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-rw-r--r--e2fsprogs/mke2fs.c1336
1 files changed, 0 insertions, 1336 deletions
diff --git a/e2fsprogs/mke2fs.c b/e2fsprogs/mke2fs.c
deleted file mode 100644
index f25ecfb..0000000
--- a/e2fsprogs/mke2fs.c
+++ /dev/null
@@ -1,1336 +0,0 @@
-/* vi: set sw=4 ts=4: */
-/*
- * mke2fs.c - Make a ext2fs filesystem.
- *
- * Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
- * 2003, 2004, 2005 by Theodore Ts'o.
- *
- * This file may be redistributed under the terms of the GNU Public
- * License.
- */
-
-/* Usage: mke2fs [options] device
- *
- * The device may be a block device or a image of one, but this isn't
- * enforced (but it's not much fun on a character device :-).
- */
-
-#include <stdio.h>
-#include <string.h>
-#include <fcntl.h>
-#include <ctype.h>
-#include <time.h>
-#include <getopt.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <mntent.h>
-#include <sys/ioctl.h>
-#include <sys/types.h>
-
-#include "e2fsbb.h"
-#include "ext2fs/ext2_fs.h"
-#include "uuid/uuid.h"
-#include "e2p/e2p.h"
-#include "ext2fs/ext2fs.h"
-#include "util.h"
-
-#define STRIDE_LENGTH 8
-
-#ifndef __sparc__
-#define ZAP_BOOTBLOCK
-#endif
-
-static const char * device_name;
-
-/* Command line options */
-static int cflag;
-static int quiet;
-static int super_only;
-static int force;
-static int noaction;
-static int journal_size;
-static int journal_flags;
-static const char *bad_blocks_filename;
-static __u32 fs_stride;
-
-static struct ext2_super_block param;
-static char *creator_os;
-static char *volume_label;
-static char *mount_dir;
-static char *journal_device = NULL;
-static int sync_kludge; /* Set using the MKE2FS_SYNC env. option */
-
-static int sys_page_size = 4096;
-static int linux_version_code = 0;
-
-static int int_log2(int arg)
-{
- int l = 0;
-
- arg >>= 1;
- while (arg) {
- l++;
- arg >>= 1;
- }
- return l;
-}
-
-static int int_log10(unsigned int arg)
-{
- int l;
-
- for (l=0; arg ; l++)
- arg = arg / 10;
- return l;
-}
-
-/*
- * This function sets the default parameters for a filesystem
- *
- * The type is specified by the user. The size is the maximum size
- * (in megabytes) for which a set of parameters applies, with a size
- * of zero meaning that it is the default parameter for the type.
- * Note that order is important in the table below.
- */
-#define DEF_MAX_BLOCKSIZE -1
-static const char default_str[] = "default";
-struct mke2fs_defaults {
- const char *type;
- int size;
- int blocksize;
- int inode_ratio;
-};
-
-static const struct mke2fs_defaults settings[] = {
- { default_str, 0, 4096, 8192 },
- { default_str, 512, 1024, 4096 },
- { default_str, 3, 1024, 8192 },
- { "journal", 0, 4096, 8192 },
- { "news", 0, 4096, 4096 },
- { "largefile", 0, 4096, 1024 * 1024 },
- { "largefile4", 0, 4096, 4096 * 1024 },
- { 0, 0, 0, 0},
-};
-
-static void set_fs_defaults(const char *fs_type,
- struct ext2_super_block *super,
- int blocksize, int sector_size,
- int *inode_ratio)
-{
- int megs;
- int ratio = 0;
- const struct mke2fs_defaults *p;
- int use_bsize = 1024;
-
- megs = super->s_blocks_count * (EXT2_BLOCK_SIZE(super) / 1024) / 1024;
- if (inode_ratio)
- ratio = *inode_ratio;
- if (!fs_type)
- fs_type = default_str;
- for (p = settings; p->type; p++) {
- if ((strcmp(p->type, fs_type) != 0) &&
- (strcmp(p->type, default_str) != 0))
- continue;
- if ((p->size != 0) && (megs > p->size))
- continue;
- if (ratio == 0)
- *inode_ratio = p->inode_ratio < blocksize ?
- blocksize : p->inode_ratio;
- use_bsize = p->blocksize;
- }
- if (blocksize <= 0) {
- if (use_bsize == DEF_MAX_BLOCKSIZE) {
- use_bsize = sys_page_size;
- if ((linux_version_code < (2*65536 + 6*256)) &&
- (use_bsize > 4096))
- use_bsize = 4096;
- }
- if (sector_size && use_bsize < sector_size)
- use_bsize = sector_size;
- if ((blocksize < 0) && (use_bsize < (-blocksize)))
- use_bsize = -blocksize;
- blocksize = use_bsize;
- super->s_blocks_count /= blocksize / 1024;
- }
- super->s_log_frag_size = super->s_log_block_size =
- int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
-}
-
-
-/*
- * Helper function for read_bb_file and test_disk
- */
-static void invalid_block(ext2_filsys fs EXT2FS_ATTR((unused)), blk_t blk)
-{
- bb_error_msg("Bad block %u out of range; ignored", blk);
- return;
-}
-
-/*
- * Busybox stuff
- */
-static void mke2fs_error_msg_and_die(int retval, const char *fmt, ...)__attribute__ ((format (printf, 2, 3)));
-static void mke2fs_error_msg_and_die(int retval, const char *fmt, ...)
-{
- va_list ap;
-
- if (retval) {
- va_start(ap, fmt);
- fprintf(stderr,"\nCould not ");
- vfprintf(stderr, fmt, ap);
- fprintf(stderr, "\n");
- va_end(ap);
- exit(EXIT_FAILURE);
- }
-}
-
-static void mke2fs_verbose(const char *fmt, ...)__attribute__ ((format (printf, 1, 2)));
-static void mke2fs_verbose(const char *fmt, ...)
-{
- va_list ap;
-
- if (!quiet) {
- va_start(ap, fmt);
- vfprintf(stdout, fmt, ap);
- fflush(stdout);
- va_end(ap);
- }
-}
-
-static void mke2fs_verbose_done(void)
-{
- mke2fs_verbose("done\n");
-}
-
-static void mke2fs_warning_msg(int retval, char *fmt, ... )__attribute__ ((format (printf, 2, 3)));
-static void mke2fs_warning_msg(int retval, char *fmt, ... )
-{
- va_list ap;
-
- if (retval) {
- va_start(ap, fmt);
- fprintf(stderr,"\nWarning: ");
- vfprintf(stderr, fmt, ap);
- fprintf(stderr, "\n");
- va_end(ap);
- }
-}
-
-/*
- * Reads the bad blocks list from a file
- */
-static void read_bb_file(ext2_filsys fs, badblocks_list *bb_list,
- const char *bad_blocks_file)
-{
- FILE *f;
- errcode_t retval;
-
- f = xfopen(bad_blocks_file, "r");
- retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
- fclose (f);
- mke2fs_error_msg_and_die(retval, "read bad blocks from list");
-}
-
-/*
- * Runs the badblocks program to test the disk
- */
-static void test_disk(ext2_filsys fs, badblocks_list *bb_list)
-{
- FILE *f;
- errcode_t retval;
- char buf[1024];
-
- sprintf(buf, "badblocks -b %d %s%s%s %d", fs->blocksize,
- quiet ? "" : "-s ", (cflag > 1) ? "-w " : "",
- fs->device_name, fs->super->s_blocks_count);
- mke2fs_verbose("Running command: %s\n", buf);
- f = popen(buf, "r");
- if (!f) {
- bb_perror_msg_and_die("cannot run '%s'", buf);
- }
- retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
- pclose(f);
- mke2fs_error_msg_and_die(retval, "read bad blocks from program");
-}
-
-static void handle_bad_blocks(ext2_filsys fs, badblocks_list bb_list)
-{
- dgrp_t i;
- blk_t j;
- unsigned must_be_good;
- blk_t blk;
- badblocks_iterate bb_iter;
- errcode_t retval;
- blk_t group_block;
- int group;
- int group_bad;
-
- if (!bb_list)
- return;
-
- /*
- * The primary superblock and group descriptors *must* be
- * good; if not, abort.
- */
- must_be_good = fs->super->s_first_data_block + 1 + fs->desc_blocks;
- for (i = fs->super->s_first_data_block; i <= must_be_good; i++) {
- if (ext2fs_badblocks_list_test(bb_list, i)) {
- bb_error_msg_and_die(
- "Block %d in primary superblock/group descriptor area bad\n"
- "Blocks %d through %d must be good in order to build a filesystem\n"
- "Aborting ...", i, fs->super->s_first_data_block, must_be_good);
- }
- }
-
- /*
- * See if any of the bad blocks are showing up in the backup
- * superblocks and/or group descriptors. If so, issue a
- * warning and adjust the block counts appropriately.
- */
- group_block = fs->super->s_first_data_block +
- fs->super->s_blocks_per_group;
-
- for (i = 1; i < fs->group_desc_count; i++) {
- group_bad = 0;
- for (j=0; j < fs->desc_blocks+1; j++) {
- if (ext2fs_badblocks_list_test(bb_list,
- group_block + j)) {
- mke2fs_warning_msg(!group_bad,
- "the backup superblock/group descriptors at block %d contain\n"
- "bad blocks\n", group_block);
- group_bad++;
- group = ext2fs_group_of_blk(fs, group_block+j);
- fs->group_desc[group].bg_free_blocks_count++;
- fs->super->s_free_blocks_count++;
- }
- }
- group_block += fs->super->s_blocks_per_group;
- }
-
- /*
- * Mark all the bad blocks as used...
- */
- retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter);
- mke2fs_error_msg_and_die(retval, "mark bad blocks as used");
-
- while (ext2fs_badblocks_list_iterate(bb_iter, &blk))
- ext2fs_mark_block_bitmap(fs->block_map, blk);
- ext2fs_badblocks_list_iterate_end(bb_iter);
-}
-
-/*
- * These functions implement a generalized progress meter.
- */
-struct progress_struct {
- char format[20];
- char backup[80];
- __u32 max;
- int skip_progress;
-};
-
-static void progress_init(struct progress_struct *progress,
- const char *label,__u32 max)
-{
- int i;
-
- memset(progress, 0, sizeof(struct progress_struct));
- if (quiet)
- return;
-
- /*
- * Figure out how many digits we need
- */
- i = int_log10(max);
- sprintf(progress->format, "%%%dd/%%%dld", i, i);
- memset(progress->backup, '\b', sizeof(progress->backup)-1);
- progress->backup[sizeof(progress->backup)-1] = 0;
- if ((2*i)+1 < (int) sizeof(progress->backup))
- progress->backup[(2*i)+1] = 0;
- progress->max = max;
-
- progress->skip_progress = 0;
- if (getenv("MKE2FS_SKIP_PROGRESS"))
- progress->skip_progress++;
-
- fputs(label, stdout);
- fflush(stdout);
-}
-
-static void progress_update(struct progress_struct *progress, __u32 val)
-{
- if ((progress->format[0] == 0) || progress->skip_progress)
- return;
- printf(progress->format, val, progress->max);
- fputs(progress->backup, stdout);
-}
-
-static void progress_close(struct progress_struct *progress)
-{
- if (progress->format[0] == 0)
- return;
- printf("%-28s\n", "done");
-}
-
-
-/*
- * Helper function which zeros out _num_ blocks starting at _blk_. In
- * case of an error, the details of the error is returned via _ret_blk_
- * and _ret_count_ if they are non-NULL pointers. Returns 0 on
- * success, and an error code on an error.
- *
- * As a special case, if the first argument is NULL, then it will
- * attempt to free the static zeroizing buffer. (This is to keep
- * programs that check for memory leaks happy.)
- */
-static errcode_t zero_blocks(ext2_filsys fs, blk_t blk, int num,
- struct progress_struct *progress,
- blk_t *ret_blk, int *ret_count)
-{
- int j, count, next_update, next_update_incr;
- static char *buf;
- errcode_t retval;
-
- /* If fs is null, clean up the static buffer and return */
- if (!fs) {
- if (buf) {
- free(buf);
- buf = 0;
- }
- return 0;
- }
- /* Allocate the zeroizing buffer if necessary */
- if (!buf) {
- buf = xzalloc(fs->blocksize * STRIDE_LENGTH);
- }
- /* OK, do the write loop */
- next_update = 0;
- next_update_incr = num / 100;
- if (next_update_incr < 1)
- next_update_incr = 1;
- for (j=0; j < num; j += STRIDE_LENGTH, blk += STRIDE_LENGTH) {
- count = num - j;
- if (count > STRIDE_LENGTH)
- count = STRIDE_LENGTH;
- retval = io_channel_write_blk(fs->io, blk, count, buf);
- if (retval) {
- if (ret_count)
- *ret_count = count;
- if (ret_blk)
- *ret_blk = blk;
- return retval;
- }
- if (progress && j > next_update) {
- next_update += num / 100;
- progress_update(progress, blk);
- }
- }
- return 0;
-}
-
-static void write_inode_tables(ext2_filsys fs)
-{
- errcode_t retval;
- blk_t blk;
- dgrp_t i;
- int num;
- struct progress_struct progress;
-
- if (quiet)
- memset(&progress, 0, sizeof(progress));
- else
- progress_init(&progress, "Writing inode tables: ",
- fs->group_desc_count);
-
- for (i = 0; i < fs->group_desc_count; i++) {
- progress_update(&progress, i);
-
- blk = fs->group_desc[i].bg_inode_table;
- num = fs->inode_blocks_per_group;
-
- retval = zero_blocks(fs, blk, num, 0, &blk, &num);
- mke2fs_error_msg_and_die(retval,
- "write %d blocks in inode table starting at %d.",
- num, blk);
- if (sync_kludge) {
- if (sync_kludge == 1)
- sync();
- else if ((i % sync_kludge) == 0)
- sync();
- }
- }
- zero_blocks(0, 0, 0, 0, 0, 0);
- progress_close(&progress);
-}
-
-static void create_root_dir(ext2_filsys fs)
-{
- errcode_t retval;
- struct ext2_inode inode;
-
- retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0);
- mke2fs_error_msg_and_die(retval, "create root dir");
- if (geteuid()) {
- retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode);
- mke2fs_error_msg_and_die(retval, "read root inode");
- inode.i_uid = getuid();
- if (inode.i_uid)
- inode.i_gid = getgid();
- retval = ext2fs_write_new_inode(fs, EXT2_ROOT_INO, &inode);
- mke2fs_error_msg_and_die(retval, "set root inode ownership");
- }
-}
-
-static void create_lost_and_found(ext2_filsys fs)
-{
- errcode_t retval;
- ext2_ino_t ino;
- const char *name = "lost+found";
- int i = 1;
- char *msg = "create";
- int lpf_size = 0;
-
- fs->umask = 077;
- retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name);
- if (retval) {
- goto CREATE_LOST_AND_FOUND_ERROR;
- }
-
- retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino);
- if (retval) {
- msg = "lookup";
- goto CREATE_LOST_AND_FOUND_ERROR;
- }
-
- for (; i < EXT2_NDIR_BLOCKS; i++) {
- if ((lpf_size += fs->blocksize) >= 16*1024)
- break;
- retval = ext2fs_expand_dir(fs, ino);
- msg = "expand";
-CREATE_LOST_AND_FOUND_ERROR:
- mke2fs_error_msg_and_die(retval, "%s %s", msg, name);
- }
-}
-
-static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list)
-{
- errcode_t retval;
-
- ext2fs_mark_inode_bitmap(fs->inode_map, EXT2_BAD_INO);
- fs->group_desc[0].bg_free_inodes_count--;
- fs->super->s_free_inodes_count--;
- retval = ext2fs_update_bb_inode(fs, bb_list);
- mke2fs_error_msg_and_die(retval, "set bad block inode");
-}
-
-static void reserve_inodes(ext2_filsys fs)
-{
- ext2_ino_t i;
- int group;
-
- for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++) {
- ext2fs_mark_inode_bitmap(fs->inode_map, i);
- group = ext2fs_group_of_ino(fs, i);
- fs->group_desc[group].bg_free_inodes_count--;
- fs->super->s_free_inodes_count--;
- }
- ext2fs_mark_ib_dirty(fs);
-}
-
-#define BSD_DISKMAGIC (0x82564557UL) /* The disk magic number */
-#define BSD_MAGICDISK (0x57455682UL) /* The disk magic number reversed */
-#define BSD_LABEL_OFFSET 64
-
-static void zap_sector(ext2_filsys fs, int sect, int nsect)
-{
- char *buf;
- char *fmt = "could not %s %d";
- int retval;
- unsigned int *magic;
-
- buf = xmalloc(512*nsect);
-
- if (sect == 0) {
- /* Check for a BSD disklabel, and don't erase it if so */
- retval = io_channel_read_blk(fs->io, 0, -512, buf);
- if (retval)
- mke2fs_warning_msg(retval, fmt, "read block", 0);
- else {
- magic = (unsigned int *) (buf + BSD_LABEL_OFFSET);
- if ((*magic == BSD_DISKMAGIC) ||
- (*magic == BSD_MAGICDISK))
- return;
- }
- }
-
- memset(buf, 0, 512*nsect);
- io_channel_set_blksize(fs->io, 512);
- retval = io_channel_write_blk(fs->io, sect, -512*nsect, buf);
- io_channel_set_blksize(fs->io, fs->blocksize);
- free(buf);
- mke2fs_warning_msg(retval, fmt, "erase sector", sect);
-}
-
-static void create_journal_dev(ext2_filsys fs)
-{
- struct progress_struct progress;
- errcode_t retval;
- char *buf;
- char *fmt = "%s journal superblock";
- blk_t blk;
- int count;
-
- retval = ext2fs_create_journal_superblock(fs,
- fs->super->s_blocks_count, 0, &buf);
- mke2fs_error_msg_and_die(retval, fmt, "init");
- if (quiet)
- memset(&progress, 0, sizeof(progress));
- else
- progress_init(&progress, "Zeroing journal device: ",
- fs->super->s_blocks_count);
-
- retval = zero_blocks(fs, 0, fs->super->s_blocks_count,
- &progress, &blk, &count);
- mke2fs_error_msg_and_die(retval, "zero journal device (block %u, count %d)",
- blk, count);
- zero_blocks(0, 0, 0, 0, 0, 0);
-
- retval = io_channel_write_blk(fs->io,
- fs->super->s_first_data_block+1,
- 1, buf);
- mke2fs_error_msg_and_die(retval, fmt, "write");
- progress_close(&progress);
-}
-
-static void show_stats(ext2_filsys fs)
-{
- struct ext2_super_block *s = fs->super;
- char *os;
- blk_t group_block;
- dgrp_t i;
- int need, col_left;
-
- mke2fs_warning_msg((param.s_blocks_count != s->s_blocks_count),
- "%d blocks unused\n", param.s_blocks_count - s->s_blocks_count);
- os = e2p_os2string(fs->super->s_creator_os);
- printf( "Filesystem label=%.*s\n"
- "OS type: %s\n"
- "Block size=%u (log=%u)\n"
- "Fragment size=%u (log=%u)\n"
- "%u inodes, %u blocks\n"
- "%u blocks (%2.2f%%) reserved for the super user\n"
- "First data block=%u\n",
- (int) sizeof(s->s_volume_name),
- s->s_volume_name,
- os,
- fs->blocksize, s->s_log_block_size,
- fs->fragsize, s->s_log_frag_size,
- s->s_inodes_count, s->s_blocks_count,
- s->s_r_blocks_count, 100.0 * s->s_r_blocks_count / s->s_blocks_count,
- s->s_first_data_block);
- free(os);
- if (s->s_reserved_gdt_blocks) {
- printf("Maximum filesystem blocks=%lu\n",
- (s->s_reserved_gdt_blocks + fs->desc_blocks) *
- (fs->blocksize / sizeof(struct ext2_group_desc)) *
- s->s_blocks_per_group);
- }
- printf( "%u block group%s\n"
- "%u blocks per group, %u fragments per group\n"
- "%u inodes per group\n",
- fs->group_desc_count, (fs->group_desc_count > 1) ? "s" : "",
- s->s_blocks_per_group, s->s_frags_per_group,
- s->s_inodes_per_group);
- if (fs->group_desc_count == 1) {
- puts("");
- return;
- }
-
- printf("Superblock backups stored on blocks: ");
- group_block = s->s_first_data_block;
- col_left = 0;
- for (i = 1; i < fs->group_desc_count; i++) {
- group_block += s->s_blocks_per_group;
- if (!ext2fs_bg_has_super(fs, i))
- continue;
- if (i != 1)
- printf(", ");
- need = int_log10(group_block) + 2;
- if (need > col_left) {
- printf("\n\t");
- col_left = 72;
- }
- col_left -= need;
- printf("%u", group_block);
- }
- puts("\n");
-}
-
-/*
- * Set the S_CREATOR_OS field. Return true if OS is known,
- * otherwise, 0.
- */
-static int set_os(struct ext2_super_block *sb, char *os)
-{
- if (isdigit (*os)) {
- sb->s_creator_os = atoi(os);
- return 1;
- }
-
- if((sb->s_creator_os = e2p_string2os(os)) >= 0) {
- return 1;
- } else if (!strcasecmp("GNU", os)) {
- sb->s_creator_os = EXT2_OS_HURD;
- return 1;
- }
- return 0;
-}
-
-static void parse_extended_opts(struct ext2_super_block *sb_param,
- const char *opts)
-{
- char *buf, *token, *next, *p, *arg;
- int r_usage = 0;
-
- buf = xstrdup(opts);
- for (token = buf; token && *token; token = next) {
- p = strchr(token, ',');
- next = 0;
- if (p) {
- *p = 0;
- next = p+1;
- }
- arg = strchr(token, '=');
- if (arg) {
- *arg = 0;
- arg++;
- }
- if (strcmp(token, "stride") == 0) {
- if (!arg) {
- r_usage++;
- continue;
- }
- fs_stride = strtoul(arg, &p, 0);
- if (*p || (fs_stride == 0)) {
- bb_error_msg("Invalid stride parameter: %s", arg);
- r_usage++;
- continue;
- }
- } else if (!strcmp(token, "resize")) {
- unsigned long resize, bpg, rsv_groups;
- unsigned long group_desc_count, desc_blocks;
- unsigned int gdpb, blocksize;
- int rsv_gdb;
-
- if (!arg) {
- r_usage++;
- continue;
- }
-
- resize = parse_num_blocks(arg,
- sb_param->s_log_block_size);
-
- if (resize == 0) {
- bb_error_msg("Invalid resize parameter: %s", arg);
- r_usage++;
- continue;
- }
- if (resize <= sb_param->s_blocks_count) {
- bb_error_msg("The resize maximum must be greater "
- "than the filesystem size");
- r_usage++;
- continue;
- }
-
- blocksize = EXT2_BLOCK_SIZE(sb_param);
- bpg = sb_param->s_blocks_per_group;
- if (!bpg)
- bpg = blocksize * 8;
- gdpb = blocksize / sizeof(struct ext2_group_desc);
- group_desc_count = (sb_param->s_blocks_count +
- bpg - 1) / bpg;
- desc_blocks = (group_desc_count +
- gdpb - 1) / gdpb;
- rsv_groups = (resize + bpg - 1) / bpg;
- rsv_gdb = (rsv_groups + gdpb - 1) / gdpb -
- desc_blocks;
- if (rsv_gdb > EXT2_ADDR_PER_BLOCK(sb_param))
- rsv_gdb = EXT2_ADDR_PER_BLOCK(sb_param);
-
- if (rsv_gdb > 0) {
- sb_param->s_feature_compat |=
- EXT2_FEATURE_COMPAT_RESIZE_INODE;
-
- sb_param->s_reserved_gdt_blocks = rsv_gdb;
- }
- } else
- r_usage++;
- }
- if (r_usage) {
- bb_error_msg_and_die(
- "\nBad options specified.\n\n"
- "Extended options are separated by commas, "
- "and may take an argument which\n"
- "\tis set off by an equals ('=') sign.\n\n"
- "Valid extended options are:\n"
- "\tstride=<stride length in blocks>\n"
- "\tresize=<resize maximum size in blocks>\n");
- }
-}
-
-static __u32 ok_features[3] = {
- EXT3_FEATURE_COMPAT_HAS_JOURNAL |
- EXT2_FEATURE_COMPAT_RESIZE_INODE |
- EXT2_FEATURE_COMPAT_DIR_INDEX, /* Compat */
- EXT2_FEATURE_INCOMPAT_FILETYPE| /* Incompat */
- EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|
- EXT2_FEATURE_INCOMPAT_META_BG,
- EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER /* R/O compat */
-};
-
-static int PRS(int argc, char *argv[])
-{
- int c;
- int size;
- char * tmp;
- int blocksize = 0;
- int inode_ratio = 0;
- int inode_size = 0;
- int reserved_ratio = 5;
- int sector_size = 0;
- int show_version_only = 0;
- ext2_ino_t num_inodes = 0;
- errcode_t retval;
- char * extended_opts = 0;
- const char * fs_type = 0;
- blk_t dev_size;
- long sysval;
-
- /* Update our PATH to include /sbin */
- e2fs_set_sbin_path();
-
- tmp = getenv("MKE2FS_SYNC");
- if (tmp)
- sync_kludge = atoi(tmp);
-
- /* Determine the system page size if possible */
-#if (!defined(_SC_PAGESIZE) && defined(_SC_PAGE_SIZE))
-#define _SC_PAGESIZE _SC_PAGE_SIZE
-#endif
-#ifdef _SC_PAGESIZE
- sysval = sysconf(_SC_PAGESIZE);
- if (sysval > 0)
- sys_page_size = sysval;
-#endif /* _SC_PAGESIZE */
-
- setbuf(stdout, NULL);
- setbuf(stderr, NULL);
- memset(&param, 0, sizeof(struct ext2_super_block));
- param.s_rev_level = 1; /* Create revision 1 filesystems now */
- param.s_feature_incompat |= EXT2_FEATURE_INCOMPAT_FILETYPE;
- param.s_feature_ro_compat |= EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
-
-#ifdef __linux__
- linux_version_code = get_linux_version_code();
- if (linux_version_code && linux_version_code < KERNEL_VERSION(2,2,0)) {
- param.s_rev_level = 0;
- param.s_feature_incompat = 0;
- param.s_feature_compat = 0;
- param.s_feature_ro_compat = 0;
- }
-#endif
-
- /* If called as mkfs.ext3, create a journal inode */
- if (last_char_is(applet_name, '3'))
- journal_size = -1;
-
- while ((c = getopt (argc, argv,
- "b:cE:f:g:i:jl:m:no:qr:R:s:tvI:J:ST:FL:M:N:O:V")) != EOF) {
- switch (c) {
- case 'b':
- blocksize = xatou_range(optarg, EXT2_MIN_BLOCK_SIZE, EXT2_MAX_BLOCK_SIZE);
- mke2fs_warning_msg((blocksize > 4096),
- "blocksize %d not usable on most systems",
- blocksize);
- param.s_log_block_size =
- int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
- break;
- case 'c': /* Check for bad blocks */
- case 't': /* deprecated */
- cflag++;
- break;
- case 'f':
- size = xatou_range(optarg, EXT2_MIN_BLOCK_SIZE, EXT2_MAX_BLOCK_SIZE);
- param.s_log_frag_size =
- int_log2(size >> EXT2_MIN_BLOCK_LOG_SIZE);
- mke2fs_warning_msg(1, "fragments not supported. Ignoring -f option");
- break;
- case 'g':
- param.s_blocks_per_group = xatou32(optarg);
- if ((param.s_blocks_per_group % 8) != 0) {
- bb_error_msg_and_die("blocks per group must be multiple of 8");
- }
- break;
- case 'i':
- /* Huh? is "* 1024" correct? */
- inode_ratio = xatou_range(optarg, EXT2_MIN_BLOCK_SIZE, EXT2_MAX_BLOCK_SIZE * 1024);
- break;
- case 'J':
- parse_journal_opts(&journal_device, &journal_flags, &journal_size, optarg);
- break;
- case 'j':
- param.s_feature_compat |=
- EXT3_FEATURE_COMPAT_HAS_JOURNAL;
- if (!journal_size)
- journal_size = -1;
- break;
- case 'l':
- bad_blocks_filename = optarg;
- break;
- case 'm':
- reserved_ratio = xatou_range(optarg, 0, 50);
- break;
- case 'n':
- noaction++;
- break;
- case 'o':
- creator_os = optarg;
- break;
- case 'r':
- param.s_rev_level = xatoi_u(optarg);
- if (param.s_rev_level == EXT2_GOOD_OLD_REV) {
- param.s_feature_incompat = 0;
- param.s_feature_compat = 0;
- param.s_feature_ro_compat = 0;
- }
- break;
- case 's': /* deprecated */
- if (xatou(optarg))
- param.s_feature_ro_compat |=
- EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
- else
- param.s_feature_ro_compat &=
- ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
- break;
-#ifdef EXT2_DYNAMIC_REV
- case 'I':
- inode_size = xatoi_u(optarg);
- break;
-#endif
- case 'N':
- num_inodes = xatoi_u(optarg);
- break;
- case 'v':
- quiet = 0;
- break;
- case 'q':
- quiet = 1;
- break;
- case 'F':
- force = 1;
- break;
- case 'L':
- volume_label = optarg;
- break;
- case 'M':
- mount_dir = optarg;
- break;
- case 'O':
- if (!strcmp(optarg, "none")) {
- param.s_feature_compat = 0;
- param.s_feature_incompat = 0;
- param.s_feature_ro_compat = 0;
- break;
- }
- if (e2p_edit_feature(optarg,
- &param.s_feature_compat,
- ok_features)) {
- bb_error_msg_and_die("Invalid filesystem option set: %s", optarg);
- }
- break;
- case 'E':
- case 'R':
- extended_opts = optarg;
- break;
- case 'S':
- super_only = 1;
- break;
- case 'T':
- fs_type = optarg;
- break;
- case 'V':
- /* Print version number and exit */
- show_version_only = 1;
- quiet = 0;
- break;
- default:
- bb_show_usage();
- }
- }
- if ((optind == argc) /*&& !show_version_only*/)
- bb_show_usage();
- device_name = argv[optind++];
-
- mke2fs_verbose("mke2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
-
- if (show_version_only) {
- return 0;
- }
-
- /*
- * If there's no blocksize specified and there is a journal
- * device, use it to figure out the blocksize
- */
- if (blocksize <= 0 && journal_device) {
- ext2_filsys jfs;
- io_manager io_ptr;
-
-#ifdef CONFIG_TESTIO_DEBUG
- io_ptr = test_io_manager;
- test_io_backing_manager = unix_io_manager;
-#else
- io_ptr = unix_io_manager;
-#endif
- retval = ext2fs_open(journal_device,
- EXT2_FLAG_JOURNAL_DEV_OK, 0,
- 0, io_ptr, &jfs);
- mke2fs_error_msg_and_die(retval, "open journal device %s", journal_device);
- if ((blocksize < 0) && (jfs->blocksize < (unsigned) (-blocksize))) {
- bb_error_msg_and_die(
- "Journal dev blocksize (%d) smaller than "
- "minimum blocksize %d\n", jfs->blocksize,
- -blocksize);
- }
- blocksize = jfs->blocksize;
- param.s_log_block_size =
- int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
- ext2fs_close(jfs);
- }
-
- if (blocksize > sys_page_size) {
- mke2fs_warning_msg(1, "%d-byte blocks too big for system (max %d)",
- blocksize, sys_page_size);
- if (!force) {
- proceed_question();
- }
- bb_error_msg("Forced to continue");
- }
- mke2fs_warning_msg(((blocksize > 4096) &&
- (param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)),
- "some 2.4 kernels do not support "
- "blocksizes greater than 4096 using ext3.\n"
- "Use -b 4096 if this is an issue for you\n");
-
- if (optind < argc) {
- param.s_blocks_count = parse_num_blocks(argv[optind++],
- param.s_log_block_size);
- mke2fs_error_msg_and_die(!param.s_blocks_count, "invalid blocks count - %s", argv[optind - 1]);
- }
- if (optind < argc)
- bb_show_usage();
-
- if (param.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
- if (!fs_type)
- fs_type = "journal";
- reserved_ratio = 0;
- param.s_feature_incompat = EXT3_FEATURE_INCOMPAT_JOURNAL_DEV;
- param.s_feature_compat = 0;
- param.s_feature_ro_compat = 0;
- }
- if (param.s_rev_level == EXT2_GOOD_OLD_REV &&
- (param.s_feature_compat || param.s_feature_ro_compat ||
- param.s_feature_incompat))
- param.s_rev_level = 1; /* Create a revision 1 filesystem */
-
- check_plausibility(device_name , force);
- check_mount(device_name, force, "filesystem");
-
- param.s_log_frag_size = param.s_log_block_size;
-
- if (noaction && param.s_blocks_count) {
- dev_size = param.s_blocks_count;
- retval = 0;
- } else {
- retry:
- retval = ext2fs_get_device_size(device_name,
- EXT2_BLOCK_SIZE(&param),
- &dev_size);
- if ((retval == EFBIG) &&
- (blocksize == 0) &&
- (param.s_log_block_size == 0)) {
- param.s_log_block_size = 2;
- blocksize = 4096;
- goto retry;
- }
- }
-
- mke2fs_error_msg_and_die((retval && (retval != EXT2_ET_UNIMPLEMENTED)),"determine filesystem size");
-
- if (!param.s_blocks_count) {
- if (retval == EXT2_ET_UNIMPLEMENTED) {
- mke2fs_error_msg_and_die(1,
- "determine device size; you "
- "must specify\nthe size of the "
- "filesystem");
- } else {
- if (dev_size == 0) {
- bb_error_msg_and_die(
- "Device size reported to be zero. "
- "Invalid partition specified, or\n\t"
- "partition table wasn't reread "
- "after running fdisk, due to\n\t"
- "a modified partition being busy "
- "and in use. You may need to reboot\n\t"
- "to re-read your partition table.\n"
- );
- }
- param.s_blocks_count = dev_size;
- if (sys_page_size > EXT2_BLOCK_SIZE(&param))
- param.s_blocks_count &= ~((sys_page_size /
- EXT2_BLOCK_SIZE(&param))-1);
- }
-
- } else if (!force && (param.s_blocks_count > dev_size)) {
- bb_error_msg("Filesystem larger than apparent device size");
- proceed_question();
- }
-
- /*
- * If the user asked for HAS_JOURNAL, then make sure a journal
- * gets created.
- */
- if ((param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
- !journal_size)
- journal_size = -1;
-
- /* Set first meta blockgroup via an environment variable */
- /* (this is mostly for debugging purposes) */
- if ((param.s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) &&
- ((tmp = getenv("MKE2FS_FIRST_META_BG"))))
- param.s_first_meta_bg = atoi(tmp);
-
- /* Get the hardware sector size, if available */
- retval = ext2fs_get_device_sectsize(device_name, &sector_size);
- mke2fs_error_msg_and_die(retval, "determine hardware sector size");
-
- if ((tmp = getenv("MKE2FS_DEVICE_SECTSIZE")) != NULL)
- sector_size = atoi(tmp);
-
- set_fs_defaults(fs_type, &param, blocksize, sector_size, &inode_ratio);
- blocksize = EXT2_BLOCK_SIZE(&param);
-
- if (extended_opts)
- parse_extended_opts(&param, extended_opts);
-
- /* Since sparse_super is the default, we would only have a problem
- * here if it was explicitly disabled.
- */
- if ((param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE) &&
- !(param.s_feature_ro_compat&EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
- bb_error_msg_and_die("reserved online resize blocks not supported "
- "on non-sparse filesystem");
- }
-
- if (param.s_blocks_per_group) {
- if (param.s_blocks_per_group < 256 ||
- param.s_blocks_per_group > 8 * (unsigned) blocksize) {
- bb_error_msg_and_die("blocks per group count out of range");
- }
- }
-
- if (!force && param.s_blocks_count >= (1 << 31)) {
- bb_error_msg_and_die("Filesystem too large. No more than 2**31-1 blocks\n"
- "\t (8TB using a blocksize of 4k) are currently supported.");
- }
-
- if (inode_size) {
- if (inode_size < EXT2_GOOD_OLD_INODE_SIZE ||
- inode_size > EXT2_BLOCK_SIZE(&param) ||
- inode_size & (inode_size - 1)) {
- bb_error_msg_and_die("invalid inode size %d (min %d/max %d)",
- inode_size, EXT2_GOOD_OLD_INODE_SIZE,
- blocksize);
- }
- mke2fs_warning_msg((inode_size != EXT2_GOOD_OLD_INODE_SIZE),
- "%d-byte inodes not usable on most systems",
- inode_size);
- param.s_inode_size = inode_size;
- }
-
- /*
- * Calculate number of inodes based on the inode ratio
- */
- param.s_inodes_count = num_inodes ? num_inodes :
- ((__u64) param.s_blocks_count * blocksize)
- / inode_ratio;
-
- /*
- * Calculate number of blocks to reserve
- */
- param.s_r_blocks_count = (param.s_blocks_count * reserved_ratio) / 100;
- return 1;
-}
-
-static void mke2fs_clean_up(void)
-{
- if (ENABLE_FEATURE_CLEAN_UP && journal_device) free(journal_device);
-}
-
-int mke2fs_main (int argc, char *argv[])
-{
- errcode_t retval;
- ext2_filsys fs;
- badblocks_list bb_list = 0;
- unsigned int i;
- int val;
- io_manager io_ptr;
-
- if (ENABLE_FEATURE_CLEAN_UP)
- atexit(mke2fs_clean_up);
- if(!PRS(argc, argv))
- return 0;
-
-#ifdef CONFIG_TESTIO_DEBUG
- io_ptr = test_io_manager;
- test_io_backing_manager = unix_io_manager;
-#else
- io_ptr = unix_io_manager;
-#endif
-
- /*
- * Initialize the superblock....
- */
- retval = ext2fs_initialize(device_name, 0, &param,
- io_ptr, &fs);
- mke2fs_error_msg_and_die(retval, "set up superblock");
-
- /*
- * Wipe out the old on-disk superblock
- */
- if (!noaction)
- zap_sector(fs, 2, 6);
-
- /*
- * Generate a UUID for it...
- */
- uuid_generate(fs->super->s_uuid);
-
- /*
- * Initialize the directory index variables
- */
- fs->super->s_def_hash_version = EXT2_HASH_TEA;
- uuid_generate((unsigned char *) fs->super->s_hash_seed);
-
- /*
- * Add "jitter" to the superblock's check interval so that we
- * don't check all the filesystems at the same time. We use a
- * kludgy hack of using the UUID to derive a random jitter value.
- */
- for (i = 0, val = 0 ; i < sizeof(fs->super->s_uuid); i++)
- val += fs->super->s_uuid[i];
- fs->super->s_max_mnt_count += val % EXT2_DFL_MAX_MNT_COUNT;
-
- /*
- * Override the creator OS, if applicable
- */
- if (creator_os && !set_os(fs->super, creator_os)) {
- bb_error_msg_and_die("unknown os - %s", creator_os);
- }
-
- /*
- * For the Hurd, we will turn off filetype since it doesn't
- * support it.
- */
- if (fs->super->s_creator_os == EXT2_OS_HURD)
- fs->super->s_feature_incompat &=
- ~EXT2_FEATURE_INCOMPAT_FILETYPE;
-
- /*
- * Set the volume label...
- */
- if (volume_label) {
- snprintf(fs->super->s_volume_name, sizeof(fs->super->s_volume_name), "%s", volume_label);
- }
-
- /*
- * Set the last mount directory
- */
- if (mount_dir) {
- snprintf(fs->super->s_last_mounted, sizeof(fs->super->s_last_mounted), "%s", mount_dir);
- }
-
- if (!quiet || noaction)
- show_stats(fs);
-
- if (noaction)
- return 0;
-
- if (fs->super->s_feature_incompat &
- EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
- create_journal_dev(fs);
- return (ext2fs_close(fs) ? 1 : 0);
- }
-
- if (bad_blocks_filename)
- read_bb_file(fs, &bb_list, bad_blocks_filename);
- if (cflag)
- test_disk(fs, &bb_list);
-
- handle_bad_blocks(fs, bb_list);
- fs->stride = fs_stride;
- retval = ext2fs_allocate_tables(fs);
- mke2fs_error_msg_and_die(retval, "allocate filesystem tables");
- if (super_only) {
- fs->super->s_state |= EXT2_ERROR_FS;
- fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY);
- } else {
- /* rsv must be a power of two (64kB is MD RAID sb alignment) */
- unsigned int rsv = 65536 / fs->blocksize;
- unsigned long blocks = fs->super->s_blocks_count;
- unsigned long start;
- blk_t ret_blk;
-
-#ifdef ZAP_BOOTBLOCK
- zap_sector(fs, 0, 2);
-#endif
-
- /*
- * Wipe out any old MD RAID (or other) metadata at the end
- * of the device. This will also verify that the device is
- * as large as we think. Be careful with very small devices.
- */
- start = (blocks & ~(rsv - 1));
- if (start > rsv)
- start -= rsv;
- if (start > 0)
- retval = zero_blocks(fs, start, blocks - start,
- NULL, &ret_blk, NULL);
-
- mke2fs_warning_msg(retval, "cannot zero block %u at end of filesystem", ret_blk);
- write_inode_tables(fs);
- create_root_dir(fs);
- create_lost_and_found(fs);
- reserve_inodes(fs);
- create_bad_block_inode(fs, bb_list);
- if (fs->super->s_feature_compat &
- EXT2_FEATURE_COMPAT_RESIZE_INODE) {
- retval = ext2fs_create_resize_inode(fs);
- mke2fs_error_msg_and_die(retval, "reserve blocks for online resize");
- }
- }
-
- if (journal_device) {
- make_journal_device(journal_device, fs, quiet, force);
- } else if (journal_size) {
- make_journal_blocks(fs, journal_size, journal_flags, quiet);
- }
-
- mke2fs_verbose("Writing superblocks and filesystem accounting information: ");
- retval = ext2fs_flush(fs);
- mke2fs_warning_msg(retval, "had trouble writing out superblocks");
- mke2fs_verbose_done();
- if (!quiet && !getenv("MKE2FS_SKIP_CHECK_MSG"))
- print_check_message(fs);
- val = ext2fs_close(fs);
- return (retval || val) ? 1 : 0;
-}