newfs_msdos.c revision 140384
137446Srnordier/* 237446Srnordier * Copyright (c) 1998 Robert Nordier 337446Srnordier * All rights reserved. 437446Srnordier * 537446Srnordier * Redistribution and use in source and binary forms, with or without 637446Srnordier * modification, are permitted provided that the following conditions 737446Srnordier * are met: 837446Srnordier * 1. Redistributions of source code must retain the above copyright 937446Srnordier * notice, this list of conditions and the following disclaimer. 1037446Srnordier * 2. Redistributions in binary form must reproduce the above copyright 1137446Srnordier * notice, this list of conditions and the following disclaimer in 1237446Srnordier * the documentation and/or other materials provided with the 1337446Srnordier * distribution. 1437446Srnordier * 1537446Srnordier * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS 1637446Srnordier * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 1737446Srnordier * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1837446Srnordier * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY 1937446Srnordier * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2037446Srnordier * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 2137446Srnordier * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 2237446Srnordier * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 2337446Srnordier * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 2437446Srnordier * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 2537446Srnordier * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2637446Srnordier */ 2737446Srnordier 2837446Srnordier#ifndef lint 2937446Srnordierstatic const char rcsid[] = 3050476Speter "$FreeBSD: head/sbin/newfs_msdos/newfs_msdos.c 140384 2005-01-17 14:14:00Z delphij $"; 3137446Srnordier#endif /* not lint */ 3237446Srnordier 3337446Srnordier#include <sys/param.h> 34106372Sscottl#include <sys/fdcio.h> 35106372Sscottl#include <sys/disk.h> 3637446Srnordier#include <sys/disklabel.h> 3737446Srnordier#include <sys/mount.h> 3866907Swollman#include <sys/stat.h> 3966907Swollman#include <sys/time.h> 4037446Srnordier 4137446Srnordier#include <ctype.h> 4237446Srnordier#include <err.h> 4337446Srnordier#include <errno.h> 4437446Srnordier#include <fcntl.h> 4537446Srnordier#include <paths.h> 4637446Srnordier#include <stdio.h> 4737446Srnordier#include <stdlib.h> 4837446Srnordier#include <string.h> 4966907Swollman#include <time.h> 5037446Srnordier#include <unistd.h> 5137446Srnordier 5237446Srnordier#define MAXU16 0xffff /* maximum unsigned 16-bit quantity */ 5337446Srnordier#define BPN 4 /* bits per nibble */ 5437446Srnordier#define NPB 2 /* nibbles per byte */ 5537446Srnordier 5637446Srnordier#define DOSMAGIC 0xaa55 /* DOS magic number */ 5737446Srnordier#define MINBPS 128 /* minimum bytes per sector */ 5837446Srnordier#define MAXSPC 128 /* maximum sectors per cluster */ 5937446Srnordier#define MAXNFT 16 /* maximum number of FATs */ 6037446Srnordier#define DEFBLK 4096 /* default block size */ 6137446Srnordier#define DEFBLK16 2048 /* default block size FAT16 */ 6237446Srnordier#define DEFRDE 512 /* default root directory entries */ 6337446Srnordier#define RESFTE 2 /* reserved FAT entries */ 6437446Srnordier#define MINCLS12 1 /* minimum FAT12 clusters */ 6537446Srnordier#define MINCLS16 0x1000 /* minimum FAT16 clusters */ 6637446Srnordier#define MINCLS32 2 /* minimum FAT32 clusters */ 6737446Srnordier#define MAXCLS12 0xfed /* maximum FAT12 clusters */ 6837446Srnordier#define MAXCLS16 0xfff5 /* maximum FAT16 clusters */ 6937446Srnordier#define MAXCLS32 0xffffff5 /* maximum FAT32 clusters */ 7037446Srnordier 7137446Srnordier#define mincls(fat) ((fat) == 12 ? MINCLS12 : \ 7237446Srnordier (fat) == 16 ? MINCLS16 : \ 7337446Srnordier MINCLS32) 7437446Srnordier 7537446Srnordier#define maxcls(fat) ((fat) == 12 ? MAXCLS12 : \ 7637446Srnordier (fat) == 16 ? MAXCLS16 : \ 7737446Srnordier MAXCLS32) 7837446Srnordier 7937446Srnordier#define mk1(p, x) \ 8037446Srnordier (p) = (u_int8_t)(x) 8137446Srnordier 8237446Srnordier#define mk2(p, x) \ 8337446Srnordier (p)[0] = (u_int8_t)(x), \ 8437446Srnordier (p)[1] = (u_int8_t)((x) >> 010) 8537446Srnordier 8637446Srnordier#define mk4(p, x) \ 8737446Srnordier (p)[0] = (u_int8_t)(x), \ 8837446Srnordier (p)[1] = (u_int8_t)((x) >> 010), \ 8937446Srnordier (p)[2] = (u_int8_t)((x) >> 020), \ 9037446Srnordier (p)[3] = (u_int8_t)((x) >> 030) 9137446Srnordier 9237446Srnordier#define argto1(arg, lo, msg) argtou(arg, lo, 0xff, msg) 9337446Srnordier#define argto2(arg, lo, msg) argtou(arg, lo, 0xffff, msg) 9437446Srnordier#define argto4(arg, lo, msg) argtou(arg, lo, 0xffffffff, msg) 9537446Srnordier#define argtox(arg, lo, msg) argtou(arg, lo, UINT_MAX, msg) 9637446Srnordier 9737446Srnordierstruct bs { 9837446Srnordier u_int8_t jmp[3]; /* bootstrap entry point */ 9937446Srnordier u_int8_t oem[8]; /* OEM name and version */ 10037446Srnordier}; 10137446Srnordier 10237446Srnordierstruct bsbpb { 10337446Srnordier u_int8_t bps[2]; /* bytes per sector */ 10437446Srnordier u_int8_t spc; /* sectors per cluster */ 10537446Srnordier u_int8_t res[2]; /* reserved sectors */ 10637446Srnordier u_int8_t nft; /* number of FATs */ 10737446Srnordier u_int8_t rde[2]; /* root directory entries */ 10837446Srnordier u_int8_t sec[2]; /* total sectors */ 10937446Srnordier u_int8_t mid; /* media descriptor */ 11037446Srnordier u_int8_t spf[2]; /* sectors per FAT */ 11137446Srnordier u_int8_t spt[2]; /* sectors per track */ 11237446Srnordier u_int8_t hds[2]; /* drive heads */ 11337446Srnordier u_int8_t hid[4]; /* hidden sectors */ 11437446Srnordier u_int8_t bsec[4]; /* big total sectors */ 11537446Srnordier}; 11637446Srnordier 11737446Srnordierstruct bsxbpb { 11837446Srnordier u_int8_t bspf[4]; /* big sectors per FAT */ 11937446Srnordier u_int8_t xflg[2]; /* FAT control flags */ 120102231Strhodes u_int8_t vers[2]; /* file system version */ 12137446Srnordier u_int8_t rdcl[4]; /* root directory start cluster */ 122102231Strhodes u_int8_t infs[2]; /* file system info sector */ 12337446Srnordier u_int8_t bkbs[2]; /* backup boot sector */ 12437446Srnordier u_int8_t rsvd[12]; /* reserved */ 12537446Srnordier}; 12637446Srnordier 12737446Srnordierstruct bsx { 12837446Srnordier u_int8_t drv; /* drive number */ 12937446Srnordier u_int8_t rsvd; /* reserved */ 13037446Srnordier u_int8_t sig; /* extended boot signature */ 13137446Srnordier u_int8_t volid[4]; /* volume ID number */ 13237446Srnordier u_int8_t label[11]; /* volume label */ 133102231Strhodes u_int8_t type[8]; /* file system type */ 13437446Srnordier}; 13537446Srnordier 13637446Srnordierstruct de { 13737446Srnordier u_int8_t namext[11]; /* name and extension */ 13837446Srnordier u_int8_t attr; /* attributes */ 13937446Srnordier u_int8_t rsvd[10]; /* reserved */ 14037446Srnordier u_int8_t time[2]; /* creation time */ 14137446Srnordier u_int8_t date[2]; /* creation date */ 14237446Srnordier u_int8_t clus[2]; /* starting cluster */ 14337446Srnordier u_int8_t size[4]; /* size */ 14437446Srnordier}; 14537446Srnordier 14637446Srnordierstruct bpb { 14737446Srnordier u_int bps; /* bytes per sector */ 14837446Srnordier u_int spc; /* sectors per cluster */ 14937446Srnordier u_int res; /* reserved sectors */ 15037446Srnordier u_int nft; /* number of FATs */ 15137446Srnordier u_int rde; /* root directory entries */ 15237446Srnordier u_int sec; /* total sectors */ 15337446Srnordier u_int mid; /* media descriptor */ 15437446Srnordier u_int spf; /* sectors per FAT */ 15537446Srnordier u_int spt; /* sectors per track */ 15637446Srnordier u_int hds; /* drive heads */ 15737446Srnordier u_int hid; /* hidden sectors */ 15837446Srnordier u_int bsec; /* big total sectors */ 15937446Srnordier u_int bspf; /* big sectors per FAT */ 16037446Srnordier u_int rdcl; /* root directory start cluster */ 161102231Strhodes u_int infs; /* file system info sector */ 16237446Srnordier u_int bkbs; /* backup boot sector */ 16337446Srnordier}; 16437446Srnordier 165140384Sdelphij#define BPBGAP 0, 0, 0, 0, 0, 0 166140384Sdelphij 16737446Srnordierstatic struct { 16837446Srnordier const char *name; 16937446Srnordier struct bpb bpb; 17037446Srnordier} stdfmt[] = { 171140384Sdelphij {"160", {512, 1, 1, 2, 64, 320, 0xfe, 1, 8, 1, BPBGAP}}, 172140384Sdelphij {"180", {512, 1, 1, 2, 64, 360, 0xfc, 2, 9, 1, BPBGAP}}, 173140384Sdelphij {"320", {512, 2, 1, 2, 112, 640, 0xff, 1, 8, 2, BPBGAP}}, 174140384Sdelphij {"360", {512, 2, 1, 2, 112, 720, 0xfd, 2, 9, 2, BPBGAP}}, 175140384Sdelphij {"640", {512, 2, 1, 2, 112, 1280, 0xfb, 2, 8, 2, BPBGAP}}, 176140384Sdelphij {"720", {512, 2, 1, 2, 112, 1440, 0xf9, 3, 9, 2, BPBGAP}}, 177140384Sdelphij {"1200", {512, 1, 1, 2, 224, 2400, 0xf9, 7, 15, 2, BPBGAP}}, 178140384Sdelphij {"1232", {1024,1, 1, 2, 192, 1232, 0xfe, 2, 8, 2, BPBGAP}}, 179140384Sdelphij {"1440", {512, 1, 1, 2, 224, 2880, 0xf0, 9, 18, 2, BPBGAP}}, 180140384Sdelphij {"2880", {512, 2, 1, 2, 240, 5760, 0xf0, 9, 36, 2, BPBGAP}} 18137446Srnordier}; 18237446Srnordier 18337446Srnordierstatic u_int8_t bootcode[] = { 18437446Srnordier 0xfa, /* cli */ 18537446Srnordier 0x31, 0xc0, /* xor ax,ax */ 18637446Srnordier 0x8e, 0xd0, /* mov ss,ax */ 18737446Srnordier 0xbc, 0x00, 0x7c, /* mov sp,7c00h */ 18837446Srnordier 0xfb, /* sti */ 18937446Srnordier 0x8e, 0xd8, /* mov ds,ax */ 19037446Srnordier 0xe8, 0x00, 0x00, /* call $ + 3 */ 19137446Srnordier 0x5e, /* pop si */ 19237446Srnordier 0x83, 0xc6, 0x19, /* add si,+19h */ 19337446Srnordier 0xbb, 0x07, 0x00, /* mov bx,0007h */ 19437446Srnordier 0xfc, /* cld */ 19537446Srnordier 0xac, /* lodsb */ 19637446Srnordier 0x84, 0xc0, /* test al,al */ 19737446Srnordier 0x74, 0x06, /* jz $ + 8 */ 19837446Srnordier 0xb4, 0x0e, /* mov ah,0eh */ 19937446Srnordier 0xcd, 0x10, /* int 10h */ 20037446Srnordier 0xeb, 0xf5, /* jmp $ - 9 */ 20137446Srnordier 0x30, 0xe4, /* xor ah,ah */ 20237446Srnordier 0xcd, 0x16, /* int 16h */ 20337446Srnordier 0xcd, 0x19, /* int 19h */ 20437446Srnordier 0x0d, 0x0a, 20537446Srnordier 'N', 'o', 'n', '-', 's', 'y', 's', 't', 20637446Srnordier 'e', 'm', ' ', 'd', 'i', 's', 'k', 20737446Srnordier 0x0d, 0x0a, 20837446Srnordier 'P', 'r', 'e', 's', 's', ' ', 'a', 'n', 20937446Srnordier 'y', ' ', 'k', 'e', 'y', ' ', 't', 'o', 21037446Srnordier ' ', 'r', 'e', 'b', 'o', 'o', 't', 21137446Srnordier 0x0d, 0x0a, 21237446Srnordier 0 21337446Srnordier}; 21437446Srnordier 21537446Srnordierstatic void check_mounted(const char *, mode_t); 21637446Srnordierstatic void getstdfmt(const char *, struct bpb *); 21737446Srnordierstatic void getdiskinfo(int, const char *, const char *, int, 21837446Srnordier struct bpb *); 21937446Srnordierstatic void print_bpb(struct bpb *); 22037446Srnordierstatic u_int ckgeom(const char *, u_int, const char *); 22137446Srnordierstatic u_int argtou(const char *, u_int, u_int, const char *); 22237446Srnordierstatic int oklabel(const char *); 22337446Srnordierstatic void mklabel(u_int8_t *, const char *); 22437446Srnordierstatic void setstr(u_int8_t *, const char *, size_t); 22537446Srnordierstatic void usage(void); 22637446Srnordier 22737446Srnordier/* 228102231Strhodes * Construct a FAT12, FAT16, or FAT32 file system. 22937446Srnordier */ 23037446Srnordierint 23137446Srnordiermain(int argc, char *argv[]) 23237446Srnordier{ 23337446Srnordier static char opts[] = "NB:F:I:L:O:S:a:b:c:e:f:h:i:k:m:n:o:r:s:u:"; 23437446Srnordier static const char *opt_B, *opt_L, *opt_O, *opt_f; 23537446Srnordier static u_int opt_F, opt_I, opt_S, opt_a, opt_b, opt_c, opt_e; 23637446Srnordier static u_int opt_h, opt_i, opt_k, opt_m, opt_n, opt_o, opt_r; 23737446Srnordier static u_int opt_s, opt_u; 23837446Srnordier static int opt_N; 23937446Srnordier static int Iflag, mflag, oflag; 24037446Srnordier char buf[MAXPATHLEN]; 24137446Srnordier struct stat sb; 24237446Srnordier struct timeval tv; 24337446Srnordier struct bpb bpb; 24437446Srnordier struct tm *tm; 24537446Srnordier struct bs *bs; 24637446Srnordier struct bsbpb *bsbpb; 24737446Srnordier struct bsxbpb *bsxbpb; 24837446Srnordier struct bsx *bsx; 24937446Srnordier struct de *de; 25037446Srnordier u_int8_t *img; 25137446Srnordier const char *fname, *dtype, *bname; 25237446Srnordier ssize_t n; 25340487Sbde time_t now; 25437446Srnordier u_int fat, bss, rds, cls, dir, lsn, x, x1, x2; 25537446Srnordier int ch, fd, fd1; 25637446Srnordier 25737446Srnordier while ((ch = getopt(argc, argv, opts)) != -1) 25837446Srnordier switch (ch) { 25937446Srnordier case 'N': 26037446Srnordier opt_N = 1; 26137446Srnordier break; 26237446Srnordier case 'B': 26337446Srnordier opt_B = optarg; 26437446Srnordier break; 26537446Srnordier case 'F': 26637446Srnordier if (strcmp(optarg, "12") && 26737446Srnordier strcmp(optarg, "16") && 26837446Srnordier strcmp(optarg, "32")) 26937446Srnordier errx(1, "%s: bad FAT type", optarg); 27037446Srnordier opt_F = atoi(optarg); 27137446Srnordier break; 27237446Srnordier case 'I': 27337446Srnordier opt_I = argto4(optarg, 0, "volume ID"); 27437446Srnordier Iflag = 1; 27537446Srnordier break; 27637446Srnordier case 'L': 27737446Srnordier if (!oklabel(optarg)) 27837446Srnordier errx(1, "%s: bad volume label", optarg); 27937446Srnordier opt_L = optarg; 28037446Srnordier break; 28137446Srnordier case 'O': 28237446Srnordier if (strlen(optarg) > 8) 28337446Srnordier errx(1, "%s: bad OEM string", optarg); 28437446Srnordier opt_O = optarg; 28537446Srnordier break; 28637446Srnordier case 'S': 28737446Srnordier opt_S = argto2(optarg, 1, "bytes/sector"); 28837446Srnordier break; 28937446Srnordier case 'a': 29037446Srnordier opt_a = argto4(optarg, 1, "sectors/FAT"); 29137446Srnordier break; 29237446Srnordier case 'b': 29337446Srnordier opt_b = argtox(optarg, 1, "block size"); 29437446Srnordier opt_c = 0; 29537446Srnordier break; 29637446Srnordier case 'c': 29737446Srnordier opt_c = argto1(optarg, 1, "sectors/cluster"); 29837446Srnordier opt_b = 0; 29937446Srnordier break; 30037446Srnordier case 'e': 30137446Srnordier opt_e = argto2(optarg, 1, "directory entries"); 30237446Srnordier break; 30337446Srnordier case 'f': 30437446Srnordier opt_f = optarg; 30537446Srnordier break; 30637446Srnordier case 'h': 30737446Srnordier opt_h = argto2(optarg, 1, "drive heads"); 30837446Srnordier break; 30937446Srnordier case 'i': 31037446Srnordier opt_i = argto2(optarg, 1, "info sector"); 31137446Srnordier break; 31237446Srnordier case 'k': 31337446Srnordier opt_k = argto2(optarg, 1, "backup sector"); 31437446Srnordier break; 31537446Srnordier case 'm': 31637446Srnordier opt_m = argto1(optarg, 0, "media descriptor"); 31737446Srnordier mflag = 1; 31837446Srnordier break; 31937446Srnordier case 'n': 32037446Srnordier opt_n = argto1(optarg, 1, "number of FATs"); 32137446Srnordier break; 32237446Srnordier case 'o': 32337446Srnordier opt_o = argto4(optarg, 0, "hidden sectors"); 32437446Srnordier oflag = 1; 32537446Srnordier break; 32637446Srnordier case 'r': 32737446Srnordier opt_r = argto2(optarg, 1, "reserved sectors"); 32837446Srnordier break; 32937446Srnordier case 's': 330102231Strhodes opt_s = argto4(optarg, 1, "file system size"); 33137446Srnordier break; 33237446Srnordier case 'u': 33337446Srnordier opt_u = argto2(optarg, 1, "sectors/track"); 33437446Srnordier break; 33537446Srnordier default: 33637446Srnordier usage(); 33737446Srnordier } 33837446Srnordier argc -= optind; 33937446Srnordier argv += optind; 34037446Srnordier if (argc < 1 || argc > 2) 34137446Srnordier usage(); 34237446Srnordier fname = *argv++; 34337446Srnordier if (!strchr(fname, '/')) { 34463892Sasmodai snprintf(buf, sizeof(buf), "%s%s", _PATH_DEV, fname); 34537446Srnordier if (!(fname = strdup(buf))) 34637446Srnordier err(1, NULL); 34737446Srnordier } 34837446Srnordier dtype = *argv; 34937446Srnordier if ((fd = open(fname, opt_N ? O_RDONLY : O_RDWR)) == -1 || 35037446Srnordier fstat(fd, &sb)) 35137446Srnordier err(1, "%s", fname); 35237446Srnordier if (!opt_N) 35337446Srnordier check_mounted(fname, sb.st_mode); 35437446Srnordier if (!S_ISCHR(sb.st_mode)) 35564682Srnordier warnx("warning: %s is not a character device", fname); 35637446Srnordier memset(&bpb, 0, sizeof(bpb)); 35737446Srnordier if (opt_f) { 35837446Srnordier getstdfmt(opt_f, &bpb); 35937446Srnordier bpb.bsec = bpb.sec; 36037446Srnordier bpb.sec = 0; 36137446Srnordier bpb.bspf = bpb.spf; 36237446Srnordier bpb.spf = 0; 36337446Srnordier } 36437446Srnordier if (opt_h) 36537446Srnordier bpb.hds = opt_h; 36637446Srnordier if (opt_u) 36737446Srnordier bpb.spt = opt_u; 36837446Srnordier if (opt_S) 36937446Srnordier bpb.bps = opt_S; 37037446Srnordier if (opt_s) 37137446Srnordier bpb.bsec = opt_s; 37237446Srnordier if (oflag) 37337446Srnordier bpb.hid = opt_o; 37437446Srnordier if (!(opt_f || (opt_h && opt_u && opt_S && opt_s && oflag))) 37537446Srnordier getdiskinfo(fd, fname, dtype, oflag, &bpb); 37637446Srnordier if (!powerof2(bpb.bps)) 37737446Srnordier errx(1, "bytes/sector (%u) is not a power of 2", bpb.bps); 37837446Srnordier if (bpb.bps < MINBPS) 37937446Srnordier errx(1, "bytes/sector (%u) is too small; minimum is %u", 38037446Srnordier bpb.bps, MINBPS); 38148954Sbillf if (!(fat = opt_F)) { 38237446Srnordier if (opt_f) 38337446Srnordier fat = 12; 38437446Srnordier else if (!opt_e && (opt_i || opt_k)) 38537446Srnordier fat = 32; 38648954Sbillf } 38737446Srnordier if ((fat == 32 && opt_e) || (fat != 32 && (opt_i || opt_k))) 38837446Srnordier errx(1, "-%c is not a legal FAT%s option", 38937446Srnordier fat == 32 ? 'e' : opt_i ? 'i' : 'k', 39037446Srnordier fat == 32 ? "32" : "12/16"); 39137446Srnordier if (opt_f && fat == 32) 39237446Srnordier bpb.rde = 0; 39337446Srnordier if (opt_b) { 39437446Srnordier if (!powerof2(opt_b)) 39537446Srnordier errx(1, "block size (%u) is not a power of 2", opt_b); 39637446Srnordier if (opt_b < bpb.bps) 39737446Srnordier errx(1, "block size (%u) is too small; minimum is %u", 39837446Srnordier opt_b, bpb.bps); 39937446Srnordier if (opt_b > bpb.bps * MAXSPC) 40037446Srnordier errx(1, "block size (%u) is too large; maximum is %u", 40137446Srnordier opt_b, bpb.bps * MAXSPC); 40237446Srnordier bpb.spc = opt_b / bpb.bps; 40337446Srnordier } 40437446Srnordier if (opt_c) { 40537446Srnordier if (!powerof2(opt_c)) 40637446Srnordier errx(1, "sectors/cluster (%u) is not a power of 2", opt_c); 40737446Srnordier bpb.spc = opt_c; 40837446Srnordier } 40937446Srnordier if (opt_r) 41037446Srnordier bpb.res = opt_r; 41137446Srnordier if (opt_n) { 41237446Srnordier if (opt_n > MAXNFT) 41337446Srnordier errx(1, "number of FATs (%u) is too large; maximum is %u", 41437446Srnordier opt_n, MAXNFT); 41537446Srnordier bpb.nft = opt_n; 41637446Srnordier } 41737446Srnordier if (opt_e) 41837446Srnordier bpb.rde = opt_e; 41937446Srnordier if (mflag) { 42037446Srnordier if (opt_m < 0xf0) 42141586Srnordier errx(1, "illegal media descriptor (%#x)", opt_m); 42237446Srnordier bpb.mid = opt_m; 42337446Srnordier } 42437446Srnordier if (opt_a) 42537446Srnordier bpb.bspf = opt_a; 42637446Srnordier if (opt_i) 42737446Srnordier bpb.infs = opt_i; 42837446Srnordier if (opt_k) 42937446Srnordier bpb.bkbs = opt_k; 43037446Srnordier bss = 1; 43137446Srnordier bname = NULL; 43237446Srnordier fd1 = -1; 43337446Srnordier if (opt_B) { 43437446Srnordier bname = opt_B; 43537446Srnordier if (!strchr(bname, '/')) { 43642261Sjkh snprintf(buf, sizeof(buf), "/boot/%s", bname); 43737446Srnordier if (!(bname = strdup(buf))) 43837446Srnordier err(1, NULL); 43937446Srnordier } 44037446Srnordier if ((fd1 = open(bname, O_RDONLY)) == -1 || fstat(fd1, &sb)) 44137446Srnordier err(1, "%s", bname); 44237446Srnordier if (!S_ISREG(sb.st_mode) || sb.st_size % bpb.bps || 44337446Srnordier sb.st_size < bpb.bps || sb.st_size > bpb.bps * MAXU16) 44437446Srnordier errx(1, "%s: inappropriate file type or format", bname); 44537446Srnordier bss = sb.st_size / bpb.bps; 44637446Srnordier } 44737446Srnordier if (!bpb.nft) 44837446Srnordier bpb.nft = 2; 44948954Sbillf if (!fat) { 45037446Srnordier if (bpb.bsec < (bpb.res ? bpb.res : bss) + 45137446Srnordier howmany((RESFTE + (bpb.spc ? MINCLS16 : MAXCLS12 + 1)) * 45237446Srnordier ((bpb.spc ? 16 : 12) / BPN), bpb.bps * NPB) * 45337446Srnordier bpb.nft + 45437446Srnordier howmany(bpb.rde ? bpb.rde : DEFRDE, 45537446Srnordier bpb.bps / sizeof(struct de)) + 45637446Srnordier (bpb.spc ? MINCLS16 : MAXCLS12 + 1) * 45737446Srnordier (bpb.spc ? bpb.spc : howmany(DEFBLK, bpb.bps))) 45837446Srnordier fat = 12; 45937446Srnordier else if (bpb.rde || bpb.bsec < 46037446Srnordier (bpb.res ? bpb.res : bss) + 46137446Srnordier howmany((RESFTE + MAXCLS16) * 2, bpb.bps) * bpb.nft + 46237446Srnordier howmany(DEFRDE, bpb.bps / sizeof(struct de)) + 46337446Srnordier (MAXCLS16 + 1) * 46437446Srnordier (bpb.spc ? bpb.spc : howmany(8192, bpb.bps))) 46537446Srnordier fat = 16; 46637446Srnordier else 46737446Srnordier fat = 32; 46848954Sbillf } 46937446Srnordier x = bss; 47037446Srnordier if (fat == 32) { 47137446Srnordier if (!bpb.infs) { 47237446Srnordier if (x == MAXU16 || x == bpb.bkbs) 47337446Srnordier errx(1, "no room for info sector"); 47437446Srnordier bpb.infs = x; 47537446Srnordier } 47637446Srnordier if (bpb.infs != MAXU16 && x <= bpb.infs) 47737446Srnordier x = bpb.infs + 1; 47837446Srnordier if (!bpb.bkbs) { 47937446Srnordier if (x == MAXU16) 48037446Srnordier errx(1, "no room for backup sector"); 48137446Srnordier bpb.bkbs = x; 48237446Srnordier } else if (bpb.bkbs != MAXU16 && bpb.bkbs == bpb.infs) 48337446Srnordier errx(1, "backup sector would overwrite info sector"); 48437446Srnordier if (bpb.bkbs != MAXU16 && x <= bpb.bkbs) 48537446Srnordier x = bpb.bkbs + 1; 48637446Srnordier } 48737446Srnordier if (!bpb.res) 48837446Srnordier bpb.res = fat == 32 ? MAX(x, MAX(16384 / bpb.bps, 4)) : x; 48937446Srnordier else if (bpb.res < x) 49037446Srnordier errx(1, "too few reserved sectors"); 49137446Srnordier if (fat != 32 && !bpb.rde) 49237446Srnordier bpb.rde = DEFRDE; 49337446Srnordier rds = howmany(bpb.rde, bpb.bps / sizeof(struct de)); 49437446Srnordier if (!bpb.spc) 49537446Srnordier for (bpb.spc = howmany(fat == 16 ? DEFBLK16 : DEFBLK, bpb.bps); 49637446Srnordier bpb.spc < MAXSPC && 49737446Srnordier bpb.res + 49837446Srnordier howmany((RESFTE + maxcls(fat)) * (fat / BPN), 49937446Srnordier bpb.bps * NPB) * bpb.nft + 50037446Srnordier rds + 50137446Srnordier (u_int64_t)(maxcls(fat) + 1) * bpb.spc <= bpb.bsec; 50237446Srnordier bpb.spc <<= 1); 50337446Srnordier if (fat != 32 && bpb.bspf > MAXU16) 50437446Srnordier errx(1, "too many sectors/FAT for FAT12/16"); 50537446Srnordier x1 = bpb.res + rds; 50637446Srnordier x = bpb.bspf ? bpb.bspf : 1; 50737446Srnordier if (x1 + (u_int64_t)x * bpb.nft > bpb.bsec) 508102231Strhodes errx(1, "meta data exceeds file system size"); 50937446Srnordier x1 += x * bpb.nft; 51037446Srnordier x = (u_int64_t)(bpb.bsec - x1) * bpb.bps * NPB / 51137446Srnordier (bpb.spc * bpb.bps * NPB + fat / BPN * bpb.nft); 51237446Srnordier x2 = howmany((RESFTE + MIN(x, maxcls(fat))) * (fat / BPN), 51337446Srnordier bpb.bps * NPB); 51437446Srnordier if (!bpb.bspf) { 51537446Srnordier bpb.bspf = x2; 51637446Srnordier x1 += (bpb.bspf - 1) * bpb.nft; 51737446Srnordier } 51837446Srnordier cls = (bpb.bsec - x1) / bpb.spc; 51937446Srnordier x = (u_int64_t)bpb.bspf * bpb.bps * NPB / (fat / BPN) - RESFTE; 52037446Srnordier if (cls > x) 52137446Srnordier cls = x; 52237446Srnordier if (bpb.bspf < x2) 523102231Strhodes warnx("warning: sectors/FAT limits file system to %u clusters", 52437446Srnordier cls); 52537446Srnordier if (cls < mincls(fat)) 52659215Simp errx(1, "%u clusters too few clusters for FAT%u, need %u", cls, fat, 52759215Simp mincls(fat)); 52837446Srnordier if (cls > maxcls(fat)) { 52937446Srnordier cls = maxcls(fat); 53037446Srnordier bpb.bsec = x1 + (cls + 1) * bpb.spc - 1; 531102231Strhodes warnx("warning: FAT type limits file system to %u sectors", 53237446Srnordier bpb.bsec); 53337446Srnordier } 53437446Srnordier printf("%s: %u sector%s in %u FAT%u cluster%s " 53537446Srnordier "(%u bytes/cluster)\n", fname, cls * bpb.spc, 53637446Srnordier cls * bpb.spc == 1 ? "" : "s", cls, fat, 53737446Srnordier cls == 1 ? "" : "s", bpb.bps * bpb.spc); 53837446Srnordier if (!bpb.mid) 53937446Srnordier bpb.mid = !bpb.hid ? 0xf0 : 0xf8; 54037446Srnordier if (fat == 32) 54137446Srnordier bpb.rdcl = RESFTE; 54237759Srnordier if (bpb.hid + bpb.bsec <= MAXU16) { 54337446Srnordier bpb.sec = bpb.bsec; 54437446Srnordier bpb.bsec = 0; 54537446Srnordier } 54637446Srnordier if (fat != 32) { 54737446Srnordier bpb.spf = bpb.bspf; 54837446Srnordier bpb.bspf = 0; 54937446Srnordier } 55037446Srnordier print_bpb(&bpb); 55137446Srnordier if (!opt_N) { 55237446Srnordier gettimeofday(&tv, NULL); 55340487Sbde now = tv.tv_sec; 55440487Sbde tm = localtime(&now); 55537446Srnordier if (!(img = malloc(bpb.bps))) 55637446Srnordier err(1, NULL); 55737446Srnordier dir = bpb.res + (bpb.spf ? bpb.spf : bpb.bspf) * bpb.nft; 55837446Srnordier for (lsn = 0; lsn < dir + (fat == 32 ? bpb.spc : rds); lsn++) { 55937446Srnordier x = lsn; 56037446Srnordier if (opt_B && 56137446Srnordier fat == 32 && bpb.bkbs != MAXU16 && 56237446Srnordier bss <= bpb.bkbs && x >= bpb.bkbs) { 56337446Srnordier x -= bpb.bkbs; 56437446Srnordier if (!x && lseek(fd1, 0, SEEK_SET)) 56537446Srnordier err(1, "%s", bname); 56637446Srnordier } 56737446Srnordier if (opt_B && x < bss) { 56837446Srnordier if ((n = read(fd1, img, bpb.bps)) == -1) 56937446Srnordier err(1, "%s", bname); 570140384Sdelphij if ((unsigned)n != bpb.bps) 57137446Srnordier errx(1, "%s: can't read sector %u", bname, x); 57237446Srnordier } else 57337446Srnordier memset(img, 0, bpb.bps); 57437446Srnordier if (!lsn || 57537446Srnordier (fat == 32 && bpb.bkbs != MAXU16 && lsn == bpb.bkbs)) { 57637446Srnordier x1 = sizeof(struct bs); 57737446Srnordier bsbpb = (struct bsbpb *)(img + x1); 57837446Srnordier mk2(bsbpb->bps, bpb.bps); 57937446Srnordier mk1(bsbpb->spc, bpb.spc); 58037446Srnordier mk2(bsbpb->res, bpb.res); 58137446Srnordier mk1(bsbpb->nft, bpb.nft); 58237446Srnordier mk2(bsbpb->rde, bpb.rde); 58337446Srnordier mk2(bsbpb->sec, bpb.sec); 58437446Srnordier mk1(bsbpb->mid, bpb.mid); 58537446Srnordier mk2(bsbpb->spf, bpb.spf); 58637446Srnordier mk2(bsbpb->spt, bpb.spt); 58737446Srnordier mk2(bsbpb->hds, bpb.hds); 58837446Srnordier mk4(bsbpb->hid, bpb.hid); 58937446Srnordier mk4(bsbpb->bsec, bpb.bsec); 59037446Srnordier x1 += sizeof(struct bsbpb); 59137446Srnordier if (fat == 32) { 59237446Srnordier bsxbpb = (struct bsxbpb *)(img + x1); 59337446Srnordier mk4(bsxbpb->bspf, bpb.bspf); 59437446Srnordier mk2(bsxbpb->xflg, 0); 59537446Srnordier mk2(bsxbpb->vers, 0); 59637446Srnordier mk4(bsxbpb->rdcl, bpb.rdcl); 59737446Srnordier mk2(bsxbpb->infs, bpb.infs); 59837446Srnordier mk2(bsxbpb->bkbs, bpb.bkbs); 59937446Srnordier x1 += sizeof(struct bsxbpb); 60037446Srnordier } 60137446Srnordier bsx = (struct bsx *)(img + x1); 60237446Srnordier mk1(bsx->sig, 0x29); 60337446Srnordier if (Iflag) 60437446Srnordier x = opt_I; 60537446Srnordier else 60637446Srnordier x = (((u_int)(1 + tm->tm_mon) << 8 | 60737446Srnordier (u_int)tm->tm_mday) + 60837446Srnordier ((u_int)tm->tm_sec << 8 | 60937446Srnordier (u_int)(tv.tv_usec / 10))) << 16 | 61037446Srnordier ((u_int)(1900 + tm->tm_year) + 61137446Srnordier ((u_int)tm->tm_hour << 8 | 61237446Srnordier (u_int)tm->tm_min)); 61337446Srnordier mk4(bsx->volid, x); 61437446Srnordier mklabel(bsx->label, opt_L ? opt_L : "NO NAME"); 61537446Srnordier sprintf(buf, "FAT%u", fat); 61637446Srnordier setstr(bsx->type, buf, sizeof(bsx->type)); 61737446Srnordier if (!opt_B) { 61837446Srnordier x1 += sizeof(struct bsx); 61937446Srnordier bs = (struct bs *)img; 62037446Srnordier mk1(bs->jmp[0], 0xeb); 62137446Srnordier mk1(bs->jmp[1], x1 - 2); 62237446Srnordier mk1(bs->jmp[2], 0x90); 62337446Srnordier setstr(bs->oem, opt_O ? opt_O : "BSD 4.4", 62437446Srnordier sizeof(bs->oem)); 62537446Srnordier memcpy(img + x1, bootcode, sizeof(bootcode)); 62637446Srnordier mk2(img + bpb.bps - 2, DOSMAGIC); 62737446Srnordier } 62837446Srnordier } else if (fat == 32 && bpb.infs != MAXU16 && 62937446Srnordier (lsn == bpb.infs || 63037446Srnordier (bpb.bkbs != MAXU16 && 63137446Srnordier lsn == bpb.bkbs + bpb.infs))) { 63237446Srnordier mk4(img, 0x41615252); 63337446Srnordier mk4(img + bpb.bps - 28, 0x61417272); 63437446Srnordier mk4(img + bpb.bps - 24, 0xffffffff); 63537759Srnordier mk4(img + bpb.bps - 20, bpb.rdcl); 63637446Srnordier mk2(img + bpb.bps - 2, DOSMAGIC); 63737446Srnordier } else if (lsn >= bpb.res && lsn < dir && 63837446Srnordier !((lsn - bpb.res) % 63937446Srnordier (bpb.spf ? bpb.spf : bpb.bspf))) { 64037446Srnordier mk1(img[0], bpb.mid); 64137446Srnordier for (x = 1; x < fat * (fat == 32 ? 3 : 2) / 8; x++) 64237446Srnordier mk1(img[x], fat == 32 && x % 4 == 3 ? 0x0f : 0xff); 64337446Srnordier } else if (lsn == dir && opt_L) { 64437759Srnordier de = (struct de *)img; 64537446Srnordier mklabel(de->namext, opt_L); 64637446Srnordier mk1(de->attr, 050); 64737446Srnordier x = (u_int)tm->tm_hour << 11 | 64837446Srnordier (u_int)tm->tm_min << 5 | 64937446Srnordier (u_int)tm->tm_sec >> 1; 65037446Srnordier mk2(de->time, x); 65137446Srnordier x = (u_int)(tm->tm_year - 80) << 9 | 65237446Srnordier (u_int)(tm->tm_mon + 1) << 5 | 65337446Srnordier (u_int)tm->tm_mday; 65437446Srnordier mk2(de->date, x); 65537446Srnordier } 65637446Srnordier if ((n = write(fd, img, bpb.bps)) == -1) 65737446Srnordier err(1, "%s", fname); 658140384Sdelphij if ((unsigned)n != bpb.bps) 65937446Srnordier errx(1, "%s: can't write sector %u", fname, lsn); 66037446Srnordier } 66137446Srnordier } 66237446Srnordier return 0; 66337446Srnordier} 66437446Srnordier 66537446Srnordier/* 666102231Strhodes * Exit with error if file system is mounted. 66737446Srnordier */ 66837446Srnordierstatic void 66937446Srnordiercheck_mounted(const char *fname, mode_t mode) 67037446Srnordier{ 67137446Srnordier struct statfs *mp; 67237446Srnordier const char *s1, *s2; 67337446Srnordier size_t len; 67437446Srnordier int n, r; 67537446Srnordier 67637446Srnordier if (!(n = getmntinfo(&mp, MNT_NOWAIT))) 67737446Srnordier err(1, "getmntinfo"); 67837446Srnordier len = strlen(_PATH_DEV); 67937446Srnordier s1 = fname; 68037446Srnordier if (!strncmp(s1, _PATH_DEV, len)) 68137446Srnordier s1 += len; 68237446Srnordier r = S_ISCHR(mode) && s1 != fname && *s1 == 'r'; 68337446Srnordier for (; n--; mp++) { 68437446Srnordier s2 = mp->f_mntfromname; 68537446Srnordier if (!strncmp(s2, _PATH_DEV, len)) 68637446Srnordier s2 += len; 68737446Srnordier if ((r && s2 != mp->f_mntfromname && !strcmp(s1 + 1, s2)) || 68837446Srnordier !strcmp(s1, s2)) 68937446Srnordier errx(1, "%s is mounted on %s", fname, mp->f_mntonname); 69037446Srnordier } 69137446Srnordier} 69237446Srnordier 69337446Srnordier/* 69437446Srnordier * Get a standard format. 69537446Srnordier */ 69637446Srnordierstatic void 69737446Srnordiergetstdfmt(const char *fmt, struct bpb *bpb) 69837446Srnordier{ 69937446Srnordier u_int x, i; 70037446Srnordier 70137446Srnordier x = sizeof(stdfmt) / sizeof(stdfmt[0]); 70237446Srnordier for (i = 0; i < x && strcmp(fmt, stdfmt[i].name); i++); 70337446Srnordier if (i == x) 70437446Srnordier errx(1, "%s: unknown standard format", fmt); 70537446Srnordier *bpb = stdfmt[i].bpb; 70637446Srnordier} 70737446Srnordier 70837446Srnordier/* 70937446Srnordier * Get disk slice, partition, and geometry information. 71037446Srnordier */ 71137446Srnordierstatic void 712140384Sdelphijgetdiskinfo(int fd, const char *fname, const char *dtype, __unused int oflag, 71337446Srnordier struct bpb *bpb) 71437446Srnordier{ 715106372Sscottl struct disklabel *lp, dlp; 716106372Sscottl struct fd_type type; 717140384Sdelphij off_t ms, hs = 0; 71837446Srnordier 719106372Sscottl lp = NULL; 720106372Sscottl 721106372Sscottl /* If the user specified a disk type, try to use that */ 722106372Sscottl if (dtype != NULL) { 723106372Sscottl lp = getdiskbyname(dtype); 72437446Srnordier } 725106372Sscottl 726106372Sscottl /* Maybe it's a floppy drive */ 727106372Sscottl if (lp == NULL) { 728106372Sscottl if (ioctl(fd, DIOCGMEDIASIZE, &ms) == -1) 729125916Stjr errx(1, "Cannot get disk size, %s", strerror(errno)); 730106372Sscottl if (ioctl(fd, FD_GTYPE, &type) != -1) { 731106372Sscottl dlp.d_secsize = 128 << type.secsize; 732106372Sscottl dlp.d_nsectors = type.sectrac; 733106372Sscottl dlp.d_ntracks = type.heads; 734106372Sscottl dlp.d_secperunit = ms / dlp.d_secsize; 735106372Sscottl lp = &dlp; 73637446Srnordier } 73737446Srnordier } 738106372Sscottl 739106372Sscottl /* Maybe it's a fixed drive */ 740106372Sscottl if (lp == NULL) { 741106372Sscottl if (ioctl(fd, DIOCGDINFO, &dlp) == -1) { 742106372Sscottl if (ioctl(fd, DIOCGSECTORSIZE, &dlp.d_secsize) == -1) 743125916Stjr errx(1, "Cannot get sector size, %s", strerror(errno)); 744106372Sscottl if (ioctl(fd, DIOCGFWSECTORS, &dlp.d_nsectors) == -1) 745125916Stjr errx(1, "Cannot get number of sectors, %s", strerror(errno)); 746106372Sscottl if (ioctl(fd, DIOCGFWHEADS, &dlp.d_ntracks)== -1) 747125916Stjr errx(1, "Cannot get number of heads, %s", strerror(errno)); 748106372Sscottl dlp.d_secperunit = ms / dlp.d_secsize; 74937446Srnordier } 750106372Sscottl 751106372Sscottl hs = (ms / dlp.d_secsize) - dlp.d_secperunit; 752106372Sscottl lp = &dlp; 75337446Srnordier } 754106372Sscottl 755106372Sscottl if (bpb->bps == 0) 756106372Sscottl bpb->bps = ckgeom(fname, lp->d_secsize, "bytes/sector"); 757106372Sscottl if (bpb->spt == 0) 758106372Sscottl bpb->spt = ckgeom(fname, lp->d_nsectors, "sectors/track"); 759106372Sscottl if (bpb->hds == 0) 760106372Sscottl bpb->hds = ckgeom(fname, lp->d_ntracks, "drive heads"); 761106372Sscottl if (bpb->bsec == 0) 762106372Sscottl bpb->bsec = lp->d_secperunit; 763106372Sscottl if (bpb->hid == 0) 764106372Sscottl bpb->hid = hs; 76537446Srnordier} 76637446Srnordier 76737446Srnordier/* 76837446Srnordier * Print out BPB values. 76937446Srnordier */ 77037446Srnordierstatic void 77137446Srnordierprint_bpb(struct bpb *bpb) 77237446Srnordier{ 77337446Srnordier printf("bps=%u spc=%u res=%u nft=%u", bpb->bps, bpb->spc, bpb->res, 77437446Srnordier bpb->nft); 77537446Srnordier if (bpb->rde) 77637446Srnordier printf(" rde=%u", bpb->rde); 77737446Srnordier if (bpb->sec) 77837446Srnordier printf(" sec=%u", bpb->sec); 77941586Srnordier printf(" mid=%#x", bpb->mid); 78037446Srnordier if (bpb->spf) 78137446Srnordier printf(" spf=%u", bpb->spf); 78237446Srnordier printf(" spt=%u hds=%u hid=%u", bpb->spt, bpb->hds, bpb->hid); 78337446Srnordier if (bpb->bsec) 78437446Srnordier printf(" bsec=%u", bpb->bsec); 78537446Srnordier if (!bpb->spf) { 78637446Srnordier printf(" bspf=%u rdcl=%u", bpb->bspf, bpb->rdcl); 78737446Srnordier printf(" infs="); 78841586Srnordier printf(bpb->infs == MAXU16 ? "%#x" : "%u", bpb->infs); 78937446Srnordier printf(" bkbs="); 79041586Srnordier printf(bpb->bkbs == MAXU16 ? "%#x" : "%u", bpb->bkbs); 79137446Srnordier } 79237446Srnordier printf("\n"); 79337446Srnordier} 79437446Srnordier 79537446Srnordier/* 79637446Srnordier * Check a disk geometry value. 79737446Srnordier */ 79837446Srnordierstatic u_int 79937446Srnordierckgeom(const char *fname, u_int val, const char *msg) 80037446Srnordier{ 80137446Srnordier if (!val) 80237446Srnordier errx(1, "%s: no default %s", fname, msg); 80337446Srnordier if (val > MAXU16) 804106372Sscottl errx(1, "%s: illegal %s %d", fname, msg, val); 80537446Srnordier return val; 80637446Srnordier} 80737446Srnordier 80837446Srnordier/* 80937446Srnordier * Convert and check a numeric option argument. 81037446Srnordier */ 81137446Srnordierstatic u_int 81237446Srnordierargtou(const char *arg, u_int lo, u_int hi, const char *msg) 81337446Srnordier{ 81437446Srnordier char *s; 81537446Srnordier u_long x; 81637446Srnordier 81737446Srnordier errno = 0; 81837446Srnordier x = strtoul(arg, &s, 0); 81937446Srnordier if (errno || !*arg || *s || x < lo || x > hi) 82037446Srnordier errx(1, "%s: bad %s", arg, msg); 82137446Srnordier return x; 82237446Srnordier} 82337446Srnordier 82437446Srnordier/* 82537446Srnordier * Check a volume label. 82637446Srnordier */ 82737446Srnordierstatic int 82837446Srnordieroklabel(const char *src) 82937446Srnordier{ 83037446Srnordier int c, i; 83137446Srnordier 83237446Srnordier for (i = 0; i <= 11; i++) { 83337446Srnordier c = (u_char)*src++; 83437446Srnordier if (c < ' ' + !i || strchr("\"*+,./:;<=>?[\\]|", c)) 83537446Srnordier break; 83637446Srnordier } 83737446Srnordier return i && !c; 83837446Srnordier} 83937446Srnordier 84037446Srnordier/* 84137446Srnordier * Make a volume label. 84237446Srnordier */ 84337446Srnordierstatic void 84437446Srnordiermklabel(u_int8_t *dest, const char *src) 84537446Srnordier{ 84637446Srnordier int c, i; 84737446Srnordier 84837446Srnordier for (i = 0; i < 11; i++) { 84937446Srnordier c = *src ? toupper(*src++) : ' '; 85037446Srnordier *dest++ = !i && c == '\xe5' ? 5 : c; 85137446Srnordier } 85237446Srnordier} 85337446Srnordier 85437446Srnordier/* 85537446Srnordier * Copy string, padding with spaces. 85637446Srnordier */ 85737446Srnordierstatic void 85837446Srnordiersetstr(u_int8_t *dest, const char *src, size_t len) 85937446Srnordier{ 86037446Srnordier while (len--) 86137446Srnordier *dest++ = *src ? *src++ : ' '; 86237446Srnordier} 86337446Srnordier 86437446Srnordier/* 86537446Srnordier * Print usage message. 86637446Srnordier */ 86737446Srnordierstatic void 86837446Srnordierusage(void) 86937446Srnordier{ 87037708Srnordier fprintf(stderr, 87137708Srnordier "usage: newfs_msdos [ -options ] special [disktype]\n"); 87237708Srnordier fprintf(stderr, "where the options are:\n"); 873102231Strhodes fprintf(stderr, "\t-N don't create file system: " 87437708Srnordier "just print out parameters\n"); 87537708Srnordier fprintf(stderr, "\t-B get bootstrap from file\n"); 87637708Srnordier fprintf(stderr, "\t-F FAT type (12, 16, or 32)\n"); 87737708Srnordier fprintf(stderr, "\t-I volume ID\n"); 87837708Srnordier fprintf(stderr, "\t-L volume label\n"); 87937708Srnordier fprintf(stderr, "\t-O OEM string\n"); 88037708Srnordier fprintf(stderr, "\t-S bytes/sector\n"); 88137708Srnordier fprintf(stderr, "\t-a sectors/FAT\n"); 88237708Srnordier fprintf(stderr, "\t-b block size\n"); 88337708Srnordier fprintf(stderr, "\t-c sectors/cluster\n"); 88437708Srnordier fprintf(stderr, "\t-e root directory entries\n"); 88537708Srnordier fprintf(stderr, "\t-f standard format\n"); 88637708Srnordier fprintf(stderr, "\t-h drive heads\n"); 887102231Strhodes fprintf(stderr, "\t-i file system info sector\n"); 88837708Srnordier fprintf(stderr, "\t-k backup boot sector\n"); 88937708Srnordier fprintf(stderr, "\t-m media descriptor\n"); 89037708Srnordier fprintf(stderr, "\t-n number of FATs\n"); 89137708Srnordier fprintf(stderr, "\t-o hidden sectors\n"); 89237708Srnordier fprintf(stderr, "\t-r reserved sectors\n"); 893102231Strhodes fprintf(stderr, "\t-s file system size (sectors)\n"); 89437708Srnordier fprintf(stderr, "\t-u sectors/track\n"); 89537446Srnordier exit(1); 89637446Srnordier} 897