diff options
Diffstat (limited to 'e2fsprogs/mke2fs.c')
| -rw-r--r-- | e2fsprogs/mke2fs.c | 1336 |
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(¶m, 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, - ¶m.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(¶m), - &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(¶m)) - param.s_blocks_count &= ~((sys_page_size / - EXT2_BLOCK_SIZE(¶m))-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, §or_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, ¶m, blocksize, sector_size, &inode_ratio); - blocksize = EXT2_BLOCK_SIZE(¶m); - - if (extended_opts) - parse_extended_opts(¶m, 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(¶m) || - 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, ¶m, - 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; -} |