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 #ifdef HAVE_LINUX_MAJOR_H
  49 #include <linux/major.h>
  50 #include <sys/stat.h>           /* Only need sys/stat.h for major nr test */
  51 #endif
  52
  53 #include "et/com_err.h"
  54 #include "uuid/uuid.h"
  55 #include "e2p/e2p.h"
  56 #include "ext2fs/ext2fs.h"
  57 #include "../version.h"
  58 #include "nls-enable.h"
  59
  60 /* Everything is STDC, these days */
  61 #define NOARGS void
  62
  63 #define STRIDE_LENGTH 8
  64
  65 #ifndef __sparc__
  66 #define ZAP_BOOTBLOCK
  67 #endif
  68
  69 extern int isatty(int);
  70 extern FILE *fpopen(const char *cmd, const char *mode);
  71
  72 const char * program_name = "mke2fs";
  73 const char * device_name /* = NULL */;
  74
  75 /* Command line options */
  76 int     cflag /* = 0 */ ;
  77 int     verbose /* = 0 */ ;
  78 int     quiet /* = 0 */ ;
  79 int     super_only /* = 0 */ ;
  80 int     force /* = 0 */ ;
  81 int     noaction /* = 0 */ ;
  82 int     journal_size /* = 0 */ ;
  83 int     journal_flags /* = 0 */ ;
  84 char    *bad_blocks_filename /* = 0 */ ;
  85 __u32   fs_stride /* = 0 */ ;
  86
  87 struct ext2_super_block param;
  88 char *creator_os /* = NULL */ ;
  89 char *volume_label /* = NULL */ ;
  90 char *mount_dir /* = NULL */ ;
  91 char *journal_device /* = NULL */ ;
  92
  93 static void usage(NOARGS);
  94 static void check_plausibility(const char *device);
  95 static void check_mount(const char *device);
  96
  97 static void usage(NOARGS)
  98 {
  99         fprintf(stderr, _("Usage: %s [-c|-t|-l filename] [-b block-size] "
 100         "[-f fragment-size]\n\t[-i bytes-per-inode] [-j journal-options]"
 101         " [-N number-of-inodes]\n\t[-m reserved-blocks-percentage] "
 102         "[-o creator-os] [-g blocks-per-group]\n\t[-L volume-label] "
 103         "[-M last-mounted-directory] [-O feature[,...]]\n\t"
 104         "[-r fs-revision] [-R raid_opts] [-s sparse-super-flag]\n\t"
 105         "[-qvSV] device [blocks-count]\n"),
 106                 program_name);
 107         exit(1);
 108 }
 109
 110 static int int_log2(int arg)
 111 {
 112         int     l = 0;
 113
 114         arg >>= 1;
 115         while (arg) {
 116                 l++;
 117                 arg >>= 1;
 118         }
 119         return l;
 120 }
 121
 122 static int int_log10(unsigned int arg)
 123 {
 124         int     l;
 125
 126         for (l=0; arg ; l++)
 127                 arg = arg / 10;
 128         return l;
 129 }
 130
 131 static void proceed_question(NOARGS)
 132 {
 133         char buf[256];
 134         char *short_yes = _("yY");
 135
 136         fflush(stdout);
 137         fflush(stderr);
 138         printf(_("Proceed anyway? (y,n) "));
 139         buf[0] = 0;
 140         fgets(buf, sizeof(buf), stdin);
 141         if (strchr(short_yes, buf[0]) == 0)
 142                 exit(1);
 143 }
 144
 145 #ifndef SCSI_BLK_MAJOR
 146 #define SCSI_BLK_MAJOR(M)  ((M) == SCSI_DISK_MAJOR || (M) == SCSI_CDROM_MAJOR)
 147 #endif
 148
 149 static void check_plausibility(const char *device)
 150 {
 151 #ifdef HAVE_LINUX_MAJOR_H
 152 #ifndef MAJOR
 153 #define MAJOR(dev)      ((dev)>>8)
 154 #define MINOR(dev)      ((dev) & 0xff)
 155 #endif
 156
 157         int val;
 158         struct stat s;
 159
 160         val = stat(device, &s);
 161
 162         if(val == -1) {
 163                 fprintf(stderr, _("Could not stat %s --- %s\n"),
 164                         device, error_message(errno));
 165                 if (errno == ENOENT)
 166                         fprintf(stderr, _("\nThe device apparently does "
 167                                "not exist; did you specify it correctly?\n"));
 168                 exit(1);
 169         }
 170         if(!S_ISBLK(s.st_mode)) {
 171                 printf(_("%s is not a block special device.\n"), device);
 172                 proceed_question();
 173                 return;
 174         } else if ((MAJOR(s.st_rdev) == HD_MAJOR &&
 175                     MINOR(s.st_rdev)%64 == 0) ||
 176                    (SCSI_BLK_MAJOR(MAJOR(s.st_rdev)) &&
 177                        MINOR(s.st_rdev)%16 == 0)) {
 178                 printf(_("%s is entire device, not just one partition!\n"),
 179                        device);
 180                 proceed_question();
 181         }
 182 #endif
 183 }
 184
 185 static void check_mount(const char *device)
 186 {
 187         errcode_t       retval;
 188         int             mount_flags;
 189
 190         retval = ext2fs_check_if_mounted(device, &mount_flags);
 191         if (retval) {
 192                 com_err("ext2fs_check_if_mount", retval,
 193                         _("while determining whether %s is mounted."),
 194                         device);
 195                 return;
 196         }
 197         if (!(mount_flags & EXT2_MF_MOUNTED))
 198                 return;
 199
 200         fprintf(stderr, _("%s is mounted; "), device);
 201         if (force) {
 202                 fprintf(stderr, _("mke2fs forced anyway.  "
 203                         "Hope /etc/mtab is incorrect.\n"));
 204         } else {
 205                 fprintf(stderr, _("will not make a filesystem here!\n"));
 206                 exit(1);
 207         }
 208 }
 209
 210 /*
 211  * This function sets the default parameters for a filesystem
 212  *
 213  * The type is specified by the user.  The size is the maximum size
 214  * (in megabytes) for which a set of parameters applies, with a size
 215  * of zero meaning that it is the default parameter for the type.
 216  * Note that order is important in the table below.
 217  */
 218 static char default_str[] = "default";
 219 struct mke2fs_defaults {
 220         const char      *type;
 221         int             size;
 222         int             blocksize;
 223         int             inode_ratio;
 224 } settings[] = {
 225         { default_str, 0, 4096, 8192 },
 226         { default_str, 512, 1024, 4096 },
 227         { default_str, 3, 1024, 8192 },
 228         { "news", 0, 4096, 4096 },
 229         { 0, 0, 0, 0},
 230 };
 231
 232 static void set_fs_defaults(char *fs_type, struct ext2fs_sb *super,
 233                             int blocksize, int *inode_ratio)
 234 {
 235         int     megs;
 236         int     ratio = 0;
 237         struct mke2fs_defaults *p;
 238
 239         megs = (super->s_blocks_count * (EXT2_BLOCK_SIZE(super) / 1024) /
 240                 1024);
 241         if (inode_ratio)
 242                 ratio = *inode_ratio;
 243         if (!fs_type)
 244                 fs_type = default_str;
 245         for (p = settings; p->type; p++) {
 246                 if ((strcmp(p->type, fs_type) != 0) &&
 247                     (strcmp(p->type, default_str) != 0))
 248                         continue;
 249                 if ((p->size != 0) &&
 250                     (megs > p->size))
 251                         continue;
 252                 if (ratio == 0)
 253                         *inode_ratio = p->inode_ratio;
 254                 if (blocksize == 0) {
 255                         super->s_log_frag_size = super->s_log_block_size =
 256                                 int_log2(p->blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
 257                 }
 258         }
 259         if (blocksize == 0)
 260                 super->s_blocks_count /= EXT2_BLOCK_SIZE(super) / 1024;
 261 }
 262
 263 /*
 264  * Helper function for read_bb_file and test_disk
 265  */
 266 static void invalid_block(ext2_filsys fs, blk_t blk)
 267 {
 268         printf(_("Bad block %u out of range; ignored.\n"), blk);
 269         return;
 270 }
 271
 272 /*
 273  * Reads the bad blocks list from a file
 274  */
 275 static void read_bb_file(ext2_filsys fs, badblocks_list *bb_list,
 276                          const char *bad_blocks_file)
 277 {
 278         FILE            *f;
 279         errcode_t       retval;
 280
 281         f = fopen(bad_blocks_file, "r");
 282         if (!f) {
 283                 com_err("read_bad_blocks_file", errno,
 284                         _("while trying to open %s"), bad_blocks_file);
 285                 exit(1);
 286         }
 287         retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
 288         fclose (f);
 289         if (retval) {
 290                 com_err("ext2fs_read_bb_FILE", retval,
 291                         _("while reading in list of bad blocks from file"));
 292                 exit(1);
 293         }
 294 }
 295
 296 /*
 297  * Runs the badblocks program to test the disk
 298  */
 299 static void test_disk(ext2_filsys fs, badblocks_list *bb_list)
 300 {
 301         FILE            *f;
 302         errcode_t       retval;
 303         char            buf[1024];
 304
 305         sprintf(buf, "badblocks -b %d %s%s %d", fs->blocksize,
 306                 quiet ? "" : "-s ", fs->device_name,
 307                 fs->super->s_blocks_count);
 308         if (verbose)
 309                 printf(_("Running command: %s\n"), buf);
 310         f = popen(buf, "r");
 311         if (!f) {
 312                 com_err("popen", errno,
 313                         _("while trying run '%s'"), buf);
 314                 exit(1);
 315         }
 316         retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
 317         pclose(f);
 318         if (retval) {
 319                 com_err("ext2fs_read_bb_FILE", retval,
 320                         _("while processing list of bad blocks from program"));
 321                 exit(1);
 322         }
 323 }
 324
 325 static void handle_bad_blocks(ext2_filsys fs, badblocks_list bb_list)
 326 {
 327         int                     i, j;
 328         int                     must_be_good;
 329         blk_t                   blk;
 330         badblocks_iterate       bb_iter;
 331         errcode_t               retval;
 332         blk_t                   group_block;
 333         int                     group;
 334         int                     group_bad;
 335
 336         if (!bb_list)
 337                 return;
 338
 339         /*
 340          * The primary superblock and group descriptors *must* be
 341          * good; if not, abort.
 342          */
 343         must_be_good = fs->super->s_first_data_block + 1 + fs->desc_blocks;
 344         for (i = fs->super->s_first_data_block; i <= must_be_good; i++) {
 345                 if (badblocks_list_test(bb_list, i)) {
 346                         fprintf(stderr, _("Block %d in primary "
 347                                 "superblock/group descriptor area bad.\n"), i);
 348                         fprintf(stderr, _("Blocks %d through %d must be good "
 349                                 "in order to build a filesystem.\n"),
 350                                 fs->super->s_first_data_block, must_be_good);
 351                         fprintf(stderr, _("Aborting....\n"));
 352                         exit(1);
 353                 }
 354         }
 355
 356         /*
 357          * See if any of the bad blocks are showing up in the backup
 358          * superblocks and/or group descriptors.  If so, issue a
 359          * warning and adjust the block counts appropriately.
 360          */
 361         group_block = fs->super->s_first_data_block +
 362                 fs->super->s_blocks_per_group;
 363
 364         for (i = 1; i < fs->group_desc_count; i++) {
 365                 group_bad = 0;
 366                 for (j=0; j < fs->desc_blocks+1; j++) {
 367                         if (badblocks_list_test(bb_list, group_block +
 368                                                 j)) {
 369                                 if (!group_bad)
 370                                         fprintf(stderr,
 371 _("Warning: the backup superblock/group descriptors at block %d contain\n"
 372 "       bad blocks.\n\n"),
 373                                                 group_block);
 374                                 group_bad++;
 375                                 group = ext2fs_group_of_blk(fs, group_block+j);
 376                                 fs->group_desc[group].bg_free_blocks_count++;
 377                                 fs->super->s_free_blocks_count++;
 378                         }
 379                 }
 380                 group_block += fs->super->s_blocks_per_group;
 381         }
 382
 383         /*
 384          * Mark all the bad blocks as used...
 385          */
 386         retval = badblocks_list_iterate_begin(bb_list, &bb_iter);
 387         if (retval) {
 388                 com_err("badblocks_list_iterate_begin", retval,
 389                         _("while marking bad blocks as used"));
 390                 exit(1);
 391         }
 392         while (badblocks_list_iterate(bb_iter, &blk))
 393                 ext2fs_mark_block_bitmap(fs->block_map, blk);
 394         badblocks_list_iterate_end(bb_iter);
 395 }
 396
 397 static void write_inode_tables(ext2_filsys fs)
 398 {
 399         errcode_t       retval;
 400         blk_t           blk;
 401         int             i, j, num, count;
 402         char            *buf;
 403         char            format[20], backup[80];
 404         int             sync_kludge = 0;
 405         char            *mke2fs_sync;
 406
 407         mke2fs_sync = getenv("MKE2FS_SYNC");
 408         if (mke2fs_sync)
 409                 sync_kludge = atoi(mke2fs_sync);
 410
 411         buf = malloc(fs->blocksize * STRIDE_LENGTH);
 412         if (!buf) {
 413                 com_err("malloc", ENOMEM,
 414                         _("while allocating zeroizing buffer"));
 415                 exit(1);
 416         }
 417         memset(buf, 0, fs->blocksize * STRIDE_LENGTH);
 418
 419         /*
 420          * Figure out how many digits we need
 421          */
 422         i = int_log10(fs->group_desc_count);
 423         sprintf(format, "%%%dd/%%%dld", i, i);
 424         memset(backup, '\b', sizeof(backup)-1);
 425         backup[sizeof(backup)-1] = 0;
 426         if ((2*i)+1 < sizeof(backup))
 427                 backup[(2*i)+1] = 0;
 428
 429         if (!quiet)
 430                 printf(_("Writing inode tables: "));
 431         for (i = 0; i < fs->group_desc_count; i++) {
 432                 if (!quiet)
 433                         printf(format, i, fs->group_desc_count);
 434
 435                 blk = fs->group_desc[i].bg_inode_table;
 436                 num = fs->inode_blocks_per_group;
 437
 438                 for (j=0; j < num; j += STRIDE_LENGTH, blk += STRIDE_LENGTH) {
 439                         if (num-j > STRIDE_LENGTH)
 440                                 count = STRIDE_LENGTH;
 441                         else
 442                                 count = num - j;
 443                         retval = io_channel_write_blk(fs->io, blk, count, buf);
 444                         if (retval)
 445                                 printf(_("Warning: could not write %d blocks "
 446                                        "in inode table starting at %d: %s\n"),
 447                                        count, blk, error_message(retval));
 448                 }
 449                 if (!quiet)
 450                         fputs(backup, stdout);
 451                 if (sync_kludge) {
 452                         if (sync_kludge == 1)
 453                                 sync();
 454                         else if ((i % sync_kludge) == 0)
 455                                 sync();
 456                 }
 457         }
 458         free(buf);
 459         if (!quiet)
 460                 fputs(_("done                            \n"), stdout);
 461 }
 462
 463 static void create_root_dir(ext2_filsys fs)
 464 {
 465         errcode_t       retval;
 466         struct ext2_inode       inode;
 467
 468         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0);
 469         if (retval) {
 470                 com_err("ext2fs_mkdir", retval, _("while creating root dir"));
 471                 exit(1);
 472         }
 473         if (geteuid()) {
 474                 retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode);
 475                 if (retval) {
 476                         com_err("ext2fs_read_inode", retval,
 477                                 _("while reading root inode"));
 478                         exit(1);
 479                 }
 480                 inode.i_uid = getuid();
 481                 if (inode.i_uid)
 482                         inode.i_gid = getgid();
 483                 retval = ext2fs_write_inode(fs, EXT2_ROOT_INO, &inode);
 484                 if (retval) {
 485                         com_err("ext2fs_write_inode", retval,
 486                                 _("while setting root inode ownership"));
 487                         exit(1);
 488                 }
 489         }
 490 }
 491
 492 static void create_lost_and_found(ext2_filsys fs)
 493 {
 494         errcode_t               retval;
 495         ino_t                   ino;
 496         const char              *name = "lost+found";
 497         int                     i;
 498         int                     lpf_size = 0;
 499
 500         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name);
 501         if (retval) {
 502                 com_err("ext2fs_mkdir", retval,
 503                         _("while creating /lost+found"));
 504                 exit(1);
 505         }
 506
 507         retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino);
 508         if (retval) {
 509                 com_err("ext2_lookup", retval,
 510                         _("while looking up /lost+found"));
 511                 exit(1);
 512         }
 513
 514         for (i=1; i < EXT2_NDIR_BLOCKS; i++) {
 515                 if ((lpf_size += fs->blocksize) >= 16*1024)
 516                         break;
 517                 retval = ext2fs_expand_dir(fs, ino);
 518                 if (retval) {
 519                         com_err("ext2fs_expand_dir", retval,
 520                                 _("while expanding /lost+found"));
 521                         exit(1);
 522                 }
 523         }
 524 }
 525
 526 static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list)
 527 {
 528         errcode_t       retval;
 529
 530         ext2fs_mark_inode_bitmap(fs->inode_map, EXT2_BAD_INO);
 531         fs->group_desc[0].bg_free_inodes_count--;
 532         fs->super->s_free_inodes_count--;
 533         retval = ext2fs_update_bb_inode(fs, bb_list);
 534         if (retval) {
 535                 com_err("ext2fs_update_bb_inode", retval,
 536                         _("while setting bad block inode"));
 537                 exit(1);
 538         }
 539
 540 }
 541
 542 static void reserve_inodes(ext2_filsys fs)
 543 {
 544         ino_t   i;
 545         int     group;
 546
 547         for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++) {
 548                 ext2fs_mark_inode_bitmap(fs->inode_map, i);
 549                 group = ext2fs_group_of_ino(fs, i);
 550                 fs->group_desc[group].bg_free_inodes_count--;
 551                 fs->super->s_free_inodes_count--;
 552         }
 553         ext2fs_mark_ib_dirty(fs);
 554 }
 555
 556 static void zap_sector(ext2_filsys fs, int sect)
 557 {
 558         char buf[512];
 559         int retval;
 560
 561         memset(buf, 0, 512);
 562
 563         io_channel_set_blksize(fs->io, 512);
 564         retval = io_channel_write_blk(fs->io, sect, -512, buf);
 565         io_channel_set_blksize(fs->io, fs->blocksize);
 566         if (retval)
 567                 printf(_("Warning: could not erase sector %d: %s\n"), sect,
 568                        error_message(retval));
 569 }
 570
 571
 572 static void show_stats(ext2_filsys fs)
 573 {
 574         struct ext2fs_sb        *s = (struct ext2fs_sb *) fs->super;
 575         char                    buf[80];
 576         blk_t                   group_block;
 577         int                     i, need, col_left;
 578
 579         if (param.s_blocks_count != s->s_blocks_count)
 580                 printf(_("warning: %d blocks unused.\n\n"),
 581                        param.s_blocks_count - s->s_blocks_count);
 582
 583         memset(buf, 0, sizeof(buf));
 584         strncpy(buf, s->s_volume_name, sizeof(s->s_volume_name));
 585         printf(_("Filesystem label=%s\n"), buf);
 586         printf(_("OS type: "));
 587         switch (fs->super->s_creator_os) {
 588             case EXT2_OS_LINUX: printf ("Linux"); break;
 589             case EXT2_OS_HURD:  printf ("GNU/Hurd");   break;
 590             case EXT2_OS_MASIX: printf ("Masix"); break;
 591             default:            printf (_("(unknown os)"));
 592         }
 593         printf("\n");
 594         printf(_("Block size=%u (log=%u)\n"), fs->blocksize,
 595                 s->s_log_block_size);
 596         printf(_("Fragment size=%u (log=%u)\n"), fs->fragsize,
 597                 s->s_log_frag_size);
 598         printf(_("%u inodes, %u blocks\n"), s->s_inodes_count,
 599                s->s_blocks_count);
 600         printf(_("%u blocks (%2.2f%%) reserved for the super user\n"),
 601                 s->s_r_blocks_count,
 602                100.0 * s->s_r_blocks_count / s->s_blocks_count);
 603         printf(_("First data block=%u\n"), s->s_first_data_block);
 604         if (fs->group_desc_count > 1)
 605                 printf(_("%lu block groups\n"), fs->group_desc_count);
 606         else
 607                 printf(_("%lu block group\n"), fs->group_desc_count);
 608         printf(_("%u blocks per group, %u fragments per group\n"),
 609                s->s_blocks_per_group, s->s_frags_per_group);
 610         printf(_("%u inodes per group\n"), s->s_inodes_per_group);
 611
 612         if (fs->group_desc_count == 1) {
 613                 printf("\n");
 614                 return;
 615         }
 616
 617         printf(_("Superblock backups stored on blocks: "));
 618         group_block = s->s_first_data_block;
 619         col_left = 0;
 620         for (i = 1; i < fs->group_desc_count; i++) {
 621                 group_block += s->s_blocks_per_group;
 622                 if (!ext2fs_bg_has_super(fs, i))
 623                         continue;
 624                 if (i != 1)
 625                         printf(", ");
 626                 need = int_log10(group_block) + 2;
 627                 if (need > col_left) {
 628                         printf("\n\t");
 629                         col_left = 72;
 630                 }
 631                 col_left -= need;
 632                 printf("%u", group_block);
 633         }
 634         printf("\n\n");
 635 }
 636
 637 #ifndef HAVE_STRCASECMP
 638 static int strcasecmp (char *s1, char *s2)
 639 {
 640         while (*s1 && *s2) {
 641                 int ch1 = *s1++, ch2 = *s2++;
 642                 if (isupper (ch1))
 643                         ch1 = tolower (ch1);
 644                 if (isupper (ch2))
 645                         ch2 = tolower (ch2);
 646                 if (ch1 != ch2)
 647                         return ch1 - ch2;
 648         }
 649         return *s1 ? 1 : *s2 ? -1 : 0;
 650 }
 651 #endif
 652
 653 /*
 654  * Set the S_CREATOR_OS field.  Return true if OS is known,
 655  * otherwise, 0.
 656  */
 657 static int set_os(struct ext2_super_block *sb, char *os)
 658 {
 659         if (isdigit (*os))
 660                 sb->s_creator_os = atoi (os);
 661         else if (strcasecmp(os, "linux") == 0)
 662                 sb->s_creator_os = EXT2_OS_LINUX;
 663         else if (strcasecmp(os, "GNU") == 0 || strcasecmp(os, "hurd") == 0)
 664                 sb->s_creator_os = EXT2_OS_HURD;
 665         else if (strcasecmp(os, "masix") == 0)
 666                 sb->s_creator_os = EXT2_OS_MASIX;
 667         else
 668                 return 0;
 669         return 1;
 670 }
 671
 672 #define PATH_SET "PATH=/sbin"
 673
 674 static void parse_raid_opts(const char *opts)
 675 {
 676         char    *buf, *token, *next, *p, *arg;
 677         int     len;
 678         int     raid_usage = 0;
 679
 680         len = strlen(opts);
 681         buf = malloc(len+1);
 682         if (!buf) {
 683                 fprintf(stderr, _("Couldn't allocate memory to parse "
 684                         "raid options!\n"));
 685                 exit(1);
 686         }
 687         strcpy(buf, opts);
 688         for (token = buf; token && *token; token = next) {
 689                 p = strchr(token, ',');
 690                 next = 0;
 691                 if (p) {
 692                         *p = 0;
 693                         next = p+1;
 694                 }
 695                 arg = strchr(token, '=');
 696                 if (arg) {
 697                         *arg = 0;
 698                         arg++;
 699                 }
 700                 if (strcmp(token, "stride") == 0) {
 701                         if (!arg) {
 702                                 raid_usage++;
 703                                 continue;
 704                         }
 705                         fs_stride = strtoul(arg, &p, 0);
 706                         if (*p || (fs_stride == 0)) {
 707                                 fprintf(stderr,
 708                                         _("Invalid stride parameter.\n"));
 709                                 raid_usage++;
 710                                 continue;
 711                         }
 712                 } else
 713                         raid_usage++;
 714         }
 715         if (raid_usage) {
 716                 fprintf(stderr, _("\nBad raid options specified.\n\n"
 717                         "Raid options are separated by commas, "
 718                         "and may take an argument which\n"
 719                         "\tis set off by an equals ('=') sign.\n\n"
 720                         "Valid raid options are:\n"
 721                         "\tstride=<stride length in blocks>\n\n"));
 722                 exit(1);
 723         }
 724 }
 725
 726 static void parse_journal_opts(const char *opts)
 727 {
 728         char    *buf, *token, *next, *p, *arg;
 729         int     len;
 730         int     journal_usage = 0;
 731
 732         len = strlen(opts);
 733         buf = malloc(len+1);
 734         if (!buf) {
 735                 fprintf(stderr, _("Couldn't allocate memory to parse "
 736                         "journal options!\n"));
 737                 exit(1);
 738         }
 739         strcpy(buf, opts);
 740         for (token = buf; token && *token; token = next) {
 741                 p = strchr(token, ',');
 742                 next = 0;
 743                 if (p) {
 744                         *p = 0;
 745                         next = p+1;
 746                 }
 747                 arg = strchr(token, '=');
 748                 if (arg) {
 749                         *arg = 0;
 750                         arg++;
 751                 }
 752                 printf("Journal option=%s, argument=%s\n", token,
 753                        arg ? arg : "NONE");
 754                 if (strcmp(token, "device") == 0) {
 755                         if (!arg) {
 756                                 journal_usage++;
 757                                 continue;
 758                         }
 759                         journal_device = arg;
 760                 } else if (strcmp(token, "size") == 0) {
 761                         if (!arg) {
 762                                 journal_usage++;
 763                                 continue;
 764                         }
 765                         journal_size = strtoul(arg, &p, 0);
 766                 journal_size_check:
 767                         if (*p || (journal_size < 4 || journal_size > 100)) {
 768                                 fprintf(stderr,
 769                                 _("Invalid journal size parameter - %s.\n"),
 770                                         arg);
 771                                 journal_usage++;
 772                                 continue;
 773                         }
 774                 } else if (strcmp(token, "v1_superblock") == 0) {
 775                         journal_flags |= EXT2_MKJOURNAL_V1_SUPER;
 776                         continue;
 777                 } else {
 778                         journal_size = strtoul(token, &p, 0);
 779                         if (*p)
 780                                 journal_usage++;
 781                         else
 782                                 goto journal_size_check;
 783                 }
 784         }
 785         if (journal_usage) {
 786                 fprintf(stderr, _("\nBad journal options specified.\n\n"
 787                         "Journal options are separated by commas, "
 788                         "and may take an argument which\n"
 789                         "\tis set off by an equals ('=') sign.\n\n"
 790                         "Valid raid options are:\n"
 791                         "\tsize=<journal size in megabytes>\n"
 792                         "\tdevice=<journal device>\n\n"
 793                         "Journal size must be between "
 794                         "4 and 100 megabytes.\n\n" ));
 795                 exit(1);
 796         }
 797 }
 798
 799 static __u32 ok_features[3] = {
 800         0,                                      /* Compat */
 801         EXT2_FEATURE_INCOMPAT_FILETYPE,         /* Incompat */
 802         EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER     /* R/O compat */
 803 };
 804
 805
 806 static void PRS(int argc, char *argv[])
 807 {
 808         int             c;
 809         int             size;
 810         char *          tmp;
 811         blk_t           group_blk_max = 8192;
 812         int             blocksize = 0;
 813         int             inode_ratio = 0;
 814         int             reserved_ratio = 5;
 815         ino_t           num_inodes = 0;
 816         errcode_t       retval;
 817         int             sparse_option = 1;
 818         char *          oldpath = getenv("PATH");
 819         struct ext2fs_sb *param_ext2 = (struct ext2fs_sb *) &param;
 820         char *          raid_opts = 0;
 821         char *          journal_opts = 0;
 822         char *          fs_type = 0;
 823         const char *    feature_set = "filetype";
 824         blk_t           dev_size;
 825 #ifdef linux
 826         struct          utsname ut;
 827
 828         if (uname(&ut)) {
 829                 perror("uname");
 830                 exit(1);
 831         }
 832         if ((ut.release[0] == '1') ||
 833             (ut.release[0] == '2' && ut.release[1] == '.' &&
 834              ut.release[2] < '2' && ut.release[3] == '.'))
 835                 feature_set = NULL;
 836 #endif
 837         /* Update our PATH to include /sbin  */
 838         if (oldpath) {
 839                 char *newpath;
 840
 841                 newpath = malloc(sizeof (PATH_SET) + 1 + strlen (oldpath));
 842                 strcpy (newpath, PATH_SET);
 843                 strcat (newpath, ":");
 844                 strcat (newpath, oldpath);
 845                 putenv (newpath);
 846         } else
 847                 putenv (PATH_SET);
 848
 849         setbuf(stdout, NULL);
 850         setbuf(stderr, NULL);
 851         initialize_ext2_error_table();
 852         memset(&param, 0, sizeof(struct ext2_super_block));
 853         param.s_rev_level = 1;  /* Create revision 1 filesystems now */
 854
 855         fprintf (stderr, _("mke2fs %s, %s for EXT2 FS %s, %s\n"),
 856                  E2FSPROGS_VERSION, E2FSPROGS_DATE,
 857                  EXT2FS_VERSION, EXT2FS_DATE);
 858         if (argc && *argv)
 859                 program_name = *argv;
 860         while ((c = getopt (argc, argv,
 861                     "b:cf:g:i:j:l:m:no:qr:R:s:tvI:ST:FL:M:N:O:V")) != EOF)
 862                 switch (c) {
 863                 case 'b':
 864                         blocksize = strtoul(optarg, &tmp, 0);
 865                         if (blocksize < 1024 || blocksize > 4096 || *tmp) {
 866                                 com_err(program_name, 0,
 867                                         _("bad block size - %s"), optarg);
 868                                 exit(1);
 869                         }
 870                         param.s_log_block_size =
 871                                 int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
 872                         group_blk_max = blocksize * 8;
 873                         break;
 874                 case 'c':
 875                 case 't':       /* Check for bad blocks */
 876                         cflag = 1;
 877                         break;
 878                 case 'f':
 879                         size = strtoul(optarg, &tmp, 0);
 880                         if (size < 1024 || size > 4096 || *tmp) {
 881                                 com_err(program_name, 0,
 882                                         _("bad fragment size - %s"),
 883                                         optarg);
 884                                 exit(1);
 885                         }
 886                         param.s_log_frag_size =
 887                                 int_log2(size >> EXT2_MIN_BLOCK_LOG_SIZE);
 888                         printf(_("Warning: fragments not supported.  "
 889                                "Ignoring -f option\n"));
 890                         break;
 891                 case 'g':
 892                         param.s_blocks_per_group = strtoul(optarg, &tmp, 0);
 893                         if (*tmp) {
 894                                 com_err(program_name, 0,
 895                                         _("Illegal number for blocks per group"));
 896                                 exit(1);
 897                         }
 898                         if ((param.s_blocks_per_group % 8) != 0) {
 899                                 com_err(program_name, 0,
 900                                 _("blocks per group must be multiple of 8"));
 901                                 exit(1);
 902                         }
 903                         break;
 904                 case 'i':
 905                         inode_ratio = strtoul(optarg, &tmp, 0);
 906                         if (inode_ratio < 1024 || inode_ratio > 256 * 1024 ||
 907                             *tmp) {
 908                                 com_err(program_name, 0,
 909                                         _("bad inode ratio - %s"), optarg);
 910                                 exit(1);
 911                         }
 912                         break;
 913                 case 'j':
 914                         journal_opts = optarg;
 915                         break;
 916                 case 'l':
 917                         bad_blocks_filename = malloc(strlen(optarg)+1);
 918                         if (!bad_blocks_filename) {
 919                                 com_err(program_name, ENOMEM,
 920                                         _("in malloc for bad_blocks_filename"));
 921                                 exit(1);
 922                         }
 923                         strcpy(bad_blocks_filename, optarg);
 924                         break;
 925                 case 'm':
 926                         reserved_ratio = strtoul(optarg, &tmp, 0);
 927                         if (reserved_ratio > 50 || *tmp) {
 928                                 com_err(program_name, 0,
 929                                         _("bad reserved blocks percent - %s"),
 930                                         optarg);
 931                                 exit(1);
 932                         }
 933                         break;
 934                 case 'n':
 935                         noaction++;
 936                         break;
 937                 case 'o':
 938                         creator_os = optarg;
 939                         break;
 940                 case 'r':
 941                         param.s_rev_level = atoi(optarg);
 942                         break;
 943                 case 's':
 944                         sparse_option = atoi(optarg);
 945                         break;
 946 #ifdef EXT2_DYNAMIC_REV
 947                 case 'I':
 948                         param.s_inode_size = atoi(optarg);
 949                         break;
 950 #endif
 951                 case 'N':
 952                         num_inodes = atoi(optarg);
 953                         break;
 954                 case 'v':
 955                         verbose = 1;
 956                         break;
 957                 case 'q':
 958                         quiet = 1;
 959                         break;
 960                 case 'F':
 961                         force = 1;
 962                         break;
 963                 case 'L':
 964                         volume_label = optarg;
 965                         break;
 966                 case 'M':
 967                         mount_dir = optarg;
 968                         break;
 969                 case 'O':
 970                         feature_set = optarg;
 971                         break;
 972                 case 'R':
 973                         raid_opts = optarg;
 974                         break;
 975                 case 'S':
 976                         super_only = 1;
 977                         break;
 978                 case 'T':
 979                         fs_type = optarg;
 980                         break;
 981                 case 'V':
 982                         /* Print version number and exit */
 983                         fprintf(stderr, _("\tUsing %s\n"),
 984                                 error_message(EXT2_ET_BASE));
 985                         exit(0);
 986                 default:
 987                         usage();
 988                 }
 989         if (optind == argc)
 990                 usage();
 991         device_name = argv[optind];
 992         optind++;
 993         if (optind < argc) {
 994                 unsigned long tmp2  = strtoul(argv[optind++], &tmp, 0);
 995
 996                 if ((*tmp) || (tmp2 > 0xfffffffful)) {
 997                         com_err(program_name, 0, _("bad blocks count - %s"),
 998                                 argv[optind - 1]);
 999                         exit(1);
1000                 }
1001                 param.s_blocks_count = tmp2;
1002         }
1003         if (optind < argc)
1004                 usage();
1005
1006         if (raid_opts)
1007                 parse_raid_opts(raid_opts);
1008
1009         if (journal_opts)
1010                 parse_journal_opts(journal_opts);
1011
1012         if (!force)
1013                 check_plausibility(device_name);
1014         check_mount(device_name);
1015
1016         param.s_log_frag_size = param.s_log_block_size;
1017
1018         if (noaction && param.s_blocks_count) {
1019                 dev_size = param.s_blocks_count;
1020                 retval = 0;
1021         } else
1022                 retval = ext2fs_get_device_size(device_name,
1023                                                 EXT2_BLOCK_SIZE(&param),
1024                                                 &dev_size);
1025         if (retval && (retval != EXT2_ET_UNIMPLEMENTED)) {
1026                 com_err(program_name, retval,
1027                         _("while trying to determine filesystem size"));
1028                 exit(1);
1029         }
1030         if (!param.s_blocks_count) {
1031                 if (retval == EXT2_ET_UNIMPLEMENTED) {
1032                         com_err(program_name, 0,
1033                                 _("Couldn't determine device size; you "
1034                                 "must specify\nthe size of the "
1035                                 "filesystem\n"));
1036                         exit(1);
1037                 } else {
1038                         if (dev_size == 0) {
1039                                 com_err(program_name, 0,
1040                                 _("Device size reported to be zero.  "
1041                                   "Invalid partition specified, or\n\t"
1042                                   "partition table wasn't reread "
1043                                   "after running fdisk, due to\n\t"
1044                                   "a modified partition being busy "
1045                                   "and in use.  You may need to reboot\n\t"
1046                                   "to re-read your partition table.\n"
1047                                   ));
1048                                 exit(1);
1049                         }
1050                         param.s_blocks_count = dev_size;
1051                 }
1052
1053         } else if (!force && (param.s_blocks_count > dev_size)) {
1054                 com_err(program_name, 0,
1055                         _("Filesystem larger than apparent filesystem size."));
1056                 proceed_question();
1057         }
1058
1059         set_fs_defaults(fs_type, param_ext2, blocksize, &inode_ratio);
1060
1061         if (param.s_blocks_per_group) {
1062                 if (param.s_blocks_per_group < 256 ||
1063                     param.s_blocks_per_group > group_blk_max || *tmp) {
1064                         com_err(program_name, 0,
1065                                 _("blocks per group count out of range"));
1066                         exit(1);
1067                 }
1068         }
1069
1070         /*
1071          * Calculate number of inodes based on the inode ratio
1072          */
1073         param.s_inodes_count = num_inodes ? num_inodes :
1074                 ((__u64) param.s_blocks_count * EXT2_BLOCK_SIZE(&param))
1075                         / inode_ratio;
1076
1077         /*
1078          * Calculate number of blocks to reserve
1079          */
1080         param.s_r_blocks_count = (param.s_blocks_count * reserved_ratio) / 100;
1081
1082         /* Turn off features not supported by the earlier filesystem version */
1083         if (param.s_rev_level == 0) {
1084                 sparse_option = 0;
1085                 feature_set = NULL;
1086         }
1087         if (sparse_option)
1088                 param_ext2->s_feature_ro_compat |=
1089                         EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
1090
1091         if (feature_set && !strncasecmp(feature_set, "none", 4))
1092                 feature_set = NULL;
1093         if (feature_set && e2p_edit_feature(feature_set,
1094                                             &param_ext2->s_feature_compat,
1095                                             ok_features)) {
1096                 fprintf(stderr, _("Invalid filesystem option set: %s\n"),
1097                         feature_set);
1098                 exit(1);
1099         }
1100 }
1101
1102 int main (int argc, char *argv[])
1103 {
1104         errcode_t       retval = 0;
1105         ext2_filsys     fs;
1106         badblocks_list  bb_list = 0;
1107         int             journal_blocks;
1108         struct ext2fs_sb *s;
1109
1110 #ifdef ENABLE_NLS
1111         setlocale(LC_MESSAGES, "");
1112         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1113         textdomain(NLS_CAT_NAME);
1114 #endif
1115         PRS(argc, argv);
1116
1117         /*
1118          * Initialize the superblock....
1119          */
1120         retval = ext2fs_initialize(device_name, 0, &param,
1121                                    unix_io_manager, &fs);
1122         if (retval) {
1123                 com_err(device_name, retval, _("while setting up superblock"));
1124                 exit(1);
1125         }
1126
1127         /*
1128          * Wipe out the old on-disk superblock
1129          */
1130         zap_sector(fs, 2);
1131
1132         /*
1133          * Generate a UUID for it...
1134          */
1135         s = (struct ext2fs_sb *) fs->super;
1136         uuid_generate(s->s_uuid);
1137
1138         /*
1139          * Override the creator OS, if applicable
1140          */
1141         if (creator_os && !set_os(fs->super, creator_os)) {
1142                 com_err (program_name, 0, _("unknown os - %s"), creator_os);
1143                 exit(1);
1144         }
1145
1146         /*
1147          * For the Hurd, we will turn off filetype since it doesn't
1148          * support it.
1149          */
1150         if (fs->super->s_creator_os == EXT2_OS_HURD)
1151                 fs->super->s_feature_incompat &=
1152                         ~EXT2_FEATURE_INCOMPAT_FILETYPE;
1153
1154         /*
1155          * Set the volume label...
1156          */
1157         if (volume_label) {
1158                 memset(s->s_volume_name, 0, sizeof(s->s_volume_name));
1159                 strncpy(s->s_volume_name, volume_label,
1160                         sizeof(s->s_volume_name));
1161         }
1162
1163         /*
1164          * Set the last mount directory
1165          */
1166         if (mount_dir) {
1167                 memset(s->s_last_mounted, 0, sizeof(s->s_last_mounted));
1168                 strncpy(s->s_last_mounted, mount_dir,
1169                         sizeof(s->s_last_mounted));
1170         }
1171
1172         if (!quiet || noaction)
1173                 show_stats(fs);
1174
1175         if (noaction)
1176                 exit(0);
1177
1178         if (bad_blocks_filename)
1179                 read_bb_file(fs, &bb_list, bad_blocks_filename);
1180         if (cflag)
1181                 test_disk(fs, &bb_list);
1182
1183         handle_bad_blocks(fs, bb_list);
1184         fs->stride = fs_stride;
1185         retval = ext2fs_allocate_tables(fs);
1186         if (retval) {
1187                 com_err(program_name, retval,
1188                         _("while trying to allocate filesystem tables"));
1189                 exit(1);
1190         }
1191         if (super_only) {
1192                 fs->super->s_state |= EXT2_ERROR_FS;
1193                 fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY);
1194         } else {
1195                 write_inode_tables(fs);
1196                 create_root_dir(fs);
1197                 create_lost_and_found(fs);
1198                 reserve_inodes(fs);
1199                 create_bad_block_inode(fs, bb_list);
1200 #ifdef ZAP_BOOTBLOCK
1201                 zap_sector(fs, 0);
1202 #endif
1203         }
1204
1205         journal_blocks = journal_size * 1024 / (fs->blocksize   / 1024);
1206         if (journal_device) {
1207                 if (!force)
1208                         check_plausibility(journal_device);
1209                 check_mount(journal_device);
1210
1211                 if (!quiet)
1212                         printf(_("Creating journal on device %s: "),
1213                                journal_device);
1214                 retval = ext2fs_add_journal_device(fs, journal_device,
1215                                                    journal_blocks,
1216                                                    journal_flags);
1217                 if(retval) {
1218                         com_err (program_name, retval,
1219                                  _("while trying to create journal on device %s"),
1220                                  journal_device);
1221                         exit(1);
1222                 }
1223                 if (!quiet)
1224                         printf(_("done\n"));
1225         } else if (journal_size) {
1226                 if (!quiet)
1227                         printf(_("Creating journal (%d blocks): "),
1228                                journal_blocks);
1229                 retval = ext2fs_add_journal_fs(fs, journal_blocks,
1230                                                journal_flags);
1231                 if (retval) {
1232                         com_err (program_name, retval,
1233                                  _("while trying to create journal"));
1234                         exit(1);
1235                 }
1236                 if (!quiet)
1237                         printf(_("done\n"));
1238         }
1239
1240         if (!quiet)
1241                 printf(_("Writing superblocks and "
1242                        "filesystem accounting information: "));
1243         retval = ext2fs_flush(fs);
1244         if (retval) {
1245                 printf(_("\nWarning, had trouble writing out superblocks."));
1246         }
1247         if (!quiet)
1248                 printf(_("done\n"));
1249         ext2fs_close(fs);
1250         return 0;
1251 }