2 * debugfs.c --- a program which allows you to attach an ext2fs
3 * filesystem and play with it.
5 * Copyright (C) 1993 Theodore Ts'o. This file may be redistributed
6 * under the terms of the GNU Public License.
8 * Modifications by Robert Sanders <gt8134b@prism.gatech.edu>
27 #include <sys/types.h>
30 #include "et/com_err.h"
33 #include "uuid/uuid.h"
36 #include "../version.h"
38 extern ss_request_table debug_cmds
;
40 ext2_filsys current_fs
= NULL
;
43 static void open_filesystem(char *device
, int open_flags
, blk_t superblock
,
44 blk_t blocksize
, int catastrophic
)
48 if (superblock
!= 0 && blocksize
== 0) {
49 com_err(device
, 0, "if you specify the superblock, you must also specify the block size");
54 if (catastrophic
&& (open_flags
& EXT2_FLAG_RW
)) {
56 "opening read-only because of catastrophic mode");
57 open_flags
&= ~EXT2_FLAG_RW
;
60 retval
= ext2fs_open(device
, open_flags
, superblock
, blocksize
,
61 unix_io_manager
, ¤t_fs
);
63 com_err(device
, retval
, "while opening filesystem");
69 com_err(device
, 0, "catastrophic mode - not reading inode or group bitmaps");
71 retval
= ext2fs_read_inode_bitmap(current_fs
);
73 com_err(device
, retval
, "while reading inode bitmap");
76 retval
= ext2fs_read_block_bitmap(current_fs
);
78 com_err(device
, retval
, "while reading block bitmap");
82 root
= cwd
= EXT2_ROOT_INO
;
86 retval
= ext2fs_close(current_fs
);
88 com_err(device
, retval
, "while trying to close filesystem");
92 void do_open_filesys(int argc
, char **argv
)
94 const char *usage
= "Usage: open [-s superblock] [-b blocksize] [-c] [-w] <device>";
102 while ((c
= getopt (argc
, argv
, "iwfcb:s:")) != EOF
) {
105 open_flags
|= EXT2_FLAG_IMAGE_FILE
;
108 open_flags
|= EXT2_FLAG_RW
;
111 open_flags
|= EXT2_FLAG_FORCE
;
117 blocksize
= parse_ulong(optarg
, argv
[0],
123 superblock
= parse_ulong(optarg
, argv
[0],
124 "superblock number", &err
);
129 com_err(argv
[0], 0, usage
);
133 if (optind
!= argc
-1) {
134 com_err(argv
[0], 0, usage
);
137 if (check_fs_not_open(argv
[0]))
139 open_filesystem(argv
[optind
], open_flags
,
140 superblock
, blocksize
, catastrophic
);
143 void do_lcd(int argc
, char **argv
)
145 if (common_args_process(argc
, argv
, 2, 2, "lcd",
149 if (chdir(argv
[1]) == -1) {
150 com_err(argv
[0], errno
,
151 "while trying to change native directory to %s",
157 static void close_filesystem(NOARGS
)
161 if (current_fs
->flags
& EXT2_FLAG_IB_DIRTY
) {
162 retval
= ext2fs_write_inode_bitmap(current_fs
);
164 com_err("ext2fs_write_inode_bitmap", retval
, "");
166 if (current_fs
->flags
& EXT2_FLAG_BB_DIRTY
) {
167 retval
= ext2fs_write_block_bitmap(current_fs
);
169 com_err("ext2fs_write_block_bitmap", retval
, "");
171 retval
= ext2fs_close(current_fs
);
173 com_err("ext2fs_close", retval
, "");
178 void do_close_filesys(int argc
, char **argv
)
180 if (common_args_process(argc
, argv
, 1, 1, "close_filesys", "", 0))
185 void do_init_filesys(int argc
, char **argv
)
187 struct ext2_super_block param
;
191 if (common_args_process(argc
, argv
, 3, 3, "initialize",
192 "<device> <blocksize>", CHECK_FS_NOTOPEN
))
195 memset(¶m
, 0, sizeof(struct ext2_super_block
));
196 param
.s_blocks_count
= parse_ulong(argv
[2], argv
[0],
197 "blocks count", &err
);
200 retval
= ext2fs_initialize(argv
[1], 0, ¶m
,
201 unix_io_manager
, ¤t_fs
);
203 com_err(argv
[1], retval
, "while initializing filesystem");
207 root
= cwd
= EXT2_ROOT_INO
;
211 static void print_features(struct ext2_super_block
* s
, FILE *f
)
214 __u32
*mask
= &s
->s_feature_compat
, m
;
216 fputs("Filesystem features:", f
);
217 for (i
=0; i
<3; i
++,mask
++) {
218 for (j
=0,m
=1; j
< 32; j
++, m
<<=1) {
220 fprintf(f
, " %s", e2p_feature2string(i
, m
));
230 void do_show_super_stats(int argc
, char *argv
[])
234 struct ext2_group_desc
*gdp
;
235 int c
, header_only
= 0;
237 const char *usage
= "Usage: show_super [-h]";
240 while ((c
= getopt (argc
, argv
, "h")) != EOF
) {
246 com_err(argv
[0], 0, usage
);
250 if (optind
!= argc
) {
251 com_err(argv
[0], 0, usage
);
254 if (check_fs_open(argv
[0]))
258 list_super2(current_fs
->super
, out
);
259 for (i
=0; i
< current_fs
->group_desc_count
; i
++)
260 numdirs
+= current_fs
->group_desc
[i
].bg_used_dirs_count
;
261 fprintf(out
, "Directories: %d\n", numdirs
);
268 gdp
= ¤t_fs
->group_desc
[0];
269 for (i
= 0; i
< current_fs
->group_desc_count
; i
++, gdp
++)
270 fprintf(out
, " Group %2d: block bitmap at %d, "
271 "inode bitmap at %d, "
272 "inode table at %d\n"
276 i
, gdp
->bg_block_bitmap
,
277 gdp
->bg_inode_bitmap
, gdp
->bg_inode_table
,
278 gdp
->bg_free_blocks_count
,
279 gdp
->bg_free_blocks_count
!= 1 ? "blocks" : "block",
280 gdp
->bg_free_inodes_count
,
281 gdp
->bg_free_inodes_count
!= 1 ? "inodes" : "inode",
282 gdp
->bg_used_dirs_count
,
283 gdp
->bg_used_dirs_count
!= 1 ? "directories"
288 void do_dirty_filesys(int argc
EXT2FS_ATTR((unused
)),
289 char **argv
EXT2FS_ATTR((unused
)))
291 if (check_fs_open(argv
[0]))
293 if (check_fs_read_write(argv
[0]))
296 if (argv
[1] && !strcmp(argv
[1], "-clean"))
297 current_fs
->super
->s_state
|= EXT2_VALID_FS
;
299 current_fs
->super
->s_state
&= ~EXT2_VALID_FS
;
300 ext2fs_mark_super_dirty(current_fs
);
303 struct list_blocks_struct
{
306 blk_t first_block
, last_block
;
307 e2_blkcnt_t first_bcnt
, last_bcnt
;
311 static void finish_range(struct list_blocks_struct
*lb
)
313 if (lb
->first_block
== 0)
318 fprintf(lb
->f
, ", ");
319 if (lb
->first_block
== lb
->last_block
)
320 fprintf(lb
->f
, "(%lld):%d", lb
->first_bcnt
, lb
->first_block
);
322 fprintf(lb
->f
, "(%lld-%lld):%d-%d", lb
->first_bcnt
,
323 lb
->last_bcnt
, lb
->first_block
, lb
->last_block
);
327 static int list_blocks_proc(ext2_filsys fs
EXT2FS_ATTR((unused
)),
328 blk_t
*blocknr
, e2_blkcnt_t blockcnt
,
329 blk_t ref_block
EXT2FS_ATTR((unused
)),
330 int ref_offset
EXT2FS_ATTR((unused
)),
333 struct list_blocks_struct
*lb
= (struct list_blocks_struct
*) private;
338 * See if we can add on to the existing range (if it exists)
340 if (lb
->first_block
&&
341 (lb
->last_block
+1 == *blocknr
) &&
342 (lb
->last_bcnt
+1 == blockcnt
)) {
343 lb
->last_block
= *blocknr
;
344 lb
->last_bcnt
= blockcnt
;
351 lb
->first_block
= lb
->last_block
= *blocknr
;
352 lb
->first_bcnt
= lb
->last_bcnt
= blockcnt
;
356 * Not a normal block. Always force a new range.
362 fprintf(lb
->f
, ", ");
364 fprintf(lb
->f
, "(IND):%d", *blocknr
);
365 else if (blockcnt
== -2)
366 fprintf(lb
->f
, "(DIND):%d", *blocknr
);
367 else if (blockcnt
== -3)
368 fprintf(lb
->f
, "(TIND):%d", *blocknr
);
373 static void dump_blocks(FILE *f
, const char *prefix
, ext2_ino_t inode
)
375 struct list_blocks_struct lb
;
377 fprintf(f
, "%sBLOCKS:\n%s", prefix
, prefix
);
382 ext2fs_block_iterate2(current_fs
, inode
, 0, NULL
,
383 list_blocks_proc
, (void *)&lb
);
386 fprintf(f
, "\n%sTOTAL: %lld\n", prefix
, lb
.total
);
391 void internal_dump_inode(FILE *out
, const char *prefix
,
392 ext2_ino_t inode_num
, struct ext2_inode
*inode
,
397 int os
= current_fs
->super
->s_creator_os
;
399 if (LINUX_S_ISDIR(inode
->i_mode
)) i_type
= "directory";
400 else if (LINUX_S_ISREG(inode
->i_mode
)) i_type
= "regular";
401 else if (LINUX_S_ISLNK(inode
->i_mode
)) i_type
= "symlink";
402 else if (LINUX_S_ISBLK(inode
->i_mode
)) i_type
= "block special";
403 else if (LINUX_S_ISCHR(inode
->i_mode
)) i_type
= "character special";
404 else if (LINUX_S_ISFIFO(inode
->i_mode
)) i_type
= "FIFO";
405 else if (LINUX_S_ISSOCK(inode
->i_mode
)) i_type
= "socket";
406 else i_type
= "bad type";
407 fprintf(out
, "%sInode: %u Type: %s ", prefix
, inode_num
, i_type
);
408 fprintf(out
, "%sMode: %04o Flags: 0x%x Generation: %u\n",
410 inode
->i_mode
& 0777, inode
->i_flags
, inode
->i_generation
);
411 fprintf(out
, "%sUser: %5d Group: %5d Size: ",
412 prefix
, inode
->i_uid
, inode
->i_gid
);
413 if (LINUX_S_ISREG(inode
->i_mode
)) {
414 __u64 i_size
= (inode
->i_size
|
415 ((unsigned long long)inode
->i_size_high
<< 32));
417 fprintf(out
, "%lld\n", i_size
);
419 fprintf(out
, "%d\n", inode
->i_size
);
420 if (current_fs
->super
->s_creator_os
== EXT2_OS_HURD
)
422 "%sFile ACL: %d Directory ACL: %d Translator: %d\n",
424 inode
->i_file_acl
, LINUX_S_ISDIR(inode
->i_mode
) ? inode
->i_dir_acl
: 0,
425 inode
->osd1
.hurd1
.h_i_translator
);
427 fprintf(out
, "%sFile ACL: %d Directory ACL: %d\n",
429 inode
->i_file_acl
, LINUX_S_ISDIR(inode
->i_mode
) ? inode
->i_dir_acl
: 0);
430 fprintf(out
, "%sLinks: %d Blockcount: %d\n",
431 prefix
, inode
->i_links_count
, inode
->i_blocks
);
434 frag
= inode
->osd2
.linux2
.l_i_frag
;
435 fsize
= inode
->osd2
.linux2
.l_i_fsize
;
438 frag
= inode
->osd2
.hurd2
.h_i_frag
;
439 fsize
= inode
->osd2
.hurd2
.h_i_fsize
;
442 frag
= inode
->osd2
.masix2
.m_i_frag
;
443 fsize
= inode
->osd2
.masix2
.m_i_fsize
;
448 fprintf(out
, "%sFragment: Address: %d Number: %d Size: %d\n",
449 prefix
, inode
->i_faddr
, frag
, fsize
);
450 fprintf(out
, "%sctime: 0x%08x -- %s", prefix
, inode
->i_ctime
,
451 time_to_string(inode
->i_ctime
));
452 fprintf(out
, "%satime: 0x%08x -- %s", prefix
, inode
->i_atime
,
453 time_to_string(inode
->i_atime
));
454 fprintf(out
, "%smtime: 0x%08x -- %s", prefix
, inode
->i_mtime
,
455 time_to_string(inode
->i_mtime
));
457 fprintf(out
, "%sdtime: 0x%08x -- %s", prefix
, inode
->i_dtime
,
458 time_to_string(inode
->i_dtime
));
459 if (LINUX_S_ISLNK(inode
->i_mode
) && ext2fs_inode_data_blocks(current_fs
,inode
) == 0)
460 fprintf(out
, "%sFast_link_dest: %.*s\n", prefix
,
461 (int) inode
->i_size
, (char *)inode
->i_block
);
462 else if (LINUX_S_ISBLK(inode
->i_mode
) || LINUX_S_ISCHR(inode
->i_mode
)) {
466 if (inode
->i_block
[0]) {
467 major
= (inode
->i_block
[0] >> 8) & 255;
468 minor
= inode
->i_block
[0] & 255;
471 major
= (inode
->i_block
[1] & 0xfff00) >> 8;
472 minor
= ((inode
->i_block
[1] & 0xff) |
473 ((inode
->i_block
[1] >> 12) & 0xfff00));
474 devnote
= "(New-style) ";
476 fprintf(out
, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
477 devnote
, major
, minor
, major
, minor
);
479 else if (do_dump_blocks
)
480 dump_blocks(out
, prefix
, inode_num
);
483 static void dump_inode(ext2_ino_t inode_num
, struct ext2_inode inode
)
488 internal_dump_inode(out
, "", inode_num
, &inode
, 1);
492 void do_stat(int argc
, char *argv
[])
495 struct ext2_inode inode_buf
;
497 if (common_inode_args_process(argc
, argv
, &inode
, 0))
500 if (debugfs_read_inode(inode
, &inode_buf
, argv
[0]))
503 dump_inode(inode
,inode_buf
);
507 void do_chroot(int argc
, char *argv
[])
512 if (common_inode_args_process(argc
, argv
, &inode
, 0))
515 retval
= ext2fs_check_directory(current_fs
, inode
);
517 com_err(argv
[1], retval
, "");
523 void do_clri(int argc
, char *argv
[])
526 struct ext2_inode inode_buf
;
528 if (common_inode_args_process(argc
, argv
, &inode
, CHECK_FS_RW
))
531 if (debugfs_read_inode(inode
, &inode_buf
, argv
[0]))
533 memset(&inode_buf
, 0, sizeof(inode_buf
));
534 if (debugfs_write_inode(inode
, &inode_buf
, argv
[0]))
538 void do_freei(int argc
, char *argv
[])
542 if (common_inode_args_process(argc
, argv
, &inode
,
543 CHECK_FS_RW
| CHECK_FS_BITMAPS
))
546 if (!ext2fs_test_inode_bitmap(current_fs
->inode_map
,inode
))
547 com_err(argv
[0], 0, "Warning: inode already clear");
548 ext2fs_unmark_inode_bitmap(current_fs
->inode_map
,inode
);
549 ext2fs_mark_ib_dirty(current_fs
);
552 void do_seti(int argc
, char *argv
[])
556 if (common_inode_args_process(argc
, argv
, &inode
,
557 CHECK_FS_RW
| CHECK_FS_BITMAPS
))
560 if (ext2fs_test_inode_bitmap(current_fs
->inode_map
,inode
))
561 com_err(argv
[0], 0, "Warning: inode already set");
562 ext2fs_mark_inode_bitmap(current_fs
->inode_map
,inode
);
563 ext2fs_mark_ib_dirty(current_fs
);
566 void do_testi(int argc
, char *argv
[])
570 if (common_inode_args_process(argc
, argv
, &inode
, CHECK_FS_BITMAPS
))
573 if (ext2fs_test_inode_bitmap(current_fs
->inode_map
,inode
))
574 printf("Inode %u is marked in use\n", inode
);
576 printf("Inode %u is not in use\n", inode
);
579 void do_freeb(int argc
, char *argv
[])
584 if (common_block_args_process(argc
, argv
, &block
, &count
))
586 if (check_fs_read_write(argv
[0]))
588 while (count
-- > 0) {
589 if (!ext2fs_test_block_bitmap(current_fs
->block_map
,block
))
590 com_err(argv
[0], 0, "Warning: block %d already clear",
592 ext2fs_unmark_block_bitmap(current_fs
->block_map
,block
);
595 ext2fs_mark_bb_dirty(current_fs
);
598 void do_setb(int argc
, char *argv
[])
603 if (common_block_args_process(argc
, argv
, &block
, &count
))
605 if (check_fs_read_write(argv
[0]))
607 while (count
-- > 0) {
608 if (ext2fs_test_block_bitmap(current_fs
->block_map
,block
))
609 com_err(argv
[0], 0, "Warning: block %d already set",
611 ext2fs_mark_block_bitmap(current_fs
->block_map
,block
);
614 ext2fs_mark_bb_dirty(current_fs
);
617 void do_testb(int argc
, char *argv
[])
622 if (common_block_args_process(argc
, argv
, &block
, &count
))
624 while (count
-- > 0) {
625 if (ext2fs_test_block_bitmap(current_fs
->block_map
,block
))
626 printf("Block %d marked in use\n", block
);
628 printf("Block %d not in use\n", block
);
633 static void modify_u8(char *com
, const char *prompt
,
634 const char *format
, __u8
*val
)
640 sprintf(buf
, format
, *val
);
641 printf("%30s [%s] ", prompt
, buf
);
642 fgets(buf
, sizeof(buf
), stdin
);
643 if (buf
[strlen (buf
) - 1] == '\n')
644 buf
[strlen (buf
) - 1] = '\0';
647 v
= strtoul(buf
, &tmp
, 0);
649 com_err(com
, 0, "Bad value - %s", buf
);
654 static void modify_u16(char *com
, const char *prompt
,
655 const char *format
, __u16
*val
)
661 sprintf(buf
, format
, *val
);
662 printf("%30s [%s] ", prompt
, buf
);
663 fgets(buf
, sizeof(buf
), stdin
);
664 if (buf
[strlen (buf
) - 1] == '\n')
665 buf
[strlen (buf
) - 1] = '\0';
668 v
= strtoul(buf
, &tmp
, 0);
670 com_err(com
, 0, "Bad value - %s", buf
);
675 static void modify_u32(char *com
, const char *prompt
,
676 const char *format
, __u32
*val
)
682 sprintf(buf
, format
, *val
);
683 printf("%30s [%s] ", prompt
, buf
);
684 fgets(buf
, sizeof(buf
), stdin
);
685 if (buf
[strlen (buf
) - 1] == '\n')
686 buf
[strlen (buf
) - 1] = '\0';
689 v
= strtoul(buf
, &tmp
, 0);
691 com_err(com
, 0, "Bad value - %s", buf
);
697 void do_modify_inode(int argc
, char *argv
[])
699 struct ext2_inode inode
;
700 ext2_ino_t inode_num
;
702 unsigned char *frag
, *fsize
;
705 const char *hex_format
= "0x%x";
706 const char *octal_format
= "0%o";
707 const char *decimal_format
= "%d";
709 if (common_inode_args_process(argc
, argv
, &inode_num
, CHECK_FS_RW
))
712 os
= current_fs
->super
->s_creator_os
;
714 if (debugfs_read_inode(inode_num
, &inode
, argv
[1]))
717 modify_u16(argv
[0], "Mode", octal_format
, &inode
.i_mode
);
718 modify_u16(argv
[0], "User ID", decimal_format
, &inode
.i_uid
);
719 modify_u16(argv
[0], "Group ID", decimal_format
, &inode
.i_gid
);
720 modify_u32(argv
[0], "Size", decimal_format
, &inode
.i_size
);
721 modify_u32(argv
[0], "Creation time", decimal_format
, &inode
.i_ctime
);
722 modify_u32(argv
[0], "Modification time", decimal_format
, &inode
.i_mtime
);
723 modify_u32(argv
[0], "Access time", decimal_format
, &inode
.i_atime
);
724 modify_u32(argv
[0], "Deletion time", decimal_format
, &inode
.i_dtime
);
725 modify_u16(argv
[0], "Link count", decimal_format
, &inode
.i_links_count
);
726 modify_u32(argv
[0], "Block count", decimal_format
, &inode
.i_blocks
);
727 modify_u32(argv
[0], "File flags", hex_format
, &inode
.i_flags
);
728 modify_u32(argv
[0], "Generation", hex_format
, &inode
.i_generation
);
730 modify_u32(argv
[0], "Reserved1", decimal_format
, &inode
.i_reserved1
);
732 modify_u32(argv
[0], "File acl", decimal_format
, &inode
.i_file_acl
);
733 if (LINUX_S_ISDIR(inode
.i_mode
))
734 modify_u32(argv
[0], "Directory acl", decimal_format
, &inode
.i_dir_acl
);
736 modify_u32(argv
[0], "High 32bits of size", decimal_format
, &inode
.i_size_high
);
738 if (current_fs
->super
->s_creator_os
== EXT2_OS_HURD
)
739 modify_u32(argv
[0], "Translator Block",
740 decimal_format
, &inode
.osd1
.hurd1
.h_i_translator
);
742 modify_u32(argv
[0], "Fragment address", decimal_format
, &inode
.i_faddr
);
745 frag
= &inode
.osd2
.linux2
.l_i_frag
;
746 fsize
= &inode
.osd2
.linux2
.l_i_fsize
;
749 frag
= &inode
.osd2
.hurd2
.h_i_frag
;
750 fsize
= &inode
.osd2
.hurd2
.h_i_fsize
;
753 frag
= &inode
.osd2
.masix2
.m_i_frag
;
754 fsize
= &inode
.osd2
.masix2
.m_i_fsize
;
760 modify_u8(argv
[0], "Fragment number", decimal_format
, frag
);
762 modify_u8(argv
[0], "Fragment size", decimal_format
, fsize
);
764 for (i
=0; i
< EXT2_NDIR_BLOCKS
; i
++) {
765 sprintf(buf
, "Direct Block #%d", i
);
766 modify_u32(argv
[0], buf
, decimal_format
, &inode
.i_block
[i
]);
768 modify_u32(argv
[0], "Indirect Block", decimal_format
,
769 &inode
.i_block
[EXT2_IND_BLOCK
]);
770 modify_u32(argv
[0], "Double Indirect Block", decimal_format
,
771 &inode
.i_block
[EXT2_DIND_BLOCK
]);
772 modify_u32(argv
[0], "Triple Indirect Block", decimal_format
,
773 &inode
.i_block
[EXT2_TIND_BLOCK
]);
774 if (debugfs_write_inode(inode_num
, &inode
, argv
[1]))
778 void do_change_working_dir(int argc
, char *argv
[])
783 if (common_inode_args_process(argc
, argv
, &inode
, 0))
786 retval
= ext2fs_check_directory(current_fs
, inode
);
788 com_err(argv
[1], retval
, "");
795 void do_print_working_directory(int argc
, char *argv
[])
798 char *pathname
= NULL
;
800 if (common_args_process(argc
, argv
, 1, 1,
801 "print_working_directory", "", 0))
804 retval
= ext2fs_get_pathname(current_fs
, cwd
, 0, &pathname
);
806 com_err(argv
[0], retval
,
807 "while trying to get pathname of cwd");
809 printf("[pwd] INODE: %6u PATH: %s\n", cwd
, pathname
);
811 retval
= ext2fs_get_pathname(current_fs
, root
, 0, &pathname
);
813 com_err(argv
[0], retval
,
814 "while trying to get pathname of root");
816 printf("[root] INODE: %6u PATH: %s\n", root
, pathname
);
822 * Given a mode, return the ext2 file type
824 static int ext2_file_type(unsigned int mode
)
826 if (LINUX_S_ISREG(mode
))
827 return EXT2_FT_REG_FILE
;
829 if (LINUX_S_ISDIR(mode
))
832 if (LINUX_S_ISCHR(mode
))
833 return EXT2_FT_CHRDEV
;
835 if (LINUX_S_ISBLK(mode
))
836 return EXT2_FT_BLKDEV
;
838 if (LINUX_S_ISLNK(mode
))
839 return EXT2_FT_SYMLINK
;
841 if (LINUX_S_ISFIFO(mode
))
844 if (LINUX_S_ISSOCK(mode
))
850 static void make_link(char *sourcename
, char *destname
)
853 struct ext2_inode inode
;
856 char *dest
, *cp
, *basename
;
859 * Get the source inode
861 ino
= string_to_inode(sourcename
);
864 basename
= strrchr(sourcename
, '/');
868 basename
= sourcename
;
870 * Figure out the destination. First see if it exists and is
873 if (! (retval
=ext2fs_namei(current_fs
, root
, cwd
, destname
, &dir
)))
877 * OK, it doesn't exist. See if it is
878 * '<dir>/basename' or 'basename'
880 cp
= strrchr(destname
, '/');
883 dir
= string_to_inode(destname
);
893 if (debugfs_read_inode(ino
, &inode
, sourcename
))
896 retval
= ext2fs_link(current_fs
, dir
, dest
, ino
,
897 ext2_file_type(inode
.i_mode
));
899 com_err("make_link", retval
, "");
904 void do_link(int argc
, char *argv
[])
906 if (common_args_process(argc
, argv
, 3, 3, "link",
907 "<source file> <dest_name>", CHECK_FS_RW
))
910 make_link(argv
[1], argv
[2]);
913 static int mark_blocks_proc(ext2_filsys fs
, blk_t
*blocknr
,
914 int blockcnt
EXT2FS_ATTR((unused
)),
915 void *private EXT2FS_ATTR((unused
)))
920 ext2fs_block_alloc_stats(fs
, block
, +1);
924 void do_undel(int argc
, char *argv
[])
927 struct ext2_inode inode
;
929 if (common_args_process(argc
, argv
, 3, 3, "undelete",
930 "<inode_num> <dest_name>",
931 CHECK_FS_RW
| CHECK_FS_BITMAPS
))
934 ino
= string_to_inode(argv
[1]);
938 if (debugfs_read_inode(ino
, &inode
, argv
[1]))
941 if (ext2fs_test_inode_bitmap(current_fs
->inode_map
, ino
)) {
942 com_err(argv
[1], 0, "Inode is not marked as deleted");
947 * XXX this function doesn't handle changing the links count on the
948 * parent directory when undeleting a directory.
950 inode
.i_links_count
= LINUX_S_ISDIR(inode
.i_mode
) ? 2 : 1;
953 if (debugfs_write_inode(ino
, &inode
, argv
[0]))
956 ext2fs_block_iterate(current_fs
, ino
, 0, NULL
,
957 mark_blocks_proc
, NULL
);
959 ext2fs_inode_alloc_stats2(current_fs
, ino
, +1, 0);
961 make_link(argv
[1], argv
[2]);
964 static void unlink_file_by_name(char *filename
)
970 basename
= strrchr(filename
, '/');
973 dir
= string_to_inode(filename
);
980 retval
= ext2fs_unlink(current_fs
, dir
, basename
, 0, 0);
982 com_err("unlink_file_by_name", retval
, "");
986 void do_unlink(int argc
, char *argv
[])
988 if (common_args_process(argc
, argv
, 2, 2, "link",
989 "<pathname>", CHECK_FS_RW
))
992 unlink_file_by_name(argv
[1]);
995 void do_find_free_block(int argc
, char *argv
[])
997 blk_t free_blk
, goal
;
1002 if ((argc
> 3) || (argc
==2 && *argv
[1] == '?')) {
1003 com_err(argv
[0], 0, "Usage: find_free_block [count [goal]]");
1006 if (check_fs_open(argv
[0]))
1010 count
= strtol(argv
[1],&tmp
,0);
1012 com_err(argv
[0], 0, "Bad count - %s", argv
[1]);
1019 goal
= strtol(argv
[2], &tmp
, 0);
1021 com_err(argv
[0], 0, "Bad goal - %s", argv
[1]);
1026 goal
= current_fs
->super
->s_first_data_block
;
1028 printf("Free blocks found: ");
1029 free_blk
= goal
- 1;
1030 while (count
-- > 0) {
1031 retval
= ext2fs_new_block(current_fs
, free_blk
+ 1, 0,
1034 com_err("ext2fs_new_block", retval
, "");
1037 printf("%d ", free_blk
);
1042 void do_find_free_inode(int argc
, char *argv
[])
1044 ext2_ino_t free_inode
, dir
;
1049 if (argc
> 3 || (argc
>1 && *argv
[1] == '?')) {
1050 com_err(argv
[0], 0, "Usage: find_free_inode [dir] [mode]");
1053 if (check_fs_open(argv
[0]))
1057 dir
= strtol(argv
[1], &tmp
, 0);
1059 com_err(argv
[0], 0, "Bad dir - %s", argv
[1]);
1066 mode
= strtol(argv
[2], &tmp
, 0);
1068 com_err(argv
[0], 0, "Bad mode - %s", argv
[2]);
1074 retval
= ext2fs_new_inode(current_fs
, dir
, mode
, 0, &free_inode
);
1076 com_err("ext2fs_new_inode", retval
, "");
1078 printf("Free inode found: %u\n", free_inode
);
1081 static errcode_t
copy_file(int fd
, ext2_ino_t newfile
)
1083 ext2_file_t e2_file
;
1086 unsigned int written
;
1090 retval
= ext2fs_file_open(current_fs
, newfile
,
1091 EXT2_FILE_WRITE
, &e2_file
);
1096 got
= read(fd
, buf
, sizeof(buf
));
1105 retval
= ext2fs_file_write(e2_file
, ptr
,
1114 retval
= ext2fs_file_close(e2_file
);
1118 (void) ext2fs_file_close(e2_file
);
1123 void do_write(int argc
, char *argv
[])
1126 struct stat statbuf
;
1129 struct ext2_inode inode
;
1131 if (common_args_process(argc
, argv
, 3, 3, "write",
1132 "<native file> <new file>", CHECK_FS_RW
))
1135 fd
= open(argv
[1], O_RDONLY
);
1137 com_err(argv
[1], errno
, "");
1140 if (fstat(fd
, &statbuf
) < 0) {
1141 com_err(argv
[1], errno
, "");
1146 retval
= ext2fs_namei(current_fs
, root
, cwd
, argv
[2], &newfile
);
1148 com_err(argv
[0], 0, "The file '%s' already exists\n", argv
[2]);
1153 retval
= ext2fs_new_inode(current_fs
, cwd
, 010755, 0, &newfile
);
1155 com_err(argv
[0], retval
, "");
1159 printf("Allocated inode: %u\n", newfile
);
1160 retval
= ext2fs_link(current_fs
, cwd
, argv
[2], newfile
,
1162 if (retval
== EXT2_ET_DIR_NO_SPACE
) {
1163 retval
= ext2fs_expand_dir(current_fs
, cwd
);
1165 com_err(argv
[0], retval
, "while expanding directory");
1168 retval
= ext2fs_link(current_fs
, cwd
, argv
[2], newfile
,
1172 com_err(argv
[2], retval
, "");
1176 if (ext2fs_test_inode_bitmap(current_fs
->inode_map
,newfile
))
1177 com_err(argv
[0], 0, "Warning: inode already set");
1178 ext2fs_inode_alloc_stats2(current_fs
, newfile
, +1, 0);
1179 memset(&inode
, 0, sizeof(inode
));
1180 inode
.i_mode
= (statbuf
.st_mode
& ~LINUX_S_IFMT
) | LINUX_S_IFREG
;
1181 inode
.i_atime
= inode
.i_ctime
= inode
.i_mtime
= time(NULL
);
1182 inode
.i_links_count
= 1;
1183 inode
.i_size
= statbuf
.st_size
;
1184 if (debugfs_write_inode(newfile
, &inode
, argv
[0])) {
1188 if (LINUX_S_ISREG(inode
.i_mode
)) {
1189 retval
= copy_file(fd
, newfile
);
1191 com_err("copy_file", retval
, "");
1196 void do_mknod(int argc
, char *argv
[])
1198 unsigned long mode
, major
, minor
;
1201 struct ext2_inode inode
;
1204 if (check_fs_open(argv
[0]))
1206 if (argc
< 3 || argv
[2][1]) {
1208 com_err(argv
[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1211 mode
= minor
= major
= 0;
1212 switch (argv
[2][0]) {
1214 mode
= LINUX_S_IFIFO
;
1215 filetype
= EXT2_FT_FIFO
;
1219 mode
= LINUX_S_IFCHR
;
1220 filetype
= EXT2_FT_CHRDEV
;
1224 mode
= LINUX_S_IFBLK
;
1225 filetype
= EXT2_FT_BLKDEV
;
1233 major
= strtoul(argv
[3], argv
+3, 0);
1234 minor
= strtoul(argv
[4], argv
+4, 0);
1235 if (major
> 65535 || minor
> 65535 || argv
[3][0] || argv
[4][0])
1240 if (check_fs_read_write(argv
[0]))
1242 retval
= ext2fs_new_inode(current_fs
, cwd
, 010755, 0, &newfile
);
1244 com_err(argv
[0], retval
, "");
1247 printf("Allocated inode: %u\n", newfile
);
1248 retval
= ext2fs_link(current_fs
, cwd
, argv
[1], newfile
, filetype
);
1249 if (retval
== EXT2_ET_DIR_NO_SPACE
) {
1250 retval
= ext2fs_expand_dir(current_fs
, cwd
);
1252 com_err(argv
[0], retval
, "while expanding directory");
1255 retval
= ext2fs_link(current_fs
, cwd
, argv
[1], newfile
,
1259 com_err(argv
[1], retval
, "");
1262 if (ext2fs_test_inode_bitmap(current_fs
->inode_map
,newfile
))
1263 com_err(argv
[0], 0, "Warning: inode already set");
1264 ext2fs_mark_inode_bitmap(current_fs
->inode_map
, newfile
);
1265 ext2fs_mark_ib_dirty(current_fs
);
1266 memset(&inode
, 0, sizeof(inode
));
1267 inode
.i_mode
= mode
;
1268 inode
.i_atime
= inode
.i_ctime
= inode
.i_mtime
= time(NULL
);
1269 if ((major
< 256) && (minor
< 256)) {
1270 inode
.i_block
[0] = major
*256+minor
;
1271 inode
.i_block
[1] = 0;
1273 inode
.i_block
[0] = 0;
1274 inode
.i_block
[1] = (minor
& 0xff) | (major
<< 8) | ((minor
& ~0xff) << 12);
1276 inode
.i_links_count
= 1;
1277 if (debugfs_write_inode(newfile
, &inode
, argv
[0]))
1281 void do_mkdir(int argc
, char *argv
[])
1288 if (common_args_process(argc
, argv
, 2, 2, "mkdir",
1289 "<filename>", CHECK_FS_RW
))
1292 cp
= strrchr(argv
[1], '/');
1295 parent
= string_to_inode(argv
[1]);
1297 com_err(argv
[1], ENOENT
, "");
1307 retval
= ext2fs_mkdir(current_fs
, parent
, 0, name
);
1308 if (retval
== EXT2_ET_DIR_NO_SPACE
) {
1309 retval
= ext2fs_expand_dir(current_fs
, parent
);
1311 com_err("argv[0]", retval
, "while expanding directory");
1317 com_err("ext2fs_mkdir", retval
, "");
1323 static int release_blocks_proc(ext2_filsys fs
, blk_t
*blocknr
,
1324 int blockcnt
EXT2FS_ATTR((unused
)),
1325 void *private EXT2FS_ATTR((unused
)))
1330 ext2fs_block_alloc_stats(fs
, block
, -1);
1334 static void kill_file_by_inode(ext2_ino_t inode
)
1336 struct ext2_inode inode_buf
;
1338 if (debugfs_read_inode(inode
, &inode_buf
, 0))
1340 inode_buf
.i_dtime
= time(NULL
);
1341 if (debugfs_write_inode(inode
, &inode_buf
, 0))
1344 ext2fs_block_iterate(current_fs
, inode
, 0, NULL
,
1345 release_blocks_proc
, NULL
);
1347 ext2fs_inode_alloc_stats2(current_fs
, inode
, -1,
1348 LINUX_S_ISDIR(inode_buf
.i_mode
));
1352 void do_kill_file(int argc
, char *argv
[])
1354 ext2_ino_t inode_num
;
1356 if (common_inode_args_process(argc
, argv
, &inode_num
, CHECK_FS_RW
))
1359 kill_file_by_inode(inode_num
);
1362 void do_rm(int argc
, char *argv
[])
1365 ext2_ino_t inode_num
;
1366 struct ext2_inode inode
;
1368 if (common_args_process(argc
, argv
, 2, 2, "rm",
1369 "<filename>", CHECK_FS_RW
))
1372 retval
= ext2fs_namei(current_fs
, root
, cwd
, argv
[1], &inode_num
);
1374 com_err(argv
[0], retval
, "while trying to resolve filename");
1378 if (debugfs_read_inode(inode_num
, &inode
, argv
[0]))
1381 if (LINUX_S_ISDIR(inode
.i_mode
)) {
1382 com_err(argv
[0], 0, "file is a directory");
1386 --inode
.i_links_count
;
1387 if (debugfs_write_inode(inode_num
, &inode
, argv
[0]))
1390 unlink_file_by_name(argv
[1]);
1391 if (inode
.i_links_count
== 0)
1392 kill_file_by_inode(inode_num
);
1400 static int rmdir_proc(ext2_ino_t dir
EXT2FS_ATTR((unused
)),
1401 int entry
EXT2FS_ATTR((unused
)),
1402 struct ext2_dir_entry
*dirent
,
1403 int offset
EXT2FS_ATTR((unused
)),
1404 int blocksize
EXT2FS_ATTR((unused
)),
1405 char *buf
EXT2FS_ATTR((unused
)),
1408 struct rd_struct
*rds
= (struct rd_struct
*) private;
1410 if (dirent
->inode
== 0)
1412 if (((dirent
->name_len
&0xFF) == 1) && (dirent
->name
[0] == '.'))
1414 if (((dirent
->name_len
&0xFF) == 2) && (dirent
->name
[0] == '.') &&
1415 (dirent
->name
[1] == '.')) {
1416 rds
->parent
= dirent
->inode
;
1423 void do_rmdir(int argc
, char *argv
[])
1426 ext2_ino_t inode_num
;
1427 struct ext2_inode inode
;
1428 struct rd_struct rds
;
1430 if (common_args_process(argc
, argv
, 2, 2, "rmdir",
1431 "<filename>", CHECK_FS_RW
))
1434 retval
= ext2fs_namei(current_fs
, root
, cwd
, argv
[1], &inode_num
);
1436 com_err(argv
[0], retval
, "while trying to resolve filename");
1440 if (debugfs_read_inode(inode_num
, &inode
, argv
[0]))
1443 if (!LINUX_S_ISDIR(inode
.i_mode
)) {
1444 com_err(argv
[0], 0, "file is not a directory");
1451 retval
= ext2fs_dir_iterate2(current_fs
, inode_num
, 0,
1452 0, rmdir_proc
, &rds
);
1454 com_err(argv
[0], retval
, "while iterating over directory");
1457 if (rds
.empty
== 0) {
1458 com_err(argv
[0], 0, "directory not empty");
1462 inode
.i_links_count
= 0;
1463 if (debugfs_write_inode(inode_num
, &inode
, argv
[0]))
1466 unlink_file_by_name(argv
[1]);
1467 kill_file_by_inode(inode_num
);
1470 if (debugfs_read_inode(rds
.parent
, &inode
, argv
[0]))
1472 if (inode
.i_links_count
> 1)
1473 inode
.i_links_count
--;
1474 if (debugfs_write_inode(rds
.parent
, &inode
, argv
[0]))
1479 void do_show_debugfs_params(int argc
EXT2FS_ATTR((unused
)),
1480 char *argv
[] EXT2FS_ATTR((unused
)))
1485 fprintf(out
, "Open mode: read-%s\n",
1486 current_fs
->flags
& EXT2_FLAG_RW
? "write" : "only");
1487 fprintf(out
, "Filesystem in use: %s\n",
1488 current_fs
? current_fs
->device_name
: "--none--");
1491 void do_expand_dir(int argc
, char *argv
[])
1496 if (common_inode_args_process(argc
, argv
, &inode
, CHECK_FS_RW
))
1499 retval
= ext2fs_expand_dir(current_fs
, inode
);
1501 com_err("ext2fs_expand_dir", retval
, "");
1505 void do_features(int argc
, char *argv
[])
1509 if (check_fs_open(argv
[0]))
1512 if ((argc
!= 1) && check_fs_read_write(argv
[0]))
1514 for (i
=1; i
< argc
; i
++) {
1515 if (e2p_edit_feature(argv
[i
],
1516 ¤t_fs
->super
->s_feature_compat
, 0))
1517 com_err(argv
[0], 0, "Unknown feature: %s\n",
1520 ext2fs_mark_super_dirty(current_fs
);
1522 print_features(current_fs
->super
, stdout
);
1525 void do_bmap(int argc
, char *argv
[])
1532 if (common_args_process(argc
, argv
, 3, 3, argv
[0],
1533 "<file> logical_blk", 0))
1536 ino
= string_to_inode(argv
[1]);
1539 blk
= parse_ulong(argv
[2], argv
[0], "logical_block", &err
);
1541 errcode
= ext2fs_bmap(current_fs
, ino
, 0, 0, 0, blk
, &pblk
);
1543 com_err("argv[0]", errcode
,
1544 "while mapping logical block %d\n", blk
);
1547 printf("%d\n", pblk
);
1550 void do_imap(int argc
, char *argv
[])
1553 unsigned long group
, block
, block_nr
, offset
;
1555 if (common_args_process(argc
, argv
, 2, 2, argv
[0],
1558 ino
= string_to_inode(argv
[1]);
1562 group
= (ino
- 1) / EXT2_INODES_PER_GROUP(current_fs
->super
);
1563 offset
= ((ino
- 1) % EXT2_INODES_PER_GROUP(current_fs
->super
)) *
1564 EXT2_INODE_SIZE(current_fs
->super
);
1565 block
= offset
>> EXT2_BLOCK_SIZE_BITS(current_fs
->super
);
1566 if (!current_fs
->group_desc
[(unsigned)group
].bg_inode_table
) {
1567 com_err(argv
[0], 0, "Inode table for group %lu is missing\n",
1571 block_nr
= current_fs
->group_desc
[(unsigned)group
].bg_inode_table
+
1573 offset
&= (EXT2_BLOCK_SIZE(current_fs
->super
) - 1);
1575 printf("Inode %d is part of block group %lu\n"
1576 "\tlocated at block %lu, offset 0x%04lx\n", ino
, group
,
1583 static int source_file(const char *cmd_file
, int sci_idx
)
1588 int exit_status
= 0;
1591 if (strcmp(cmd_file
, "-") == 0)
1594 f
= fopen(cmd_file
, "r");
1600 setbuf(stdout
, NULL
);
1601 setbuf(stderr
, NULL
);
1603 if (fgets(buf
, sizeof(buf
), f
) == NULL
)
1605 cp
= strchr(buf
, '\n');
1608 cp
= strchr(buf
, '\r');
1611 printf("debugfs: %s\n", buf
);
1612 retval
= ss_execute_line(sci_idx
, buf
);
1614 ss_perror(sci_idx
, retval
, buf
);
1621 int main(int argc
, char **argv
)
1625 const char *usage
= "Usage: debugfs [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]";
1629 int exit_status
= 0;
1631 blk_t superblock
= 0;
1632 blk_t blocksize
= 0;
1633 int catastrophic
= 0;
1635 initialize_ext2_error_table();
1636 fprintf (stderr
, "debugfs %s (%s)\n", E2FSPROGS_VERSION
,
1639 while ((c
= getopt (argc
, argv
, "iwcR:f:b:s:V")) != EOF
) {
1648 open_flags
|= EXT2_FLAG_IMAGE_FILE
;
1651 open_flags
|= EXT2_FLAG_RW
;
1654 blocksize
= parse_ulong(optarg
, argv
[0],
1658 superblock
= parse_ulong(optarg
, argv
[0],
1659 "superblock number", 0);
1665 /* Print version number and exit */
1666 fprintf(stderr
, "\tUsing %s\n",
1667 error_message(EXT2_ET_BASE
));
1670 com_err(argv
[0], 0, usage
);
1675 open_filesystem(argv
[optind
], open_flags
,
1676 superblock
, blocksize
, catastrophic
);
1678 sci_idx
= ss_create_invocation("debugfs", "0.0", (char *) NULL
,
1679 &debug_cmds
, &retval
);
1681 ss_perror(sci_idx
, retval
, "creating invocation");
1684 ss_get_readline(sci_idx
);
1686 (void) ss_add_request_table (sci_idx
, &ss_std_requests
, 1, &retval
);
1688 ss_perror(sci_idx
, retval
, "adding standard requests");
1693 retval
= ss_execute_line(sci_idx
, request
);
1695 ss_perror(sci_idx
, retval
, request
);
1698 } else if (cmd_file
) {
1699 exit_status
= source_file(cmd_file
, sci_idx
);