newfs_msdos.c revision 223946
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 223946 2011-07-12 10:07:07Z ae $"; 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 */ 69203868Skib#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 { 100203869Skib u_int8_t bsJump[3]; /* bootstrap entry point */ 101203869Skib u_int8_t bsOemName[8]; /* OEM name and version */ 10237446Srnordier}; 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 */ 11737446Srnordier}; 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 */ 126203869Skib u_int8_t bpbReserved[12]; /* reserved */ 12737446Srnordier}; 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 */ 13637446Srnordier}; 13737446Srnordier 13837446Srnordierstruct de { 139203869Skib u_int8_t deName[11]; /* name and extension */ 140203869Skib u_int8_t deAttributes; /* attributes */ 14137446Srnordier u_int8_t rsvd[10]; /* reserved */ 142203869Skib u_int8_t deMTime[2]; /* creation time */ 143203869Skib u_int8_t deMDate[2]; /* creation date */ 144203869Skib u_int8_t deStartCluster[2]; /* starting cluster */ 145203869Skib u_int8_t deFileSize[4]; /* size */ 14637446Srnordier}; 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 */ 163203869Skib u_int bpbFSInfo; /* file system info sector */ 164203869Skib u_int bpbBackup; /* backup boot sector */ 16537446Srnordier}; 16637446Srnordier 167140384Sdelphij#define BPBGAP 0, 0, 0, 0, 0, 0 168140384Sdelphij 169203868Skib#define INIT(a, b, c, d, e, f, g, h, i, j) \ 170203869Skib { .bpbBytesPerSec = a, .bpbSecPerClust = b, .bpbResSectors = c, .bpbFATs = d, .bpbRootDirEnts = e, \ 171203869Skib .bpbSectors = f, .bpbMedia = g, .bpbFATsecs = h, .bpbSecPerTrack = i, .bpbHeads = j, } 17237446Srnordierstatic struct { 17337446Srnordier const char *name; 17437446Srnordier struct bpb bpb; 175190927Sed} const stdfmt[] = { 176203868Skib {"160", INIT(512, 1, 1, 2, 64, 320, 0xfe, 1, 8, 1)}, 177203868Skib {"180", INIT(512, 1, 1, 2, 64, 360, 0xfc, 2, 9, 1)}, 178203868Skib {"320", INIT(512, 2, 1, 2, 112, 640, 0xff, 1, 8, 2)}, 179203868Skib {"360", INIT(512, 2, 1, 2, 112, 720, 0xfd, 2, 9, 2)}, 180203868Skib {"640", INIT(512, 2, 1, 2, 112, 1280, 0xfb, 2, 8, 2)}, 181203868Skib {"720", INIT(512, 2, 1, 2, 112, 1440, 0xf9, 3, 9, 2)}, 182203868Skib {"1200", INIT(512, 1, 1, 2, 224, 2400, 0xf9, 7, 15, 2)}, 183203868Skib {"1232", INIT(1024,1, 1, 2, 192, 1232, 0xfe, 2, 8, 2)}, 184203868Skib {"1440", INIT(512, 1, 1, 2, 224, 2880, 0xf0, 9, 18, 2)}, 185203868Skib {"2880", INIT(512, 2, 1, 2, 240, 5760, 0xf0, 9, 36, 2)} 18637446Srnordier}; 18737446Srnordier 188190927Sedstatic const u_int8_t bootcode[] = { 18937446Srnordier 0xfa, /* cli */ 19037446Srnordier 0x31, 0xc0, /* xor ax,ax */ 19137446Srnordier 0x8e, 0xd0, /* mov ss,ax */ 19237446Srnordier 0xbc, 0x00, 0x7c, /* mov sp,7c00h */ 19337446Srnordier 0xfb, /* sti */ 19437446Srnordier 0x8e, 0xd8, /* mov ds,ax */ 19537446Srnordier 0xe8, 0x00, 0x00, /* call $ + 3 */ 19637446Srnordier 0x5e, /* pop si */ 19737446Srnordier 0x83, 0xc6, 0x19, /* add si,+19h */ 19837446Srnordier 0xbb, 0x07, 0x00, /* mov bx,0007h */ 19937446Srnordier 0xfc, /* cld */ 20037446Srnordier 0xac, /* lodsb */ 20137446Srnordier 0x84, 0xc0, /* test al,al */ 20237446Srnordier 0x74, 0x06, /* jz $ + 8 */ 20337446Srnordier 0xb4, 0x0e, /* mov ah,0eh */ 20437446Srnordier 0xcd, 0x10, /* int 10h */ 20537446Srnordier 0xeb, 0xf5, /* jmp $ - 9 */ 20637446Srnordier 0x30, 0xe4, /* xor ah,ah */ 20737446Srnordier 0xcd, 0x16, /* int 16h */ 20837446Srnordier 0xcd, 0x19, /* int 19h */ 20937446Srnordier 0x0d, 0x0a, 21037446Srnordier 'N', 'o', 'n', '-', 's', 'y', 's', 't', 21137446Srnordier 'e', 'm', ' ', 'd', 'i', 's', 'k', 21237446Srnordier 0x0d, 0x0a, 21337446Srnordier 'P', 'r', 'e', 's', 's', ' ', 'a', 'n', 21437446Srnordier 'y', ' ', 'k', 'e', 'y', ' ', 't', 'o', 21537446Srnordier ' ', 'r', 'e', 'b', 'o', 'o', 't', 21637446Srnordier 0x0d, 0x0a, 21737446Srnordier 0 21837446Srnordier}; 21937446Srnordier 220223945Saestatic volatile sig_atomic_t got_siginfo; 221223945Saestatic void infohandler(int); 222223945Sae 22337446Srnordierstatic void check_mounted(const char *, mode_t); 22437446Srnordierstatic void getstdfmt(const char *, struct bpb *); 22537446Srnordierstatic void getdiskinfo(int, const char *, const char *, int, 22637446Srnordier struct bpb *); 22737446Srnordierstatic void print_bpb(struct bpb *); 22837446Srnordierstatic u_int ckgeom(const char *, u_int, const char *); 22937446Srnordierstatic u_int argtou(const char *, u_int, u_int, const char *); 230185587Sluigistatic off_t argtooff(const char *, const char *); 23137446Srnordierstatic int oklabel(const char *); 23237446Srnordierstatic void mklabel(u_int8_t *, const char *); 23337446Srnordierstatic void setstr(u_int8_t *, const char *, size_t); 23437446Srnordierstatic void usage(void); 23537446Srnordier 23637446Srnordier/* 237102231Strhodes * Construct a FAT12, FAT16, or FAT32 file system. 23837446Srnordier */ 23937446Srnordierint 24037446Srnordiermain(int argc, char *argv[]) 24137446Srnordier{ 242190927Sed 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:"; 243190927Sed const char *opt_B = NULL, *opt_L = NULL, *opt_O = NULL, *opt_f = NULL; 244190927Sed u_int opt_F = 0, opt_I = 0, opt_S = 0, opt_a = 0, opt_b = 0, opt_c = 0; 245190927Sed u_int opt_e = 0, opt_h = 0, opt_i = 0, opt_k = 0, opt_m = 0, opt_n = 0; 246190927Sed u_int opt_o = 0, opt_r = 0, opt_s = 0, opt_u = 0; 247190927Sed int opt_N = 0; 248190927Sed int Iflag = 0, mflag = 0, oflag = 0; 24937446Srnordier char buf[MAXPATHLEN]; 250223945Sae struct sigaction si_sa; 25137446Srnordier struct stat sb; 25237446Srnordier struct timeval tv; 25337446Srnordier struct bpb bpb; 25437446Srnordier struct tm *tm; 25537446Srnordier struct bs *bs; 25637446Srnordier struct bsbpb *bsbpb; 25737446Srnordier struct bsxbpb *bsxbpb; 25837446Srnordier struct bsx *bsx; 25937446Srnordier struct de *de; 26037446Srnordier u_int8_t *img; 26137446Srnordier const char *fname, *dtype, *bname; 26237446Srnordier ssize_t n; 26340487Sbde time_t now; 26437446Srnordier u_int fat, bss, rds, cls, dir, lsn, x, x1, x2; 26537446Srnordier int ch, fd, fd1; 266190927Sed off_t opt_create = 0, opt_ofs = 0; 26737446Srnordier 26837446Srnordier while ((ch = getopt(argc, argv, opts)) != -1) 26937446Srnordier switch (ch) { 270185587Sluigi case '@': 271185587Sluigi opt_ofs = argtooff(optarg, "offset"); 272185587Sluigi break; 27337446Srnordier case 'N': 27437446Srnordier opt_N = 1; 27537446Srnordier break; 27637446Srnordier case 'B': 27737446Srnordier opt_B = optarg; 27837446Srnordier break; 279185587Sluigi case 'C': 280185587Sluigi opt_create = argtooff(optarg, "create size"); 281185587Sluigi break; 28237446Srnordier case 'F': 28337446Srnordier if (strcmp(optarg, "12") && 28437446Srnordier strcmp(optarg, "16") && 28537446Srnordier strcmp(optarg, "32")) 28637446Srnordier errx(1, "%s: bad FAT type", optarg); 28737446Srnordier opt_F = atoi(optarg); 28837446Srnordier break; 28937446Srnordier case 'I': 29037446Srnordier opt_I = argto4(optarg, 0, "volume ID"); 29137446Srnordier Iflag = 1; 29237446Srnordier break; 29337446Srnordier case 'L': 29437446Srnordier if (!oklabel(optarg)) 29537446Srnordier errx(1, "%s: bad volume label", optarg); 29637446Srnordier opt_L = optarg; 29737446Srnordier break; 29837446Srnordier case 'O': 29937446Srnordier if (strlen(optarg) > 8) 30037446Srnordier errx(1, "%s: bad OEM string", optarg); 30137446Srnordier opt_O = optarg; 30237446Srnordier break; 30337446Srnordier case 'S': 30437446Srnordier opt_S = argto2(optarg, 1, "bytes/sector"); 30537446Srnordier break; 30637446Srnordier case 'a': 30737446Srnordier opt_a = argto4(optarg, 1, "sectors/FAT"); 30837446Srnordier break; 30937446Srnordier case 'b': 31037446Srnordier opt_b = argtox(optarg, 1, "block size"); 31137446Srnordier opt_c = 0; 31237446Srnordier break; 31337446Srnordier case 'c': 31437446Srnordier opt_c = argto1(optarg, 1, "sectors/cluster"); 31537446Srnordier opt_b = 0; 31637446Srnordier break; 31737446Srnordier case 'e': 31837446Srnordier opt_e = argto2(optarg, 1, "directory entries"); 31937446Srnordier break; 32037446Srnordier case 'f': 32137446Srnordier opt_f = optarg; 32237446Srnordier break; 32337446Srnordier case 'h': 32437446Srnordier opt_h = argto2(optarg, 1, "drive heads"); 32537446Srnordier break; 32637446Srnordier case 'i': 32737446Srnordier opt_i = argto2(optarg, 1, "info sector"); 32837446Srnordier break; 32937446Srnordier case 'k': 33037446Srnordier opt_k = argto2(optarg, 1, "backup sector"); 33137446Srnordier break; 33237446Srnordier case 'm': 33337446Srnordier opt_m = argto1(optarg, 0, "media descriptor"); 33437446Srnordier mflag = 1; 33537446Srnordier break; 33637446Srnordier case 'n': 33737446Srnordier opt_n = argto1(optarg, 1, "number of FATs"); 33837446Srnordier break; 33937446Srnordier case 'o': 34037446Srnordier opt_o = argto4(optarg, 0, "hidden sectors"); 34137446Srnordier oflag = 1; 34237446Srnordier break; 34337446Srnordier case 'r': 34437446Srnordier opt_r = argto2(optarg, 1, "reserved sectors"); 34537446Srnordier break; 34637446Srnordier case 's': 347102231Strhodes opt_s = argto4(optarg, 1, "file system size"); 34837446Srnordier break; 34937446Srnordier case 'u': 35037446Srnordier opt_u = argto2(optarg, 1, "sectors/track"); 35137446Srnordier break; 35237446Srnordier default: 35337446Srnordier usage(); 35437446Srnordier } 35537446Srnordier argc -= optind; 35637446Srnordier argv += optind; 35737446Srnordier if (argc < 1 || argc > 2) 35837446Srnordier usage(); 35937446Srnordier fname = *argv++; 360190932Sed if (!opt_create && !strchr(fname, '/')) { 36163892Sasmodai snprintf(buf, sizeof(buf), "%s%s", _PATH_DEV, fname); 36237446Srnordier if (!(fname = strdup(buf))) 36337446Srnordier err(1, NULL); 36437446Srnordier } 36537446Srnordier dtype = *argv; 366185587Sluigi if (opt_create) { 367185587Sluigi if (opt_N) 368185587Sluigi errx(1, "create (-C) is incompatible with -N"); 369185587Sluigi fd = open(fname, O_RDWR | O_CREAT | O_TRUNC, 0644); 370185587Sluigi if (fd == -1) 371185587Sluigi errx(1, "failed to create %s", fname); 372190929Sed if (ftruncate(fd, opt_create)) 373185594Smlaier errx(1, "failed to initialize %jd bytes", (intmax_t)opt_create); 374190930Sed } else if ((fd = open(fname, opt_N ? O_RDONLY : O_RDWR)) == -1) 37537446Srnordier err(1, "%s", fname); 376190930Sed if (fstat(fd, &sb)) 377190930Sed err(1, "%s", fname); 378190931Sed if (opt_create) { 379190931Sed if (!S_ISREG(sb.st_mode)) 380190931Sed warnx("warning, %s is not a regular file", fname); 381190931Sed } else { 382190931Sed if (!S_ISCHR(sb.st_mode)) 383190931Sed warnx("warning, %s is not a character device", fname); 384190931Sed } 38537446Srnordier if (!opt_N) 38637446Srnordier check_mounted(fname, sb.st_mode); 387185587Sluigi if (opt_ofs && opt_ofs != lseek(fd, opt_ofs, SEEK_SET)) 388185594Smlaier errx(1, "cannot seek to %jd", (intmax_t)opt_ofs); 38937446Srnordier memset(&bpb, 0, sizeof(bpb)); 39037446Srnordier if (opt_f) { 39137446Srnordier getstdfmt(opt_f, &bpb); 392203869Skib bpb.bpbHugeSectors = bpb.bpbSectors; 393203869Skib bpb.bpbSectors = 0; 394203869Skib bpb.bpbBigFATsecs = bpb.bpbFATsecs; 395203869Skib bpb.bpbFATsecs = 0; 39637446Srnordier } 39737446Srnordier if (opt_h) 398203869Skib bpb.bpbHeads = opt_h; 39937446Srnordier if (opt_u) 400203869Skib bpb.bpbSecPerTrack = opt_u; 40137446Srnordier if (opt_S) 402203869Skib bpb.bpbBytesPerSec = opt_S; 40337446Srnordier if (opt_s) 404203869Skib bpb.bpbHugeSectors = opt_s; 40537446Srnordier if (oflag) 406203869Skib bpb.bpbHiddenSecs = opt_o; 407185587Sluigi if (!(opt_f || (opt_h && opt_u && opt_S && opt_s && oflag))) { 408185587Sluigi off_t delta; 40937446Srnordier getdiskinfo(fd, fname, dtype, oflag, &bpb); 410203869Skib bpb.bpbHugeSectors -= (opt_ofs / bpb.bpbBytesPerSec); 411203869Skib delta = bpb.bpbHugeSectors % bpb.bpbSecPerTrack; 412185587Sluigi if (delta != 0) { 413185587Sluigi warnx("trim %d sectors to adjust to a multiple of %d", 414203869Skib (int)delta, bpb.bpbSecPerTrack); 415203869Skib bpb.bpbHugeSectors -= delta; 416185587Sluigi } 417203869Skib if (bpb.bpbSecPerClust == 0) { /* set defaults */ 418203869Skib if (bpb.bpbHugeSectors <= 6000) /* about 3MB -> 512 bytes */ 419203869Skib bpb.bpbSecPerClust = 1; 420203869Skib else if (bpb.bpbHugeSectors <= (1<<17)) /* 64M -> 4k */ 421203869Skib bpb.bpbSecPerClust = 8; 422203869Skib else if (bpb.bpbHugeSectors <= (1<<19)) /* 256M -> 8k */ 423203869Skib bpb.bpbSecPerClust = 16; 424203869Skib else if (bpb.bpbHugeSectors <= (1<<21)) /* 1G -> 16k */ 425203869Skib bpb.bpbSecPerClust = 32; 426185587Sluigi else 427203869Skib bpb.bpbSecPerClust = 64; /* otherwise 32k */ 428185587Sluigi } 429185587Sluigi } 430203869Skib if (!powerof2(bpb.bpbBytesPerSec)) 431203869Skib errx(1, "bytes/sector (%u) is not a power of 2", bpb.bpbBytesPerSec); 432203869Skib if (bpb.bpbBytesPerSec < MINBPS) 43337446Srnordier errx(1, "bytes/sector (%u) is too small; minimum is %u", 434203869Skib bpb.bpbBytesPerSec, MINBPS); 43548954Sbillf if (!(fat = opt_F)) { 43637446Srnordier if (opt_f) 43737446Srnordier fat = 12; 43837446Srnordier else if (!opt_e && (opt_i || opt_k)) 43937446Srnordier fat = 32; 44048954Sbillf } 44137446Srnordier if ((fat == 32 && opt_e) || (fat != 32 && (opt_i || opt_k))) 44237446Srnordier errx(1, "-%c is not a legal FAT%s option", 44337446Srnordier fat == 32 ? 'e' : opt_i ? 'i' : 'k', 44437446Srnordier fat == 32 ? "32" : "12/16"); 44537446Srnordier if (opt_f && fat == 32) 446203869Skib bpb.bpbRootDirEnts = 0; 44737446Srnordier if (opt_b) { 44837446Srnordier if (!powerof2(opt_b)) 44937446Srnordier errx(1, "block size (%u) is not a power of 2", opt_b); 450203869Skib if (opt_b < bpb.bpbBytesPerSec) 45137446Srnordier errx(1, "block size (%u) is too small; minimum is %u", 452203869Skib opt_b, bpb.bpbBytesPerSec); 453203869Skib if (opt_b > bpb.bpbBytesPerSec * MAXSPC) 45437446Srnordier errx(1, "block size (%u) is too large; maximum is %u", 455203869Skib opt_b, bpb.bpbBytesPerSec * MAXSPC); 456203869Skib bpb.bpbSecPerClust = opt_b / bpb.bpbBytesPerSec; 45737446Srnordier } 45837446Srnordier if (opt_c) { 45937446Srnordier if (!powerof2(opt_c)) 46037446Srnordier errx(1, "sectors/cluster (%u) is not a power of 2", opt_c); 461203869Skib bpb.bpbSecPerClust = opt_c; 46237446Srnordier } 46337446Srnordier if (opt_r) 464203869Skib bpb.bpbResSectors = opt_r; 46537446Srnordier if (opt_n) { 46637446Srnordier if (opt_n > MAXNFT) 46737446Srnordier errx(1, "number of FATs (%u) is too large; maximum is %u", 46837446Srnordier opt_n, MAXNFT); 469203869Skib bpb.bpbFATs = opt_n; 47037446Srnordier } 47137446Srnordier if (opt_e) 472203869Skib bpb.bpbRootDirEnts = opt_e; 47337446Srnordier if (mflag) { 47437446Srnordier if (opt_m < 0xf0) 47541586Srnordier errx(1, "illegal media descriptor (%#x)", opt_m); 476203869Skib bpb.bpbMedia = opt_m; 47737446Srnordier } 47837446Srnordier if (opt_a) 479203869Skib bpb.bpbBigFATsecs = opt_a; 48037446Srnordier if (opt_i) 481203869Skib bpb.bpbFSInfo = opt_i; 48237446Srnordier if (opt_k) 483203869Skib bpb.bpbBackup = opt_k; 48437446Srnordier bss = 1; 48537446Srnordier bname = NULL; 48637446Srnordier fd1 = -1; 48737446Srnordier if (opt_B) { 48837446Srnordier bname = opt_B; 48937446Srnordier if (!strchr(bname, '/')) { 49042261Sjkh snprintf(buf, sizeof(buf), "/boot/%s", bname); 49137446Srnordier if (!(bname = strdup(buf))) 49237446Srnordier err(1, NULL); 49337446Srnordier } 49437446Srnordier if ((fd1 = open(bname, O_RDONLY)) == -1 || fstat(fd1, &sb)) 49537446Srnordier err(1, "%s", bname); 496203869Skib if (!S_ISREG(sb.st_mode) || sb.st_size % bpb.bpbBytesPerSec || 497203869Skib sb.st_size < bpb.bpbBytesPerSec || sb.st_size > bpb.bpbBytesPerSec * MAXU16) 49837446Srnordier errx(1, "%s: inappropriate file type or format", bname); 499203869Skib bss = sb.st_size / bpb.bpbBytesPerSec; 50037446Srnordier } 501203869Skib if (!bpb.bpbFATs) 502203869Skib bpb.bpbFATs = 2; 50348954Sbillf if (!fat) { 504203869Skib if (bpb.bpbHugeSectors < (bpb.bpbResSectors ? bpb.bpbResSectors : bss) + 505203869Skib howmany((RESFTE + (bpb.bpbSecPerClust ? MINCLS16 : MAXCLS12 + 1)) * 506203869Skib ((bpb.bpbSecPerClust ? 16 : 12) / BPN), bpb.bpbBytesPerSec * NPB) * 507203869Skib bpb.bpbFATs + 508203869Skib howmany(bpb.bpbRootDirEnts ? bpb.bpbRootDirEnts : DEFRDE, 509203869Skib bpb.bpbBytesPerSec / sizeof(struct de)) + 510203869Skib (bpb.bpbSecPerClust ? MINCLS16 : MAXCLS12 + 1) * 511203869Skib (bpb.bpbSecPerClust ? bpb.bpbSecPerClust : howmany(DEFBLK, bpb.bpbBytesPerSec))) 51237446Srnordier fat = 12; 513203869Skib else if (bpb.bpbRootDirEnts || bpb.bpbHugeSectors < 514203869Skib (bpb.bpbResSectors ? bpb.bpbResSectors : bss) + 515203869Skib howmany((RESFTE + MAXCLS16) * 2, bpb.bpbBytesPerSec) * bpb.bpbFATs + 516203869Skib howmany(DEFRDE, bpb.bpbBytesPerSec / sizeof(struct de)) + 51737446Srnordier (MAXCLS16 + 1) * 518203869Skib (bpb.bpbSecPerClust ? bpb.bpbSecPerClust : howmany(8192, bpb.bpbBytesPerSec))) 51937446Srnordier fat = 16; 52037446Srnordier else 52137446Srnordier fat = 32; 52248954Sbillf } 52337446Srnordier x = bss; 52437446Srnordier if (fat == 32) { 525203869Skib if (!bpb.bpbFSInfo) { 526203869Skib if (x == MAXU16 || x == bpb.bpbBackup) 52737446Srnordier errx(1, "no room for info sector"); 528203869Skib bpb.bpbFSInfo = x; 52937446Srnordier } 530203869Skib if (bpb.bpbFSInfo != MAXU16 && x <= bpb.bpbFSInfo) 531203869Skib x = bpb.bpbFSInfo + 1; 532203869Skib if (!bpb.bpbBackup) { 53337446Srnordier if (x == MAXU16) 53437446Srnordier errx(1, "no room for backup sector"); 535203869Skib bpb.bpbBackup = x; 536203869Skib } else if (bpb.bpbBackup != MAXU16 && bpb.bpbBackup == bpb.bpbFSInfo) 53737446Srnordier errx(1, "backup sector would overwrite info sector"); 538203869Skib if (bpb.bpbBackup != MAXU16 && x <= bpb.bpbBackup) 539203869Skib x = bpb.bpbBackup + 1; 54037446Srnordier } 541203869Skib if (!bpb.bpbResSectors) 542203869Skib bpb.bpbResSectors = fat == 32 ? MAX(x, MAX(16384 / bpb.bpbBytesPerSec, 4)) : x; 543203869Skib else if (bpb.bpbResSectors < x) 544203869Skib errx(1, "too few reserved sectors (need %d have %d)", x, bpb.bpbResSectors); 545203869Skib if (fat != 32 && !bpb.bpbRootDirEnts) 546203869Skib bpb.bpbRootDirEnts = DEFRDE; 547203869Skib rds = howmany(bpb.bpbRootDirEnts, bpb.bpbBytesPerSec / sizeof(struct de)); 548203869Skib if (!bpb.bpbSecPerClust) 549203869Skib for (bpb.bpbSecPerClust = howmany(fat == 16 ? DEFBLK16 : DEFBLK, bpb.bpbBytesPerSec); 550203869Skib bpb.bpbSecPerClust < MAXSPC && 551203869Skib bpb.bpbResSectors + 55237446Srnordier howmany((RESFTE + maxcls(fat)) * (fat / BPN), 553203869Skib bpb.bpbBytesPerSec * NPB) * bpb.bpbFATs + 55437446Srnordier rds + 555203869Skib (u_int64_t)(maxcls(fat) + 1) * bpb.bpbSecPerClust <= bpb.bpbHugeSectors; 556203869Skib bpb.bpbSecPerClust <<= 1); 557203869Skib if (fat != 32 && bpb.bpbBigFATsecs > MAXU16) 55837446Srnordier errx(1, "too many sectors/FAT for FAT12/16"); 559203869Skib x1 = bpb.bpbResSectors + rds; 560203869Skib x = bpb.bpbBigFATsecs ? bpb.bpbBigFATsecs : 1; 561203869Skib if (x1 + (u_int64_t)x * bpb.bpbFATs > bpb.bpbHugeSectors) 562102231Strhodes errx(1, "meta data exceeds file system size"); 563203869Skib x1 += x * bpb.bpbFATs; 564203869Skib x = (u_int64_t)(bpb.bpbHugeSectors - x1) * bpb.bpbBytesPerSec * NPB / 565203869Skib (bpb.bpbSecPerClust * bpb.bpbBytesPerSec * NPB + fat / BPN * bpb.bpbFATs); 56637446Srnordier x2 = howmany((RESFTE + MIN(x, maxcls(fat))) * (fat / BPN), 567203869Skib bpb.bpbBytesPerSec * NPB); 568203869Skib if (!bpb.bpbBigFATsecs) { 569203869Skib bpb.bpbBigFATsecs = x2; 570203869Skib x1 += (bpb.bpbBigFATsecs - 1) * bpb.bpbFATs; 57137446Srnordier } 572203869Skib cls = (bpb.bpbHugeSectors - x1) / bpb.bpbSecPerClust; 573203869Skib x = (u_int64_t)bpb.bpbBigFATsecs * bpb.bpbBytesPerSec * NPB / (fat / BPN) - RESFTE; 57437446Srnordier if (cls > x) 57537446Srnordier cls = x; 576203869Skib if (bpb.bpbBigFATsecs < x2) 577102231Strhodes warnx("warning: sectors/FAT limits file system to %u clusters", 57837446Srnordier cls); 57937446Srnordier if (cls < mincls(fat)) 58059215Simp errx(1, "%u clusters too few clusters for FAT%u, need %u", cls, fat, 58159215Simp mincls(fat)); 58237446Srnordier if (cls > maxcls(fat)) { 58337446Srnordier cls = maxcls(fat); 584203869Skib bpb.bpbHugeSectors = x1 + (cls + 1) * bpb.bpbSecPerClust - 1; 585102231Strhodes warnx("warning: FAT type limits file system to %u sectors", 586203869Skib bpb.bpbHugeSectors); 58737446Srnordier } 58837446Srnordier printf("%s: %u sector%s in %u FAT%u cluster%s " 589203869Skib "(%u bytes/cluster)\n", fname, cls * bpb.bpbSecPerClust, 590203869Skib cls * bpb.bpbSecPerClust == 1 ? "" : "s", cls, fat, 591203869Skib cls == 1 ? "" : "s", bpb.bpbBytesPerSec * bpb.bpbSecPerClust); 592203869Skib if (!bpb.bpbMedia) 593203869Skib bpb.bpbMedia = !bpb.bpbHiddenSecs ? 0xf0 : 0xf8; 59437446Srnordier if (fat == 32) 595203869Skib bpb.bpbRootClust = RESFTE; 596203869Skib if (bpb.bpbHiddenSecs + bpb.bpbHugeSectors <= MAXU16) { 597203869Skib bpb.bpbSectors = bpb.bpbHugeSectors; 598203869Skib bpb.bpbHugeSectors = 0; 59937446Srnordier } 60037446Srnordier if (fat != 32) { 601203869Skib bpb.bpbFATsecs = bpb.bpbBigFATsecs; 602203869Skib bpb.bpbBigFATsecs = 0; 60337446Srnordier } 60437446Srnordier print_bpb(&bpb); 60537446Srnordier if (!opt_N) { 60637446Srnordier gettimeofday(&tv, NULL); 60740487Sbde now = tv.tv_sec; 60840487Sbde tm = localtime(&now); 609203869Skib if (!(img = malloc(bpb.bpbBytesPerSec))) 61037446Srnordier err(1, NULL); 611203869Skib dir = bpb.bpbResSectors + (bpb.bpbFATsecs ? bpb.bpbFATsecs : bpb.bpbBigFATsecs) * bpb.bpbFATs; 612223945Sae memset(&si_sa, 0, sizeof(si_sa)); 613223945Sae si_sa.sa_handler = infohandler; 614223946Sae if (sigaction(SIGINFO, &si_sa, NULL) == -1) 615223945Sae err(1, "sigaction SIGINFO"); 616203869Skib for (lsn = 0; lsn < dir + (fat == 32 ? bpb.bpbSecPerClust : rds); lsn++) { 617223945Sae if (got_siginfo) { 618223945Sae fprintf(stderr,"%s: writing sector %u of %u (%u%%)\n", 619223945Sae fname, lsn, 620223945Sae (dir + (fat == 32 ? bpb.bpbSecPerClust: rds)), 621223945Sae (lsn * 100) / (dir + 622223945Sae (fat == 32 ? bpb.bpbSecPerClust: rds))); 623223945Sae got_siginfo = 0; 624223945Sae } 62537446Srnordier x = lsn; 62637446Srnordier if (opt_B && 627203869Skib fat == 32 && bpb.bpbBackup != MAXU16 && 628203869Skib bss <= bpb.bpbBackup && x >= bpb.bpbBackup) { 629203869Skib x -= bpb.bpbBackup; 630185587Sluigi if (!x && lseek(fd1, opt_ofs, SEEK_SET)) 63137446Srnordier err(1, "%s", bname); 63237446Srnordier } 63337446Srnordier if (opt_B && x < bss) { 634203869Skib if ((n = read(fd1, img, bpb.bpbBytesPerSec)) == -1) 63537446Srnordier err(1, "%s", bname); 636203869Skib if ((unsigned)n != bpb.bpbBytesPerSec) 63737446Srnordier errx(1, "%s: can't read sector %u", bname, x); 63837446Srnordier } else 639203869Skib memset(img, 0, bpb.bpbBytesPerSec); 64037446Srnordier if (!lsn || 641203869Skib (fat == 32 && bpb.bpbBackup != MAXU16 && lsn == bpb.bpbBackup)) { 64237446Srnordier x1 = sizeof(struct bs); 64337446Srnordier bsbpb = (struct bsbpb *)(img + x1); 644203869Skib mk2(bsbpb->bpbBytesPerSec, bpb.bpbBytesPerSec); 645203869Skib mk1(bsbpb->bpbSecPerClust, bpb.bpbSecPerClust); 646203869Skib mk2(bsbpb->bpbResSectors, bpb.bpbResSectors); 647203869Skib mk1(bsbpb->bpbFATs, bpb.bpbFATs); 648203869Skib mk2(bsbpb->bpbRootDirEnts, bpb.bpbRootDirEnts); 649203869Skib mk2(bsbpb->bpbSectors, bpb.bpbSectors); 650203869Skib mk1(bsbpb->bpbMedia, bpb.bpbMedia); 651203869Skib mk2(bsbpb->bpbFATsecs, bpb.bpbFATsecs); 652203869Skib mk2(bsbpb->bpbSecPerTrack, bpb.bpbSecPerTrack); 653203869Skib mk2(bsbpb->bpbHeads, bpb.bpbHeads); 654203869Skib mk4(bsbpb->bpbHiddenSecs, bpb.bpbHiddenSecs); 655203869Skib mk4(bsbpb->bpbHugeSectors, bpb.bpbHugeSectors); 65637446Srnordier x1 += sizeof(struct bsbpb); 65737446Srnordier if (fat == 32) { 65837446Srnordier bsxbpb = (struct bsxbpb *)(img + x1); 659203869Skib mk4(bsxbpb->bpbBigFATsecs, bpb.bpbBigFATsecs); 660203869Skib mk2(bsxbpb->bpbExtFlags, 0); 661203869Skib mk2(bsxbpb->bpbFSVers, 0); 662203869Skib mk4(bsxbpb->bpbRootClust, bpb.bpbRootClust); 663203869Skib mk2(bsxbpb->bpbFSInfo, bpb.bpbFSInfo); 664203869Skib mk2(bsxbpb->bpbBackup, bpb.bpbBackup); 66537446Srnordier x1 += sizeof(struct bsxbpb); 66637446Srnordier } 66737446Srnordier bsx = (struct bsx *)(img + x1); 668203869Skib mk1(bsx->exBootSignature, 0x29); 66937446Srnordier if (Iflag) 67037446Srnordier x = opt_I; 67137446Srnordier else 67237446Srnordier x = (((u_int)(1 + tm->tm_mon) << 8 | 67337446Srnordier (u_int)tm->tm_mday) + 67437446Srnordier ((u_int)tm->tm_sec << 8 | 67537446Srnordier (u_int)(tv.tv_usec / 10))) << 16 | 67637446Srnordier ((u_int)(1900 + tm->tm_year) + 67737446Srnordier ((u_int)tm->tm_hour << 8 | 67837446Srnordier (u_int)tm->tm_min)); 679203869Skib mk4(bsx->exVolumeID, x); 680203869Skib mklabel(bsx->exVolumeLabel, opt_L ? opt_L : "NO_NAME"); 68137446Srnordier sprintf(buf, "FAT%u", fat); 682203869Skib setstr(bsx->exFileSysType, buf, sizeof(bsx->exFileSysType)); 68337446Srnordier if (!opt_B) { 68437446Srnordier x1 += sizeof(struct bsx); 68537446Srnordier bs = (struct bs *)img; 686203869Skib mk1(bs->bsJump[0], 0xeb); 687203869Skib mk1(bs->bsJump[1], x1 - 2); 688203869Skib mk1(bs->bsJump[2], 0x90); 689203869Skib setstr(bs->bsOemName, opt_O ? opt_O : "BSD4.4 ", 690203869Skib sizeof(bs->bsOemName)); 69137446Srnordier memcpy(img + x1, bootcode, sizeof(bootcode)); 692170166Strhodes mk2(img + MINBPS - 2, DOSMAGIC); 69337446Srnordier } 694203869Skib } else if (fat == 32 && bpb.bpbFSInfo != MAXU16 && 695203869Skib (lsn == bpb.bpbFSInfo || 696203869Skib (bpb.bpbBackup != MAXU16 && 697203869Skib lsn == bpb.bpbBackup + bpb.bpbFSInfo))) { 69837446Srnordier mk4(img, 0x41615252); 699170166Strhodes mk4(img + MINBPS - 28, 0x61417272); 700170166Strhodes mk4(img + MINBPS - 24, 0xffffffff); 701203869Skib mk4(img + MINBPS - 20, bpb.bpbRootClust); 702170166Strhodes mk2(img + MINBPS - 2, DOSMAGIC); 703203869Skib } else if (lsn >= bpb.bpbResSectors && lsn < dir && 704203869Skib !((lsn - bpb.bpbResSectors) % 705203869Skib (bpb.bpbFATsecs ? bpb.bpbFATsecs : bpb.bpbBigFATsecs))) { 706203869Skib mk1(img[0], bpb.bpbMedia); 70737446Srnordier for (x = 1; x < fat * (fat == 32 ? 3 : 2) / 8; x++) 70837446Srnordier mk1(img[x], fat == 32 && x % 4 == 3 ? 0x0f : 0xff); 70937446Srnordier } else if (lsn == dir && opt_L) { 71037759Srnordier de = (struct de *)img; 711203869Skib mklabel(de->deName, opt_L); 712203869Skib mk1(de->deAttributes, 050); 71337446Srnordier x = (u_int)tm->tm_hour << 11 | 71437446Srnordier (u_int)tm->tm_min << 5 | 71537446Srnordier (u_int)tm->tm_sec >> 1; 716203869Skib mk2(de->deMTime, x); 71737446Srnordier x = (u_int)(tm->tm_year - 80) << 9 | 71837446Srnordier (u_int)(tm->tm_mon + 1) << 5 | 71937446Srnordier (u_int)tm->tm_mday; 720203869Skib mk2(de->deMDate, x); 72137446Srnordier } 722203869Skib if ((n = write(fd, img, bpb.bpbBytesPerSec)) == -1) 72337446Srnordier err(1, "%s", fname); 724203869Skib if ((unsigned)n != bpb.bpbBytesPerSec) 72537446Srnordier errx(1, "%s: can't write sector %u", fname, lsn); 72637446Srnordier } 72737446Srnordier } 72837446Srnordier return 0; 72937446Srnordier} 73037446Srnordier 73137446Srnordier/* 732102231Strhodes * Exit with error if file system is mounted. 73337446Srnordier */ 73437446Srnordierstatic void 73537446Srnordiercheck_mounted(const char *fname, mode_t mode) 73637446Srnordier{ 73737446Srnordier struct statfs *mp; 73837446Srnordier const char *s1, *s2; 73937446Srnordier size_t len; 74037446Srnordier int n, r; 74137446Srnordier 74237446Srnordier if (!(n = getmntinfo(&mp, MNT_NOWAIT))) 74337446Srnordier err(1, "getmntinfo"); 74437446Srnordier len = strlen(_PATH_DEV); 74537446Srnordier s1 = fname; 74637446Srnordier if (!strncmp(s1, _PATH_DEV, len)) 74737446Srnordier s1 += len; 74837446Srnordier r = S_ISCHR(mode) && s1 != fname && *s1 == 'r'; 74937446Srnordier for (; n--; mp++) { 75037446Srnordier s2 = mp->f_mntfromname; 75137446Srnordier if (!strncmp(s2, _PATH_DEV, len)) 75237446Srnordier s2 += len; 75337446Srnordier if ((r && s2 != mp->f_mntfromname && !strcmp(s1 + 1, s2)) || 75437446Srnordier !strcmp(s1, s2)) 75537446Srnordier errx(1, "%s is mounted on %s", fname, mp->f_mntonname); 75637446Srnordier } 75737446Srnordier} 75837446Srnordier 75937446Srnordier/* 76037446Srnordier * Get a standard format. 76137446Srnordier */ 76237446Srnordierstatic void 76337446Srnordiergetstdfmt(const char *fmt, struct bpb *bpb) 76437446Srnordier{ 76537446Srnordier u_int x, i; 76637446Srnordier 76737446Srnordier x = sizeof(stdfmt) / sizeof(stdfmt[0]); 76837446Srnordier for (i = 0; i < x && strcmp(fmt, stdfmt[i].name); i++); 76937446Srnordier if (i == x) 77037446Srnordier errx(1, "%s: unknown standard format", fmt); 77137446Srnordier *bpb = stdfmt[i].bpb; 77237446Srnordier} 77337446Srnordier 77437446Srnordier/* 77537446Srnordier * Get disk slice, partition, and geometry information. 77637446Srnordier */ 77737446Srnordierstatic void 778140384Sdelphijgetdiskinfo(int fd, const char *fname, const char *dtype, __unused int oflag, 77937446Srnordier struct bpb *bpb) 78037446Srnordier{ 781106372Sscottl struct disklabel *lp, dlp; 782106372Sscottl struct fd_type type; 783140384Sdelphij off_t ms, hs = 0; 78437446Srnordier 785106372Sscottl lp = NULL; 786106372Sscottl 787106372Sscottl /* If the user specified a disk type, try to use that */ 788106372Sscottl if (dtype != NULL) { 789106372Sscottl lp = getdiskbyname(dtype); 79037446Srnordier } 791106372Sscottl 792106372Sscottl /* Maybe it's a floppy drive */ 793106372Sscottl if (lp == NULL) { 794185345Sluigi if (ioctl(fd, DIOCGMEDIASIZE, &ms) == -1) { 795185345Sluigi struct stat st; 796185345Sluigi 797185345Sluigi if (fstat(fd, &st)) 798185345Sluigi err(1, "Cannot get disk size"); 799185345Sluigi /* create a fake geometry for a file image */ 800185345Sluigi ms = st.st_size; 801185345Sluigi dlp.d_secsize = 512; 802185587Sluigi dlp.d_nsectors = 63; 803185587Sluigi dlp.d_ntracks = 255; 804185345Sluigi dlp.d_secperunit = ms / dlp.d_secsize; 805185345Sluigi lp = &dlp; 806185345Sluigi } else if (ioctl(fd, FD_GTYPE, &type) != -1) { 807106372Sscottl dlp.d_secsize = 128 << type.secsize; 808106372Sscottl dlp.d_nsectors = type.sectrac; 809106372Sscottl dlp.d_ntracks = type.heads; 810106372Sscottl dlp.d_secperunit = ms / dlp.d_secsize; 811106372Sscottl lp = &dlp; 81237446Srnordier } 81337446Srnordier } 814106372Sscottl 815106372Sscottl /* Maybe it's a fixed drive */ 816106372Sscottl if (lp == NULL) { 817203869Skib if (bpb->bpbBytesPerSec) 818203869Skib dlp.d_secsize = bpb->bpbBytesPerSec; 819106372Sscottl if (ioctl(fd, DIOCGDINFO, &dlp) == -1) { 820203869Skib if (bpb->bpbBytesPerSec == 0 && ioctl(fd, DIOCGSECTORSIZE, &dlp.d_secsize) == -1) 821125916Stjr errx(1, "Cannot get sector size, %s", strerror(errno)); 822189112Savg 823106372Sscottl dlp.d_secperunit = ms / dlp.d_secsize; 824189112Savg 825203869Skib if (bpb->bpbSecPerTrack == 0 && ioctl(fd, DIOCGFWSECTORS, &dlp.d_nsectors) == -1) { 826189112Savg warnx("Cannot get number of sectors per track, %s", strerror(errno)); 827189112Savg dlp.d_nsectors = 63; 828189112Savg } 829203869Skib if (bpb->bpbHeads == 0 && ioctl(fd, DIOCGFWHEADS, &dlp.d_ntracks) == -1) { 830189112Savg warnx("Cannot get number of heads, %s", strerror(errno)); 831189112Savg if (dlp.d_secperunit <= 63*1*1024) 832189112Savg dlp.d_ntracks = 1; 833189112Savg else if (dlp.d_secperunit <= 63*16*1024) 834189112Savg dlp.d_ntracks = 16; 835189112Savg else 836189112Savg dlp.d_ntracks = 255; 837189112Savg } 83837446Srnordier } 839106372Sscottl 840106372Sscottl hs = (ms / dlp.d_secsize) - dlp.d_secperunit; 841106372Sscottl lp = &dlp; 84237446Srnordier } 843106372Sscottl 844203869Skib if (bpb->bpbBytesPerSec == 0) 845203869Skib bpb->bpbBytesPerSec = ckgeom(fname, lp->d_secsize, "bytes/sector"); 846203869Skib if (bpb->bpbSecPerTrack == 0) 847203869Skib bpb->bpbSecPerTrack = ckgeom(fname, lp->d_nsectors, "sectors/track"); 848203869Skib if (bpb->bpbHeads == 0) 849203869Skib bpb->bpbHeads = ckgeom(fname, lp->d_ntracks, "drive heads"); 850203869Skib if (bpb->bpbHugeSectors == 0) 851203869Skib bpb->bpbHugeSectors = lp->d_secperunit; 852203869Skib if (bpb->bpbHiddenSecs == 0) 853203869Skib bpb->bpbHiddenSecs = hs; 85437446Srnordier} 85537446Srnordier 85637446Srnordier/* 85737446Srnordier * Print out BPB values. 85837446Srnordier */ 85937446Srnordierstatic void 86037446Srnordierprint_bpb(struct bpb *bpb) 86137446Srnordier{ 862203869Skib printf("BytesPerSec=%u SecPerClust=%u ResSectors=%u FATs=%u", bpb->bpbBytesPerSec, bpb->bpbSecPerClust, bpb->bpbResSectors, 863203869Skib bpb->bpbFATs); 864203869Skib if (bpb->bpbRootDirEnts) 865203869Skib printf(" RootDirEnts=%u", bpb->bpbRootDirEnts); 866203869Skib if (bpb->bpbSectors) 867203869Skib printf(" Sectors=%u", bpb->bpbSectors); 868203869Skib printf(" Media=%#x", bpb->bpbMedia); 869203869Skib if (bpb->bpbFATsecs) 870203869Skib printf(" FATsecs=%u", bpb->bpbFATsecs); 871203869Skib printf(" SecPerTrack=%u Heads=%u HiddenSecs=%u", bpb->bpbSecPerTrack, bpb->bpbHeads, bpb->bpbHiddenSecs); 872203869Skib if (bpb->bpbHugeSectors) 873203869Skib printf(" HugeSectors=%u", bpb->bpbHugeSectors); 874203869Skib if (!bpb->bpbFATsecs) { 875203869Skib printf(" FATsecs=%u RootCluster=%u", bpb->bpbBigFATsecs, bpb->bpbRootClust); 876203869Skib printf(" FSInfo="); 877203869Skib printf(bpb->bpbFSInfo == MAXU16 ? "%#x" : "%u", bpb->bpbFSInfo); 878203869Skib printf(" Backup="); 879203869Skib printf(bpb->bpbBackup == MAXU16 ? "%#x" : "%u", bpb->bpbBackup); 88037446Srnordier } 88137446Srnordier printf("\n"); 88237446Srnordier} 88337446Srnordier 88437446Srnordier/* 88537446Srnordier * Check a disk geometry value. 88637446Srnordier */ 88737446Srnordierstatic u_int 88837446Srnordierckgeom(const char *fname, u_int val, const char *msg) 88937446Srnordier{ 89037446Srnordier if (!val) 89137446Srnordier errx(1, "%s: no default %s", fname, msg); 89237446Srnordier if (val > MAXU16) 893106372Sscottl errx(1, "%s: illegal %s %d", fname, msg, val); 89437446Srnordier return val; 89537446Srnordier} 89637446Srnordier 89737446Srnordier/* 89837446Srnordier * Convert and check a numeric option argument. 89937446Srnordier */ 90037446Srnordierstatic u_int 90137446Srnordierargtou(const char *arg, u_int lo, u_int hi, const char *msg) 90237446Srnordier{ 90337446Srnordier char *s; 90437446Srnordier u_long x; 90537446Srnordier 90637446Srnordier errno = 0; 90737446Srnordier x = strtoul(arg, &s, 0); 90837446Srnordier if (errno || !*arg || *s || x < lo || x > hi) 90937446Srnordier errx(1, "%s: bad %s", arg, msg); 91037446Srnordier return x; 91137446Srnordier} 91237446Srnordier 91337446Srnordier/* 914185587Sluigi * Same for off_t, with optional skmgpP suffix 915185587Sluigi */ 916185587Sluigistatic off_t 917185587Sluigiargtooff(const char *arg, const char *msg) 918185587Sluigi{ 919185587Sluigi char *s; 920185587Sluigi off_t x; 921185587Sluigi 922185587Sluigi x = strtoll(arg, &s, 0); 923185587Sluigi /* allow at most one extra char */ 924185587Sluigi if (errno || x < 0 || (s[0] && s[1]) ) 925185587Sluigi errx(1, "%s: bad %s", arg, msg); 926185587Sluigi if (*s) { /* the extra char is the multiplier */ 927185587Sluigi switch (*s) { 928185587Sluigi default: 929185587Sluigi errx(1, "%s: bad %s", arg, msg); 930185587Sluigi /* notreached */ 931185587Sluigi 932185587Sluigi case 's': /* sector */ 933185587Sluigi case 'S': 934185587Sluigi x <<= 9; /* times 512 */ 935185587Sluigi break; 936185587Sluigi 937185587Sluigi case 'k': /* kilobyte */ 938185587Sluigi case 'K': 939185587Sluigi x <<= 10; /* times 1024 */ 940185587Sluigi break; 941185587Sluigi 942185587Sluigi case 'm': /* megabyte */ 943185587Sluigi case 'M': 944185587Sluigi x <<= 20; /* times 1024*1024 */ 945185587Sluigi break; 946185587Sluigi 947185587Sluigi case 'g': /* gigabyte */ 948185587Sluigi case 'G': 949185587Sluigi x <<= 30; /* times 1024*1024*1024 */ 950185587Sluigi break; 951185587Sluigi 952185587Sluigi case 'p': /* partition start */ 953185587Sluigi case 'P': /* partition start */ 954185587Sluigi case 'l': /* partition length */ 955185587Sluigi case 'L': /* partition length */ 956185587Sluigi errx(1, "%s: not supported yet %s", arg, msg); 957185587Sluigi /* notreached */ 958185587Sluigi } 959185587Sluigi } 960185587Sluigi return x; 961185587Sluigi} 962185587Sluigi 963185587Sluigi/* 96437446Srnordier * Check a volume label. 96537446Srnordier */ 96637446Srnordierstatic int 96737446Srnordieroklabel(const char *src) 96837446Srnordier{ 96937446Srnordier int c, i; 97037446Srnordier 97137446Srnordier for (i = 0; i <= 11; i++) { 97237446Srnordier c = (u_char)*src++; 97337446Srnordier if (c < ' ' + !i || strchr("\"*+,./:;<=>?[\\]|", c)) 97437446Srnordier break; 97537446Srnordier } 97637446Srnordier return i && !c; 97737446Srnordier} 97837446Srnordier 97937446Srnordier/* 98037446Srnordier * Make a volume label. 98137446Srnordier */ 98237446Srnordierstatic void 98337446Srnordiermklabel(u_int8_t *dest, const char *src) 98437446Srnordier{ 98537446Srnordier int c, i; 98637446Srnordier 98737446Srnordier for (i = 0; i < 11; i++) { 98837446Srnordier c = *src ? toupper(*src++) : ' '; 98937446Srnordier *dest++ = !i && c == '\xe5' ? 5 : c; 99037446Srnordier } 99137446Srnordier} 99237446Srnordier 99337446Srnordier/* 99437446Srnordier * Copy string, padding with spaces. 99537446Srnordier */ 99637446Srnordierstatic void 99737446Srnordiersetstr(u_int8_t *dest, const char *src, size_t len) 99837446Srnordier{ 99937446Srnordier while (len--) 100037446Srnordier *dest++ = *src ? *src++ : ' '; 100137446Srnordier} 100237446Srnordier 100337446Srnordier/* 100437446Srnordier * Print usage message. 100537446Srnordier */ 100637446Srnordierstatic void 100737446Srnordierusage(void) 100837446Srnordier{ 1009190924Sed fprintf(stderr, 1010190924Sed "usage: newfs_msdos [ -options ] special [disktype]\n" 1011190924Sed "where the options are:\n" 1012190925Sed "\t-@ create file system at specified offset\n" 1013190924Sed "\t-B get bootstrap from file\n" 1014190925Sed "\t-C create image file with specified size\n" 1015190924Sed "\t-F FAT type (12, 16, or 32)\n" 1016190924Sed "\t-I volume ID\n" 1017190924Sed "\t-L volume label\n" 1018190924Sed "\t-N don't create file system: just print out parameters\n" 1019190924Sed "\t-O OEM string\n" 1020190924Sed "\t-S bytes/sector\n" 1021190924Sed "\t-a sectors/FAT\n" 1022190924Sed "\t-b block size\n" 1023190924Sed "\t-c sectors/cluster\n" 1024190924Sed "\t-e root directory entries\n" 1025190924Sed "\t-f standard format\n" 1026190924Sed "\t-h drive heads\n" 1027190924Sed "\t-i file system info sector\n" 1028190924Sed "\t-k backup boot sector\n" 1029190924Sed "\t-m media descriptor\n" 1030190924Sed "\t-n number of FATs\n" 1031190924Sed "\t-o hidden sectors\n" 1032190924Sed "\t-r reserved sectors\n" 1033190924Sed "\t-s file system size (sectors)\n" 1034190924Sed "\t-u sectors/track\n"); 1035190924Sed exit(1); 103637446Srnordier} 1037223945Sae 1038223945Saestatic void 1039223945Saeinfohandler(int sig __unused) 1040223945Sae{ 1041223945Sae 1042223945Sae got_siginfo = 1; 1043223945Sae} 1044