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[COVERITY] Handle potential case in debugfs if ext2fs_get_pathname returns NULL
[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
42 ext2_filsys     current_fs = NULL;
43 ext2_ino_t      root, cwd;
44
45 static void open_filesystem(char *device, int open_flags, blk_t superblock,
46                             blk_t blocksize, int catastrophic, 
47                             char *data_filename)
48 {
49         int     retval;
50         io_channel data_io = 0;
51
52         if (superblock != 0 && blocksize == 0) {
53                 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
54                 current_fs = NULL;
55                 return;
56         }
57
58         if (data_filename) {
59                 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
60                         com_err(device, 0, 
61                                 "The -d option is only valid when reading an e2image file");
62                         current_fs = NULL;
63                         return;
64                 }
65                 retval = unix_io_manager->open(data_filename, 0, &data_io);
66                 if (retval) {
67                         com_err(data_filename, 0, "while opening data source");
68                         current_fs = NULL;
69                         return;
70                 }
71         }
72
73         if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
74                 com_err(device, 0,
75                         "opening read-only because of catastrophic mode");
76                 open_flags &= ~EXT2_FLAG_RW;
77         }
78         
79         retval = ext2fs_open(device, open_flags, superblock, blocksize,
80                              unix_io_manager, &current_fs);
81         if (retval) {
82                 com_err(device, retval, "while opening filesystem");
83                 current_fs = NULL;
84                 return;
85         }
86
87         if (catastrophic)
88                 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
89         else {
90                 retval = ext2fs_read_inode_bitmap(current_fs);
91                 if (retval) {
92                         com_err(device, retval, "while reading inode bitmap");
93                         goto errout;
94                 }
95                 retval = ext2fs_read_block_bitmap(current_fs);
96                 if (retval) {
97                         com_err(device, retval, "while reading block bitmap");
98                         goto errout;
99                 }
100         }
101
102         if (data_io) {
103                 retval = ext2fs_set_data_io(current_fs, data_io);
104                 if (retval) {
105                         com_err(device, retval, 
106                                 "while setting data source");
107                         goto errout;
108                 }
109         }
110
111         root = cwd = EXT2_ROOT_INO;
112         return;
113
114 errout:
115         retval = ext2fs_close(current_fs);
116         if (retval)
117                 com_err(device, retval, "while trying to close filesystem");
118         current_fs = NULL;
119 }
120
121 void do_open_filesys(int argc, char **argv)
122 {
123         int     c, err;
124         int     catastrophic = 0;
125         blk_t   superblock = 0;
126         blk_t   blocksize = 0;
127         int     open_flags = EXT2_FLAG_SOFTSUPP_FEATURES;
128         char    *data_filename = 0;
129         
130         reset_getopt();
131         while ((c = getopt (argc, argv, "iwfecb:s:d:")) != EOF) {
132                 switch (c) {
133                 case 'i':
134                         open_flags |= EXT2_FLAG_IMAGE_FILE;
135                         break;
136                 case 'w':
137                         open_flags |= EXT2_FLAG_RW;
138                         break;
139                 case 'f':
140                         open_flags |= EXT2_FLAG_FORCE;
141                         break;
142                 case 'e':
143                         open_flags |= EXT2_FLAG_EXCLUSIVE;
144                         break;
145                 case 'c':
146                         catastrophic = 1;
147                         break;
148                 case 'd':
149                         data_filename = optarg;
150                         break;
151                 case 'b':
152                         blocksize = parse_ulong(optarg, argv[0],
153                                                 "block size", &err);
154                         if (err)
155                                 return;
156                         break;
157                 case 's':
158                         superblock = parse_ulong(optarg, argv[0],
159                                                  "superblock number", &err);
160                         if (err)
161                                 return;
162                         break;
163                 default:
164                         goto print_usage;
165                 }
166         }
167         if (optind != argc-1) {
168                 goto print_usage;
169         }
170         if (check_fs_not_open(argv[0]))
171                 return;
172         open_filesystem(argv[optind], open_flags,
173                         superblock, blocksize, catastrophic, 
174                         data_filename);
175         return;
176
177 print_usage:
178         fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] "
179                 "[-c] [-w] <device>\n", argv[0]);
180 }
181
182 void do_lcd(int argc, char **argv)
183 {
184         if (argc != 2) {
185                 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>");
186                 return;
187         }
188
189         if (chdir(argv[1]) == -1) {
190                 com_err(argv[0], errno,
191                         "while trying to change native directory to %s",
192                         argv[1]);
193                 return;
194         }
195 }
196
197 static void close_filesystem(NOARGS)
198 {
199         int     retval;
200         
201         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
202                 retval = ext2fs_write_inode_bitmap(current_fs);
203                 if (retval)
204                         com_err("ext2fs_write_inode_bitmap", retval, 0);
205         }
206         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
207                 retval = ext2fs_write_block_bitmap(current_fs);
208                 if (retval)
209                         com_err("ext2fs_write_block_bitmap", retval, 0);
210         }
211         retval = ext2fs_close(current_fs);
212         if (retval)
213                 com_err("ext2fs_close", retval, 0);
214         current_fs = NULL;
215         return;
216 }
217
218 void do_close_filesys(int argc, char **argv)
219 {
220         if (common_args_process(argc, argv, 1, 1, "close_filesys", "", 0))
221                 return;
222         close_filesystem();
223 }
224
225 void do_init_filesys(int argc, char **argv)
226 {
227         struct ext2_super_block param;
228         errcode_t       retval;
229         int             err;
230         
231         if (common_args_process(argc, argv, 3, 3, "initialize",
232                                 "<device> <blocksize>", CHECK_FS_NOTOPEN))
233                 return;
234
235         memset(&param, 0, sizeof(struct ext2_super_block));
236         param.s_blocks_count = parse_ulong(argv[2], argv[0],
237                                            "blocks count", &err);
238         if (err)
239                 return;
240         retval = ext2fs_initialize(argv[1], 0, &param,
241                                    unix_io_manager, &current_fs);
242         if (retval) {
243                 com_err(argv[1], retval, "while initializing filesystem");
244                 current_fs = NULL;
245                 return;
246         }
247         root = cwd = EXT2_ROOT_INO;
248         return;
249 }
250
251 static void print_features(struct ext2_super_block * s, FILE *f)
252 {
253         int     i, j, printed=0;
254         __u32   *mask = &s->s_feature_compat, m;
255
256         fputs("Filesystem features:", f);
257         for (i=0; i <3; i++,mask++) {
258                 for (j=0,m=1; j < 32; j++, m<<=1) {
259                         if (*mask & m) {
260                                 fprintf(f, " %s", e2p_feature2string(i, m));
261                                 printed++;
262                         }
263                 }
264         }
265         if (printed == 0)
266                 fputs("(none)", f);
267         fputs("\n", f);
268 }
269
270 static void print_bg_opts(struct ext2_group_desc *gdp, int mask,
271                           const char *str, int *first, FILE *f)
272 {
273         if (gdp->bg_flags & mask) {
274                 if (*first) {
275                         fputs("           [", f);
276                         *first = 0;
277                 } else
278                         fputs(", ", f);
279                 fputs(str, f);
280         }
281 }
282
283 void do_show_super_stats(int argc, char *argv[])
284 {
285         dgrp_t  i;
286         FILE    *out;
287         struct ext2_group_desc *gdp;
288         int     c, header_only = 0;
289         int     numdirs = 0, first;
290
291         reset_getopt();
292         while ((c = getopt (argc, argv, "h")) != EOF) {
293                 switch (c) {
294                 case 'h':
295                         header_only++;
296                         break;
297                 default:
298                         goto print_usage;
299                 }
300         }
301         if (optind != argc) {
302                 goto print_usage;
303         }
304         if (check_fs_open(argv[0]))
305                 return;
306         out = open_pager();
307
308         list_super2(current_fs->super, out);
309         for (i=0; i < current_fs->group_desc_count; i++)
310                 numdirs += current_fs->group_desc[i].bg_used_dirs_count;
311         fprintf(out, "Directories:              %d\n", numdirs);
312         
313         if (header_only) {
314                 close_pager(out);
315                 return;
316         }
317         
318         gdp = &current_fs->group_desc[0];
319         for (i = 0; i < current_fs->group_desc_count; i++, gdp++) {
320                 fprintf(out, " Group %2d: block bitmap at %u, "
321                         "inode bitmap at %u, "
322                         "inode table at %u\n"
323                         "           %d free %s, "
324                         "%d free %s, "
325                         "%d used %s\n",
326                         i, gdp->bg_block_bitmap,
327                         gdp->bg_inode_bitmap, gdp->bg_inode_table,
328                         gdp->bg_free_blocks_count,
329                         gdp->bg_free_blocks_count != 1 ? "blocks" : "block",
330                         gdp->bg_free_inodes_count,
331                         gdp->bg_free_inodes_count != 1 ? "inodes" : "inode",
332                         gdp->bg_used_dirs_count,
333                         gdp->bg_used_dirs_count != 1 ? "directories"
334                                 : "directory");
335                 first = 1;
336                 print_bg_opts(gdp, EXT2_BG_INODE_UNINIT, "Inode not init",
337                               &first, out);
338                 print_bg_opts(gdp, EXT2_BG_BLOCK_UNINIT, "Block not init",
339                               &first, out);
340                 if (!first)
341                         fputs("]\n", out);
342         }
343         close_pager(out);
344         return;
345 print_usage:
346         fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
347 }
348
349 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)), 
350                       char **argv EXT2FS_ATTR((unused)))
351 {
352         if (check_fs_open(argv[0]))
353                 return;
354         if (check_fs_read_write(argv[0]))
355                 return;
356
357         if (argv[1] && !strcmp(argv[1], "-clean"))
358                 current_fs->super->s_state |= EXT2_VALID_FS;
359         else
360                 current_fs->super->s_state &= ~EXT2_VALID_FS;
361         ext2fs_mark_super_dirty(current_fs);
362 }
363
364 struct list_blocks_struct {
365         FILE            *f;
366         e2_blkcnt_t     total;
367         blk_t           first_block, last_block;
368         e2_blkcnt_t     first_bcnt, last_bcnt;
369         e2_blkcnt_t     first;
370 };
371
372 static void finish_range(struct list_blocks_struct *lb)
373 {
374         if (lb->first_block == 0)
375                 return;
376         if (lb->first)
377                 lb->first = 0;
378         else
379                 fprintf(lb->f, ", ");
380         if (lb->first_block == lb->last_block)
381                 fprintf(lb->f, "(%lld):%u", lb->first_bcnt, lb->first_block);
382         else
383                 fprintf(lb->f, "(%lld-%lld):%u-%u", lb->first_bcnt,
384                         lb->last_bcnt, lb->first_block, lb->last_block);
385         lb->first_block = 0;
386 }
387
388 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)), 
389                             blk_t *blocknr, e2_blkcnt_t blockcnt, 
390                             blk_t ref_block EXT2FS_ATTR((unused)),
391                             int ref_offset EXT2FS_ATTR((unused)), 
392                             void *private)
393 {
394         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
395
396         lb->total++;
397         if (blockcnt >= 0) {
398                 /*
399                  * See if we can add on to the existing range (if it exists)
400                  */
401                 if (lb->first_block &&
402                     (lb->last_block+1 == *blocknr) &&
403                     (lb->last_bcnt+1 == blockcnt)) {
404                         lb->last_block = *blocknr;
405                         lb->last_bcnt = blockcnt;
406                         return 0;
407                 }
408                 /*
409                  * Start a new range.
410                  */
411                 finish_range(lb);
412                 lb->first_block = lb->last_block = *blocknr;
413                 lb->first_bcnt = lb->last_bcnt = blockcnt;
414                 return 0;
415         }
416         /*
417          * Not a normal block.  Always force a new range.
418          */
419         finish_range(lb);
420         if (lb->first)
421                 lb->first = 0;
422         else
423                 fprintf(lb->f, ", ");
424         if (blockcnt == -1)
425                 fprintf(lb->f, "(IND):%u", *blocknr);
426         else if (blockcnt == -2)
427                 fprintf(lb->f, "(DIND):%u", *blocknr);
428         else if (blockcnt == -3)
429                 fprintf(lb->f, "(TIND):%u", *blocknr);
430         return 0;
431 }
432
433 static void dump_xattr_string(FILE *out, const char *str, int len)
434 {
435         int printable = 1;
436         int i;
437         
438         /* check is string printable? */
439         for (i = 0; i < len; i++)
440                 if (!isprint(str[i])) {
441                         printable = 0;
442                         break;
443                 }
444
445         for (i = 0; i < len; i++)
446                 if (printable)
447                         fprintf(out, "%c", (unsigned char)str[i]);
448                 else
449                         fprintf(out, "%02x ", (unsigned char)str[i]);
450 }
451
452 static void internal_dump_inode_extra(FILE *out, const char *prefix,
453                                       ext2_ino_t inode_num, 
454                                       struct ext2_inode_large *inode)
455 {
456         struct ext2_ext_attr_entry *entry;
457         __u32 *magic;
458         char *start, *end;
459         unsigned int storage_size;
460
461         fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
462         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
463                         EXT2_GOOD_OLD_INODE_SIZE) {
464                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
465                                 inode->i_extra_isize);
466                 return;
467         }
468         storage_size = EXT2_INODE_SIZE(current_fs->super) -
469                         EXT2_GOOD_OLD_INODE_SIZE -
470                         inode->i_extra_isize;
471         magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
472                         inode->i_extra_isize);
473         if (*magic == EXT2_EXT_ATTR_MAGIC) {
474                 fprintf(out, "Extended attributes stored in inode body: \n");
475                 end = (char *) inode + EXT2_INODE_SIZE(current_fs->super);
476                 start = (char *) magic + sizeof(__u32);
477                 entry = (struct ext2_ext_attr_entry *) start;
478                 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
479                         struct ext2_ext_attr_entry *next =
480                                 EXT2_EXT_ATTR_NEXT(entry);
481                         if (entry->e_value_size > storage_size ||
482                                         (char *) next >= end) {
483                                 fprintf(out, "invalid EA entry in inode\n");
484                                 return;
485                         }
486                         fprintf(out, "  ");
487                         dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry), 
488                                           entry->e_name_len);
489                         fprintf(out, " = \"");
490                         dump_xattr_string(out, start + entry->e_value_offs,
491                                                 entry->e_value_size);
492                         fprintf(out, "\" (%u)\n", entry->e_value_size);
493                         entry = next;
494                 }
495         }
496 }
497
498 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
499 {
500         struct list_blocks_struct lb;
501
502         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
503         lb.total = 0;
504         lb.first_block = 0;
505         lb.f = f;
506         lb.first = 1;
507         ext2fs_block_iterate2(current_fs, inode, 0, NULL,
508                              list_blocks_proc, (void *)&lb);
509         finish_range(&lb);
510         if (lb.total)
511                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, lb.total);
512         fprintf(f,"\n");
513 }
514
515
516 void internal_dump_inode(FILE *out, const char *prefix,
517                          ext2_ino_t inode_num, struct ext2_inode *inode,
518                          int do_dump_blocks)
519 {
520         const char *i_type;
521         char frag, fsize;
522         int os = current_fs->super->s_creator_os;
523         
524         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
525         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
526         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
527         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
528         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
529         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
530         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
531         else i_type = "bad type";
532         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
533         fprintf(out, "%sMode:  %04o   Flags: 0x%x   Generation: %u\n",
534                 prefix, 
535                 inode->i_mode & 0777, inode->i_flags, inode->i_generation);
536         fprintf(out, "%sUser: %5d   Group: %5d   Size: ",
537                 prefix, inode->i_uid, inode->i_gid);
538         if (LINUX_S_ISREG(inode->i_mode)) {
539                 __u64 i_size = (inode->i_size |
540                                 ((unsigned long long)inode->i_size_high << 32));
541
542                 fprintf(out, "%lld\n", i_size);
543         } else
544                 fprintf(out, "%d\n", inode->i_size);
545         if (os == EXT2_OS_HURD)
546                 fprintf(out,
547                         "%sFile ACL: %d    Directory ACL: %d Translator: %d\n",
548                         prefix,
549                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
550                         inode->osd1.hurd1.h_i_translator);
551         else
552                 fprintf(out, "%sFile ACL: %d    Directory ACL: %d\n",
553                         prefix,
554                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
555         if (os == EXT2_OS_LINUX) 
556                 fprintf(out, "%sLinks: %d   Blockcount: %llu\n",
557                         prefix, inode->i_links_count, 
558                         (((unsigned long long) 
559                           inode->osd2.linux2.l_i_blocks_hi << 32)) + 
560                         inode->i_blocks);
561         else
562                 fprintf(out, "%sLinks: %d   Blockcount: %u\n",
563                         prefix, inode->i_links_count, inode->i_blocks);
564         switch (os) {
565             case EXT2_OS_HURD:
566                 frag = inode->osd2.hurd2.h_i_frag;
567                 fsize = inode->osd2.hurd2.h_i_fsize;
568                 break;
569             case EXT2_OS_MASIX:
570                 frag = inode->osd2.masix2.m_i_frag;
571                 fsize = inode->osd2.masix2.m_i_fsize;
572                 break;
573             default:
574                 frag = fsize = 0;
575         }
576         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
577                 prefix, inode->i_faddr, frag, fsize);
578         fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
579                 time_to_string(inode->i_ctime));
580         fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
581                 time_to_string(inode->i_atime));
582         fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
583                 time_to_string(inode->i_mtime));
584         if (inode->i_dtime) 
585           fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
586                   time_to_string(inode->i_dtime));
587         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
588                 internal_dump_inode_extra(out, prefix, inode_num,
589                                           (struct ext2_inode_large *) inode);
590         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
591                 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
592                         (int) inode->i_size, (char *)inode->i_block);
593         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
594                 int major, minor;
595                 const char *devnote;
596
597                 if (inode->i_block[0]) {
598                         major = (inode->i_block[0] >> 8) & 255;
599                         minor = inode->i_block[0] & 255;
600                         devnote = "";
601                 } else {
602                         major = (inode->i_block[1] & 0xfff00) >> 8;
603                         minor = ((inode->i_block[1] & 0xff) | 
604                                  ((inode->i_block[1] >> 12) & 0xfff00));
605                         devnote = "(New-style) ";
606                 }
607                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n", 
608                         devnote, major, minor, major, minor);
609         }
610         else if (do_dump_blocks)
611                 dump_blocks(out, prefix, inode_num);
612 }
613
614 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
615 {
616         FILE    *out;
617         
618         out = open_pager();
619         internal_dump_inode(out, "", inode_num, inode, 1);
620         close_pager(out);
621 }
622
623 void do_stat(int argc, char *argv[])
624 {
625         ext2_ino_t      inode;
626         struct ext2_inode * inode_buf;
627
628         if (check_fs_open(argv[0]))
629                 return;
630
631         inode_buf = (struct ext2_inode *)
632                         malloc(EXT2_INODE_SIZE(current_fs->super));
633         if (!inode_buf) {
634                 fprintf(stderr, "do_stat: can't allocate buffer\n");
635                 return;
636         }
637
638         if (common_inode_args_process(argc, argv, &inode, 0)) {
639                 free(inode_buf);
640                 return;
641         }
642
643         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
644                                         EXT2_INODE_SIZE(current_fs->super))) {
645                 free(inode_buf);
646                 return;
647         }
648
649         dump_inode(inode, inode_buf);
650         free(inode_buf);
651         return;
652 }
653
654 void do_chroot(int argc, char *argv[])
655 {
656         ext2_ino_t inode;
657         int retval;
658
659         if (common_inode_args_process(argc, argv, &inode, 0))
660                 return;
661
662         retval = ext2fs_check_directory(current_fs, inode);
663         if (retval)  {
664                 com_err(argv[1], retval, 0);
665                 return;
666         }
667         root = inode;
668 }
669
670 void do_clri(int argc, char *argv[])
671 {
672         ext2_ino_t inode;
673         struct ext2_inode inode_buf;
674
675         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
676                 return;
677
678         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
679                 return;
680         memset(&inode_buf, 0, sizeof(inode_buf));
681         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
682                 return;
683 }
684
685 void do_freei(int argc, char *argv[])
686 {
687         ext2_ino_t inode;
688
689         if (common_inode_args_process(argc, argv, &inode,
690                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
691                 return;
692
693         if (!ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
694                 com_err(argv[0], 0, "Warning: inode already clear");
695         ext2fs_unmark_inode_bitmap(current_fs->inode_map,inode);
696         ext2fs_mark_ib_dirty(current_fs);
697 }
698
699 void do_seti(int argc, char *argv[])
700 {
701         ext2_ino_t inode;
702
703         if (common_inode_args_process(argc, argv, &inode,
704                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
705                 return;
706
707         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
708                 com_err(argv[0], 0, "Warning: inode already set");
709         ext2fs_mark_inode_bitmap(current_fs->inode_map,inode);
710         ext2fs_mark_ib_dirty(current_fs);
711 }
712
713 void do_testi(int argc, char *argv[])
714 {
715         ext2_ino_t inode;
716
717         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
718                 return;
719
720         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
721                 printf("Inode %u is marked in use\n", inode);
722         else
723                 printf("Inode %u is not in use\n", inode);
724 }
725
726 void do_freeb(int argc, char *argv[])
727 {
728         blk_t block;
729         int count = 1;
730
731         if (common_block_args_process(argc, argv, &block, &count))
732                 return;
733         if (check_fs_read_write(argv[0]))
734                 return;
735         while (count-- > 0) {
736                 if (!ext2fs_test_block_bitmap(current_fs->block_map,block))
737                         com_err(argv[0], 0, "Warning: block %u already clear",
738                                 block);
739                 ext2fs_unmark_block_bitmap(current_fs->block_map,block);
740                 block++;
741         }
742         ext2fs_mark_bb_dirty(current_fs);
743 }
744
745 void do_setb(int argc, char *argv[])
746 {
747         blk_t block;
748         int count = 1;
749
750         if (common_block_args_process(argc, argv, &block, &count))
751                 return;
752         if (check_fs_read_write(argv[0]))
753                 return;
754         while (count-- > 0) {
755                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
756                         com_err(argv[0], 0, "Warning: block %u already set",
757                                 block);
758                 ext2fs_mark_block_bitmap(current_fs->block_map,block);
759                 block++;
760         }
761         ext2fs_mark_bb_dirty(current_fs);
762 }
763
764 void do_testb(int argc, char *argv[])
765 {
766         blk_t block;
767         int count = 1;
768
769         if (common_block_args_process(argc, argv, &block, &count))
770                 return;
771         while (count-- > 0) {
772                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
773                         printf("Block %u marked in use\n", block);
774                 else
775                         printf("Block %u not in use\n", block);
776                 block++;
777         }
778 }
779
780 static void modify_u8(char *com, const char *prompt,
781                       const char *format, __u8 *val)
782 {
783         char buf[200];
784         unsigned long v;
785         char *tmp;
786
787         sprintf(buf, format, *val);
788         printf("%30s    [%s] ", prompt, buf);
789         fgets(buf, sizeof(buf), stdin);
790         if (buf[strlen (buf) - 1] == '\n')
791                 buf[strlen (buf) - 1] = '\0';
792         if (!buf[0])
793                 return;
794         v = strtoul(buf, &tmp, 0);
795         if (*tmp)
796                 com_err(com, 0, "Bad value - %s", buf);
797         else
798                 *val = v;
799 }
800
801 static void modify_u16(char *com, const char *prompt,
802                        const char *format, __u16 *val)
803 {
804         char buf[200];
805         unsigned long v;
806         char *tmp;
807
808         sprintf(buf, format, *val);
809         printf("%30s    [%s] ", prompt, buf);
810         fgets(buf, sizeof(buf), stdin);
811         if (buf[strlen (buf) - 1] == '\n')
812                 buf[strlen (buf) - 1] = '\0';
813         if (!buf[0])
814                 return;
815         v = strtoul(buf, &tmp, 0);
816         if (*tmp)
817                 com_err(com, 0, "Bad value - %s", buf);
818         else
819                 *val = v;
820 }
821
822 static void modify_u32(char *com, const char *prompt,
823                        const char *format, __u32 *val)
824 {
825         char buf[200];
826         unsigned long v;
827         char *tmp;
828
829         sprintf(buf, format, *val);
830         printf("%30s    [%s] ", prompt, buf);
831         fgets(buf, sizeof(buf), stdin);
832         if (buf[strlen (buf) - 1] == '\n')
833                 buf[strlen (buf) - 1] = '\0';
834         if (!buf[0])
835                 return;
836         v = strtoul(buf, &tmp, 0);
837         if (*tmp)
838                 com_err(com, 0, "Bad value - %s", buf);
839         else
840                 *val = v;
841 }
842
843
844 void do_modify_inode(int argc, char *argv[])
845 {
846         struct ext2_inode inode;
847         ext2_ino_t      inode_num;
848         int             i;
849         unsigned char   *frag, *fsize;
850         char            buf[80];
851         int             os;
852         const char      *hex_format = "0x%x";
853         const char      *octal_format = "0%o";
854         const char      *decimal_format = "%d";
855         const char      *unsignedlong_format = "%lu";
856         
857         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
858                 return;
859
860         os = current_fs->super->s_creator_os;
861
862         if (debugfs_read_inode(inode_num, &inode, argv[1]))
863                 return;
864         
865         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
866         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
867         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
868         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
869         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
870         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
871         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
872         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
873         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
874         if (os == EXT2_OS_LINUX)
875                 modify_u16(argv[0], "Block count high", unsignedlong_format, 
876                            &inode.osd2.linux2.l_i_blocks_hi);
877         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
878         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
879         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
880 #if 0
881         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
882 #endif
883         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
884         if (LINUX_S_ISDIR(inode.i_mode))
885                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
886         else
887                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
888
889         if (os == EXT2_OS_HURD)
890                 modify_u32(argv[0], "Translator Block",
891                             decimal_format, &inode.osd1.hurd1.h_i_translator);
892         
893         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
894         switch (os) {
895             case EXT2_OS_HURD:
896                 frag = &inode.osd2.hurd2.h_i_frag;
897                 fsize = &inode.osd2.hurd2.h_i_fsize;
898                 break;
899             case EXT2_OS_MASIX:
900                 frag = &inode.osd2.masix2.m_i_frag;
901                 fsize = &inode.osd2.masix2.m_i_fsize;
902                 break;
903             default:
904                 frag = fsize = 0;
905         }
906         if (frag)
907                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
908         if (fsize)
909                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
910
911         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
912                 sprintf(buf, "Direct Block #%d", i);
913                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
914         }
915         modify_u32(argv[0], "Indirect Block", decimal_format,
916                     &inode.i_block[EXT2_IND_BLOCK]);    
917         modify_u32(argv[0], "Double Indirect Block", decimal_format,
918                     &inode.i_block[EXT2_DIND_BLOCK]);
919         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
920                     &inode.i_block[EXT2_TIND_BLOCK]);
921         if (debugfs_write_inode(inode_num, &inode, argv[1]))
922                 return;
923 }
924
925 void do_change_working_dir(int argc, char *argv[])
926 {
927         ext2_ino_t      inode;
928         int             retval;
929         
930         if (common_inode_args_process(argc, argv, &inode, 0))
931                 return;
932
933         retval = ext2fs_check_directory(current_fs, inode);
934         if (retval) {
935                 com_err(argv[1], retval, 0);
936                 return;
937         }
938         cwd = inode;
939         return;
940 }
941
942 void do_print_working_directory(int argc, char *argv[])
943 {
944         int     retval;
945         char    *pathname = NULL;
946         
947         if (common_args_process(argc, argv, 1, 1,
948                                 "print_working_directory", "", 0))
949                 return;
950
951         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
952         if (retval) {
953                 com_err(argv[0], retval,
954                         "while trying to get pathname of cwd");
955         }
956         printf("[pwd]   INODE: %6u  PATH: %s\n",
957                cwd, pathname ? pathname : "NULL");
958         if (pathname) {
959                 free(pathname);
960                 pathname = NULL;
961         }
962         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
963         if (retval) {
964                 com_err(argv[0], retval,
965                         "while trying to get pathname of root");
966         }
967         printf("[root]  INODE: %6u  PATH: %s\n",
968                root, pathname ? pathname : "NULL");
969         if (pathname) {
970                 free(pathname);
971                 pathname = NULL;
972         }
973         return;
974 }
975
976 /*
977  * Given a mode, return the ext2 file type
978  */
979 static int ext2_file_type(unsigned int mode)
980 {
981         if (LINUX_S_ISREG(mode))
982                 return EXT2_FT_REG_FILE;
983
984         if (LINUX_S_ISDIR(mode))
985                 return EXT2_FT_DIR;
986         
987         if (LINUX_S_ISCHR(mode))
988                 return EXT2_FT_CHRDEV;
989         
990         if (LINUX_S_ISBLK(mode))
991                 return EXT2_FT_BLKDEV;
992         
993         if (LINUX_S_ISLNK(mode))
994                 return EXT2_FT_SYMLINK;
995
996         if (LINUX_S_ISFIFO(mode))
997                 return EXT2_FT_FIFO;
998         
999         if (LINUX_S_ISSOCK(mode))
1000                 return EXT2_FT_SOCK;
1001         
1002         return 0;
1003 }
1004
1005 static void make_link(char *sourcename, char *destname)
1006 {
1007         ext2_ino_t      ino;
1008         struct ext2_inode inode;
1009         int             retval;
1010         ext2_ino_t      dir;
1011         char            *dest, *cp, *basename;
1012
1013         /*
1014          * Get the source inode
1015          */
1016         ino = string_to_inode(sourcename);
1017         if (!ino)
1018                 return;
1019         basename = strrchr(sourcename, '/');
1020         if (basename)
1021                 basename++;
1022         else
1023                 basename = sourcename;
1024         /*
1025          * Figure out the destination.  First see if it exists and is
1026          * a directory.  
1027          */
1028         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1029                 dest = basename;
1030         else {
1031                 /*
1032                  * OK, it doesn't exist.  See if it is
1033                  * '<dir>/basename' or 'basename'
1034                  */
1035                 cp = strrchr(destname, '/');
1036                 if (cp) {
1037                         *cp = 0;
1038                         dir = string_to_inode(destname);
1039                         if (!dir)
1040                                 return;
1041                         dest = cp+1;
1042                 } else {
1043                         dir = cwd;
1044                         dest = destname;
1045                 }
1046         }
1047
1048         if (debugfs_read_inode(ino, &inode, sourcename))
1049                 return;
1050         
1051         retval = ext2fs_link(current_fs, dir, dest, ino, 
1052                              ext2_file_type(inode.i_mode));
1053         if (retval)
1054                 com_err("make_link", retval, 0);
1055         return;
1056 }
1057
1058
1059 void do_link(int argc, char *argv[])
1060 {
1061         if (common_args_process(argc, argv, 3, 3, "link",
1062                                 "<source file> <dest_name>", CHECK_FS_RW))
1063                 return;
1064
1065         make_link(argv[1], argv[2]);
1066 }
1067
1068 static int mark_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1069                             int blockcnt EXT2FS_ATTR((unused)), 
1070                             void *private EXT2FS_ATTR((unused)))
1071 {
1072         blk_t   block;
1073
1074         block = *blocknr;
1075         ext2fs_block_alloc_stats(fs, block, +1);
1076         return 0;
1077 }
1078
1079 void do_undel(int argc, char *argv[])
1080 {
1081         ext2_ino_t      ino;
1082         struct ext2_inode inode;
1083
1084         if (common_args_process(argc, argv, 3, 3, "undelete",
1085                                 "<inode_num> <dest_name>",
1086                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1087                 return;
1088
1089         ino = string_to_inode(argv[1]);
1090         if (!ino)
1091                 return;
1092
1093         if (debugfs_read_inode(ino, &inode, argv[1]))
1094                 return;
1095
1096         if (ext2fs_test_inode_bitmap(current_fs->inode_map, ino)) {
1097                 com_err(argv[1], 0, "Inode is not marked as deleted");
1098                 return;
1099         }
1100
1101         /*
1102          * XXX this function doesn't handle changing the links count on the
1103          * parent directory when undeleting a directory.  
1104          */
1105         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1106         inode.i_dtime = 0;
1107
1108         if (debugfs_write_inode(ino, &inode, argv[0]))
1109                 return;
1110
1111         ext2fs_block_iterate(current_fs, ino, 0, NULL,
1112                              mark_blocks_proc, NULL);
1113
1114         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1115
1116         make_link(argv[1], argv[2]);
1117 }
1118
1119 static void unlink_file_by_name(char *filename)
1120 {
1121         int             retval;
1122         ext2_ino_t      dir;
1123         char            *basename;
1124         
1125         basename = strrchr(filename, '/');
1126         if (basename) {
1127                 *basename++ = '\0';
1128                 dir = string_to_inode(filename);
1129                 if (!dir)
1130                         return;
1131         } else {
1132                 dir = cwd;
1133                 basename = filename;
1134         }
1135         retval = ext2fs_unlink(current_fs, dir, basename, 0, 0);
1136         if (retval)
1137                 com_err("unlink_file_by_name", retval, 0);
1138         return;
1139 }
1140
1141 void do_unlink(int argc, char *argv[])
1142 {
1143         if (common_args_process(argc, argv, 2, 2, "link",
1144                                 "<pathname>", CHECK_FS_RW))
1145                 return;
1146
1147         unlink_file_by_name(argv[1]);
1148 }
1149
1150 void do_find_free_block(int argc, char *argv[])
1151 {
1152         blk_t   free_blk, goal;
1153         int             count;
1154         errcode_t       retval;
1155         char            *tmp;
1156         
1157         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1158                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1159                 return;
1160         }
1161         if (check_fs_open(argv[0]))
1162                 return;
1163
1164         if (argc > 1) {
1165                 count = strtol(argv[1],&tmp,0);
1166                 if (*tmp) {
1167                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1168                         return;
1169                 }
1170         } else
1171                 count = 1;
1172
1173         if (argc > 2) {
1174                 goal = strtol(argv[2], &tmp, 0);
1175                 if (*tmp) {
1176                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1177                         return;
1178                 }
1179         }
1180         else
1181                 goal = current_fs->super->s_first_data_block;
1182
1183         printf("Free blocks found: ");
1184         free_blk = goal - 1;    
1185         while (count-- > 0) {
1186                 retval = ext2fs_new_block(current_fs, free_blk + 1, 0,
1187                                           &free_blk);
1188                 if (retval) {
1189                         com_err("ext2fs_new_block", retval, 0);
1190                         return;
1191                 } else
1192                         printf("%u ", free_blk);
1193         }
1194         printf("\n");
1195 }
1196
1197 void do_find_free_inode(int argc, char *argv[])
1198 {
1199         ext2_ino_t      free_inode, dir;
1200         int             mode;
1201         int             retval;
1202         char            *tmp;
1203         
1204         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1205                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1206                 return;
1207         }
1208         if (check_fs_open(argv[0]))
1209                 return;
1210
1211         if (argc > 1) {
1212                 dir = strtol(argv[1], &tmp, 0);
1213                 if (*tmp) {
1214                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1215                         return;
1216                 }
1217         }
1218         else
1219                 dir = root;
1220         if (argc > 2) {
1221                 mode = strtol(argv[2], &tmp, 0);
1222                 if (*tmp) {
1223                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1224                         return;
1225                 }
1226         } else
1227                 mode = 010755;
1228
1229         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1230         if (retval)
1231                 com_err("ext2fs_new_inode", retval, 0);
1232         else
1233                 printf("Free inode found: %u\n", free_inode);
1234 }
1235
1236 static errcode_t copy_file(int fd, ext2_ino_t newfile)
1237 {
1238         ext2_file_t     e2_file;
1239         errcode_t       retval;
1240         int             got;
1241         unsigned int    written;
1242         char            buf[8192];
1243         char            *ptr;
1244
1245         retval = ext2fs_file_open(current_fs, newfile,
1246                                   EXT2_FILE_WRITE, &e2_file);
1247         if (retval)
1248                 return retval;
1249
1250         while (1) {
1251                 got = read(fd, buf, sizeof(buf));
1252                 if (got == 0)
1253                         break;
1254                 if (got < 0) {
1255                         retval = errno;
1256                         goto fail;
1257                 }
1258                 ptr = buf;
1259                 while (got > 0) {
1260                         retval = ext2fs_file_write(e2_file, ptr,
1261                                                    got, &written);
1262                         if (retval)
1263                                 goto fail;
1264
1265                         got -= written;
1266                         ptr += written;
1267                 }
1268         }
1269         retval = ext2fs_file_close(e2_file);
1270         return retval;
1271
1272 fail:
1273         (void) ext2fs_file_close(e2_file);
1274         return retval;
1275 }
1276
1277
1278 void do_write(int argc, char *argv[])
1279 {
1280         int             fd;
1281         struct stat     statbuf;
1282         ext2_ino_t      newfile;
1283         errcode_t       retval;
1284         struct ext2_inode inode;
1285
1286         if (common_args_process(argc, argv, 3, 3, "write",
1287                                 "<native file> <new file>", CHECK_FS_RW))
1288                 return;
1289
1290         fd = open(argv[1], O_RDONLY);
1291         if (fd < 0) {
1292                 com_err(argv[1], errno, 0);
1293                 return;
1294         }
1295         if (fstat(fd, &statbuf) < 0) {
1296                 com_err(argv[1], errno, 0);
1297                 close(fd);
1298                 return;
1299         }
1300
1301         retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1302         if (retval == 0) {
1303                 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1304                 close(fd);
1305                 return;
1306         }
1307
1308         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1309         if (retval) {
1310                 com_err(argv[0], retval, 0);
1311                 close(fd);
1312                 return;
1313         }
1314         printf("Allocated inode: %u\n", newfile);
1315         retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1316                              EXT2_FT_REG_FILE);
1317         if (retval == EXT2_ET_DIR_NO_SPACE) {
1318                 retval = ext2fs_expand_dir(current_fs, cwd);
1319                 if (retval) {
1320                         com_err(argv[0], retval, "while expanding directory");
1321                         return;
1322                 }
1323                 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1324                                      EXT2_FT_REG_FILE);
1325         }
1326         if (retval) {
1327                 com_err(argv[2], retval, 0);
1328                 close(fd);
1329                 return;
1330         }
1331         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1332                 com_err(argv[0], 0, "Warning: inode already set");
1333         ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1334         memset(&inode, 0, sizeof(inode));
1335         inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
1336         inode.i_atime = inode.i_ctime = inode.i_mtime = 
1337                 current_fs->now ? current_fs->now : time(0);
1338         inode.i_links_count = 1;
1339         inode.i_size = statbuf.st_size;
1340         if (debugfs_write_new_inode(newfile, &inode, argv[0])) {
1341                 close(fd);
1342                 return;
1343         }
1344         if (LINUX_S_ISREG(inode.i_mode)) {
1345                 retval = copy_file(fd, newfile);
1346                 if (retval)
1347                         com_err("copy_file", retval, 0);
1348         }
1349         close(fd);
1350 }
1351
1352 void do_mknod(int argc, char *argv[])
1353 {
1354         unsigned long   mode, major, minor;
1355         ext2_ino_t      newfile;
1356         errcode_t       retval;
1357         struct ext2_inode inode;
1358         int             filetype, nr;
1359
1360         if (check_fs_open(argv[0]))
1361                 return;
1362         if (argc < 3 || argv[2][1]) {
1363         usage:
1364                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1365                 return;
1366         }
1367         mode = minor = major = 0;
1368         switch (argv[2][0]) {
1369                 case 'p':
1370                         mode = LINUX_S_IFIFO;
1371                         filetype = EXT2_FT_FIFO;
1372                         nr = 3;
1373                         break;
1374                 case 'c':
1375                         mode = LINUX_S_IFCHR;
1376                         filetype = EXT2_FT_CHRDEV;
1377                         nr = 5;
1378                         break;
1379                 case 'b':
1380                         mode = LINUX_S_IFBLK;
1381                         filetype = EXT2_FT_BLKDEV;
1382                         nr = 5;
1383                         break;
1384                 default:
1385                         filetype = 0;
1386                         nr = 0;
1387         }
1388         if (nr == 5) {
1389                 major = strtoul(argv[3], argv+3, 0);
1390                 minor = strtoul(argv[4], argv+4, 0);
1391                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1392                         nr = 0;
1393         }
1394         if (argc != nr)
1395                 goto usage;
1396         if (check_fs_read_write(argv[0]))
1397                 return;
1398         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1399         if (retval) {
1400                 com_err(argv[0], retval, 0);
1401                 return;
1402         }
1403         printf("Allocated inode: %u\n", newfile);
1404         retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1405         if (retval == EXT2_ET_DIR_NO_SPACE) {
1406                 retval = ext2fs_expand_dir(current_fs, cwd);
1407                 if (retval) {
1408                         com_err(argv[0], retval, "while expanding directory");
1409                         return;
1410                 }
1411                 retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
1412                                      filetype);
1413         }
1414         if (retval) {
1415                 com_err(argv[1], retval, 0);
1416                 return;
1417         }
1418         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1419                 com_err(argv[0], 0, "Warning: inode already set");
1420         ext2fs_mark_inode_bitmap(current_fs->inode_map, newfile);
1421         ext2fs_mark_ib_dirty(current_fs);
1422         memset(&inode, 0, sizeof(inode));
1423         inode.i_mode = mode;
1424         inode.i_atime = inode.i_ctime = inode.i_mtime = 
1425                 current_fs->now ? current_fs->now : time(0);
1426         if ((major < 256) && (minor < 256)) {
1427                 inode.i_block[0] = major*256+minor;
1428                 inode.i_block[1] = 0;
1429         } else {
1430                 inode.i_block[0] = 0;
1431                 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
1432         }
1433         inode.i_links_count = 1;
1434         if (debugfs_write_new_inode(newfile, &inode, argv[0]))
1435                 return;
1436 }
1437
1438 void do_mkdir(int argc, char *argv[])
1439 {
1440         char    *cp;
1441         ext2_ino_t      parent;
1442         char    *name;
1443         errcode_t retval;
1444
1445         if (common_args_process(argc, argv, 2, 2, "mkdir",
1446                                 "<filename>", CHECK_FS_RW))
1447                 return;
1448
1449         cp = strrchr(argv[1], '/');
1450         if (cp) {
1451                 *cp = 0;
1452                 parent = string_to_inode(argv[1]);
1453                 if (!parent) {
1454                         com_err(argv[1], ENOENT, 0);
1455                         return;
1456                 }
1457                 name = cp+1;
1458         } else {
1459                 parent = cwd;
1460                 name = argv[1];
1461         }
1462
1463 try_again:
1464         retval = ext2fs_mkdir(current_fs, parent, 0, name);
1465         if (retval == EXT2_ET_DIR_NO_SPACE) {
1466                 retval = ext2fs_expand_dir(current_fs, parent);
1467                 if (retval) {
1468                         com_err("argv[0]", retval, "while expanding directory");
1469                         return;
1470                 }
1471                 goto try_again;
1472         }
1473         if (retval) {
1474                 com_err("ext2fs_mkdir", retval, 0);
1475                 return;
1476         }
1477
1478 }
1479
1480 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1481                                int blockcnt EXT2FS_ATTR((unused)), 
1482                                void *private EXT2FS_ATTR((unused)))
1483 {
1484         blk_t   block;
1485
1486         block = *blocknr;
1487         ext2fs_block_alloc_stats(fs, block, -1);
1488         return 0;
1489 }
1490
1491 static void kill_file_by_inode(ext2_ino_t inode)
1492 {
1493         struct ext2_inode inode_buf;
1494
1495         if (debugfs_read_inode(inode, &inode_buf, 0))
1496                 return;
1497         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1498         if (debugfs_write_inode(inode, &inode_buf, 0))
1499                 return;
1500         if (!ext2fs_inode_has_valid_blocks(&inode_buf))
1501                 return;
1502
1503         ext2fs_block_iterate(current_fs, inode, 0, NULL,
1504                              release_blocks_proc, NULL);
1505         printf("\n");
1506         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1507                                   LINUX_S_ISDIR(inode_buf.i_mode));
1508 }
1509
1510
1511 void do_kill_file(int argc, char *argv[])
1512 {
1513         ext2_ino_t inode_num;
1514
1515         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1516                 return;
1517
1518         kill_file_by_inode(inode_num);
1519 }
1520
1521 void do_rm(int argc, char *argv[])
1522 {
1523         int retval;
1524         ext2_ino_t inode_num;
1525         struct ext2_inode inode;
1526
1527         if (common_args_process(argc, argv, 2, 2, "rm",
1528                                 "<filename>", CHECK_FS_RW))
1529                 return;
1530
1531         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1532         if (retval) {
1533                 com_err(argv[0], retval, "while trying to resolve filename");
1534                 return;
1535         }
1536
1537         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1538                 return;
1539
1540         if (LINUX_S_ISDIR(inode.i_mode)) {
1541                 com_err(argv[0], 0, "file is a directory");
1542                 return;
1543         }
1544
1545         --inode.i_links_count;
1546         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1547                 return;
1548
1549         unlink_file_by_name(argv[1]);
1550         if (inode.i_links_count == 0)
1551                 kill_file_by_inode(inode_num);
1552 }
1553
1554 struct rd_struct {
1555         ext2_ino_t      parent;
1556         int             empty;
1557 };
1558
1559 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1560                       int       entry EXT2FS_ATTR((unused)),
1561                       struct ext2_dir_entry *dirent,
1562                       int       offset EXT2FS_ATTR((unused)),
1563                       int       blocksize EXT2FS_ATTR((unused)),
1564                       char      *buf EXT2FS_ATTR((unused)),
1565                       void      *private)
1566 {
1567         struct rd_struct *rds = (struct rd_struct *) private;
1568
1569         if (dirent->inode == 0)
1570                 return 0;
1571         if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1572                 return 0;
1573         if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1574             (dirent->name[1] == '.')) {
1575                 rds->parent = dirent->inode;
1576                 return 0;
1577         }
1578         rds->empty = 0;
1579         return 0;
1580 }
1581         
1582 void do_rmdir(int argc, char *argv[])
1583 {
1584         int retval;
1585         ext2_ino_t inode_num;
1586         struct ext2_inode inode;
1587         struct rd_struct rds;
1588
1589         if (common_args_process(argc, argv, 2, 2, "rmdir",
1590                                 "<filename>", CHECK_FS_RW))
1591                 return;
1592
1593         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1594         if (retval) {
1595                 com_err(argv[0], retval, "while trying to resolve filename");
1596                 return;
1597         }
1598
1599         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1600                 return;
1601
1602         if (!LINUX_S_ISDIR(inode.i_mode)) {
1603                 com_err(argv[0], 0, "file is not a directory");
1604                 return;
1605         }
1606
1607         rds.parent = 0;
1608         rds.empty = 1;
1609
1610         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1611                                     0, rmdir_proc, &rds);
1612         if (retval) {
1613                 com_err(argv[0], retval, "while iterating over directory");
1614                 return;
1615         }
1616         if (rds.empty == 0) {
1617                 com_err(argv[0], 0, "directory not empty");
1618                 return;
1619         }
1620
1621         inode.i_links_count = 0;
1622         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1623                 return;
1624
1625         unlink_file_by_name(argv[1]);
1626         kill_file_by_inode(inode_num);
1627
1628         if (rds.parent) {
1629                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1630                         return;
1631                 if (inode.i_links_count > 1)
1632                         inode.i_links_count--;
1633                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1634                         return;
1635         }
1636 }
1637
1638 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)), 
1639                             char *argv[] EXT2FS_ATTR((unused)))
1640 {
1641         FILE *out = stdout;
1642
1643         if (current_fs)
1644                 fprintf(out, "Open mode: read-%s\n",
1645                         current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1646         fprintf(out, "Filesystem in use: %s\n",
1647                 current_fs ? current_fs->device_name : "--none--");
1648 }
1649
1650 void do_expand_dir(int argc, char *argv[])
1651 {
1652         ext2_ino_t inode;
1653         int retval;
1654
1655         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1656                 return;
1657
1658         retval = ext2fs_expand_dir(current_fs, inode);
1659         if (retval)
1660                 com_err("ext2fs_expand_dir", retval, 0);
1661         return;
1662 }
1663
1664 void do_features(int argc, char *argv[])
1665 {
1666         int     i;
1667         
1668         if (check_fs_open(argv[0]))
1669                 return;
1670
1671         if ((argc != 1) && check_fs_read_write(argv[0]))
1672                 return;
1673         for (i=1; i < argc; i++) {
1674                 if (e2p_edit_feature(argv[i],
1675                                      &current_fs->super->s_feature_compat, 0))
1676                         com_err(argv[0], 0, "Unknown feature: %s\n",
1677                                 argv[i]);
1678                 else
1679                         ext2fs_mark_super_dirty(current_fs);
1680         }
1681         print_features(current_fs->super, stdout);
1682 }
1683
1684 void do_bmap(int argc, char *argv[])
1685 {
1686         ext2_ino_t      ino;
1687         blk_t           blk, pblk;
1688         int             err;
1689         errcode_t       errcode;
1690         
1691         if (common_args_process(argc, argv, 3, 3, argv[0],
1692                                 "<file> logical_blk", 0))
1693                 return;
1694
1695         ino = string_to_inode(argv[1]);
1696         if (!ino)
1697                 return;
1698         blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
1699
1700         errcode = ext2fs_bmap(current_fs, ino, 0, 0, 0, blk, &pblk);
1701         if (errcode) {
1702                 com_err("argv[0]", errcode,
1703                         "while mapping logical block %u\n", blk);
1704                 return;
1705         }
1706         printf("%u\n", pblk);
1707 }
1708
1709 void do_imap(int argc, char *argv[])
1710 {
1711         ext2_ino_t      ino;
1712         unsigned long   group, block, block_nr, offset;
1713
1714         if (common_args_process(argc, argv, 2, 2, argv[0],
1715                                 "<file>", 0))
1716                 return;
1717         ino = string_to_inode(argv[1]);
1718         if (!ino)
1719                 return;
1720
1721         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
1722         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
1723                 EXT2_INODE_SIZE(current_fs->super);
1724         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
1725         if (!current_fs->group_desc[(unsigned)group].bg_inode_table) {
1726                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
1727                         group);
1728                 return;
1729         }
1730         block_nr = current_fs->group_desc[(unsigned)group].bg_inode_table + 
1731                 block;
1732         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
1733
1734         printf("Inode %d is part of block group %lu\n"
1735                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
1736                block_nr, offset);
1737
1738 }
1739
1740 void do_set_current_time(int argc, char *argv[])
1741 {
1742         time_t now;
1743
1744         if (common_args_process(argc, argv, 2, 2, argv[0],
1745                                 "<time>", 0))
1746                 return;
1747
1748         now = string_to_time(argv[1]);
1749         if (now == ((time_t) -1)) {
1750                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
1751                         argv[1]);
1752                 return;
1753
1754         } else {
1755                 printf("Setting current time to %s\n", time_to_string(now));
1756                 current_fs->now = now;
1757         }
1758 }
1759
1760 static int source_file(const char *cmd_file, int sci_idx)
1761 {
1762         FILE            *f;
1763         char            buf[256];
1764         char            *cp;
1765         int             exit_status = 0;
1766         int             retval;
1767
1768         if (strcmp(cmd_file, "-") == 0)
1769                 f = stdin;
1770         else {
1771                 f = fopen(cmd_file, "r");
1772                 if (!f) {
1773                         perror(cmd_file);
1774                         exit(1);
1775                 }
1776         }
1777         setbuf(stdout, NULL);
1778         setbuf(stderr, NULL);
1779         while (!feof(f)) {
1780                 if (fgets(buf, sizeof(buf), f) == NULL)
1781                         break;
1782                 cp = strchr(buf, '\n');
1783                 if (cp)
1784                         *cp = 0;
1785                 cp = strchr(buf, '\r');
1786                 if (cp)
1787                         *cp = 0;
1788                 printf("debugfs: %s\n", buf);
1789                 retval = ss_execute_line(sci_idx, buf);
1790                 if (retval) {
1791                         ss_perror(sci_idx, retval, buf);
1792                         exit_status++;
1793                 }
1794         }
1795         return exit_status;
1796 }
1797
1798 int main(int argc, char **argv)
1799 {
1800         int             retval;
1801         int             sci_idx;
1802         const char      *usage = "Usage: debugfs [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]";
1803         int             c;
1804         int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES;
1805         char            *request = 0;
1806         int             exit_status = 0;
1807         char            *cmd_file = 0;
1808         blk_t           superblock = 0;
1809         blk_t           blocksize = 0;
1810         int             catastrophic = 0;
1811         char            *data_filename = 0;
1812         
1813         add_error_table(&et_ext2_error_table);
1814         fprintf (stderr, "debugfs %s (%s)\n", E2FSPROGS_VERSION,
1815                  E2FSPROGS_DATE);
1816
1817         while ((c = getopt (argc, argv, "iwcR:f:b:s:Vd:")) != EOF) {
1818                 switch (c) {
1819                 case 'R':
1820                         request = optarg;
1821                         break;
1822                 case 'f':
1823                         cmd_file = optarg;
1824                         break;
1825                 case 'd':
1826                         data_filename = optarg;
1827                         break;
1828                 case 'i':
1829                         open_flags |= EXT2_FLAG_IMAGE_FILE;
1830                         break;
1831                 case 'w':
1832                         open_flags |= EXT2_FLAG_RW;
1833                         break;
1834                 case 'b':
1835                         blocksize = parse_ulong(optarg, argv[0], 
1836                                                 "block size", 0);
1837                         break;
1838                 case 's':
1839                         superblock = parse_ulong(optarg, argv[0], 
1840                                                  "superblock number", 0);
1841                         break;
1842                 case 'c':
1843                         catastrophic = 1;
1844                         break;
1845                 case 'V':
1846                         /* Print version number and exit */
1847                         fprintf(stderr, "\tUsing %s\n",
1848                                 error_message(EXT2_ET_BASE));
1849                         exit(0);
1850                 default:
1851                         com_err(argv[0], 0, usage);
1852                         return 1;
1853                 }
1854         }
1855         if (optind < argc)
1856                 open_filesystem(argv[optind], open_flags,
1857                                 superblock, blocksize, catastrophic,
1858                                 data_filename);
1859         
1860         sci_idx = ss_create_invocation("debugfs", "0.0", (char *) NULL,
1861                                        &debug_cmds, &retval);
1862         if (retval) {
1863                 ss_perror(sci_idx, retval, "creating invocation");
1864                 exit(1);
1865         }
1866         ss_get_readline(sci_idx);
1867
1868         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
1869         if (retval) {
1870                 ss_perror(sci_idx, retval, "adding standard requests");
1871                 exit (1);
1872         }
1873         if (request) {
1874                 retval = 0;
1875                 retval = ss_execute_line(sci_idx, request);
1876                 if (retval) {
1877                         ss_perror(sci_idx, retval, request);
1878                         exit_status++;
1879                 }
1880         } else if (cmd_file) {
1881                 exit_status = source_file(cmd_file, sci_idx);
1882         } else {
1883                 ss_listen(sci_idx);
1884         }
1885
1886         if (current_fs)
1887                 close_filesystem();
1888         
1889         remove_error_table(&et_ext2_error_table);
1890         return exit_status;
1891 }