misc/mke2fs.c

   1 /*
   2  * mke2fs.c - Make a ext2fs filesystem.
   3  *
   4  * Copyright (C) 1994, 1995, 1996, 1997 Theodore Ts'o.
   5  *
   6  * %Begin-Header%
   7  * This file may be redistributed under the terms of the GNU Public
   8  * License.
   9  * %End-Header%
  10  */
  11
  12 /* Usage: mke2fs [options] device
  13  *
  14  * The device may be a block device or a image of one, but this isn't
  15  * enforced (but it's not much fun on a character device :-).
  16  */
  17
  18 #include <stdio.h>
  19 #include <string.h>
  20 #include <fcntl.h>
  21 #include <ctype.h>
  22 #include <time.h>
  23 #ifdef linux
  24 #include <sys/utsname.h>
  25 #endif
  26 #ifdef HAVE_GETOPT_H
  27 #include <getopt.h>
  28 #else
  29 extern char *optarg;
  30 extern int optind;
  31 #endif
  32 #ifdef HAVE_UNISTD_H
  33 #include <unistd.h>
  34 #endif
  35 #ifdef HAVE_STDLIB_H
  36 #include <stdlib.h>
  37 #endif
  38 #ifdef HAVE_ERRNO_H
  39 #include <errno.h>
  40 #endif
  41 #ifdef HAVE_MNTENT_H
  42 #include <mntent.h>
  43 #endif
  44 #include <sys/ioctl.h>
  45 #include <sys/types.h>
  46
  47 #include <linux/ext2_fs.h>
  48
  49 #include "et/com_err.h"
  50 #include "uuid/uuid.h"
  51 #include "e2p/e2p.h"
  52 #include "ext2fs/ext2fs.h"
  53 #include "util.h"
  54 #include "../version.h"
  55 #include "nls-enable.h"
  56
  57 #define STRIDE_LENGTH 8
  58
  59 #ifndef __sparc__
  60 #define ZAP_BOOTBLOCK
  61 #endif
  62
  63 extern int isatty(int);
  64 extern FILE *fpopen(const char *cmd, const char *mode);
  65
  66 const char * program_name = "mke2fs";
  67 const char * device_name /* = NULL */;
  68
  69 /* Command line options */
  70 int     cflag;
  71 int     verbose;
  72 int     quiet;
  73 int     super_only;
  74 int     force;
  75 int     noaction;
  76 int     journal_size;
  77 int     journal_flags;
  78 char    *bad_blocks_filename;
  79 __u32   fs_stride;
  80
  81 struct ext2_super_block param;
  82 char *creator_os;
  83 char *volume_label;
  84 char *mount_dir;
  85 char *journal_device;
  86 int sync_kludge;        /* Set using the MKE2FS_SYNC env. option */
  87
  88 static void usage(void)
  89 {
  90         fprintf(stderr, _("Usage: %s [-c|-t|-l filename] [-b block-size] "
  91         "[-f fragment-size]\n\t[-i bytes-per-inode] [-j] [-J journal-options]"
  92         " [-N number-of-inodes]\n\t[-m reserved-blocks-percentage] "
  93         "[-o creator-os] [-g blocks-per-group]\n\t[-L volume-label] "
  94         "[-M last-mounted-directory] [-O feature[,...]]\n\t"
  95         "[-r fs-revision] [-R raid_opts] [-s sparse-super-flag]\n\t"
  96         "[-qvSV] device [blocks-count]\n"),
  97                 program_name);
  98         exit(1);
  99 }
 100
 101 static int int_log2(int arg)
 102 {
 103         int     l = 0;
 104
 105         arg >>= 1;
 106         while (arg) {
 107                 l++;
 108                 arg >>= 1;
 109         }
 110         return l;
 111 }
 112
 113 static int int_log10(unsigned int arg)
 114 {
 115         int     l;
 116
 117         for (l=0; arg ; l++)
 118                 arg = arg / 10;
 119         return l;
 120 }
 121
 122 /*
 123  * This function sets the default parameters for a filesystem
 124  *
 125  * The type is specified by the user.  The size is the maximum size
 126  * (in megabytes) for which a set of parameters applies, with a size
 127  * of zero meaning that it is the default parameter for the type.
 128  * Note that order is important in the table below.
 129  */
 130 static char default_str[] = "default";
 131 struct mke2fs_defaults {
 132         const char      *type;
 133         int             size;
 134         int             blocksize;
 135         int             inode_ratio;
 136 } settings[] = {
 137         { default_str, 0, 4096, 8192 },
 138         { default_str, 512, 1024, 4096 },
 139         { default_str, 3, 1024, 8192 },
 140         { "journal", 0, 4096, 8192 },
 141         { "news", 0, 4096, 4096 },
 142         { "largefile", 0, 4096, 1024 * 1024 },
 143         { "largefile4", 0, 4096, 4096 * 1024 },
 144         { 0, 0, 0, 0},
 145 };
 146
 147 static void set_fs_defaults(char *fs_type, struct ext2_super_block *super,
 148                             int blocksize, int *inode_ratio)
 149 {
 150         int     megs;
 151         int     ratio = 0;
 152         struct mke2fs_defaults *p;
 153
 154         megs = (super->s_blocks_count * (EXT2_BLOCK_SIZE(super) / 1024) /
 155                 1024);
 156         if (inode_ratio)
 157                 ratio = *inode_ratio;
 158         if (!fs_type)
 159                 fs_type = default_str;
 160         for (p = settings; p->type; p++) {
 161                 if ((strcmp(p->type, fs_type) != 0) &&
 162                     (strcmp(p->type, default_str) != 0))
 163                         continue;
 164                 if ((p->size != 0) &&
 165                     (megs > p->size))
 166                         continue;
 167                 if (ratio == 0)
 168                         *inode_ratio = p->inode_ratio;
 169                 if (blocksize == 0) {
 170                         super->s_log_frag_size = super->s_log_block_size =
 171                                 int_log2(p->blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
 172                 }
 173         }
 174         if (blocksize == 0)
 175                 super->s_blocks_count /= EXT2_BLOCK_SIZE(super) / 1024;
 176 }
 177
 178 /*
 179  * Helper function for read_bb_file and test_disk
 180  */
 181 static void invalid_block(ext2_filsys fs, blk_t blk)
 182 {
 183         printf(_("Bad block %u out of range; ignored.\n"), blk);
 184         return;
 185 }
 186
 187 /*
 188  * Reads the bad blocks list from a file
 189  */
 190 static void read_bb_file(ext2_filsys fs, badblocks_list *bb_list,
 191                          const char *bad_blocks_file)
 192 {
 193         FILE            *f;
 194         errcode_t       retval;
 195
 196         f = fopen(bad_blocks_file, "r");
 197         if (!f) {
 198                 com_err("read_bad_blocks_file", errno,
 199                         _("while trying to open %s"), bad_blocks_file);
 200                 exit(1);
 201         }
 202         retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
 203         fclose (f);
 204         if (retval) {
 205                 com_err("ext2fs_read_bb_FILE", retval,
 206                         _("while reading in list of bad blocks from file"));
 207                 exit(1);
 208         }
 209 }
 210
 211 /*
 212  * Runs the badblocks program to test the disk
 213  */
 214 static void test_disk(ext2_filsys fs, badblocks_list *bb_list)
 215 {
 216         FILE            *f;
 217         errcode_t       retval;
 218         char            buf[1024];
 219
 220         sprintf(buf, "badblocks -b %d %s%s %d", fs->blocksize,
 221                 quiet ? "" : "-s ", fs->device_name,
 222                 fs->super->s_blocks_count);
 223         if (verbose)
 224                 printf(_("Running command: %s\n"), buf);
 225         f = popen(buf, "r");
 226         if (!f) {
 227                 com_err("popen", errno,
 228                         _("while trying run '%s'"), buf);
 229                 exit(1);
 230         }
 231         retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
 232         pclose(f);
 233         if (retval) {
 234                 com_err("ext2fs_read_bb_FILE", retval,
 235                         _("while processing list of bad blocks from program"));
 236                 exit(1);
 237         }
 238 }
 239
 240 static void handle_bad_blocks(ext2_filsys fs, badblocks_list bb_list)
 241 {
 242         int                     i, j;
 243         int                     must_be_good;
 244         blk_t                   blk;
 245         badblocks_iterate       bb_iter;
 246         errcode_t               retval;
 247         blk_t                   group_block;
 248         int                     group;
 249         int                     group_bad;
 250
 251         if (!bb_list)
 252                 return;
 253
 254         /*
 255          * The primary superblock and group descriptors *must* be
 256          * good; if not, abort.
 257          */
 258         must_be_good = fs->super->s_first_data_block + 1 + fs->desc_blocks;
 259         for (i = fs->super->s_first_data_block; i <= must_be_good; i++) {
 260                 if (badblocks_list_test(bb_list, i)) {
 261                         fprintf(stderr, _("Block %d in primary "
 262                                 "superblock/group descriptor area bad.\n"), i);
 263                         fprintf(stderr, _("Blocks %d through %d must be good "
 264                                 "in order to build a filesystem.\n"),
 265                                 fs->super->s_first_data_block, must_be_good);
 266                         fprintf(stderr, _("Aborting....\n"));
 267                         exit(1);
 268                 }
 269         }
 270
 271         /*
 272          * See if any of the bad blocks are showing up in the backup
 273          * superblocks and/or group descriptors.  If so, issue a
 274          * warning and adjust the block counts appropriately.
 275          */
 276         group_block = fs->super->s_first_data_block +
 277                 fs->super->s_blocks_per_group;
 278
 279         for (i = 1; i < fs->group_desc_count; i++) {
 280                 group_bad = 0;
 281                 for (j=0; j < fs->desc_blocks+1; j++) {
 282                         if (badblocks_list_test(bb_list, group_block +
 283                                                 j)) {
 284                                 if (!group_bad)
 285                                         fprintf(stderr,
 286 _("Warning: the backup superblock/group descriptors at block %d contain\n"
 287 "       bad blocks.\n\n"),
 288                                                 group_block);
 289                                 group_bad++;
 290                                 group = ext2fs_group_of_blk(fs, group_block+j);
 291                                 fs->group_desc[group].bg_free_blocks_count++;
 292                                 fs->super->s_free_blocks_count++;
 293                         }
 294                 }
 295                 group_block += fs->super->s_blocks_per_group;
 296         }
 297
 298         /*
 299          * Mark all the bad blocks as used...
 300          */
 301         retval = badblocks_list_iterate_begin(bb_list, &bb_iter);
 302         if (retval) {
 303                 com_err("badblocks_list_iterate_begin", retval,
 304                         _("while marking bad blocks as used"));
 305                 exit(1);
 306         }
 307         while (badblocks_list_iterate(bb_iter, &blk))
 308                 ext2fs_mark_block_bitmap(fs->block_map, blk);
 309         badblocks_list_iterate_end(bb_iter);
 310 }
 311
 312 /*
 313  * These functions implement a generalized progress meter.
 314  */
 315 struct progress_struct {
 316         char            format[20];
 317         char            backup[80];
 318         __u32           max;
 319 };
 320
 321 static void progress_init(struct progress_struct *progress,
 322                           char *label,__u32 max)
 323 {
 324         int     i;
 325
 326         memset(progress, 0, sizeof(struct progress_struct));
 327         if (quiet)
 328                 return;
 329
 330         /*
 331          * Figure out how many digits we need
 332          */
 333         i = int_log10(max);
 334         sprintf(progress->format, "%%%dd/%%%dld", i, i);
 335         memset(progress->backup, '\b', sizeof(progress->backup)-1);
 336         progress->backup[sizeof(progress->backup)-1] = 0;
 337         if ((2*i)+1 < sizeof(progress->backup))
 338                 progress->backup[(2*i)+1] = 0;
 339         progress->max = max;
 340
 341         fputs(label, stdout);
 342         fflush(stdout);
 343 }
 344
 345 static void progress_update(struct progress_struct *progress, __u32 val)
 346 {
 347         if (progress->format[0] == 0)
 348                 return;
 349         printf(progress->format, val, progress->max);
 350         fputs(progress->backup, stdout);
 351 }
 352
 353 static void progress_close(struct progress_struct *progress)
 354 {
 355         if (progress->format[0] == 0)
 356                 return;
 357         fputs(_("done                            \n"), stdout);
 358 }
 359
 360
 361 /*
 362  * Helper function which zeros out _num_ blocks starting at _blk_.  In
 363  * case of an error, the details of the error is returned via _ret_blk_
 364  * and _ret_count_ if they are non-NULL pointers.  Returns 0 on
 365  * success, and an error code on an error.
 366  *
 367  * As a special case, if the first argument is NULL, then it will
 368  * attempt to free the static zeroizing buffer.  (This is to keep
 369  * programs that check for memory leaks happy.)
 370  */
 371 static errcode_t zero_blocks(ext2_filsys fs, blk_t blk, int num,
 372                              struct progress_struct *progress,
 373                              blk_t *ret_blk, int *ret_count)
 374 {
 375         int             j, count, next_update, next_update_incr;
 376         static char     *buf;
 377         errcode_t       retval;
 378
 379         /* If fs is null, clean up the static buffer and return */
 380         if (!fs) {
 381                 if (buf) {
 382                         free(buf);
 383                         buf = 0;
 384                 }
 385                 return 0;
 386         }
 387         /* Allocate the zeroizing buffer if necessary */
 388         if (!buf) {
 389                 buf = malloc(fs->blocksize * STRIDE_LENGTH);
 390                 if (!buf) {
 391                         com_err("malloc", ENOMEM,
 392                                 _("while allocating zeroizing buffer"));
 393                         exit(1);
 394                 }
 395                 memset(buf, 0, fs->blocksize * STRIDE_LENGTH);
 396         }
 397         /* OK, do the write loop */
 398         next_update = 0;
 399         next_update_incr = num / 100;
 400         if (next_update_incr < 1)
 401                 next_update_incr = 1;
 402         for (j=0; j < num; j += STRIDE_LENGTH, blk += STRIDE_LENGTH) {
 403                 if (num-j > STRIDE_LENGTH)
 404                         count = STRIDE_LENGTH;
 405                 else
 406                         count = num - j;
 407                 retval = io_channel_write_blk(fs->io, blk, count, buf);
 408                 if (retval) {
 409                         if (ret_count)
 410                                 *ret_count = count;
 411                         if (ret_blk)
 412                                 *ret_blk = blk;
 413                         return retval;
 414                 }
 415                 if (progress && j > next_update) {
 416                         next_update += num / 100;
 417                         progress_update(progress, blk);
 418                 }
 419         }
 420         return 0;
 421 }
 422
 423 static void write_inode_tables(ext2_filsys fs)
 424 {
 425         errcode_t       retval;
 426         blk_t           blk;
 427         int             i, num;
 428         struct progress_struct progress;
 429
 430         if (quiet)
 431                 memset(&progress, 0, sizeof(progress));
 432         else
 433                 progress_init(&progress, _("Writing inode tables: "),
 434                               fs->group_desc_count);
 435
 436         for (i = 0; i < fs->group_desc_count; i++) {
 437                 progress_update(&progress, i);
 438
 439                 blk = fs->group_desc[i].bg_inode_table;
 440                 num = fs->inode_blocks_per_group;
 441
 442                 retval = zero_blocks(fs, blk, num, 0, &blk, &num);
 443                 if (retval) {
 444                         printf(_("\nCould not write %d blocks "
 445                                  "in inode table starting at %d: %s\n"),
 446                                num, blk, error_message(retval));
 447                         exit(1);
 448                 }
 449                 if (sync_kludge) {
 450                         if (sync_kludge == 1)
 451                                 sync();
 452                         else if ((i % sync_kludge) == 0)
 453                                 sync();
 454                 }
 455         }
 456         zero_blocks(0, 0, 0, 0, 0, 0);
 457         progress_close(&progress);
 458 }
 459
 460 static void create_root_dir(ext2_filsys fs)
 461 {
 462         errcode_t       retval;
 463         struct ext2_inode       inode;
 464
 465         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0);
 466         if (retval) {
 467                 com_err("ext2fs_mkdir", retval, _("while creating root dir"));
 468                 exit(1);
 469         }
 470         if (geteuid()) {
 471                 retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode);
 472                 if (retval) {
 473                         com_err("ext2fs_read_inode", retval,
 474                                 _("while reading root inode"));
 475                         exit(1);
 476                 }
 477                 inode.i_uid = getuid();
 478                 if (inode.i_uid)
 479                         inode.i_gid = getgid();
 480                 retval = ext2fs_write_inode(fs, EXT2_ROOT_INO, &inode);
 481                 if (retval) {
 482                         com_err("ext2fs_write_inode", retval,
 483                                 _("while setting root inode ownership"));
 484                         exit(1);
 485                 }
 486         }
 487 }
 488
 489 static void create_lost_and_found(ext2_filsys fs)
 490 {
 491         errcode_t               retval;
 492         ext2_ino_t              ino;
 493         const char              *name = "lost+found";
 494         int                     i;
 495         int                     lpf_size = 0;
 496
 497         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name);
 498         if (retval) {
 499                 com_err("ext2fs_mkdir", retval,
 500                         _("while creating /lost+found"));
 501                 exit(1);
 502         }
 503
 504         retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino);
 505         if (retval) {
 506                 com_err("ext2_lookup", retval,
 507                         _("while looking up /lost+found"));
 508                 exit(1);
 509         }
 510
 511         for (i=1; i < EXT2_NDIR_BLOCKS; i++) {
 512                 if ((lpf_size += fs->blocksize) >= 16*1024)
 513                         break;
 514                 retval = ext2fs_expand_dir(fs, ino);
 515                 if (retval) {
 516                         com_err("ext2fs_expand_dir", retval,
 517                                 _("while expanding /lost+found"));
 518                         exit(1);
 519                 }
 520         }
 521 }
 522
 523 static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list)
 524 {
 525         errcode_t       retval;
 526
 527         ext2fs_mark_inode_bitmap(fs->inode_map, EXT2_BAD_INO);
 528         fs->group_desc[0].bg_free_inodes_count--;
 529         fs->super->s_free_inodes_count--;
 530         retval = ext2fs_update_bb_inode(fs, bb_list);
 531         if (retval) {
 532                 com_err("ext2fs_update_bb_inode", retval,
 533                         _("while setting bad block inode"));
 534                 exit(1);
 535         }
 536
 537 }
 538
 539 static void reserve_inodes(ext2_filsys fs)
 540 {
 541         ext2_ino_t      i;
 542         int             group;
 543
 544         for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++) {
 545                 ext2fs_mark_inode_bitmap(fs->inode_map, i);
 546                 group = ext2fs_group_of_ino(fs, i);
 547                 fs->group_desc[group].bg_free_inodes_count--;
 548                 fs->super->s_free_inodes_count--;
 549         }
 550         ext2fs_mark_ib_dirty(fs);
 551 }
 552
 553 static void zap_sector(ext2_filsys fs, int sect)
 554 {
 555         char buf[512];
 556         int retval;
 557
 558         memset(buf, 0, 512);
 559
 560         io_channel_set_blksize(fs->io, 512);
 561         retval = io_channel_write_blk(fs->io, sect, -512, buf);
 562         io_channel_set_blksize(fs->io, fs->blocksize);
 563         if (retval)
 564                 printf(_("Warning: could not erase sector %d: %s\n"), sect,
 565                        error_message(retval));
 566 }
 567
 568 static void create_journal_dev(ext2_filsys fs)
 569 {
 570         struct progress_struct progress;
 571         errcode_t               retval;
 572         char                    *buf;
 573         blk_t                   blk;
 574         int                     count;
 575
 576         if (quiet)
 577                 memset(&progress, 0, sizeof(progress));
 578         else
 579                 progress_init(&progress, _("Zeroing journal device: "),
 580                               fs->super->s_blocks_count);
 581
 582         retval = zero_blocks(fs, 0, fs->super->s_blocks_count,
 583                              &progress, &blk, &count);
 584         if (retval) {
 585                 com_err("create_journal_dev", retval,
 586                         "while zeroing journal device (block %u, count %d",
 587                         blk, count);
 588                 exit(1);
 589         }
 590         zero_blocks(0, 0, 0, 0, 0, 0);
 591
 592         retval = ext2fs_create_journal_superblock(fs,
 593                                   fs->super->s_blocks_count, 0, &buf);
 594         if (retval) {
 595                 com_err("create_journal_dev", retval,
 596                         _("while initialization journal superblock"));
 597                 exit(1);
 598         }
 599         retval = io_channel_write_blk(fs->io,
 600                                       fs->super->s_first_data_block+1,
 601                                       1, buf);
 602         if (retval) {
 603                 com_err("create_journal_dev", retval,
 604                         _("while writing journal superblock"));
 605                 exit(1);
 606         }
 607         progress_close(&progress);
 608 }
 609
 610 static void show_stats(ext2_filsys fs)
 611 {
 612         struct ext2_super_block *s = fs->super;
 613         char                    buf[80];
 614         blk_t                   group_block;
 615         int                     i, need, col_left;
 616
 617         if (param.s_blocks_count != s->s_blocks_count)
 618                 printf(_("warning: %d blocks unused.\n\n"),
 619                        param.s_blocks_count - s->s_blocks_count);
 620
 621         memset(buf, 0, sizeof(buf));
 622         strncpy(buf, s->s_volume_name, sizeof(s->s_volume_name));
 623         printf(_("Filesystem label=%s\n"), buf);
 624         printf(_("OS type: "));
 625         switch (fs->super->s_creator_os) {
 626             case EXT2_OS_LINUX: printf ("Linux"); break;
 627             case EXT2_OS_HURD:  printf ("GNU/Hurd");   break;
 628             case EXT2_OS_MASIX: printf ("Masix"); break;
 629             default:            printf (_("(unknown os)"));
 630         }
 631         printf("\n");
 632         printf(_("Block size=%u (log=%u)\n"), fs->blocksize,
 633                 s->s_log_block_size);
 634         printf(_("Fragment size=%u (log=%u)\n"), fs->fragsize,
 635                 s->s_log_frag_size);
 636         printf(_("%u inodes, %u blocks\n"), s->s_inodes_count,
 637                s->s_blocks_count);
 638         printf(_("%u blocks (%2.2f%%) reserved for the super user\n"),
 639                 s->s_r_blocks_count,
 640                100.0 * s->s_r_blocks_count / s->s_blocks_count);
 641         printf(_("First data block=%u\n"), s->s_first_data_block);
 642         if (fs->group_desc_count > 1)
 643                 printf(_("%u block groups\n"), fs->group_desc_count);
 644         else
 645                 printf(_("%u block group\n"), fs->group_desc_count);
 646         printf(_("%u blocks per group, %u fragments per group\n"),
 647                s->s_blocks_per_group, s->s_frags_per_group);
 648         printf(_("%u inodes per group\n"), s->s_inodes_per_group);
 649
 650         if (fs->group_desc_count == 1) {
 651                 printf("\n");
 652                 return;
 653         }
 654
 655         printf(_("Superblock backups stored on blocks: "));
 656         group_block = s->s_first_data_block;
 657         col_left = 0;
 658         for (i = 1; i < fs->group_desc_count; i++) {
 659                 group_block += s->s_blocks_per_group;
 660                 if (!ext2fs_bg_has_super(fs, i))
 661                         continue;
 662                 if (i != 1)
 663                         printf(", ");
 664                 need = int_log10(group_block) + 2;
 665                 if (need > col_left) {
 666                         printf("\n\t");
 667                         col_left = 72;
 668                 }
 669                 col_left -= need;
 670                 printf("%u", group_block);
 671         }
 672         printf("\n\n");
 673 }
 674
 675 /*
 676  * Set the S_CREATOR_OS field.  Return true if OS is known,
 677  * otherwise, 0.
 678  */
 679 static int set_os(struct ext2_super_block *sb, char *os)
 680 {
 681         if (isdigit (*os))
 682                 sb->s_creator_os = atoi (os);
 683         else if (strcasecmp(os, "linux") == 0)
 684                 sb->s_creator_os = EXT2_OS_LINUX;
 685         else if (strcasecmp(os, "GNU") == 0 || strcasecmp(os, "hurd") == 0)
 686                 sb->s_creator_os = EXT2_OS_HURD;
 687         else if (strcasecmp(os, "masix") == 0)
 688                 sb->s_creator_os = EXT2_OS_MASIX;
 689         else
 690                 return 0;
 691         return 1;
 692 }
 693
 694 #define PATH_SET "PATH=/sbin"
 695
 696 static void parse_raid_opts(const char *opts)
 697 {
 698         char    *buf, *token, *next, *p, *arg;
 699         int     len;
 700         int     raid_usage = 0;
 701
 702         len = strlen(opts);
 703         buf = malloc(len+1);
 704         if (!buf) {
 705                 fprintf(stderr, _("Couldn't allocate memory to parse "
 706                         "raid options!\n"));
 707                 exit(1);
 708         }
 709         strcpy(buf, opts);
 710         for (token = buf; token && *token; token = next) {
 711                 p = strchr(token, ',');
 712                 next = 0;
 713                 if (p) {
 714                         *p = 0;
 715                         next = p+1;
 716                 }
 717                 arg = strchr(token, '=');
 718                 if (arg) {
 719                         *arg = 0;
 720                         arg++;
 721                 }
 722                 if (strcmp(token, "stride") == 0) {
 723                         if (!arg) {
 724                                 raid_usage++;
 725                                 continue;
 726                         }
 727                         fs_stride = strtoul(arg, &p, 0);
 728                         if (*p || (fs_stride == 0)) {
 729                                 fprintf(stderr,
 730                                         _("Invalid stride parameter.\n"));
 731                                 raid_usage++;
 732                                 continue;
 733                         }
 734                 } else
 735                         raid_usage++;
 736         }
 737         if (raid_usage) {
 738                 fprintf(stderr, _("\nBad raid options specified.\n\n"
 739                         "Raid options are separated by commas, "
 740                         "and may take an argument which\n"
 741                         "\tis set off by an equals ('=') sign.\n\n"
 742                         "Valid raid options are:\n"
 743                         "\tstride=<stride length in blocks>\n\n"));
 744                 exit(1);
 745         }
 746 }
 747
 748 static __u32 ok_features[3] = {
 749         EXT3_FEATURE_COMPAT_HAS_JOURNAL,        /* Compat */
 750         EXT2_FEATURE_INCOMPAT_FILETYPE|         /* Incompat */
 751                 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV,
 752         EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER     /* R/O compat */
 753 };
 754
 755
 756 static void PRS(int argc, char *argv[])
 757 {
 758         int             c;
 759         int             size;
 760         char *          tmp;
 761         blk_t           group_blk_max = 8192;
 762         int             blocksize = 0;
 763         int             inode_ratio = 0;
 764         int             reserved_ratio = 5;
 765         ext2_ino_t      num_inodes = 0;
 766         errcode_t       retval;
 767         int             sparse_option = 1;
 768         char *          oldpath = getenv("PATH");
 769         char *          raid_opts = 0;
 770         char *          fs_type = 0;
 771         const char *    feature_set = "filetype";
 772         blk_t           dev_size;
 773 #ifdef linux
 774         struct          utsname ut;
 775
 776         if (uname(&ut)) {
 777                 perror("uname");
 778                 exit(1);
 779         }
 780         if ((ut.release[0] == '1') ||
 781             (ut.release[0] == '2' && ut.release[1] == '.' &&
 782              ut.release[2] < '2' && ut.release[3] == '.'))
 783                 feature_set = NULL;
 784 #endif
 785         /* Update our PATH to include /sbin  */
 786         if (oldpath) {
 787                 char *newpath;
 788
 789                 newpath = malloc(sizeof (PATH_SET) + 1 + strlen (oldpath));
 790                 strcpy (newpath, PATH_SET);
 791                 strcat (newpath, ":");
 792                 strcat (newpath, oldpath);
 793                 putenv (newpath);
 794         } else
 795                 putenv (PATH_SET);
 796
 797         tmp = getenv("MKE2FS_SYNC");
 798         if (tmp)
 799                 sync_kludge = atoi(tmp);
 800
 801         setbuf(stdout, NULL);
 802         setbuf(stderr, NULL);
 803         initialize_ext2_error_table();
 804         memset(&param, 0, sizeof(struct ext2_super_block));
 805         param.s_rev_level = 1;  /* Create revision 1 filesystems now */
 806
 807         fprintf (stderr, _("mke2fs %s, %s for EXT2 FS %s, %s\n"),
 808                  E2FSPROGS_VERSION, E2FSPROGS_DATE,
 809                  EXT2FS_VERSION, EXT2FS_DATE);
 810         if (argc && *argv)
 811                 program_name = *argv;
 812         while ((c = getopt (argc, argv,
 813                     "b:cf:g:i:jl:m:no:qr:R:s:tvI:J:ST:FL:M:N:O:V")) != EOF)
 814                 switch (c) {
 815                 case 'b':
 816                         blocksize = strtoul(optarg, &tmp, 0);
 817                         if (blocksize < 1024 || blocksize > 4096 || *tmp) {
 818                                 com_err(program_name, 0,
 819                                         _("bad block size - %s"), optarg);
 820                                 exit(1);
 821                         }
 822                         param.s_log_block_size =
 823                                 int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
 824                         group_blk_max = blocksize * 8;
 825                         break;
 826                 case 'c':
 827                 case 't':       /* Check for bad blocks */
 828                         cflag = 1;
 829                         break;
 830                 case 'f':
 831                         size = strtoul(optarg, &tmp, 0);
 832                         if (size < 1024 || size > 4096 || *tmp) {
 833                                 com_err(program_name, 0,
 834                                         _("bad fragment size - %s"),
 835                                         optarg);
 836                                 exit(1);
 837                         }
 838                         param.s_log_frag_size =
 839                                 int_log2(size >> EXT2_MIN_BLOCK_LOG_SIZE);
 840                         printf(_("Warning: fragments not supported.  "
 841                                "Ignoring -f option\n"));
 842                         break;
 843                 case 'g':
 844                         param.s_blocks_per_group = strtoul(optarg, &tmp, 0);
 845                         if (*tmp) {
 846                                 com_err(program_name, 0,
 847                                         _("Illegal number for blocks per group"));
 848                                 exit(1);
 849                         }
 850                         if ((param.s_blocks_per_group % 8) != 0) {
 851                                 com_err(program_name, 0,
 852                                 _("blocks per group must be multiple of 8"));
 853                                 exit(1);
 854                         }
 855                         break;
 856                 case 'i':
 857                         inode_ratio = strtoul(optarg, &tmp, 0);
 858                         if (inode_ratio < 1024 || inode_ratio > 4096 * 1024 ||
 859                             *tmp) {
 860                                 com_err(program_name, 0,
 861                                         _("bad inode ratio - %s"), optarg);
 862                                 exit(1);
 863                         }
 864                         break;
 865                 case 'J':
 866                         parse_journal_opts(optarg);
 867                         break;
 868                 case 'j':
 869                         if (!journal_size)
 870                                 journal_size = -1;
 871                         break;
 872                 case 'l':
 873                         bad_blocks_filename = malloc(strlen(optarg)+1);
 874                         if (!bad_blocks_filename) {
 875                                 com_err(program_name, ENOMEM,
 876                                         _("in malloc for bad_blocks_filename"));
 877                                 exit(1);
 878                         }
 879                         strcpy(bad_blocks_filename, optarg);
 880                         break;
 881                 case 'm':
 882                         reserved_ratio = strtoul(optarg, &tmp, 0);
 883                         if (reserved_ratio > 50 || *tmp) {
 884                                 com_err(program_name, 0,
 885                                         _("bad reserved blocks percent - %s"),
 886                                         optarg);
 887                                 exit(1);
 888                         }
 889                         break;
 890                 case 'n':
 891                         noaction++;
 892                         break;
 893                 case 'o':
 894                         creator_os = optarg;
 895                         break;
 896                 case 'r':
 897                         param.s_rev_level = atoi(optarg);
 898                         break;
 899                 case 's':
 900                         sparse_option = atoi(optarg);
 901                         break;
 902 #ifdef EXT2_DYNAMIC_REV
 903                 case 'I':
 904                         param.s_inode_size = atoi(optarg);
 905                         break;
 906 #endif
 907                 case 'N':
 908                         num_inodes = atoi(optarg);
 909                         break;
 910                 case 'v':
 911                         verbose = 1;
 912                         break;
 913                 case 'q':
 914                         quiet = 1;
 915                         break;
 916                 case 'F':
 917                         force = 1;
 918                         break;
 919                 case 'L':
 920                         volume_label = optarg;
 921                         break;
 922                 case 'M':
 923                         mount_dir = optarg;
 924                         break;
 925                 case 'O':
 926                         feature_set = optarg;
 927                         break;
 928                 case 'R':
 929                         raid_opts = optarg;
 930                         break;
 931                 case 'S':
 932                         super_only = 1;
 933                         break;
 934                 case 'T':
 935                         fs_type = optarg;
 936                         break;
 937                 case 'V':
 938                         /* Print version number and exit */
 939                         fprintf(stderr, _("\tUsing %s\n"),
 940                                 error_message(EXT2_ET_BASE));
 941                         exit(0);
 942                 default:
 943                         usage();
 944                 }
 945         if (optind == argc)
 946                 usage();
 947         device_name = argv[optind];
 948         optind++;
 949         if (optind < argc) {
 950                 unsigned long tmp2  = strtoul(argv[optind++], &tmp, 0);
 951
 952                 if ((*tmp) || (tmp2 > 0xfffffffful)) {
 953                         com_err(program_name, 0, _("bad blocks count - %s"),
 954                                 argv[optind - 1]);
 955                         exit(1);
 956                 }
 957                 param.s_blocks_count = tmp2;
 958         }
 959         if (optind < argc)
 960                 usage();
 961
 962         if (raid_opts)
 963                 parse_raid_opts(raid_opts);
 964
 965         /* Parse the user-supplied feature_set, if any. */
 966         if (feature_set && !strncasecmp(feature_set, "none", 4))
 967                 feature_set = NULL;
 968         if (feature_set && e2p_edit_feature(feature_set,
 969                                             &param.s_feature_compat,
 970                                             ok_features)) {
 971                 fprintf(stderr, _("Invalid filesystem option set: %s\n"),
 972                         feature_set);
 973                 exit(1);
 974         }
 975
 976         if (!force)
 977                 check_plausibility(device_name);
 978         check_mount(device_name, force, _("filesystem"));
 979
 980         param.s_log_frag_size = param.s_log_block_size;
 981
 982         if (noaction && param.s_blocks_count) {
 983                 dev_size = param.s_blocks_count;
 984                 retval = 0;
 985         } else
 986                 retval = ext2fs_get_device_size(device_name,
 987                                                 EXT2_BLOCK_SIZE(&param),
 988                                                 &dev_size);
 989         if (retval && (retval != EXT2_ET_UNIMPLEMENTED)) {
 990                 com_err(program_name, retval,
 991                         _("while trying to determine filesystem size"));
 992                 exit(1);
 993         }
 994         if (!param.s_blocks_count) {
 995                 if (retval == EXT2_ET_UNIMPLEMENTED) {
 996                         com_err(program_name, 0,
 997                                 _("Couldn't determine device size; you "
 998                                 "must specify\nthe size of the "
 999                                 "filesystem\n"));
1000                         exit(1);
1001                 } else {
1002                         if (dev_size == 0) {
1003                                 com_err(program_name, 0,
1004                                 _("Device size reported to be zero.  "
1005                                   "Invalid partition specified, or\n\t"
1006                                   "partition table wasn't reread "
1007                                   "after running fdisk, due to\n\t"
1008                                   "a modified partition being busy "
1009                                   "and in use.  You may need to reboot\n\t"
1010                                   "to re-read your partition table.\n"
1011                                   ));
1012                                 exit(1);
1013                         }
1014                         param.s_blocks_count = dev_size;
1015                 }
1016
1017         } else if (!force && (param.s_blocks_count > dev_size)) {
1018                 com_err(program_name, 0,
1019                         _("Filesystem larger than apparent filesystem size."));
1020                 proceed_question();
1021         }
1022
1023         /*
1024          * If the user asked for HAS_JOURNAL, then make sure a journal
1025          * gets created.
1026          */
1027         if ((param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
1028             !journal_size)
1029                 journal_size = -1;
1030         if (!fs_type &&
1031             (param.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV))
1032                 fs_type = "journal";
1033         set_fs_defaults(fs_type, &param, blocksize, &inode_ratio);
1034
1035         if (param.s_blocks_per_group) {
1036                 if (param.s_blocks_per_group < 256 ||
1037                     param.s_blocks_per_group > group_blk_max || *tmp) {
1038                         com_err(program_name, 0,
1039                                 _("blocks per group count out of range"));
1040                         exit(1);
1041                 }
1042         }
1043
1044         /*
1045          * Calculate number of inodes based on the inode ratio
1046          */
1047         param.s_inodes_count = num_inodes ? num_inodes :
1048                 ((__u64) param.s_blocks_count * EXT2_BLOCK_SIZE(&param))
1049                         / inode_ratio;
1050
1051         /*
1052          * Calculate number of blocks to reserve
1053          */
1054         param.s_r_blocks_count = (param.s_blocks_count * reserved_ratio) / 100;
1055
1056         /* Turn off features not supported by the earlier filesystem version */
1057         if (param.s_rev_level == 0) {
1058                 sparse_option = 0;
1059                 feature_set = NULL;
1060         }
1061         if (sparse_option)
1062                 param.s_feature_ro_compat |=
1063                         EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
1064
1065 }
1066
1067 int main (int argc, char *argv[])
1068 {
1069         errcode_t       retval = 0;
1070         ext2_filsys     fs;
1071         badblocks_list  bb_list = 0;
1072         int             journal_blocks;
1073         int             i, val;
1074
1075 #ifdef ENABLE_NLS
1076         setlocale(LC_MESSAGES, "");
1077         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1078         textdomain(NLS_CAT_NAME);
1079 #endif
1080         PRS(argc, argv);
1081
1082         /*
1083          * Initialize the superblock....
1084          */
1085         retval = ext2fs_initialize(device_name, 0, &param,
1086                                    unix_io_manager, &fs);
1087         if (retval) {
1088                 com_err(device_name, retval, _("while setting up superblock"));
1089                 exit(1);
1090         }
1091
1092         /*
1093          * Wipe out the old on-disk superblock
1094          */
1095         zap_sector(fs, 2);
1096
1097         /*
1098          * Generate a UUID for it...
1099          */
1100         uuid_generate(fs->super->s_uuid);
1101
1102         /*
1103          * Add "jitter" to the superblock's check interval so that we
1104          * don't check all the filesystems at the same time.  We use a
1105          * kludgy hack of using the UUID to derive a random jitter value.
1106          */
1107         for (i = 0, val = 0 ; i < sizeof(fs->super->s_uuid); i++)
1108                 val += fs->super->s_uuid[i];
1109         fs->super->s_max_mnt_count += val % EXT2_DFL_MAX_MNT_COUNT;
1110
1111         /*
1112          * Override the creator OS, if applicable
1113          */
1114         if (creator_os && !set_os(fs->super, creator_os)) {
1115                 com_err (program_name, 0, _("unknown os - %s"), creator_os);
1116                 exit(1);
1117         }
1118
1119         /*
1120          * For the Hurd, we will turn off filetype since it doesn't
1121          * support it.
1122          */
1123         if (fs->super->s_creator_os == EXT2_OS_HURD)
1124                 fs->super->s_feature_incompat &=
1125                         ~EXT2_FEATURE_INCOMPAT_FILETYPE;
1126
1127         /*
1128          * Set the volume label...
1129          */
1130         if (volume_label) {
1131                 memset(fs->super->s_volume_name, 0,
1132                        sizeof(fs->super->s_volume_name));
1133                 strncpy(fs->super->s_volume_name, volume_label,
1134                         sizeof(fs->super->s_volume_name));
1135         }
1136
1137         /*
1138          * Set the last mount directory
1139          */
1140         if (mount_dir) {
1141                 memset(fs->super->s_last_mounted, 0,
1142                        sizeof(fs->super->s_last_mounted));
1143                 strncpy(fs->super->s_last_mounted, mount_dir,
1144                         sizeof(fs->super->s_last_mounted));
1145         }
1146
1147         if (!quiet || noaction)
1148                 show_stats(fs);
1149
1150         if (noaction)
1151                 exit(0);
1152
1153         if (fs->super->s_feature_incompat &
1154             EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
1155                 create_journal_dev(fs);
1156                 ext2fs_close(fs);
1157                 exit(0);
1158         }
1159
1160         if (bad_blocks_filename)
1161                 read_bb_file(fs, &bb_list, bad_blocks_filename);
1162         if (cflag)
1163                 test_disk(fs, &bb_list);
1164
1165         handle_bad_blocks(fs, bb_list);
1166         fs->stride = fs_stride;
1167         retval = ext2fs_allocate_tables(fs);
1168         if (retval) {
1169                 com_err(program_name, retval,
1170                         _("while trying to allocate filesystem tables"));
1171                 exit(1);
1172         }
1173         if (super_only) {
1174                 fs->super->s_state |= EXT2_ERROR_FS;
1175                 fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY);
1176         } else {
1177                 write_inode_tables(fs);
1178                 create_root_dir(fs);
1179                 create_lost_and_found(fs);
1180                 reserve_inodes(fs);
1181                 create_bad_block_inode(fs, bb_list);
1182 #ifdef ZAP_BOOTBLOCK
1183                 zap_sector(fs, 0);
1184 #endif
1185         }
1186
1187         if (journal_device) {
1188                 ext2_filsys     jfs;
1189
1190                 if (!force)
1191                         check_plausibility(journal_device);
1192                 check_mount(journal_device, force, _("journal"));
1193
1194                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1195                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
1196                                      fs->blocksize, unix_io_manager, &jfs);
1197                 if (retval) {
1198                         com_err(program_name, retval,
1199                                 _("while trying to open journal device %s\n"),
1200                                 journal_device);
1201                         exit(1);
1202                 }
1203                 if (!quiet) {
1204                         printf(_("Creating journal on device %s: "),
1205                                journal_device);
1206                         fflush(stdout);
1207                 }
1208                 retval = ext2fs_add_journal_device(fs, jfs);
1209                 if(retval) {
1210                         com_err (program_name, retval,
1211                                  _("while trying to add journal to device %s"),
1212                                  journal_device);
1213                         exit(1);
1214                 }
1215                 if (!quiet)
1216                         printf(_("done\n"));
1217                 ext2fs_close(jfs);
1218         } else if (journal_size) {
1219                 if (journal_size < 0)
1220                         journal_blocks = journal_default_size(fs->super->s_blocks_count);
1221                 else
1222                         journal_blocks = journal_size * 1024 /
1223                                 (fs->blocksize  / 1024);
1224
1225                 if (!journal_blocks) {
1226                         fs->super->s_feature_compat &=
1227                                 ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
1228                         goto no_journal;
1229                 }
1230                 if (!quiet) {
1231                         printf(_("Creating journal (%d blocks): "),
1232                                journal_blocks);
1233                         fflush(stdout);
1234                 }
1235                 retval = ext2fs_add_journal_inode(fs, journal_blocks,
1236                                                   journal_flags);
1237                 if (retval) {
1238                         com_err (program_name, retval,
1239                                  _("while trying to create journal"));
1240                         exit(1);
1241                 }
1242                 if (!quiet)
1243                         printf(_("done\n"));
1244         }
1245 no_journal:
1246
1247         if (!quiet)
1248                 printf(_("Writing superblocks and "
1249                        "filesystem accounting information: "));
1250         retval = ext2fs_flush(fs);
1251         if (retval) {
1252                 printf(_("\nWarning, had trouble writing out superblocks."));
1253         }
1254         if (!quiet) {
1255                 printf(_("done\n"));
1256                 printf(_("e2fsck will be run every %d mounts or %4g days"),
1257                        fs->super->s_max_mnt_count,
1258                        (double)fs->super->s_checkinterval / (3600 * 24));
1259         }
1260         ext2fs_close(fs);
1261         return 0;
1262 }