_FS_RW))
1932 return;
1933
1934 retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1935 if (retval) {
1936 com_err(argv[0], retval, "while trying to resolve filename");
1937 return;
1938 }
1939
1940 if (debugfs_read_inode(inode_num, &inode, argv[0]))
1941 return;
1942
1943 if (LINUX_S_ISDIR(inode.i_mode)) {
1944 com_err(argv[0], 0, "file is a directory");
1945 return;
1946 }
1947
1948 --inode.i_links_count;
1949 if (debugfs_write_inode(inode_num, &inode, argv[0]))
1950 return;
1951
1952 unlink_file_by_name(argv[1]);
1953 if (inode.i_links_count == 0)
1954 kill_file_by_inode(inode_num);
1955 }
1956
1957 struct rd_struct {
1958 ext2_ino_t parent;
1959 int empty;
1960 };
1961
rmdir_proc(ext2_ino_t dir EXT2FS_ATTR ((unused)),int entry EXT2FS_ATTR ((unused)),struct ext2_dir_entry * dirent,int offset EXT2FS_ATTR ((unused)),int blocksize EXT2FS_ATTR ((unused)),char * buf EXT2FS_ATTR ((unused)),void * private)1962 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1963 int entry EXT2FS_ATTR((unused)),
1964 struct ext2_dir_entry *dirent,
1965 int offset EXT2FS_ATTR((unused)),
1966 int blocksize EXT2FS_ATTR((unused)),
1967 char *buf EXT2FS_ATTR((unused)),
1968 void *private)
1969 {
1970 struct rd_struct *rds = (struct rd_struct *) private;
1971
1972 if (dirent->inode == 0)
1973 return 0;
1974 if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1975 return 0;
1976 if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1977 (dirent->name[1] == '.')) {
1978 rds->parent = dirent->inode;
1979 return 0;
1980 }
1981 rds->empty = 0;
1982 return 0;
1983 }
1984
do_rmdir(int argc,char * argv[])1985 void do_rmdir(int argc, char *argv[])
1986 {
1987 int retval;
1988 ext2_ino_t inode_num;
1989 struct ext2_inode inode;
1990 struct rd_struct rds;
1991
1992 if (common_args_process(argc, argv, 2, 2, "rmdir",
1993 "<filename>", CHECK_FS_RW))
1994 return;
1995
1996 retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1997 if (retval) {
1998 com_err(argv[0], retval, "while trying to resolve filename");
1999 return;
2000 }
2001
2002 if (debugfs_read_inode(inode_num, &inode, argv[0]))
2003 return;
2004
2005 if (!LINUX_S_ISDIR(inode.i_mode)) {
2006 com_err(argv[0], 0, "file is not a directory");
2007 return;
2008 }
2009
2010 rds.parent = 0;
2011 rds.empty = 1;
2012
2013 retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
2014 0, rmdir_proc, &rds);
2015 if (retval) {
2016 com_err(argv[0], retval, "while iterating over directory");
2017 return;
2018 }
2019 if (rds.empty == 0) {
2020 com_err(argv[0], 0, "directory not empty");
2021 return;
2022 }
2023
2024 inode.i_links_count = 0;
2025 if (debugfs_write_inode(inode_num, &inode, argv[0]))
2026 return;
2027
2028 unlink_file_by_name(argv[1]);
2029 kill_file_by_inode(inode_num);
2030
2031 if (rds.parent) {
2032 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
2033 return;
2034 if (inode.i_links_count > 1)
2035 inode.i_links_count--;
2036 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
2037 return;
2038 }
2039 }
2040 #endif /* READ_ONLY */
2041
do_show_debugfs_params(int argc EXT2FS_ATTR ((unused)),char * argv[]EXT2FS_ATTR ((unused)))2042 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
2043 char *argv[] EXT2FS_ATTR((unused)))
2044 {
2045 if (current_fs)
2046 printf("Open mode: read-%s\n",
2047 current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
2048 printf("Filesystem in use: %s\n",
2049 current_fs ? current_fs->device_name : "--none--");
2050 }
2051
2052 #ifndef READ_ONLY
do_expand_dir(int argc,char * argv[])2053 void do_expand_dir(int argc, char *argv[])
2054 {
2055 ext2_ino_t inode;
2056 int retval;
2057
2058 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
2059 return;
2060
2061 retval = ext2fs_expand_dir(current_fs, inode);
2062 if (retval)
2063 com_err("ext2fs_expand_dir", retval, 0);
2064 return;
2065 }
2066
do_features(int argc,char * argv[])2067 void do_features(int argc, char *argv[])
2068 {
2069 int i;
2070
2071 if (check_fs_open(argv[0]))
2072 return;
2073
2074 if ((argc != 1) && check_fs_read_write(argv[0]))
2075 return;
2076 for (i=1; i < argc; i++) {
2077 if (e2p_edit_feature(argv[i],
2078 ¤t_fs->super->s_feature_compat, 0))
2079 com_err(argv[0], 0, "Unknown feature: %s\n",
2080 argv[i]);
2081 else
2082 ext2fs_mark_super_dirty(current_fs);
2083 }
2084 print_features(current_fs->super, stdout);
2085 }
2086 #endif /* READ_ONLY */
2087
do_bmap(int argc,char * argv[])2088 void do_bmap(int argc, char *argv[])
2089 {
2090 ext2_ino_t ino;
2091 blk64_t blk, pblk;
2092 int err;
2093 errcode_t errcode;
2094
2095 if (common_args_process(argc, argv, 3, 3, argv[0],
2096 "<file> logical_blk", 0))
2097 return;
2098
2099 ino = string_to_inode(argv[1]);
2100 if (!ino)
2101 return;
2102 err = strtoblk(argv[0], argv[2], &blk);
2103 if (err)
2104 return;
2105
2106 errcode = ext2fs_bmap2(current_fs, ino, 0, 0, 0, blk, 0, &pblk);
2107 if (errcode) {
2108 com_err(argv[0], errcode,
2109 "while mapping logical block %llu\n", blk);
2110 return;
2111 }
2112 printf("%llu\n", pblk);
2113 }
2114
do_imap(int argc,char * argv[])2115 void do_imap(int argc, char *argv[])
2116 {
2117 ext2_ino_t ino;
2118 unsigned long group, block, block_nr, offset;
2119
2120 if (common_args_process(argc, argv, 2, 2, argv[0],
2121 "<file>", 0))
2122 return;
2123 ino = string_to_inode(argv[1]);
2124 if (!ino)
2125 return;
2126
2127 group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
2128 offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
2129 EXT2_INODE_SIZE(current_fs->super);
2130 block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
2131 if (!ext2fs_inode_table_loc(current_fs, (unsigned)group)) {
2132 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
2133 group);
2134 return;
2135 }
2136 block_nr = ext2fs_inode_table_loc(current_fs, (unsigned)group) +
2137 block;
2138 offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
2139
2140 printf("Inode %d is part of block group %lu\n"
2141 "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
2142 block_nr, offset);
2143
2144 }
2145
2146 #ifndef READ_ONLY
do_set_current_time(int argc,char * argv[])2147 void do_set_current_time(int argc, char *argv[])
2148 {
2149 time_t now;
2150
2151 if (common_args_process(argc, argv, 2, 2, argv[0],
2152 "<time>", 0))
2153 return;
2154
2155 now = string_to_time(argv[1]);
2156 if (now == ((time_t) -1)) {
2157 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
2158 argv[1]);
2159 return;
2160
2161 } else {
2162 printf("Setting current time to %s\n", time_to_string(now));
2163 current_fs->now = now;
2164 }
2165 }
2166 #endif /* READ_ONLY */
2167
find_supp_feature(__u32 * supp,int feature_type,char * name)2168 static int find_supp_feature(__u32 *supp, int feature_type, char *name)
2169 {
2170 int compat, bit, ret;
2171 unsigned int feature_mask;
2172
2173 if (name) {
2174 if (feature_type == E2P_FS_FEATURE)
2175 ret = e2p_string2feature(name, &compat, &feature_mask);
2176 else
2177 ret = e2p_jrnl_string2feature(name, &compat,
2178 &feature_mask);
2179 if (ret)
2180 return ret;
2181
2182 if (!(supp[compat] & feature_mask))
2183 return 1;
2184 } else {
2185 for (compat = 0; compat < 3; compat++) {
2186 for (bit = 0, feature_mask = 1; bit < 32;
2187 bit++, feature_mask <<= 1) {
2188 if (supp[compat] & feature_mask) {
2189 if (feature_type == E2P_FS_FEATURE)
2190 fprintf(stdout, " %s",
2191 e2p_feature2string(compat,
2192 feature_mask));
2193 else
2194 fprintf(stdout, " %s",
2195 e2p_jrnl_feature2string(compat,
2196 feature_mask));
2197 }
2198 }
2199 }
2200 fprintf(stdout, "\n");
2201 }
2202
2203 return 0;
2204 }
2205
do_supported_features(int argc,char * argv[])2206 void do_supported_features(int argc, char *argv[])
2207 {
2208 int ret;
2209 __u32 supp[3] = { EXT2_LIB_FEATURE_COMPAT_SUPP,
2210 EXT2_LIB_FEATURE_INCOMPAT_SUPP,
2211 EXT2_LIB_FEATURE_RO_COMPAT_SUPP };
2212 __u32 jrnl_supp[3] = { JFS_KNOWN_COMPAT_FEATURES,
2213 JFS_KNOWN_INCOMPAT_FEATURES,
2214 JFS_KNOWN_ROCOMPAT_FEATURES };
2215
2216 if (argc > 1) {
2217 ret = find_supp_feature(supp, E2P_FS_FEATURE, argv[1]);
2218 if (ret) {
2219 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE,
2220 argv[1]);
2221 }
2222 if (ret)
2223 com_err(argv[0], 0, "Unknown feature: %s\n", argv[1]);
2224 else
2225 fprintf(stdout, "Supported feature: %s\n", argv[1]);
2226 } else {
2227 fprintf(stdout, "Supported features:");
2228 ret = find_supp_feature(supp, E2P_FS_FEATURE, NULL);
2229 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE, NULL);
2230 }
2231 }
2232
2233 #ifndef READ_ONLY
do_punch(int argc,char * argv[])2234 void do_punch(int argc, char *argv[])
2235 {
2236 ext2_ino_t ino;
2237 blk64_t start, end;
2238 int err;
2239 errcode_t errcode;
2240
2241 if (common_args_process(argc, argv, 3, 4, argv[0],
2242 "<file> start_blk [end_blk]",
2243 CHECK_FS_RW | CHECK_FS_BITMAPS))
2244 return;
2245
2246 ino = string_to_inode(argv[1]);
2247 if (!ino)
2248 return;
2249 err = strtoblk(argv[0], argv[2], &start);
2250 if (err)
2251 return;
2252 if (argc == 4) {
2253 err = strtoblk(argv[0], argv[3], &end);
2254 if (err)
2255 return;
2256 } else
2257 end = ~0;
2258
2259 errcode = ext2fs_punch(current_fs, ino, 0, 0, start, end);
2260
2261 if (errcode) {
2262 com_err(argv[0], errcode,
2263 "while truncating inode %u from %llu to %llu\n", ino,
2264 (unsigned long long) start, (unsigned long long) end);
2265 return;
2266 }
2267 }
2268 #endif /* READ_ONLY */
2269
do_symlink(int argc,char * argv[])2270 void do_symlink(int argc, char *argv[])
2271 {
2272 char *cp;
2273 ext2_ino_t parent;
2274 char *name, *target;
2275 errcode_t retval;
2276
2277 if (common_args_process(argc, argv, 3, 3, "symlink",
2278 "<filename> <target>", CHECK_FS_RW))
2279 return;
2280
2281 cp = strrchr(argv[1], '/');
2282 if (cp) {
2283 *cp = 0;
2284 parent = string_to_inode(argv[1]);
2285 if (!parent) {
2286 com_err(argv[1], ENOENT, 0);
2287 return;
2288 }
2289 name = cp+1;
2290 } else {
2291 parent = cwd;
2292 name = argv[1];
2293 }
2294 target = argv[2];
2295
2296 try_again:
2297 retval = ext2fs_symlink(current_fs, parent, 0, name, target);
2298 if (retval == EXT2_ET_DIR_NO_SPACE) {
2299 retval = ext2fs_expand_dir(current_fs, parent);
2300 if (retval) {
2301 com_err(argv[0], retval, "while expanding directory");
2302 return;
2303 }
2304 goto try_again;
2305 }
2306 if (retval) {
2307 com_err("ext2fs_symlink", retval, 0);
2308 return;
2309 }
2310
2311 }
2312
do_dump_mmp(int argc EXT2FS_ATTR ((unused)),char * argv[])2313 void do_dump_mmp(int argc EXT2FS_ATTR((unused)), char *argv[])
2314 {
2315 struct ext2_super_block *sb;
2316 struct mmp_struct *mmp_s;
2317 time_t t;
2318 errcode_t retval = 0;
2319
2320 if (check_fs_open(argv[0]))
2321 return;
2322
2323 sb = current_fs->super;
2324
2325 if (current_fs->mmp_buf == NULL) {
2326 retval = ext2fs_get_mem(current_fs->blocksize,
2327 ¤t_fs->mmp_buf);
2328 if (retval) {
2329 com_err(argv[0], retval, "allocating MMP buffer.\n");
2330 return;
2331 }
2332 }
2333
2334 mmp_s = current_fs->mmp_buf;
2335
2336 retval = ext2fs_mmp_read(current_fs, current_fs->super->s_mmp_block,
2337 current_fs->mmp_buf);
2338 if (retval) {
2339 com_err(argv[0], retval, "reading MMP block.\n");
2340 return;
2341 }
2342
2343 t = mmp_s->mmp_time;
2344 fprintf(stdout, "block_number: %llu\n", current_fs->super->s_mmp_block);
2345 fprintf(stdout, "update_interval: %d\n",
2346 current_fs->super->s_mmp_update_interval);
2347 fprintf(stdout, "check_interval: %d\n", mmp_s->mmp_check_interval);
2348 fprintf(stdout, "sequence: %08x\n", mmp_s->mmp_seq);
2349 fprintf(stdout, "time: %lld -- %s", mmp_s->mmp_time, ctime(&t));
2350 fprintf(stdout, "node_name: %s\n", mmp_s->mmp_nodename);
2351 fprintf(stdout, "device_name: %s\n", mmp_s->mmp_bdevname);
2352 fprintf(stdout, "magic: 0x%x\n", mmp_s->mmp_magic);
2353 }
2354
source_file(const char * cmd_file,int ss_idx)2355 static int source_file(const char *cmd_file, int ss_idx)
2356 {
2357 FILE *f;
2358 char buf[BUFSIZ];
2359 char *cp;
2360 int exit_status = 0;
2361 int retval;
2362
2363 if (strcmp(cmd_file, "-") == 0)
2364 f = stdin;
2365 else {
2366 f = fopen(cmd_file, "r");
2367 if (!f) {
2368 perror(cmd_file);
2369 exit(1);
2370 }
2371 }
2372 fflush(stdout);
2373 fflush(stderr);
2374 setbuf(stdout, NULL);
2375 setbuf(stderr, NULL);
2376 while (!feof(f)) {
2377 if (fgets(buf, sizeof(buf), f) == NULL)
2378 break;
2379 cp = strchr(buf, '\n');
2380 if (cp)
2381 *cp = 0;
2382 cp = strchr(buf, '\r');
2383 if (cp)
2384 *cp = 0;
2385 printf("debugfs: %s\n", buf);
2386 retval = ss_execute_line(ss_idx, buf);
2387 if (retval) {
2388 ss_perror(ss_idx, retval, buf);
2389 exit_status++;
2390 }
2391 }
2392 if (f != stdin)
2393 fclose(f);
2394 return exit_status;
2395 }
2396
main(int argc,char ** argv)2397 int main(int argc, char **argv)
2398 {
2399 int retval;
2400 const char *usage =
2401 "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] "
2402 "[-R request] [-V] ["
2403 #ifndef READ_ONLY
2404 "[-w] "
2405 #endif
2406 "[-c] device]";
2407 int c;
2408 int open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
2409 char *request = 0;
2410 int exit_status = 0;
2411 char *cmd_file = 0;
2412 blk64_t superblock = 0;
2413 blk64_t blocksize = 0;
2414 int catastrophic = 0;
2415 char *data_filename = 0;
2416 #ifdef READ_ONLY
2417 const char *opt_string = "icR:f:b:s:Vd:D";
2418 #else
2419 const char *opt_string = "iwcR:f:b:s:Vd:D";
2420 #endif
2421
2422 if (debug_prog_name == 0)
2423 #ifdef READ_ONLY
2424 debug_prog_name = "rdebugfs";
2425 #else
2426 debug_prog_name = "debugfs";
2427 #endif
2428 add_error_table(&et_ext2_error_table);
2429 fprintf (stderr, "%s %s (%s)\n", debug_prog_name,
2430 E2FSPROGS_VERSION, E2FSPROGS_DATE);
2431
2432 while ((c = getopt (argc, argv, opt_string)) != EOF) {
2433 switch (c) {
2434 case 'R':
2435 request = optarg;
2436 break;
2437 case 'f':
2438 cmd_file = optarg;
2439 break;
2440 case 'd':
2441 data_filename = optarg;
2442 break;
2443 case 'i':
2444 open_flags |= EXT2_FLAG_IMAGE_FILE;
2445 break;
2446 #ifndef READ_ONLY
2447 case 'w':
2448 open_flags |= EXT2_FLAG_RW;
2449 break;
2450 #endif
2451 case 'D':
2452 open_flags |= EXT2_FLAG_DIRECT_IO;
2453 break;
2454 case 'b':
2455 blocksize = parse_ulong(optarg, argv[0],
2456 "block size", 0);
2457 break;
2458 case 's':
2459 retval = strtoblk(argv[0], optarg, &superblock);
2460 if (retval)
2461 return 1;
2462 break;
2463 case 'c':
2464 catastrophic = 1;
2465 break;
2466 case 'V':
2467 /* Print version number and exit */
2468 fprintf(stderr, "\tUsing %s\n",
2469 error_message(EXT2_ET_BASE));
2470 exit(0);
2471 default:
2472 com_err(argv[0], 0, usage, debug_prog_name);
2473 return 1;
2474 }
2475 }
2476 if (optind < argc)
2477 open_filesystem(argv[optind], open_flags,
2478 superblock, blocksize, catastrophic,
2479 data_filename);
2480
2481 sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL,
2482 &debug_cmds, &retval);
2483 if (retval) {
2484 ss_perror(sci_idx, retval, "creating invocation");
2485 exit(1);
2486 }
2487 ss_get_readline(sci_idx);
2488
2489 (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
2490 if (retval) {
2491 ss_perror(sci_idx, retval, "adding standard requests");
2492 exit (1);
2493 }
2494 if (extra_cmds)
2495 ss_add_request_table (sci_idx, extra_cmds, 1, &retval);
2496 if (retval) {
2497 ss_perror(sci_idx, retval, "adding extra requests");
2498 exit (1);
2499 }
2500 if (request) {
2501 retval = 0;
2502 retval = ss_execute_line(sci_idx, request);
2503 if (retval) {
2504 ss_perror(sci_idx, retval, request);
2505 exit_status++;
2506 }
2507 } else if (cmd_file) {
2508 exit_status = source_file(cmd_file, sci_idx);
2509 } else {
2510 ss_listen(sci_idx);
2511 }
2512
2513 ss_delete_invocation(sci_idx);
2514
2515 if (current_fs)
2516 close_filesystem();
2517
2518 remove_error_table(&et_ext2_error_table);
2519 return exit_status;
2520 }
2521