svn commit: r289376 - head/sbin/newfs_msdos
Ed Maste
emaste at FreeBSD.org
Thu Oct 15 19:00:35 UTC 2015
Author: emaste
Date: Thu Oct 15 19:00:33 2015
New Revision: 289376
URL: https://svnweb.freebsd.org/changeset/base/289376
Log:
newfs_msdos: move mkfs_msdos to separate file for later use in makefs
Sponsored by: The FreeBSD Foundation
Added:
head/sbin/newfs_msdos/mkfs_msdos.c (contents, props changed)
head/sbin/newfs_msdos/mkfs_msdos.h (contents, props changed)
Modified:
head/sbin/newfs_msdos/Makefile
head/sbin/newfs_msdos/newfs_msdos.c
Modified: head/sbin/newfs_msdos/Makefile
==============================================================================
--- head/sbin/newfs_msdos/Makefile Thu Oct 15 18:55:43 2015 (r289375)
+++ head/sbin/newfs_msdos/Makefile Thu Oct 15 19:00:33 2015 (r289376)
@@ -2,6 +2,7 @@
PROG= newfs_msdos
MAN= newfs_msdos.8
+SRCS= newfs_msdos.c mkfs_msdos.c
# XXX - this is verboten
.if ${MACHINE_CPUARCH} == "arm"
Added: head/sbin/newfs_msdos/mkfs_msdos.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sbin/newfs_msdos/mkfs_msdos.c Thu Oct 15 19:00:33 2015 (r289376)
@@ -0,0 +1,854 @@
+/*
+ * Copyright (c) 1998 Robert Nordier
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef lint
+static const char rcsid[] =
+ "$FreeBSD$";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/fdcio.h>
+#include <sys/disk.h>
+#include <sys/disklabel.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <paths.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "mkfs_msdos.h"
+
+#define MAXU16 0xffff /* maximum unsigned 16-bit quantity */
+#define BPN 4 /* bits per nibble */
+#define NPB 2 /* nibbles per byte */
+
+#define DOSMAGIC 0xaa55 /* DOS magic number */
+#define MINBPS 512 /* minimum bytes per sector */
+#define MAXSPC 128 /* maximum sectors per cluster */
+#define MAXNFT 16 /* maximum number of FATs */
+#define DEFBLK 4096 /* default block size */
+#define DEFBLK16 2048 /* default block size FAT16 */
+#define DEFRDE 512 /* default root directory entries */
+#define RESFTE 2 /* reserved FAT entries */
+#define MINCLS12 1U /* minimum FAT12 clusters */
+#define MINCLS16 0xff5U /* minimum FAT16 clusters */
+#define MINCLS32 0xfff5U /* minimum FAT32 clusters */
+#define MAXCLS12 0xff4U /* maximum FAT12 clusters */
+#define MAXCLS16 0xfff4U /* maximum FAT16 clusters */
+#define MAXCLS32 0xffffff4U /* maximum FAT32 clusters */
+
+#define mincls(fat) ((fat) == 12 ? MINCLS12 : \
+ (fat) == 16 ? MINCLS16 : \
+ MINCLS32)
+
+#define maxcls(fat) ((fat) == 12 ? MAXCLS12 : \
+ (fat) == 16 ? MAXCLS16 : \
+ MAXCLS32)
+
+#define mk1(p, x) \
+ (p) = (u_int8_t)(x)
+
+#define mk2(p, x) \
+ (p)[0] = (u_int8_t)(x), \
+ (p)[1] = (u_int8_t)((x) >> 010)
+
+#define mk4(p, x) \
+ (p)[0] = (u_int8_t)(x), \
+ (p)[1] = (u_int8_t)((x) >> 010), \
+ (p)[2] = (u_int8_t)((x) >> 020), \
+ (p)[3] = (u_int8_t)((x) >> 030)
+
+struct bs {
+ u_int8_t bsJump[3]; /* bootstrap entry point */
+ u_int8_t bsOemName[8]; /* OEM name and version */
+} __packed;
+
+struct bsbpb {
+ u_int8_t bpbBytesPerSec[2]; /* bytes per sector */
+ u_int8_t bpbSecPerClust; /* sectors per cluster */
+ u_int8_t bpbResSectors[2]; /* reserved sectors */
+ u_int8_t bpbFATs; /* number of FATs */
+ u_int8_t bpbRootDirEnts[2]; /* root directory entries */
+ u_int8_t bpbSectors[2]; /* total sectors */
+ u_int8_t bpbMedia; /* media descriptor */
+ u_int8_t bpbFATsecs[2]; /* sectors per FAT */
+ u_int8_t bpbSecPerTrack[2]; /* sectors per track */
+ u_int8_t bpbHeads[2]; /* drive heads */
+ u_int8_t bpbHiddenSecs[4]; /* hidden sectors */
+ u_int8_t bpbHugeSectors[4]; /* big total sectors */
+} __packed;
+
+struct bsxbpb {
+ u_int8_t bpbBigFATsecs[4]; /* big sectors per FAT */
+ u_int8_t bpbExtFlags[2]; /* FAT control flags */
+ u_int8_t bpbFSVers[2]; /* file system version */
+ u_int8_t bpbRootClust[4]; /* root directory start cluster */
+ u_int8_t bpbFSInfo[2]; /* file system info sector */
+ u_int8_t bpbBackup[2]; /* backup boot sector */
+ u_int8_t bpbReserved[12]; /* reserved */
+} __packed;
+
+struct bsx {
+ u_int8_t exDriveNumber; /* drive number */
+ u_int8_t exReserved1; /* reserved */
+ u_int8_t exBootSignature; /* extended boot signature */
+ u_int8_t exVolumeID[4]; /* volume ID number */
+ u_int8_t exVolumeLabel[11]; /* volume label */
+ u_int8_t exFileSysType[8]; /* file system type */
+} __packed;
+
+struct de {
+ u_int8_t deName[11]; /* name and extension */
+ u_int8_t deAttributes; /* attributes */
+ u_int8_t rsvd[10]; /* reserved */
+ u_int8_t deMTime[2]; /* last-modified time */
+ u_int8_t deMDate[2]; /* last-modified date */
+ u_int8_t deStartCluster[2]; /* starting cluster */
+ u_int8_t deFileSize[4]; /* size */
+} __packed;
+
+struct bpb {
+ u_int bpbBytesPerSec; /* bytes per sector */
+ u_int bpbSecPerClust; /* sectors per cluster */
+ u_int bpbResSectors; /* reserved sectors */
+ u_int bpbFATs; /* number of FATs */
+ u_int bpbRootDirEnts; /* root directory entries */
+ u_int bpbSectors; /* total sectors */
+ u_int bpbMedia; /* media descriptor */
+ u_int bpbFATsecs; /* sectors per FAT */
+ u_int bpbSecPerTrack; /* sectors per track */
+ u_int bpbHeads; /* drive heads */
+ u_int bpbHiddenSecs; /* hidden sectors */
+ u_int bpbHugeSectors; /* big total sectors */
+ u_int bpbBigFATsecs; /* big sectors per FAT */
+ u_int bpbRootClust; /* root directory start cluster */
+ u_int bpbFSInfo; /* file system info sector */
+ u_int bpbBackup; /* backup boot sector */
+};
+
+#define BPBGAP 0, 0, 0, 0, 0, 0
+
+static struct {
+ const char *name;
+ struct bpb bpb;
+} const stdfmt[] = {
+ {"160", {512, 1, 1, 2, 64, 320, 0xfe, 1, 8, 1, BPBGAP}},
+ {"180", {512, 1, 1, 2, 64, 360, 0xfc, 2, 9, 1, BPBGAP}},
+ {"320", {512, 2, 1, 2, 112, 640, 0xff, 1, 8, 2, BPBGAP}},
+ {"360", {512, 2, 1, 2, 112, 720, 0xfd, 2, 9, 2, BPBGAP}},
+ {"640", {512, 2, 1, 2, 112, 1280, 0xfb, 2, 8, 2, BPBGAP}},
+ {"720", {512, 2, 1, 2, 112, 1440, 0xf9, 3, 9, 2, BPBGAP}},
+ {"1200", {512, 1, 1, 2, 224, 2400, 0xf9, 7, 15, 2, BPBGAP}},
+ {"1232", {1024,1, 1, 2, 192, 1232, 0xfe, 2, 8, 2, BPBGAP}},
+ {"1440", {512, 1, 1, 2, 224, 2880, 0xf0, 9, 18, 2, BPBGAP}},
+ {"2880", {512, 2, 1, 2, 240, 5760, 0xf0, 9, 36, 2, BPBGAP}}
+};
+
+static const u_int8_t bootcode[] = {
+ 0xfa, /* cli */
+ 0x31, 0xc0, /* xor ax,ax */
+ 0x8e, 0xd0, /* mov ss,ax */
+ 0xbc, 0x00, 0x7c, /* mov sp,7c00h */
+ 0xfb, /* sti */
+ 0x8e, 0xd8, /* mov ds,ax */
+ 0xe8, 0x00, 0x00, /* call $ + 3 */
+ 0x5e, /* pop si */
+ 0x83, 0xc6, 0x19, /* add si,+19h */
+ 0xbb, 0x07, 0x00, /* mov bx,0007h */
+ 0xfc, /* cld */
+ 0xac, /* lodsb */
+ 0x84, 0xc0, /* test al,al */
+ 0x74, 0x06, /* jz $ + 8 */
+ 0xb4, 0x0e, /* mov ah,0eh */
+ 0xcd, 0x10, /* int 10h */
+ 0xeb, 0xf5, /* jmp $ - 9 */
+ 0x30, 0xe4, /* xor ah,ah */
+ 0xcd, 0x16, /* int 16h */
+ 0xcd, 0x19, /* int 19h */
+ 0x0d, 0x0a,
+ 'N', 'o', 'n', '-', 's', 'y', 's', 't',
+ 'e', 'm', ' ', 'd', 'i', 's', 'k',
+ 0x0d, 0x0a,
+ 'P', 'r', 'e', 's', 's', ' ', 'a', 'n',
+ 'y', ' ', 'k', 'e', 'y', ' ', 't', 'o',
+ ' ', 'r', 'e', 'b', 'o', 'o', 't',
+ 0x0d, 0x0a,
+ 0
+};
+
+static volatile sig_atomic_t got_siginfo;
+static void infohandler(int);
+
+static void check_mounted(const char *, mode_t);
+static void getstdfmt(const char *, struct bpb *);
+static void getdiskinfo(int, const char *, const char *, int,
+ struct bpb *);
+static void print_bpb(struct bpb *);
+static u_int ckgeom(const char *, u_int, const char *);
+static void mklabel(u_int8_t *, const char *);
+static int oklabel(const char *);
+static void setstr(u_int8_t *, const char *, size_t);
+
+int mkfs_msdos(const char *fname, const char *dtype,
+ const struct msdos_options *op)
+{
+ char buf[MAXPATHLEN];
+ struct sigaction si_sa;
+ struct stat sb;
+ struct timeval tv;
+ struct bpb bpb;
+ struct tm *tm;
+ struct bs *bs;
+ struct bsbpb *bsbpb;
+ struct bsxbpb *bsxbpb;
+ struct bsx *bsx;
+ struct de *de;
+ u_int8_t *img;
+ const char *bname;
+ ssize_t n;
+ time_t now;
+ u_int fat, bss, rds, cls, dir, lsn, x, x1, x2;
+ int fd, fd1;
+ struct msdos_options o = *op;
+
+ if (o.OEM_string && strlen(o.OEM_string) > 8) {
+ errx(1, "%s: bad OEM string", o.OEM_string);
+ }
+ if (o.create_size) {
+ if (o.no_create)
+ errx(1, "create (-C) is incompatible with -N");
+ fd = open(fname, O_RDWR | O_CREAT | O_TRUNC, 0644);
+ if (fd == -1)
+ errx(1, "failed to create %s", fname);
+ if (ftruncate(fd, o.create_size))
+ errx(1, "failed to initialize %jd bytes", (intmax_t)o.create_size);
+ } else if ((fd = open(fname, o.no_create ? O_RDONLY : O_RDWR)) == -1)
+ err(1, "%s", fname);
+ if (fstat(fd, &sb))
+ err(1, "%s", fname);
+ if (o.create_size) {
+ if (!S_ISREG(sb.st_mode))
+ warnx("warning, %s is not a regular file", fname);
+ } else {
+ if (!S_ISCHR(sb.st_mode))
+ warnx("warning, %s is not a character device", fname);
+ }
+ if (!o.no_create)
+ check_mounted(fname, sb.st_mode);
+ if (o.offset && o.offset != lseek(fd, o.offset, SEEK_SET))
+ errx(1, "cannot seek to %jd", (intmax_t)o.offset);
+ memset(&bpb, 0, sizeof(bpb));
+ if (o.floppy) {
+ getstdfmt(o.floppy, &bpb);
+ bpb.bpbHugeSectors = bpb.bpbSectors;
+ bpb.bpbSectors = 0;
+ bpb.bpbBigFATsecs = bpb.bpbFATsecs;
+ bpb.bpbFATsecs = 0;
+ }
+ if (o.drive_heads)
+ bpb.bpbHeads = o.drive_heads;
+ if (o.sectors_per_track)
+ bpb.bpbSecPerTrack = o.sectors_per_track;
+ if (o.bytes_per_sector)
+ bpb.bpbBytesPerSec = o.bytes_per_sector;
+ if (o.size)
+ bpb.bpbHugeSectors = o.size;
+ if (o.hidden_sectors_set)
+ bpb.bpbHiddenSecs = o.hidden_sectors;
+ if (!(o.floppy || (o.drive_heads && o.sectors_per_track && o.bytes_per_sector && o.size && o.hidden_sectors_set))) {
+ off_t delta;
+ getdiskinfo(fd, fname, dtype, o.hidden_sectors_set, &bpb);
+ bpb.bpbHugeSectors -= (o.offset / bpb.bpbBytesPerSec);
+ delta = bpb.bpbHugeSectors % bpb.bpbSecPerTrack;
+ if (delta != 0) {
+ warnx("trim %d sectors to adjust to a multiple of %d",
+ (int)delta, bpb.bpbSecPerTrack);
+ bpb.bpbHugeSectors -= delta;
+ }
+ if (bpb.bpbSecPerClust == 0) { /* set defaults */
+ if (bpb.bpbHugeSectors <= 6000) /* about 3MB -> 512 bytes */
+ bpb.bpbSecPerClust = 1;
+ else if (bpb.bpbHugeSectors <= (1<<17)) /* 64M -> 4k */
+ bpb.bpbSecPerClust = 8;
+ else if (bpb.bpbHugeSectors <= (1<<19)) /* 256M -> 8k */
+ bpb.bpbSecPerClust = 16;
+ else if (bpb.bpbHugeSectors <= (1<<21)) /* 1G -> 16k */
+ bpb.bpbSecPerClust = 32;
+ else
+ bpb.bpbSecPerClust = 64; /* otherwise 32k */
+ }
+ }
+ if (!powerof2(bpb.bpbBytesPerSec))
+ errx(1, "bytes/sector (%u) is not a power of 2", bpb.bpbBytesPerSec);
+ if (bpb.bpbBytesPerSec < MINBPS)
+ errx(1, "bytes/sector (%u) is too small; minimum is %u",
+ bpb.bpbBytesPerSec, MINBPS);
+ if (o.volume_label && !oklabel(o.volume_label))
+ errx(1, "%s: bad volume label", o.volume_label);
+ if (!(fat = o.fat_type)) {
+ if (o.floppy)
+ fat = 12;
+ else if (!o.directory_entries && (o.info_sector || o.backup_sector))
+ fat = 32;
+ }
+ if ((fat == 32 && o.directory_entries) || (fat != 32 && (o.info_sector || o.backup_sector)))
+ errx(1, "-%c is not a legal FAT%s option",
+ fat == 32 ? 'e' : o.info_sector ? 'i' : 'k',
+ fat == 32 ? "32" : "12/16");
+ if (o.floppy && fat == 32)
+ bpb.bpbRootDirEnts = 0;
+ if (fat != 0 && fat != 12 && fat != 16 && fat != 32) {
+ errx(1, "%d: bad FAT type", fat);
+ }
+
+ if (o.block_size) {
+ if (!powerof2(o.block_size))
+ errx(1, "block size (%u) is not a power of 2", o.block_size);
+ if (o.block_size < bpb.bpbBytesPerSec)
+ errx(1, "block size (%u) is too small; minimum is %u",
+ o.block_size, bpb.bpbBytesPerSec);
+ if (o.block_size > bpb.bpbBytesPerSec * MAXSPC)
+ errx(1, "block size (%u) is too large; maximum is %u",
+ o.block_size, bpb.bpbBytesPerSec * MAXSPC);
+ bpb.bpbSecPerClust = o.block_size / bpb.bpbBytesPerSec;
+ }
+ if (o.sectors_per_cluster) {
+ if (!powerof2(o.sectors_per_cluster))
+ errx(1, "sectors/cluster (%u) is not a power of 2", o.sectors_per_cluster);
+ bpb.bpbSecPerClust = o.sectors_per_cluster;
+ }
+ if (o.reserved_sectors)
+ bpb.bpbResSectors = o.reserved_sectors;
+ if (o.num_FAT) {
+ if (o.num_FAT > MAXNFT)
+ errx(1, "number of FATs (%u) is too large; maximum is %u",
+ o.num_FAT, MAXNFT);
+ bpb.bpbFATs = o.num_FAT;
+ }
+ if (o.directory_entries)
+ bpb.bpbRootDirEnts = o.directory_entries;
+ if (o.media_descriptor_set) {
+ if (o.media_descriptor < 0xf0)
+ errx(1, "illegal media descriptor (%#x)", o.media_descriptor);
+ bpb.bpbMedia = o.media_descriptor;
+ }
+ if (o.sectors_per_fat)
+ bpb.bpbBigFATsecs = o.sectors_per_fat;
+ if (o.info_sector)
+ bpb.bpbFSInfo = o.info_sector;
+ if (o.backup_sector)
+ bpb.bpbBackup = o.backup_sector;
+ bss = 1;
+ bname = NULL;
+ fd1 = -1;
+ if (o.bootstrap) {
+ bname = o.bootstrap;
+ if (!strchr(bname, '/')) {
+ snprintf(buf, sizeof(buf), "/boot/%s", bname);
+ if (!(bname = strdup(buf)))
+ err(1, NULL);
+ }
+ if ((fd1 = open(bname, O_RDONLY)) == -1 || fstat(fd1, &sb))
+ err(1, "%s", bname);
+ if (!S_ISREG(sb.st_mode) || sb.st_size % bpb.bpbBytesPerSec ||
+ sb.st_size < bpb.bpbBytesPerSec ||
+ sb.st_size > bpb.bpbBytesPerSec * MAXU16)
+ errx(1, "%s: inappropriate file type or format", bname);
+ bss = sb.st_size / bpb.bpbBytesPerSec;
+ }
+ if (!bpb.bpbFATs)
+ bpb.bpbFATs = 2;
+ if (!fat) {
+ if (bpb.bpbHugeSectors < (bpb.bpbResSectors ? bpb.bpbResSectors : bss) +
+ howmany((RESFTE + (bpb.bpbSecPerClust ? MINCLS16 : MAXCLS12 + 1)) *
+ (bpb.bpbSecPerClust ? 16 : 12) / BPN,
+ bpb.bpbBytesPerSec * NPB) *
+ bpb.bpbFATs +
+ howmany(bpb.bpbRootDirEnts ? bpb.bpbRootDirEnts : DEFRDE,
+ bpb.bpbBytesPerSec / sizeof(struct de)) +
+ (bpb.bpbSecPerClust ? MINCLS16 : MAXCLS12 + 1) *
+ (bpb.bpbSecPerClust ? bpb.bpbSecPerClust :
+ howmany(DEFBLK, bpb.bpbBytesPerSec)))
+ fat = 12;
+ else if (bpb.bpbRootDirEnts || bpb.bpbHugeSectors <
+ (bpb.bpbResSectors ? bpb.bpbResSectors : bss) +
+ howmany((RESFTE + MAXCLS16) * 2, bpb.bpbBytesPerSec) *
+ bpb.bpbFATs +
+ howmany(DEFRDE, bpb.bpbBytesPerSec / sizeof(struct de)) +
+ (MAXCLS16 + 1) *
+ (bpb.bpbSecPerClust ? bpb.bpbSecPerClust :
+ howmany(8192, bpb.bpbBytesPerSec)))
+ fat = 16;
+ else
+ fat = 32;
+ }
+ x = bss;
+ if (fat == 32) {
+ if (!bpb.bpbFSInfo) {
+ if (x == MAXU16 || x == bpb.bpbBackup)
+ errx(1, "no room for info sector");
+ bpb.bpbFSInfo = x;
+ }
+ if (bpb.bpbFSInfo != MAXU16 && x <= bpb.bpbFSInfo)
+ x = bpb.bpbFSInfo + 1;
+ if (!bpb.bpbBackup) {
+ if (x == MAXU16)
+ errx(1, "no room for backup sector");
+ bpb.bpbBackup = x;
+ } else if (bpb.bpbBackup != MAXU16 && bpb.bpbBackup == bpb.bpbFSInfo)
+ errx(1, "backup sector would overwrite info sector");
+ if (bpb.bpbBackup != MAXU16 && x <= bpb.bpbBackup)
+ x = bpb.bpbBackup + 1;
+ }
+ if (!bpb.bpbResSectors)
+ bpb.bpbResSectors = fat == 32 ?
+ MAX(x, MAX(16384 / bpb.bpbBytesPerSec, 4)) : x;
+ else if (bpb.bpbResSectors < x)
+ errx(1, "too few reserved sectors (need %d have %d)", x,
+ bpb.bpbResSectors);
+ if (fat != 32 && !bpb.bpbRootDirEnts)
+ bpb.bpbRootDirEnts = DEFRDE;
+ rds = howmany(bpb.bpbRootDirEnts, bpb.bpbBytesPerSec / sizeof(struct de));
+ if (!bpb.bpbSecPerClust)
+ for (bpb.bpbSecPerClust = howmany(fat == 16 ? DEFBLK16 :
+ DEFBLK, bpb.bpbBytesPerSec);
+ bpb.bpbSecPerClust < MAXSPC &&
+ bpb.bpbResSectors +
+ howmany((RESFTE + maxcls(fat)) * (fat / BPN),
+ bpb.bpbBytesPerSec * NPB) *
+ bpb.bpbFATs +
+ rds +
+ (u_int64_t) (maxcls(fat) + 1) *
+ bpb.bpbSecPerClust <= bpb.bpbHugeSectors;
+ bpb.bpbSecPerClust <<= 1)
+ continue;
+ if (fat != 32 && bpb.bpbBigFATsecs > MAXU16)
+ errx(1, "too many sectors/FAT for FAT12/16");
+ x1 = bpb.bpbResSectors + rds;
+ x = bpb.bpbBigFATsecs ? bpb.bpbBigFATsecs : 1;
+ if (x1 + (u_int64_t)x * bpb.bpbFATs > bpb.bpbHugeSectors)
+ errx(1, "meta data exceeds file system size");
+ x1 += x * bpb.bpbFATs;
+ x = (u_int64_t)(bpb.bpbHugeSectors - x1) * bpb.bpbBytesPerSec * NPB /
+ (bpb.bpbSecPerClust * bpb.bpbBytesPerSec * NPB + fat /
+ BPN * bpb.bpbFATs);
+ x2 = howmany((RESFTE + MIN(x, maxcls(fat))) * (fat / BPN),
+ bpb.bpbBytesPerSec * NPB);
+ if (!bpb.bpbBigFATsecs) {
+ bpb.bpbBigFATsecs = x2;
+ x1 += (bpb.bpbBigFATsecs - 1) * bpb.bpbFATs;
+ }
+ cls = (bpb.bpbHugeSectors - x1) / bpb.bpbSecPerClust;
+ x = (u_int64_t)bpb.bpbBigFATsecs * bpb.bpbBytesPerSec * NPB / (fat / BPN) -
+ RESFTE;
+ if (cls > x)
+ cls = x;
+ if (bpb.bpbBigFATsecs < x2)
+ warnx("warning: sectors/FAT limits file system to %u clusters",
+ cls);
+ if (cls < mincls(fat))
+ errx(1, "%u clusters too few clusters for FAT%u, need %u", cls, fat,
+ mincls(fat));
+ if (cls > maxcls(fat)) {
+ cls = maxcls(fat);
+ bpb.bpbHugeSectors = x1 + (cls + 1) * bpb.bpbSecPerClust - 1;
+ warnx("warning: FAT type limits file system to %u sectors",
+ bpb.bpbHugeSectors);
+ }
+ printf("%s: %u sector%s in %u FAT%u cluster%s "
+ "(%u bytes/cluster)\n", fname, cls * bpb.bpbSecPerClust,
+ cls * bpb.bpbSecPerClust == 1 ? "" : "s", cls, fat,
+ cls == 1 ? "" : "s", bpb.bpbBytesPerSec * bpb.bpbSecPerClust);
+ if (!bpb.bpbMedia)
+ bpb.bpbMedia = !bpb.bpbHiddenSecs ? 0xf0 : 0xf8;
+ if (fat == 32)
+ bpb.bpbRootClust = RESFTE;
+ if (bpb.bpbHiddenSecs + bpb.bpbHugeSectors <= MAXU16) {
+ bpb.bpbSectors = bpb.bpbHugeSectors;
+ bpb.bpbHugeSectors = 0;
+ }
+ if (fat != 32) {
+ bpb.bpbFATsecs = bpb.bpbBigFATsecs;
+ bpb.bpbBigFATsecs = 0;
+ }
+ print_bpb(&bpb);
+ if (!o.no_create) {
+ gettimeofday(&tv, NULL);
+ now = tv.tv_sec;
+ tm = localtime(&now);
+ if (!(img = malloc(bpb.bpbBytesPerSec)))
+ err(1, NULL);
+ dir = bpb.bpbResSectors + (bpb.bpbFATsecs ? bpb.bpbFATsecs :
+ bpb.bpbBigFATsecs) * bpb.bpbFATs;
+ memset(&si_sa, 0, sizeof(si_sa));
+ si_sa.sa_handler = infohandler;
+ if (sigaction(SIGINFO, &si_sa, NULL) == -1)
+ err(1, "sigaction SIGINFO");
+ for (lsn = 0; lsn < dir + (fat == 32 ? bpb.bpbSecPerClust : rds); lsn++) {
+ if (got_siginfo) {
+ fprintf(stderr,"%s: writing sector %u of %u (%u%%)\n",
+ fname, lsn,
+ (dir + (fat == 32 ? bpb.bpbSecPerClust: rds)),
+ (lsn * 100) / (dir +
+ (fat == 32 ? bpb.bpbSecPerClust: rds)));
+ got_siginfo = 0;
+ }
+ x = lsn;
+ if (o.bootstrap &&
+ fat == 32 && bpb.bpbBackup != MAXU16 &&
+ bss <= bpb.bpbBackup && x >= bpb.bpbBackup) {
+ x -= bpb.bpbBackup;
+ if (!x && lseek(fd1, o.offset, SEEK_SET))
+ err(1, "%s", bname);
+ }
+ if (o.bootstrap && x < bss) {
+ if ((n = read(fd1, img, bpb.bpbBytesPerSec)) == -1)
+ err(1, "%s", bname);
+ if ((unsigned)n != bpb.bpbBytesPerSec)
+ errx(1, "%s: can't read sector %u", bname, x);
+ } else
+ memset(img, 0, bpb.bpbBytesPerSec);
+ if (!lsn ||
+ (fat == 32 && bpb.bpbBackup != MAXU16 &&
+ lsn == bpb.bpbBackup)) {
+ x1 = sizeof(struct bs);
+ bsbpb = (struct bsbpb *)(img + x1);
+ mk2(bsbpb->bpbBytesPerSec, bpb.bpbBytesPerSec);
+ mk1(bsbpb->bpbSecPerClust, bpb.bpbSecPerClust);
+ mk2(bsbpb->bpbResSectors, bpb.bpbResSectors);
+ mk1(bsbpb->bpbFATs, bpb.bpbFATs);
+ mk2(bsbpb->bpbRootDirEnts, bpb.bpbRootDirEnts);
+ mk2(bsbpb->bpbSectors, bpb.bpbSectors);
+ mk1(bsbpb->bpbMedia, bpb.bpbMedia);
+ mk2(bsbpb->bpbFATsecs, bpb.bpbFATsecs);
+ mk2(bsbpb->bpbSecPerTrack, bpb.bpbSecPerTrack);
+ mk2(bsbpb->bpbHeads, bpb.bpbHeads);
+ mk4(bsbpb->bpbHiddenSecs, bpb.bpbHiddenSecs);
+ mk4(bsbpb->bpbHugeSectors, bpb.bpbHugeSectors);
+ x1 += sizeof(struct bsbpb);
+ if (fat == 32) {
+ bsxbpb = (struct bsxbpb *)(img + x1);
+ mk4(bsxbpb->bpbBigFATsecs, bpb.bpbBigFATsecs);
+ mk2(bsxbpb->bpbExtFlags, 0);
+ mk2(bsxbpb->bpbFSVers, 0);
+ mk4(bsxbpb->bpbRootClust, bpb.bpbRootClust);
+ mk2(bsxbpb->bpbFSInfo, bpb.bpbFSInfo);
+ mk2(bsxbpb->bpbBackup, bpb.bpbBackup);
+ x1 += sizeof(struct bsxbpb);
+ }
+ bsx = (struct bsx *)(img + x1);
+ mk1(bsx->exBootSignature, 0x29);
+ if (o.volume_id_set)
+ x = o.volume_id;
+ else
+ x = (((u_int)(1 + tm->tm_mon) << 8 |
+ (u_int)tm->tm_mday) +
+ ((u_int)tm->tm_sec << 8 |
+ (u_int)(tv.tv_usec / 10))) << 16 |
+ ((u_int)(1900 + tm->tm_year) +
+ ((u_int)tm->tm_hour << 8 |
+ (u_int)tm->tm_min));
+ mk4(bsx->exVolumeID, x);
+ mklabel(bsx->exVolumeLabel, o.volume_label ? o.volume_label : "NO NAME");
+ sprintf(buf, "FAT%u", fat);
+ setstr(bsx->exFileSysType, buf, sizeof(bsx->exFileSysType));
+ if (!o.bootstrap) {
+ x1 += sizeof(struct bsx);
+ bs = (struct bs *)img;
+ mk1(bs->bsJump[0], 0xeb);
+ mk1(bs->bsJump[1], x1 - 2);
+ mk1(bs->bsJump[2], 0x90);
+ setstr(bs->bsOemName, o.OEM_string ? o.OEM_string : "BSD4.4 ",
+ sizeof(bs->bsOemName));
+ memcpy(img + x1, bootcode, sizeof(bootcode));
+ mk2(img + MINBPS - 2, DOSMAGIC);
+ }
+ } else if (fat == 32 && bpb.bpbFSInfo != MAXU16 &&
+ (lsn == bpb.bpbFSInfo ||
+ (bpb.bpbBackup != MAXU16 &&
+ lsn == bpb.bpbBackup + bpb.bpbFSInfo))) {
+ mk4(img, 0x41615252);
+ mk4(img + MINBPS - 28, 0x61417272);
+ mk4(img + MINBPS - 24, 0xffffffff);
+ mk4(img + MINBPS - 20, bpb.bpbRootClust);
+ mk2(img + MINBPS - 2, DOSMAGIC);
+ } else if (lsn >= bpb.bpbResSectors && lsn < dir &&
+ !((lsn - bpb.bpbResSectors) %
+ (bpb.bpbFATsecs ? bpb.bpbFATsecs :
+ bpb.bpbBigFATsecs))) {
+ mk1(img[0], bpb.bpbMedia);
+ for (x = 1; x < fat * (fat == 32 ? 3 : 2) / 8; x++)
+ mk1(img[x], fat == 32 && x % 4 == 3 ? 0x0f : 0xff);
+ } else if (lsn == dir && o.volume_label) {
+ de = (struct de *)img;
+ mklabel(de->deName, o.volume_label);
+ mk1(de->deAttributes, 050);
+ x = (u_int)tm->tm_hour << 11 |
+ (u_int)tm->tm_min << 5 |
+ (u_int)tm->tm_sec >> 1;
+ mk2(de->deMTime, x);
+ x = (u_int)(tm->tm_year - 80) << 9 |
+ (u_int)(tm->tm_mon + 1) << 5 |
+ (u_int)tm->tm_mday;
+ mk2(de->deMDate, x);
+ }
+ if ((n = write(fd, img, bpb.bpbBytesPerSec)) == -1)
+ err(1, "%s", fname);
+ if ((unsigned)n != bpb.bpbBytesPerSec)
+ errx(1, "%s: can't write sector %u", fname, lsn);
+ }
+ }
+ return 0;
+}
+
+/*
+ * Exit with error if file system is mounted.
+ */
+static void
+check_mounted(const char *fname, mode_t mode)
+{
+ struct statfs *mp;
+ const char *s1, *s2;
+ size_t len;
+ int n, r;
+
+ if (!(n = getmntinfo(&mp, MNT_NOWAIT)))
+ err(1, "getmntinfo");
+ len = strlen(_PATH_DEV);
+ s1 = fname;
+ if (!strncmp(s1, _PATH_DEV, len))
+ s1 += len;
+ r = S_ISCHR(mode) && s1 != fname && *s1 == 'r';
+ for (; n--; mp++) {
+ s2 = mp->f_mntfromname;
+ if (!strncmp(s2, _PATH_DEV, len))
+ s2 += len;
+ if ((r && s2 != mp->f_mntfromname && !strcmp(s1 + 1, s2)) ||
+ !strcmp(s1, s2))
+ errx(1, "%s is mounted on %s", fname, mp->f_mntonname);
+ }
+}
+
+/*
+ * Get a standard format.
+ */
+static void
+getstdfmt(const char *fmt, struct bpb *bpb)
+{
+ u_int x, i;
+
+ x = sizeof(stdfmt) / sizeof(stdfmt[0]);
+ for (i = 0; i < x && strcmp(fmt, stdfmt[i].name); i++);
+ if (i == x)
+ errx(1, "%s: unknown standard format", fmt);
+ *bpb = stdfmt[i].bpb;
+}
+
+/*
+ * Get disk slice, partition, and geometry information.
+ */
+static void
+getdiskinfo(int fd, const char *fname, const char *dtype, __unused int oflag,
+ struct bpb *bpb)
+{
+ struct disklabel *lp, dlp;
+ struct fd_type type;
+ off_t ms, hs = 0;
+
+ lp = NULL;
+
+ /* If the user specified a disk type, try to use that */
+ if (dtype != NULL) {
+ lp = getdiskbyname(dtype);
+ }
+
+ /* Maybe it's a floppy drive */
+ if (lp == NULL) {
+ if (ioctl(fd, DIOCGMEDIASIZE, &ms) == -1) {
+ struct stat st;
+
+ if (fstat(fd, &st))
+ err(1, "cannot get disk size");
+ /* create a fake geometry for a file image */
+ ms = st.st_size;
+ dlp.d_secsize = 512;
+ dlp.d_nsectors = 63;
+ dlp.d_ntracks = 255;
+ dlp.d_secperunit = ms / dlp.d_secsize;
+ lp = &dlp;
+ } else if (ioctl(fd, FD_GTYPE, &type) != -1) {
+ dlp.d_secsize = 128 << type.secsize;
+ dlp.d_nsectors = type.sectrac;
+ dlp.d_ntracks = type.heads;
+ dlp.d_secperunit = ms / dlp.d_secsize;
+ lp = &dlp;
+ }
+ }
+
+ /* Maybe it's a fixed drive */
+ if (lp == NULL) {
+ if (bpb->bpbBytesPerSec)
+ dlp.d_secsize = bpb->bpbBytesPerSec;
+ if (bpb->bpbBytesPerSec == 0 && ioctl(fd, DIOCGSECTORSIZE,
+ &dlp.d_secsize) == -1)
+ err(1, "cannot get sector size");
+
+ dlp.d_secperunit = ms / dlp.d_secsize;
+
+ if (bpb->bpbSecPerTrack == 0 && ioctl(fd, DIOCGFWSECTORS,
+ &dlp.d_nsectors) == -1) {
+ warn("cannot get number of sectors per track");
+ dlp.d_nsectors = 63;
+ }
+ if (bpb->bpbHeads == 0 &&
+ ioctl(fd, DIOCGFWHEADS, &dlp.d_ntracks) == -1) {
+ warn("cannot get number of heads");
+ if (dlp.d_secperunit <= 63*1*1024)
+ dlp.d_ntracks = 1;
+ else if (dlp.d_secperunit <= 63*16*1024)
+ dlp.d_ntracks = 16;
+ else
+ dlp.d_ntracks = 255;
+ }
+
+ hs = (ms / dlp.d_secsize) - dlp.d_secperunit;
+ lp = &dlp;
+ }
+
+ if (bpb->bpbBytesPerSec == 0)
+ bpb->bpbBytesPerSec = ckgeom(fname, lp->d_secsize, "bytes/sector");
+ if (bpb->bpbSecPerTrack == 0)
+ bpb->bpbSecPerTrack = ckgeom(fname, lp->d_nsectors, "sectors/track");
+ if (bpb->bpbHeads == 0)
+ bpb->bpbHeads = ckgeom(fname, lp->d_ntracks, "drive heads");
+ if (bpb->bpbHugeSectors == 0)
+ bpb->bpbHugeSectors = lp->d_secperunit;
+ if (bpb->bpbHiddenSecs == 0)
+ bpb->bpbHiddenSecs = hs;
+}
+
+/*
+ * Print out BPB values.
+ */
+static void
+print_bpb(struct bpb *bpb)
+{
+ printf("BytesPerSec=%u SecPerClust=%u ResSectors=%u FATs=%u",
+ bpb->bpbBytesPerSec, bpb->bpbSecPerClust, bpb->bpbResSectors,
+ bpb->bpbFATs);
+ if (bpb->bpbRootDirEnts)
+ printf(" RootDirEnts=%u", bpb->bpbRootDirEnts);
+ if (bpb->bpbSectors)
+ printf(" Sectors=%u", bpb->bpbSectors);
+ printf(" Media=%#x", bpb->bpbMedia);
+ if (bpb->bpbFATsecs)
+ printf(" FATsecs=%u", bpb->bpbFATsecs);
+ printf(" SecPerTrack=%u Heads=%u HiddenSecs=%u", bpb->bpbSecPerTrack,
+ bpb->bpbHeads, bpb->bpbHiddenSecs);
+ if (bpb->bpbHugeSectors)
+ printf(" HugeSectors=%u", bpb->bpbHugeSectors);
+ if (!bpb->bpbFATsecs) {
+ printf(" FATsecs=%u RootCluster=%u", bpb->bpbBigFATsecs,
+ bpb->bpbRootClust);
+ printf(" FSInfo=");
+ printf(bpb->bpbFSInfo == MAXU16 ? "%#x" : "%u", bpb->bpbFSInfo);
+ printf(" Backup=");
+ printf(bpb->bpbBackup == MAXU16 ? "%#x" : "%u", bpb->bpbBackup);
+ }
+ printf("\n");
+}
+
+/*
+ * Check a disk geometry value.
+ */
+static u_int
+ckgeom(const char *fname, u_int val, const char *msg)
+{
+ if (!val)
+ errx(1, "%s: no default %s", fname, msg);
+ if (val > MAXU16)
+ errx(1, "%s: illegal %s %d", fname, msg, val);
+ return val;
+}
+
+/*
+ * Check a volume label.
+ */
+static int
+oklabel(const char *src)
+{
+ int c, i;
+
+ for (i = 0; i <= 11; i++) {
+ c = (u_char)*src++;
+ if (c < ' ' + !i || strchr("\"*+,./:;<=>?[\\]|", c))
+ break;
+ }
+ return i && !c;
+}
+
+/*
+ * Make a volume label.
+ */
+static void
+mklabel(u_int8_t *dest, const char *src)
+{
+ int c, i;
+
+ for (i = 0; i < 11; i++) {
+ c = *src ? toupper(*src++) : ' ';
+ *dest++ = !i && c == '\xe5' ? 5 : c;
+ }
+}
+
+/*
+ * Copy string, padding with spaces.
+ */
+static void
+setstr(u_int8_t *dest, const char *src, size_t len)
+{
+ while (len--)
+ *dest++ = *src ? *src++ : ' ';
+}
+
+static void
+infohandler(int sig __unused)
+{
+
+ got_siginfo = 1;
+}
Added: head/sbin/newfs_msdos/mkfs_msdos.h
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sbin/newfs_msdos/mkfs_msdos.h Thu Oct 15 19:00:33 2015 (r289376)
@@ -0,0 +1,61 @@
+/*-
+ * Copyright (c) 2015 The FreeBSD Foundation
+ * All rights reserved.
+ *
+ * This software was developed by Ed Maste under sponsorship from
+ * the FreeBSD Foundation.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+struct msdos_options {
+ const char *bootstrap;
+ const char *volume_label;
+ const char *OEM_string;
+ const char *floppy;
+ u_int fat_type;
+ u_int volume_id;
+ u_int bytes_per_sector;
+ u_int sectors_per_fat;
+ u_int block_size;
+ u_int sectors_per_cluster;
+ u_int directory_entries;
+ u_int drive_heads;
+ u_int info_sector;
+ u_int backup_sector;
+ u_int media_descriptor;
+ u_int num_FAT;
+ u_int hidden_sectors;
+ u_int reserved_sectors;
+ u_int size;
+ u_int sectors_per_track;
+ int no_create;
+ off_t create_size;
+ off_t offset;
+ int volume_id_set;
+ int media_descriptor_set;
+ int hidden_sectors_set;
+};
+
+int mkfs_msdos(const char *, const char *, const struct msdos_options *);
Modified: head/sbin/newfs_msdos/newfs_msdos.c
==============================================================================
--- head/sbin/newfs_msdos/newfs_msdos.c Thu Oct 15 18:55:43 2015 (r289375)
+++ head/sbin/newfs_msdos/newfs_msdos.c Thu Oct 15 19:00:33 2015 (r289376)
@@ -31,233 +31,24 @@ static const char rcsid[] =
#endif /* not lint */
#include <sys/param.h>
-#include <sys/fdcio.h>
-#include <sys/disk.h>
-#include <sys/disklabel.h>
-#include <sys/mount.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-#include <ctype.h>
#include <err.h>
#include <errno.h>
-#include <fcntl.h>
-#include <inttypes.h>
#include <paths.h>
-#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <time.h>
#include <unistd.h>
-#define MAXU16 0xffff /* maximum unsigned 16-bit quantity */
-#define BPN 4 /* bits per nibble */
-#define NPB 2 /* nibbles per byte */
-
-#define DOSMAGIC 0xaa55 /* DOS magic number */
-#define MINBPS 512 /* minimum bytes per sector */
-#define MAXSPC 128 /* maximum sectors per cluster */
-#define MAXNFT 16 /* maximum number of FATs */
-#define DEFBLK 4096 /* default block size */
-#define DEFBLK16 2048 /* default block size FAT16 */
-#define DEFRDE 512 /* default root directory entries */
-#define RESFTE 2 /* reserved FAT entries */
-#define MINCLS12 1U /* minimum FAT12 clusters */
-#define MINCLS16 0xff5U /* minimum FAT16 clusters */
-#define MINCLS32 0xfff5U /* minimum FAT32 clusters */
-#define MAXCLS12 0xff4U /* maximum FAT12 clusters */
-#define MAXCLS16 0xfff4U /* maximum FAT16 clusters */
-#define MAXCLS32 0xffffff4U /* maximum FAT32 clusters */
-
-#define mincls(fat) ((fat) == 12 ? MINCLS12 : \
- (fat) == 16 ? MINCLS16 : \
- MINCLS32)
-
-#define maxcls(fat) ((fat) == 12 ? MAXCLS12 : \
- (fat) == 16 ? MAXCLS16 : \
- MAXCLS32)
-
-#define mk1(p, x) \
- (p) = (u_int8_t)(x)
-
-#define mk2(p, x) \
- (p)[0] = (u_int8_t)(x), \
- (p)[1] = (u_int8_t)((x) >> 010)
-
-#define mk4(p, x) \
- (p)[0] = (u_int8_t)(x), \
- (p)[1] = (u_int8_t)((x) >> 010), \
- (p)[2] = (u_int8_t)((x) >> 020), \
- (p)[3] = (u_int8_t)((x) >> 030)
+#include "mkfs_msdos.h"
#define argto1(arg, lo, msg) argtou(arg, lo, 0xff, msg)
#define argto2(arg, lo, msg) argtou(arg, lo, 0xffff, msg)
*** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
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