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[tools/e2fsprogs.git] / misc / mke2fs.c
1 /*
2  * mke2fs.c - Make a ext2fs filesystem.
3  * 
4  * Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
5  *      2003, 2004, 2005 by Theodore Ts'o.
6  *
7  * %Begin-Header%
8  * This file may be redistributed under the terms of the GNU Public
9  * License.
10  * %End-Header%
11  */
12
13 /* Usage: mke2fs [options] device
14  * 
15  * The device may be a block device or a image of one, but this isn't
16  * enforced (but it's not much fun on a character device :-). 
17  */
18
19 #include <stdio.h>
20 #include <string.h>
21 #include <fcntl.h>
22 #include <ctype.h>
23 #include <time.h>
24 #ifdef __linux__
25 #include <sys/utsname.h>
26 #endif
27 #ifdef HAVE_GETOPT_H
28 #include <getopt.h>
29 #else
30 extern char *optarg;
31 extern int optind;
32 #endif
33 #ifdef HAVE_UNISTD_H
34 #include <unistd.h>
35 #endif
36 #ifdef HAVE_STDLIB_H
37 #include <stdlib.h>
38 #endif
39 #ifdef HAVE_ERRNO_H
40 #include <errno.h>
41 #endif
42 #ifdef HAVE_MNTENT_H
43 #include <mntent.h>
44 #endif
45 #include <sys/ioctl.h>
46 #include <sys/types.h>
47 #include <libgen.h>
48
49 #include "ext2fs/ext2_fs.h"
50 #include "et/com_err.h"
51 #include "uuid/uuid.h"
52 #include "e2p/e2p.h"
53 #include "ext2fs/ext2fs.h"
54 #include "util.h"
55 #include "profile.h"
56 #include "prof_err.h"
57 #include "../version.h"
58 #include "nls-enable.h"
59
60 #define STRIDE_LENGTH 8
61
62 #ifndef __sparc__
63 #define ZAP_BOOTBLOCK
64 #endif
65
66 extern int isatty(int);
67 extern FILE *fpopen(const char *cmd, const char *mode);
68
69 const char * program_name = "mke2fs";
70 const char * device_name /* = NULL */;
71
72 /* Command line options */
73 int     cflag;
74 int     verbose;
75 int     quiet;
76 int     super_only;
77 int     force;
78 int     noaction;
79 int     journal_size;
80 int     journal_flags;
81 int     lazy_itable_init;
82 char    *bad_blocks_filename;
83 __u32   fs_stride;
84
85 struct ext2_super_block fs_param;
86 char *creator_os;
87 char *volume_label;
88 char *mount_dir;
89 char *journal_device;
90 int sync_kludge;        /* Set using the MKE2FS_SYNC env. option */
91 char **fs_types;
92
93 profile_t       profile;
94
95 int sys_page_size = 4096;
96 int linux_version_code = 0;
97
98 static void usage(void)
99 {
100         fprintf(stderr, _("Usage: %s [-c|-l filename] [-b block-size] "
101         "[-f fragment-size]\n\t[-i bytes-per-inode] [-I inode-size] "
102         "[-J journal-options]\n"
103         "\t[-N number-of-inodes] [-m reserved-blocks-percentage] "
104         "[-o creator-os]\n\t[-g blocks-per-group] [-L volume-label] "
105         "[-M last-mounted-directory]\n\t[-O feature[,...]] "
106         "[-r fs-revision] [-E extended-option[,...]]\n"
107         "\t[-T fs-type] [-jnqvFSV] device [blocks-count]\n"),
108                 program_name);
109         exit(1);
110 }
111
112 static int int_log2(int arg)
113 {
114         int     l = 0;
115
116         arg >>= 1;
117         while (arg) {
118                 l++;
119                 arg >>= 1;
120         }
121         return l;
122 }
123
124 static int int_log10(unsigned int arg)
125 {
126         int     l;
127
128         for (l=0; arg ; l++)
129                 arg = arg / 10;
130         return l;
131 }
132
133 static int parse_version_number(const char *s)
134 {
135         int     major, minor, rev;
136         char    *endptr;
137         const char *cp = s;
138
139         if (!s)
140                 return 0;
141         major = strtol(cp, &endptr, 10);
142         if (cp == endptr || *endptr != '.')
143                 return 0;
144         cp = endptr + 1;
145         minor = strtol(cp, &endptr, 10);
146         if (cp == endptr || *endptr != '.')
147                 return 0;
148         cp = endptr + 1;
149         rev = strtol(cp, &endptr, 10);
150         if (cp == endptr)
151                 return 0;
152         return ((((major * 256) + minor) * 256) + rev);
153 }
154
155 /*
156  * Helper function for read_bb_file and test_disk
157  */
158 static void invalid_block(ext2_filsys fs EXT2FS_ATTR((unused)), blk_t blk)
159 {
160         fprintf(stderr, _("Bad block %u out of range; ignored.\n"), blk);
161         return;
162 }
163
164 /*
165  * Reads the bad blocks list from a file
166  */
167 static void read_bb_file(ext2_filsys fs, badblocks_list *bb_list,
168                          const char *bad_blocks_file)
169 {
170         FILE            *f;
171         errcode_t       retval;
172
173         f = fopen(bad_blocks_file, "r");
174         if (!f) {
175                 com_err("read_bad_blocks_file", errno,
176                         _("while trying to open %s"), bad_blocks_file);
177                 exit(1);
178         }
179         retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
180         fclose (f);
181         if (retval) {
182                 com_err("ext2fs_read_bb_FILE", retval,
183                         _("while reading in list of bad blocks from file"));
184                 exit(1);
185         }
186 }
187
188 /*
189  * Runs the badblocks program to test the disk
190  */
191 static void test_disk(ext2_filsys fs, badblocks_list *bb_list)
192 {
193         FILE            *f;
194         errcode_t       retval;
195         char            buf[1024];
196
197         sprintf(buf, "badblocks -b %d -X %s%s%s %u", fs->blocksize,
198                 quiet ? "" : "-s ", (cflag > 1) ? "-w " : "",
199                 fs->device_name, fs->super->s_blocks_count-1);
200         if (verbose)
201                 printf(_("Running command: %s\n"), buf);
202         f = popen(buf, "r");
203         if (!f) {
204                 com_err("popen", errno,
205                         _("while trying to run '%s'"), buf);
206                 exit(1);
207         }
208         retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
209         pclose(f);
210         if (retval) {
211                 com_err("ext2fs_read_bb_FILE", retval,
212                         _("while processing list of bad blocks from program"));
213                 exit(1);
214         }
215 }
216
217 static void handle_bad_blocks(ext2_filsys fs, badblocks_list bb_list)
218 {
219         dgrp_t                  i;
220         blk_t                   j;
221         unsigned                must_be_good;
222         blk_t                   blk;
223         badblocks_iterate       bb_iter;
224         errcode_t               retval;
225         blk_t                   group_block;
226         int                     group;
227         int                     group_bad;
228
229         if (!bb_list)
230                 return;
231         
232         /*
233          * The primary superblock and group descriptors *must* be
234          * good; if not, abort.
235          */
236         must_be_good = fs->super->s_first_data_block + 1 + fs->desc_blocks;
237         for (i = fs->super->s_first_data_block; i <= must_be_good; i++) {
238                 if (ext2fs_badblocks_list_test(bb_list, i)) {
239                         fprintf(stderr, _("Block %d in primary "
240                                 "superblock/group descriptor area bad.\n"), i);
241                         fprintf(stderr, _("Blocks %u through %u must be good "
242                                 "in order to build a filesystem.\n"),
243                                 fs->super->s_first_data_block, must_be_good);
244                         fputs(_("Aborting....\n"), stderr);
245                         exit(1);
246                 }
247         }
248
249         /*
250          * See if any of the bad blocks are showing up in the backup
251          * superblocks and/or group descriptors.  If so, issue a
252          * warning and adjust the block counts appropriately.
253          */
254         group_block = fs->super->s_first_data_block +
255                 fs->super->s_blocks_per_group;
256         
257         for (i = 1; i < fs->group_desc_count; i++) {
258                 group_bad = 0;
259                 for (j=0; j < fs->desc_blocks+1; j++) {
260                         if (ext2fs_badblocks_list_test(bb_list,
261                                                        group_block + j)) {
262                                 if (!group_bad) 
263                                         fprintf(stderr,
264 _("Warning: the backup superblock/group descriptors at block %u contain\n"
265 "       bad blocks.\n\n"),
266                                                 group_block);
267                                 group_bad++;
268                                 group = ext2fs_group_of_blk(fs, group_block+j);
269                                 fs->group_desc[group].bg_free_blocks_count++;
270                                 ext2fs_group_desc_csum_set(fs, group);
271                                 fs->super->s_free_blocks_count++;
272                         }
273                 }
274                 group_block += fs->super->s_blocks_per_group;
275         }
276         
277         /*
278          * Mark all the bad blocks as used...
279          */
280         retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter);
281         if (retval) {
282                 com_err("ext2fs_badblocks_list_iterate_begin", retval,
283                         _("while marking bad blocks as used"));
284                 exit(1);
285         }
286         while (ext2fs_badblocks_list_iterate(bb_iter, &blk)) 
287                 ext2fs_mark_block_bitmap(fs->block_map, blk);
288         ext2fs_badblocks_list_iterate_end(bb_iter);
289 }
290
291 /*
292  * These functions implement a generalized progress meter.
293  */
294 struct progress_struct {
295         char            format[20];
296         char            backup[80];
297         __u32           max;
298         int             skip_progress;
299 };
300
301 static void progress_init(struct progress_struct *progress,
302                           const char *label,__u32 max)
303 {
304         int     i;
305
306         memset(progress, 0, sizeof(struct progress_struct));
307         if (quiet)
308                 return;
309
310         /*
311          * Figure out how many digits we need
312          */
313         i = int_log10(max);
314         sprintf(progress->format, "%%%dd/%%%dld", i, i);
315         memset(progress->backup, '\b', sizeof(progress->backup)-1);
316         progress->backup[sizeof(progress->backup)-1] = 0;
317         if ((2*i)+1 < (int) sizeof(progress->backup))
318                 progress->backup[(2*i)+1] = 0;
319         progress->max = max;
320
321         progress->skip_progress = 0;
322         if (getenv("MKE2FS_SKIP_PROGRESS"))
323                 progress->skip_progress++;
324
325         fputs(label, stdout);
326         fflush(stdout);
327 }
328
329 static void progress_update(struct progress_struct *progress, __u32 val)
330 {
331         if ((progress->format[0] == 0) || progress->skip_progress)
332                 return;
333         printf(progress->format, val, progress->max);
334         fputs(progress->backup, stdout);
335 }
336
337 static void progress_close(struct progress_struct *progress)
338 {
339         if (progress->format[0] == 0)
340                 return;
341         fputs(_("done                            \n"), stdout);
342 }
343
344 static void write_inode_tables(ext2_filsys fs, int lazy_flag)
345 {
346         errcode_t       retval;
347         blk_t           blk;
348         dgrp_t          i;
349         int             num, ipb;
350         struct progress_struct progress;
351
352         if (quiet)
353                 memset(&progress, 0, sizeof(progress));
354         else
355                 progress_init(&progress, _("Writing inode tables: "),
356                               fs->group_desc_count);
357
358         for (i = 0; i < fs->group_desc_count; i++) {
359                 progress_update(&progress, i);
360                 
361                 blk = fs->group_desc[i].bg_inode_table;
362                 num = fs->inode_blocks_per_group;
363
364                 if (lazy_flag) {
365                         ipb = fs->blocksize / EXT2_INODE_SIZE(fs->super);
366                         num = ((((fs->super->s_inodes_per_group -
367                                   fs->group_desc[i].bg_itable_unused) *
368                                  EXT2_INODE_SIZE(fs->super)) +
369                                 EXT2_BLOCK_SIZE(fs->super) - 1) /
370                                EXT2_BLOCK_SIZE(fs->super));
371                 } else {
372                         /* The kernel doesn't need to zero the itable blocks */
373                         fs->group_desc[i].bg_flags |= EXT2_BG_INODE_ZEROED;
374                         ext2fs_group_desc_csum_set(fs, i);
375                 }
376                 retval = ext2fs_zero_blocks(fs, blk, num, &blk, &num);
377                 if (retval) {
378                         fprintf(stderr, _("\nCould not write %d "
379                                   "blocks in inode table starting at %u: %s\n"),
380                                 num, blk, error_message(retval));
381                         exit(1);
382                 }
383                 if (sync_kludge) {
384                         if (sync_kludge == 1)
385                                 sync();
386                         else if ((i % sync_kludge) == 0)
387                                 sync();
388                 }
389         }
390         ext2fs_zero_blocks(0, 0, 0, 0, 0);
391         progress_close(&progress);
392 }
393
394 static void create_root_dir(ext2_filsys fs)
395 {
396         errcode_t               retval;
397         struct ext2_inode       inode;
398         __u32                   uid, gid;
399
400         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0);
401         if (retval) {
402                 com_err("ext2fs_mkdir", retval, _("while creating root dir"));
403                 exit(1);
404         }
405         if (geteuid()) {
406                 retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode);
407                 if (retval) {
408                         com_err("ext2fs_read_inode", retval,
409                                 _("while reading root inode"));
410                         exit(1);
411                 }
412                 uid = getuid();
413                 inode.i_uid = uid;
414                 ext2fs_set_i_uid_high(inode, uid >> 16);
415                 if (uid) {
416                         gid = getgid();
417                         inode.i_gid = gid;
418                         ext2fs_set_i_gid_high(inode, gid >> 16);
419                 }
420                 retval = ext2fs_write_new_inode(fs, EXT2_ROOT_INO, &inode);
421                 if (retval) {
422                         com_err("ext2fs_write_inode", retval,
423                                 _("while setting root inode ownership"));
424                         exit(1);
425                 }
426         }
427 }
428
429 static void create_lost_and_found(ext2_filsys fs)
430 {
431         unsigned int            lpf_size = 0;
432         errcode_t               retval;
433         ext2_ino_t              ino;
434         const char              *name = "lost+found";
435         int                     i;
436
437         fs->umask = 077;
438         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name);
439         if (retval) {
440                 com_err("ext2fs_mkdir", retval,
441                         _("while creating /lost+found"));
442                 exit(1);
443         }
444
445         retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino);
446         if (retval) {
447                 com_err("ext2_lookup", retval,
448                         _("while looking up /lost+found"));
449                 exit(1);
450         }
451         
452         for (i=1; i < EXT2_NDIR_BLOCKS; i++) {
453                 /* Ensure that lost+found is at least 2 blocks, so we always
454                  * test large empty blocks for big-block filesystems.  */
455                 if ((lpf_size += fs->blocksize) >= 16*1024 &&
456                     lpf_size >= 2 * fs->blocksize)
457                         break;
458                 retval = ext2fs_expand_dir(fs, ino);
459                 if (retval) {
460                         com_err("ext2fs_expand_dir", retval,
461                                 _("while expanding /lost+found"));
462                         exit(1);
463                 }
464         }
465 }
466
467 static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list)
468 {
469         errcode_t       retval;
470         
471         ext2fs_mark_inode_bitmap(fs->inode_map, EXT2_BAD_INO);
472         ext2fs_inode_alloc_stats2(fs, EXT2_BAD_INO, +1, 0);
473         retval = ext2fs_update_bb_inode(fs, bb_list);
474         if (retval) {
475                 com_err("ext2fs_update_bb_inode", retval,
476                         _("while setting bad block inode"));
477                 exit(1);
478         }
479
480 }
481
482 static void reserve_inodes(ext2_filsys fs)
483 {
484         ext2_ino_t      i;
485         int             group;
486
487         for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++)
488                 ext2fs_inode_alloc_stats2(fs, i, +1, 0);
489         ext2fs_mark_ib_dirty(fs);
490 }
491
492 #define BSD_DISKMAGIC   (0x82564557UL)  /* The disk magic number */
493 #define BSD_MAGICDISK   (0x57455682UL)  /* The disk magic number reversed */
494 #define BSD_LABEL_OFFSET        64
495
496 static void zap_sector(ext2_filsys fs, int sect, int nsect)
497 {
498         char *buf;
499         int retval;
500         unsigned int *magic;
501
502         buf = malloc(512*nsect);
503         if (!buf) {
504                 printf(_("Out of memory erasing sectors %d-%d\n"),
505                        sect, sect + nsect - 1);
506                 exit(1);
507         }
508
509         if (sect == 0) {
510                 /* Check for a BSD disklabel, and don't erase it if so */
511                 retval = io_channel_read_blk(fs->io, 0, -512, buf);
512                 if (retval)
513                         fprintf(stderr,
514                                 _("Warning: could not read block 0: %s\n"),
515                                 error_message(retval));
516                 else {
517                         magic = (unsigned int *) (buf + BSD_LABEL_OFFSET);
518                         if ((*magic == BSD_DISKMAGIC) ||
519                             (*magic == BSD_MAGICDISK))
520                                 return;
521                 }
522         }
523
524         memset(buf, 0, 512*nsect);
525         io_channel_set_blksize(fs->io, 512);
526         retval = io_channel_write_blk(fs->io, sect, -512*nsect, buf);
527         io_channel_set_blksize(fs->io, fs->blocksize);
528         free(buf);
529         if (retval)
530                 fprintf(stderr, _("Warning: could not erase sector %d: %s\n"),
531                         sect, error_message(retval));
532 }
533
534 static void create_journal_dev(ext2_filsys fs)
535 {
536         struct progress_struct progress;
537         errcode_t               retval;
538         char                    *buf;
539         blk_t                   blk, err_blk;
540         int                     c, count, err_count;
541
542         retval = ext2fs_create_journal_superblock(fs,
543                                   fs->super->s_blocks_count, 0, &buf);
544         if (retval) {
545                 com_err("create_journal_dev", retval,
546                         _("while initializing journal superblock"));
547                 exit(1);
548         }
549         if (quiet)
550                 memset(&progress, 0, sizeof(progress));
551         else
552                 progress_init(&progress, _("Zeroing journal device: "),
553                               fs->super->s_blocks_count);
554
555         blk = 0;
556         count = fs->super->s_blocks_count;
557         while (count > 0) {
558                 if (count > 1024)
559                         c = 1024;
560                 else
561                         c = count;
562                 retval = ext2fs_zero_blocks(fs, blk, c, &err_blk, &err_count);
563                 if (retval) {
564                         com_err("create_journal_dev", retval,
565                                 _("while zeroing journal device "
566                                   "(block %u, count %d)"),
567                                 err_blk, err_count);
568                         exit(1);
569                 }
570                 blk += c;
571                 count -= c;
572                 progress_update(&progress, blk);
573         }
574         ext2fs_zero_blocks(0, 0, 0, 0, 0);
575
576         retval = io_channel_write_blk(fs->io,
577                                       fs->super->s_first_data_block+1,
578                                       1, buf);
579         if (retval) {
580                 com_err("create_journal_dev", retval,
581                         _("while writing journal superblock"));
582                 exit(1);
583         }
584         progress_close(&progress);
585 }
586
587 static void show_stats(ext2_filsys fs)
588 {
589         struct ext2_super_block *s = fs->super;
590         char                    buf[80];
591         char                    *os;
592         blk_t                   group_block;
593         dgrp_t                  i;
594         int                     need, col_left;
595         
596         if (fs_param.s_blocks_count != s->s_blocks_count)
597                 fprintf(stderr, _("warning: %u blocks unused.\n\n"),
598                        fs_param.s_blocks_count - s->s_blocks_count);
599
600         memset(buf, 0, sizeof(buf));
601         strncpy(buf, s->s_volume_name, sizeof(s->s_volume_name));
602         printf(_("Filesystem label=%s\n"), buf);
603         fputs(_("OS type: "), stdout);
604         os = e2p_os2string(fs->super->s_creator_os);
605         fputs(os, stdout);
606         free(os);
607         printf("\n");
608         printf(_("Block size=%u (log=%u)\n"), fs->blocksize,
609                 s->s_log_block_size);
610         printf(_("Fragment size=%u (log=%u)\n"), fs->fragsize,
611                 s->s_log_frag_size);
612         printf(_("%u inodes, %u blocks\n"), s->s_inodes_count,
613                s->s_blocks_count);
614         printf(_("%u blocks (%2.2f%%) reserved for the super user\n"),
615                 s->s_r_blocks_count,
616                100.0 * s->s_r_blocks_count / s->s_blocks_count);
617         printf(_("First data block=%u\n"), s->s_first_data_block);
618         if (s->s_reserved_gdt_blocks)
619                 printf(_("Maximum filesystem blocks=%lu\n"),
620                        (s->s_reserved_gdt_blocks + fs->desc_blocks) *
621                        EXT2_DESC_PER_BLOCK(s) * s->s_blocks_per_group);
622         if (fs->group_desc_count > 1)
623                 printf(_("%u block groups\n"), fs->group_desc_count);
624         else
625                 printf(_("%u block group\n"), fs->group_desc_count);
626         printf(_("%u blocks per group, %u fragments per group\n"),
627                s->s_blocks_per_group, s->s_frags_per_group);
628         printf(_("%u inodes per group\n"), s->s_inodes_per_group);
629
630         if (fs->group_desc_count == 1) {
631                 printf("\n");
632                 return;
633         }
634
635         printf(_("Superblock backups stored on blocks: "));
636         group_block = s->s_first_data_block;
637         col_left = 0;
638         for (i = 1; i < fs->group_desc_count; i++) {
639                 group_block += s->s_blocks_per_group;
640                 if (!ext2fs_bg_has_super(fs, i))
641                         continue;
642                 if (i != 1)
643                         printf(", ");
644                 need = int_log10(group_block) + 2;
645                 if (need > col_left) {
646                         printf("\n\t");
647                         col_left = 72;
648                 }
649                 col_left -= need;
650                 printf("%u", group_block);
651         }
652         printf("\n\n");
653 }
654
655 /*
656  * Set the S_CREATOR_OS field.  Return true if OS is known,
657  * otherwise, 0.
658  */
659 static int set_os(struct ext2_super_block *sb, char *os)
660 {
661         if (isdigit (*os))
662                 sb->s_creator_os = atoi (os);
663         else if (strcasecmp(os, "linux") == 0)
664                 sb->s_creator_os = EXT2_OS_LINUX;
665         else if (strcasecmp(os, "GNU") == 0 || strcasecmp(os, "hurd") == 0)
666                 sb->s_creator_os = EXT2_OS_HURD;
667         else if (strcasecmp(os, "freebsd") == 0)
668                 sb->s_creator_os = EXT2_OS_FREEBSD;
669         else if (strcasecmp(os, "lites") == 0)
670                 sb->s_creator_os = EXT2_OS_LITES;
671         else
672                 return 0;
673         return 1;
674 }
675
676 #define PATH_SET "PATH=/sbin"
677
678 static void parse_extended_opts(struct ext2_super_block *param, 
679                                 const char *opts)
680 {
681         char    *buf, *token, *next, *p, *arg, *badopt = 0;
682         int     len;
683         int     r_usage = 0;
684
685         len = strlen(opts);
686         buf = malloc(len+1);
687         if (!buf) {
688                 fprintf(stderr,
689                         _("Couldn't allocate memory to parse options!\n"));
690                 exit(1);
691         }
692         strcpy(buf, opts);
693         for (token = buf; token && *token; token = next) {
694                 p = strchr(token, ',');
695                 next = 0;
696                 if (p) {
697                         *p = 0;
698                         next = p+1;
699                 }
700                 arg = strchr(token, '=');
701                 if (arg) {
702                         *arg = 0;
703                         arg++;
704                 }
705                 if (strcmp(token, "stride") == 0) {
706                         if (!arg) {
707                                 r_usage++;
708                                 badopt = token;
709                                 continue;
710                         }
711                         param->s_raid_stride = strtoul(arg, &p, 0);
712                         if (*p || (param->s_raid_stride == 0)) {
713                                 fprintf(stderr,
714                                         _("Invalid stride parameter: %s\n"),
715                                         arg);
716                                 r_usage++;
717                                 continue;
718                         }
719                 } else if (strcmp(token, "stripe-width") == 0 ||
720                            strcmp(token, "stripe_width") == 0) {
721                         if (!arg) {
722                                 r_usage++;
723                                 badopt = token;
724                                 continue;
725                         }
726                         param->s_raid_stripe_width = strtoul(arg, &p, 0);
727                         if (*p || (param->s_raid_stripe_width == 0)) {
728                                 fprintf(stderr,
729                                         _("Invalid stripe-width parameter: %s\n"),
730                                         arg);
731                                 r_usage++;
732                                 continue;
733                         }
734                 } else if (!strcmp(token, "resize")) {
735                         unsigned long resize, bpg, rsv_groups;
736                         unsigned long group_desc_count, desc_blocks;
737                         unsigned int gdpb, blocksize;
738                         int rsv_gdb;
739
740                         if (!arg) {
741                                 r_usage++;
742                                 badopt = token;
743                                 continue;
744                         }
745
746                         resize = parse_num_blocks(arg, 
747                                                   param->s_log_block_size);
748
749                         if (resize == 0) {
750                                 fprintf(stderr, 
751                                         _("Invalid resize parameter: %s\n"),
752                                         arg);
753                                 r_usage++;
754                                 continue;
755                         }
756                         if (resize <= param->s_blocks_count) {
757                                 fprintf(stderr, 
758                                         _("The resize maximum must be greater "
759                                           "than the filesystem size.\n"));
760                                 r_usage++;
761                                 continue;
762                         }
763
764                         blocksize = EXT2_BLOCK_SIZE(param);
765                         bpg = param->s_blocks_per_group;
766                         if (!bpg)
767                                 bpg = blocksize * 8;
768                         gdpb = EXT2_DESC_PER_BLOCK(param);
769                         group_desc_count = 
770                                 ext2fs_div_ceil(param->s_blocks_count, bpg);
771                         desc_blocks = (group_desc_count +
772                                        gdpb - 1) / gdpb;
773                         rsv_groups = ext2fs_div_ceil(resize, bpg);
774                         rsv_gdb = ext2fs_div_ceil(rsv_groups, gdpb) - 
775                                 desc_blocks;
776                         if (rsv_gdb > (int) EXT2_ADDR_PER_BLOCK(param))
777                                 rsv_gdb = EXT2_ADDR_PER_BLOCK(param);
778
779                         if (rsv_gdb > 0) {
780                                 if (param->s_rev_level == EXT2_GOOD_OLD_REV) {
781                                         fprintf(stderr, 
782         _("On-line resizing not supported with revision 0 filesystems\n"));
783                                         free(buf);
784                                         exit(1);
785                                 }
786                                 param->s_feature_compat |=
787                                         EXT2_FEATURE_COMPAT_RESIZE_INODE;
788
789                                 param->s_reserved_gdt_blocks = rsv_gdb;
790                         }
791                 } else if (!strcmp(token, "test_fs")) {
792                         param->s_flags |= EXT2_FLAGS_TEST_FILESYS;
793                 } else if (!strcmp(token, "lazy_itable_init")) {
794                         if (arg)
795                                 lazy_itable_init = strtoul(arg, &p, 0);
796                         else
797                                 lazy_itable_init = 1;
798                 } else {
799                         r_usage++;
800                         badopt = token;
801                 }
802         }
803         if (r_usage) {
804                 fprintf(stderr, _("\nBad option(s) specified: %s\n\n"
805                         "Extended options are separated by commas, "
806                         "and may take an argument which\n"
807                         "\tis set off by an equals ('=') sign.\n\n"
808                         "Valid extended options are:\n"
809                         "\tstride=<RAID per-disk data chunk in blocks>\n"
810                         "\tstripe-width=<RAID stride * data disks in blocks>\n"
811                         "\tresize=<resize maximum size in blocks>\n"
812                         "\tlazy_itable_init=<0 to disable, 1 to enable>\n"
813                         "\ttest_fs\n\n"),
814                         badopt ? badopt : "");
815                 free(buf);
816                 exit(1);
817         }
818         if (param->s_raid_stride &&
819             (param->s_raid_stripe_width % param->s_raid_stride) != 0)
820                 fprintf(stderr, _("\nWarning: RAID stripe-width %u not an even "
821                                   "multiple of stride %u.\n\n"),
822                         param->s_raid_stripe_width, param->s_raid_stride);
823
824         free(buf);
825 }       
826
827 static __u32 ok_features[3] = {
828         /* Compat */
829         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
830                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
831                 EXT2_FEATURE_COMPAT_DIR_INDEX |
832                 EXT2_FEATURE_COMPAT_EXT_ATTR,
833         /* Incompat */
834         EXT2_FEATURE_INCOMPAT_FILETYPE|
835                 EXT3_FEATURE_INCOMPAT_EXTENTS|
836                 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|
837                 EXT2_FEATURE_INCOMPAT_META_BG|
838                 EXT4_FEATURE_INCOMPAT_FLEX_BG,
839         /* R/O compat */
840         EXT2_FEATURE_RO_COMPAT_LARGE_FILE|
841                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|
842                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM
843 };
844
845
846 static void syntax_err_report(const char *filename, long err, int line_num)
847 {
848         fprintf(stderr, 
849                 _("Syntax error in mke2fs config file (%s, line #%d)\n\t%s\n"),
850                 filename, line_num, error_message(err));
851         exit(1);
852 }
853
854 static const char *config_fn[] = { ROOT_SYSCONFDIR "/mke2fs.conf", 0 };
855
856 static void edit_feature(const char *str, __u32 *compat_array) 
857 {
858         if (!str)
859                 return;
860
861         if (e2p_edit_feature(str, compat_array, ok_features)) {
862                 fprintf(stderr, _("Invalid filesystem option set: %s\n"), 
863                         str);
864                 exit(1);
865         }
866 }
867
868 struct str_list {
869         char **list;
870         int num;
871         int max;
872 };
873
874 static errcode_t init_list(struct str_list *sl)
875 {
876         sl->num = 0;
877         sl->max = 0;
878         sl->list = malloc((sl->max+1) * sizeof(char *));
879         if (!sl->list)
880                 return ENOMEM;
881         sl->list[0] = 0;
882         return 0;
883 }
884
885 static errcode_t push_string(struct str_list *sl, const char *str)
886 {
887         char **new_list;
888
889         if (sl->num >= sl->max) {
890                 sl->max += 2;
891                 new_list = realloc(sl->list, (sl->max+1) * sizeof(char *));
892                 if (!new_list)
893                         return ENOMEM;
894                 sl->list = new_list;
895         }
896         sl->list[sl->num] = malloc(strlen(str)+1);
897         if (sl->list[sl->num] == 0)
898                 return ENOMEM;
899         strcpy(sl->list[sl->num], str);
900         sl->num++;
901         sl->list[sl->num] = 0;
902         return 0;
903 }
904
905 static void print_str_list(char **list)
906 {
907         char **cpp;
908
909         for (cpp = list; *cpp; cpp++) {
910                 printf("'%s'", *cpp);
911                 if (cpp[1])
912                         fputs(", ", stdout);
913         }
914         fputc('\n', stdout);
915 }
916
917 static char **parse_fs_type(const char *fs_type,
918                             const char *usage_types,
919                             struct ext2_super_block *fs_param,
920                             char *progname)
921 {
922         const char      *ext_type = 0;
923         char            *parse_str;
924         char            *profile_type = 0;
925         char            *cp, *t;
926         const char      *size_type;
927         struct str_list list;
928         int             state = 0;
929         unsigned long   meg;
930
931         if (init_list(&list))
932                 return 0;
933
934         if (fs_type)
935                 ext_type = fs_type;
936         else if (progname) {
937                 ext_type = strrchr(progname, '/');
938                 if (ext_type)
939                         ext_type++;
940                 else
941                         ext_type = progname;
942
943                 if (!strncmp(ext_type, "mkfs.", 5)) {
944                         ext_type += 5;
945                         if (ext_type[0] == 0)
946                                 ext_type = 0;
947                 } else
948                         ext_type = 0;
949         }
950
951         if (!ext_type) {
952                 profile_get_string(profile, "defaults", "fs_type", 0,
953                                    "ext2", &profile_type);
954                 ext_type = profile_type;
955                 if (!strcmp(ext_type, "ext2") && (journal_size != 0))
956                         ext_type = "ext3";
957         }
958
959         meg = (1024 * 1024) / EXT2_BLOCK_SIZE(fs_param);
960         if (fs_param->s_blocks_count < 3 * meg)
961                 size_type = "floppy";
962         else if (fs_param->s_blocks_count < 512 * meg)
963                 size_type = "small";
964         else
965                 size_type = "default";
966
967         if (!usage_types)
968                 usage_types = size_type;
969
970         parse_str = malloc(usage_types ? strlen(usage_types)+1 : 1);
971         if (!parse_str) {
972                 free(list.list);
973                 return 0;
974         }
975         if (usage_types)
976                 strcpy(parse_str, usage_types);
977         else
978                 *parse_str = '\0';
979
980         if (ext_type)
981                 push_string(&list, ext_type);
982         cp = parse_str;
983         while (1) {
984                 t = strchr(cp, ',');
985                 if (t)
986                         *t = '\0';
987
988                 if (*cp)
989                         push_string(&list, cp);
990                 if (t)
991                         cp = t+1;
992                 else {
993                         cp = "";
994                         break;
995                 }
996         }
997         free(parse_str);
998         if (profile_type)
999                 free(profile_type);
1000         return (list.list);
1001 }
1002
1003 static char *get_string_from_profile(char **fs_types, const char *opt,
1004                                      const char *def_val)
1005 {
1006         char *ret = 0;
1007         char **cpp;
1008         int i;
1009
1010         for (i=0; fs_types[i]; i++);
1011         for (i-=1; i >=0 ; i--) {
1012                 profile_get_string(profile, "fs_types", fs_types[i],
1013                                    opt, 0, &ret);
1014                 if (ret)
1015                         return ret;
1016         }
1017         profile_get_string(profile, "defaults", opt, 0, def_val, &ret);
1018         return (ret);
1019 }
1020
1021 static int get_int_from_profile(char **fs_types, const char *opt, int def_val)
1022 {
1023         int ret;
1024         char **cpp;
1025
1026         profile_get_integer(profile, "defaults", opt, 0, def_val, &ret);
1027         for (cpp = fs_types; *cpp; cpp++)
1028                 profile_get_integer(profile, "fs_types", *cpp, opt, ret, &ret);
1029         return ret;
1030 }
1031
1032 static int get_bool_from_profile(char **fs_types, const char *opt, int def_val)
1033 {
1034         int ret;
1035         char **cpp;
1036
1037         profile_get_boolean(profile, "defaults", opt, 0, def_val, &ret);
1038         for (cpp = fs_types; *cpp; cpp++)
1039                 profile_get_boolean(profile, "fs_types", *cpp, opt, ret, &ret);
1040         return ret;
1041 }
1042
1043 extern const char *mke2fs_default_profile;
1044 static const char *default_files[] = { "<default>", 0 };
1045
1046 static void PRS(int argc, char *argv[])
1047 {
1048         int             b, c;
1049         int             size;
1050         char            *tmp, *tmp2;
1051         int             blocksize = 0;
1052         int             inode_ratio = 0;
1053         int             inode_size = 0;
1054         double          reserved_ratio = 5.0;
1055         int             sector_size = 0;
1056         int             show_version_only = 0;
1057         unsigned long long num_inodes = 0; /* unsigned long long to catch too-large input */
1058         errcode_t       retval;
1059         char *          oldpath = getenv("PATH");
1060         char *          extended_opts = 0;
1061         const char *    fs_type = 0;
1062         const char *    usage_types = 0;
1063         blk_t           dev_size;
1064 #ifdef __linux__
1065         struct          utsname ut;
1066 #endif
1067         long            sysval;
1068         int             s_opt = -1, r_opt = -1;
1069         char            *fs_features = 0;
1070         int             use_bsize;
1071         char            *newpath;
1072         int             pathlen = sizeof(PATH_SET) + 1;
1073
1074         if (oldpath)
1075                 pathlen += strlen(oldpath);
1076         newpath = malloc(pathlen);
1077         strcpy(newpath, PATH_SET);
1078
1079         /* Update our PATH to include /sbin  */
1080         if (oldpath) {
1081                 strcat (newpath, ":");
1082                 strcat (newpath, oldpath);
1083         }
1084         putenv (newpath);
1085
1086         tmp = getenv("MKE2FS_SYNC");
1087         if (tmp)
1088                 sync_kludge = atoi(tmp);
1089
1090         /* Determine the system page size if possible */
1091 #ifdef HAVE_SYSCONF
1092 #if (!defined(_SC_PAGESIZE) && defined(_SC_PAGE_SIZE))
1093 #define _SC_PAGESIZE _SC_PAGE_SIZE
1094 #endif
1095 #ifdef _SC_PAGESIZE
1096         sysval = sysconf(_SC_PAGESIZE);
1097         if (sysval > 0)
1098                 sys_page_size = sysval;
1099 #endif /* _SC_PAGESIZE */
1100 #endif /* HAVE_SYSCONF */
1101
1102         if ((tmp = getenv("MKE2FS_CONFIG")) != NULL)
1103                 config_fn[0] = tmp;
1104         profile_set_syntax_err_cb(syntax_err_report);
1105         retval = profile_init(config_fn, &profile);
1106         if (retval == ENOENT) {
1107                 profile_init(default_files, &profile);
1108                 profile_set_default(profile, mke2fs_default_profile);
1109         }
1110         
1111         setbuf(stdout, NULL);
1112         setbuf(stderr, NULL);
1113         add_error_table(&et_ext2_error_table);
1114         add_error_table(&et_prof_error_table);
1115         memset(&fs_param, 0, sizeof(struct ext2_super_block));
1116         fs_param.s_rev_level = 1;  /* Create revision 1 filesystems now */
1117
1118 #ifdef __linux__
1119         if (uname(&ut)) {
1120                 perror("uname");
1121                 exit(1);
1122         }
1123         linux_version_code = parse_version_number(ut.release);
1124         if (linux_version_code && linux_version_code < (2*65536 + 2*256))
1125                 fs_param.s_rev_level = 0;
1126 #endif
1127
1128         if (argc && *argv) {
1129                 program_name = get_progname(*argv);
1130
1131                 /* If called as mkfs.ext3, create a journal inode */
1132                 if (!strcmp(program_name, "mkfs.ext3"))
1133                         journal_size = -1;
1134         }
1135
1136         while ((c = getopt (argc, argv,
1137                     "b:cf:g:i:jl:m:no:qr:s:t:vE:FI:J:L:M:N:O:R:ST:V")) != EOF) {
1138                 switch (c) {
1139                 case 'b':
1140                         blocksize = strtol(optarg, &tmp, 0);
1141                         b = (blocksize > 0) ? blocksize : -blocksize;
1142                         if (b < EXT2_MIN_BLOCK_SIZE ||
1143                             b > EXT2_MAX_BLOCK_SIZE || *tmp) {
1144                                 com_err(program_name, 0,
1145                                         _("invalid block size - %s"), optarg);
1146                                 exit(1);
1147                         }
1148                         if (blocksize > 4096)
1149                                 fprintf(stderr, _("Warning: blocksize %d not "
1150                                                   "usable on most systems.\n"),
1151                                         blocksize);
1152                         if (blocksize > 0) 
1153                                 fs_param.s_log_block_size =
1154                                         int_log2(blocksize >>
1155                                                  EXT2_MIN_BLOCK_LOG_SIZE);
1156                         break;
1157                 case 'c':       /* Check for bad blocks */
1158                         cflag++;
1159                         break;
1160                 case 'f':
1161                         size = strtoul(optarg, &tmp, 0);
1162                         if (size < EXT2_MIN_BLOCK_SIZE ||
1163                             size > EXT2_MAX_BLOCK_SIZE || *tmp) {
1164                                 com_err(program_name, 0,
1165                                         _("invalid fragment size - %s"),
1166                                         optarg);
1167                                 exit(1);
1168                         }
1169                         fs_param.s_log_frag_size =
1170                                 int_log2(size >> EXT2_MIN_BLOCK_LOG_SIZE);
1171                         fprintf(stderr, _("Warning: fragments not supported.  "
1172                                "Ignoring -f option\n"));
1173                         break;
1174                 case 'g':
1175                         fs_param.s_blocks_per_group = strtoul(optarg, &tmp, 0);
1176                         if (*tmp) {
1177                                 com_err(program_name, 0,
1178                                         _("Illegal number for blocks per group"));
1179                                 exit(1);
1180                         }
1181                         if ((fs_param.s_blocks_per_group % 8) != 0) {
1182                                 com_err(program_name, 0,
1183                                 _("blocks per group must be multiple of 8"));
1184                                 exit(1);
1185                         }
1186                         break;
1187                 case 'i':
1188                         inode_ratio = strtoul(optarg, &tmp, 0);
1189                         if (inode_ratio < EXT2_MIN_BLOCK_SIZE ||
1190                             inode_ratio > EXT2_MAX_BLOCK_SIZE * 1024 ||
1191                             *tmp) {
1192                                 com_err(program_name, 0,
1193                                         _("invalid inode ratio %s (min %d/max %d)"),
1194                                         optarg, EXT2_MIN_BLOCK_SIZE,
1195                                         EXT2_MAX_BLOCK_SIZE);
1196                                 exit(1);
1197                         }
1198                         break;
1199                 case 'J':
1200                         parse_journal_opts(optarg);
1201                         break;
1202                 case 'j':
1203                         if (!journal_size)
1204                                 journal_size = -1;
1205                         break;
1206                 case 'l':
1207                         bad_blocks_filename = malloc(strlen(optarg)+1);
1208                         if (!bad_blocks_filename) {
1209                                 com_err(program_name, ENOMEM,
1210                                         _("in malloc for bad_blocks_filename"));
1211                                 exit(1);
1212                         }
1213                         strcpy(bad_blocks_filename, optarg);
1214                         break;
1215                 case 'm':
1216                         reserved_ratio = strtod(optarg, &tmp);
1217                         if (reserved_ratio > 50 || *tmp) {
1218                                 com_err(program_name, 0,
1219                                         _("invalid reserved blocks percent - %s"),
1220                                         optarg);
1221                                 exit(1);
1222                         }
1223                         break;
1224                 case 'n':
1225                         noaction++;
1226                         break;
1227                 case 'o':
1228                         creator_os = optarg;
1229                         break;
1230                 case 'q':
1231                         quiet = 1;
1232                         break;
1233                 case 'r':
1234                         r_opt = strtoul(optarg, &tmp, 0);
1235                         if (*tmp) {
1236                                 com_err(program_name, 0,
1237                                         _("bad revision level - %s"), optarg);
1238                                 exit(1);
1239                         }
1240                         fs_param.s_rev_level = r_opt;
1241                         break;
1242                 case 's':       /* deprecated */
1243                         s_opt = atoi(optarg);
1244                         break;
1245                 case 'I':
1246                         inode_size = strtoul(optarg, &tmp, 0);
1247                         if (*tmp) {
1248                                 com_err(program_name, 0,
1249                                         _("invalid inode size - %s"), optarg);
1250                                 exit(1);
1251                         }
1252                         break;
1253                 case 'v':
1254                         verbose = 1;
1255                         break;
1256                 case 'F':
1257                         force++;
1258                         break;
1259                 case 'L':
1260                         volume_label = optarg;
1261                         break;
1262                 case 'M':
1263                         mount_dir = optarg;
1264                         break;
1265                 case 'N':
1266                         num_inodes = strtoul(optarg, &tmp, 0);
1267                         if (*tmp) {
1268                                 com_err(program_name, 0,
1269                                         _("bad num inodes - %s"), optarg);
1270                                         exit(1);
1271                         }
1272                         break;
1273                 case 'O':
1274                         fs_features = optarg;
1275                         break;
1276                 case 'E':
1277                 case 'R':
1278                         extended_opts = optarg;
1279                         break;
1280                 case 'S':
1281                         super_only = 1;
1282                         break;
1283                 case 't':
1284                         fs_type = optarg;
1285                         break;
1286                 case 'T':
1287                         usage_types = optarg;
1288                         break;
1289                 case 'V':
1290                         /* Print version number and exit */
1291                         show_version_only++;
1292                         break;
1293                 default:
1294                         usage();
1295                 }
1296         }
1297         if ((optind == argc) && !show_version_only)
1298                 usage();
1299         device_name = argv[optind++];
1300
1301         if (!quiet || show_version_only)
1302                 fprintf (stderr, "mke2fs %s (%s)\n", E2FSPROGS_VERSION, 
1303                          E2FSPROGS_DATE);
1304
1305         if (show_version_only) {
1306                 fprintf(stderr, _("\tUsing %s\n"), 
1307                         error_message(EXT2_ET_BASE));
1308                 exit(0);
1309         }
1310
1311         /*
1312          * If there's no blocksize specified and there is a journal
1313          * device, use it to figure out the blocksize
1314          */
1315         if (blocksize <= 0 && journal_device) {
1316                 ext2_filsys     jfs;
1317                 io_manager      io_ptr;
1318
1319 #ifdef CONFIG_TESTIO_DEBUG
1320                 io_ptr = test_io_manager;
1321                 test_io_backing_manager = unix_io_manager;
1322 #else
1323                 io_ptr = unix_io_manager;
1324 #endif
1325                 retval = ext2fs_open(journal_device,
1326                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
1327                                      0, io_ptr, &jfs);
1328                 if (retval) {
1329                         com_err(program_name, retval,
1330                                 _("while trying to open journal device %s\n"),
1331                                 journal_device);
1332                         exit(1);
1333                 }
1334                 if ((blocksize < 0) && (jfs->blocksize < (unsigned) (-blocksize))) {
1335                         com_err(program_name, 0,
1336                                 _("Journal dev blocksize (%d) smaller than "
1337                                   "minimum blocksize %d\n"), jfs->blocksize,
1338                                 -blocksize);
1339                         exit(1);
1340                 }
1341                 blocksize = jfs->blocksize;
1342                 fs_param.s_log_block_size =
1343                         int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
1344                 ext2fs_close(jfs);
1345         }
1346
1347         if (blocksize > sys_page_size) {
1348                 if (!force) {
1349                         com_err(program_name, 0,
1350                                 _("%d-byte blocks too big for system (max %d)"),
1351                                 blocksize, sys_page_size);
1352                         proceed_question();
1353                 }
1354                 fprintf(stderr, _("Warning: %d-byte blocks too big for system "
1355                                   "(max %d), forced to continue\n"),
1356                         blocksize, sys_page_size);
1357         }
1358         if (optind < argc) {
1359                 fs_param.s_blocks_count = parse_num_blocks(argv[optind++], 
1360                                 fs_param.s_log_block_size);
1361                 if (!fs_param.s_blocks_count) {
1362                         com_err(program_name, 0, _("invalid blocks count - %s"),
1363                                 argv[optind - 1]);
1364                         exit(1);
1365                 }
1366         }
1367         if (optind < argc)
1368                 usage();
1369
1370         if (!force)
1371                 check_plausibility(device_name);
1372         check_mount(device_name, force, _("filesystem"));
1373
1374         fs_param.s_log_frag_size = fs_param.s_log_block_size;
1375
1376         if (noaction && fs_param.s_blocks_count) {
1377                 dev_size = fs_param.s_blocks_count;
1378                 retval = 0;
1379         } else {
1380         retry:
1381                 retval = ext2fs_get_device_size(device_name,
1382                                                 EXT2_BLOCK_SIZE(&fs_param),
1383                                                 &dev_size);
1384                 if ((retval == EFBIG) &&
1385                     (blocksize == 0) && 
1386                     (fs_param.s_log_block_size == 0)) {
1387                         fs_param.s_log_block_size = 2;
1388                         blocksize = 4096;
1389                         goto retry;
1390                 }
1391         }
1392                         
1393         if (retval && (retval != EXT2_ET_UNIMPLEMENTED)) {
1394                 com_err(program_name, retval,
1395                         _("while trying to determine filesystem size"));
1396                 exit(1);
1397         }
1398         if (!fs_param.s_blocks_count) {
1399                 if (retval == EXT2_ET_UNIMPLEMENTED) {
1400                         com_err(program_name, 0,
1401                                 _("Couldn't determine device size; you "
1402                                 "must specify\nthe size of the "
1403                                 "filesystem\n"));
1404                         exit(1);
1405                 } else {
1406                         if (dev_size == 0) {
1407                                 com_err(program_name, 0,
1408                                 _("Device size reported to be zero.  "
1409                                   "Invalid partition specified, or\n\t"
1410                                   "partition table wasn't reread "
1411                                   "after running fdisk, due to\n\t"
1412                                   "a modified partition being busy "
1413                                   "and in use.  You may need to reboot\n\t"
1414                                   "to re-read your partition table.\n"
1415                                   ));
1416                                 exit(1);
1417                         }
1418                         fs_param.s_blocks_count = dev_size;
1419                         if (sys_page_size > EXT2_BLOCK_SIZE(&fs_param))
1420                                 fs_param.s_blocks_count &= ~((sys_page_size /
1421                                            EXT2_BLOCK_SIZE(&fs_param))-1);
1422                 }
1423                 
1424         } else if (!force && (fs_param.s_blocks_count > dev_size)) {
1425                 com_err(program_name, 0,
1426                         _("Filesystem larger than apparent device size."));
1427                 proceed_question();
1428         }
1429
1430         fs_types = parse_fs_type(fs_type, usage_types, &fs_param, argv[0]);
1431         if (!fs_types) {
1432                 fprintf(stderr, _("Failed to parse fs types list\n"));
1433                 exit(1);
1434         }
1435         if (verbose) {
1436                 fputs("Fs_types for mke2fs.conf resolution: ", stdout);
1437                 print_str_list(fs_types);
1438         }
1439
1440         if (!fs_type) {
1441                 int megs = (__u64)fs_param.s_blocks_count *
1442                         (EXT2_BLOCK_SIZE(&fs_param) / 1024) / 1024;
1443
1444                 if (fs_param.s_feature_incompat & 
1445                     EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)
1446                         fs_type = "journal";
1447                 else if (megs <= 3)
1448                         fs_type = "floppy";
1449                 else if (megs <= 512)
1450                         fs_type = "small";
1451                 else
1452                         fs_type = "default";
1453         }
1454
1455         /* Figure out what features should be enabled */
1456
1457         tmp = NULL;
1458         if (fs_param.s_rev_level != EXT2_GOOD_OLD_REV) {
1459                 char **cpp;
1460
1461                 tmp = get_string_from_profile(fs_types, "base_features",
1462                       "sparse_super,filetype,resize_inode,dir_index");
1463                 edit_feature(tmp, &fs_param.s_feature_compat);
1464                 free(tmp);
1465
1466                 for (cpp = fs_types; *cpp; cpp++) {
1467                         tmp = NULL;
1468                         profile_get_string(profile, "fs_types", *cpp,
1469                                            "features", "", &tmp);
1470                         if (tmp && *tmp)
1471                                 edit_feature(tmp, &fs_param.s_feature_compat);
1472                         if (tmp)
1473                                 free(tmp);
1474                 }
1475                 tmp = get_string_from_profile(fs_types, "default_features",
1476                                               "");
1477         }
1478         edit_feature(fs_features ? fs_features : tmp,
1479                      &fs_param.s_feature_compat);
1480         if (tmp)
1481                 free(tmp);
1482
1483         if (r_opt == EXT2_GOOD_OLD_REV && 
1484             (fs_param.s_feature_compat || fs_param.s_feature_incompat ||
1485              fs_param.s_feature_incompat)) {
1486                 fprintf(stderr, _("Filesystem features not supported "
1487                                   "with revision 0 filesystems\n"));
1488                 exit(1);
1489         }
1490
1491         if (s_opt > 0) {
1492                 if (r_opt == EXT2_GOOD_OLD_REV) {
1493                         fprintf(stderr, _("Sparse superblocks not supported "
1494                                   "with revision 0 filesystems\n"));
1495                         exit(1);
1496                 }
1497                 fs_param.s_feature_ro_compat |=
1498                         EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
1499         } else if (s_opt == 0)
1500                 fs_param.s_feature_ro_compat &=
1501                         ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
1502
1503         if (journal_size != 0) {
1504                 if (r_opt == EXT2_GOOD_OLD_REV) {
1505                         fprintf(stderr, _("Journals not supported "
1506                                   "with revision 0 filesystems\n"));
1507                         exit(1);
1508                 }
1509                 fs_param.s_feature_compat |= 
1510                         EXT3_FEATURE_COMPAT_HAS_JOURNAL;
1511         }
1512
1513         if (fs_param.s_feature_incompat & 
1514             EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
1515                 reserved_ratio = 0;
1516                 fs_param.s_feature_incompat = EXT3_FEATURE_INCOMPAT_JOURNAL_DEV;
1517                 fs_param.s_feature_compat = 0;
1518                 fs_param.s_feature_ro_compat = 0;
1519         }
1520
1521         if ((fs_param.s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) &&
1522             (fs_param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE)) {
1523                 fprintf(stderr, _("The resize_inode and meta_bg features "
1524                                   "are not compatible.\n"
1525                                   "They can not be both enabled "
1526                                   "simultaneously.\n"));
1527                 exit(1);
1528         }
1529
1530         /* Set first meta blockgroup via an environment variable */
1531         /* (this is mostly for debugging purposes) */
1532         if ((fs_param.s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) &&
1533             ((tmp = getenv("MKE2FS_FIRST_META_BG"))))
1534                 fs_param.s_first_meta_bg = atoi(tmp);
1535
1536         /* Get the hardware sector size, if available */
1537         retval = ext2fs_get_device_sectsize(device_name, &sector_size);
1538         if (retval) {
1539                 com_err(program_name, retval,
1540                         _("while trying to determine hardware sector size"));
1541                 exit(1);
1542         }
1543
1544         if ((tmp = getenv("MKE2FS_DEVICE_SECTSIZE")) != NULL)
1545                 sector_size = atoi(tmp);
1546         
1547         if (blocksize <= 0) {
1548                 use_bsize = get_int_from_profile(fs_types, "blocksize", 4096);
1549
1550                 if (use_bsize == -1) {
1551                         use_bsize = sys_page_size;
1552                         if ((linux_version_code < (2*65536 + 6*256)) &&
1553                             (use_bsize > 4096))
1554                                 use_bsize = 4096;
1555                 }
1556                 if (sector_size && use_bsize < sector_size)
1557                         use_bsize = sector_size;
1558                 if ((blocksize < 0) && (use_bsize < (-blocksize)))
1559                         use_bsize = -blocksize;
1560                 blocksize = use_bsize;
1561                 fs_param.s_blocks_count /= blocksize / 1024;
1562         }
1563
1564         if (inode_ratio == 0) {
1565                 inode_ratio = get_int_from_profile(fs_types, "inode_ratio",
1566                                                    8192);
1567                 if (inode_ratio < blocksize)
1568                         inode_ratio = blocksize;
1569         }
1570
1571         fs_param.s_log_frag_size = fs_param.s_log_block_size =
1572                 int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
1573
1574         blocksize = EXT2_BLOCK_SIZE(&fs_param);
1575
1576         lazy_itable_init = get_bool_from_profile(fs_types, 
1577                                                  "lazy_itable_init", 0);
1578         
1579         if (extended_opts)
1580                 parse_extended_opts(&fs_param, extended_opts);
1581
1582         /* Since sparse_super is the default, we would only have a problem
1583          * here if it was explicitly disabled.
1584          */
1585         if ((fs_param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE) &&
1586             !(fs_param.s_feature_ro_compat&EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1587                 com_err(program_name, 0,
1588                         _("reserved online resize blocks not supported "
1589                           "on non-sparse filesystem"));
1590                 exit(1);
1591         }
1592
1593         if (fs_param.s_blocks_per_group) {
1594                 if (fs_param.s_blocks_per_group < 256 ||
1595                     fs_param.s_blocks_per_group > 8 * (unsigned) blocksize) {
1596                         com_err(program_name, 0,
1597                                 _("blocks per group count out of range"));
1598                         exit(1);
1599                 }
1600         }
1601
1602         if (inode_size == 0)
1603                 inode_size = get_int_from_profile(fs_types, "inode_size", 0);
1604
1605         if (inode_size && fs_param.s_rev_level >= EXT2_DYNAMIC_REV) {
1606                 if (inode_size < EXT2_GOOD_OLD_INODE_SIZE ||
1607                     inode_size > EXT2_BLOCK_SIZE(&fs_param) ||
1608                     inode_size & (inode_size - 1)) {
1609                         com_err(program_name, 0,
1610                                 _("invalid inode size %d (min %d/max %d)"),
1611                                 inode_size, EXT2_GOOD_OLD_INODE_SIZE,
1612                                 blocksize);
1613                         exit(1);
1614                 }
1615                 fs_param.s_inode_size = inode_size;
1616         }
1617
1618         /* Make sure number of inodes specified will fit in 32 bits */
1619         if (num_inodes == 0) {
1620                 unsigned long long n;
1621                 n = (unsigned long long) fs_param.s_blocks_count * blocksize / inode_ratio;
1622                 if (n > ~0U) {
1623                         com_err(program_name, 0,
1624                             _("too many inodes (%llu), raise inode ratio?"), n);
1625                         exit(1);
1626                 }
1627         } else if (num_inodes > ~0U) {
1628                 com_err(program_name, 0,
1629                         _("too many inodes (%llu), specify < 2^32 inodes"),
1630                           num_inodes);
1631                 exit(1);
1632         }
1633         /*
1634          * Calculate number of inodes based on the inode ratio
1635          */
1636         fs_param.s_inodes_count = num_inodes ? num_inodes : 
1637                 ((__u64) fs_param.s_blocks_count * blocksize)
1638                         / inode_ratio;
1639
1640         if ((((long long)fs_param.s_inodes_count) *
1641              (inode_size ? inode_size : EXT2_GOOD_OLD_INODE_SIZE)) >=
1642             (((long long)fs_param.s_blocks_count) * 
1643              EXT2_BLOCK_SIZE(&fs_param))) {
1644                 com_err(program_name, 0, _("inode_size (%u) * inodes_count "
1645                                           "(%u) too big for a\n\t"
1646                                           "filesystem with %lu blocks, "
1647                                           "specify higher inode_ratio (-i)\n\t"
1648                                           "or lower inode count (-N).\n"),
1649                         inode_size ? inode_size : EXT2_GOOD_OLD_INODE_SIZE,
1650                         fs_param.s_inodes_count, 
1651                         (unsigned long) fs_param.s_blocks_count);
1652                 exit(1);
1653         }
1654
1655         /*
1656          * Calculate number of blocks to reserve
1657          */
1658         fs_param.s_r_blocks_count = e2p_percent(reserved_ratio, 
1659                                                 fs_param.s_blocks_count);
1660 }
1661
1662 static int should_do_undo(const char *name)
1663 {
1664         errcode_t retval;
1665         io_channel channel;
1666         __u16   s_magic;
1667         struct ext2_super_block super;
1668         io_manager manager = unix_io_manager;
1669         int csum_flag, force_undo;
1670
1671         csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(&fs_param,
1672                                                EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1673         force_undo = get_int_from_profile(fs_types, "force_undo", 0);
1674         if (!force_undo && (!csum_flag || !lazy_itable_init))
1675                 return 0;
1676
1677         retval = manager->open(name, IO_FLAG_EXCLUSIVE,  &channel);
1678         if (retval) {
1679                 /*
1680                  * We don't handle error cases instead we
1681                  * declare that the file system doesn't exist
1682                  * and let the rest of mke2fs take care of
1683                  * error
1684                  */
1685                 retval = 0;
1686                 goto open_err_out;
1687         }
1688
1689         io_channel_set_blksize(channel, SUPERBLOCK_OFFSET);
1690         retval = io_channel_read_blk(channel, 1, -SUPERBLOCK_SIZE, &super);
1691         if (retval) {
1692                 retval = 0;
1693                 goto err_out;
1694         }
1695
1696 #if defined(WORDS_BIGENDIAN)
1697         s_magic = ext2fs_swab16(super.s_magic);
1698 #else
1699         s_magic = super.s_magic;
1700 #endif
1701
1702         if (s_magic == EXT2_SUPER_MAGIC)
1703                 retval = 1;
1704
1705 err_out:
1706         io_channel_close(channel);
1707
1708 open_err_out:
1709
1710         return retval;
1711 }
1712
1713 static int mke2fs_setup_tdb(const char *name, io_manager *io_ptr)
1714 {
1715         errcode_t retval = 0;
1716         char *tdb_dir, tdb_file[PATH_MAX];
1717         char *device_name, *tmp_name;
1718
1719         /*
1720          * Configuration via a conf file would be
1721          * nice
1722          */
1723         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
1724         if (!tdb_dir)
1725                 profile_get_string(profile, "defaults",
1726                                    "undo_dir", 0, "/var/lib/e2fsprogs",
1727                                    &tdb_dir);
1728
1729         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
1730             access(tdb_dir, W_OK))
1731                 return 0;
1732
1733         tmp_name = strdup(name);
1734         device_name = basename(tmp_name);
1735         sprintf(tdb_file, "%s/mke2fs-%s.e2undo", tdb_dir, device_name);
1736
1737         if (!access(tdb_file, F_OK)) {
1738                 if (unlink(tdb_file) < 0) {
1739                         retval = errno;
1740                         com_err(program_name, retval,
1741                                 _("while trying to delete %s"),
1742                                 tdb_file);
1743                         return retval;
1744                 }
1745         }
1746
1747         set_undo_io_backing_manager(*io_ptr);
1748         *io_ptr = undo_io_manager;
1749         set_undo_io_backup_file(tdb_file);
1750         printf(_("Overwriting existing filesystem; this can be undone "
1751                  "using the command:\n"
1752                  "    e2undo %s %s\n\n"), tdb_file, name);
1753 err_out:
1754         free(tmp_name);
1755         return retval;
1756 }
1757
1758 int main (int argc, char *argv[])
1759 {
1760         errcode_t       retval = 0;
1761         ext2_filsys     fs;
1762         badblocks_list  bb_list = 0;
1763         unsigned int    journal_blocks;
1764         unsigned int    i;
1765         int             val;
1766         io_manager      io_ptr;
1767         char            tdb_string[40];
1768
1769 #ifdef ENABLE_NLS
1770         setlocale(LC_MESSAGES, "");
1771         setlocale(LC_CTYPE, "");
1772         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1773         textdomain(NLS_CAT_NAME);
1774 #endif
1775         PRS(argc, argv);
1776
1777 #ifdef CONFIG_TESTIO_DEBUG
1778         io_ptr = test_io_manager;
1779         test_io_backing_manager = unix_io_manager;
1780 #else
1781         io_ptr = unix_io_manager;
1782 #endif
1783
1784         if (should_do_undo(device_name)) {
1785                 retval = mke2fs_setup_tdb(device_name, &io_ptr);
1786                 if (retval)
1787                         exit(1);
1788         }
1789
1790         /*
1791          * Initialize the superblock....
1792          */
1793         retval = ext2fs_initialize(device_name, EXT2_FLAG_EXCLUSIVE, &fs_param,
1794                                    io_ptr, &fs);
1795         if (retval) {
1796                 com_err(device_name, retval, _("while setting up superblock"));
1797                 exit(1);
1798         }
1799         sprintf(tdb_string, "tdb_data_size=%d", fs->blocksize <= 4096 ?
1800                 32768 : fs->blocksize * 8);
1801         io_channel_set_options(fs->io, tdb_string);
1802
1803         if (fs_param.s_flags & EXT2_FLAGS_TEST_FILESYS)
1804                 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
1805
1806         /*
1807          * Wipe out the old on-disk superblock
1808          */
1809         if (!noaction)
1810                 zap_sector(fs, 2, 6);
1811
1812         /*
1813          * Generate a UUID for it...
1814          */
1815         uuid_generate(fs->super->s_uuid);
1816
1817         /*
1818          * Initialize the directory index variables
1819          */
1820         fs->super->s_def_hash_version = EXT2_HASH_TEA;
1821         uuid_generate((unsigned char *) fs->super->s_hash_seed);
1822
1823         /*
1824          * Add "jitter" to the superblock's check interval so that we
1825          * don't check all the filesystems at the same time.  We use a
1826          * kludgy hack of using the UUID to derive a random jitter value.
1827          */
1828         for (i = 0, val = 0 ; i < sizeof(fs->super->s_uuid); i++)
1829                 val += fs->super->s_uuid[i];
1830         fs->super->s_max_mnt_count += val % EXT2_DFL_MAX_MNT_COUNT;
1831
1832         /*
1833          * Override the creator OS, if applicable
1834          */
1835         if (creator_os && !set_os(fs->super, creator_os)) {
1836                 com_err (program_name, 0, _("unknown os - %s"), creator_os);
1837                 exit(1);
1838         }
1839
1840         /*
1841          * For the Hurd, we will turn off filetype since it doesn't
1842          * support it.
1843          */
1844         if (fs->super->s_creator_os == EXT2_OS_HURD)
1845                 fs->super->s_feature_incompat &=
1846                         ~EXT2_FEATURE_INCOMPAT_FILETYPE;
1847
1848         /*
1849          * Set the volume label...
1850          */
1851         if (volume_label) {
1852                 memset(fs->super->s_volume_name, 0,
1853                        sizeof(fs->super->s_volume_name));
1854                 strncpy(fs->super->s_volume_name, volume_label,
1855                         sizeof(fs->super->s_volume_name));
1856         }
1857
1858         /*
1859          * Set the last mount directory
1860          */
1861         if (mount_dir) {
1862                 memset(fs->super->s_last_mounted, 0,
1863                        sizeof(fs->super->s_last_mounted));
1864                 strncpy(fs->super->s_last_mounted, mount_dir,
1865                         sizeof(fs->super->s_last_mounted));
1866         }
1867         
1868         if (!quiet || noaction)
1869                 show_stats(fs);
1870
1871         if (noaction)
1872                 exit(0);
1873
1874         if (fs->super->s_feature_incompat &
1875             EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
1876                 create_journal_dev(fs);
1877                 exit(ext2fs_close(fs) ? 1 : 0);
1878         }
1879
1880         if (bad_blocks_filename)
1881                 read_bb_file(fs, &bb_list, bad_blocks_filename);
1882         if (cflag)
1883                 test_disk(fs, &bb_list);
1884
1885         handle_bad_blocks(fs, bb_list);
1886         fs->stride = fs_stride = fs->super->s_raid_stride;
1887         retval = ext2fs_allocate_tables(fs);
1888         if (retval) {
1889                 com_err(program_name, retval,
1890                         _("while trying to allocate filesystem tables"));
1891                 exit(1);
1892         }
1893         if (super_only) {
1894                 fs->super->s_state |= EXT2_ERROR_FS;
1895                 fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY);
1896         } else {
1897                 /* rsv must be a power of two (64kB is MD RAID sb alignment) */
1898                 unsigned int rsv = 65536 / fs->blocksize;
1899                 unsigned long blocks = fs->super->s_blocks_count;
1900                 unsigned long start;
1901                 blk_t ret_blk;
1902
1903 #ifdef ZAP_BOOTBLOCK
1904                 zap_sector(fs, 0, 2);
1905 #endif
1906
1907                 /*
1908                  * Wipe out any old MD RAID (or other) metadata at the end
1909                  * of the device.  This will also verify that the device is
1910                  * as large as we think.  Be careful with very small devices.
1911                  */
1912                 start = (blocks & ~(rsv - 1));
1913                 if (start > rsv)
1914                         start -= rsv;
1915                 if (start > 0)
1916                         retval = ext2fs_zero_blocks(fs, start, blocks - start,
1917                                                     &ret_blk, NULL);
1918
1919                 if (retval) {
1920                         com_err(program_name, retval,
1921                                 _("while zeroing block %u at end of filesystem"),
1922                                 ret_blk);
1923                 }
1924                 write_inode_tables(fs, lazy_itable_init);
1925                 create_root_dir(fs);
1926                 create_lost_and_found(fs);
1927                 reserve_inodes(fs);
1928                 create_bad_block_inode(fs, bb_list);
1929                 if (fs->super->s_feature_compat & 
1930                     EXT2_FEATURE_COMPAT_RESIZE_INODE) {
1931                         retval = ext2fs_create_resize_inode(fs);
1932                         if (retval) {
1933                                 com_err("ext2fs_create_resize_inode", retval,
1934                                 _("while reserving blocks for online resize"));
1935                                 exit(1);
1936                         }
1937                 }
1938         }
1939
1940         if (journal_device) {
1941                 ext2_filsys     jfs;
1942                 
1943                 if (!force)
1944                         check_plausibility(journal_device); 
1945                 check_mount(journal_device, force, _("journal"));
1946
1947                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1948                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
1949                                      fs->blocksize, unix_io_manager, &jfs);
1950                 if (retval) {
1951                         com_err(program_name, retval,
1952                                 _("while trying to open journal device %s\n"),
1953                                 journal_device);
1954                         exit(1);
1955                 }
1956                 if (!quiet) {
1957                         printf(_("Adding journal to device %s: "), 
1958                                journal_device);
1959                         fflush(stdout);
1960                 }
1961                 retval = ext2fs_add_journal_device(fs, jfs);
1962                 if(retval) {
1963                         com_err (program_name, retval, 
1964                                  _("\n\twhile trying to add journal to device %s"), 
1965                                  journal_device);
1966                         exit(1);
1967                 }
1968                 if (!quiet)
1969                         printf(_("done\n"));
1970                 ext2fs_close(jfs);
1971                 free(journal_device);
1972         } else if ((journal_size) ||
1973                    (fs_param.s_feature_compat & 
1974                     EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1975                 journal_blocks = figure_journal_size(journal_size, fs);
1976
1977                 if (!journal_blocks) {
1978                         fs->super->s_feature_compat &=
1979                                 ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
1980                         goto no_journal;
1981                 }
1982                 if (!quiet) {
1983                         printf(_("Creating journal (%u blocks): "),
1984                                journal_blocks);
1985                         fflush(stdout);
1986                 }
1987                 retval = ext2fs_add_journal_inode(fs, journal_blocks,
1988                                                   journal_flags);
1989                 if (retval) {
1990                         com_err (program_name, retval,
1991                                  _("\n\twhile trying to create journal"));
1992                         exit(1);
1993                 }
1994                 if (!quiet)
1995                         printf(_("done\n"));
1996         }
1997 no_journal:
1998
1999         if (!quiet)
2000                 printf(_("Writing superblocks and "
2001                        "filesystem accounting information: "));
2002         retval = ext2fs_flush(fs);
2003         if (retval) {
2004                 fprintf(stderr,
2005                         _("\nWarning, had trouble writing out superblocks."));
2006         }
2007         if (!quiet) {
2008                 printf(_("done\n\n"));
2009                 if (!getenv("MKE2FS_SKIP_CHECK_MSG"))
2010                         print_check_message(fs);
2011         }
2012         val = ext2fs_close(fs);
2013         remove_error_table(&et_ext2_error_table);
2014         remove_error_table(&et_prof_error_table);
2015         profile_release(profile);
2016         return (retval || val) ? 1 : 0;
2017 }