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-rw-r--r--sbin/newfs_msdos/newfs_msdos.c837
1 files changed, 2 insertions, 835 deletions
diff --git a/sbin/newfs_msdos/newfs_msdos.c b/sbin/newfs_msdos/newfs_msdos.c
index a399425..79529f2 100644
--- a/sbin/newfs_msdos/newfs_msdos.c
+++ b/sbin/newfs_msdos/newfs_msdos.c
@@ -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)
#define argto4(arg, lo, msg) argtou(arg, lo, 0xffffffff, msg)
#define argtox(arg, lo, msg) argtou(arg, lo, UINT_MAX, msg)
-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
-};
-
-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;
-};
-
-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 u_int argtou(const char *, u_int, u_int, const char *);
static off_t argtooff(const char *, const char *);
-static int oklabel(const char *);
-static int mkfs_msdos(const char *, const char *, const struct msdos_options *);
-static void mklabel(u_int8_t *, const char *);
-static void setstr(u_int8_t *, const char *, size_t);
static void usage(void);
/*
@@ -300,13 +91,9 @@ main(int argc, char *argv[])
o.volume_id_set = 1;
break;
case 'L':
- if (!oklabel(optarg))
- errx(1, "%s: bad volume label", optarg);
o.volume_label = optarg;
break;
case 'O':
- if (strlen(optarg) > 8)
- errx(1, "%s: bad OEM string", optarg);
o.OEM_string = optarg;
break;
case 'S':
@@ -375,579 +162,6 @@ main(int argc, char *argv[])
return mkfs_msdos(fname, dtype, &o);
}
-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.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 (!(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 (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;
-}
-
/*
* Convert and check a numeric option argument.
*/
@@ -983,7 +197,7 @@ argtooff(const char *arg, const char *msg)
default:
errx(1, "%s: bad %s", arg, msg);
/* notreached */
-
+
case 's': /* sector */
case 'S':
x <<= 9; /* times 512 */
@@ -1016,46 +230,6 @@ argtooff(const char *arg, const char *msg)
}
/*
- * 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++ : ' ';
-}
-
-/*
* Print usage message.
*/
static void
@@ -1089,10 +263,3 @@ usage(void)
"\t-u sectors/track\n");
exit(1);
}
-
-static void
-infohandler(int sig __unused)
-{
-
- got_siginfo = 1;
-}
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