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Make debugfs uninit block group aware
[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 const 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, gdt_csum;
292
293         gdt_csum = EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super,
294                                               EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
295
296         reset_getopt();
297         while ((c = getopt (argc, argv, "h")) != EOF) {
298                 switch (c) {
299                 case 'h':
300                         header_only++;
301                         break;
302                 default:
303                         goto print_usage;
304                 }
305         }
306         if (optind != argc) {
307                 goto print_usage;
308         }
309         if (check_fs_open(argv[0]))
310                 return;
311         out = open_pager();
312
313         list_super2(current_fs->super, out);
314         for (i=0; i < current_fs->group_desc_count; i++)
315                 numdirs += current_fs->group_desc[i].bg_used_dirs_count;
316         fprintf(out, "Directories:              %d\n", numdirs);
317         
318         if (header_only) {
319                 close_pager(out);
320                 return;
321         }
322         
323         gdp = &current_fs->group_desc[0];
324         for (i = 0; i < current_fs->group_desc_count; i++, gdp++) {
325                 fprintf(out, " Group %2d: block bitmap at %u, "
326                         "inode bitmap at %u, "
327                         "inode table at %u\n"
328                         "           %d free %s, "
329                         "%d free %s, "
330                         "%d used %s%s",
331                         i, gdp->bg_block_bitmap,
332                         gdp->bg_inode_bitmap, gdp->bg_inode_table,
333                         gdp->bg_free_blocks_count,
334                         gdp->bg_free_blocks_count != 1 ? "blocks" : "block",
335                         gdp->bg_free_inodes_count,
336                         gdp->bg_free_inodes_count != 1 ? "inodes" : "inode",
337                         gdp->bg_used_dirs_count,
338                         gdp->bg_used_dirs_count != 1 ? "directories"
339                                 : "directory", gdt_csum ? ", " : "\n");
340                 if (gdt_csum)
341                         fprintf(out, "%d unused %s\n",
342                                 gdp->bg_itable_unused,
343                                 gdp->bg_itable_unused != 1 ? "inodes":"inode");
344                 first = 1;
345                 print_bg_opts(gdp, EXT2_BG_INODE_UNINIT, "Inode not init",
346                               &first, out);
347                 print_bg_opts(gdp, EXT2_BG_BLOCK_UNINIT, "Block not init",
348                               &first, out);
349                 if (gdt_csum) {
350                         fprintf(out, "%sChecksum 0x%04x",
351                                 first ? "           [":", ", gdp->bg_checksum);
352                         first = 0;
353                 }
354                 if (!first)
355                         fputs("]\n", out);
356         }
357         close_pager(out);
358         return;
359 print_usage:
360         fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
361 }
362
363 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)), 
364                       char **argv EXT2FS_ATTR((unused)))
365 {
366         if (check_fs_open(argv[0]))
367                 return;
368         if (check_fs_read_write(argv[0]))
369                 return;
370
371         if (argv[1] && !strcmp(argv[1], "-clean"))
372                 current_fs->super->s_state |= EXT2_VALID_FS;
373         else
374                 current_fs->super->s_state &= ~EXT2_VALID_FS;
375         ext2fs_mark_super_dirty(current_fs);
376 }
377
378 struct list_blocks_struct {
379         FILE            *f;
380         e2_blkcnt_t     total;
381         blk_t           first_block, last_block;
382         e2_blkcnt_t     first_bcnt, last_bcnt;
383         e2_blkcnt_t     first;
384 };
385
386 static void finish_range(struct list_blocks_struct *lb)
387 {
388         if (lb->first_block == 0)
389                 return;
390         if (lb->first)
391                 lb->first = 0;
392         else
393                 fprintf(lb->f, ", ");
394         if (lb->first_block == lb->last_block)
395                 fprintf(lb->f, "(%lld):%u",
396                         (long long)lb->first_bcnt, lb->first_block);
397         else
398                 fprintf(lb->f, "(%lld-%lld):%u-%u",
399                         (long long)lb->first_bcnt, (long long)lb->last_bcnt,
400                         lb->first_block, lb->last_block);
401         lb->first_block = 0;
402 }
403
404 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)), 
405                             blk_t *blocknr, e2_blkcnt_t blockcnt, 
406                             blk_t ref_block EXT2FS_ATTR((unused)),
407                             int ref_offset EXT2FS_ATTR((unused)), 
408                             void *private)
409 {
410         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
411
412         lb->total++;
413         if (blockcnt >= 0) {
414                 /*
415                  * See if we can add on to the existing range (if it exists)
416                  */
417                 if (lb->first_block &&
418                     (lb->last_block+1 == *blocknr) &&
419                     (lb->last_bcnt+1 == blockcnt)) {
420                         lb->last_block = *blocknr;
421                         lb->last_bcnt = blockcnt;
422                         return 0;
423                 }
424                 /*
425                  * Start a new range.
426                  */
427                 finish_range(lb);
428                 lb->first_block = lb->last_block = *blocknr;
429                 lb->first_bcnt = lb->last_bcnt = blockcnt;
430                 return 0;
431         }
432         /*
433          * Not a normal block.  Always force a new range.
434          */
435         finish_range(lb);
436         if (lb->first)
437                 lb->first = 0;
438         else
439                 fprintf(lb->f, ", ");
440         if (blockcnt == -1)
441                 fprintf(lb->f, "(IND):%u", *blocknr);
442         else if (blockcnt == -2)
443                 fprintf(lb->f, "(DIND):%u", *blocknr);
444         else if (blockcnt == -3)
445                 fprintf(lb->f, "(TIND):%u", *blocknr);
446         return 0;
447 }
448
449 static void dump_xattr_string(FILE *out, const char *str, int len)
450 {
451         int printable = 0;
452         int i;
453         
454         /* check: is string "printable enough?" */
455         for (i = 0; i < len; i++)
456                 if (isprint(str[i]))
457                         printable++;
458
459         if (printable <= len*7/8)
460                 printable = 0;
461
462         for (i = 0; i < len; i++)
463                 if (printable)
464                         fprintf(out, isprint(str[i]) ? "%c" : "\\%03o",
465                                 (unsigned char)str[i]);
466                 else
467                         fprintf(out, "%02x ", (unsigned char)str[i]);
468 }
469
470 static void internal_dump_inode_extra(FILE *out, 
471                                       const char *prefix EXT2FS_ATTR((unused)),
472                                       ext2_ino_t inode_num EXT2FS_ATTR((unused)), 
473                                       struct ext2_inode_large *inode)
474 {
475         struct ext2_ext_attr_entry *entry;
476         __u32 *magic;
477         char *start, *end;
478         unsigned int storage_size;
479
480         fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
481         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
482                         EXT2_GOOD_OLD_INODE_SIZE) {
483                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
484                                 inode->i_extra_isize);
485                 return;
486         }
487         storage_size = EXT2_INODE_SIZE(current_fs->super) -
488                         EXT2_GOOD_OLD_INODE_SIZE -
489                         inode->i_extra_isize;
490         magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
491                         inode->i_extra_isize);
492         if (*magic == EXT2_EXT_ATTR_MAGIC) {
493                 fprintf(out, "Extended attributes stored in inode body: \n");
494                 end = (char *) inode + EXT2_INODE_SIZE(current_fs->super);
495                 start = (char *) magic + sizeof(__u32);
496                 entry = (struct ext2_ext_attr_entry *) start;
497                 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
498                         struct ext2_ext_attr_entry *next =
499                                 EXT2_EXT_ATTR_NEXT(entry);
500                         if (entry->e_value_size > storage_size ||
501                                         (char *) next >= end) {
502                                 fprintf(out, "invalid EA entry in inode\n");
503                                 return;
504                         }
505                         fprintf(out, "  ");
506                         dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry), 
507                                           entry->e_name_len);
508                         fprintf(out, " = \"");
509                         dump_xattr_string(out, start + entry->e_value_offs,
510                                                 entry->e_value_size);
511                         fprintf(out, "\" (%u)\n", entry->e_value_size);
512                         entry = next;
513                 }
514         }
515 }
516
517 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
518 {
519         struct list_blocks_struct lb;
520
521         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
522         lb.total = 0;
523         lb.first_block = 0;
524         lb.f = f;
525         lb.first = 1;
526         ext2fs_block_iterate2(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
527                              list_blocks_proc, (void *)&lb);
528         finish_range(&lb);
529         if (lb.total)
530                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
531         fprintf(f,"\n");
532 }
533
534
535 void internal_dump_inode(FILE *out, const char *prefix,
536                          ext2_ino_t inode_num, struct ext2_inode *inode,
537                          int do_dump_blocks)
538 {
539         const char *i_type;
540         char frag, fsize;
541         int os = current_fs->super->s_creator_os;
542         
543         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
544         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
545         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
546         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
547         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
548         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
549         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
550         else i_type = "bad type";
551         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
552         fprintf(out, "%sMode:  %04o   Flags: 0x%x   Generation: %u\n",
553                 prefix, 
554                 inode->i_mode & 0777, inode->i_flags, inode->i_generation);
555         fprintf(out, "%sUser: %5d   Group: %5d   Size: ",
556                 prefix, inode_uid(*inode), inode_gid(*inode));
557         if (LINUX_S_ISREG(inode->i_mode)) {
558                 unsigned long long i_size = (inode->i_size |
559                                     ((unsigned long long)inode->i_size_high << 32));
560
561                 fprintf(out, "%llu\n", i_size);
562         } else
563                 fprintf(out, "%d\n", inode->i_size);
564         if (os == EXT2_OS_HURD)
565                 fprintf(out,
566                         "%sFile ACL: %d    Directory ACL: %d Translator: %d\n",
567                         prefix,
568                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
569                         inode->osd1.hurd1.h_i_translator);
570         else
571                 fprintf(out, "%sFile ACL: %d    Directory ACL: %d\n",
572                         prefix,
573                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
574         if (os == EXT2_OS_LINUX) 
575                 fprintf(out, "%sLinks: %d   Blockcount: %llu\n",
576                         prefix, inode->i_links_count, 
577                         (((unsigned long long) 
578                           inode->osd2.linux2.l_i_blocks_hi << 32)) + 
579                         inode->i_blocks);
580         else
581                 fprintf(out, "%sLinks: %d   Blockcount: %u\n",
582                         prefix, inode->i_links_count, inode->i_blocks);
583         switch (os) {
584             case EXT2_OS_HURD:
585                 frag = inode->osd2.hurd2.h_i_frag;
586                 fsize = inode->osd2.hurd2.h_i_fsize;
587                 break;
588             default:
589                 frag = fsize = 0;
590         }
591         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
592                 prefix, inode->i_faddr, frag, fsize);
593         fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
594                 time_to_string(inode->i_ctime));
595         fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
596                 time_to_string(inode->i_atime));
597         fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
598                 time_to_string(inode->i_mtime));
599         if (inode->i_dtime) 
600           fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
601                   time_to_string(inode->i_dtime));
602         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
603                 internal_dump_inode_extra(out, prefix, inode_num,
604                                           (struct ext2_inode_large *) inode);
605         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
606                 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
607                         (int) inode->i_size, (char *)inode->i_block);
608         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
609                 int major, minor;
610                 const char *devnote;
611
612                 if (inode->i_block[0]) {
613                         major = (inode->i_block[0] >> 8) & 255;
614                         minor = inode->i_block[0] & 255;
615                         devnote = "";
616                 } else {
617                         major = (inode->i_block[1] & 0xfff00) >> 8;
618                         minor = ((inode->i_block[1] & 0xff) | 
619                                  ((inode->i_block[1] >> 12) & 0xfff00));
620                         devnote = "(New-style) ";
621                 }
622                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n", 
623                         devnote, major, minor, major, minor);
624         }
625         else if (do_dump_blocks)
626                 dump_blocks(out, prefix, inode_num);
627 }
628
629 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
630 {
631         FILE    *out;
632         
633         out = open_pager();
634         internal_dump_inode(out, "", inode_num, inode, 1);
635         close_pager(out);
636 }
637
638 void do_stat(int argc, char *argv[])
639 {
640         ext2_ino_t      inode;
641         struct ext2_inode * inode_buf;
642
643         if (check_fs_open(argv[0]))
644                 return;
645
646         inode_buf = (struct ext2_inode *)
647                         malloc(EXT2_INODE_SIZE(current_fs->super));
648         if (!inode_buf) {
649                 fprintf(stderr, "do_stat: can't allocate buffer\n");
650                 return;
651         }
652
653         if (common_inode_args_process(argc, argv, &inode, 0)) {
654                 free(inode_buf);
655                 return;
656         }
657
658         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
659                                         EXT2_INODE_SIZE(current_fs->super))) {
660                 free(inode_buf);
661                 return;
662         }
663
664         dump_inode(inode, inode_buf);
665         free(inode_buf);
666         return;
667 }
668
669 void do_chroot(int argc, char *argv[])
670 {
671         ext2_ino_t inode;
672         int retval;
673
674         if (common_inode_args_process(argc, argv, &inode, 0))
675                 return;
676
677         retval = ext2fs_check_directory(current_fs, inode);
678         if (retval)  {
679                 com_err(argv[1], retval, 0);
680                 return;
681         }
682         root = inode;
683 }
684
685 void do_clri(int argc, char *argv[])
686 {
687         ext2_ino_t inode;
688         struct ext2_inode inode_buf;
689
690         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
691                 return;
692
693         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
694                 return;
695         memset(&inode_buf, 0, sizeof(inode_buf));
696         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
697                 return;
698 }
699
700 void do_freei(int argc, char *argv[])
701 {
702         ext2_ino_t inode;
703
704         if (common_inode_args_process(argc, argv, &inode,
705                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
706                 return;
707
708         if (!ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
709                 com_err(argv[0], 0, "Warning: inode already clear");
710         ext2fs_unmark_inode_bitmap(current_fs->inode_map,inode);
711         ext2fs_mark_ib_dirty(current_fs);
712 }
713
714 void do_seti(int argc, char *argv[])
715 {
716         ext2_ino_t inode;
717
718         if (common_inode_args_process(argc, argv, &inode,
719                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
720                 return;
721
722         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
723                 com_err(argv[0], 0, "Warning: inode already set");
724         ext2fs_mark_inode_bitmap(current_fs->inode_map,inode);
725         ext2fs_mark_ib_dirty(current_fs);
726 }
727
728 void do_testi(int argc, char *argv[])
729 {
730         ext2_ino_t inode;
731
732         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
733                 return;
734
735         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
736                 printf("Inode %u is marked in use\n", inode);
737         else
738                 printf("Inode %u is not in use\n", inode);
739 }
740
741 void do_freeb(int argc, char *argv[])
742 {
743         blk_t block;
744         blk_t count = 1;
745
746         if (common_block_args_process(argc, argv, &block, &count))
747                 return;
748         if (check_fs_read_write(argv[0]))
749                 return;
750         while (count-- > 0) {
751                 if (!ext2fs_test_block_bitmap(current_fs->block_map,block))
752                         com_err(argv[0], 0, "Warning: block %u already clear",
753                                 block);
754                 ext2fs_unmark_block_bitmap(current_fs->block_map,block);
755                 block++;
756         }
757         ext2fs_mark_bb_dirty(current_fs);
758 }
759
760 void do_setb(int argc, char *argv[])
761 {
762         blk_t block;
763         blk_t count = 1;
764
765         if (common_block_args_process(argc, argv, &block, &count))
766                 return;
767         if (check_fs_read_write(argv[0]))
768                 return;
769         while (count-- > 0) {
770                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
771                         com_err(argv[0], 0, "Warning: block %u already set",
772                                 block);
773                 ext2fs_mark_block_bitmap(current_fs->block_map,block);
774                 block++;
775         }
776         ext2fs_mark_bb_dirty(current_fs);
777 }
778
779 void do_testb(int argc, char *argv[])
780 {
781         blk_t block;
782         blk_t count = 1;
783
784         if (common_block_args_process(argc, argv, &block, &count))
785                 return;
786         while (count-- > 0) {
787                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
788                         printf("Block %u marked in use\n", block);
789                 else
790                         printf("Block %u not in use\n", block);
791                 block++;
792         }
793 }
794
795 static void modify_u8(char *com, const char *prompt,
796                       const char *format, __u8 *val)
797 {
798         char buf[200];
799         unsigned long v;
800         char *tmp;
801
802         sprintf(buf, format, *val);
803         printf("%30s    [%s] ", prompt, buf);
804         if (!fgets(buf, sizeof(buf), stdin))
805                 return;
806         if (buf[strlen (buf) - 1] == '\n')
807                 buf[strlen (buf) - 1] = '\0';
808         if (!buf[0])
809                 return;
810         v = strtoul(buf, &tmp, 0);
811         if (*tmp)
812                 com_err(com, 0, "Bad value - %s", buf);
813         else
814                 *val = v;
815 }
816
817 static void modify_u16(char *com, const char *prompt,
818                        const char *format, __u16 *val)
819 {
820         char buf[200];
821         unsigned long v;
822         char *tmp;
823
824         sprintf(buf, format, *val);
825         printf("%30s    [%s] ", prompt, buf);
826         if (!fgets(buf, sizeof(buf), stdin))
827                 return;
828         if (buf[strlen (buf) - 1] == '\n')
829                 buf[strlen (buf) - 1] = '\0';
830         if (!buf[0])
831                 return;
832         v = strtoul(buf, &tmp, 0);
833         if (*tmp)
834                 com_err(com, 0, "Bad value - %s", buf);
835         else
836                 *val = v;
837 }
838
839 static void modify_u32(char *com, const char *prompt,
840                        const char *format, __u32 *val)
841 {
842         char buf[200];
843         unsigned long v;
844         char *tmp;
845
846         sprintf(buf, format, *val);
847         printf("%30s    [%s] ", prompt, buf);
848         if (!fgets(buf, sizeof(buf), stdin))
849                 return;
850         if (buf[strlen (buf) - 1] == '\n')
851                 buf[strlen (buf) - 1] = '\0';
852         if (!buf[0])
853                 return;
854         v = strtoul(buf, &tmp, 0);
855         if (*tmp)
856                 com_err(com, 0, "Bad value - %s", buf);
857         else
858                 *val = v;
859 }
860
861
862 void do_modify_inode(int argc, char *argv[])
863 {
864         struct ext2_inode inode;
865         ext2_ino_t      inode_num;
866         int             i;
867         unsigned char   *frag, *fsize;
868         char            buf[80];
869         int             os;
870         const char      *hex_format = "0x%x";
871         const char      *octal_format = "0%o";
872         const char      *decimal_format = "%d";
873         const char      *unsignedlong_format = "%lu";
874         
875         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
876                 return;
877
878         os = current_fs->super->s_creator_os;
879
880         if (debugfs_read_inode(inode_num, &inode, argv[1]))
881                 return;
882         
883         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
884         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
885         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
886         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
887         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
888         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
889         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
890         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
891         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
892         if (os == EXT2_OS_LINUX)
893                 modify_u16(argv[0], "Block count high", unsignedlong_format, 
894                            &inode.osd2.linux2.l_i_blocks_hi);
895         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
896         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
897         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
898 #if 0
899         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
900 #endif
901         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
902         if (LINUX_S_ISDIR(inode.i_mode))
903                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
904         else
905                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
906
907         if (os == EXT2_OS_HURD)
908                 modify_u32(argv[0], "Translator Block",
909                             decimal_format, &inode.osd1.hurd1.h_i_translator);
910         
911         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
912         switch (os) {
913             case EXT2_OS_HURD:
914                 frag = &inode.osd2.hurd2.h_i_frag;
915                 fsize = &inode.osd2.hurd2.h_i_fsize;
916                 break;
917             default:
918                 frag = fsize = 0;
919         }
920         if (frag)
921                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
922         if (fsize)
923                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
924
925         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
926                 sprintf(buf, "Direct Block #%d", i);
927                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
928         }
929         modify_u32(argv[0], "Indirect Block", decimal_format,
930                     &inode.i_block[EXT2_IND_BLOCK]);    
931         modify_u32(argv[0], "Double Indirect Block", decimal_format,
932                     &inode.i_block[EXT2_DIND_BLOCK]);
933         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
934                     &inode.i_block[EXT2_TIND_BLOCK]);
935         if (debugfs_write_inode(inode_num, &inode, argv[1]))
936                 return;
937 }
938
939 void do_change_working_dir(int argc, char *argv[])
940 {
941         ext2_ino_t      inode;
942         int             retval;
943         
944         if (common_inode_args_process(argc, argv, &inode, 0))
945                 return;
946
947         retval = ext2fs_check_directory(current_fs, inode);
948         if (retval) {
949                 com_err(argv[1], retval, 0);
950                 return;
951         }
952         cwd = inode;
953         return;
954 }
955
956 void do_print_working_directory(int argc, char *argv[])
957 {
958         int     retval;
959         char    *pathname = NULL;
960         
961         if (common_args_process(argc, argv, 1, 1,
962                                 "print_working_directory", "", 0))
963                 return;
964
965         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
966         if (retval) {
967                 com_err(argv[0], retval,
968                         "while trying to get pathname of cwd");
969         }
970         printf("[pwd]   INODE: %6u  PATH: %s\n",
971                cwd, pathname ? pathname : "NULL");
972         if (pathname) {
973                 free(pathname);
974                 pathname = NULL;
975         }
976         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
977         if (retval) {
978                 com_err(argv[0], retval,
979                         "while trying to get pathname of root");
980         }
981         printf("[root]  INODE: %6u  PATH: %s\n",
982                root, pathname ? pathname : "NULL");
983         if (pathname) {
984                 free(pathname);
985                 pathname = NULL;
986         }
987         return;
988 }
989
990 /*
991  * Given a mode, return the ext2 file type
992  */
993 static int ext2_file_type(unsigned int mode)
994 {
995         if (LINUX_S_ISREG(mode))
996                 return EXT2_FT_REG_FILE;
997
998         if (LINUX_S_ISDIR(mode))
999                 return EXT2_FT_DIR;
1000         
1001         if (LINUX_S_ISCHR(mode))
1002                 return EXT2_FT_CHRDEV;
1003         
1004         if (LINUX_S_ISBLK(mode))
1005                 return EXT2_FT_BLKDEV;
1006         
1007         if (LINUX_S_ISLNK(mode))
1008                 return EXT2_FT_SYMLINK;
1009
1010         if (LINUX_S_ISFIFO(mode))
1011                 return EXT2_FT_FIFO;
1012         
1013         if (LINUX_S_ISSOCK(mode))
1014                 return EXT2_FT_SOCK;
1015         
1016         return 0;
1017 }
1018
1019 static void make_link(char *sourcename, char *destname)
1020 {
1021         ext2_ino_t      ino;
1022         struct ext2_inode inode;
1023         int             retval;
1024         ext2_ino_t      dir;
1025         char            *dest, *cp, *base_name;
1026
1027         /*
1028          * Get the source inode
1029          */
1030         ino = string_to_inode(sourcename);
1031         if (!ino)
1032                 return;
1033         base_name = strrchr(sourcename, '/');
1034         if (base_name)
1035                 base_name++;
1036         else
1037                 base_name = sourcename;
1038         /*
1039          * Figure out the destination.  First see if it exists and is
1040          * a directory.  
1041          */
1042         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1043                 dest = base_name;
1044         else {
1045                 /*
1046                  * OK, it doesn't exist.  See if it is
1047                  * '<dir>/basename' or 'basename'
1048                  */
1049                 cp = strrchr(destname, '/');
1050                 if (cp) {
1051                         *cp = 0;
1052                         dir = string_to_inode(destname);
1053                         if (!dir)
1054                                 return;
1055                         dest = cp+1;
1056                 } else {
1057                         dir = cwd;
1058                         dest = destname;
1059                 }
1060         }
1061
1062         if (debugfs_read_inode(ino, &inode, sourcename))
1063                 return;
1064         
1065         retval = ext2fs_link(current_fs, dir, dest, ino, 
1066                              ext2_file_type(inode.i_mode));
1067         if (retval)
1068                 com_err("make_link", retval, 0);
1069         return;
1070 }
1071
1072
1073 void do_link(int argc, char *argv[])
1074 {
1075         if (common_args_process(argc, argv, 3, 3, "link",
1076                                 "<source file> <dest_name>", CHECK_FS_RW))
1077                 return;
1078
1079         make_link(argv[1], argv[2]);
1080 }
1081
1082 static int mark_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1083                             int blockcnt EXT2FS_ATTR((unused)), 
1084                             void *private EXT2FS_ATTR((unused)))
1085 {
1086         blk_t   block;
1087
1088         block = *blocknr;
1089         ext2fs_block_alloc_stats(fs, block, +1);
1090         return 0;
1091 }
1092
1093 void do_undel(int argc, char *argv[])
1094 {
1095         ext2_ino_t      ino;
1096         struct ext2_inode inode;
1097
1098         if (common_args_process(argc, argv, 2, 3, "undelete",
1099                                 "<inode_num> [dest_name]",
1100                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1101                 return;
1102
1103         ino = string_to_inode(argv[1]);
1104         if (!ino)
1105                 return;
1106
1107         if (debugfs_read_inode(ino, &inode, argv[1]))
1108                 return;
1109
1110         if (ext2fs_test_inode_bitmap(current_fs->inode_map, ino)) {
1111                 com_err(argv[1], 0, "Inode is not marked as deleted");
1112                 return;
1113         }
1114
1115         /*
1116          * XXX this function doesn't handle changing the links count on the
1117          * parent directory when undeleting a directory.  
1118          */
1119         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1120         inode.i_dtime = 0;
1121
1122         if (debugfs_write_inode(ino, &inode, argv[0]))
1123                 return;
1124
1125         ext2fs_block_iterate(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL,
1126                              mark_blocks_proc, NULL);
1127
1128         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1129
1130         if (argc > 2)
1131                 make_link(argv[1], argv[2]);
1132 }
1133
1134 static void unlink_file_by_name(char *filename)
1135 {
1136         int             retval;
1137         ext2_ino_t      dir;
1138         char            *base_name;
1139         
1140         base_name = strrchr(filename, '/');
1141         if (base_name) {
1142                 *base_name++ = '\0';
1143                 dir = string_to_inode(filename);
1144                 if (!dir)
1145                         return;
1146         } else {
1147                 dir = cwd;
1148                 base_name = filename;
1149         }
1150         retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
1151         if (retval)
1152                 com_err("unlink_file_by_name", retval, 0);
1153         return;
1154 }
1155
1156 void do_unlink(int argc, char *argv[])
1157 {
1158         if (common_args_process(argc, argv, 2, 2, "link",
1159                                 "<pathname>", CHECK_FS_RW))
1160                 return;
1161
1162         unlink_file_by_name(argv[1]);
1163 }
1164
1165 void do_find_free_block(int argc, char *argv[])
1166 {
1167         blk_t   free_blk, goal, first_free = 0;
1168         int             count;
1169         errcode_t       retval;
1170         char            *tmp;
1171         
1172         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1173                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1174                 return;
1175         }
1176         if (check_fs_open(argv[0]))
1177                 return;
1178
1179         if (argc > 1) {
1180                 count = strtol(argv[1],&tmp,0);
1181                 if (*tmp) {
1182                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1183                         return;
1184                 }
1185         } else
1186                 count = 1;
1187
1188         if (argc > 2) {
1189                 goal = strtol(argv[2], &tmp, 0);
1190                 if (*tmp) {
1191                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1192                         return;
1193                 }
1194         }
1195         else
1196                 goal = current_fs->super->s_first_data_block;
1197
1198         printf("Free blocks found: ");
1199         free_blk = goal - 1;    
1200         while (count-- > 0) {
1201                 retval = ext2fs_new_block(current_fs, free_blk + 1, 0,
1202                                           &free_blk);
1203                 if (first_free) {
1204                         if (first_free == free_blk)
1205                                 break;
1206                 } else
1207                         first_free = free_blk;
1208                 if (retval) {
1209                         com_err("ext2fs_new_block", retval, 0);
1210                         return;
1211                 } else
1212                         printf("%u ", free_blk);
1213         }
1214         printf("\n");
1215 }
1216
1217 void do_find_free_inode(int argc, char *argv[])
1218 {
1219         ext2_ino_t      free_inode, dir;
1220         int             mode;
1221         int             retval;
1222         char            *tmp;
1223         
1224         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1225                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1226                 return;
1227         }
1228         if (check_fs_open(argv[0]))
1229                 return;
1230
1231         if (argc > 1) {
1232                 dir = strtol(argv[1], &tmp, 0);
1233                 if (*tmp) {
1234                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1235                         return;
1236                 }
1237         }
1238         else
1239                 dir = root;
1240         if (argc > 2) {
1241                 mode = strtol(argv[2], &tmp, 0);
1242                 if (*tmp) {
1243                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1244                         return;
1245                 }
1246         } else
1247                 mode = 010755;
1248
1249         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1250         if (retval)
1251                 com_err("ext2fs_new_inode", retval, 0);
1252         else
1253                 printf("Free inode found: %u\n", free_inode);
1254 }
1255
1256 static errcode_t copy_file(int fd, ext2_ino_t newfile)
1257 {
1258         ext2_file_t     e2_file;
1259         errcode_t       retval;
1260         int             got;
1261         unsigned int    written;
1262         char            buf[8192];
1263         char            *ptr;
1264
1265         retval = ext2fs_file_open(current_fs, newfile,
1266                                   EXT2_FILE_WRITE, &e2_file);
1267         if (retval)
1268                 return retval;
1269
1270         while (1) {
1271                 got = read(fd, buf, sizeof(buf));
1272                 if (got == 0)
1273                         break;
1274                 if (got < 0) {
1275                         retval = errno;
1276                         goto fail;
1277                 }
1278                 ptr = buf;
1279                 while (got > 0) {
1280                         retval = ext2fs_file_write(e2_file, ptr,
1281                                                    got, &written);
1282                         if (retval)
1283                                 goto fail;
1284
1285                         got -= written;
1286                         ptr += written;
1287                 }
1288         }
1289         retval = ext2fs_file_close(e2_file);
1290         return retval;
1291
1292 fail:
1293         (void) ext2fs_file_close(e2_file);
1294         return retval;
1295 }
1296
1297
1298 void do_write(int argc, char *argv[])
1299 {
1300         int             fd;
1301         struct stat     statbuf;
1302         ext2_ino_t      newfile;
1303         errcode_t       retval;
1304         struct ext2_inode inode;
1305
1306         if (common_args_process(argc, argv, 3, 3, "write",
1307                                 "<native file> <new file>", CHECK_FS_RW))
1308                 return;
1309
1310         fd = open(argv[1], O_RDONLY);
1311         if (fd < 0) {
1312                 com_err(argv[1], errno, 0);
1313                 return;
1314         }
1315         if (fstat(fd, &statbuf) < 0) {
1316                 com_err(argv[1], errno, 0);
1317                 close(fd);
1318                 return;
1319         }
1320
1321         retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1322         if (retval == 0) {
1323                 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1324                 close(fd);
1325                 return;
1326         }
1327
1328         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1329         if (retval) {
1330                 com_err(argv[0], retval, 0);
1331                 close(fd);
1332                 return;
1333         }
1334         printf("Allocated inode: %u\n", newfile);
1335         retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1336                              EXT2_FT_REG_FILE);
1337         if (retval == EXT2_ET_DIR_NO_SPACE) {
1338                 retval = ext2fs_expand_dir(current_fs, cwd);
1339                 if (retval) {
1340                         com_err(argv[0], retval, "while expanding directory");
1341                         return;
1342                 }
1343                 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1344                                      EXT2_FT_REG_FILE);
1345         }
1346         if (retval) {
1347                 com_err(argv[2], retval, 0);
1348                 close(fd);
1349                 return;
1350         }
1351         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1352                 com_err(argv[0], 0, "Warning: inode already set");
1353         ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1354         memset(&inode, 0, sizeof(inode));
1355         inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
1356         inode.i_atime = inode.i_ctime = inode.i_mtime = 
1357                 current_fs->now ? current_fs->now : time(0);
1358         inode.i_links_count = 1;
1359         inode.i_size = statbuf.st_size;
1360         if (debugfs_write_new_inode(newfile, &inode, argv[0])) {
1361                 close(fd);
1362                 return;
1363         }
1364         if (LINUX_S_ISREG(inode.i_mode)) {
1365                 retval = copy_file(fd, newfile);
1366                 if (retval)
1367                         com_err("copy_file", retval, 0);
1368         }
1369         close(fd);
1370 }
1371
1372 void do_mknod(int argc, char *argv[])
1373 {
1374         unsigned long   mode, major, minor;
1375         ext2_ino_t      newfile;
1376         errcode_t       retval;
1377         struct ext2_inode inode;
1378         int             filetype, nr;
1379
1380         if (check_fs_open(argv[0]))
1381                 return;
1382         if (argc < 3 || argv[2][1]) {
1383         usage:
1384                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1385                 return;
1386         }
1387         mode = minor = major = 0;
1388         switch (argv[2][0]) {
1389                 case 'p':
1390                         mode = LINUX_S_IFIFO;
1391                         filetype = EXT2_FT_FIFO;
1392                         nr = 3;
1393                         break;
1394                 case 'c':
1395                         mode = LINUX_S_IFCHR;
1396                         filetype = EXT2_FT_CHRDEV;
1397                         nr = 5;
1398                         break;
1399                 case 'b':
1400                         mode = LINUX_S_IFBLK;
1401                         filetype = EXT2_FT_BLKDEV;
1402                         nr = 5;
1403                         break;
1404                 default:
1405                         filetype = 0;
1406                         nr = 0;
1407         }
1408         if (nr == 5) {
1409                 major = strtoul(argv[3], argv+3, 0);
1410                 minor = strtoul(argv[4], argv+4, 0);
1411                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1412                         nr = 0;
1413         }
1414         if (argc != nr)
1415                 goto usage;
1416         if (check_fs_read_write(argv[0]))
1417                 return;
1418         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1419         if (retval) {
1420                 com_err(argv[0], retval, 0);
1421                 return;
1422         }
1423         printf("Allocated inode: %u\n", newfile);
1424         retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1425         if (retval == EXT2_ET_DIR_NO_SPACE) {
1426                 retval = ext2fs_expand_dir(current_fs, cwd);
1427                 if (retval) {
1428                         com_err(argv[0], retval, "while expanding directory");
1429                         return;
1430                 }
1431                 retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
1432                                      filetype);
1433         }
1434         if (retval) {
1435                 com_err(argv[1], retval, 0);
1436                 return;
1437         }
1438         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1439                 com_err(argv[0], 0, "Warning: inode already set");
1440         ext2fs_mark_inode_bitmap(current_fs->inode_map, newfile);
1441         ext2fs_mark_ib_dirty(current_fs);
1442         memset(&inode, 0, sizeof(inode));
1443         inode.i_mode = mode;
1444         inode.i_atime = inode.i_ctime = inode.i_mtime = 
1445                 current_fs->now ? current_fs->now : time(0);
1446         if ((major < 256) && (minor < 256)) {
1447                 inode.i_block[0] = major*256+minor;
1448                 inode.i_block[1] = 0;
1449         } else {
1450                 inode.i_block[0] = 0;
1451                 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
1452         }
1453         inode.i_links_count = 1;
1454         if (debugfs_write_new_inode(newfile, &inode, argv[0]))
1455                 return;
1456 }
1457
1458 void do_mkdir(int argc, char *argv[])
1459 {
1460         char    *cp;
1461         ext2_ino_t      parent;
1462         char    *name;
1463         errcode_t retval;
1464
1465         if (common_args_process(argc, argv, 2, 2, "mkdir",
1466                                 "<filename>", CHECK_FS_RW))
1467                 return;
1468
1469         cp = strrchr(argv[1], '/');
1470         if (cp) {
1471                 *cp = 0;
1472                 parent = string_to_inode(argv[1]);
1473                 if (!parent) {
1474                         com_err(argv[1], ENOENT, 0);
1475                         return;
1476                 }
1477                 name = cp+1;
1478         } else {
1479                 parent = cwd;
1480                 name = argv[1];
1481         }
1482
1483 try_again:
1484         retval = ext2fs_mkdir(current_fs, parent, 0, name);
1485         if (retval == EXT2_ET_DIR_NO_SPACE) {
1486                 retval = ext2fs_expand_dir(current_fs, parent);
1487                 if (retval) {
1488                         com_err("argv[0]", retval, "while expanding directory");
1489                         return;
1490                 }
1491                 goto try_again;
1492         }
1493         if (retval) {
1494                 com_err("ext2fs_mkdir", retval, 0);
1495                 return;
1496         }
1497
1498 }
1499
1500 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1501                                int blockcnt EXT2FS_ATTR((unused)), 
1502                                void *private EXT2FS_ATTR((unused)))
1503 {
1504         blk_t   block;
1505
1506         block = *blocknr;
1507         ext2fs_block_alloc_stats(fs, block, -1);
1508         return 0;
1509 }
1510
1511 static void kill_file_by_inode(ext2_ino_t inode)
1512 {
1513         struct ext2_inode inode_buf;
1514
1515         if (debugfs_read_inode(inode, &inode_buf, 0))
1516                 return;
1517         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1518         if (debugfs_write_inode(inode, &inode_buf, 0))
1519                 return;
1520         if (!ext2fs_inode_has_valid_blocks(&inode_buf))
1521                 return;
1522
1523         ext2fs_block_iterate(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
1524                              release_blocks_proc, NULL);
1525         printf("\n");
1526         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1527                                   LINUX_S_ISDIR(inode_buf.i_mode));
1528 }
1529
1530
1531 void do_kill_file(int argc, char *argv[])
1532 {
1533         ext2_ino_t inode_num;
1534
1535         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1536                 return;
1537
1538         kill_file_by_inode(inode_num);
1539 }
1540
1541 void do_rm(int argc, char *argv[])
1542 {
1543         int retval;
1544         ext2_ino_t inode_num;
1545         struct ext2_inode inode;
1546
1547         if (common_args_process(argc, argv, 2, 2, "rm",
1548                                 "<filename>", CHECK_FS_RW))
1549                 return;
1550
1551         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1552         if (retval) {
1553                 com_err(argv[0], retval, "while trying to resolve filename");
1554                 return;
1555         }
1556
1557         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1558                 return;
1559
1560         if (LINUX_S_ISDIR(inode.i_mode)) {
1561                 com_err(argv[0], 0, "file is a directory");
1562                 return;
1563         }
1564
1565         --inode.i_links_count;
1566         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1567                 return;
1568
1569         unlink_file_by_name(argv[1]);
1570         if (inode.i_links_count == 0)
1571                 kill_file_by_inode(inode_num);
1572 }
1573
1574 struct rd_struct {
1575         ext2_ino_t      parent;
1576         int             empty;
1577 };
1578
1579 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1580                       int       entry EXT2FS_ATTR((unused)),
1581                       struct ext2_dir_entry *dirent,
1582                       int       offset EXT2FS_ATTR((unused)),
1583                       int       blocksize EXT2FS_ATTR((unused)),
1584                       char      *buf EXT2FS_ATTR((unused)),
1585                       void      *private)
1586 {
1587         struct rd_struct *rds = (struct rd_struct *) private;
1588
1589         if (dirent->inode == 0)
1590                 return 0;
1591         if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1592                 return 0;
1593         if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1594             (dirent->name[1] == '.')) {
1595                 rds->parent = dirent->inode;
1596                 return 0;
1597         }
1598         rds->empty = 0;
1599         return 0;
1600 }
1601         
1602 void do_rmdir(int argc, char *argv[])
1603 {
1604         int retval;
1605         ext2_ino_t inode_num;
1606         struct ext2_inode inode;
1607         struct rd_struct rds;
1608
1609         if (common_args_process(argc, argv, 2, 2, "rmdir",
1610                                 "<filename>", CHECK_FS_RW))
1611                 return;
1612
1613         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1614         if (retval) {
1615                 com_err(argv[0], retval, "while trying to resolve filename");
1616                 return;
1617         }
1618
1619         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1620                 return;
1621
1622         if (!LINUX_S_ISDIR(inode.i_mode)) {
1623                 com_err(argv[0], 0, "file is not a directory");
1624                 return;
1625         }
1626
1627         rds.parent = 0;
1628         rds.empty = 1;
1629
1630         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1631                                     0, rmdir_proc, &rds);
1632         if (retval) {
1633                 com_err(argv[0], retval, "while iterating over directory");
1634                 return;
1635         }
1636         if (rds.empty == 0) {
1637                 com_err(argv[0], 0, "directory not empty");
1638                 return;
1639         }
1640
1641         inode.i_links_count = 0;
1642         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1643                 return;
1644
1645         unlink_file_by_name(argv[1]);
1646         kill_file_by_inode(inode_num);
1647
1648         if (rds.parent) {
1649                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1650                         return;
1651                 if (inode.i_links_count > 1)
1652                         inode.i_links_count--;
1653                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1654                         return;
1655         }
1656 }
1657
1658 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)), 
1659                             char *argv[] EXT2FS_ATTR((unused)))
1660 {
1661         FILE *out = stdout;
1662
1663         if (current_fs)
1664                 fprintf(out, "Open mode: read-%s\n",
1665                         current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1666         fprintf(out, "Filesystem in use: %s\n",
1667                 current_fs ? current_fs->device_name : "--none--");
1668 }
1669
1670 void do_expand_dir(int argc, char *argv[])
1671 {
1672         ext2_ino_t inode;
1673         int retval;
1674
1675         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1676                 return;
1677
1678         retval = ext2fs_expand_dir(current_fs, inode);
1679         if (retval)
1680                 com_err("ext2fs_expand_dir", retval, 0);
1681         return;
1682 }
1683
1684 void do_features(int argc, char *argv[])
1685 {
1686         int     i;
1687         
1688         if (check_fs_open(argv[0]))
1689                 return;
1690
1691         if ((argc != 1) && check_fs_read_write(argv[0]))
1692                 return;
1693         for (i=1; i < argc; i++) {
1694                 if (e2p_edit_feature(argv[i],
1695                                      &current_fs->super->s_feature_compat, 0))
1696                         com_err(argv[0], 0, "Unknown feature: %s\n",
1697                                 argv[i]);
1698                 else
1699                         ext2fs_mark_super_dirty(current_fs);
1700         }
1701         print_features(current_fs->super, stdout);
1702 }
1703
1704 void do_bmap(int argc, char *argv[])
1705 {
1706         ext2_ino_t      ino;
1707         blk_t           blk, pblk;
1708         int             err;
1709         errcode_t       errcode;
1710         
1711         if (common_args_process(argc, argv, 3, 3, argv[0],
1712                                 "<file> logical_blk", 0))
1713                 return;
1714
1715         ino = string_to_inode(argv[1]);
1716         if (!ino)
1717                 return;
1718         blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
1719
1720         errcode = ext2fs_bmap(current_fs, ino, 0, 0, 0, blk, &pblk);
1721         if (errcode) {
1722                 com_err("argv[0]", errcode,
1723                         "while mapping logical block %u\n", blk);
1724                 return;
1725         }
1726         printf("%u\n", pblk);
1727 }
1728
1729 void do_imap(int argc, char *argv[])
1730 {
1731         ext2_ino_t      ino;
1732         unsigned long   group, block, block_nr, offset;
1733
1734         if (common_args_process(argc, argv, 2, 2, argv[0],
1735                                 "<file>", 0))
1736                 return;
1737         ino = string_to_inode(argv[1]);
1738         if (!ino)
1739                 return;
1740
1741         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
1742         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
1743                 EXT2_INODE_SIZE(current_fs->super);
1744         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
1745         if (!current_fs->group_desc[(unsigned)group].bg_inode_table) {
1746                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
1747                         group);
1748                 return;
1749         }
1750         block_nr = current_fs->group_desc[(unsigned)group].bg_inode_table + 
1751                 block;
1752         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
1753
1754         printf("Inode %d is part of block group %lu\n"
1755                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
1756                block_nr, offset);
1757
1758 }
1759
1760 void do_set_current_time(int argc, char *argv[])
1761 {
1762         time_t now;
1763
1764         if (common_args_process(argc, argv, 2, 2, argv[0],
1765                                 "<time>", 0))
1766                 return;
1767
1768         now = string_to_time(argv[1]);
1769         if (now == ((time_t) -1)) {
1770                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
1771                         argv[1]);
1772                 return;
1773
1774         } else {
1775                 printf("Setting current time to %s\n", time_to_string(now));
1776                 current_fs->now = now;
1777         }
1778 }
1779
1780 static int source_file(const char *cmd_file, int sci_idx)
1781 {
1782         FILE            *f;
1783         char            buf[256];
1784         char            *cp;
1785         int             exit_status = 0;
1786         int             retval;
1787
1788         if (strcmp(cmd_file, "-") == 0)
1789                 f = stdin;
1790         else {
1791                 f = fopen(cmd_file, "r");
1792                 if (!f) {
1793                         perror(cmd_file);
1794                         exit(1);
1795                 }
1796         }
1797         setbuf(stdout, NULL);
1798         setbuf(stderr, NULL);
1799         while (!feof(f)) {
1800                 if (fgets(buf, sizeof(buf), f) == NULL)
1801                         break;
1802                 cp = strchr(buf, '\n');
1803                 if (cp)
1804                         *cp = 0;
1805                 cp = strchr(buf, '\r');
1806                 if (cp)
1807                         *cp = 0;
1808                 printf("debugfs: %s\n", buf);
1809                 retval = ss_execute_line(sci_idx, buf);
1810                 if (retval) {
1811                         ss_perror(sci_idx, retval, buf);
1812                         exit_status++;
1813                 }
1814         }
1815         return exit_status;
1816 }
1817
1818 int main(int argc, char **argv)
1819 {
1820         int             retval;
1821         int             sci_idx;
1822         const char      *usage = "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]";
1823         int             c;
1824         int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES;
1825         char            *request = 0;
1826         int             exit_status = 0;
1827         char            *cmd_file = 0;
1828         blk_t           superblock = 0;
1829         blk_t           blocksize = 0;
1830         int             catastrophic = 0;
1831         char            *data_filename = 0;
1832         
1833         if (debug_prog_name == 0)
1834                 debug_prog_name = "debugfs";
1835
1836         add_error_table(&et_ext2_error_table);
1837         fprintf (stderr, "%s %s (%s)\n", debug_prog_name,
1838                  E2FSPROGS_VERSION, E2FSPROGS_DATE);
1839
1840         while ((c = getopt (argc, argv, "iwcR:f:b:s:Vd:")) != EOF) {
1841                 switch (c) {
1842                 case 'R':
1843                         request = optarg;
1844                         break;
1845                 case 'f':
1846                         cmd_file = optarg;
1847                         break;
1848                 case 'd':
1849                         data_filename = optarg;
1850                         break;
1851                 case 'i':
1852                         open_flags |= EXT2_FLAG_IMAGE_FILE;
1853                         break;
1854                 case 'w':
1855                         open_flags |= EXT2_FLAG_RW;
1856                         break;
1857                 case 'b':
1858                         blocksize = parse_ulong(optarg, argv[0], 
1859                                                 "block size", 0);
1860                         break;
1861                 case 's':
1862                         superblock = parse_ulong(optarg, argv[0], 
1863                                                  "superblock number", 0);
1864                         break;
1865                 case 'c':
1866                         catastrophic = 1;
1867                         break;
1868                 case 'V':
1869                         /* Print version number and exit */
1870                         fprintf(stderr, "\tUsing %s\n",
1871                                 error_message(EXT2_ET_BASE));
1872                         exit(0);
1873                 default:
1874                         com_err(argv[0], 0, usage, debug_prog_name);
1875                         return 1;
1876                 }
1877         }
1878         if (optind < argc)
1879                 open_filesystem(argv[optind], open_flags,
1880                                 superblock, blocksize, catastrophic,
1881                                 data_filename);
1882         
1883         sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL,
1884                                        &debug_cmds, &retval);
1885         if (retval) {
1886                 ss_perror(sci_idx, retval, "creating invocation");
1887                 exit(1);
1888         }
1889         ss_get_readline(sci_idx);
1890
1891         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
1892         if (retval) {
1893                 ss_perror(sci_idx, retval, "adding standard requests");
1894                 exit (1);
1895         }
1896         if (extra_cmds)
1897                 ss_add_request_table (sci_idx, extra_cmds, 1, &retval);
1898         if (retval) {
1899                 ss_perror(sci_idx, retval, "adding extra requests");
1900                 exit (1);
1901         }
1902         if (request) {
1903                 retval = 0;
1904                 retval = ss_execute_line(sci_idx, request);
1905                 if (retval) {
1906                         ss_perror(sci_idx, retval, request);
1907                         exit_status++;
1908                 }
1909         } else if (cmd_file) {
1910                 exit_status = source_file(cmd_file, sci_idx);
1911         } else {
1912                 ss_listen(sci_idx);
1913         }
1914
1915         if (current_fs)
1916                 close_filesystem();
1917         
1918         remove_error_table(&et_ext2_error_table);
1919         return exit_status;
1920 }