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