toolbox: mkdosfs: Imported new 'newfs_msdos' updated disk formatter
Signed-off-by: San Mehat <san@google.com>
This commit is contained in:
San Mehat
parent
eefef3234a
commit
72eead43c7
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@ -42,7 +42,7 @@ TOOLS := \
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smd \
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chmod \
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chown \
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mkdosfs \
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newfs_msdos \
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netstat \
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ioctl \
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mv \
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@ -1,5 +1,3 @@
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/* $NetBSD: newfs_msdos.c,v 1.18.2.1 2005/05/01 18:44:02 tron Exp $ */
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/*
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* Copyright (c) 1998 Robert Nordier
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* All rights reserved.
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@ -27,41 +25,45 @@
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#define __USE_FILE_OFFSET64
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#ifndef lint
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static const char rcsid[] =
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"$FreeBSD: src/sbin/newfs_msdos/newfs_msdos.c,v 1.33 2009/04/11 14:56:29 ed Exp $";
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#endif /* not lint */
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#include <sys/param.h>
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#ifdef __FreeBSD__
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#include <sys/diskslice.h>
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#ifndef ANDROID
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#include <sys/fdcio.h>
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#include <sys/disk.h>
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#include <sys/disklabel.h>
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#include <sys/mount.h>
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#else
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#include <stdarg.h>
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#include <linux/fs.h>
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#include <linux/hdreg.h>
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#endif
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#include <sys/mount.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/ioctl.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <inttypes.h>
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#include <paths.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#ifdef __NetBSD__
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#include <disktab.h>
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#include <util.h>
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#endif
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#define MAXU16 0xffff /* maximum unsigned 16-bit quantity */
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#define BPN 4 /* bits per nibble */
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#define NPB 2 /* nibbles per byte */
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#define DOSMAGIC 0xaa55 /* DOS magic number */
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#define MINBPS 128 /* minimum bytes per sector */
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#define MINBPS 512 /* minimum bytes per sector */
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#define MAXSPC 128 /* maximum sectors per cluster */
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#define MAXNFT 16 /* maximum number of FATs */
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#define DEFBLK 4096 /* default block size */
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@ -101,37 +103,10 @@
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#define argto4(arg, lo, msg) argtou(arg, lo, 0xffffffff, msg)
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#define argtox(arg, lo, msg) argtou(arg, lo, UINT_MAX, msg)
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#ifndef MAX
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#define MAX(x, y) ((x) > (y) ? (x) : (y))
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#endif
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#ifndef MIN
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#define MIN(x, y) ((x) < (y) ? (x) : (y))
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#endif
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static int powerof2(int x) {
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int i;
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for (i = 0; i < 32; i++) {
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if (x & 1) {
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x >>= 1;
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// if x is zero, then original x was a power of two
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return (x == 0);
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}
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x >>= 1;
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}
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return 0;
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}
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#ifndef howmany
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#define howmany(x, y) (((x)+((y)-1))/(y))
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#endif
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#pragma pack(push, 1)
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struct bs {
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u_int8_t jmp[3]; /* bootstrap entry point */
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u_int8_t oem[8]; /* OEM name and version */
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};
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#define BS_SIZE 11
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struct bsbpb {
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u_int8_t bps[2]; /* bytes per sector */
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@ -147,7 +122,6 @@ struct bsbpb {
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u_int8_t hid[4]; /* hidden sectors */
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u_int8_t bsec[4]; /* big total sectors */
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};
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#define BSBPB_SIZE 25
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struct bsxbpb {
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u_int8_t bspf[4]; /* big sectors per FAT */
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@ -158,7 +132,6 @@ struct bsxbpb {
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u_int8_t bkbs[2]; /* backup boot sector */
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u_int8_t rsvd[12]; /* reserved */
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};
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#define BSXBPB_SIZE 28
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struct bsx {
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u_int8_t drv; /* drive number */
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@ -168,7 +141,6 @@ struct bsx {
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u_int8_t label[11]; /* volume label */
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u_int8_t type[8]; /* file system type */
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};
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#define BSX_SIZE 26
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struct de {
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u_int8_t namext[11]; /* name and extension */
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@ -178,9 +150,7 @@ struct de {
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u_int8_t date[2]; /* creation date */
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u_int8_t clus[2]; /* starting cluster */
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u_int8_t size[4]; /* size */
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#define DE_SIZE 32
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};
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#pragma pack(pop)
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struct bpb {
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u_int bps; /* bytes per sector */
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@ -201,7 +171,25 @@ struct bpb {
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u_int bkbs; /* backup boot sector */
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};
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static u_int8_t bootcode[] = {
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#define BPBGAP 0, 0, 0, 0, 0, 0
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static struct {
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const char *name;
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struct bpb bpb;
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} const stdfmt[] = {
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{"160", {512, 1, 1, 2, 64, 320, 0xfe, 1, 8, 1, BPBGAP}},
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{"180", {512, 1, 1, 2, 64, 360, 0xfc, 2, 9, 1, BPBGAP}},
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{"320", {512, 2, 1, 2, 112, 640, 0xff, 1, 8, 2, BPBGAP}},
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{"360", {512, 2, 1, 2, 112, 720, 0xfd, 2, 9, 2, BPBGAP}},
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{"640", {512, 2, 1, 2, 112, 1280, 0xfb, 2, 8, 2, BPBGAP}},
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{"720", {512, 2, 1, 2, 112, 1440, 0xf9, 3, 9, 2, BPBGAP}},
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{"1200", {512, 1, 1, 2, 224, 2400, 0xf9, 7, 15, 2, BPBGAP}},
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{"1232", {1024,1, 1, 2, 192, 1232, 0xfe, 2, 8, 2, BPBGAP}},
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{"1440", {512, 1, 1, 2, 224, 2880, 0xf0, 9, 18, 2, BPBGAP}},
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{"2880", {512, 2, 1, 2, 240, 5760, 0xf0, 9, 36, 2, BPBGAP}}
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};
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static const u_int8_t bootcode[] = {
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0xfa, /* cli */
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0x31, 0xc0, /* xor ax,ax */
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0x8e, 0xd0, /* mov ss,ax */
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@ -233,27 +221,68 @@ static u_int8_t bootcode[] = {
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0
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};
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static void check_mounted(const char *, mode_t);
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static void getstdfmt(const char *, struct bpb *);
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static void getdiskinfo(int, const char *, const char *, int,
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struct bpb *);
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static void print_bpb(struct bpb *);
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static u_int ckgeom(const char *, u_int, const char *);
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static u_int argtou(const char *, u_int, u_int, const char *);
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static off_t argtooff(const char *, const char *);
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static int oklabel(const char *);
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static void mklabel(u_int8_t *, const char *);
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static void setstr(u_int8_t *, const char *, size_t);
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static void usage(char* progname);
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static void usage(void);
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#ifdef ANDROID
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static void err(int val, const char *fmt, ...) {
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va_list ap;
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va_start(ap, fmt);
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char *fmt2;
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asprintf(&fmt2, "%s\n", fmt);
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vfprintf(stderr, fmt2, ap);
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free(fmt2);
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va_end(ap);
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}
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static void errx(int val, const char *fmt, ...) {
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va_list ap;
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va_start(ap, fmt);
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char *fmt2;
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asprintf(&fmt2, "%s\n", fmt);
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vfprintf(stderr, fmt2, ap);
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free(fmt2);
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va_end(ap);
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}
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static void warnx(const char *fmt, ...) {
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va_list ap;
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va_start(ap, fmt);
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char *fmt2;
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asprintf(&fmt2, "%s\n", fmt);
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vfprintf(stderr, fmt2, ap);
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free(fmt2);
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va_end(ap);
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}
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#define powerof2(x) ((((x) - 1) & (x)) == 0)
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#define howmany(x, y) (((x) + ((y) - 1)) / (y))
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#define MAX(x,y) ((x) > (y) ? (x) : (y))
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#define MIN(a, b) ((a) < (b) ? (a) : (b))
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#endif
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/*
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* Construct a FAT12, FAT16, or FAT32 file system.
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*/
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int
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mkdosfs_main(int argc, char *argv[])
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newfs_msdos_main(int argc, char *argv[])
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{
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static char opts[] = "NB:F:I:L:O:S:a:b:c:e:f:h:i:k:m:n:o:r:s:u:";
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static const char *opt_B, *opt_L, *opt_O;
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static u_int opt_F, opt_I, opt_S, opt_a, opt_b, opt_c, opt_e;
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static u_int opt_h, opt_i, opt_k, opt_m, opt_n, opt_o, opt_r;
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static u_int opt_s, opt_u;
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static int opt_N;
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static int Iflag, mflag, oflag;
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static const char opts[] = "@:NB:C:F:I:L:O:S:a:b:c:e:f:h:i:k:m:n:o:r:s:u:";
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const char *opt_B = NULL, *opt_L = NULL, *opt_O = NULL, *opt_f = NULL;
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u_int opt_F = 0, opt_I = 0, opt_S = 0, opt_a = 0, opt_b = 0, opt_c = 0;
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u_int opt_e = 0, opt_h = 0, opt_i = 0, opt_k = 0, opt_m = 0, opt_n = 0;
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u_int opt_o = 0, opt_r = 0, opt_s = 0, opt_u = 0;
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int opt_N = 0;
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int Iflag = 0, mflag = 0, oflag = 0;
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char buf[MAXPATHLEN];
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struct stat sb;
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struct timeval tv;
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@ -270,21 +299,27 @@ mkdosfs_main(int argc, char *argv[])
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time_t now;
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u_int fat, bss, rds, cls, dir, lsn, x, x1, x2;
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int ch, fd, fd1;
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char* progname = argv[0];
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off_t opt_create = 0, opt_ofs = 0;
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while ((ch = getopt(argc, argv, opts)) != -1)
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switch (ch) {
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case '@':
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opt_ofs = argtooff(optarg, "offset");
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break;
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case 'N':
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opt_N = 1;
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break;
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case 'B':
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opt_B = optarg;
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break;
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case 'C':
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opt_create = argtooff(optarg, "create size");
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break;
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case 'F':
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if (strcmp(optarg, "12") &&
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strcmp(optarg, "16") &&
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strcmp(optarg, "32"))
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fprintf(stderr, "%s: bad FAT type\n", optarg);
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errx(1, "%s: bad FAT type", optarg);
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opt_F = atoi(optarg);
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break;
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case 'I':
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@ -293,12 +328,12 @@ mkdosfs_main(int argc, char *argv[])
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break;
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case 'L':
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if (!oklabel(optarg))
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fprintf(stderr, "%s: bad volume label\n", optarg);
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errx(1, "%s: bad volume label", optarg);
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opt_L = optarg;
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break;
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case 'O':
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if (strlen(optarg) > 8)
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fprintf(stderr, "%s: bad OEM string\n", optarg);
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errx(1, "%s: bad OEM string", optarg);
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opt_O = optarg;
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break;
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case 'S':
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@ -318,6 +353,9 @@ mkdosfs_main(int argc, char *argv[])
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case 'e':
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opt_e = argto2(optarg, 1, "directory entries");
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break;
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case 'f':
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opt_f = optarg;
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break;
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case 'h':
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opt_h = argto2(optarg, 1, "drive heads");
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break;
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@ -348,24 +386,50 @@ mkdosfs_main(int argc, char *argv[])
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opt_u = argto2(optarg, 1, "sectors/track");
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break;
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default:
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usage(progname);
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usage();
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}
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argc -= optind;
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argv += optind;
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if (argc < 1 || argc > 2)
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usage(progname);
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usage();
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fname = *argv++;
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if (!strchr(fname, '/')) {
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snprintf(buf, sizeof(buf), "%sr%s", _PATH_DEV, fname);
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if (!opt_create && !strchr(fname, '/')) {
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snprintf(buf, sizeof(buf), "%s%s", _PATH_DEV, fname);
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if (!(fname = strdup(buf)))
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fprintf(stderr, NULL);
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err(1, NULL);
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}
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dtype = *argv;
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if ((fd = open(fname, opt_N ? O_RDONLY : O_RDWR)) == -1 ||
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fstat(fd, &sb))
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fprintf(stderr, "%s\n", fname);
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if (opt_create) {
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if (opt_N)
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errx(1, "create (-C) is incompatible with -N");
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fd = open(fname, O_RDWR | O_CREAT | O_TRUNC, 0644);
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if (fd == -1)
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errx(1, "failed to create %s", fname);
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if (ftruncate(fd, opt_create))
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errx(1, "failed to initialize %jd bytes", (intmax_t)opt_create);
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} else if ((fd = open(fname, opt_N ? O_RDONLY : O_RDWR)) == -1)
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err(1, "%s", fname);
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if (fstat(fd, &sb))
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err(1, "%s", fname);
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if (opt_create) {
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if (!S_ISREG(sb.st_mode))
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warnx("warning, %s is not a regular file", fname);
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} else {
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if (!S_ISCHR(sb.st_mode))
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warnx("warning, %s is not a character device", fname);
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}
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if (!opt_N)
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check_mounted(fname, sb.st_mode);
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if (opt_ofs && opt_ofs != lseek(fd, opt_ofs, SEEK_SET))
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errx(1, "cannot seek to %jd", (intmax_t)opt_ofs);
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memset(&bpb, 0, sizeof(bpb));
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if (opt_f) {
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getstdfmt(opt_f, &bpb);
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bpb.bsec = bpb.sec;
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bpb.sec = 0;
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bpb.bspf = bpb.spf;
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bpb.spf = 0;
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}
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if (opt_h)
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bpb.hds = opt_h;
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if (opt_u)
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@ -376,70 +440,67 @@ mkdosfs_main(int argc, char *argv[])
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bpb.bsec = opt_s;
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if (oflag)
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bpb.hid = opt_o;
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bpb.bps = 512; // 512 bytes/sector
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bpb.spc = 8; // 4K clusters
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fprintf(stderr, "opening %s\n", fname);
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if ((fd1 = open(fname, O_RDONLY)) == -1) {
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fprintf(stderr, "failed to open %s\n", fname);
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exit(1);
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if (!(opt_f || (opt_h && opt_u && opt_S && opt_s && oflag))) {
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off_t delta;
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getdiskinfo(fd, fname, dtype, oflag, &bpb);
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bpb.bsec -= (opt_ofs / bpb.bps);
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delta = bpb.bsec % bpb.spt;
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if (delta != 0) {
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warnx("trim %d sectors to adjust to a multiple of %d",
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(int)delta, bpb.spt);
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bpb.bsec -= delta;
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}
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if (bpb.spc == 0) { /* set defaults */
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if (bpb.bsec <= 6000) /* about 3MB -> 512 bytes */
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bpb.spc = 1;
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else if (bpb.bsec <= (1<<17)) /* 64M -> 4k */
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bpb.spc = 8;
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else if (bpb.bsec <= (1<<19)) /* 256M -> 8k */
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bpb.spc = 16;
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else if (bpb.bsec <= (1<<21)) /* 1G -> 16k */
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bpb.spc = 32;
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else
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bpb.spc = 64; /* otherwise 32k */
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}
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lseek64(fd1, 0, SEEK_SET);
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loff_t length = lseek64(fd1, 0, SEEK_END);
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if (length > 0) {
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bpb.bsec = length / bpb.bps;
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bpb.spt = bpb.bsec;
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// use FAT32 for 2 gig or greater
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if (length >= 2 *1024 *1024 *1024) {
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fat = 32;
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} else {
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fat = 16;
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}
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}
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close(fd1);
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fd1 = -1;
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if (!powerof2(bpb.bps))
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fprintf(stderr, "bytes/sector (%u) is not a power of 2\n", bpb.bps);
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errx(1, "bytes/sector (%u) is not a power of 2", bpb.bps);
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if (bpb.bps < MINBPS)
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fprintf(stderr, "bytes/sector (%u) is too small; minimum is %u\n",
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errx(1, "bytes/sector (%u) is too small; minimum is %u",
|
||||
bpb.bps, MINBPS);
|
||||
|
||||
if (!(fat = opt_F)) {
|
||||
if (!opt_e && (opt_i || opt_k))
|
||||
if (opt_f)
|
||||
fat = 12;
|
||||
else if (!opt_e && (opt_i || opt_k))
|
||||
fat = 32;
|
||||
}
|
||||
|
||||
if ((fat == 32 && opt_e) || (fat != 32 && (opt_i || opt_k)))
|
||||
fprintf(stderr, "-%c is not a legal FAT%s option\n",
|
||||
errx(1, "-%c is not a legal FAT%s option",
|
||||
fat == 32 ? 'e' : opt_i ? 'i' : 'k',
|
||||
fat == 32 ? "32" : "12/16");
|
||||
if (fat == 32)
|
||||
if (opt_f && fat == 32)
|
||||
bpb.rde = 0;
|
||||
if (opt_b) {
|
||||
if (!powerof2(opt_b))
|
||||
fprintf(stderr, "block size (%u) is not a power of 2\n", opt_b);
|
||||
errx(1, "block size (%u) is not a power of 2", opt_b);
|
||||
if (opt_b < bpb.bps)
|
||||
fprintf(stderr, "block size (%u) is too small; minimum is %u\n",
|
||||
errx(1, "block size (%u) is too small; minimum is %u",
|
||||
opt_b, bpb.bps);
|
||||
if (opt_b > bpb.bps * MAXSPC)
|
||||
fprintf(stderr, "block size (%u) is too large; maximum is %u\n",
|
||||
errx(1, "block size (%u) is too large; maximum is %u",
|
||||
opt_b, bpb.bps * MAXSPC);
|
||||
bpb.spc = opt_b / bpb.bps;
|
||||
}
|
||||
if (opt_c) {
|
||||
if (!powerof2(opt_c))
|
||||
fprintf(stderr, "sectors/cluster (%u) is not a power of 2\n", opt_c);
|
||||
errx(1, "sectors/cluster (%u) is not a power of 2", opt_c);
|
||||
bpb.spc = opt_c;
|
||||
}
|
||||
if (opt_r)
|
||||
bpb.res = opt_r;
|
||||
if (opt_n) {
|
||||
if (opt_n > MAXNFT)
|
||||
fprintf(stderr, "number of FATs (%u) is too large; maximum is %u\n",
|
||||
errx(1, "number of FATs (%u) is too large; maximum is %u",
|
||||
opt_n, MAXNFT);
|
||||
bpb.nft = opt_n;
|
||||
}
|
||||
|
|
@ -447,7 +508,7 @@ mkdosfs_main(int argc, char *argv[])
|
|||
bpb.rde = opt_e;
|
||||
if (mflag) {
|
||||
if (opt_m < 0xf0)
|
||||
fprintf(stderr, "illegal media descriptor (%#x)\n", opt_m);
|
||||
errx(1, "illegal media descriptor (%#x)", opt_m);
|
||||
bpb.mid = opt_m;
|
||||
}
|
||||
if (opt_a)
|
||||
|
|
@ -464,13 +525,13 @@ mkdosfs_main(int argc, char *argv[])
|
|||
if (!strchr(bname, '/')) {
|
||||
snprintf(buf, sizeof(buf), "/boot/%s", bname);
|
||||
if (!(bname = strdup(buf)))
|
||||
fprintf(stderr, NULL);
|
||||
err(1, NULL);
|
||||
}
|
||||
if ((fd1 = open(bname, O_RDONLY)) == -1 || fstat(fd1, &sb))
|
||||
fprintf(stderr, "%s", bname);
|
||||
err(1, "%s", bname);
|
||||
if (!S_ISREG(sb.st_mode) || sb.st_size % bpb.bps ||
|
||||
sb.st_size < bpb.bps || sb.st_size > bpb.bps * MAXU16)
|
||||
fprintf(stderr, "%s: inappropriate file type or format\n", bname);
|
||||
errx(1, "%s: inappropriate file type or format", bname);
|
||||
bss = sb.st_size / bpb.bps;
|
||||
}
|
||||
if (!bpb.nft)
|
||||
|
|
@ -481,14 +542,14 @@ mkdosfs_main(int argc, char *argv[])
|
|||
((bpb.spc ? 16 : 12) / BPN), bpb.bps * NPB) *
|
||||
bpb.nft +
|
||||
howmany(bpb.rde ? bpb.rde : DEFRDE,
|
||||
bpb.bps / DE_SIZE) +
|
||||
bpb.bps / sizeof(struct de)) +
|
||||
(bpb.spc ? MINCLS16 : MAXCLS12 + 1) *
|
||||
(bpb.spc ? bpb.spc : howmany(DEFBLK, bpb.bps)))
|
||||
fat = 12;
|
||||
else if (bpb.rde || bpb.bsec <
|
||||
(bpb.res ? bpb.res : bss) +
|
||||
howmany((RESFTE + MAXCLS16) * 2, bpb.bps) * bpb.nft +
|
||||
howmany(DEFRDE, bpb.bps / DE_SIZE) +
|
||||
howmany(DEFRDE, bpb.bps / sizeof(struct de)) +
|
||||
(MAXCLS16 + 1) *
|
||||
(bpb.spc ? bpb.spc : howmany(8192, bpb.bps)))
|
||||
fat = 16;
|
||||
|
|
@ -499,27 +560,27 @@ mkdosfs_main(int argc, char *argv[])
|
|||
if (fat == 32) {
|
||||
if (!bpb.infs) {
|
||||
if (x == MAXU16 || x == bpb.bkbs)
|
||||
fprintf(stderr, "no room for info sector\n");
|
||||
errx(1, "no room for info sector");
|
||||
bpb.infs = x;
|
||||
}
|
||||
if (bpb.infs != MAXU16 && x <= bpb.infs)
|
||||
x = bpb.infs + 1;
|
||||
if (!bpb.bkbs) {
|
||||
if (x == MAXU16)
|
||||
fprintf(stderr, "no room for backup sector\n");
|
||||
errx(1, "no room for backup sector");
|
||||
bpb.bkbs = x;
|
||||
} else if (bpb.bkbs != MAXU16 && bpb.bkbs == bpb.infs)
|
||||
fprintf(stderr, "backup sector would overwrite info sector\n");
|
||||
errx(1, "backup sector would overwrite info sector");
|
||||
if (bpb.bkbs != MAXU16 && x <= bpb.bkbs)
|
||||
x = bpb.bkbs + 1;
|
||||
}
|
||||
if (!bpb.res)
|
||||
bpb.res = fat == 32 ? MAX(x, MAX(16384 / bpb.bps, 4)) : x;
|
||||
else if (bpb.res < x)
|
||||
fprintf(stderr, "too few reserved sectors (need %d have %d)\n", x, bpb.res);
|
||||
errx(1, "too few reserved sectors");
|
||||
if (fat != 32 && !bpb.rde)
|
||||
bpb.rde = DEFRDE;
|
||||
rds = howmany(bpb.rde, bpb.bps / DE_SIZE);
|
||||
rds = howmany(bpb.rde, bpb.bps / sizeof(struct de));
|
||||
if (!bpb.spc)
|
||||
for (bpb.spc = howmany(fat == 16 ? DEFBLK16 : DEFBLK, bpb.bps);
|
||||
bpb.spc < MAXSPC &&
|
||||
|
|
@ -530,11 +591,11 @@ mkdosfs_main(int argc, char *argv[])
|
|||
(u_int64_t)(maxcls(fat) + 1) * bpb.spc <= bpb.bsec;
|
||||
bpb.spc <<= 1);
|
||||
if (fat != 32 && bpb.bspf > MAXU16)
|
||||
fprintf(stderr, "too many sectors/FAT for FAT12/16\n");
|
||||
errx(1, "too many sectors/FAT for FAT12/16");
|
||||
x1 = bpb.res + rds;
|
||||
x = bpb.bspf ? bpb.bspf : 1;
|
||||
if (x1 + (u_int64_t)x * bpb.nft > bpb.bsec)
|
||||
fprintf(stderr, "meta data exceeds file system size\n");
|
||||
errx(1, "meta data exceeds file system size");
|
||||
x1 += x * bpb.nft;
|
||||
x = (u_int64_t)(bpb.bsec - x1) * bpb.bps * NPB /
|
||||
(bpb.spc * bpb.bps * NPB + fat / BPN * bpb.nft);
|
||||
|
|
@ -549,15 +610,15 @@ mkdosfs_main(int argc, char *argv[])
|
|||
if (cls > x)
|
||||
cls = x;
|
||||
if (bpb.bspf < x2)
|
||||
fprintf(stderr, "warning: sectors/FAT limits file system to %u clusters\n",
|
||||
warnx("warning: sectors/FAT limits file system to %u clusters",
|
||||
cls);
|
||||
if (cls < mincls(fat))
|
||||
fprintf(stderr, "%u clusters too few clusters for FAT%u, need %u\n", cls, 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.bsec = x1 + (cls + 1) * bpb.spc - 1;
|
||||
fprintf(stderr, "warning: FAT type limits file system to %u sectors\n",
|
||||
warnx("warning: FAT type limits file system to %u sectors",
|
||||
bpb.bsec);
|
||||
}
|
||||
printf("%s: %u sector%s in %u FAT%u cluster%s "
|
||||
|
|
@ -576,57 +637,33 @@ mkdosfs_main(int argc, char *argv[])
|
|||
bpb.spf = bpb.bspf;
|
||||
bpb.bspf = 0;
|
||||
}
|
||||
ch = 0;
|
||||
if (fat == 12)
|
||||
ch = 1; /* 001 Primary DOS with 12 bit FAT */
|
||||
else if (fat == 16) {
|
||||
if (bpb.bsec == 0)
|
||||
ch = 4; /* 004 Primary DOS with 16 bit FAT <32M */
|
||||
else
|
||||
ch = 6; /* 006 Primary 'big' DOS, 16-bit FAT (> 32MB) */
|
||||
/*
|
||||
* XXX: what about:
|
||||
* 014 DOS (16-bit FAT) - LBA
|
||||
* ?
|
||||
*/
|
||||
} else if (fat == 32) {
|
||||
ch = 11; /* 011 Primary DOS with 32 bit FAT */
|
||||
/*
|
||||
* XXX: what about:
|
||||
* 012 Primary DOS with 32 bit FAT - LBA
|
||||
* ?
|
||||
*/
|
||||
}
|
||||
if (ch != 0)
|
||||
printf("MBR type: %d\n", ch);
|
||||
print_bpb(&bpb);
|
||||
if (!opt_N) {
|
||||
gettimeofday(&tv, NULL);
|
||||
now = tv.tv_sec;
|
||||
tm = localtime(&now);
|
||||
if (!(img = malloc(bpb.bps)))
|
||||
fprintf(stderr, NULL);
|
||||
err(1, NULL);
|
||||
dir = bpb.res + (bpb.spf ? bpb.spf : bpb.bspf) * bpb.nft;
|
||||
|
||||
for (lsn = 0; lsn < dir + (fat == 32 ? bpb.spc : rds); lsn++) {
|
||||
x = lsn;
|
||||
if (opt_B &&
|
||||
fat == 32 && bpb.bkbs != MAXU16 &&
|
||||
bss <= bpb.bkbs && x >= bpb.bkbs) {
|
||||
x -= bpb.bkbs;
|
||||
if (!x && lseek64(fd1, 0, SEEK_SET))
|
||||
fprintf(stderr, "lseek64 failed for %s\n", bname);
|
||||
if (!x && lseek(fd1, opt_ofs, SEEK_SET))
|
||||
err(1, "%s", bname);
|
||||
}
|
||||
if (opt_B && x < bss) {
|
||||
if ((n = read(fd1, img, bpb.bps)) == -1)
|
||||
fprintf(stderr, "%s\n", bname);
|
||||
if (n != bpb.bps)
|
||||
fprintf(stderr, "%s: can't read sector %u\n", bname, x);
|
||||
err(1, "%s", bname);
|
||||
if ((unsigned)n != bpb.bps)
|
||||
errx(1, "%s: can't read sector %u", bname, x);
|
||||
} else
|
||||
memset(img, 0, bpb.bps);
|
||||
if (!lsn ||
|
||||
(fat == 32 && bpb.bkbs != MAXU16 && lsn == bpb.bkbs)) {
|
||||
x1 = BS_SIZE;
|
||||
x1 = sizeof(struct bs);
|
||||
bsbpb = (struct bsbpb *)(img + x1);
|
||||
mk2(bsbpb->bps, bpb.bps);
|
||||
mk1(bsbpb->spc, bpb.spc);
|
||||
|
|
@ -640,7 +677,7 @@ mkdosfs_main(int argc, char *argv[])
|
|||
mk2(bsbpb->hds, bpb.hds);
|
||||
mk4(bsbpb->hid, bpb.hid);
|
||||
mk4(bsbpb->bsec, bpb.bsec);
|
||||
x1 += BSBPB_SIZE;
|
||||
x1 += sizeof(struct bsbpb);
|
||||
if (fat == 32) {
|
||||
bsxbpb = (struct bsxbpb *)(img + x1);
|
||||
mk4(bsxbpb->bspf, bpb.bspf);
|
||||
|
|
@ -649,7 +686,7 @@ mkdosfs_main(int argc, char *argv[])
|
|||
mk4(bsxbpb->rdcl, bpb.rdcl);
|
||||
mk2(bsxbpb->infs, bpb.infs);
|
||||
mk2(bsxbpb->bkbs, bpb.bkbs);
|
||||
x1 += BSXBPB_SIZE;
|
||||
x1 += sizeof(struct bsxbpb);
|
||||
}
|
||||
bsx = (struct bsx *)(img + x1);
|
||||
mk1(bsx->sig, 0x29);
|
||||
|
|
@ -664,29 +701,29 @@ mkdosfs_main(int argc, char *argv[])
|
|||
((u_int)tm->tm_hour << 8 |
|
||||
(u_int)tm->tm_min));
|
||||
mk4(bsx->volid, x);
|
||||
mklabel(bsx->label, opt_L ? opt_L : "NO_NAME");
|
||||
snprintf(buf, sizeof(buf), "FAT%u", fat);
|
||||
mklabel(bsx->label, opt_L ? opt_L : "NO NAME");
|
||||
sprintf(buf, "FAT%u", fat);
|
||||
setstr(bsx->type, buf, sizeof(bsx->type));
|
||||
if (!opt_B) {
|
||||
x1 += BSX_SIZE;
|
||||
x1 += sizeof(struct bsx);
|
||||
bs = (struct bs *)img;
|
||||
mk1(bs->jmp[0], 0xeb);
|
||||
mk1(bs->jmp[1], x1 - 2);
|
||||
mk1(bs->jmp[2], 0x90);
|
||||
setstr(bs->oem, opt_O ? opt_O : "NetBSD",
|
||||
setstr(bs->oem, opt_O ? opt_O : "BSD 4.4",
|
||||
sizeof(bs->oem));
|
||||
memcpy(img + x1, bootcode, sizeof(bootcode));
|
||||
mk2(img + bpb.bps - 2, DOSMAGIC);
|
||||
mk2(img + MINBPS - 2, DOSMAGIC);
|
||||
}
|
||||
} else if (fat == 32 && bpb.infs != MAXU16 &&
|
||||
(lsn == bpb.infs ||
|
||||
(bpb.bkbs != MAXU16 &&
|
||||
lsn == bpb.bkbs + bpb.infs))) {
|
||||
mk4(img, 0x41615252);
|
||||
mk4(img + bpb.bps - 28, 0x61417272);
|
||||
mk4(img + bpb.bps - 24, 0xffffffff);
|
||||
mk4(img + bpb.bps - 20, bpb.rdcl);
|
||||
mk2(img + bpb.bps - 2, DOSMAGIC);
|
||||
mk4(img + MINBPS - 28, 0x61417272);
|
||||
mk4(img + MINBPS - 24, 0xffffffff);
|
||||
mk4(img + MINBPS - 20, bpb.rdcl);
|
||||
mk2(img + MINBPS - 2, DOSMAGIC);
|
||||
} else if (lsn >= bpb.res && lsn < dir &&
|
||||
!((lsn - bpb.res) %
|
||||
(bpb.spf ? bpb.spf : bpb.bspf))) {
|
||||
|
|
@ -707,14 +744,177 @@ mkdosfs_main(int argc, char *argv[])
|
|||
mk2(de->date, x);
|
||||
}
|
||||
if ((n = write(fd, img, bpb.bps)) == -1)
|
||||
fprintf(stderr, "%s\n", fname);
|
||||
if (n != bpb.bps)
|
||||
fprintf(stderr, "%s: can't write sector %u\n", fname, lsn);
|
||||
err(1, "%s", fname);
|
||||
if ((unsigned)n != bpb.bps)
|
||||
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;
|
||||
|
||||
#ifdef ANDROID
|
||||
warnx("Skipping mount checks");
|
||||
#else
|
||||
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);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
/*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#ifdef ANDROID
|
||||
static void
|
||||
getdiskinfo(int fd, const char *fname, const char *dtype, __unused int oflag,
|
||||
struct bpb *bpb)
|
||||
{
|
||||
struct hd_geometry geom;
|
||||
|
||||
if (ioctl(fd, BLKSSZGET, &bpb->bps)) {
|
||||
fprintf(stderr, "Error getting bytes / sector (%s)", strerror(errno));
|
||||
exit(1);
|
||||
}
|
||||
|
||||
ckgeom(fname, bpb->bps, "bytes/sector");
|
||||
|
||||
if (ioctl(fd, BLKGETSIZE, &bpb->bsec)) {
|
||||
fprintf(stderr, "Error getting blocksize (%s)", strerror(errno));
|
||||
exit(1);
|
||||
}
|
||||
|
||||
if (ioctl(fd, HDIO_GETGEO, &geom)) {
|
||||
fprintf(stderr, "Error getting gemoetry (%s)", strerror(errno));
|
||||
exit(1);
|
||||
}
|
||||
|
||||
bpb->spt = geom.sectors;
|
||||
ckgeom(fname, bpb->spt, "sectors/track");
|
||||
|
||||
bpb->hds = geom.heads;
|
||||
ckgeom(fname, bpb->hds, "drive heads");
|
||||
}
|
||||
|
||||
#else
|
||||
|
||||
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 (ioctl(fd, DIOCGDINFO, &dlp) == -1) {
|
||||
if (bpb->bps == 0 && ioctl(fd, DIOCGSECTORSIZE, &dlp.d_secsize) == -1)
|
||||
errx(1, "Cannot get sector size, %s", strerror(errno));
|
||||
|
||||
/* XXX Should we use bpb->bps if it's set? */
|
||||
dlp.d_secperunit = ms / dlp.d_secsize;
|
||||
|
||||
if (bpb->spt == 0 && ioctl(fd, DIOCGFWSECTORS, &dlp.d_nsectors) == -1) {
|
||||
warnx("Cannot get number of sectors per track, %s", strerror(errno));
|
||||
dlp.d_nsectors = 63;
|
||||
}
|
||||
if (bpb->hds == 0 && ioctl(fd, DIOCGFWHEADS, &dlp.d_ntracks) == -1) {
|
||||
warnx("Cannot get number of heads, %s", strerror(errno));
|
||||
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->bps == 0)
|
||||
bpb->bps = ckgeom(fname, lp->d_secsize, "bytes/sector");
|
||||
if (bpb->spt == 0)
|
||||
bpb->spt = ckgeom(fname, lp->d_nsectors, "sectors/track");
|
||||
if (bpb->hds == 0)
|
||||
bpb->hds = ckgeom(fname, lp->d_ntracks, "drive heads");
|
||||
if (bpb->bsec == 0)
|
||||
bpb->bsec = lp->d_secperunit;
|
||||
if (bpb->hid == 0)
|
||||
bpb->hid = hs;
|
||||
}
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Print out BPB values.
|
||||
*/
|
||||
|
|
@ -750,9 +950,9 @@ static u_int
|
|||
ckgeom(const char *fname, u_int val, const char *msg)
|
||||
{
|
||||
if (!val)
|
||||
fprintf(stderr, "%s: no default %s\n", fname, msg);
|
||||
errx(1, "%s: no default %s", fname, msg);
|
||||
if (val > MAXU16)
|
||||
fprintf(stderr, "%s: illegal %s\n", fname, msg);
|
||||
errx(1, "%s: illegal %s %d", fname, msg, val);
|
||||
return val;
|
||||
}
|
||||
|
||||
|
|
@ -768,7 +968,57 @@ argtou(const char *arg, u_int lo, u_int hi, const char *msg)
|
|||
errno = 0;
|
||||
x = strtoul(arg, &s, 0);
|
||||
if (errno || !*arg || *s || x < lo || x > hi)
|
||||
fprintf(stderr, "%s: bad %s\n", arg, msg);
|
||||
errx(1, "%s: bad %s", arg, msg);
|
||||
return x;
|
||||
}
|
||||
|
||||
/*
|
||||
* Same for off_t, with optional skmgpP suffix
|
||||
*/
|
||||
static off_t
|
||||
argtooff(const char *arg, const char *msg)
|
||||
{
|
||||
char *s;
|
||||
off_t x;
|
||||
|
||||
x = strtoll(arg, &s, 0);
|
||||
/* allow at most one extra char */
|
||||
if (errno || x < 0 || (s[0] && s[1]) )
|
||||
errx(1, "%s: bad %s", arg, msg);
|
||||
if (*s) { /* the extra char is the multiplier */
|
||||
switch (*s) {
|
||||
default:
|
||||
errx(1, "%s: bad %s", arg, msg);
|
||||
/* notreached */
|
||||
|
||||
case 's': /* sector */
|
||||
case 'S':
|
||||
x <<= 9; /* times 512 */
|
||||
break;
|
||||
|
||||
case 'k': /* kilobyte */
|
||||
case 'K':
|
||||
x <<= 10; /* times 1024 */
|
||||
break;
|
||||
|
||||
case 'm': /* megabyte */
|
||||
case 'M':
|
||||
x <<= 20; /* times 1024*1024 */
|
||||
break;
|
||||
|
||||
case 'g': /* gigabyte */
|
||||
case 'G':
|
||||
x <<= 30; /* times 1024*1024*1024 */
|
||||
break;
|
||||
|
||||
case 'p': /* partition start */
|
||||
case 'P': /* partition start */
|
||||
case 'l': /* partition length */
|
||||
case 'L': /* partition length */
|
||||
errx(1, "%s: not supported yet %s", arg, msg);
|
||||
/* notreached */
|
||||
}
|
||||
}
|
||||
return x;
|
||||
}
|
||||
|
||||
|
|
@ -797,7 +1047,7 @@ mklabel(u_int8_t *dest, const char *src)
|
|||
int c, i;
|
||||
|
||||
for (i = 0; i < 11; i++) {
|
||||
c = *src ? toupper((unsigned char)*src++) : ' ';
|
||||
c = *src ? toupper(*src++) : ' ';
|
||||
*dest++ = !i && c == '\xe5' ? 5 : c;
|
||||
}
|
||||
}
|
||||
|
|
@ -816,33 +1066,33 @@ setstr(u_int8_t *dest, const char *src, size_t len)
|
|||
* Print usage message.
|
||||
*/
|
||||
static void
|
||||
usage(char* progname)
|
||||
usage(void)
|
||||
{
|
||||
fprintf(stderr,
|
||||
"usage: %s [ -options ] special [disktype]\n", progname);
|
||||
fprintf(stderr, "where the options are:\n");
|
||||
fprintf(stderr, "\t-N don't create file system: "
|
||||
"just print out parameters\n");
|
||||
fprintf(stderr, "\t-B get bootstrap from file\n");
|
||||
fprintf(stderr, "\t-F FAT type (12, 16, or 32)\n");
|
||||
fprintf(stderr, "\t-I volume ID\n");
|
||||
fprintf(stderr, "\t-L volume label\n");
|
||||
fprintf(stderr, "\t-O OEM string\n");
|
||||
fprintf(stderr, "\t-S bytes/sector\n");
|
||||
fprintf(stderr, "\t-a sectors/FAT\n");
|
||||
fprintf(stderr, "\t-b block size\n");
|
||||
fprintf(stderr, "\t-c sectors/cluster\n");
|
||||
fprintf(stderr, "\t-e root directory entries\n");
|
||||
fprintf(stderr, "\t-h drive heads\n");
|
||||
fprintf(stderr, "\t-i file system info sector\n");
|
||||
fprintf(stderr, "\t-k backup boot sector\n");
|
||||
fprintf(stderr, "\t-m media descriptor\n");
|
||||
fprintf(stderr, "\t-n number of FATs\n");
|
||||
fprintf(stderr, "\t-o hidden sectors\n");
|
||||
fprintf(stderr, "\t-r reserved sectors\n");
|
||||
fprintf(stderr, "\t-s file system size (sectors)\n");
|
||||
fprintf(stderr, "\t-u sectors/track\n");
|
||||
exit(1);
|
||||
fprintf(stderr,
|
||||
"usage: newfs_msdos [ -options ] special [disktype]\n"
|
||||
"where the options are:\n"
|
||||
"\t-@ create file system at specified offset\n"
|
||||
"\t-B get bootstrap from file\n"
|
||||
"\t-C create image file with specified size\n"
|
||||
"\t-F FAT type (12, 16, or 32)\n"
|
||||
"\t-I volume ID\n"
|
||||
"\t-L volume label\n"
|
||||
"\t-N don't create file system: just print out parameters\n"
|
||||
"\t-O OEM string\n"
|
||||
"\t-S bytes/sector\n"
|
||||
"\t-a sectors/FAT\n"
|
||||
"\t-b block size\n"
|
||||
"\t-c sectors/cluster\n"
|
||||
"\t-e root directory entries\n"
|
||||
"\t-f standard format\n"
|
||||
"\t-h drive heads\n"
|
||||
"\t-i file system info sector\n"
|
||||
"\t-k backup boot sector\n"
|
||||
"\t-m media descriptor\n"
|
||||
"\t-n number of FATs\n"
|
||||
"\t-o hidden sectors\n"
|
||||
"\t-r reserved sectors\n"
|
||||
"\t-s file system size (sectors)\n"
|
||||
"\t-u sectors/track\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue