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[tools/e2fsprogs.git] / debugfs / debugfs.c
1 /*
2  * debugfs.c --- a program which allows you to attach an ext2fs
3  * filesystem and play with it.
4  *
5  * Copyright (C) 1993 Theodore Ts'o.  This file may be redistributed
6  * under the terms of the GNU Public License.
7  * 
8  * Modifications by Robert Sanders <gt8134b@prism.gatech.edu>
9  */
10
11 #include <stdio.h>
12 #include <unistd.h>
13 #include <stdlib.h>
14 #include <ctype.h>
15 #include <string.h>
16 #include <time.h>
17 #ifdef HAVE_GETOPT_H
18 #include <getopt.h>
19 #else 
20 extern int optind;
21 extern char *optarg;
22 #endif
23 #ifdef HAVE_ERRNO_H
24 #include <errno.h>
25 #endif
26 #include <fcntl.h>
27 #include <sys/types.h>
28 #include <sys/stat.h>
29
30 #include "et/com_err.h"
31 #include "ss/ss.h"
32 #include "debugfs.h"
33 #include "uuid/uuid.h"
34 #include "e2p/e2p.h"
35
36 #include <ext2fs/ext2_ext_attr.h>
37
38 #include "../version.h"
39
40 extern ss_request_table debug_cmds;
41 ss_request_table *extra_cmds;
42 char *debug_prog_name;
43
44 ext2_filsys     current_fs = NULL;
45 ext2_ino_t      root, cwd;
46
47 static void open_filesystem(char *device, int open_flags, blk_t superblock,
48                             blk_t blocksize, int catastrophic, 
49                             char *data_filename)
50 {
51         int     retval;
52         io_channel data_io = 0;
53
54         if (superblock != 0 && blocksize == 0) {
55                 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
56                 current_fs = NULL;
57                 return;
58         }
59
60         if (data_filename) {
61                 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
62                         com_err(device, 0, 
63                                 "The -d option is only valid when reading an e2image file");
64                         current_fs = NULL;
65                         return;
66                 }
67                 retval = unix_io_manager->open(data_filename, 0, &data_io);
68                 if (retval) {
69                         com_err(data_filename, 0, "while opening data source");
70                         current_fs = NULL;
71                         return;
72                 }
73         }
74
75         if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
76                 com_err(device, 0,
77                         "opening read-only because of catastrophic mode");
78                 open_flags &= ~EXT2_FLAG_RW;
79         }
80         
81         retval = ext2fs_open(device, open_flags, superblock, blocksize,
82                              unix_io_manager, &current_fs);
83         if (retval) {
84                 com_err(device, retval, "while opening filesystem");
85                 current_fs = NULL;
86                 return;
87         }
88
89         if (catastrophic)
90                 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
91         else {
92                 retval = ext2fs_read_inode_bitmap(current_fs);
93                 if (retval) {
94                         com_err(device, retval, "while reading inode bitmap");
95                         goto errout;
96                 }
97                 retval = ext2fs_read_block_bitmap(current_fs);
98                 if (retval) {
99                         com_err(device, retval, "while reading block bitmap");
100                         goto errout;
101                 }
102         }
103
104         if (data_io) {
105                 retval = ext2fs_set_data_io(current_fs, data_io);
106                 if (retval) {
107                         com_err(device, retval, 
108                                 "while setting data source");
109                         goto errout;
110                 }
111         }
112
113         root = cwd = EXT2_ROOT_INO;
114         return;
115
116 errout:
117         retval = ext2fs_close(current_fs);
118         if (retval)
119                 com_err(device, retval, "while trying to close filesystem");
120         current_fs = NULL;
121 }
122
123 void do_open_filesys(int argc, char **argv)
124 {
125         int     c, err;
126         int     catastrophic = 0;
127         blk_t   superblock = 0;
128         blk_t   blocksize = 0;
129         int     open_flags = EXT2_FLAG_SOFTSUPP_FEATURES;
130         char    *data_filename = 0;
131         
132         reset_getopt();
133         while ((c = getopt (argc, argv, "iwfecb:s:d:")) != EOF) {
134                 switch (c) {
135                 case 'i':
136                         open_flags |= EXT2_FLAG_IMAGE_FILE;
137                         break;
138                 case 'w':
139                         open_flags |= EXT2_FLAG_RW;
140                         break;
141                 case 'f':
142                         open_flags |= EXT2_FLAG_FORCE;
143                         break;
144                 case 'e':
145                         open_flags |= EXT2_FLAG_EXCLUSIVE;
146                         break;
147                 case 'c':
148                         catastrophic = 1;
149                         break;
150                 case 'd':
151                         data_filename = optarg;
152                         break;
153                 case 'b':
154                         blocksize = parse_ulong(optarg, argv[0],
155                                                 "block size", &err);
156                         if (err)
157                                 return;
158                         break;
159                 case 's':
160                         superblock = parse_ulong(optarg, argv[0],
161                                                  "superblock number", &err);
162                         if (err)
163                                 return;
164                         break;
165                 default:
166                         goto print_usage;
167                 }
168         }
169         if (optind != argc-1) {
170                 goto print_usage;
171         }
172         if (check_fs_not_open(argv[0]))
173                 return;
174         open_filesystem(argv[optind], open_flags,
175                         superblock, blocksize, catastrophic, 
176                         data_filename);
177         return;
178
179 print_usage:
180         fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] "
181                 "[-c] [-w] <device>\n", argv[0]);
182 }
183
184 void do_lcd(int argc, char **argv)
185 {
186         if (argc != 2) {
187                 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>");
188                 return;
189         }
190
191         if (chdir(argv[1]) == -1) {
192                 com_err(argv[0], errno,
193                         "while trying to change native directory to %s",
194                         argv[1]);
195                 return;
196         }
197 }
198
199 static void close_filesystem(NOARGS)
200 {
201         int     retval;
202         
203         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
204                 retval = ext2fs_write_inode_bitmap(current_fs);
205                 if (retval)
206                         com_err("ext2fs_write_inode_bitmap", retval, 0);
207         }
208         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
209                 retval = ext2fs_write_block_bitmap(current_fs);
210                 if (retval)
211                         com_err("ext2fs_write_block_bitmap", retval, 0);
212         }
213         retval = ext2fs_close(current_fs);
214         if (retval)
215                 com_err("ext2fs_close", retval, 0);
216         current_fs = NULL;
217         return;
218 }
219
220 void do_close_filesys(int argc, char **argv)
221 {
222         if (common_args_process(argc, argv, 1, 1, "close_filesys", "", 0))
223                 return;
224         close_filesystem();
225 }
226
227 void do_init_filesys(int argc, char **argv)
228 {
229         struct ext2_super_block param;
230         errcode_t       retval;
231         int             err;
232         
233         if (common_args_process(argc, argv, 3, 3, "initialize",
234                                 "<device> <blocksize>", CHECK_FS_NOTOPEN))
235                 return;
236
237         memset(&param, 0, sizeof(struct ext2_super_block));
238         param.s_blocks_count = parse_ulong(argv[2], argv[0],
239                                            "blocks count", &err);
240         if (err)
241                 return;
242         retval = ext2fs_initialize(argv[1], 0, &param,
243                                    unix_io_manager, &current_fs);
244         if (retval) {
245                 com_err(argv[1], retval, "while initializing filesystem");
246                 current_fs = NULL;
247                 return;
248         }
249         root = cwd = EXT2_ROOT_INO;
250         return;
251 }
252
253 static void print_features(struct ext2_super_block * s, FILE *f)
254 {
255         int     i, j, printed=0;
256         __u32   *mask = &s->s_feature_compat, m;
257
258         fputs("Filesystem features:", f);
259         for (i=0; i <3; i++,mask++) {
260                 for (j=0,m=1; j < 32; j++, m<<=1) {
261                         if (*mask & m) {
262                                 fprintf(f, " %s", e2p_feature2string(i, m));
263                                 printed++;
264                         }
265                 }
266         }
267         if (printed == 0)
268                 fputs("(none)", f);
269         fputs("\n", f);
270 }
271
272 static void print_bg_opts(struct ext2_group_desc *gdp, int mask,
273                           const char *str, int *first, FILE *f)
274 {
275         if (gdp->bg_flags & mask) {
276                 if (*first) {
277                         fputs("           [", f);
278                         *first = 0;
279                 } else
280                         fputs(", ", f);
281                 fputs(str, f);
282         }
283 }
284
285 void do_show_super_stats(int argc, char *argv[])
286 {
287         dgrp_t  i;
288         FILE    *out;
289         struct ext2_group_desc *gdp;
290         int     c, header_only = 0;
291         int     numdirs = 0, first;
292
293         reset_getopt();
294         while ((c = getopt (argc, argv, "h")) != EOF) {
295                 switch (c) {
296                 case 'h':
297                         header_only++;
298                         break;
299                 default:
300                         goto print_usage;
301                 }
302         }
303         if (optind != argc) {
304                 goto print_usage;
305         }
306         if (check_fs_open(argv[0]))
307                 return;
308         out = open_pager();
309
310         list_super2(current_fs->super, out);
311         for (i=0; i < current_fs->group_desc_count; i++)
312                 numdirs += current_fs->group_desc[i].bg_used_dirs_count;
313         fprintf(out, "Directories:              %d\n", numdirs);
314         
315         if (header_only) {
316                 close_pager(out);
317                 return;
318         }
319         
320         gdp = &current_fs->group_desc[0];
321         for (i = 0; i < current_fs->group_desc_count; i++, gdp++) {
322                 fprintf(out, " Group %2d: block bitmap at %u, "
323                         "inode bitmap at %u, "
324                         "inode table at %u\n"
325                         "           %d free %s, "
326                         "%d free %s, "
327                         "%d used %s\n",
328                         i, gdp->bg_block_bitmap,
329                         gdp->bg_inode_bitmap, gdp->bg_inode_table,
330                         gdp->bg_free_blocks_count,
331                         gdp->bg_free_blocks_count != 1 ? "blocks" : "block",
332                         gdp->bg_free_inodes_count,
333                         gdp->bg_free_inodes_count != 1 ? "inodes" : "inode",
334                         gdp->bg_used_dirs_count,
335                         gdp->bg_used_dirs_count != 1 ? "directories"
336                                 : "directory");
337                 first = 1;
338                 print_bg_opts(gdp, EXT2_BG_INODE_UNINIT, "Inode not init",
339                               &first, out);
340                 print_bg_opts(gdp, EXT2_BG_BLOCK_UNINIT, "Block not init",
341                               &first, out);
342                 if (!first)
343                         fputs("]\n", out);
344         }
345         close_pager(out);
346         return;
347 print_usage:
348         fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
349 }
350
351 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)), 
352                       char **argv EXT2FS_ATTR((unused)))
353 {
354         if (check_fs_open(argv[0]))
355                 return;
356         if (check_fs_read_write(argv[0]))
357                 return;
358
359         if (argv[1] && !strcmp(argv[1], "-clean"))
360                 current_fs->super->s_state |= EXT2_VALID_FS;
361         else
362                 current_fs->super->s_state &= ~EXT2_VALID_FS;
363         ext2fs_mark_super_dirty(current_fs);
364 }
365
366 struct list_blocks_struct {
367         FILE            *f;
368         e2_blkcnt_t     total;
369         blk_t           first_block, last_block;
370         e2_blkcnt_t     first_bcnt, last_bcnt;
371         e2_blkcnt_t     first;
372 };
373
374 static void finish_range(struct list_blocks_struct *lb)
375 {
376         if (lb->first_block == 0)
377                 return;
378         if (lb->first)
379                 lb->first = 0;
380         else
381                 fprintf(lb->f, ", ");
382         if (lb->first_block == lb->last_block)
383                 fprintf(lb->f, "(%lld):%u",
384                         (long long)lb->first_bcnt, lb->first_block);
385         else
386                 fprintf(lb->f, "(%lld-%lld):%u-%u",
387                         (long long)lb->first_bcnt, (long long)lb->last_bcnt,
388                         lb->first_block, lb->last_block);
389         lb->first_block = 0;
390 }
391
392 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)), 
393                             blk_t *blocknr, e2_blkcnt_t blockcnt, 
394                             blk_t ref_block EXT2FS_ATTR((unused)),
395                             int ref_offset EXT2FS_ATTR((unused)), 
396                             void *private)
397 {
398         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
399
400         lb->total++;
401         if (blockcnt >= 0) {
402                 /*
403                  * See if we can add on to the existing range (if it exists)
404                  */
405                 if (lb->first_block &&
406                     (lb->last_block+1 == *blocknr) &&
407                     (lb->last_bcnt+1 == blockcnt)) {
408                         lb->last_block = *blocknr;
409                         lb->last_bcnt = blockcnt;
410                         return 0;
411                 }
412                 /*
413                  * Start a new range.
414                  */
415                 finish_range(lb);
416                 lb->first_block = lb->last_block = *blocknr;
417                 lb->first_bcnt = lb->last_bcnt = blockcnt;
418                 return 0;
419         }
420         /*
421          * Not a normal block.  Always force a new range.
422          */
423         finish_range(lb);
424         if (lb->first)
425                 lb->first = 0;
426         else
427                 fprintf(lb->f, ", ");
428         if (blockcnt == -1)
429                 fprintf(lb->f, "(IND):%u", *blocknr);
430         else if (blockcnt == -2)
431                 fprintf(lb->f, "(DIND):%u", *blocknr);
432         else if (blockcnt == -3)
433                 fprintf(lb->f, "(TIND):%u", *blocknr);
434         return 0;
435 }
436
437 static void dump_xattr_string(FILE *out, const char *str, int len)
438 {
439         int printable = 0;
440         int i;
441         
442         /* check: is string "printable enough?" */
443         for (i = 0; i < len; i++)
444                 if (isprint(str[i]))
445                         printable++;
446
447         if (printable <= len*7/8)
448                 printable = 0;
449
450         for (i = 0; i < len; i++)
451                 if (printable)
452                         fprintf(out, isprint(str[i]) ? "%c" : "\\%03o",
453                                 (unsigned char)str[i]);
454                 else
455                         fprintf(out, "%02x ", (unsigned char)str[i]);
456 }
457
458 static void internal_dump_inode_extra(FILE *out, 
459                                       const char *prefix EXT2FS_ATTR((unused)),
460                                       ext2_ino_t inode_num EXT2FS_ATTR((unused)), 
461                                       struct ext2_inode_large *inode)
462 {
463         struct ext2_ext_attr_entry *entry;
464         __u32 *magic;
465         char *start, *end;
466         unsigned int storage_size;
467
468         fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
469         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
470                         EXT2_GOOD_OLD_INODE_SIZE) {
471                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
472                                 inode->i_extra_isize);
473                 return;
474         }
475         storage_size = EXT2_INODE_SIZE(current_fs->super) -
476                         EXT2_GOOD_OLD_INODE_SIZE -
477                         inode->i_extra_isize;
478         magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
479                         inode->i_extra_isize);
480         if (*magic == EXT2_EXT_ATTR_MAGIC) {
481                 fprintf(out, "Extended attributes stored in inode body: \n");
482                 end = (char *) inode + EXT2_INODE_SIZE(current_fs->super);
483                 start = (char *) magic + sizeof(__u32);
484                 entry = (struct ext2_ext_attr_entry *) start;
485                 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
486                         struct ext2_ext_attr_entry *next =
487                                 EXT2_EXT_ATTR_NEXT(entry);
488                         if (entry->e_value_size > storage_size ||
489                                         (char *) next >= end) {
490                                 fprintf(out, "invalid EA entry in inode\n");
491                                 return;
492                         }
493                         fprintf(out, "  ");
494                         dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry), 
495                                           entry->e_name_len);
496                         fprintf(out, " = \"");
497                         dump_xattr_string(out, start + entry->e_value_offs,
498                                                 entry->e_value_size);
499                         fprintf(out, "\" (%u)\n", entry->e_value_size);
500                         entry = next;
501                 }
502         }
503 }
504
505 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
506 {
507         struct list_blocks_struct lb;
508
509         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
510         lb.total = 0;
511         lb.first_block = 0;
512         lb.f = f;
513         lb.first = 1;
514         ext2fs_block_iterate2(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
515                              list_blocks_proc, (void *)&lb);
516         finish_range(&lb);
517         if (lb.total)
518                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
519         fprintf(f,"\n");
520 }
521
522
523 void internal_dump_inode(FILE *out, const char *prefix,
524                          ext2_ino_t inode_num, struct ext2_inode *inode,
525                          int do_dump_blocks)
526 {
527         const char *i_type;
528         char frag, fsize;
529         int os = current_fs->super->s_creator_os;
530         
531         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
532         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
533         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
534         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
535         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
536         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
537         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
538         else i_type = "bad type";
539         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
540         fprintf(out, "%sMode:  %04o   Flags: 0x%x   Generation: %u\n",
541                 prefix, 
542                 inode->i_mode & 0777, inode->i_flags, inode->i_generation);
543         fprintf(out, "%sUser: %5d   Group: %5d   Size: ",
544                 prefix, inode_uid(*inode), inode_gid(*inode));
545         if (LINUX_S_ISREG(inode->i_mode)) {
546                 unsigned long long i_size = (inode->i_size |
547                                     ((unsigned long long)inode->i_size_high << 32));
548
549                 fprintf(out, "%llu\n", i_size);
550         } else
551                 fprintf(out, "%d\n", inode->i_size);
552         if (os == EXT2_OS_HURD)
553                 fprintf(out,
554                         "%sFile ACL: %d    Directory ACL: %d Translator: %d\n",
555                         prefix,
556                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
557                         inode->osd1.hurd1.h_i_translator);
558         else
559                 fprintf(out, "%sFile ACL: %d    Directory ACL: %d\n",
560                         prefix,
561                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
562         if (os == EXT2_OS_LINUX) 
563                 fprintf(out, "%sLinks: %d   Blockcount: %llu\n",
564                         prefix, inode->i_links_count, 
565                         (((unsigned long long) 
566                           inode->osd2.linux2.l_i_blocks_hi << 32)) + 
567                         inode->i_blocks);
568         else
569                 fprintf(out, "%sLinks: %d   Blockcount: %u\n",
570                         prefix, inode->i_links_count, inode->i_blocks);
571         switch (os) {
572             case EXT2_OS_HURD:
573                 frag = inode->osd2.hurd2.h_i_frag;
574                 fsize = inode->osd2.hurd2.h_i_fsize;
575                 break;
576             default:
577                 frag = fsize = 0;
578         }
579         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
580                 prefix, inode->i_faddr, frag, fsize);
581         fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
582                 time_to_string(inode->i_ctime));
583         fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
584                 time_to_string(inode->i_atime));
585         fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
586                 time_to_string(inode->i_mtime));
587         if (inode->i_dtime) 
588           fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
589                   time_to_string(inode->i_dtime));
590         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
591                 internal_dump_inode_extra(out, prefix, inode_num,
592                                           (struct ext2_inode_large *) inode);
593         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
594                 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
595                         (int) inode->i_size, (char *)inode->i_block);
596         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
597                 int major, minor;
598                 const char *devnote;
599
600                 if (inode->i_block[0]) {
601                         major = (inode->i_block[0] >> 8) & 255;
602                         minor = inode->i_block[0] & 255;
603                         devnote = "";
604                 } else {
605                         major = (inode->i_block[1] & 0xfff00) >> 8;
606                         minor = ((inode->i_block[1] & 0xff) | 
607                                  ((inode->i_block[1] >> 12) & 0xfff00));
608                         devnote = "(New-style) ";
609                 }
610                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n", 
611                         devnote, major, minor, major, minor);
612         }
613         else if (do_dump_blocks)
614                 dump_blocks(out, prefix, inode_num);
615 }
616
617 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
618 {
619         FILE    *out;
620         
621         out = open_pager();
622         internal_dump_inode(out, "", inode_num, inode, 1);
623         close_pager(out);
624 }
625
626 void do_stat(int argc, char *argv[])
627 {
628         ext2_ino_t      inode;
629         struct ext2_inode * inode_buf;
630
631         if (check_fs_open(argv[0]))
632                 return;
633
634         inode_buf = (struct ext2_inode *)
635                         malloc(EXT2_INODE_SIZE(current_fs->super));
636         if (!inode_buf) {
637                 fprintf(stderr, "do_stat: can't allocate buffer\n");
638                 return;
639         }
640
641         if (common_inode_args_process(argc, argv, &inode, 0)) {
642                 free(inode_buf);
643                 return;
644         }
645
646         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
647                                         EXT2_INODE_SIZE(current_fs->super))) {
648                 free(inode_buf);
649                 return;
650         }
651
652         dump_inode(inode, inode_buf);
653         free(inode_buf);
654         return;
655 }
656
657 void do_chroot(int argc, char *argv[])
658 {
659         ext2_ino_t inode;
660         int retval;
661
662         if (common_inode_args_process(argc, argv, &inode, 0))
663                 return;
664
665         retval = ext2fs_check_directory(current_fs, inode);
666         if (retval)  {
667                 com_err(argv[1], retval, 0);
668                 return;
669         }
670         root = inode;
671 }
672
673 void do_clri(int argc, char *argv[])
674 {
675         ext2_ino_t inode;
676         struct ext2_inode inode_buf;
677
678         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
679                 return;
680
681         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
682                 return;
683         memset(&inode_buf, 0, sizeof(inode_buf));
684         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
685                 return;
686 }
687
688 void do_freei(int argc, char *argv[])
689 {
690         ext2_ino_t inode;
691
692         if (common_inode_args_process(argc, argv, &inode,
693                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
694                 return;
695
696         if (!ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
697                 com_err(argv[0], 0, "Warning: inode already clear");
698         ext2fs_unmark_inode_bitmap(current_fs->inode_map,inode);
699         ext2fs_mark_ib_dirty(current_fs);
700 }
701
702 void do_seti(int argc, char *argv[])
703 {
704         ext2_ino_t inode;
705
706         if (common_inode_args_process(argc, argv, &inode,
707                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
708                 return;
709
710         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
711                 com_err(argv[0], 0, "Warning: inode already set");
712         ext2fs_mark_inode_bitmap(current_fs->inode_map,inode);
713         ext2fs_mark_ib_dirty(current_fs);
714 }
715
716 void do_testi(int argc, char *argv[])
717 {
718         ext2_ino_t inode;
719
720         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
721                 return;
722
723         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
724                 printf("Inode %u is marked in use\n", inode);
725         else
726                 printf("Inode %u is not in use\n", inode);
727 }
728
729 void do_freeb(int argc, char *argv[])
730 {
731         blk_t block;
732         blk_t count = 1;
733
734         if (common_block_args_process(argc, argv, &block, &count))
735                 return;
736         if (check_fs_read_write(argv[0]))
737                 return;
738         while (count-- > 0) {
739                 if (!ext2fs_test_block_bitmap(current_fs->block_map,block))
740                         com_err(argv[0], 0, "Warning: block %u already clear",
741                                 block);
742                 ext2fs_unmark_block_bitmap(current_fs->block_map,block);
743                 block++;
744         }
745         ext2fs_mark_bb_dirty(current_fs);
746 }
747
748 void do_setb(int argc, char *argv[])
749 {
750         blk_t block;
751         blk_t count = 1;
752
753         if (common_block_args_process(argc, argv, &block, &count))
754                 return;
755         if (check_fs_read_write(argv[0]))
756                 return;
757         while (count-- > 0) {
758                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
759                         com_err(argv[0], 0, "Warning: block %u already set",
760                                 block);
761                 ext2fs_mark_block_bitmap(current_fs->block_map,block);
762                 block++;
763         }
764         ext2fs_mark_bb_dirty(current_fs);
765 }
766
767 void do_testb(int argc, char *argv[])
768 {
769         blk_t block;
770         blk_t count = 1;
771
772         if (common_block_args_process(argc, argv, &block, &count))
773                 return;
774         while (count-- > 0) {
775                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
776                         printf("Block %u marked in use\n", block);
777                 else
778                         printf("Block %u not in use\n", block);
779                 block++;
780         }
781 }
782
783 static void modify_u8(char *com, const char *prompt,
784                       const char *format, __u8 *val)
785 {
786         char buf[200];
787         unsigned long v;
788         char *tmp;
789
790         sprintf(buf, format, *val);
791         printf("%30s    [%s] ", prompt, buf);
792         if (!fgets(buf, sizeof(buf), stdin))
793                 return;
794         if (buf[strlen (buf) - 1] == '\n')
795                 buf[strlen (buf) - 1] = '\0';
796         if (!buf[0])
797                 return;
798         v = strtoul(buf, &tmp, 0);
799         if (*tmp)
800                 com_err(com, 0, "Bad value - %s", buf);
801         else
802                 *val = v;
803 }
804
805 static void modify_u16(char *com, const char *prompt,
806                        const char *format, __u16 *val)
807 {
808         char buf[200];
809         unsigned long v;
810         char *tmp;
811
812         sprintf(buf, format, *val);
813         printf("%30s    [%s] ", prompt, buf);
814         if (!fgets(buf, sizeof(buf), stdin))
815                 return;
816         if (buf[strlen (buf) - 1] == '\n')
817                 buf[strlen (buf) - 1] = '\0';
818         if (!buf[0])
819                 return;
820         v = strtoul(buf, &tmp, 0);
821         if (*tmp)
822                 com_err(com, 0, "Bad value - %s", buf);
823         else
824                 *val = v;
825 }
826
827 static void modify_u32(char *com, const char *prompt,
828                        const char *format, __u32 *val)
829 {
830         char buf[200];
831         unsigned long v;
832         char *tmp;
833
834         sprintf(buf, format, *val);
835         printf("%30s    [%s] ", prompt, buf);
836         if (!fgets(buf, sizeof(buf), stdin))
837                 return;
838         if (buf[strlen (buf) - 1] == '\n')
839                 buf[strlen (buf) - 1] = '\0';
840         if (!buf[0])
841                 return;
842         v = strtoul(buf, &tmp, 0);
843         if (*tmp)
844                 com_err(com, 0, "Bad value - %s", buf);
845         else
846                 *val = v;
847 }
848
849
850 void do_modify_inode(int argc, char *argv[])
851 {
852         struct ext2_inode inode;
853         ext2_ino_t      inode_num;
854         int             i;
855         unsigned char   *frag, *fsize;
856         char            buf[80];
857         int             os;
858         const char      *hex_format = "0x%x";
859         const char      *octal_format = "0%o";
860         const char      *decimal_format = "%d";
861         const char      *unsignedlong_format = "%lu";
862         
863         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
864                 return;
865
866         os = current_fs->super->s_creator_os;
867
868         if (debugfs_read_inode(inode_num, &inode, argv[1]))
869                 return;
870         
871         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
872         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
873         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
874         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
875         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
876         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
877         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
878         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
879         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
880         if (os == EXT2_OS_LINUX)
881                 modify_u16(argv[0], "Block count high", unsignedlong_format, 
882                            &inode.osd2.linux2.l_i_blocks_hi);
883         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
884         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
885         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
886 #if 0
887         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
888 #endif
889         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
890         if (LINUX_S_ISDIR(inode.i_mode))
891                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
892         else
893                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
894
895         if (os == EXT2_OS_HURD)
896                 modify_u32(argv[0], "Translator Block",
897                             decimal_format, &inode.osd1.hurd1.h_i_translator);
898         
899         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
900         switch (os) {
901             case EXT2_OS_HURD:
902                 frag = &inode.osd2.hurd2.h_i_frag;
903                 fsize = &inode.osd2.hurd2.h_i_fsize;
904                 break;
905             default:
906                 frag = fsize = 0;
907         }
908         if (frag)
909                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
910         if (fsize)
911                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
912
913         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
914                 sprintf(buf, "Direct Block #%d", i);
915                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
916         }
917         modify_u32(argv[0], "Indirect Block", decimal_format,
918                     &inode.i_block[EXT2_IND_BLOCK]);    
919         modify_u32(argv[0], "Double Indirect Block", decimal_format,
920                     &inode.i_block[EXT2_DIND_BLOCK]);
921         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
922                     &inode.i_block[EXT2_TIND_BLOCK]);
923         if (debugfs_write_inode(inode_num, &inode, argv[1]))
924                 return;
925 }
926
927 void do_change_working_dir(int argc, char *argv[])
928 {
929         ext2_ino_t      inode;
930         int             retval;
931         
932         if (common_inode_args_process(argc, argv, &inode, 0))
933                 return;
934
935         retval = ext2fs_check_directory(current_fs, inode);
936         if (retval) {
937                 com_err(argv[1], retval, 0);
938                 return;
939         }
940         cwd = inode;
941         return;
942 }
943
944 void do_print_working_directory(int argc, char *argv[])
945 {
946         int     retval;
947         char    *pathname = NULL;
948         
949         if (common_args_process(argc, argv, 1, 1,
950                                 "print_working_directory", "", 0))
951                 return;
952
953         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
954         if (retval) {
955                 com_err(argv[0], retval,
956                         "while trying to get pathname of cwd");
957         }
958         printf("[pwd]   INODE: %6u  PATH: %s\n",
959                cwd, pathname ? pathname : "NULL");
960         if (pathname) {
961                 free(pathname);
962                 pathname = NULL;
963         }
964         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
965         if (retval) {
966                 com_err(argv[0], retval,
967                         "while trying to get pathname of root");
968         }
969         printf("[root]  INODE: %6u  PATH: %s\n",
970                root, pathname ? pathname : "NULL");
971         if (pathname) {
972                 free(pathname);
973                 pathname = NULL;
974         }
975         return;
976 }
977
978 /*
979  * Given a mode, return the ext2 file type
980  */
981 static int ext2_file_type(unsigned int mode)
982 {
983         if (LINUX_S_ISREG(mode))
984                 return EXT2_FT_REG_FILE;
985
986         if (LINUX_S_ISDIR(mode))
987                 return EXT2_FT_DIR;
988         
989         if (LINUX_S_ISCHR(mode))
990                 return EXT2_FT_CHRDEV;
991         
992         if (LINUX_S_ISBLK(mode))
993                 return EXT2_FT_BLKDEV;
994         
995         if (LINUX_S_ISLNK(mode))
996                 return EXT2_FT_SYMLINK;
997
998         if (LINUX_S_ISFIFO(mode))
999                 return EXT2_FT_FIFO;
1000         
1001         if (LINUX_S_ISSOCK(mode))
1002                 return EXT2_FT_SOCK;
1003         
1004         return 0;
1005 }
1006
1007 static void make_link(char *sourcename, char *destname)
1008 {
1009         ext2_ino_t      ino;
1010         struct ext2_inode inode;
1011         int             retval;
1012         ext2_ino_t      dir;
1013         char            *dest, *cp, *base_name;
1014
1015         /*
1016          * Get the source inode
1017          */
1018         ino = string_to_inode(sourcename);
1019         if (!ino)
1020                 return;
1021         base_name = strrchr(sourcename, '/');
1022         if (base_name)
1023                 base_name++;
1024         else
1025                 base_name = sourcename;
1026         /*
1027          * Figure out the destination.  First see if it exists and is
1028          * a directory.  
1029          */
1030         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1031                 dest = base_name;
1032         else {
1033                 /*
1034                  * OK, it doesn't exist.  See if it is
1035                  * '<dir>/basename' or 'basename'
1036                  */
1037                 cp = strrchr(destname, '/');
1038                 if (cp) {
1039                         *cp = 0;
1040                         dir = string_to_inode(destname);
1041                         if (!dir)
1042                                 return;
1043                         dest = cp+1;
1044                 } else {
1045                         dir = cwd;
1046                         dest = destname;
1047                 }
1048         }
1049
1050         if (debugfs_read_inode(ino, &inode, sourcename))
1051                 return;
1052         
1053         retval = ext2fs_link(current_fs, dir, dest, ino, 
1054                              ext2_file_type(inode.i_mode));
1055         if (retval)
1056                 com_err("make_link", retval, 0);
1057         return;
1058 }
1059
1060
1061 void do_link(int argc, char *argv[])
1062 {
1063         if (common_args_process(argc, argv, 3, 3, "link",
1064                                 "<source file> <dest_name>", CHECK_FS_RW))
1065                 return;
1066
1067         make_link(argv[1], argv[2]);
1068 }
1069
1070 static int mark_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1071                             int blockcnt EXT2FS_ATTR((unused)), 
1072                             void *private EXT2FS_ATTR((unused)))
1073 {
1074         blk_t   block;
1075
1076         block = *blocknr;
1077         ext2fs_block_alloc_stats(fs, block, +1);
1078         return 0;
1079 }
1080
1081 void do_undel(int argc, char *argv[])
1082 {
1083         ext2_ino_t      ino;
1084         struct ext2_inode inode;
1085
1086         if (common_args_process(argc, argv, 2, 3, "undelete",
1087                                 "<inode_num> [dest_name]",
1088                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1089                 return;
1090
1091         ino = string_to_inode(argv[1]);
1092         if (!ino)
1093                 return;
1094
1095         if (debugfs_read_inode(ino, &inode, argv[1]))
1096                 return;
1097
1098         if (ext2fs_test_inode_bitmap(current_fs->inode_map, ino)) {
1099                 com_err(argv[1], 0, "Inode is not marked as deleted");
1100                 return;
1101         }
1102
1103         /*
1104          * XXX this function doesn't handle changing the links count on the
1105          * parent directory when undeleting a directory.  
1106          */
1107         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1108         inode.i_dtime = 0;
1109
1110         if (debugfs_write_inode(ino, &inode, argv[0]))
1111                 return;
1112
1113         ext2fs_block_iterate(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL,
1114                              mark_blocks_proc, NULL);
1115
1116         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1117
1118         if (argc > 2)
1119                 make_link(argv[1], argv[2]);
1120 }
1121
1122 static void unlink_file_by_name(char *filename)
1123 {
1124         int             retval;
1125         ext2_ino_t      dir;
1126         char            *base_name;
1127         
1128         base_name = strrchr(filename, '/');
1129         if (base_name) {
1130                 *base_name++ = '\0';
1131                 dir = string_to_inode(filename);
1132                 if (!dir)
1133                         return;
1134         } else {
1135                 dir = cwd;
1136                 base_name = filename;
1137         }
1138         retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
1139         if (retval)
1140                 com_err("unlink_file_by_name", retval, 0);
1141         return;
1142 }
1143
1144 void do_unlink(int argc, char *argv[])
1145 {
1146         if (common_args_process(argc, argv, 2, 2, "link",
1147                                 "<pathname>", CHECK_FS_RW))
1148                 return;
1149
1150         unlink_file_by_name(argv[1]);
1151 }
1152
1153 void do_find_free_block(int argc, char *argv[])
1154 {
1155         blk_t   free_blk, goal, first_free = 0;
1156         int             count;
1157         errcode_t       retval;
1158         char            *tmp;
1159         
1160         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1161                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1162                 return;
1163         }
1164         if (check_fs_open(argv[0]))
1165                 return;
1166
1167         if (argc > 1) {
1168                 count = strtol(argv[1],&tmp,0);
1169                 if (*tmp) {
1170                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1171                         return;
1172                 }
1173         } else
1174                 count = 1;
1175
1176         if (argc > 2) {
1177                 goal = strtol(argv[2], &tmp, 0);
1178                 if (*tmp) {
1179                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1180                         return;
1181                 }
1182         }
1183         else
1184                 goal = current_fs->super->s_first_data_block;
1185
1186         printf("Free blocks found: ");
1187         free_blk = goal - 1;    
1188         while (count-- > 0) {
1189                 retval = ext2fs_new_block(current_fs, free_blk + 1, 0,
1190                                           &free_blk);
1191                 if (first_free) {
1192                         if (first_free == free_blk)
1193                                 break;
1194                 } else
1195                         first_free = free_blk;
1196                 if (retval) {
1197                         com_err("ext2fs_new_block", retval, 0);
1198                         return;
1199                 } else
1200                         printf("%u ", free_blk);
1201         }
1202         printf("\n");
1203 }
1204
1205 void do_find_free_inode(int argc, char *argv[])
1206 {
1207         ext2_ino_t      free_inode, dir;
1208         int             mode;
1209         int             retval;
1210         char            *tmp;
1211         
1212         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1213                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1214                 return;
1215         }
1216         if (check_fs_open(argv[0]))
1217                 return;
1218
1219         if (argc > 1) {
1220                 dir = strtol(argv[1], &tmp, 0);
1221                 if (*tmp) {
1222                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1223                         return;
1224                 }
1225         }
1226         else
1227                 dir = root;
1228         if (argc > 2) {
1229                 mode = strtol(argv[2], &tmp, 0);
1230                 if (*tmp) {
1231                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1232                         return;
1233                 }
1234         } else
1235                 mode = 010755;
1236
1237         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1238         if (retval)
1239                 com_err("ext2fs_new_inode", retval, 0);
1240         else
1241                 printf("Free inode found: %u\n", free_inode);
1242 }
1243
1244 static errcode_t copy_file(int fd, ext2_ino_t newfile)
1245 {
1246         ext2_file_t     e2_file;
1247         errcode_t       retval;
1248         int             got;
1249         unsigned int    written;
1250         char            buf[8192];
1251         char            *ptr;
1252
1253         retval = ext2fs_file_open(current_fs, newfile,
1254                                   EXT2_FILE_WRITE, &e2_file);
1255         if (retval)
1256                 return retval;
1257
1258         while (1) {
1259                 got = read(fd, buf, sizeof(buf));
1260                 if (got == 0)
1261                         break;
1262                 if (got < 0) {
1263                         retval = errno;
1264                         goto fail;
1265                 }
1266                 ptr = buf;
1267                 while (got > 0) {
1268                         retval = ext2fs_file_write(e2_file, ptr,
1269                                                    got, &written);
1270                         if (retval)
1271                                 goto fail;
1272
1273                         got -= written;
1274                         ptr += written;
1275                 }
1276         }
1277         retval = ext2fs_file_close(e2_file);
1278         return retval;
1279
1280 fail:
1281         (void) ext2fs_file_close(e2_file);
1282         return retval;
1283 }
1284
1285
1286 void do_write(int argc, char *argv[])
1287 {
1288         int             fd;
1289         struct stat     statbuf;
1290         ext2_ino_t      newfile;
1291         errcode_t       retval;
1292         struct ext2_inode inode;
1293
1294         if (common_args_process(argc, argv, 3, 3, "write",
1295                                 "<native file> <new file>", CHECK_FS_RW))
1296                 return;
1297
1298         fd = open(argv[1], O_RDONLY);
1299         if (fd < 0) {
1300                 com_err(argv[1], errno, 0);
1301                 return;
1302         }
1303         if (fstat(fd, &statbuf) < 0) {
1304                 com_err(argv[1], errno, 0);
1305                 close(fd);
1306                 return;
1307         }
1308
1309         retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1310         if (retval == 0) {
1311                 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1312                 close(fd);
1313                 return;
1314         }
1315
1316         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1317         if (retval) {
1318                 com_err(argv[0], retval, 0);
1319                 close(fd);
1320                 return;
1321         }
1322         printf("Allocated inode: %u\n", newfile);
1323         retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1324                              EXT2_FT_REG_FILE);
1325         if (retval == EXT2_ET_DIR_NO_SPACE) {
1326                 retval = ext2fs_expand_dir(current_fs, cwd);
1327                 if (retval) {
1328                         com_err(argv[0], retval, "while expanding directory");
1329                         return;
1330                 }
1331                 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1332                                      EXT2_FT_REG_FILE);
1333         }
1334         if (retval) {
1335                 com_err(argv[2], retval, 0);
1336                 close(fd);
1337                 return;
1338         }
1339         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1340                 com_err(argv[0], 0, "Warning: inode already set");
1341         ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1342         memset(&inode, 0, sizeof(inode));
1343         inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
1344         inode.i_atime = inode.i_ctime = inode.i_mtime = 
1345                 current_fs->now ? current_fs->now : time(0);
1346         inode.i_links_count = 1;
1347         inode.i_size = statbuf.st_size;
1348         if (debugfs_write_new_inode(newfile, &inode, argv[0])) {
1349                 close(fd);
1350                 return;
1351         }
1352         if (LINUX_S_ISREG(inode.i_mode)) {
1353                 retval = copy_file(fd, newfile);
1354                 if (retval)
1355                         com_err("copy_file", retval, 0);
1356         }
1357         close(fd);
1358 }
1359
1360 void do_mknod(int argc, char *argv[])
1361 {
1362         unsigned long   mode, major, minor;
1363         ext2_ino_t      newfile;
1364         errcode_t       retval;
1365         struct ext2_inode inode;
1366         int             filetype, nr;
1367
1368         if (check_fs_open(argv[0]))
1369                 return;
1370         if (argc < 3 || argv[2][1]) {
1371         usage:
1372                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1373                 return;
1374         }
1375         mode = minor = major = 0;
1376         switch (argv[2][0]) {
1377                 case 'p':
1378                         mode = LINUX_S_IFIFO;
1379                         filetype = EXT2_FT_FIFO;
1380                         nr = 3;
1381                         break;
1382                 case 'c':
1383                         mode = LINUX_S_IFCHR;
1384                         filetype = EXT2_FT_CHRDEV;
1385                         nr = 5;
1386                         break;
1387                 case 'b':
1388                         mode = LINUX_S_IFBLK;
1389                         filetype = EXT2_FT_BLKDEV;
1390                         nr = 5;
1391                         break;
1392                 default:
1393                         filetype = 0;
1394                         nr = 0;
1395         }
1396         if (nr == 5) {
1397                 major = strtoul(argv[3], argv+3, 0);
1398                 minor = strtoul(argv[4], argv+4, 0);
1399                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1400                         nr = 0;
1401         }
1402         if (argc != nr)
1403                 goto usage;
1404         if (check_fs_read_write(argv[0]))
1405                 return;
1406         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1407         if (retval) {
1408                 com_err(argv[0], retval, 0);
1409                 return;
1410         }
1411         printf("Allocated inode: %u\n", newfile);
1412         retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1413         if (retval == EXT2_ET_DIR_NO_SPACE) {
1414                 retval = ext2fs_expand_dir(current_fs, cwd);
1415                 if (retval) {
1416                         com_err(argv[0], retval, "while expanding directory");
1417                         return;
1418                 }
1419                 retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
1420                                      filetype);
1421         }
1422         if (retval) {
1423                 com_err(argv[1], retval, 0);
1424                 return;
1425         }
1426         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1427                 com_err(argv[0], 0, "Warning: inode already set");
1428         ext2fs_mark_inode_bitmap(current_fs->inode_map, newfile);
1429         ext2fs_mark_ib_dirty(current_fs);
1430         memset(&inode, 0, sizeof(inode));
1431         inode.i_mode = mode;
1432         inode.i_atime = inode.i_ctime = inode.i_mtime = 
1433                 current_fs->now ? current_fs->now : time(0);
1434         if ((major < 256) && (minor < 256)) {
1435                 inode.i_block[0] = major*256+minor;
1436                 inode.i_block[1] = 0;
1437         } else {
1438                 inode.i_block[0] = 0;
1439                 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
1440         }
1441         inode.i_links_count = 1;
1442         if (debugfs_write_new_inode(newfile, &inode, argv[0]))
1443                 return;
1444 }
1445
1446 void do_mkdir(int argc, char *argv[])
1447 {
1448         char    *cp;
1449         ext2_ino_t      parent;
1450         char    *name;
1451         errcode_t retval;
1452
1453         if (common_args_process(argc, argv, 2, 2, "mkdir",
1454                                 "<filename>", CHECK_FS_RW))
1455                 return;
1456
1457         cp = strrchr(argv[1], '/');
1458         if (cp) {
1459                 *cp = 0;
1460                 parent = string_to_inode(argv[1]);
1461                 if (!parent) {
1462                         com_err(argv[1], ENOENT, 0);
1463                         return;
1464                 }
1465                 name = cp+1;
1466         } else {
1467                 parent = cwd;
1468                 name = argv[1];
1469         }
1470
1471 try_again:
1472         retval = ext2fs_mkdir(current_fs, parent, 0, name);
1473         if (retval == EXT2_ET_DIR_NO_SPACE) {
1474                 retval = ext2fs_expand_dir(current_fs, parent);
1475                 if (retval) {
1476                         com_err("argv[0]", retval, "while expanding directory");
1477                         return;
1478                 }
1479                 goto try_again;
1480         }
1481         if (retval) {
1482                 com_err("ext2fs_mkdir", retval, 0);
1483                 return;
1484         }
1485
1486 }
1487
1488 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1489                                int blockcnt EXT2FS_ATTR((unused)), 
1490                                void *private EXT2FS_ATTR((unused)))
1491 {
1492         blk_t   block;
1493
1494         block = *blocknr;
1495         ext2fs_block_alloc_stats(fs, block, -1);
1496         return 0;
1497 }
1498
1499 static void kill_file_by_inode(ext2_ino_t inode)
1500 {
1501         struct ext2_inode inode_buf;
1502
1503         if (debugfs_read_inode(inode, &inode_buf, 0))
1504                 return;
1505         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1506         if (debugfs_write_inode(inode, &inode_buf, 0))
1507                 return;
1508         if (!ext2fs_inode_has_valid_blocks(&inode_buf))
1509                 return;
1510
1511         ext2fs_block_iterate(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
1512                              release_blocks_proc, NULL);
1513         printf("\n");
1514         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1515                                   LINUX_S_ISDIR(inode_buf.i_mode));
1516 }
1517
1518
1519 void do_kill_file(int argc, char *argv[])
1520 {
1521         ext2_ino_t inode_num;
1522
1523         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1524                 return;
1525
1526         kill_file_by_inode(inode_num);
1527 }
1528
1529 void do_rm(int argc, char *argv[])
1530 {
1531         int retval;
1532         ext2_ino_t inode_num;
1533         struct ext2_inode inode;
1534
1535         if (common_args_process(argc, argv, 2, 2, "rm",
1536                                 "<filename>", CHECK_FS_RW))
1537                 return;
1538
1539         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1540         if (retval) {
1541                 com_err(argv[0], retval, "while trying to resolve filename");
1542                 return;
1543         }
1544
1545         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1546                 return;
1547
1548         if (LINUX_S_ISDIR(inode.i_mode)) {
1549                 com_err(argv[0], 0, "file is a directory");
1550                 return;
1551         }
1552
1553         --inode.i_links_count;
1554         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1555                 return;
1556
1557         unlink_file_by_name(argv[1]);
1558         if (inode.i_links_count == 0)
1559                 kill_file_by_inode(inode_num);
1560 }
1561
1562 struct rd_struct {
1563         ext2_ino_t      parent;
1564         int             empty;
1565 };
1566
1567 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1568                       int       entry EXT2FS_ATTR((unused)),
1569                       struct ext2_dir_entry *dirent,
1570                       int       offset EXT2FS_ATTR((unused)),
1571                       int       blocksize EXT2FS_ATTR((unused)),
1572                       char      *buf EXT2FS_ATTR((unused)),
1573                       void      *private)
1574 {
1575         struct rd_struct *rds = (struct rd_struct *) private;
1576
1577         if (dirent->inode == 0)
1578                 return 0;
1579         if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1580                 return 0;
1581         if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1582             (dirent->name[1] == '.')) {
1583                 rds->parent = dirent->inode;
1584                 return 0;
1585         }
1586         rds->empty = 0;
1587         return 0;
1588 }
1589         
1590 void do_rmdir(int argc, char *argv[])
1591 {
1592         int retval;
1593         ext2_ino_t inode_num;
1594         struct ext2_inode inode;
1595         struct rd_struct rds;
1596
1597         if (common_args_process(argc, argv, 2, 2, "rmdir",
1598                                 "<filename>", CHECK_FS_RW))
1599                 return;
1600
1601         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1602         if (retval) {
1603                 com_err(argv[0], retval, "while trying to resolve filename");
1604                 return;
1605         }
1606
1607         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1608                 return;
1609
1610         if (!LINUX_S_ISDIR(inode.i_mode)) {
1611                 com_err(argv[0], 0, "file is not a directory");
1612                 return;
1613         }
1614
1615         rds.parent = 0;
1616         rds.empty = 1;
1617
1618         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1619                                     0, rmdir_proc, &rds);
1620         if (retval) {
1621                 com_err(argv[0], retval, "while iterating over directory");
1622                 return;
1623         }
1624         if (rds.empty == 0) {
1625                 com_err(argv[0], 0, "directory not empty");
1626                 return;
1627         }
1628
1629         inode.i_links_count = 0;
1630         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1631                 return;
1632
1633         unlink_file_by_name(argv[1]);
1634         kill_file_by_inode(inode_num);
1635
1636         if (rds.parent) {
1637                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1638                         return;
1639                 if (inode.i_links_count > 1)
1640                         inode.i_links_count--;
1641                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1642                         return;
1643         }
1644 }
1645
1646 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)), 
1647                             char *argv[] EXT2FS_ATTR((unused)))
1648 {
1649         FILE *out = stdout;
1650
1651         if (current_fs)
1652                 fprintf(out, "Open mode: read-%s\n",
1653                         current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1654         fprintf(out, "Filesystem in use: %s\n",
1655                 current_fs ? current_fs->device_name : "--none--");
1656 }
1657
1658 void do_expand_dir(int argc, char *argv[])
1659 {
1660         ext2_ino_t inode;
1661         int retval;
1662
1663         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1664                 return;
1665
1666         retval = ext2fs_expand_dir(current_fs, inode);
1667         if (retval)
1668                 com_err("ext2fs_expand_dir", retval, 0);
1669         return;
1670 }
1671
1672 void do_features(int argc, char *argv[])
1673 {
1674         int     i;
1675         
1676         if (check_fs_open(argv[0]))
1677                 return;
1678
1679         if ((argc != 1) && check_fs_read_write(argv[0]))
1680                 return;
1681         for (i=1; i < argc; i++) {
1682                 if (e2p_edit_feature(argv[i],
1683                                      &current_fs->super->s_feature_compat, 0))
1684                         com_err(argv[0], 0, "Unknown feature: %s\n",
1685                                 argv[i]);
1686                 else
1687                         ext2fs_mark_super_dirty(current_fs);
1688         }
1689         print_features(current_fs->super, stdout);
1690 }
1691
1692 void do_bmap(int argc, char *argv[])
1693 {
1694         ext2_ino_t      ino;
1695         blk_t           blk, pblk;
1696         int             err;
1697         errcode_t       errcode;
1698         
1699         if (common_args_process(argc, argv, 3, 3, argv[0],
1700                                 "<file> logical_blk", 0))
1701                 return;
1702
1703         ino = string_to_inode(argv[1]);
1704         if (!ino)
1705                 return;
1706         blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
1707
1708         errcode = ext2fs_bmap(current_fs, ino, 0, 0, 0, blk, &pblk);
1709         if (errcode) {
1710                 com_err("argv[0]", errcode,
1711                         "while mapping logical block %u\n", blk);
1712                 return;
1713         }
1714         printf("%u\n", pblk);
1715 }
1716
1717 void do_imap(int argc, char *argv[])
1718 {
1719         ext2_ino_t      ino;
1720         unsigned long   group, block, block_nr, offset;
1721
1722         if (common_args_process(argc, argv, 2, 2, argv[0],
1723                                 "<file>", 0))
1724                 return;
1725         ino = string_to_inode(argv[1]);
1726         if (!ino)
1727                 return;
1728
1729         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
1730         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
1731                 EXT2_INODE_SIZE(current_fs->super);
1732         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
1733         if (!current_fs->group_desc[(unsigned)group].bg_inode_table) {
1734                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
1735                         group);
1736                 return;
1737         }
1738         block_nr = current_fs->group_desc[(unsigned)group].bg_inode_table + 
1739                 block;
1740         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
1741
1742         printf("Inode %d is part of block group %lu\n"
1743                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
1744                block_nr, offset);
1745
1746 }
1747
1748 void do_set_current_time(int argc, char *argv[])
1749 {
1750         time_t now;
1751
1752         if (common_args_process(argc, argv, 2, 2, argv[0],
1753                                 "<time>", 0))
1754                 return;
1755
1756         now = string_to_time(argv[1]);
1757         if (now == ((time_t) -1)) {
1758                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
1759                         argv[1]);
1760                 return;
1761
1762         } else {
1763                 printf("Setting current time to %s\n", time_to_string(now));
1764                 current_fs->now = now;
1765         }
1766 }
1767
1768 static int source_file(const char *cmd_file, int sci_idx)
1769 {
1770         FILE            *f;
1771         char            buf[256];
1772         char            *cp;
1773         int             exit_status = 0;
1774         int             retval;
1775
1776         if (strcmp(cmd_file, "-") == 0)
1777                 f = stdin;
1778         else {
1779                 f = fopen(cmd_file, "r");
1780                 if (!f) {
1781                         perror(cmd_file);
1782                         exit(1);
1783                 }
1784         }
1785         setbuf(stdout, NULL);
1786         setbuf(stderr, NULL);
1787         while (!feof(f)) {
1788                 if (fgets(buf, sizeof(buf), f) == NULL)
1789                         break;
1790                 cp = strchr(buf, '\n');
1791                 if (cp)
1792                         *cp = 0;
1793                 cp = strchr(buf, '\r');
1794                 if (cp)
1795                         *cp = 0;
1796                 printf("debugfs: %s\n", buf);
1797                 retval = ss_execute_line(sci_idx, buf);
1798                 if (retval) {
1799                         ss_perror(sci_idx, retval, buf);
1800                         exit_status++;
1801                 }
1802         }
1803         return exit_status;
1804 }
1805
1806 int main(int argc, char **argv)
1807 {
1808         int             retval;
1809         int             sci_idx;
1810         const char      *usage = "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]";
1811         int             c;
1812         int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES;
1813         char            *request = 0;
1814         int             exit_status = 0;
1815         char            *cmd_file = 0;
1816         blk_t           superblock = 0;
1817         blk_t           blocksize = 0;
1818         int             catastrophic = 0;
1819         char            *data_filename = 0;
1820         
1821         if (debug_prog_name == 0)
1822                 debug_prog_name = "debugfs";
1823
1824         add_error_table(&et_ext2_error_table);
1825         fprintf (stderr, "%s %s (%s)\n", debug_prog_name,
1826                  E2FSPROGS_VERSION, E2FSPROGS_DATE);
1827
1828         while ((c = getopt (argc, argv, "iwcR:f:b:s:Vd:")) != EOF) {
1829                 switch (c) {
1830                 case 'R':
1831                         request = optarg;
1832                         break;
1833                 case 'f':
1834                         cmd_file = optarg;
1835                         break;
1836                 case 'd':
1837                         data_filename = optarg;
1838                         break;
1839                 case 'i':
1840                         open_flags |= EXT2_FLAG_IMAGE_FILE;
1841                         break;
1842                 case 'w':
1843                         open_flags |= EXT2_FLAG_RW;
1844                         break;
1845                 case 'b':
1846                         blocksize = parse_ulong(optarg, argv[0], 
1847                                                 "block size", 0);
1848                         break;
1849                 case 's':
1850                         superblock = parse_ulong(optarg, argv[0], 
1851                                                  "superblock number", 0);
1852                         break;
1853                 case 'c':
1854                         catastrophic = 1;
1855                         break;
1856                 case 'V':
1857                         /* Print version number and exit */
1858                         fprintf(stderr, "\tUsing %s\n",
1859                                 error_message(EXT2_ET_BASE));
1860                         exit(0);
1861                 default:
1862                         com_err(argv[0], 0, usage, debug_prog_name);
1863                         return 1;
1864                 }
1865         }
1866         if (optind < argc)
1867                 open_filesystem(argv[optind], open_flags,
1868                                 superblock, blocksize, catastrophic,
1869                                 data_filename);
1870         
1871         sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL,
1872                                        &debug_cmds, &retval);
1873         if (retval) {
1874                 ss_perror(sci_idx, retval, "creating invocation");
1875                 exit(1);
1876         }
1877         ss_get_readline(sci_idx);
1878
1879         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
1880         if (retval) {
1881                 ss_perror(sci_idx, retval, "adding standard requests");
1882                 exit (1);
1883         }
1884         if (extra_cmds)
1885                 ss_add_request_table (sci_idx, extra_cmds, 1, &retval);
1886         if (retval) {
1887                 ss_perror(sci_idx, retval, "adding extra requests");
1888                 exit (1);
1889         }
1890         if (request) {
1891                 retval = 0;
1892                 retval = ss_execute_line(sci_idx, request);
1893                 if (retval) {
1894                         ss_perror(sci_idx, retval, request);
1895                         exit_status++;
1896                 }
1897         } else if (cmd_file) {
1898                 exit_status = source_file(cmd_file, sci_idx);
1899         } else {
1900                 ss_listen(sci_idx);
1901         }
1902
1903         if (current_fs)
1904                 close_filesystem();
1905         
1906         remove_error_table(&et_ext2_error_table);
1907         return exit_status;
1908 }