newfs_msdos.c revision 185587
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 185587 2008-12-03 18:22:36Z luigi $"; 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 */ 57170166Strhodes#define MINBPS 512 /* 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 *); 222185587Sluigistatic off_t argtooff(const char *, const char *); 22337446Srnordierstatic int oklabel(const char *); 22437446Srnordierstatic void mklabel(u_int8_t *, const char *); 22537446Srnordierstatic void setstr(u_int8_t *, const char *, size_t); 22637446Srnordierstatic void usage(void); 22737446Srnordier 22837446Srnordier/* 229102231Strhodes * Construct a FAT12, FAT16, or FAT32 file system. 23037446Srnordier */ 23137446Srnordierint 23237446Srnordiermain(int argc, char *argv[]) 23337446Srnordier{ 234185587Sluigi static char opts[] = "@:NB:C:F:I:L:O:S:a:b:c:e:f:h:i:k:m:n:o:r:s:u:"; 23537446Srnordier static const char *opt_B, *opt_L, *opt_O, *opt_f; 23637446Srnordier static u_int opt_F, opt_I, opt_S, opt_a, opt_b, opt_c, opt_e; 23737446Srnordier static u_int opt_h, opt_i, opt_k, opt_m, opt_n, opt_o, opt_r; 23837446Srnordier static u_int opt_s, opt_u; 23937446Srnordier static int opt_N; 24037446Srnordier static int Iflag, mflag, oflag; 24137446Srnordier char buf[MAXPATHLEN]; 24237446Srnordier struct stat sb; 24337446Srnordier struct timeval tv; 24437446Srnordier struct bpb bpb; 24537446Srnordier struct tm *tm; 24637446Srnordier struct bs *bs; 24737446Srnordier struct bsbpb *bsbpb; 24837446Srnordier struct bsxbpb *bsxbpb; 24937446Srnordier struct bsx *bsx; 25037446Srnordier struct de *de; 25137446Srnordier u_int8_t *img; 25237446Srnordier const char *fname, *dtype, *bname; 25337446Srnordier ssize_t n; 25440487Sbde time_t now; 25537446Srnordier u_int fat, bss, rds, cls, dir, lsn, x, x1, x2; 25637446Srnordier int ch, fd, fd1; 257185587Sluigi static off_t opt_create=0, opt_ofs=0; 25837446Srnordier 25937446Srnordier while ((ch = getopt(argc, argv, opts)) != -1) 26037446Srnordier switch (ch) { 261185587Sluigi case '@': 262185587Sluigi opt_ofs = argtooff(optarg, "offset"); 263185587Sluigi break; 26437446Srnordier case 'N': 26537446Srnordier opt_N = 1; 26637446Srnordier break; 26737446Srnordier case 'B': 26837446Srnordier opt_B = optarg; 26937446Srnordier break; 270185587Sluigi case 'C': 271185587Sluigi opt_create = argtooff(optarg, "create size"); 272185587Sluigi break; 27337446Srnordier case 'F': 27437446Srnordier if (strcmp(optarg, "12") && 27537446Srnordier strcmp(optarg, "16") && 27637446Srnordier strcmp(optarg, "32")) 27737446Srnordier errx(1, "%s: bad FAT type", optarg); 27837446Srnordier opt_F = atoi(optarg); 27937446Srnordier break; 28037446Srnordier case 'I': 28137446Srnordier opt_I = argto4(optarg, 0, "volume ID"); 28237446Srnordier Iflag = 1; 28337446Srnordier break; 28437446Srnordier case 'L': 28537446Srnordier if (!oklabel(optarg)) 28637446Srnordier errx(1, "%s: bad volume label", optarg); 28737446Srnordier opt_L = optarg; 28837446Srnordier break; 28937446Srnordier case 'O': 29037446Srnordier if (strlen(optarg) > 8) 29137446Srnordier errx(1, "%s: bad OEM string", optarg); 29237446Srnordier opt_O = optarg; 29337446Srnordier break; 29437446Srnordier case 'S': 29537446Srnordier opt_S = argto2(optarg, 1, "bytes/sector"); 29637446Srnordier break; 29737446Srnordier case 'a': 29837446Srnordier opt_a = argto4(optarg, 1, "sectors/FAT"); 29937446Srnordier break; 30037446Srnordier case 'b': 30137446Srnordier opt_b = argtox(optarg, 1, "block size"); 30237446Srnordier opt_c = 0; 30337446Srnordier break; 30437446Srnordier case 'c': 30537446Srnordier opt_c = argto1(optarg, 1, "sectors/cluster"); 30637446Srnordier opt_b = 0; 30737446Srnordier break; 30837446Srnordier case 'e': 30937446Srnordier opt_e = argto2(optarg, 1, "directory entries"); 31037446Srnordier break; 31137446Srnordier case 'f': 31237446Srnordier opt_f = optarg; 31337446Srnordier break; 31437446Srnordier case 'h': 31537446Srnordier opt_h = argto2(optarg, 1, "drive heads"); 31637446Srnordier break; 31737446Srnordier case 'i': 31837446Srnordier opt_i = argto2(optarg, 1, "info sector"); 31937446Srnordier break; 32037446Srnordier case 'k': 32137446Srnordier opt_k = argto2(optarg, 1, "backup sector"); 32237446Srnordier break; 32337446Srnordier case 'm': 32437446Srnordier opt_m = argto1(optarg, 0, "media descriptor"); 32537446Srnordier mflag = 1; 32637446Srnordier break; 32737446Srnordier case 'n': 32837446Srnordier opt_n = argto1(optarg, 1, "number of FATs"); 32937446Srnordier break; 33037446Srnordier case 'o': 33137446Srnordier opt_o = argto4(optarg, 0, "hidden sectors"); 33237446Srnordier oflag = 1; 33337446Srnordier break; 33437446Srnordier case 'r': 33537446Srnordier opt_r = argto2(optarg, 1, "reserved sectors"); 33637446Srnordier break; 33737446Srnordier case 's': 338102231Strhodes opt_s = argto4(optarg, 1, "file system size"); 33937446Srnordier break; 34037446Srnordier case 'u': 34137446Srnordier opt_u = argto2(optarg, 1, "sectors/track"); 34237446Srnordier break; 34337446Srnordier default: 34437446Srnordier usage(); 34537446Srnordier } 34637446Srnordier argc -= optind; 34737446Srnordier argv += optind; 34837446Srnordier if (argc < 1 || argc > 2) 34937446Srnordier usage(); 35037446Srnordier fname = *argv++; 35137446Srnordier if (!strchr(fname, '/')) { 35263892Sasmodai snprintf(buf, sizeof(buf), "%s%s", _PATH_DEV, fname); 35337446Srnordier if (!(fname = strdup(buf))) 35437446Srnordier err(1, NULL); 35537446Srnordier } 35637446Srnordier dtype = *argv; 357185587Sluigi if (opt_create) { 358185587Sluigi off_t pos; 359185587Sluigi 360185587Sluigi if (opt_N) 361185587Sluigi errx(1, "create (-C) is incompatible with -N"); 362185587Sluigi fd = open(fname, O_RDWR | O_CREAT | O_TRUNC, 0644); 363185587Sluigi if (fd == -1) 364185587Sluigi errx(1, "failed to create %s", fname); 365185587Sluigi pos = lseek(fd, opt_create - 1, SEEK_SET); 366185587Sluigi if (write(fd, "\0", 1) != 1) 367185587Sluigi errx(1, "failed to initialize %lld bytes", opt_create); 368185587Sluigi pos = lseek(fd, 0, SEEK_SET); 369185587Sluigi } else if ((fd = open(fname, opt_N ? O_RDONLY : O_RDWR)) == -1 || 37037446Srnordier fstat(fd, &sb)) 37137446Srnordier err(1, "%s", fname); 37237446Srnordier if (!opt_N) 37337446Srnordier check_mounted(fname, sb.st_mode); 37437446Srnordier if (!S_ISCHR(sb.st_mode)) 375185587Sluigi warnx("warning, %s is not a character device", fname); 376185587Sluigi if (opt_ofs && opt_ofs != lseek(fd, opt_ofs, SEEK_SET)) 377185587Sluigi errx(1, "cannot seek to %lld", opt_ofs); 37837446Srnordier memset(&bpb, 0, sizeof(bpb)); 37937446Srnordier if (opt_f) { 38037446Srnordier getstdfmt(opt_f, &bpb); 38137446Srnordier bpb.bsec = bpb.sec; 38237446Srnordier bpb.sec = 0; 38337446Srnordier bpb.bspf = bpb.spf; 38437446Srnordier bpb.spf = 0; 38537446Srnordier } 38637446Srnordier if (opt_h) 38737446Srnordier bpb.hds = opt_h; 38837446Srnordier if (opt_u) 38937446Srnordier bpb.spt = opt_u; 39037446Srnordier if (opt_S) 39137446Srnordier bpb.bps = opt_S; 39237446Srnordier if (opt_s) 39337446Srnordier bpb.bsec = opt_s; 39437446Srnordier if (oflag) 39537446Srnordier bpb.hid = opt_o; 396185587Sluigi if (!(opt_f || (opt_h && opt_u && opt_S && opt_s && oflag))) { 397185587Sluigi off_t delta; 39837446Srnordier getdiskinfo(fd, fname, dtype, oflag, &bpb); 399185587Sluigi bpb.bsec -= (opt_ofs / bpb.bps); 400185587Sluigi delta = bpb.bsec % bpb.spt; 401185587Sluigi if (delta != 0) { 402185587Sluigi warnx("trim %d sectors to adjust to a multiple of %d", 403185587Sluigi (int)delta, bpb.spt); 404185587Sluigi bpb.bsec -= delta; 405185587Sluigi } 406185587Sluigi if (bpb.spc == 0) { /* set defaults */ 407185587Sluigi if (bpb.bsec <= 6000) /* about 3MB -> 512 bytes */ 408185587Sluigi bpb.spc = 1; 409185587Sluigi else if (bpb.bsec <= (1<<17)) /* 64M -> 4k */ 410185587Sluigi bpb.spc = 8; 411185587Sluigi else if (bpb.bsec <= (1<<19)) /* 256M -> 8k */ 412185587Sluigi bpb.spc = 16; 413185587Sluigi else if (bpb.bsec <= (1<<21)) /* 1G -> 16k */ 414185587Sluigi bpb.spc = 32; 415185587Sluigi else 416185587Sluigi bpb.spc = 64; /* otherwise 32k */ 417185587Sluigi } 418185587Sluigi } 41937446Srnordier if (!powerof2(bpb.bps)) 42037446Srnordier errx(1, "bytes/sector (%u) is not a power of 2", bpb.bps); 42137446Srnordier if (bpb.bps < MINBPS) 42237446Srnordier errx(1, "bytes/sector (%u) is too small; minimum is %u", 42337446Srnordier bpb.bps, MINBPS); 42448954Sbillf if (!(fat = opt_F)) { 42537446Srnordier if (opt_f) 42637446Srnordier fat = 12; 42737446Srnordier else if (!opt_e && (opt_i || opt_k)) 42837446Srnordier fat = 32; 42948954Sbillf } 43037446Srnordier if ((fat == 32 && opt_e) || (fat != 32 && (opt_i || opt_k))) 43137446Srnordier errx(1, "-%c is not a legal FAT%s option", 43237446Srnordier fat == 32 ? 'e' : opt_i ? 'i' : 'k', 43337446Srnordier fat == 32 ? "32" : "12/16"); 43437446Srnordier if (opt_f && fat == 32) 43537446Srnordier bpb.rde = 0; 43637446Srnordier if (opt_b) { 43737446Srnordier if (!powerof2(opt_b)) 43837446Srnordier errx(1, "block size (%u) is not a power of 2", opt_b); 43937446Srnordier if (opt_b < bpb.bps) 44037446Srnordier errx(1, "block size (%u) is too small; minimum is %u", 44137446Srnordier opt_b, bpb.bps); 44237446Srnordier if (opt_b > bpb.bps * MAXSPC) 44337446Srnordier errx(1, "block size (%u) is too large; maximum is %u", 44437446Srnordier opt_b, bpb.bps * MAXSPC); 44537446Srnordier bpb.spc = opt_b / bpb.bps; 44637446Srnordier } 44737446Srnordier if (opt_c) { 44837446Srnordier if (!powerof2(opt_c)) 44937446Srnordier errx(1, "sectors/cluster (%u) is not a power of 2", opt_c); 45037446Srnordier bpb.spc = opt_c; 45137446Srnordier } 45237446Srnordier if (opt_r) 45337446Srnordier bpb.res = opt_r; 45437446Srnordier if (opt_n) { 45537446Srnordier if (opt_n > MAXNFT) 45637446Srnordier errx(1, "number of FATs (%u) is too large; maximum is %u", 45737446Srnordier opt_n, MAXNFT); 45837446Srnordier bpb.nft = opt_n; 45937446Srnordier } 46037446Srnordier if (opt_e) 46137446Srnordier bpb.rde = opt_e; 46237446Srnordier if (mflag) { 46337446Srnordier if (opt_m < 0xf0) 46441586Srnordier errx(1, "illegal media descriptor (%#x)", opt_m); 46537446Srnordier bpb.mid = opt_m; 46637446Srnordier } 46737446Srnordier if (opt_a) 46837446Srnordier bpb.bspf = opt_a; 46937446Srnordier if (opt_i) 47037446Srnordier bpb.infs = opt_i; 47137446Srnordier if (opt_k) 47237446Srnordier bpb.bkbs = opt_k; 47337446Srnordier bss = 1; 47437446Srnordier bname = NULL; 47537446Srnordier fd1 = -1; 47637446Srnordier if (opt_B) { 47737446Srnordier bname = opt_B; 47837446Srnordier if (!strchr(bname, '/')) { 47942261Sjkh snprintf(buf, sizeof(buf), "/boot/%s", bname); 48037446Srnordier if (!(bname = strdup(buf))) 48137446Srnordier err(1, NULL); 48237446Srnordier } 48337446Srnordier if ((fd1 = open(bname, O_RDONLY)) == -1 || fstat(fd1, &sb)) 48437446Srnordier err(1, "%s", bname); 48537446Srnordier if (!S_ISREG(sb.st_mode) || sb.st_size % bpb.bps || 48637446Srnordier sb.st_size < bpb.bps || sb.st_size > bpb.bps * MAXU16) 48737446Srnordier errx(1, "%s: inappropriate file type or format", bname); 48837446Srnordier bss = sb.st_size / bpb.bps; 48937446Srnordier } 49037446Srnordier if (!bpb.nft) 49137446Srnordier bpb.nft = 2; 49248954Sbillf if (!fat) { 49337446Srnordier if (bpb.bsec < (bpb.res ? bpb.res : bss) + 49437446Srnordier howmany((RESFTE + (bpb.spc ? MINCLS16 : MAXCLS12 + 1)) * 49537446Srnordier ((bpb.spc ? 16 : 12) / BPN), bpb.bps * NPB) * 49637446Srnordier bpb.nft + 49737446Srnordier howmany(bpb.rde ? bpb.rde : DEFRDE, 49837446Srnordier bpb.bps / sizeof(struct de)) + 49937446Srnordier (bpb.spc ? MINCLS16 : MAXCLS12 + 1) * 50037446Srnordier (bpb.spc ? bpb.spc : howmany(DEFBLK, bpb.bps))) 50137446Srnordier fat = 12; 50237446Srnordier else if (bpb.rde || bpb.bsec < 50337446Srnordier (bpb.res ? bpb.res : bss) + 50437446Srnordier howmany((RESFTE + MAXCLS16) * 2, bpb.bps) * bpb.nft + 50537446Srnordier howmany(DEFRDE, bpb.bps / sizeof(struct de)) + 50637446Srnordier (MAXCLS16 + 1) * 50737446Srnordier (bpb.spc ? bpb.spc : howmany(8192, bpb.bps))) 50837446Srnordier fat = 16; 50937446Srnordier else 51037446Srnordier fat = 32; 51148954Sbillf } 51237446Srnordier x = bss; 51337446Srnordier if (fat == 32) { 51437446Srnordier if (!bpb.infs) { 51537446Srnordier if (x == MAXU16 || x == bpb.bkbs) 51637446Srnordier errx(1, "no room for info sector"); 51737446Srnordier bpb.infs = x; 51837446Srnordier } 51937446Srnordier if (bpb.infs != MAXU16 && x <= bpb.infs) 52037446Srnordier x = bpb.infs + 1; 52137446Srnordier if (!bpb.bkbs) { 52237446Srnordier if (x == MAXU16) 52337446Srnordier errx(1, "no room for backup sector"); 52437446Srnordier bpb.bkbs = x; 52537446Srnordier } else if (bpb.bkbs != MAXU16 && bpb.bkbs == bpb.infs) 52637446Srnordier errx(1, "backup sector would overwrite info sector"); 52737446Srnordier if (bpb.bkbs != MAXU16 && x <= bpb.bkbs) 52837446Srnordier x = bpb.bkbs + 1; 52937446Srnordier } 53037446Srnordier if (!bpb.res) 53137446Srnordier bpb.res = fat == 32 ? MAX(x, MAX(16384 / bpb.bps, 4)) : x; 53237446Srnordier else if (bpb.res < x) 53337446Srnordier errx(1, "too few reserved sectors"); 53437446Srnordier if (fat != 32 && !bpb.rde) 53537446Srnordier bpb.rde = DEFRDE; 53637446Srnordier rds = howmany(bpb.rde, bpb.bps / sizeof(struct de)); 53737446Srnordier if (!bpb.spc) 53837446Srnordier for (bpb.spc = howmany(fat == 16 ? DEFBLK16 : DEFBLK, bpb.bps); 53937446Srnordier bpb.spc < MAXSPC && 54037446Srnordier bpb.res + 54137446Srnordier howmany((RESFTE + maxcls(fat)) * (fat / BPN), 54237446Srnordier bpb.bps * NPB) * bpb.nft + 54337446Srnordier rds + 54437446Srnordier (u_int64_t)(maxcls(fat) + 1) * bpb.spc <= bpb.bsec; 54537446Srnordier bpb.spc <<= 1); 54637446Srnordier if (fat != 32 && bpb.bspf > MAXU16) 54737446Srnordier errx(1, "too many sectors/FAT for FAT12/16"); 54837446Srnordier x1 = bpb.res + rds; 54937446Srnordier x = bpb.bspf ? bpb.bspf : 1; 55037446Srnordier if (x1 + (u_int64_t)x * bpb.nft > bpb.bsec) 551102231Strhodes errx(1, "meta data exceeds file system size"); 55237446Srnordier x1 += x * bpb.nft; 55337446Srnordier x = (u_int64_t)(bpb.bsec - x1) * bpb.bps * NPB / 55437446Srnordier (bpb.spc * bpb.bps * NPB + fat / BPN * bpb.nft); 55537446Srnordier x2 = howmany((RESFTE + MIN(x, maxcls(fat))) * (fat / BPN), 55637446Srnordier bpb.bps * NPB); 55737446Srnordier if (!bpb.bspf) { 55837446Srnordier bpb.bspf = x2; 55937446Srnordier x1 += (bpb.bspf - 1) * bpb.nft; 56037446Srnordier } 56137446Srnordier cls = (bpb.bsec - x1) / bpb.spc; 56237446Srnordier x = (u_int64_t)bpb.bspf * bpb.bps * NPB / (fat / BPN) - RESFTE; 56337446Srnordier if (cls > x) 56437446Srnordier cls = x; 56537446Srnordier if (bpb.bspf < x2) 566102231Strhodes warnx("warning: sectors/FAT limits file system to %u clusters", 56737446Srnordier cls); 56837446Srnordier if (cls < mincls(fat)) 56959215Simp errx(1, "%u clusters too few clusters for FAT%u, need %u", cls, fat, 57059215Simp mincls(fat)); 57137446Srnordier if (cls > maxcls(fat)) { 57237446Srnordier cls = maxcls(fat); 57337446Srnordier bpb.bsec = x1 + (cls + 1) * bpb.spc - 1; 574102231Strhodes warnx("warning: FAT type limits file system to %u sectors", 57537446Srnordier bpb.bsec); 57637446Srnordier } 57737446Srnordier printf("%s: %u sector%s in %u FAT%u cluster%s " 57837446Srnordier "(%u bytes/cluster)\n", fname, cls * bpb.spc, 57937446Srnordier cls * bpb.spc == 1 ? "" : "s", cls, fat, 58037446Srnordier cls == 1 ? "" : "s", bpb.bps * bpb.spc); 58137446Srnordier if (!bpb.mid) 58237446Srnordier bpb.mid = !bpb.hid ? 0xf0 : 0xf8; 58337446Srnordier if (fat == 32) 58437446Srnordier bpb.rdcl = RESFTE; 58537759Srnordier if (bpb.hid + bpb.bsec <= MAXU16) { 58637446Srnordier bpb.sec = bpb.bsec; 58737446Srnordier bpb.bsec = 0; 58837446Srnordier } 58937446Srnordier if (fat != 32) { 59037446Srnordier bpb.spf = bpb.bspf; 59137446Srnordier bpb.bspf = 0; 59237446Srnordier } 59337446Srnordier print_bpb(&bpb); 59437446Srnordier if (!opt_N) { 59537446Srnordier gettimeofday(&tv, NULL); 59640487Sbde now = tv.tv_sec; 59740487Sbde tm = localtime(&now); 59837446Srnordier if (!(img = malloc(bpb.bps))) 59937446Srnordier err(1, NULL); 60037446Srnordier dir = bpb.res + (bpb.spf ? bpb.spf : bpb.bspf) * bpb.nft; 60137446Srnordier for (lsn = 0; lsn < dir + (fat == 32 ? bpb.spc : rds); lsn++) { 60237446Srnordier x = lsn; 60337446Srnordier if (opt_B && 60437446Srnordier fat == 32 && bpb.bkbs != MAXU16 && 60537446Srnordier bss <= bpb.bkbs && x >= bpb.bkbs) { 60637446Srnordier x -= bpb.bkbs; 607185587Sluigi if (!x && lseek(fd1, opt_ofs, SEEK_SET)) 60837446Srnordier err(1, "%s", bname); 60937446Srnordier } 61037446Srnordier if (opt_B && x < bss) { 61137446Srnordier if ((n = read(fd1, img, bpb.bps)) == -1) 61237446Srnordier err(1, "%s", bname); 613140384Sdelphij if ((unsigned)n != bpb.bps) 61437446Srnordier errx(1, "%s: can't read sector %u", bname, x); 61537446Srnordier } else 61637446Srnordier memset(img, 0, bpb.bps); 61737446Srnordier if (!lsn || 61837446Srnordier (fat == 32 && bpb.bkbs != MAXU16 && lsn == bpb.bkbs)) { 61937446Srnordier x1 = sizeof(struct bs); 62037446Srnordier bsbpb = (struct bsbpb *)(img + x1); 62137446Srnordier mk2(bsbpb->bps, bpb.bps); 62237446Srnordier mk1(bsbpb->spc, bpb.spc); 62337446Srnordier mk2(bsbpb->res, bpb.res); 62437446Srnordier mk1(bsbpb->nft, bpb.nft); 62537446Srnordier mk2(bsbpb->rde, bpb.rde); 62637446Srnordier mk2(bsbpb->sec, bpb.sec); 62737446Srnordier mk1(bsbpb->mid, bpb.mid); 62837446Srnordier mk2(bsbpb->spf, bpb.spf); 62937446Srnordier mk2(bsbpb->spt, bpb.spt); 63037446Srnordier mk2(bsbpb->hds, bpb.hds); 63137446Srnordier mk4(bsbpb->hid, bpb.hid); 63237446Srnordier mk4(bsbpb->bsec, bpb.bsec); 63337446Srnordier x1 += sizeof(struct bsbpb); 63437446Srnordier if (fat == 32) { 63537446Srnordier bsxbpb = (struct bsxbpb *)(img + x1); 63637446Srnordier mk4(bsxbpb->bspf, bpb.bspf); 63737446Srnordier mk2(bsxbpb->xflg, 0); 63837446Srnordier mk2(bsxbpb->vers, 0); 63937446Srnordier mk4(bsxbpb->rdcl, bpb.rdcl); 64037446Srnordier mk2(bsxbpb->infs, bpb.infs); 64137446Srnordier mk2(bsxbpb->bkbs, bpb.bkbs); 64237446Srnordier x1 += sizeof(struct bsxbpb); 64337446Srnordier } 64437446Srnordier bsx = (struct bsx *)(img + x1); 64537446Srnordier mk1(bsx->sig, 0x29); 64637446Srnordier if (Iflag) 64737446Srnordier x = opt_I; 64837446Srnordier else 64937446Srnordier x = (((u_int)(1 + tm->tm_mon) << 8 | 65037446Srnordier (u_int)tm->tm_mday) + 65137446Srnordier ((u_int)tm->tm_sec << 8 | 65237446Srnordier (u_int)(tv.tv_usec / 10))) << 16 | 65337446Srnordier ((u_int)(1900 + tm->tm_year) + 65437446Srnordier ((u_int)tm->tm_hour << 8 | 65537446Srnordier (u_int)tm->tm_min)); 65637446Srnordier mk4(bsx->volid, x); 65737446Srnordier mklabel(bsx->label, opt_L ? opt_L : "NO NAME"); 65837446Srnordier sprintf(buf, "FAT%u", fat); 65937446Srnordier setstr(bsx->type, buf, sizeof(bsx->type)); 66037446Srnordier if (!opt_B) { 66137446Srnordier x1 += sizeof(struct bsx); 66237446Srnordier bs = (struct bs *)img; 66337446Srnordier mk1(bs->jmp[0], 0xeb); 66437446Srnordier mk1(bs->jmp[1], x1 - 2); 66537446Srnordier mk1(bs->jmp[2], 0x90); 66637446Srnordier setstr(bs->oem, opt_O ? opt_O : "BSD 4.4", 66737446Srnordier sizeof(bs->oem)); 66837446Srnordier memcpy(img + x1, bootcode, sizeof(bootcode)); 669170166Strhodes mk2(img + MINBPS - 2, DOSMAGIC); 67037446Srnordier } 67137446Srnordier } else if (fat == 32 && bpb.infs != MAXU16 && 67237446Srnordier (lsn == bpb.infs || 67337446Srnordier (bpb.bkbs != MAXU16 && 67437446Srnordier lsn == bpb.bkbs + bpb.infs))) { 67537446Srnordier mk4(img, 0x41615252); 676170166Strhodes mk4(img + MINBPS - 28, 0x61417272); 677170166Strhodes mk4(img + MINBPS - 24, 0xffffffff); 678170166Strhodes mk4(img + MINBPS - 20, bpb.rdcl); 679170166Strhodes mk2(img + MINBPS - 2, DOSMAGIC); 68037446Srnordier } else if (lsn >= bpb.res && lsn < dir && 68137446Srnordier !((lsn - bpb.res) % 68237446Srnordier (bpb.spf ? bpb.spf : bpb.bspf))) { 68337446Srnordier mk1(img[0], bpb.mid); 68437446Srnordier for (x = 1; x < fat * (fat == 32 ? 3 : 2) / 8; x++) 68537446Srnordier mk1(img[x], fat == 32 && x % 4 == 3 ? 0x0f : 0xff); 68637446Srnordier } else if (lsn == dir && opt_L) { 68737759Srnordier de = (struct de *)img; 68837446Srnordier mklabel(de->namext, opt_L); 68937446Srnordier mk1(de->attr, 050); 69037446Srnordier x = (u_int)tm->tm_hour << 11 | 69137446Srnordier (u_int)tm->tm_min << 5 | 69237446Srnordier (u_int)tm->tm_sec >> 1; 69337446Srnordier mk2(de->time, x); 69437446Srnordier x = (u_int)(tm->tm_year - 80) << 9 | 69537446Srnordier (u_int)(tm->tm_mon + 1) << 5 | 69637446Srnordier (u_int)tm->tm_mday; 69737446Srnordier mk2(de->date, x); 69837446Srnordier } 69937446Srnordier if ((n = write(fd, img, bpb.bps)) == -1) 70037446Srnordier err(1, "%s", fname); 701140384Sdelphij if ((unsigned)n != bpb.bps) 70237446Srnordier errx(1, "%s: can't write sector %u", fname, lsn); 70337446Srnordier } 70437446Srnordier } 70537446Srnordier return 0; 70637446Srnordier} 70737446Srnordier 70837446Srnordier/* 709102231Strhodes * Exit with error if file system is mounted. 71037446Srnordier */ 71137446Srnordierstatic void 71237446Srnordiercheck_mounted(const char *fname, mode_t mode) 71337446Srnordier{ 71437446Srnordier struct statfs *mp; 71537446Srnordier const char *s1, *s2; 71637446Srnordier size_t len; 71737446Srnordier int n, r; 71837446Srnordier 71937446Srnordier if (!(n = getmntinfo(&mp, MNT_NOWAIT))) 72037446Srnordier err(1, "getmntinfo"); 72137446Srnordier len = strlen(_PATH_DEV); 72237446Srnordier s1 = fname; 72337446Srnordier if (!strncmp(s1, _PATH_DEV, len)) 72437446Srnordier s1 += len; 72537446Srnordier r = S_ISCHR(mode) && s1 != fname && *s1 == 'r'; 72637446Srnordier for (; n--; mp++) { 72737446Srnordier s2 = mp->f_mntfromname; 72837446Srnordier if (!strncmp(s2, _PATH_DEV, len)) 72937446Srnordier s2 += len; 73037446Srnordier if ((r && s2 != mp->f_mntfromname && !strcmp(s1 + 1, s2)) || 73137446Srnordier !strcmp(s1, s2)) 73237446Srnordier errx(1, "%s is mounted on %s", fname, mp->f_mntonname); 73337446Srnordier } 73437446Srnordier} 73537446Srnordier 73637446Srnordier/* 73737446Srnordier * Get a standard format. 73837446Srnordier */ 73937446Srnordierstatic void 74037446Srnordiergetstdfmt(const char *fmt, struct bpb *bpb) 74137446Srnordier{ 74237446Srnordier u_int x, i; 74337446Srnordier 74437446Srnordier x = sizeof(stdfmt) / sizeof(stdfmt[0]); 74537446Srnordier for (i = 0; i < x && strcmp(fmt, stdfmt[i].name); i++); 74637446Srnordier if (i == x) 74737446Srnordier errx(1, "%s: unknown standard format", fmt); 74837446Srnordier *bpb = stdfmt[i].bpb; 74937446Srnordier} 75037446Srnordier 75137446Srnordier/* 75237446Srnordier * Get disk slice, partition, and geometry information. 75337446Srnordier */ 75437446Srnordierstatic void 755140384Sdelphijgetdiskinfo(int fd, const char *fname, const char *dtype, __unused int oflag, 75637446Srnordier struct bpb *bpb) 75737446Srnordier{ 758106372Sscottl struct disklabel *lp, dlp; 759106372Sscottl struct fd_type type; 760140384Sdelphij off_t ms, hs = 0; 76137446Srnordier 762106372Sscottl lp = NULL; 763106372Sscottl 764106372Sscottl /* If the user specified a disk type, try to use that */ 765106372Sscottl if (dtype != NULL) { 766106372Sscottl lp = getdiskbyname(dtype); 76737446Srnordier } 768106372Sscottl 769106372Sscottl /* Maybe it's a floppy drive */ 770106372Sscottl if (lp == NULL) { 771185345Sluigi if (ioctl(fd, DIOCGMEDIASIZE, &ms) == -1) { 772185345Sluigi struct stat st; 773185345Sluigi 774185345Sluigi if (fstat(fd, &st)) 775185345Sluigi err(1, "Cannot get disk size"); 776185345Sluigi /* create a fake geometry for a file image */ 777185345Sluigi ms = st.st_size; 778185345Sluigi dlp.d_secsize = 512; 779185587Sluigi dlp.d_nsectors = 63; 780185587Sluigi dlp.d_ntracks = 255; 781185345Sluigi dlp.d_secperunit = ms / dlp.d_secsize; 782185345Sluigi lp = &dlp; 783185345Sluigi } else if (ioctl(fd, FD_GTYPE, &type) != -1) { 784106372Sscottl dlp.d_secsize = 128 << type.secsize; 785106372Sscottl dlp.d_nsectors = type.sectrac; 786106372Sscottl dlp.d_ntracks = type.heads; 787106372Sscottl dlp.d_secperunit = ms / dlp.d_secsize; 788106372Sscottl lp = &dlp; 78937446Srnordier } 79037446Srnordier } 791106372Sscottl 792106372Sscottl /* Maybe it's a fixed drive */ 793106372Sscottl if (lp == NULL) { 794106372Sscottl if (ioctl(fd, DIOCGDINFO, &dlp) == -1) { 795106372Sscottl if (ioctl(fd, DIOCGSECTORSIZE, &dlp.d_secsize) == -1) 796125916Stjr errx(1, "Cannot get sector size, %s", strerror(errno)); 797106372Sscottl if (ioctl(fd, DIOCGFWSECTORS, &dlp.d_nsectors) == -1) 798125916Stjr errx(1, "Cannot get number of sectors, %s", strerror(errno)); 799106372Sscottl if (ioctl(fd, DIOCGFWHEADS, &dlp.d_ntracks)== -1) 800125916Stjr errx(1, "Cannot get number of heads, %s", strerror(errno)); 801106372Sscottl dlp.d_secperunit = ms / dlp.d_secsize; 80237446Srnordier } 803106372Sscottl 804106372Sscottl hs = (ms / dlp.d_secsize) - dlp.d_secperunit; 805106372Sscottl lp = &dlp; 80637446Srnordier } 807106372Sscottl 808106372Sscottl if (bpb->bps == 0) 809106372Sscottl bpb->bps = ckgeom(fname, lp->d_secsize, "bytes/sector"); 810106372Sscottl if (bpb->spt == 0) 811106372Sscottl bpb->spt = ckgeom(fname, lp->d_nsectors, "sectors/track"); 812106372Sscottl if (bpb->hds == 0) 813106372Sscottl bpb->hds = ckgeom(fname, lp->d_ntracks, "drive heads"); 814106372Sscottl if (bpb->bsec == 0) 815106372Sscottl bpb->bsec = lp->d_secperunit; 816106372Sscottl if (bpb->hid == 0) 817106372Sscottl bpb->hid = hs; 81837446Srnordier} 81937446Srnordier 82037446Srnordier/* 82137446Srnordier * Print out BPB values. 82237446Srnordier */ 82337446Srnordierstatic void 82437446Srnordierprint_bpb(struct bpb *bpb) 82537446Srnordier{ 82637446Srnordier printf("bps=%u spc=%u res=%u nft=%u", bpb->bps, bpb->spc, bpb->res, 82737446Srnordier bpb->nft); 82837446Srnordier if (bpb->rde) 82937446Srnordier printf(" rde=%u", bpb->rde); 83037446Srnordier if (bpb->sec) 83137446Srnordier printf(" sec=%u", bpb->sec); 83241586Srnordier printf(" mid=%#x", bpb->mid); 83337446Srnordier if (bpb->spf) 83437446Srnordier printf(" spf=%u", bpb->spf); 83537446Srnordier printf(" spt=%u hds=%u hid=%u", bpb->spt, bpb->hds, bpb->hid); 83637446Srnordier if (bpb->bsec) 83737446Srnordier printf(" bsec=%u", bpb->bsec); 83837446Srnordier if (!bpb->spf) { 83937446Srnordier printf(" bspf=%u rdcl=%u", bpb->bspf, bpb->rdcl); 84037446Srnordier printf(" infs="); 84141586Srnordier printf(bpb->infs == MAXU16 ? "%#x" : "%u", bpb->infs); 84237446Srnordier printf(" bkbs="); 84341586Srnordier printf(bpb->bkbs == MAXU16 ? "%#x" : "%u", bpb->bkbs); 84437446Srnordier } 84537446Srnordier printf("\n"); 84637446Srnordier} 84737446Srnordier 84837446Srnordier/* 84937446Srnordier * Check a disk geometry value. 85037446Srnordier */ 85137446Srnordierstatic u_int 85237446Srnordierckgeom(const char *fname, u_int val, const char *msg) 85337446Srnordier{ 85437446Srnordier if (!val) 85537446Srnordier errx(1, "%s: no default %s", fname, msg); 85637446Srnordier if (val > MAXU16) 857106372Sscottl errx(1, "%s: illegal %s %d", fname, msg, val); 85837446Srnordier return val; 85937446Srnordier} 86037446Srnordier 86137446Srnordier/* 86237446Srnordier * Convert and check a numeric option argument. 86337446Srnordier */ 86437446Srnordierstatic u_int 86537446Srnordierargtou(const char *arg, u_int lo, u_int hi, const char *msg) 86637446Srnordier{ 86737446Srnordier char *s; 86837446Srnordier u_long x; 86937446Srnordier 87037446Srnordier errno = 0; 87137446Srnordier x = strtoul(arg, &s, 0); 87237446Srnordier if (errno || !*arg || *s || x < lo || x > hi) 87337446Srnordier errx(1, "%s: bad %s", arg, msg); 87437446Srnordier return x; 87537446Srnordier} 87637446Srnordier 87737446Srnordier/* 878185587Sluigi * Same for off_t, with optional skmgpP suffix 879185587Sluigi */ 880185587Sluigistatic off_t 881185587Sluigiargtooff(const char *arg, const char *msg) 882185587Sluigi{ 883185587Sluigi char *s; 884185587Sluigi off_t x; 885185587Sluigi 886185587Sluigi x = strtoll(arg, &s, 0); 887185587Sluigi /* allow at most one extra char */ 888185587Sluigi if (errno || x < 0 || (s[0] && s[1]) ) 889185587Sluigi errx(1, "%s: bad %s", arg, msg); 890185587Sluigi if (*s) { /* the extra char is the multiplier */ 891185587Sluigi switch (*s) { 892185587Sluigi default: 893185587Sluigi errx(1, "%s: bad %s", arg, msg); 894185587Sluigi /* notreached */ 895185587Sluigi 896185587Sluigi case 's': /* sector */ 897185587Sluigi case 'S': 898185587Sluigi x <<= 9; /* times 512 */ 899185587Sluigi break; 900185587Sluigi 901185587Sluigi case 'k': /* kilobyte */ 902185587Sluigi case 'K': 903185587Sluigi x <<= 10; /* times 1024 */ 904185587Sluigi break; 905185587Sluigi 906185587Sluigi case 'm': /* megabyte */ 907185587Sluigi case 'M': 908185587Sluigi x <<= 20; /* times 1024*1024 */ 909185587Sluigi break; 910185587Sluigi 911185587Sluigi case 'g': /* gigabyte */ 912185587Sluigi case 'G': 913185587Sluigi x <<= 30; /* times 1024*1024*1024 */ 914185587Sluigi break; 915185587Sluigi 916185587Sluigi case 'p': /* partition start */ 917185587Sluigi case 'P': /* partition start */ 918185587Sluigi case 'l': /* partition length */ 919185587Sluigi case 'L': /* partition length */ 920185587Sluigi errx(1, "%s: not supported yet %s", arg, msg); 921185587Sluigi /* notreached */ 922185587Sluigi } 923185587Sluigi } 924185587Sluigi return x; 925185587Sluigi} 926185587Sluigi 927185587Sluigi/* 92837446Srnordier * Check a volume label. 92937446Srnordier */ 93037446Srnordierstatic int 93137446Srnordieroklabel(const char *src) 93237446Srnordier{ 93337446Srnordier int c, i; 93437446Srnordier 93537446Srnordier for (i = 0; i <= 11; i++) { 93637446Srnordier c = (u_char)*src++; 93737446Srnordier if (c < ' ' + !i || strchr("\"*+,./:;<=>?[\\]|", c)) 93837446Srnordier break; 93937446Srnordier } 94037446Srnordier return i && !c; 94137446Srnordier} 94237446Srnordier 94337446Srnordier/* 94437446Srnordier * Make a volume label. 94537446Srnordier */ 94637446Srnordierstatic void 94737446Srnordiermklabel(u_int8_t *dest, const char *src) 94837446Srnordier{ 94937446Srnordier int c, i; 95037446Srnordier 95137446Srnordier for (i = 0; i < 11; i++) { 95237446Srnordier c = *src ? toupper(*src++) : ' '; 95337446Srnordier *dest++ = !i && c == '\xe5' ? 5 : c; 95437446Srnordier } 95537446Srnordier} 95637446Srnordier 95737446Srnordier/* 95837446Srnordier * Copy string, padding with spaces. 95937446Srnordier */ 96037446Srnordierstatic void 96137446Srnordiersetstr(u_int8_t *dest, const char *src, size_t len) 96237446Srnordier{ 96337446Srnordier while (len--) 96437446Srnordier *dest++ = *src ? *src++ : ' '; 96537446Srnordier} 96637446Srnordier 96737446Srnordier/* 96837446Srnordier * Print usage message. 96937446Srnordier */ 97037446Srnordierstatic void 97137446Srnordierusage(void) 97237446Srnordier{ 97337708Srnordier fprintf(stderr, 97437708Srnordier "usage: newfs_msdos [ -options ] special [disktype]\n"); 97537708Srnordier fprintf(stderr, "where the options are:\n"); 976102231Strhodes fprintf(stderr, "\t-N don't create file system: " 97737708Srnordier "just print out parameters\n"); 97837708Srnordier fprintf(stderr, "\t-B get bootstrap from file\n"); 97937708Srnordier fprintf(stderr, "\t-F FAT type (12, 16, or 32)\n"); 98037708Srnordier fprintf(stderr, "\t-I volume ID\n"); 98137708Srnordier fprintf(stderr, "\t-L volume label\n"); 98237708Srnordier fprintf(stderr, "\t-O OEM string\n"); 98337708Srnordier fprintf(stderr, "\t-S bytes/sector\n"); 98437708Srnordier fprintf(stderr, "\t-a sectors/FAT\n"); 98537708Srnordier fprintf(stderr, "\t-b block size\n"); 98637708Srnordier fprintf(stderr, "\t-c sectors/cluster\n"); 98737708Srnordier fprintf(stderr, "\t-e root directory entries\n"); 98837708Srnordier fprintf(stderr, "\t-f standard format\n"); 98937708Srnordier fprintf(stderr, "\t-h drive heads\n"); 990102231Strhodes fprintf(stderr, "\t-i file system info sector\n"); 99137708Srnordier fprintf(stderr, "\t-k backup boot sector\n"); 99237708Srnordier fprintf(stderr, "\t-m media descriptor\n"); 99337708Srnordier fprintf(stderr, "\t-n number of FATs\n"); 99437708Srnordier fprintf(stderr, "\t-o hidden sectors\n"); 99537708Srnordier fprintf(stderr, "\t-r reserved sectors\n"); 996102231Strhodes fprintf(stderr, "\t-s file system size (sectors)\n"); 99737708Srnordier fprintf(stderr, "\t-u sectors/track\n"); 99837446Srnordier exit(1); 99937446Srnordier} 1000