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 "$FreeBSD$"; 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> 45185594Smlaier#include <inttypes.h> 4637446Srnordier#include <paths.h> 47223945Sae#include <signal.h> 4837446Srnordier#include <stdio.h> 4937446Srnordier#include <stdlib.h> 5037446Srnordier#include <string.h> 5166907Swollman#include <time.h> 5237446Srnordier#include <unistd.h> 5337446Srnordier 5437446Srnordier#define MAXU16 0xffff /* maximum unsigned 16-bit quantity */ 5537446Srnordier#define BPN 4 /* bits per nibble */ 5637446Srnordier#define NPB 2 /* nibbles per byte */ 5737446Srnordier 5837446Srnordier#define DOSMAGIC 0xaa55 /* DOS magic number */ 59170166Strhodes#define MINBPS 512 /* minimum bytes per sector */ 6037446Srnordier#define MAXSPC 128 /* maximum sectors per cluster */ 6137446Srnordier#define MAXNFT 16 /* maximum number of FATs */ 6237446Srnordier#define DEFBLK 4096 /* default block size */ 6337446Srnordier#define DEFBLK16 2048 /* default block size FAT16 */ 6437446Srnordier#define DEFRDE 512 /* default root directory entries */ 6537446Srnordier#define RESFTE 2 /* reserved FAT entries */ 66203868Skib#define MINCLS12 1U /* minimum FAT12 clusters */ 67203868Skib#define MINCLS16 0x1000U /* minimum FAT16 clusters */ 68203868Skib#define MINCLS32 2U /* minimum FAT32 clusters */ 69229550Spfg#define MAXCLS12 0xfedU /* maximum FAT12 clusters */ 70203868Skib#define MAXCLS16 0xfff5U /* maximum FAT16 clusters */ 71203868Skib#define MAXCLS32 0xffffff5U /* maximum FAT32 clusters */ 7237446Srnordier 7337446Srnordier#define mincls(fat) ((fat) == 12 ? MINCLS12 : \ 7437446Srnordier (fat) == 16 ? MINCLS16 : \ 7537446Srnordier MINCLS32) 7637446Srnordier 7737446Srnordier#define maxcls(fat) ((fat) == 12 ? MAXCLS12 : \ 7837446Srnordier (fat) == 16 ? MAXCLS16 : \ 7937446Srnordier MAXCLS32) 8037446Srnordier 8137446Srnordier#define mk1(p, x) \ 8237446Srnordier (p) = (u_int8_t)(x) 8337446Srnordier 8437446Srnordier#define mk2(p, x) \ 8537446Srnordier (p)[0] = (u_int8_t)(x), \ 8637446Srnordier (p)[1] = (u_int8_t)((x) >> 010) 8737446Srnordier 8837446Srnordier#define mk4(p, x) \ 8937446Srnordier (p)[0] = (u_int8_t)(x), \ 9037446Srnordier (p)[1] = (u_int8_t)((x) >> 010), \ 9137446Srnordier (p)[2] = (u_int8_t)((x) >> 020), \ 9237446Srnordier (p)[3] = (u_int8_t)((x) >> 030) 9337446Srnordier 9437446Srnordier#define argto1(arg, lo, msg) argtou(arg, lo, 0xff, msg) 9537446Srnordier#define argto2(arg, lo, msg) argtou(arg, lo, 0xffff, msg) 9637446Srnordier#define argto4(arg, lo, msg) argtou(arg, lo, 0xffffffff, msg) 9737446Srnordier#define argtox(arg, lo, msg) argtou(arg, lo, UINT_MAX, msg) 9837446Srnordier 9937446Srnordierstruct bs { 100229550Spfg u_int8_t bsJump[3]; /* bootstrap entry point */ 101203869Skib u_int8_t bsOemName[8]; /* OEM name and version */ 102231162Sdelphij} __packed; 10337446Srnordier 10437446Srnordierstruct bsbpb { 105203869Skib u_int8_t bpbBytesPerSec[2]; /* bytes per sector */ 106203869Skib u_int8_t bpbSecPerClust; /* sectors per cluster */ 107203869Skib u_int8_t bpbResSectors[2]; /* reserved sectors */ 108203869Skib u_int8_t bpbFATs; /* number of FATs */ 109203869Skib u_int8_t bpbRootDirEnts[2]; /* root directory entries */ 110203869Skib u_int8_t bpbSectors[2]; /* total sectors */ 111203869Skib u_int8_t bpbMedia; /* media descriptor */ 112203869Skib u_int8_t bpbFATsecs[2]; /* sectors per FAT */ 113203869Skib u_int8_t bpbSecPerTrack[2]; /* sectors per track */ 114203869Skib u_int8_t bpbHeads[2]; /* drive heads */ 115203869Skib u_int8_t bpbHiddenSecs[4]; /* hidden sectors */ 116203869Skib u_int8_t bpbHugeSectors[4]; /* big total sectors */ 117231162Sdelphij} __packed; 11837446Srnordier 11937446Srnordierstruct bsxbpb { 120203869Skib u_int8_t bpbBigFATsecs[4]; /* big sectors per FAT */ 121203869Skib u_int8_t bpbExtFlags[2]; /* FAT control flags */ 122203869Skib u_int8_t bpbFSVers[2]; /* file system version */ 123203869Skib u_int8_t bpbRootClust[4]; /* root directory start cluster */ 124203869Skib u_int8_t bpbFSInfo[2]; /* file system info sector */ 125203869Skib u_int8_t bpbBackup[2]; /* backup boot sector */ 126229550Spfg u_int8_t bpbReserved[12]; /* reserved */ 127231162Sdelphij} __packed; 12837446Srnordier 12937446Srnordierstruct bsx { 130203869Skib u_int8_t exDriveNumber; /* drive number */ 131203869Skib u_int8_t exReserved1; /* reserved */ 132203869Skib u_int8_t exBootSignature; /* extended boot signature */ 133203869Skib u_int8_t exVolumeID[4]; /* volume ID number */ 134203869Skib u_int8_t exVolumeLabel[11]; /* volume label */ 135203869Skib u_int8_t exFileSysType[8]; /* file system type */ 136231162Sdelphij} __packed; 13737446Srnordier 13837446Srnordierstruct de { 139229550Spfg u_int8_t deName[11]; /* name and extension */ 140229550Spfg u_int8_t deAttributes; /* attributes */ 141229550Spfg u_int8_t rsvd[10]; /* reserved */ 142229550Spfg u_int8_t deMTime[2]; /* creation time */ 143229550Spfg u_int8_t deMDate[2]; /* creation date */ 144229550Spfg u_int8_t deStartCluster[2]; /* starting cluster */ 145229550Spfg u_int8_t deFileSize[4]; /* size */ 146231162Sdelphij} __packed; 14737446Srnordier 14837446Srnordierstruct bpb { 149203869Skib u_int bpbBytesPerSec; /* bytes per sector */ 150203869Skib u_int bpbSecPerClust; /* sectors per cluster */ 151203869Skib u_int bpbResSectors; /* reserved sectors */ 152203869Skib u_int bpbFATs; /* number of FATs */ 153203869Skib u_int bpbRootDirEnts; /* root directory entries */ 154203869Skib u_int bpbSectors; /* total sectors */ 155203869Skib u_int bpbMedia; /* media descriptor */ 156203869Skib u_int bpbFATsecs; /* sectors per FAT */ 157203869Skib u_int bpbSecPerTrack; /* sectors per track */ 158203869Skib u_int bpbHeads; /* drive heads */ 159203869Skib u_int bpbHiddenSecs; /* hidden sectors */ 160203869Skib u_int bpbHugeSectors; /* big total sectors */ 161203869Skib u_int bpbBigFATsecs; /* big sectors per FAT */ 162203869Skib u_int bpbRootClust; /* root directory start cluster */ 163229550Spfg u_int bpbFSInfo; /* file system info sector */ 164229550Spfg u_int bpbBackup; /* backup boot sector */ 16537446Srnordier}; 16637446Srnordier 167140384Sdelphij#define BPBGAP 0, 0, 0, 0, 0, 0 168140384Sdelphij 16937446Srnordierstatic struct { 17037446Srnordier const char *name; 17137446Srnordier struct bpb bpb; 172190927Sed} const stdfmt[] = { 173229550Spfg {"160", {512, 1, 1, 2, 64, 320, 0xfe, 1, 8, 1, BPBGAP}}, 174229550Spfg {"180", {512, 1, 1, 2, 64, 360, 0xfc, 2, 9, 1, BPBGAP}}, 175229550Spfg {"320", {512, 2, 1, 2, 112, 640, 0xff, 1, 8, 2, BPBGAP}}, 176229550Spfg {"360", {512, 2, 1, 2, 112, 720, 0xfd, 2, 9, 2, BPBGAP}}, 177229550Spfg {"640", {512, 2, 1, 2, 112, 1280, 0xfb, 2, 8, 2, BPBGAP}}, 178229550Spfg {"720", {512, 2, 1, 2, 112, 1440, 0xf9, 3, 9, 2, BPBGAP}}, 179229550Spfg {"1200", {512, 1, 1, 2, 224, 2400, 0xf9, 7, 15, 2, BPBGAP}}, 180229550Spfg {"1232", {1024,1, 1, 2, 192, 1232, 0xfe, 2, 8, 2, BPBGAP}}, 181229550Spfg {"1440", {512, 1, 1, 2, 224, 2880, 0xf0, 9, 18, 2, BPBGAP}}, 182229550Spfg {"2880", {512, 2, 1, 2, 240, 5760, 0xf0, 9, 36, 2, BPBGAP}} 18337446Srnordier}; 18437446Srnordier 185190927Sedstatic const u_int8_t bootcode[] = { 18637446Srnordier 0xfa, /* cli */ 18737446Srnordier 0x31, 0xc0, /* xor ax,ax */ 18837446Srnordier 0x8e, 0xd0, /* mov ss,ax */ 18937446Srnordier 0xbc, 0x00, 0x7c, /* mov sp,7c00h */ 19037446Srnordier 0xfb, /* sti */ 19137446Srnordier 0x8e, 0xd8, /* mov ds,ax */ 19237446Srnordier 0xe8, 0x00, 0x00, /* call $ + 3 */ 19337446Srnordier 0x5e, /* pop si */ 19437446Srnordier 0x83, 0xc6, 0x19, /* add si,+19h */ 19537446Srnordier 0xbb, 0x07, 0x00, /* mov bx,0007h */ 19637446Srnordier 0xfc, /* cld */ 19737446Srnordier 0xac, /* lodsb */ 19837446Srnordier 0x84, 0xc0, /* test al,al */ 19937446Srnordier 0x74, 0x06, /* jz $ + 8 */ 20037446Srnordier 0xb4, 0x0e, /* mov ah,0eh */ 20137446Srnordier 0xcd, 0x10, /* int 10h */ 20237446Srnordier 0xeb, 0xf5, /* jmp $ - 9 */ 20337446Srnordier 0x30, 0xe4, /* xor ah,ah */ 20437446Srnordier 0xcd, 0x16, /* int 16h */ 20537446Srnordier 0xcd, 0x19, /* int 19h */ 20637446Srnordier 0x0d, 0x0a, 20737446Srnordier 'N', 'o', 'n', '-', 's', 'y', 's', 't', 20837446Srnordier 'e', 'm', ' ', 'd', 'i', 's', 'k', 20937446Srnordier 0x0d, 0x0a, 21037446Srnordier 'P', 'r', 'e', 's', 's', ' ', 'a', 'n', 21137446Srnordier 'y', ' ', 'k', 'e', 'y', ' ', 't', 'o', 21237446Srnordier ' ', 'r', 'e', 'b', 'o', 'o', 't', 21337446Srnordier 0x0d, 0x0a, 21437446Srnordier 0 21537446Srnordier}; 21637446Srnordier 217223945Saestatic volatile sig_atomic_t got_siginfo; 218223945Saestatic void infohandler(int); 219223945Sae 22037446Srnordierstatic void check_mounted(const char *, mode_t); 22137446Srnordierstatic void getstdfmt(const char *, struct bpb *); 22237446Srnordierstatic void getdiskinfo(int, const char *, const char *, int, 22337446Srnordier struct bpb *); 22437446Srnordierstatic void print_bpb(struct bpb *); 22537446Srnordierstatic u_int ckgeom(const char *, u_int, const char *); 22637446Srnordierstatic u_int argtou(const char *, u_int, u_int, const char *); 227185587Sluigistatic off_t argtooff(const char *, const char *); 22837446Srnordierstatic int oklabel(const char *); 22937446Srnordierstatic void mklabel(u_int8_t *, const char *); 23037446Srnordierstatic void setstr(u_int8_t *, const char *, size_t); 23137446Srnordierstatic void usage(void); 23237446Srnordier 23337446Srnordier/* 234102231Strhodes * Construct a FAT12, FAT16, or FAT32 file system. 23537446Srnordier */ 23637446Srnordierint 23737446Srnordiermain(int argc, char *argv[]) 23837446Srnordier{ 239190927Sed static const char opts[] = "@:NB:C:F:I:L:O:S:a:b:c:e:f:h:i:k:m:n:o:r:s:u:"; 240190927Sed const char *opt_B = NULL, *opt_L = NULL, *opt_O = NULL, *opt_f = NULL; 241190927Sed u_int opt_F = 0, opt_I = 0, opt_S = 0, opt_a = 0, opt_b = 0, opt_c = 0; 242190927Sed u_int opt_e = 0, opt_h = 0, opt_i = 0, opt_k = 0, opt_m = 0, opt_n = 0; 243190927Sed u_int opt_o = 0, opt_r = 0, opt_s = 0, opt_u = 0; 244190927Sed int opt_N = 0; 245190927Sed int Iflag = 0, mflag = 0, oflag = 0; 24637446Srnordier char buf[MAXPATHLEN]; 247223945Sae struct sigaction si_sa; 24837446Srnordier struct stat sb; 24937446Srnordier struct timeval tv; 25037446Srnordier struct bpb bpb; 25137446Srnordier struct tm *tm; 25237446Srnordier struct bs *bs; 25337446Srnordier struct bsbpb *bsbpb; 25437446Srnordier struct bsxbpb *bsxbpb; 25537446Srnordier struct bsx *bsx; 25637446Srnordier struct de *de; 25737446Srnordier u_int8_t *img; 25837446Srnordier const char *fname, *dtype, *bname; 25937446Srnordier ssize_t n; 26040487Sbde time_t now; 26137446Srnordier u_int fat, bss, rds, cls, dir, lsn, x, x1, x2; 26237446Srnordier int ch, fd, fd1; 263190927Sed off_t opt_create = 0, opt_ofs = 0; 26437446Srnordier 26537446Srnordier while ((ch = getopt(argc, argv, opts)) != -1) 26637446Srnordier switch (ch) { 267185587Sluigi case '@': 268185587Sluigi opt_ofs = argtooff(optarg, "offset"); 269185587Sluigi break; 27037446Srnordier case 'N': 27137446Srnordier opt_N = 1; 27237446Srnordier break; 27337446Srnordier case 'B': 27437446Srnordier opt_B = optarg; 27537446Srnordier break; 276185587Sluigi case 'C': 277185587Sluigi opt_create = argtooff(optarg, "create size"); 278185587Sluigi break; 27937446Srnordier case 'F': 28037446Srnordier if (strcmp(optarg, "12") && 28137446Srnordier strcmp(optarg, "16") && 28237446Srnordier strcmp(optarg, "32")) 28337446Srnordier errx(1, "%s: bad FAT type", optarg); 28437446Srnordier opt_F = atoi(optarg); 28537446Srnordier break; 28637446Srnordier case 'I': 28737446Srnordier opt_I = argto4(optarg, 0, "volume ID"); 28837446Srnordier Iflag = 1; 28937446Srnordier break; 29037446Srnordier case 'L': 29137446Srnordier if (!oklabel(optarg)) 29237446Srnordier errx(1, "%s: bad volume label", optarg); 29337446Srnordier opt_L = optarg; 29437446Srnordier break; 29537446Srnordier case 'O': 29637446Srnordier if (strlen(optarg) > 8) 29737446Srnordier errx(1, "%s: bad OEM string", optarg); 29837446Srnordier opt_O = optarg; 29937446Srnordier break; 30037446Srnordier case 'S': 30137446Srnordier opt_S = argto2(optarg, 1, "bytes/sector"); 30237446Srnordier break; 30337446Srnordier case 'a': 30437446Srnordier opt_a = argto4(optarg, 1, "sectors/FAT"); 30537446Srnordier break; 30637446Srnordier case 'b': 30737446Srnordier opt_b = argtox(optarg, 1, "block size"); 30837446Srnordier opt_c = 0; 30937446Srnordier break; 31037446Srnordier case 'c': 31137446Srnordier opt_c = argto1(optarg, 1, "sectors/cluster"); 31237446Srnordier opt_b = 0; 31337446Srnordier break; 31437446Srnordier case 'e': 31537446Srnordier opt_e = argto2(optarg, 1, "directory entries"); 31637446Srnordier break; 31737446Srnordier case 'f': 31837446Srnordier opt_f = optarg; 31937446Srnordier break; 32037446Srnordier case 'h': 32137446Srnordier opt_h = argto2(optarg, 1, "drive heads"); 32237446Srnordier break; 32337446Srnordier case 'i': 32437446Srnordier opt_i = argto2(optarg, 1, "info sector"); 32537446Srnordier break; 32637446Srnordier case 'k': 32737446Srnordier opt_k = argto2(optarg, 1, "backup sector"); 32837446Srnordier break; 32937446Srnordier case 'm': 33037446Srnordier opt_m = argto1(optarg, 0, "media descriptor"); 33137446Srnordier mflag = 1; 33237446Srnordier break; 33337446Srnordier case 'n': 33437446Srnordier opt_n = argto1(optarg, 1, "number of FATs"); 33537446Srnordier break; 33637446Srnordier case 'o': 33737446Srnordier opt_o = argto4(optarg, 0, "hidden sectors"); 33837446Srnordier oflag = 1; 33937446Srnordier break; 34037446Srnordier case 'r': 34137446Srnordier opt_r = argto2(optarg, 1, "reserved sectors"); 34237446Srnordier break; 34337446Srnordier case 's': 344102231Strhodes opt_s = argto4(optarg, 1, "file system size"); 34537446Srnordier break; 34637446Srnordier case 'u': 34737446Srnordier opt_u = argto2(optarg, 1, "sectors/track"); 34837446Srnordier break; 34937446Srnordier default: 35037446Srnordier usage(); 35137446Srnordier } 35237446Srnordier argc -= optind; 35337446Srnordier argv += optind; 35437446Srnordier if (argc < 1 || argc > 2) 35537446Srnordier usage(); 35637446Srnordier fname = *argv++; 357190932Sed if (!opt_create && !strchr(fname, '/')) { 35863892Sasmodai snprintf(buf, sizeof(buf), "%s%s", _PATH_DEV, fname); 35937446Srnordier if (!(fname = strdup(buf))) 36037446Srnordier err(1, NULL); 36137446Srnordier } 36237446Srnordier dtype = *argv; 363185587Sluigi if (opt_create) { 364185587Sluigi if (opt_N) 365185587Sluigi errx(1, "create (-C) is incompatible with -N"); 366185587Sluigi fd = open(fname, O_RDWR | O_CREAT | O_TRUNC, 0644); 367185587Sluigi if (fd == -1) 368185587Sluigi errx(1, "failed to create %s", fname); 369190929Sed if (ftruncate(fd, opt_create)) 370185594Smlaier errx(1, "failed to initialize %jd bytes", (intmax_t)opt_create); 371190930Sed } else if ((fd = open(fname, opt_N ? O_RDONLY : O_RDWR)) == -1) 37237446Srnordier err(1, "%s", fname); 373190930Sed if (fstat(fd, &sb)) 374190930Sed err(1, "%s", fname); 375190931Sed if (opt_create) { 376190931Sed if (!S_ISREG(sb.st_mode)) 377190931Sed warnx("warning, %s is not a regular file", fname); 378190931Sed } else { 379190931Sed if (!S_ISCHR(sb.st_mode)) 380190931Sed warnx("warning, %s is not a character device", fname); 381190931Sed } 38237446Srnordier if (!opt_N) 38337446Srnordier check_mounted(fname, sb.st_mode); 384185587Sluigi if (opt_ofs && opt_ofs != lseek(fd, opt_ofs, SEEK_SET)) 385185594Smlaier errx(1, "cannot seek to %jd", (intmax_t)opt_ofs); 38637446Srnordier memset(&bpb, 0, sizeof(bpb)); 38737446Srnordier if (opt_f) { 38837446Srnordier getstdfmt(opt_f, &bpb); 389203869Skib bpb.bpbHugeSectors = bpb.bpbSectors; 390203869Skib bpb.bpbSectors = 0; 391203869Skib bpb.bpbBigFATsecs = bpb.bpbFATsecs; 392203869Skib bpb.bpbFATsecs = 0; 39337446Srnordier } 39437446Srnordier if (opt_h) 395203869Skib bpb.bpbHeads = opt_h; 39637446Srnordier if (opt_u) 397203869Skib bpb.bpbSecPerTrack = opt_u; 39837446Srnordier if (opt_S) 399203869Skib bpb.bpbBytesPerSec = opt_S; 40037446Srnordier if (opt_s) 401203869Skib bpb.bpbHugeSectors = opt_s; 40237446Srnordier if (oflag) 403203869Skib bpb.bpbHiddenSecs = opt_o; 404185587Sluigi if (!(opt_f || (opt_h && opt_u && opt_S && opt_s && oflag))) { 405185587Sluigi off_t delta; 40637446Srnordier getdiskinfo(fd, fname, dtype, oflag, &bpb); 407203869Skib bpb.bpbHugeSectors -= (opt_ofs / bpb.bpbBytesPerSec); 408203869Skib delta = bpb.bpbHugeSectors % bpb.bpbSecPerTrack; 409185587Sluigi if (delta != 0) { 410185587Sluigi warnx("trim %d sectors to adjust to a multiple of %d", 411203869Skib (int)delta, bpb.bpbSecPerTrack); 412203869Skib bpb.bpbHugeSectors -= delta; 413185587Sluigi } 414203869Skib if (bpb.bpbSecPerClust == 0) { /* set defaults */ 415203869Skib if (bpb.bpbHugeSectors <= 6000) /* about 3MB -> 512 bytes */ 416203869Skib bpb.bpbSecPerClust = 1; 417203869Skib else if (bpb.bpbHugeSectors <= (1<<17)) /* 64M -> 4k */ 418203869Skib bpb.bpbSecPerClust = 8; 419203869Skib else if (bpb.bpbHugeSectors <= (1<<19)) /* 256M -> 8k */ 420203869Skib bpb.bpbSecPerClust = 16; 421203869Skib else if (bpb.bpbHugeSectors <= (1<<21)) /* 1G -> 16k */ 422203869Skib bpb.bpbSecPerClust = 32; 423185587Sluigi else 424203869Skib bpb.bpbSecPerClust = 64; /* otherwise 32k */ 425185587Sluigi } 426185587Sluigi } 427203869Skib if (!powerof2(bpb.bpbBytesPerSec)) 428203869Skib errx(1, "bytes/sector (%u) is not a power of 2", bpb.bpbBytesPerSec); 429203869Skib if (bpb.bpbBytesPerSec < MINBPS) 43037446Srnordier errx(1, "bytes/sector (%u) is too small; minimum is %u", 431203869Skib bpb.bpbBytesPerSec, MINBPS); 43248954Sbillf if (!(fat = opt_F)) { 43337446Srnordier if (opt_f) 43437446Srnordier fat = 12; 43537446Srnordier else if (!opt_e && (opt_i || opt_k)) 43637446Srnordier fat = 32; 43748954Sbillf } 43837446Srnordier if ((fat == 32 && opt_e) || (fat != 32 && (opt_i || opt_k))) 43937446Srnordier errx(1, "-%c is not a legal FAT%s option", 44037446Srnordier fat == 32 ? 'e' : opt_i ? 'i' : 'k', 44137446Srnordier fat == 32 ? "32" : "12/16"); 44237446Srnordier if (opt_f && fat == 32) 443203869Skib bpb.bpbRootDirEnts = 0; 44437446Srnordier if (opt_b) { 44537446Srnordier if (!powerof2(opt_b)) 44637446Srnordier errx(1, "block size (%u) is not a power of 2", opt_b); 447203869Skib if (opt_b < bpb.bpbBytesPerSec) 44837446Srnordier errx(1, "block size (%u) is too small; minimum is %u", 449203869Skib opt_b, bpb.bpbBytesPerSec); 450203869Skib if (opt_b > bpb.bpbBytesPerSec * MAXSPC) 45137446Srnordier errx(1, "block size (%u) is too large; maximum is %u", 452203869Skib opt_b, bpb.bpbBytesPerSec * MAXSPC); 453203869Skib bpb.bpbSecPerClust = opt_b / bpb.bpbBytesPerSec; 45437446Srnordier } 45537446Srnordier if (opt_c) { 45637446Srnordier if (!powerof2(opt_c)) 45737446Srnordier errx(1, "sectors/cluster (%u) is not a power of 2", opt_c); 458203869Skib bpb.bpbSecPerClust = opt_c; 45937446Srnordier } 46037446Srnordier if (opt_r) 461203869Skib bpb.bpbResSectors = opt_r; 46237446Srnordier if (opt_n) { 46337446Srnordier if (opt_n > MAXNFT) 46437446Srnordier errx(1, "number of FATs (%u) is too large; maximum is %u", 46537446Srnordier opt_n, MAXNFT); 466203869Skib bpb.bpbFATs = opt_n; 46737446Srnordier } 46837446Srnordier if (opt_e) 469203869Skib bpb.bpbRootDirEnts = opt_e; 47037446Srnordier if (mflag) { 47137446Srnordier if (opt_m < 0xf0) 47241586Srnordier errx(1, "illegal media descriptor (%#x)", opt_m); 473203869Skib bpb.bpbMedia = opt_m; 47437446Srnordier } 47537446Srnordier if (opt_a) 476203869Skib bpb.bpbBigFATsecs = opt_a; 47737446Srnordier if (opt_i) 478203869Skib bpb.bpbFSInfo = opt_i; 47937446Srnordier if (opt_k) 480203869Skib bpb.bpbBackup = opt_k; 48137446Srnordier bss = 1; 48237446Srnordier bname = NULL; 48337446Srnordier fd1 = -1; 48437446Srnordier if (opt_B) { 48537446Srnordier bname = opt_B; 48637446Srnordier if (!strchr(bname, '/')) { 48742261Sjkh snprintf(buf, sizeof(buf), "/boot/%s", bname); 48837446Srnordier if (!(bname = strdup(buf))) 48937446Srnordier err(1, NULL); 49037446Srnordier } 49137446Srnordier if ((fd1 = open(bname, O_RDONLY)) == -1 || fstat(fd1, &sb)) 49237446Srnordier err(1, "%s", bname); 493203869Skib if (!S_ISREG(sb.st_mode) || sb.st_size % bpb.bpbBytesPerSec || 494229550Spfg sb.st_size < bpb.bpbBytesPerSec || 495229550Spfg sb.st_size > bpb.bpbBytesPerSec * MAXU16) 49637446Srnordier errx(1, "%s: inappropriate file type or format", bname); 497203869Skib bss = sb.st_size / bpb.bpbBytesPerSec; 49837446Srnordier } 499203869Skib if (!bpb.bpbFATs) 500203869Skib bpb.bpbFATs = 2; 50148954Sbillf if (!fat) { 502203869Skib if (bpb.bpbHugeSectors < (bpb.bpbResSectors ? bpb.bpbResSectors : bss) + 503203869Skib howmany((RESFTE + (bpb.bpbSecPerClust ? MINCLS16 : MAXCLS12 + 1)) * 504229550Spfg (bpb.bpbSecPerClust ? 16 : 12) / BPN, 505229550Spfg bpb.bpbBytesPerSec * NPB) * 506203869Skib bpb.bpbFATs + 507203869Skib howmany(bpb.bpbRootDirEnts ? bpb.bpbRootDirEnts : DEFRDE, 508203869Skib bpb.bpbBytesPerSec / sizeof(struct de)) + 509203869Skib (bpb.bpbSecPerClust ? MINCLS16 : MAXCLS12 + 1) * 510229550Spfg (bpb.bpbSecPerClust ? bpb.bpbSecPerClust : 511229550Spfg howmany(DEFBLK, bpb.bpbBytesPerSec))) 51237446Srnordier fat = 12; 513203869Skib else if (bpb.bpbRootDirEnts || bpb.bpbHugeSectors < 514203869Skib (bpb.bpbResSectors ? bpb.bpbResSectors : bss) + 515229550Spfg howmany((RESFTE + MAXCLS16) * 2, bpb.bpbBytesPerSec) * 516229550Spfg bpb.bpbFATs + 517203869Skib howmany(DEFRDE, bpb.bpbBytesPerSec / sizeof(struct de)) + 51837446Srnordier (MAXCLS16 + 1) * 519229550Spfg (bpb.bpbSecPerClust ? bpb.bpbSecPerClust : 520229550Spfg howmany(8192, bpb.bpbBytesPerSec))) 52137446Srnordier fat = 16; 52237446Srnordier else 52337446Srnordier fat = 32; 52448954Sbillf } 52537446Srnordier x = bss; 52637446Srnordier if (fat == 32) { 527203869Skib if (!bpb.bpbFSInfo) { 528203869Skib if (x == MAXU16 || x == bpb.bpbBackup) 52937446Srnordier errx(1, "no room for info sector"); 530203869Skib bpb.bpbFSInfo = x; 53137446Srnordier } 532203869Skib if (bpb.bpbFSInfo != MAXU16 && x <= bpb.bpbFSInfo) 533203869Skib x = bpb.bpbFSInfo + 1; 534203869Skib if (!bpb.bpbBackup) { 53537446Srnordier if (x == MAXU16) 53637446Srnordier errx(1, "no room for backup sector"); 537203869Skib bpb.bpbBackup = x; 538203869Skib } else if (bpb.bpbBackup != MAXU16 && bpb.bpbBackup == bpb.bpbFSInfo) 53937446Srnordier errx(1, "backup sector would overwrite info sector"); 540203869Skib if (bpb.bpbBackup != MAXU16 && x <= bpb.bpbBackup) 541203869Skib x = bpb.bpbBackup + 1; 54237446Srnordier } 543203869Skib if (!bpb.bpbResSectors) 544229550Spfg bpb.bpbResSectors = fat == 32 ? 545229550Spfg MAX(x, MAX(16384 / bpb.bpbBytesPerSec, 4)) : x; 546203869Skib else if (bpb.bpbResSectors < x) 547229550Spfg errx(1, "too few reserved sectors (need %d have %d)", x, 548229550Spfg bpb.bpbResSectors); 549203869Skib if (fat != 32 && !bpb.bpbRootDirEnts) 550203869Skib bpb.bpbRootDirEnts = DEFRDE; 551203869Skib rds = howmany(bpb.bpbRootDirEnts, bpb.bpbBytesPerSec / sizeof(struct de)); 552203869Skib if (!bpb.bpbSecPerClust) 553229550Spfg for (bpb.bpbSecPerClust = howmany(fat == 16 ? DEFBLK16 : 554229550Spfg DEFBLK, bpb.bpbBytesPerSec); 555203869Skib bpb.bpbSecPerClust < MAXSPC && 556203869Skib bpb.bpbResSectors + 55737446Srnordier howmany((RESFTE + maxcls(fat)) * (fat / BPN), 558229550Spfg bpb.bpbBytesPerSec * NPB) * 559229550Spfg bpb.bpbFATs + 56037446Srnordier rds + 561229550Spfg (u_int64_t) (maxcls(fat) + 1) * 562229550Spfg bpb.bpbSecPerClust <= bpb.bpbHugeSectors; 563229550Spfg bpb.bpbSecPerClust <<= 1) 564229550Spfg continue; 565203869Skib if (fat != 32 && bpb.bpbBigFATsecs > MAXU16) 56637446Srnordier errx(1, "too many sectors/FAT for FAT12/16"); 567203869Skib x1 = bpb.bpbResSectors + rds; 568203869Skib x = bpb.bpbBigFATsecs ? bpb.bpbBigFATsecs : 1; 569203869Skib if (x1 + (u_int64_t)x * bpb.bpbFATs > bpb.bpbHugeSectors) 570102231Strhodes errx(1, "meta data exceeds file system size"); 571203869Skib x1 += x * bpb.bpbFATs; 572203869Skib x = (u_int64_t)(bpb.bpbHugeSectors - x1) * bpb.bpbBytesPerSec * NPB / 573229550Spfg (bpb.bpbSecPerClust * bpb.bpbBytesPerSec * NPB + fat / 574229550Spfg BPN * bpb.bpbFATs); 57537446Srnordier x2 = howmany((RESFTE + MIN(x, maxcls(fat))) * (fat / BPN), 576203869Skib bpb.bpbBytesPerSec * NPB); 577203869Skib if (!bpb.bpbBigFATsecs) { 578203869Skib bpb.bpbBigFATsecs = x2; 579203869Skib x1 += (bpb.bpbBigFATsecs - 1) * bpb.bpbFATs; 58037446Srnordier } 581203869Skib cls = (bpb.bpbHugeSectors - x1) / bpb.bpbSecPerClust; 582229550Spfg x = (u_int64_t)bpb.bpbBigFATsecs * bpb.bpbBytesPerSec * NPB / (fat / BPN) - 583229550Spfg RESFTE; 58437446Srnordier if (cls > x) 58537446Srnordier cls = x; 586203869Skib if (bpb.bpbBigFATsecs < x2) 587102231Strhodes warnx("warning: sectors/FAT limits file system to %u clusters", 58837446Srnordier cls); 58937446Srnordier if (cls < mincls(fat)) 59059215Simp errx(1, "%u clusters too few clusters for FAT%u, need %u", cls, fat, 59159215Simp mincls(fat)); 59237446Srnordier if (cls > maxcls(fat)) { 59337446Srnordier cls = maxcls(fat); 594203869Skib bpb.bpbHugeSectors = x1 + (cls + 1) * bpb.bpbSecPerClust - 1; 595102231Strhodes warnx("warning: FAT type limits file system to %u sectors", 596203869Skib bpb.bpbHugeSectors); 59737446Srnordier } 59837446Srnordier printf("%s: %u sector%s in %u FAT%u cluster%s " 599203869Skib "(%u bytes/cluster)\n", fname, cls * bpb.bpbSecPerClust, 600203869Skib cls * bpb.bpbSecPerClust == 1 ? "" : "s", cls, fat, 601203869Skib cls == 1 ? "" : "s", bpb.bpbBytesPerSec * bpb.bpbSecPerClust); 602203869Skib if (!bpb.bpbMedia) 603203869Skib bpb.bpbMedia = !bpb.bpbHiddenSecs ? 0xf0 : 0xf8; 60437446Srnordier if (fat == 32) 605203869Skib bpb.bpbRootClust = RESFTE; 606203869Skib if (bpb.bpbHiddenSecs + bpb.bpbHugeSectors <= MAXU16) { 607203869Skib bpb.bpbSectors = bpb.bpbHugeSectors; 608203869Skib bpb.bpbHugeSectors = 0; 60937446Srnordier } 61037446Srnordier if (fat != 32) { 611203869Skib bpb.bpbFATsecs = bpb.bpbBigFATsecs; 612203869Skib bpb.bpbBigFATsecs = 0; 61337446Srnordier } 61437446Srnordier print_bpb(&bpb); 61537446Srnordier if (!opt_N) { 61637446Srnordier gettimeofday(&tv, NULL); 61740487Sbde now = tv.tv_sec; 61840487Sbde tm = localtime(&now); 619203869Skib if (!(img = malloc(bpb.bpbBytesPerSec))) 62037446Srnordier err(1, NULL); 621229550Spfg dir = bpb.bpbResSectors + (bpb.bpbFATsecs ? bpb.bpbFATsecs : 622229550Spfg bpb.bpbBigFATsecs) * bpb.bpbFATs; 623223945Sae memset(&si_sa, 0, sizeof(si_sa)); 624223945Sae si_sa.sa_handler = infohandler; 625223946Sae if (sigaction(SIGINFO, &si_sa, NULL) == -1) 626223945Sae err(1, "sigaction SIGINFO"); 627203869Skib for (lsn = 0; lsn < dir + (fat == 32 ? bpb.bpbSecPerClust : rds); lsn++) { 628223945Sae if (got_siginfo) { 629223945Sae fprintf(stderr,"%s: writing sector %u of %u (%u%%)\n", 630223945Sae fname, lsn, 631223945Sae (dir + (fat == 32 ? bpb.bpbSecPerClust: rds)), 632223945Sae (lsn * 100) / (dir + 633223945Sae (fat == 32 ? bpb.bpbSecPerClust: rds))); 634223945Sae got_siginfo = 0; 635223945Sae } 63637446Srnordier x = lsn; 63737446Srnordier if (opt_B && 638203869Skib fat == 32 && bpb.bpbBackup != MAXU16 && 639203869Skib bss <= bpb.bpbBackup && x >= bpb.bpbBackup) { 640203869Skib x -= bpb.bpbBackup; 641185587Sluigi if (!x && lseek(fd1, opt_ofs, SEEK_SET)) 64237446Srnordier err(1, "%s", bname); 64337446Srnordier } 64437446Srnordier if (opt_B && x < bss) { 645203869Skib if ((n = read(fd1, img, bpb.bpbBytesPerSec)) == -1) 64637446Srnordier err(1, "%s", bname); 647203869Skib if ((unsigned)n != bpb.bpbBytesPerSec) 64837446Srnordier errx(1, "%s: can't read sector %u", bname, x); 64937446Srnordier } else 650203869Skib memset(img, 0, bpb.bpbBytesPerSec); 65137446Srnordier if (!lsn || 652229550Spfg (fat == 32 && bpb.bpbBackup != MAXU16 && 653229550Spfg lsn == bpb.bpbBackup)) { 65437446Srnordier x1 = sizeof(struct bs); 65537446Srnordier bsbpb = (struct bsbpb *)(img + x1); 656203869Skib mk2(bsbpb->bpbBytesPerSec, bpb.bpbBytesPerSec); 657203869Skib mk1(bsbpb->bpbSecPerClust, bpb.bpbSecPerClust); 658203869Skib mk2(bsbpb->bpbResSectors, bpb.bpbResSectors); 659203869Skib mk1(bsbpb->bpbFATs, bpb.bpbFATs); 660203869Skib mk2(bsbpb->bpbRootDirEnts, bpb.bpbRootDirEnts); 661203869Skib mk2(bsbpb->bpbSectors, bpb.bpbSectors); 662203869Skib mk1(bsbpb->bpbMedia, bpb.bpbMedia); 663203869Skib mk2(bsbpb->bpbFATsecs, bpb.bpbFATsecs); 664203869Skib mk2(bsbpb->bpbSecPerTrack, bpb.bpbSecPerTrack); 665203869Skib mk2(bsbpb->bpbHeads, bpb.bpbHeads); 666203869Skib mk4(bsbpb->bpbHiddenSecs, bpb.bpbHiddenSecs); 667203869Skib mk4(bsbpb->bpbHugeSectors, bpb.bpbHugeSectors); 66837446Srnordier x1 += sizeof(struct bsbpb); 66937446Srnordier if (fat == 32) { 67037446Srnordier bsxbpb = (struct bsxbpb *)(img + x1); 671203869Skib mk4(bsxbpb->bpbBigFATsecs, bpb.bpbBigFATsecs); 672203869Skib mk2(bsxbpb->bpbExtFlags, 0); 673203869Skib mk2(bsxbpb->bpbFSVers, 0); 674203869Skib mk4(bsxbpb->bpbRootClust, bpb.bpbRootClust); 675203869Skib mk2(bsxbpb->bpbFSInfo, bpb.bpbFSInfo); 676203869Skib mk2(bsxbpb->bpbBackup, bpb.bpbBackup); 67737446Srnordier x1 += sizeof(struct bsxbpb); 67837446Srnordier } 67937446Srnordier bsx = (struct bsx *)(img + x1); 680203869Skib mk1(bsx->exBootSignature, 0x29); 68137446Srnordier if (Iflag) 68237446Srnordier x = opt_I; 68337446Srnordier else 68437446Srnordier x = (((u_int)(1 + tm->tm_mon) << 8 | 68537446Srnordier (u_int)tm->tm_mday) + 68637446Srnordier ((u_int)tm->tm_sec << 8 | 68737446Srnordier (u_int)(tv.tv_usec / 10))) << 16 | 68837446Srnordier ((u_int)(1900 + tm->tm_year) + 68937446Srnordier ((u_int)tm->tm_hour << 8 | 69037446Srnordier (u_int)tm->tm_min)); 691203869Skib mk4(bsx->exVolumeID, x); 692203869Skib mklabel(bsx->exVolumeLabel, opt_L ? opt_L : "NO_NAME"); 69337446Srnordier sprintf(buf, "FAT%u", fat); 694203869Skib setstr(bsx->exFileSysType, buf, sizeof(bsx->exFileSysType)); 69537446Srnordier if (!opt_B) { 69637446Srnordier x1 += sizeof(struct bsx); 69737446Srnordier bs = (struct bs *)img; 698203869Skib mk1(bs->bsJump[0], 0xeb); 699203869Skib mk1(bs->bsJump[1], x1 - 2); 700203869Skib mk1(bs->bsJump[2], 0x90); 701203869Skib setstr(bs->bsOemName, opt_O ? opt_O : "BSD4.4 ", 702203869Skib sizeof(bs->bsOemName)); 70337446Srnordier memcpy(img + x1, bootcode, sizeof(bootcode)); 704170166Strhodes mk2(img + MINBPS - 2, DOSMAGIC); 70537446Srnordier } 706203869Skib } else if (fat == 32 && bpb.bpbFSInfo != MAXU16 && 707203869Skib (lsn == bpb.bpbFSInfo || 708203869Skib (bpb.bpbBackup != MAXU16 && 709203869Skib lsn == bpb.bpbBackup + bpb.bpbFSInfo))) { 71037446Srnordier mk4(img, 0x41615252); 711170166Strhodes mk4(img + MINBPS - 28, 0x61417272); 712170166Strhodes mk4(img + MINBPS - 24, 0xffffffff); 713203869Skib mk4(img + MINBPS - 20, bpb.bpbRootClust); 714170166Strhodes mk2(img + MINBPS - 2, DOSMAGIC); 715203869Skib } else if (lsn >= bpb.bpbResSectors && lsn < dir && 716203869Skib !((lsn - bpb.bpbResSectors) % 717229550Spfg (bpb.bpbFATsecs ? bpb.bpbFATsecs : 718229550Spfg bpb.bpbBigFATsecs))) { 719203869Skib mk1(img[0], bpb.bpbMedia); 72037446Srnordier for (x = 1; x < fat * (fat == 32 ? 3 : 2) / 8; x++) 72137446Srnordier mk1(img[x], fat == 32 && x % 4 == 3 ? 0x0f : 0xff); 72237446Srnordier } else if (lsn == dir && opt_L) { 72337759Srnordier de = (struct de *)img; 724203869Skib mklabel(de->deName, opt_L); 725203869Skib mk1(de->deAttributes, 050); 72637446Srnordier x = (u_int)tm->tm_hour << 11 | 72737446Srnordier (u_int)tm->tm_min << 5 | 72837446Srnordier (u_int)tm->tm_sec >> 1; 729203869Skib mk2(de->deMTime, x); 73037446Srnordier x = (u_int)(tm->tm_year - 80) << 9 | 73137446Srnordier (u_int)(tm->tm_mon + 1) << 5 | 73237446Srnordier (u_int)tm->tm_mday; 733203869Skib mk2(de->deMDate, x); 73437446Srnordier } 735203869Skib if ((n = write(fd, img, bpb.bpbBytesPerSec)) == -1) 73637446Srnordier err(1, "%s", fname); 737203869Skib if ((unsigned)n != bpb.bpbBytesPerSec) 73837446Srnordier errx(1, "%s: can't write sector %u", fname, lsn); 73937446Srnordier } 74037446Srnordier } 74137446Srnordier return 0; 74237446Srnordier} 74337446Srnordier 74437446Srnordier/* 745102231Strhodes * Exit with error if file system is mounted. 74637446Srnordier */ 74737446Srnordierstatic void 74837446Srnordiercheck_mounted(const char *fname, mode_t mode) 74937446Srnordier{ 75037446Srnordier struct statfs *mp; 75137446Srnordier const char *s1, *s2; 75237446Srnordier size_t len; 75337446Srnordier int n, r; 75437446Srnordier 75537446Srnordier if (!(n = getmntinfo(&mp, MNT_NOWAIT))) 75637446Srnordier err(1, "getmntinfo"); 75737446Srnordier len = strlen(_PATH_DEV); 75837446Srnordier s1 = fname; 75937446Srnordier if (!strncmp(s1, _PATH_DEV, len)) 76037446Srnordier s1 += len; 76137446Srnordier r = S_ISCHR(mode) && s1 != fname && *s1 == 'r'; 76237446Srnordier for (; n--; mp++) { 76337446Srnordier s2 = mp->f_mntfromname; 76437446Srnordier if (!strncmp(s2, _PATH_DEV, len)) 76537446Srnordier s2 += len; 76637446Srnordier if ((r && s2 != mp->f_mntfromname && !strcmp(s1 + 1, s2)) || 76737446Srnordier !strcmp(s1, s2)) 76837446Srnordier errx(1, "%s is mounted on %s", fname, mp->f_mntonname); 76937446Srnordier } 77037446Srnordier} 77137446Srnordier 77237446Srnordier/* 77337446Srnordier * Get a standard format. 77437446Srnordier */ 77537446Srnordierstatic void 77637446Srnordiergetstdfmt(const char *fmt, struct bpb *bpb) 77737446Srnordier{ 77837446Srnordier u_int x, i; 77937446Srnordier 78037446Srnordier x = sizeof(stdfmt) / sizeof(stdfmt[0]); 78137446Srnordier for (i = 0; i < x && strcmp(fmt, stdfmt[i].name); i++); 78237446Srnordier if (i == x) 78337446Srnordier errx(1, "%s: unknown standard format", fmt); 78437446Srnordier *bpb = stdfmt[i].bpb; 78537446Srnordier} 78637446Srnordier 78737446Srnordier/* 78837446Srnordier * Get disk slice, partition, and geometry information. 78937446Srnordier */ 79037446Srnordierstatic void 791140384Sdelphijgetdiskinfo(int fd, const char *fname, const char *dtype, __unused int oflag, 79237446Srnordier struct bpb *bpb) 79337446Srnordier{ 794106372Sscottl struct disklabel *lp, dlp; 795106372Sscottl struct fd_type type; 796140384Sdelphij off_t ms, hs = 0; 79737446Srnordier 798106372Sscottl lp = NULL; 799106372Sscottl 800106372Sscottl /* If the user specified a disk type, try to use that */ 801106372Sscottl if (dtype != NULL) { 802106372Sscottl lp = getdiskbyname(dtype); 80337446Srnordier } 804106372Sscottl 805106372Sscottl /* Maybe it's a floppy drive */ 806106372Sscottl if (lp == NULL) { 807185345Sluigi if (ioctl(fd, DIOCGMEDIASIZE, &ms) == -1) { 808185345Sluigi struct stat st; 809185345Sluigi 810185345Sluigi if (fstat(fd, &st)) 811245763Spfg err(1, "cannot get disk size"); 812185345Sluigi /* create a fake geometry for a file image */ 813185345Sluigi ms = st.st_size; 814185345Sluigi dlp.d_secsize = 512; 815185587Sluigi dlp.d_nsectors = 63; 816185587Sluigi dlp.d_ntracks = 255; 817185345Sluigi dlp.d_secperunit = ms / dlp.d_secsize; 818185345Sluigi lp = &dlp; 819185345Sluigi } else if (ioctl(fd, FD_GTYPE, &type) != -1) { 820106372Sscottl dlp.d_secsize = 128 << type.secsize; 821106372Sscottl dlp.d_nsectors = type.sectrac; 822106372Sscottl dlp.d_ntracks = type.heads; 823106372Sscottl dlp.d_secperunit = ms / dlp.d_secsize; 824106372Sscottl lp = &dlp; 82537446Srnordier } 82637446Srnordier } 827106372Sscottl 828106372Sscottl /* Maybe it's a fixed drive */ 829106372Sscottl if (lp == NULL) { 830203869Skib if (bpb->bpbBytesPerSec) 831203869Skib dlp.d_secsize = bpb->bpbBytesPerSec; 832106372Sscottl if (ioctl(fd, DIOCGDINFO, &dlp) == -1) { 833229550Spfg if (bpb->bpbBytesPerSec == 0 && ioctl(fd, DIOCGSECTORSIZE, 834229550Spfg &dlp.d_secsize) == -1) 835245763Spfg err(1, "cannot get sector size"); 836189112Savg 837106372Sscottl dlp.d_secperunit = ms / dlp.d_secsize; 838189112Savg 839229550Spfg if (bpb->bpbSecPerTrack == 0 && ioctl(fd, DIOCGFWSECTORS, 840229550Spfg &dlp.d_nsectors) == -1) { 841245763Spfg warn("cannot get number of sectors per track"); 842189112Savg dlp.d_nsectors = 63; 843189112Savg } 844229550Spfg if (bpb->bpbHeads == 0 && 845229550Spfg ioctl(fd, DIOCGFWHEADS, &dlp.d_ntracks) == -1) { 846245763Spfg warn("cannot get number of heads"); 847189112Savg if (dlp.d_secperunit <= 63*1*1024) 848189112Savg dlp.d_ntracks = 1; 849189112Savg else if (dlp.d_secperunit <= 63*16*1024) 850189112Savg dlp.d_ntracks = 16; 851189112Savg else 852189112Savg dlp.d_ntracks = 255; 853189112Savg } 85437446Srnordier } 855106372Sscottl 856106372Sscottl hs = (ms / dlp.d_secsize) - dlp.d_secperunit; 857106372Sscottl lp = &dlp; 85837446Srnordier } 859106372Sscottl 860203869Skib if (bpb->bpbBytesPerSec == 0) 861203869Skib bpb->bpbBytesPerSec = ckgeom(fname, lp->d_secsize, "bytes/sector"); 862203869Skib if (bpb->bpbSecPerTrack == 0) 863203869Skib bpb->bpbSecPerTrack = ckgeom(fname, lp->d_nsectors, "sectors/track"); 864203869Skib if (bpb->bpbHeads == 0) 865203869Skib bpb->bpbHeads = ckgeom(fname, lp->d_ntracks, "drive heads"); 866203869Skib if (bpb->bpbHugeSectors == 0) 867203869Skib bpb->bpbHugeSectors = lp->d_secperunit; 868203869Skib if (bpb->bpbHiddenSecs == 0) 869203869Skib bpb->bpbHiddenSecs = hs; 87037446Srnordier} 87137446Srnordier 87237446Srnordier/* 87337446Srnordier * Print out BPB values. 87437446Srnordier */ 87537446Srnordierstatic void 87637446Srnordierprint_bpb(struct bpb *bpb) 87737446Srnordier{ 878229550Spfg printf("BytesPerSec=%u SecPerClust=%u ResSectors=%u FATs=%u", 879229550Spfg bpb->bpbBytesPerSec, bpb->bpbSecPerClust, bpb->bpbResSectors, 880203869Skib bpb->bpbFATs); 881203869Skib if (bpb->bpbRootDirEnts) 882203869Skib printf(" RootDirEnts=%u", bpb->bpbRootDirEnts); 883203869Skib if (bpb->bpbSectors) 884203869Skib printf(" Sectors=%u", bpb->bpbSectors); 885203869Skib printf(" Media=%#x", bpb->bpbMedia); 886203869Skib if (bpb->bpbFATsecs) 887203869Skib printf(" FATsecs=%u", bpb->bpbFATsecs); 888229550Spfg printf(" SecPerTrack=%u Heads=%u HiddenSecs=%u", bpb->bpbSecPerTrack, 889229550Spfg bpb->bpbHeads, bpb->bpbHiddenSecs); 890203869Skib if (bpb->bpbHugeSectors) 891203869Skib printf(" HugeSectors=%u", bpb->bpbHugeSectors); 892203869Skib if (!bpb->bpbFATsecs) { 893229550Spfg printf(" FATsecs=%u RootCluster=%u", bpb->bpbBigFATsecs, 894229550Spfg bpb->bpbRootClust); 895203869Skib printf(" FSInfo="); 896203869Skib printf(bpb->bpbFSInfo == MAXU16 ? "%#x" : "%u", bpb->bpbFSInfo); 897203869Skib printf(" Backup="); 898203869Skib printf(bpb->bpbBackup == MAXU16 ? "%#x" : "%u", bpb->bpbBackup); 89937446Srnordier } 90037446Srnordier printf("\n"); 90137446Srnordier} 90237446Srnordier 90337446Srnordier/* 90437446Srnordier * Check a disk geometry value. 90537446Srnordier */ 90637446Srnordierstatic u_int 90737446Srnordierckgeom(const char *fname, u_int val, const char *msg) 90837446Srnordier{ 90937446Srnordier if (!val) 91037446Srnordier errx(1, "%s: no default %s", fname, msg); 91137446Srnordier if (val > MAXU16) 912106372Sscottl errx(1, "%s: illegal %s %d", fname, msg, val); 91337446Srnordier return val; 91437446Srnordier} 91537446Srnordier 91637446Srnordier/* 91737446Srnordier * Convert and check a numeric option argument. 91837446Srnordier */ 91937446Srnordierstatic u_int 92037446Srnordierargtou(const char *arg, u_int lo, u_int hi, const char *msg) 92137446Srnordier{ 92237446Srnordier char *s; 92337446Srnordier u_long x; 92437446Srnordier 92537446Srnordier errno = 0; 92637446Srnordier x = strtoul(arg, &s, 0); 92737446Srnordier if (errno || !*arg || *s || x < lo || x > hi) 92837446Srnordier errx(1, "%s: bad %s", arg, msg); 92937446Srnordier return x; 93037446Srnordier} 93137446Srnordier 93237446Srnordier/* 933185587Sluigi * Same for off_t, with optional skmgpP suffix 934185587Sluigi */ 935185587Sluigistatic off_t 936185587Sluigiargtooff(const char *arg, const char *msg) 937185587Sluigi{ 938185587Sluigi char *s; 939185587Sluigi off_t x; 940185587Sluigi 941229550Spfg errno = 0; 942185587Sluigi x = strtoll(arg, &s, 0); 943185587Sluigi /* allow at most one extra char */ 944185587Sluigi if (errno || x < 0 || (s[0] && s[1]) ) 945185587Sluigi errx(1, "%s: bad %s", arg, msg); 946185587Sluigi if (*s) { /* the extra char is the multiplier */ 947185587Sluigi switch (*s) { 948185587Sluigi default: 949185587Sluigi errx(1, "%s: bad %s", arg, msg); 950185587Sluigi /* notreached */ 951185587Sluigi 952229550Spfg case 's': /* sector */ 953185587Sluigi case 'S': 954229550Spfg x <<= 9; /* times 512 */ 955185587Sluigi break; 956185587Sluigi 957229550Spfg case 'k': /* kilobyte */ 958185587Sluigi case 'K': 959229550Spfg x <<= 10; /* times 1024 */ 960185587Sluigi break; 961185587Sluigi 962229550Spfg case 'm': /* megabyte */ 963185587Sluigi case 'M': 964229550Spfg x <<= 20; /* times 1024*1024 */ 965185587Sluigi break; 966185587Sluigi 967229550Spfg case 'g': /* gigabyte */ 968185587Sluigi case 'G': 969229550Spfg x <<= 30; /* times 1024*1024*1024 */ 970185587Sluigi break; 971185587Sluigi 972229550Spfg case 'p': /* partition start */ 973229550Spfg case 'P': 974229550Spfg case 'l': /* partition length */ 975229550Spfg case 'L': 976185587Sluigi errx(1, "%s: not supported yet %s", arg, msg); 977185587Sluigi /* notreached */ 978185587Sluigi } 979185587Sluigi } 980185587Sluigi return x; 981185587Sluigi} 982185587Sluigi 983185587Sluigi/* 98437446Srnordier * Check a volume label. 98537446Srnordier */ 98637446Srnordierstatic int 98737446Srnordieroklabel(const char *src) 98837446Srnordier{ 98937446Srnordier int c, i; 99037446Srnordier 99137446Srnordier for (i = 0; i <= 11; i++) { 99237446Srnordier c = (u_char)*src++; 99337446Srnordier if (c < ' ' + !i || strchr("\"*+,./:;<=>?[\\]|", c)) 99437446Srnordier break; 99537446Srnordier } 99637446Srnordier return i && !c; 99737446Srnordier} 99837446Srnordier 99937446Srnordier/* 100037446Srnordier * Make a volume label. 100137446Srnordier */ 100237446Srnordierstatic void 100337446Srnordiermklabel(u_int8_t *dest, const char *src) 100437446Srnordier{ 100537446Srnordier int c, i; 100637446Srnordier 100737446Srnordier for (i = 0; i < 11; i++) { 100837446Srnordier c = *src ? toupper(*src++) : ' '; 100937446Srnordier *dest++ = !i && c == '\xe5' ? 5 : c; 101037446Srnordier } 101137446Srnordier} 101237446Srnordier 101337446Srnordier/* 101437446Srnordier * Copy string, padding with spaces. 101537446Srnordier */ 101637446Srnordierstatic void 101737446Srnordiersetstr(u_int8_t *dest, const char *src, size_t len) 101837446Srnordier{ 101937446Srnordier while (len--) 102037446Srnordier *dest++ = *src ? *src++ : ' '; 102137446Srnordier} 102237446Srnordier 102337446Srnordier/* 102437446Srnordier * Print usage message. 102537446Srnordier */ 102637446Srnordierstatic void 102737446Srnordierusage(void) 102837446Srnordier{ 1029190924Sed fprintf(stderr, 1030190924Sed "usage: newfs_msdos [ -options ] special [disktype]\n" 1031190924Sed "where the options are:\n" 1032190925Sed "\t-@ create file system at specified offset\n" 1033190924Sed "\t-B get bootstrap from file\n" 1034190925Sed "\t-C create image file with specified size\n" 1035190924Sed "\t-F FAT type (12, 16, or 32)\n" 1036190924Sed "\t-I volume ID\n" 1037190924Sed "\t-L volume label\n" 1038190924Sed "\t-N don't create file system: just print out parameters\n" 1039190924Sed "\t-O OEM string\n" 1040190924Sed "\t-S bytes/sector\n" 1041190924Sed "\t-a sectors/FAT\n" 1042190924Sed "\t-b block size\n" 1043190924Sed "\t-c sectors/cluster\n" 1044190924Sed "\t-e root directory entries\n" 1045190924Sed "\t-f standard format\n" 1046190924Sed "\t-h drive heads\n" 1047190924Sed "\t-i file system info sector\n" 1048190924Sed "\t-k backup boot sector\n" 1049190924Sed "\t-m media descriptor\n" 1050190924Sed "\t-n number of FATs\n" 1051190924Sed "\t-o hidden sectors\n" 1052190924Sed "\t-r reserved sectors\n" 1053190924Sed "\t-s file system size (sectors)\n" 1054190924Sed "\t-u sectors/track\n"); 1055190924Sed exit(1); 105637446Srnordier} 1057223945Sae 1058223945Saestatic void 1059223945Saeinfohandler(int sig __unused) 1060223945Sae{ 1061223945Sae 1062223945Sae got_siginfo = 1; 1063223945Sae} 1064