misc/mke2fs.c

   1 /*
   2  * mke2fs.c - Make a ext2fs filesystem.
   3  *
   4  * Copyright (C) 1994, 1995, 1996, 1997 Theodore Ts'o.
   5  *
   6  * %Begin-Header%
   7  * This file may be redistributed under the terms of the GNU Public
   8  * License.
   9  * %End-Header%
  10  */
  11
  12 /* Usage: mke2fs [options] device
  13  *
  14  * The device may be a block device or a image of one, but this isn't
  15  * enforced (but it's not much fun on a character device :-).
  16  */
  17
  18 #include <stdio.h>
  19 #include <string.h>
  20 #include <fcntl.h>
  21 #include <ctype.h>
  22 #include <time.h>
  23 #ifdef linux
  24 #include <sys/utsname.h>
  25 #endif
  26 #ifdef HAVE_GETOPT_H
  27 #include <getopt.h>
  28 #else
  29 extern char *optarg;
  30 extern int optind;
  31 #endif
  32 #ifdef HAVE_UNISTD_H
  33 #include <unistd.h>
  34 #endif
  35 #ifdef HAVE_STDLIB_H
  36 #include <stdlib.h>
  37 #endif
  38 #ifdef HAVE_ERRNO_H
  39 #include <errno.h>
  40 #endif
  41 #ifdef HAVE_MNTENT_H
  42 #include <mntent.h>
  43 #endif
  44 #include <sys/ioctl.h>
  45 #include <sys/types.h>
  46
  47 #include <linux/ext2_fs.h>
  48
  49 #include "et/com_err.h"
  50 #include "uuid/uuid.h"
  51 #include "e2p/e2p.h"
  52 #include "ext2fs/ext2fs.h"
  53 #include "util.h"
  54 #include "../version.h"
  55 #include "nls-enable.h"
  56
  57 #define STRIDE_LENGTH 8
  58
  59 #ifndef __sparc__
  60 #define ZAP_BOOTBLOCK
  61 #endif
  62
  63 extern int isatty(int);
  64 extern FILE *fpopen(const char *cmd, const char *mode);
  65
  66 const char * program_name = "mke2fs";
  67 const char * device_name /* = NULL */;
  68
  69 /* Command line options */
  70 int     cflag;
  71 int     verbose;
  72 int     quiet;
  73 int     super_only;
  74 int     force;
  75 int     noaction;
  76 int     journal_size;
  77 int     journal_flags;
  78 char    *bad_blocks_filename;
  79 __u32   fs_stride;
  80
  81 struct ext2_super_block param;
  82 char *creator_os;
  83 char *volume_label;
  84 char *mount_dir;
  85 char *journal_device;
  86 int sync_kludge;        /* Set using the MKE2FS_SYNC env. option */
  87
  88 static void usage(void)
  89 {
  90         fprintf(stderr, _("Usage: %s [-c|-t|-l filename] [-b block-size] "
  91         "[-f fragment-size]\n\t[-i bytes-per-inode] [-j] [-J journal-options]"
  92         " [-N number-of-inodes]\n\t[-m reserved-blocks-percentage] "
  93         "[-o creator-os] [-g blocks-per-group]\n\t[-L volume-label] "
  94         "[-M last-mounted-directory] [-O feature[,...]]\n\t"
  95         "[-r fs-revision] [-R raid_opts] [-qvSV] device [blocks-count]\n"),
  96                 program_name);
  97         exit(1);
  98 }
  99
 100 static int int_log2(int arg)
 101 {
 102         int     l = 0;
 103
 104         arg >>= 1;
 105         while (arg) {
 106                 l++;
 107                 arg >>= 1;
 108         }
 109         return l;
 110 }
 111
 112 static int int_log10(unsigned int arg)
 113 {
 114         int     l;
 115
 116         for (l=0; arg ; l++)
 117                 arg = arg / 10;
 118         return l;
 119 }
 120
 121 /*
 122  * This function sets the default parameters for a filesystem
 123  *
 124  * The type is specified by the user.  The size is the maximum size
 125  * (in megabytes) for which a set of parameters applies, with a size
 126  * of zero meaning that it is the default parameter for the type.
 127  * Note that order is important in the table below.
 128  */
 129 static char default_str[] = "default";
 130 struct mke2fs_defaults {
 131         const char      *type;
 132         int             size;
 133         int             blocksize;
 134         int             inode_ratio;
 135 } settings[] = {
 136         { default_str, 0, 4096, 8192 },
 137         { default_str, 512, 1024, 4096 },
 138         { default_str, 3, 1024, 8192 },
 139         { "journal", 0, 4096, 8192 },
 140         { "news", 0, 4096, 4096 },
 141         { "largefile", 0, 4096, 1024 * 1024 },
 142         { "largefile4", 0, 4096, 4096 * 1024 },
 143         { 0, 0, 0, 0},
 144 };
 145
 146 static void set_fs_defaults(char *fs_type, struct ext2_super_block *super,
 147                             int blocksize, int *inode_ratio)
 148 {
 149         int     megs;
 150         int     ratio = 0;
 151         struct mke2fs_defaults *p;
 152
 153         megs = (super->s_blocks_count * (EXT2_BLOCK_SIZE(super) / 1024) /
 154                 1024);
 155         if (inode_ratio)
 156                 ratio = *inode_ratio;
 157         if (!fs_type)
 158                 fs_type = default_str;
 159         for (p = settings; p->type; p++) {
 160                 if ((strcmp(p->type, fs_type) != 0) &&
 161                     (strcmp(p->type, default_str) != 0))
 162                         continue;
 163                 if ((p->size != 0) &&
 164                     (megs > p->size))
 165                         continue;
 166                 if (ratio == 0)
 167                         *inode_ratio = p->inode_ratio;
 168                 if (blocksize == 0) {
 169                         super->s_log_frag_size = super->s_log_block_size =
 170                                 int_log2(p->blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
 171                 }
 172         }
 173         if (blocksize == 0)
 174                 super->s_blocks_count /= EXT2_BLOCK_SIZE(super) / 1024;
 175 }
 176
 177 /*
 178  * Helper function for read_bb_file and test_disk
 179  */
 180 static void invalid_block(ext2_filsys fs, blk_t blk)
 181 {
 182         printf(_("Bad block %u out of range; ignored.\n"), blk);
 183         return;
 184 }
 185
 186 /*
 187  * Reads the bad blocks list from a file
 188  */
 189 static void read_bb_file(ext2_filsys fs, badblocks_list *bb_list,
 190                          const char *bad_blocks_file)
 191 {
 192         FILE            *f;
 193         errcode_t       retval;
 194
 195         f = fopen(bad_blocks_file, "r");
 196         if (!f) {
 197                 com_err("read_bad_blocks_file", errno,
 198                         _("while trying to open %s"), bad_blocks_file);
 199                 exit(1);
 200         }
 201         retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
 202         fclose (f);
 203         if (retval) {
 204                 com_err("ext2fs_read_bb_FILE", retval,
 205                         _("while reading in list of bad blocks from file"));
 206                 exit(1);
 207         }
 208 }
 209
 210 /*
 211  * Runs the badblocks program to test the disk
 212  */
 213 static void test_disk(ext2_filsys fs, badblocks_list *bb_list)
 214 {
 215         FILE            *f;
 216         errcode_t       retval;
 217         char            buf[1024];
 218
 219         sprintf(buf, "badblocks -b %d %s%s %d", fs->blocksize,
 220                 quiet ? "" : "-s ", fs->device_name,
 221                 fs->super->s_blocks_count);
 222         if (verbose)
 223                 printf(_("Running command: %s\n"), buf);
 224         f = popen(buf, "r");
 225         if (!f) {
 226                 com_err("popen", errno,
 227                         _("while trying run '%s'"), buf);
 228                 exit(1);
 229         }
 230         retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
 231         pclose(f);
 232         if (retval) {
 233                 com_err("ext2fs_read_bb_FILE", retval,
 234                         _("while processing list of bad blocks from program"));
 235                 exit(1);
 236         }
 237 }
 238
 239 static void handle_bad_blocks(ext2_filsys fs, badblocks_list bb_list)
 240 {
 241         int                     i, j;
 242         int                     must_be_good;
 243         blk_t                   blk;
 244         badblocks_iterate       bb_iter;
 245         errcode_t               retval;
 246         blk_t                   group_block;
 247         int                     group;
 248         int                     group_bad;
 249
 250         if (!bb_list)
 251                 return;
 252
 253         /*
 254          * The primary superblock and group descriptors *must* be
 255          * good; if not, abort.
 256          */
 257         must_be_good = fs->super->s_first_data_block + 1 + fs->desc_blocks;
 258         for (i = fs->super->s_first_data_block; i <= must_be_good; i++) {
 259                 if (badblocks_list_test(bb_list, i)) {
 260                         fprintf(stderr, _("Block %d in primary "
 261                                 "superblock/group descriptor area bad.\n"), i);
 262                         fprintf(stderr, _("Blocks %d through %d must be good "
 263                                 "in order to build a filesystem.\n"),
 264                                 fs->super->s_first_data_block, must_be_good);
 265                         fprintf(stderr, _("Aborting....\n"));
 266                         exit(1);
 267                 }
 268         }
 269
 270         /*
 271          * See if any of the bad blocks are showing up in the backup
 272          * superblocks and/or group descriptors.  If so, issue a
 273          * warning and adjust the block counts appropriately.
 274          */
 275         group_block = fs->super->s_first_data_block +
 276                 fs->super->s_blocks_per_group;
 277
 278         for (i = 1; i < fs->group_desc_count; i++) {
 279                 group_bad = 0;
 280                 for (j=0; j < fs->desc_blocks+1; j++) {
 281                         if (badblocks_list_test(bb_list, group_block +
 282                                                 j)) {
 283                                 if (!group_bad)
 284                                         fprintf(stderr,
 285 _("Warning: the backup superblock/group descriptors at block %d contain\n"
 286 "       bad blocks.\n\n"),
 287                                                 group_block);
 288                                 group_bad++;
 289                                 group = ext2fs_group_of_blk(fs, group_block+j);
 290                                 fs->group_desc[group].bg_free_blocks_count++;
 291                                 fs->super->s_free_blocks_count++;
 292                         }
 293                 }
 294                 group_block += fs->super->s_blocks_per_group;
 295         }
 296
 297         /*
 298          * Mark all the bad blocks as used...
 299          */
 300         retval = badblocks_list_iterate_begin(bb_list, &bb_iter);
 301         if (retval) {
 302                 com_err("badblocks_list_iterate_begin", retval,
 303                         _("while marking bad blocks as used"));
 304                 exit(1);
 305         }
 306         while (badblocks_list_iterate(bb_iter, &blk))
 307                 ext2fs_mark_block_bitmap(fs->block_map, blk);
 308         badblocks_list_iterate_end(bb_iter);
 309 }
 310
 311 /*
 312  * These functions implement a generalized progress meter.
 313  */
 314 struct progress_struct {
 315         char            format[20];
 316         char            backup[80];
 317         __u32           max;
 318 };
 319
 320 static void progress_init(struct progress_struct *progress,
 321                           char *label,__u32 max)
 322 {
 323         int     i;
 324
 325         memset(progress, 0, sizeof(struct progress_struct));
 326         if (quiet)
 327                 return;
 328
 329         /*
 330          * Figure out how many digits we need
 331          */
 332         i = int_log10(max);
 333         sprintf(progress->format, "%%%dd/%%%dld", i, i);
 334         memset(progress->backup, '\b', sizeof(progress->backup)-1);
 335         progress->backup[sizeof(progress->backup)-1] = 0;
 336         if ((2*i)+1 < sizeof(progress->backup))
 337                 progress->backup[(2*i)+1] = 0;
 338         progress->max = max;
 339
 340         fputs(label, stdout);
 341         fflush(stdout);
 342 }
 343
 344 static void progress_update(struct progress_struct *progress, __u32 val)
 345 {
 346         if (progress->format[0] == 0)
 347                 return;
 348         printf(progress->format, val, progress->max);
 349         fputs(progress->backup, stdout);
 350 }
 351
 352 static void progress_close(struct progress_struct *progress)
 353 {
 354         if (progress->format[0] == 0)
 355                 return;
 356         fputs(_("done                            \n"), stdout);
 357 }
 358
 359
 360 /*
 361  * Helper function which zeros out _num_ blocks starting at _blk_.  In
 362  * case of an error, the details of the error is returned via _ret_blk_
 363  * and _ret_count_ if they are non-NULL pointers.  Returns 0 on
 364  * success, and an error code on an error.
 365  *
 366  * As a special case, if the first argument is NULL, then it will
 367  * attempt to free the static zeroizing buffer.  (This is to keep
 368  * programs that check for memory leaks happy.)
 369  */
 370 static errcode_t zero_blocks(ext2_filsys fs, blk_t blk, int num,
 371                              struct progress_struct *progress,
 372                              blk_t *ret_blk, int *ret_count)
 373 {
 374         int             j, count, next_update, next_update_incr;
 375         static char     *buf;
 376         errcode_t       retval;
 377
 378         /* If fs is null, clean up the static buffer and return */
 379         if (!fs) {
 380                 if (buf) {
 381                         free(buf);
 382                         buf = 0;
 383                 }
 384                 return 0;
 385         }
 386         /* Allocate the zeroizing buffer if necessary */
 387         if (!buf) {
 388                 buf = malloc(fs->blocksize * STRIDE_LENGTH);
 389                 if (!buf) {
 390                         com_err("malloc", ENOMEM,
 391                                 _("while allocating zeroizing buffer"));
 392                         exit(1);
 393                 }
 394                 memset(buf, 0, fs->blocksize * STRIDE_LENGTH);
 395         }
 396         /* OK, do the write loop */
 397         next_update = 0;
 398         next_update_incr = num / 100;
 399         if (next_update_incr < 1)
 400                 next_update_incr = 1;
 401         for (j=0; j < num; j += STRIDE_LENGTH, blk += STRIDE_LENGTH) {
 402                 if (num-j > STRIDE_LENGTH)
 403                         count = STRIDE_LENGTH;
 404                 else
 405                         count = num - j;
 406                 retval = io_channel_write_blk(fs->io, blk, count, buf);
 407                 if (retval) {
 408                         if (ret_count)
 409                                 *ret_count = count;
 410                         if (ret_blk)
 411                                 *ret_blk = blk;
 412                         return retval;
 413                 }
 414                 if (progress && j > next_update) {
 415                         next_update += num / 100;
 416                         progress_update(progress, blk);
 417                 }
 418         }
 419         return 0;
 420 }
 421
 422 static void write_inode_tables(ext2_filsys fs)
 423 {
 424         errcode_t       retval;
 425         blk_t           blk;
 426         int             i, num;
 427         struct progress_struct progress;
 428
 429         if (quiet)
 430                 memset(&progress, 0, sizeof(progress));
 431         else
 432                 progress_init(&progress, _("Writing inode tables: "),
 433                               fs->group_desc_count);
 434
 435         for (i = 0; i < fs->group_desc_count; i++) {
 436                 progress_update(&progress, i);
 437
 438                 blk = fs->group_desc[i].bg_inode_table;
 439                 num = fs->inode_blocks_per_group;
 440
 441                 retval = zero_blocks(fs, blk, num, 0, &blk, &num);
 442                 if (retval) {
 443                         printf(_("\nCould not write %d blocks "
 444                                  "in inode table starting at %d: %s\n"),
 445                                num, blk, error_message(retval));
 446                         exit(1);
 447                 }
 448                 if (sync_kludge) {
 449                         if (sync_kludge == 1)
 450                                 sync();
 451                         else if ((i % sync_kludge) == 0)
 452                                 sync();
 453                 }
 454         }
 455         zero_blocks(0, 0, 0, 0, 0, 0);
 456         progress_close(&progress);
 457 }
 458
 459 static void create_root_dir(ext2_filsys fs)
 460 {
 461         errcode_t       retval;
 462         struct ext2_inode       inode;
 463
 464         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0);
 465         if (retval) {
 466                 com_err("ext2fs_mkdir", retval, _("while creating root dir"));
 467                 exit(1);
 468         }
 469         if (geteuid()) {
 470                 retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode);
 471                 if (retval) {
 472                         com_err("ext2fs_read_inode", retval,
 473                                 _("while reading root inode"));
 474                         exit(1);
 475                 }
 476                 inode.i_uid = getuid();
 477                 if (inode.i_uid)
 478                         inode.i_gid = getgid();
 479                 retval = ext2fs_write_inode(fs, EXT2_ROOT_INO, &inode);
 480                 if (retval) {
 481                         com_err("ext2fs_write_inode", retval,
 482                                 _("while setting root inode ownership"));
 483                         exit(1);
 484                 }
 485         }
 486 }
 487
 488 static void create_lost_and_found(ext2_filsys fs)
 489 {
 490         errcode_t               retval;
 491         ext2_ino_t              ino;
 492         const char              *name = "lost+found";
 493         int                     i;
 494         int                     lpf_size = 0;
 495
 496         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name);
 497         if (retval) {
 498                 com_err("ext2fs_mkdir", retval,
 499                         _("while creating /lost+found"));
 500                 exit(1);
 501         }
 502
 503         retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino);
 504         if (retval) {
 505                 com_err("ext2_lookup", retval,
 506                         _("while looking up /lost+found"));
 507                 exit(1);
 508         }
 509
 510         for (i=1; i < EXT2_NDIR_BLOCKS; i++) {
 511                 if ((lpf_size += fs->blocksize) >= 16*1024)
 512                         break;
 513                 retval = ext2fs_expand_dir(fs, ino);
 514                 if (retval) {
 515                         com_err("ext2fs_expand_dir", retval,
 516                                 _("while expanding /lost+found"));
 517                         exit(1);
 518                 }
 519         }
 520 }
 521
 522 static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list)
 523 {
 524         errcode_t       retval;
 525
 526         ext2fs_mark_inode_bitmap(fs->inode_map, EXT2_BAD_INO);
 527         fs->group_desc[0].bg_free_inodes_count--;
 528         fs->super->s_free_inodes_count--;
 529         retval = ext2fs_update_bb_inode(fs, bb_list);
 530         if (retval) {
 531                 com_err("ext2fs_update_bb_inode", retval,
 532                         _("while setting bad block inode"));
 533                 exit(1);
 534         }
 535
 536 }
 537
 538 static void reserve_inodes(ext2_filsys fs)
 539 {
 540         ext2_ino_t      i;
 541         int             group;
 542
 543         for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++) {
 544                 ext2fs_mark_inode_bitmap(fs->inode_map, i);
 545                 group = ext2fs_group_of_ino(fs, i);
 546                 fs->group_desc[group].bg_free_inodes_count--;
 547                 fs->super->s_free_inodes_count--;
 548         }
 549         ext2fs_mark_ib_dirty(fs);
 550 }
 551
 552 static void zap_sector(ext2_filsys fs, int sect)
 553 {
 554         char buf[512];
 555         int retval;
 556
 557         memset(buf, 0, 512);
 558
 559         io_channel_set_blksize(fs->io, 512);
 560         retval = io_channel_write_blk(fs->io, sect, -512, buf);
 561         io_channel_set_blksize(fs->io, fs->blocksize);
 562         if (retval)
 563                 printf(_("Warning: could not erase sector %d: %s\n"), sect,
 564                        error_message(retval));
 565 }
 566
 567 static void create_journal_dev(ext2_filsys fs)
 568 {
 569         struct progress_struct progress;
 570         errcode_t               retval;
 571         char                    *buf;
 572         blk_t                   blk;
 573         int                     count;
 574
 575         retval = ext2fs_create_journal_superblock(fs,
 576                                   fs->super->s_blocks_count, 0, &buf);
 577         if (retval) {
 578                 com_err("create_journal_dev", retval,
 579                         _("while initializing journal superblock"));
 580                 exit(1);
 581         }
 582         if (quiet)
 583                 memset(&progress, 0, sizeof(progress));
 584         else
 585                 progress_init(&progress, _("Zeroing journal device: "),
 586                               fs->super->s_blocks_count);
 587
 588         retval = zero_blocks(fs, 0, fs->super->s_blocks_count,
 589                              &progress, &blk, &count);
 590         if (retval) {
 591                 com_err("create_journal_dev", retval,
 592                         _("while zeroing journal device (block %u, count %d)"),
 593                         blk, count);
 594                 exit(1);
 595         }
 596         zero_blocks(0, 0, 0, 0, 0, 0);
 597
 598         retval = io_channel_write_blk(fs->io,
 599                                       fs->super->s_first_data_block+1,
 600                                       1, buf);
 601         if (retval) {
 602                 com_err("create_journal_dev", retval,
 603                         _("while writing journal superblock"));
 604                 exit(1);
 605         }
 606         progress_close(&progress);
 607 }
 608
 609 static void show_stats(ext2_filsys fs)
 610 {
 611         struct ext2_super_block *s = fs->super;
 612         char                    buf[80];
 613         blk_t                   group_block;
 614         int                     i, need, col_left;
 615
 616         if (param.s_blocks_count != s->s_blocks_count)
 617                 printf(_("warning: %d blocks unused.\n\n"),
 618                        param.s_blocks_count - s->s_blocks_count);
 619
 620         memset(buf, 0, sizeof(buf));
 621         strncpy(buf, s->s_volume_name, sizeof(s->s_volume_name));
 622         printf(_("Filesystem label=%s\n"), buf);
 623         printf(_("OS type: "));
 624         switch (fs->super->s_creator_os) {
 625             case EXT2_OS_LINUX: printf ("Linux"); break;
 626             case EXT2_OS_HURD:  printf ("GNU/Hurd");   break;
 627             case EXT2_OS_MASIX: printf ("Masix"); break;
 628             default:            printf (_("(unknown os)"));
 629         }
 630         printf("\n");
 631         printf(_("Block size=%u (log=%u)\n"), fs->blocksize,
 632                 s->s_log_block_size);
 633         printf(_("Fragment size=%u (log=%u)\n"), fs->fragsize,
 634                 s->s_log_frag_size);
 635         printf(_("%u inodes, %u blocks\n"), s->s_inodes_count,
 636                s->s_blocks_count);
 637         printf(_("%u blocks (%2.2f%%) reserved for the super user\n"),
 638                 s->s_r_blocks_count,
 639                100.0 * s->s_r_blocks_count / s->s_blocks_count);
 640         printf(_("First data block=%u\n"), s->s_first_data_block);
 641         if (fs->group_desc_count > 1)
 642                 printf(_("%u block groups\n"), fs->group_desc_count);
 643         else
 644                 printf(_("%u block group\n"), fs->group_desc_count);
 645         printf(_("%u blocks per group, %u fragments per group\n"),
 646                s->s_blocks_per_group, s->s_frags_per_group);
 647         printf(_("%u inodes per group\n"), s->s_inodes_per_group);
 648
 649         if (fs->group_desc_count == 1) {
 650                 printf("\n");
 651                 return;
 652         }
 653
 654         printf(_("Superblock backups stored on blocks: "));
 655         group_block = s->s_first_data_block;
 656         col_left = 0;
 657         for (i = 1; i < fs->group_desc_count; i++) {
 658                 group_block += s->s_blocks_per_group;
 659                 if (!ext2fs_bg_has_super(fs, i))
 660                         continue;
 661                 if (i != 1)
 662                         printf(", ");
 663                 need = int_log10(group_block) + 2;
 664                 if (need > col_left) {
 665                         printf("\n\t");
 666                         col_left = 72;
 667                 }
 668                 col_left -= need;
 669                 printf("%u", group_block);
 670         }
 671         printf("\n\n");
 672 }
 673
 674 /*
 675  * Set the S_CREATOR_OS field.  Return true if OS is known,
 676  * otherwise, 0.
 677  */
 678 static int set_os(struct ext2_super_block *sb, char *os)
 679 {
 680         if (isdigit (*os))
 681                 sb->s_creator_os = atoi (os);
 682         else if (strcasecmp(os, "linux") == 0)
 683                 sb->s_creator_os = EXT2_OS_LINUX;
 684         else if (strcasecmp(os, "GNU") == 0 || strcasecmp(os, "hurd") == 0)
 685                 sb->s_creator_os = EXT2_OS_HURD;
 686         else if (strcasecmp(os, "masix") == 0)
 687                 sb->s_creator_os = EXT2_OS_MASIX;
 688         else
 689                 return 0;
 690         return 1;
 691 }
 692
 693 #define PATH_SET "PATH=/sbin"
 694
 695 static void parse_raid_opts(const char *opts)
 696 {
 697         char    *buf, *token, *next, *p, *arg;
 698         int     len;
 699         int     raid_usage = 0;
 700
 701         len = strlen(opts);
 702         buf = malloc(len+1);
 703         if (!buf) {
 704                 fprintf(stderr, _("Couldn't allocate memory to parse "
 705                         "raid options!\n"));
 706                 exit(1);
 707         }
 708         strcpy(buf, opts);
 709         for (token = buf; token && *token; token = next) {
 710                 p = strchr(token, ',');
 711                 next = 0;
 712                 if (p) {
 713                         *p = 0;
 714                         next = p+1;
 715                 }
 716                 arg = strchr(token, '=');
 717                 if (arg) {
 718                         *arg = 0;
 719                         arg++;
 720                 }
 721                 if (strcmp(token, "stride") == 0) {
 722                         if (!arg) {
 723                                 raid_usage++;
 724                                 continue;
 725                         }
 726                         fs_stride = strtoul(arg, &p, 0);
 727                         if (*p || (fs_stride == 0)) {
 728                                 fprintf(stderr,
 729                                         _("Invalid stride parameter.\n"));
 730                                 raid_usage++;
 731                                 continue;
 732                         }
 733                 } else
 734                         raid_usage++;
 735         }
 736         if (raid_usage) {
 737                 fprintf(stderr, _("\nBad raid options specified.\n\n"
 738                         "Raid options are separated by commas, "
 739                         "and may take an argument which\n"
 740                         "\tis set off by an equals ('=') sign.\n\n"
 741                         "Valid raid options are:\n"
 742                         "\tstride=<stride length in blocks>\n\n"));
 743                 exit(1);
 744         }
 745 }
 746
 747 static __u32 ok_features[3] = {
 748         EXT3_FEATURE_COMPAT_HAS_JOURNAL,        /* Compat */
 749         EXT2_FEATURE_INCOMPAT_FILETYPE|         /* Incompat */
 750                 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV,
 751         EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER     /* R/O compat */
 752 };
 753
 754
 755 static void PRS(int argc, char *argv[])
 756 {
 757         int             c;
 758         int             size;
 759         char *          tmp;
 760         blk_t           group_blk_max = 8192;
 761         int             blocksize = 0;
 762         int             inode_ratio = 0;
 763         int             reserved_ratio = 5;
 764         ext2_ino_t      num_inodes = 0;
 765         errcode_t       retval;
 766         int             sparse_option = 1;
 767         char *          oldpath = getenv("PATH");
 768         char *          raid_opts = 0;
 769         char *          fs_type = 0;
 770         const char *    feature_set = "filetype";
 771         blk_t           dev_size;
 772 #ifdef linux
 773         struct          utsname ut;
 774 #endif
 775
 776         /* Update our PATH to include /sbin  */
 777         if (oldpath) {
 778                 char *newpath;
 779
 780                 newpath = malloc(sizeof (PATH_SET) + 1 + strlen (oldpath));
 781                 strcpy (newpath, PATH_SET);
 782                 strcat (newpath, ":");
 783                 strcat (newpath, oldpath);
 784                 putenv (newpath);
 785         } else
 786                 putenv (PATH_SET);
 787
 788         tmp = getenv("MKE2FS_SYNC");
 789         if (tmp)
 790                 sync_kludge = atoi(tmp);
 791
 792         setbuf(stdout, NULL);
 793         setbuf(stderr, NULL);
 794         initialize_ext2_error_table();
 795         memset(&param, 0, sizeof(struct ext2_super_block));
 796         param.s_rev_level = 1;  /* Create revision 1 filesystems now */
 797
 798 #ifdef linux
 799         if (uname(&ut)) {
 800                 perror("uname");
 801                 exit(1);
 802         }
 803         if ((ut.release[0] == '1') ||
 804             (ut.release[0] == '2' && ut.release[1] == '.' &&
 805              ut.release[2] < '2' && ut.release[3] == '.')) {
 806                 sparse_option = 0;
 807                 feature_set = NULL;
 808                 param.s_rev_level = 0;
 809         }
 810 #endif
 811         fprintf (stderr, _("mke2fs %s, %s for EXT2 FS %s, %s\n"),
 812                  E2FSPROGS_VERSION, E2FSPROGS_DATE,
 813                  EXT2FS_VERSION, EXT2FS_DATE);
 814         if (argc && *argv)
 815                 program_name = *argv;
 816         while ((c = getopt (argc, argv,
 817                     "b:cf:g:i:jl:m:no:qr:R:s:tvI:J:ST:FL:M:N:O:V")) != EOF)
 818                 switch (c) {
 819                 case 'b':
 820                         blocksize = strtoul(optarg, &tmp, 0);
 821                         if (blocksize < 1024 || blocksize > 4096 || *tmp) {
 822                                 com_err(program_name, 0,
 823                                         _("bad block size - %s"), optarg);
 824                                 exit(1);
 825                         }
 826                         param.s_log_block_size =
 827                                 int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
 828                         group_blk_max = blocksize * 8;
 829                         break;
 830                 case 'c':       /* Check for bad blocks */
 831                 case 't':       /* deprecated */
 832                         cflag = 1;
 833                         break;
 834                 case 'f':
 835                         size = strtoul(optarg, &tmp, 0);
 836                         if (size < 1024 || size > 4096 || *tmp) {
 837                                 com_err(program_name, 0,
 838                                         _("bad fragment size - %s"),
 839                                         optarg);
 840                                 exit(1);
 841                         }
 842                         param.s_log_frag_size =
 843                                 int_log2(size >> EXT2_MIN_BLOCK_LOG_SIZE);
 844                         printf(_("Warning: fragments not supported.  "
 845                                "Ignoring -f option\n"));
 846                         break;
 847                 case 'g':
 848                         param.s_blocks_per_group = strtoul(optarg, &tmp, 0);
 849                         if (*tmp) {
 850                                 com_err(program_name, 0,
 851                                         _("Illegal number for blocks per group"));
 852                                 exit(1);
 853                         }
 854                         if ((param.s_blocks_per_group % 8) != 0) {
 855                                 com_err(program_name, 0,
 856                                 _("blocks per group must be multiple of 8"));
 857                                 exit(1);
 858                         }
 859                         break;
 860                 case 'i':
 861                         inode_ratio = strtoul(optarg, &tmp, 0);
 862                         if (inode_ratio < 1024 || inode_ratio > 4096 * 1024 ||
 863                             *tmp) {
 864                                 com_err(program_name, 0,
 865                                         _("bad inode ratio - %s"), optarg);
 866                                 exit(1);
 867                         }
 868                         break;
 869                 case 'J':
 870                         parse_journal_opts(optarg);
 871                         break;
 872                 case 'j':
 873                         param.s_feature_compat |=
 874                                 EXT3_FEATURE_COMPAT_HAS_JOURNAL;
 875                         if (!journal_size)
 876                                 journal_size = -1;
 877                         break;
 878                 case 'l':
 879                         bad_blocks_filename = malloc(strlen(optarg)+1);
 880                         if (!bad_blocks_filename) {
 881                                 com_err(program_name, ENOMEM,
 882                                         _("in malloc for bad_blocks_filename"));
 883                                 exit(1);
 884                         }
 885                         strcpy(bad_blocks_filename, optarg);
 886                         break;
 887                 case 'm':
 888                         reserved_ratio = strtoul(optarg, &tmp, 0);
 889                         if (reserved_ratio > 50 || *tmp) {
 890                                 com_err(program_name, 0,
 891                                         _("bad reserved blocks percent - %s"),
 892                                         optarg);
 893                                 exit(1);
 894                         }
 895                         break;
 896                 case 'n':
 897                         noaction++;
 898                         break;
 899                 case 'o':
 900                         creator_os = optarg;
 901                         break;
 902                 case 'r':
 903                         param.s_rev_level = atoi(optarg);
 904                         if (param.s_rev_level == EXT2_GOOD_OLD_REV) {
 905                                 sparse_option = 0;
 906                                 feature_set = NULL;
 907                         }
 908                         break;
 909                 case 's':       /* deprecated */
 910                         sparse_option = atoi(optarg);
 911                         break;
 912 #ifdef EXT2_DYNAMIC_REV
 913                 case 'I':
 914                         param.s_inode_size = atoi(optarg);
 915                         break;
 916 #endif
 917                 case 'N':
 918                         num_inodes = atoi(optarg);
 919                         break;
 920                 case 'v':
 921                         verbose = 1;
 922                         break;
 923                 case 'q':
 924                         quiet = 1;
 925                         break;
 926                 case 'F':
 927                         force = 1;
 928                         break;
 929                 case 'L':
 930                         volume_label = optarg;
 931                         break;
 932                 case 'M':
 933                         mount_dir = optarg;
 934                         break;
 935                 case 'O':
 936                         feature_set = optarg;
 937                         break;
 938                 case 'R':
 939                         raid_opts = optarg;
 940                         break;
 941                 case 'S':
 942                         super_only = 1;
 943                         break;
 944                 case 'T':
 945                         fs_type = optarg;
 946                         break;
 947                 case 'V':
 948                         /* Print version number and exit */
 949                         fprintf(stderr, _("\tUsing %s\n"),
 950                                 error_message(EXT2_ET_BASE));
 951                         exit(0);
 952                 default:
 953                         usage();
 954                 }
 955         if (optind == argc)
 956                 usage();
 957         device_name = argv[optind];
 958         optind++;
 959         if (optind < argc) {
 960                 unsigned long tmp2  = strtoul(argv[optind++], &tmp, 0);
 961
 962                 if ((*tmp) || (tmp2 > 0xfffffffful)) {
 963                         com_err(program_name, 0, _("bad blocks count - %s"),
 964                                 argv[optind - 1]);
 965                         exit(1);
 966                 }
 967                 param.s_blocks_count = tmp2;
 968         }
 969         if (optind < argc)
 970                 usage();
 971
 972         if (raid_opts)
 973                 parse_raid_opts(raid_opts);
 974
 975         /* Parse the user-supplied feature_set, if any. */
 976         if (feature_set && !strncasecmp(feature_set, "none", 4))
 977                 feature_set = NULL;
 978         if (feature_set && e2p_edit_feature(feature_set,
 979                                             &param.s_feature_compat,
 980                                             ok_features)) {
 981                 fprintf(stderr, _("Invalid filesystem option set: %s\n"),
 982                         feature_set);
 983                 exit(1);
 984         }
 985
 986         if (sparse_option)
 987                 param.s_feature_ro_compat |=
 988                         EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
 989
 990         if (param.s_rev_level == EXT2_GOOD_OLD_REV &&
 991             (param.s_feature_compat || param.s_feature_ro_compat ||
 992              param.s_feature_incompat))
 993                 param.s_rev_level = 1;  /* Create a revision 1 filesystem */
 994
 995         if (!force)
 996                 check_plausibility(device_name);
 997         check_mount(device_name, force, _("filesystem"));
 998
 999         param.s_log_frag_size = param.s_log_block_size;
1000
1001         if (noaction && param.s_blocks_count) {
1002                 dev_size = param.s_blocks_count;
1003                 retval = 0;
1004         } else
1005                 retval = ext2fs_get_device_size(device_name,
1006                                                 EXT2_BLOCK_SIZE(&param),
1007                                                 &dev_size);
1008         if (retval && (retval != EXT2_ET_UNIMPLEMENTED)) {
1009                 com_err(program_name, retval,
1010                         _("while trying to determine filesystem size"));
1011                 exit(1);
1012         }
1013         if (!param.s_blocks_count) {
1014                 if (retval == EXT2_ET_UNIMPLEMENTED) {
1015                         com_err(program_name, 0,
1016                                 _("Couldn't determine device size; you "
1017                                 "must specify\nthe size of the "
1018                                 "filesystem\n"));
1019                         exit(1);
1020                 } else {
1021                         if (dev_size == 0) {
1022                                 com_err(program_name, 0,
1023                                 _("Device size reported to be zero.  "
1024                                   "Invalid partition specified, or\n\t"
1025                                   "partition table wasn't reread "
1026                                   "after running fdisk, due to\n\t"
1027                                   "a modified partition being busy "
1028                                   "and in use.  You may need to reboot\n\t"
1029                                   "to re-read your partition table.\n"
1030                                   ));
1031                                 exit(1);
1032                         }
1033                         param.s_blocks_count = dev_size;
1034                 }
1035
1036         } else if (!force && (param.s_blocks_count > dev_size)) {
1037                 com_err(program_name, 0,
1038                         _("Filesystem larger than apparent filesystem size."));
1039                 proceed_question();
1040         }
1041
1042         /*
1043          * If the user asked for HAS_JOURNAL, then make sure a journal
1044          * gets created.
1045          */
1046         if ((param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
1047             !journal_size)
1048                 journal_size = -1;
1049         if (!fs_type &&
1050             (param.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
1051                 if (!fs_type)
1052                         fs_type = "journal";
1053                 reserved_ratio = 0;
1054         }
1055         set_fs_defaults(fs_type, &param, blocksize, &inode_ratio);
1056
1057         if (param.s_blocks_per_group) {
1058                 if (param.s_blocks_per_group < 256 ||
1059                     param.s_blocks_per_group > group_blk_max || *tmp) {
1060                         com_err(program_name, 0,
1061                                 _("blocks per group count out of range"));
1062                         exit(1);
1063                 }
1064         }
1065
1066         /*
1067          * Calculate number of inodes based on the inode ratio
1068          */
1069         param.s_inodes_count = num_inodes ? num_inodes :
1070                 ((__u64) param.s_blocks_count * EXT2_BLOCK_SIZE(&param))
1071                         / inode_ratio;
1072
1073         /*
1074          * Calculate number of blocks to reserve
1075          */
1076         param.s_r_blocks_count = (param.s_blocks_count * reserved_ratio) / 100;
1077
1078 }
1079
1080 int main (int argc, char *argv[])
1081 {
1082         errcode_t       retval = 0;
1083         ext2_filsys     fs;
1084         badblocks_list  bb_list = 0;
1085         int             journal_blocks;
1086         int             i, val;
1087
1088 #ifdef ENABLE_NLS
1089         setlocale(LC_MESSAGES, "");
1090         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1091         textdomain(NLS_CAT_NAME);
1092 #endif
1093         PRS(argc, argv);
1094
1095         /*
1096          * Initialize the superblock....
1097          */
1098         retval = ext2fs_initialize(device_name, 0, &param,
1099                                    unix_io_manager, &fs);
1100         if (retval) {
1101                 com_err(device_name, retval, _("while setting up superblock"));
1102                 exit(1);
1103         }
1104
1105         /*
1106          * Wipe out the old on-disk superblock
1107          */
1108         if (!noaction) {
1109                 zap_sector(fs, 2);
1110                 zap_sector(fs, 3);
1111         }
1112
1113         /*
1114          * Generate a UUID for it...
1115          */
1116         uuid_generate(fs->super->s_uuid);
1117
1118         /*
1119          * Add "jitter" to the superblock's check interval so that we
1120          * don't check all the filesystems at the same time.  We use a
1121          * kludgy hack of using the UUID to derive a random jitter value.
1122          */
1123         for (i = 0, val = 0 ; i < sizeof(fs->super->s_uuid); i++)
1124                 val += fs->super->s_uuid[i];
1125         fs->super->s_max_mnt_count += val % EXT2_DFL_MAX_MNT_COUNT;
1126
1127         /*
1128          * Override the creator OS, if applicable
1129          */
1130         if (creator_os && !set_os(fs->super, creator_os)) {
1131                 com_err (program_name, 0, _("unknown os - %s"), creator_os);
1132                 exit(1);
1133         }
1134
1135         /*
1136          * For the Hurd, we will turn off filetype since it doesn't
1137          * support it.
1138          */
1139         if (fs->super->s_creator_os == EXT2_OS_HURD)
1140                 fs->super->s_feature_incompat &=
1141                         ~EXT2_FEATURE_INCOMPAT_FILETYPE;
1142
1143         /*
1144          * Set the volume label...
1145          */
1146         if (volume_label) {
1147                 memset(fs->super->s_volume_name, 0,
1148                        sizeof(fs->super->s_volume_name));
1149                 strncpy(fs->super->s_volume_name, volume_label,
1150                         sizeof(fs->super->s_volume_name));
1151         }
1152
1153         /*
1154          * Set the last mount directory
1155          */
1156         if (mount_dir) {
1157                 memset(fs->super->s_last_mounted, 0,
1158                        sizeof(fs->super->s_last_mounted));
1159                 strncpy(fs->super->s_last_mounted, mount_dir,
1160                         sizeof(fs->super->s_last_mounted));
1161         }
1162
1163         if (!quiet || noaction)
1164                 show_stats(fs);
1165
1166         if (noaction)
1167                 exit(0);
1168
1169         if (fs->super->s_feature_incompat &
1170             EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
1171                 create_journal_dev(fs);
1172                 ext2fs_close(fs);
1173                 exit(0);
1174         }
1175
1176         if (bad_blocks_filename)
1177                 read_bb_file(fs, &bb_list, bad_blocks_filename);
1178         if (cflag)
1179                 test_disk(fs, &bb_list);
1180
1181         handle_bad_blocks(fs, bb_list);
1182         fs->stride = fs_stride;
1183         retval = ext2fs_allocate_tables(fs);
1184         if (retval) {
1185                 com_err(program_name, retval,
1186                         _("while trying to allocate filesystem tables"));
1187                 exit(1);
1188         }
1189         if (super_only) {
1190                 fs->super->s_state |= EXT2_ERROR_FS;
1191                 fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY);
1192         } else {
1193                 int rsv = 65536 / EXT2_BLOCK_SIZE(fs->super);
1194                 unsigned long blocks = fs->super->s_blocks_count;
1195                 unsigned long start = (blocks & ~(rsv - 1)) - rsv;
1196                 blk_t ret_blk;
1197
1198 #ifdef ZAP_BOOTBLOCK
1199                 zap_sector(fs, 0);
1200 #endif
1201                 /*
1202                  * Wipe out any old MD RAID (or other) metadata at the end
1203                  * of the device.  This will also verify that the device is
1204                  * as large as we think it is.
1205                  */
1206                 retval = zero_blocks(fs, start, blocks - start,
1207                                      NULL, &ret_blk, NULL);
1208                 if (retval) {
1209                         com_err(program_name, retval,
1210                                 _("zeroing block %u at end of filesystem"),
1211                                 ret_blk);
1212                         exit(1);
1213                 }
1214                 write_inode_tables(fs);
1215                 create_root_dir(fs);
1216                 create_lost_and_found(fs);
1217                 reserve_inodes(fs);
1218                 create_bad_block_inode(fs, bb_list);
1219         }
1220
1221         if (journal_device) {
1222                 ext2_filsys     jfs;
1223
1224                 if (!force)
1225                         check_plausibility(journal_device);
1226                 check_mount(journal_device, force, _("journal"));
1227
1228                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1229                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
1230                                      fs->blocksize, unix_io_manager, &jfs);
1231                 if (retval) {
1232                         com_err(program_name, retval,
1233                                 _("while trying to open journal device %s\n"),
1234                                 journal_device);
1235                         exit(1);
1236                 }
1237                 if (!quiet) {
1238                         printf(_("Creating journal on device %s: "),
1239                                journal_device);
1240                         fflush(stdout);
1241                 }
1242                 retval = ext2fs_add_journal_device(fs, jfs);
1243                 if(retval) {
1244                         com_err (program_name, retval,
1245                                  _("\n\twhile trying to add journal to device %s"),
1246                                  journal_device);
1247                         exit(1);
1248                 }
1249                 if (!quiet)
1250                         printf(_("done\n"));
1251                 ext2fs_close(jfs);
1252         } else if (journal_size) {
1253                 journal_blocks = figure_journal_size(journal_size, fs);
1254
1255                 if (!journal_blocks) {
1256                         fs->super->s_feature_compat &=
1257                                 ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
1258                         goto no_journal;
1259                 }
1260                 if (!quiet) {
1261                         printf(_("Creating journal (%d blocks): "),
1262                                journal_blocks);
1263                         fflush(stdout);
1264                 }
1265                 retval = ext2fs_add_journal_inode(fs, journal_blocks,
1266                                                   journal_flags);
1267                 if (retval) {
1268                         com_err (program_name, retval,
1269                                  _("\n\twhile trying to create journal"));
1270                         exit(1);
1271                 }
1272                 if (!quiet)
1273                         printf(_("done\n"));
1274         }
1275 no_journal:
1276
1277         if (!quiet)
1278                 printf(_("Writing superblocks and "
1279                        "filesystem accounting information: "));
1280         retval = ext2fs_flush(fs);
1281         if (retval) {
1282                 printf(_("\nWarning, had trouble writing out superblocks."));
1283         }
1284         if (!quiet) {
1285                 printf(_("done\n\n"));
1286                 printf(_("This filesystem will be automatically "
1287                          "checked every %d mounts or\n"
1288                          "%g days, whichever comes first.  "
1289                          "Use tune2fs -c or -i to override.\n"),
1290                        fs->super->s_max_mnt_count,
1291                        (double)fs->super->s_checkinterval / (3600 * 24));
1292         }
1293         ext2fs_close(fs);
1294         return 0;
1295 }