newfs_msdos.c revision 190932
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 190932 2009-04-11 14:56:29Z ed $"; 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> 4737446Srnordier#include <stdio.h> 4837446Srnordier#include <stdlib.h> 4937446Srnordier#include <string.h> 5066907Swollman#include <time.h> 5137446Srnordier#include <unistd.h> 5237446Srnordier 5337446Srnordier#define MAXU16 0xffff /* maximum unsigned 16-bit quantity */ 5437446Srnordier#define BPN 4 /* bits per nibble */ 5537446Srnordier#define NPB 2 /* nibbles per byte */ 5637446Srnordier 5737446Srnordier#define DOSMAGIC 0xaa55 /* DOS magic number */ 58170166Strhodes#define MINBPS 512 /* minimum bytes per sector */ 5937446Srnordier#define MAXSPC 128 /* maximum sectors per cluster */ 6037446Srnordier#define MAXNFT 16 /* maximum number of FATs */ 6137446Srnordier#define DEFBLK 4096 /* default block size */ 6237446Srnordier#define DEFBLK16 2048 /* default block size FAT16 */ 6337446Srnordier#define DEFRDE 512 /* default root directory entries */ 6437446Srnordier#define RESFTE 2 /* reserved FAT entries */ 6537446Srnordier#define MINCLS12 1 /* minimum FAT12 clusters */ 6637446Srnordier#define MINCLS16 0x1000 /* minimum FAT16 clusters */ 6737446Srnordier#define MINCLS32 2 /* minimum FAT32 clusters */ 6837446Srnordier#define MAXCLS12 0xfed /* maximum FAT12 clusters */ 6937446Srnordier#define MAXCLS16 0xfff5 /* maximum FAT16 clusters */ 7037446Srnordier#define MAXCLS32 0xffffff5 /* maximum FAT32 clusters */ 7137446Srnordier 7237446Srnordier#define mincls(fat) ((fat) == 12 ? MINCLS12 : \ 7337446Srnordier (fat) == 16 ? MINCLS16 : \ 7437446Srnordier MINCLS32) 7537446Srnordier 7637446Srnordier#define maxcls(fat) ((fat) == 12 ? MAXCLS12 : \ 7737446Srnordier (fat) == 16 ? MAXCLS16 : \ 7837446Srnordier MAXCLS32) 7937446Srnordier 8037446Srnordier#define mk1(p, x) \ 8137446Srnordier (p) = (u_int8_t)(x) 8237446Srnordier 8337446Srnordier#define mk2(p, x) \ 8437446Srnordier (p)[0] = (u_int8_t)(x), \ 8537446Srnordier (p)[1] = (u_int8_t)((x) >> 010) 8637446Srnordier 8737446Srnordier#define mk4(p, x) \ 8837446Srnordier (p)[0] = (u_int8_t)(x), \ 8937446Srnordier (p)[1] = (u_int8_t)((x) >> 010), \ 9037446Srnordier (p)[2] = (u_int8_t)((x) >> 020), \ 9137446Srnordier (p)[3] = (u_int8_t)((x) >> 030) 9237446Srnordier 9337446Srnordier#define argto1(arg, lo, msg) argtou(arg, lo, 0xff, msg) 9437446Srnordier#define argto2(arg, lo, msg) argtou(arg, lo, 0xffff, msg) 9537446Srnordier#define argto4(arg, lo, msg) argtou(arg, lo, 0xffffffff, msg) 9637446Srnordier#define argtox(arg, lo, msg) argtou(arg, lo, UINT_MAX, msg) 9737446Srnordier 9837446Srnordierstruct bs { 9937446Srnordier u_int8_t jmp[3]; /* bootstrap entry point */ 10037446Srnordier u_int8_t oem[8]; /* OEM name and version */ 10137446Srnordier}; 10237446Srnordier 10337446Srnordierstruct bsbpb { 10437446Srnordier u_int8_t bps[2]; /* bytes per sector */ 10537446Srnordier u_int8_t spc; /* sectors per cluster */ 10637446Srnordier u_int8_t res[2]; /* reserved sectors */ 10737446Srnordier u_int8_t nft; /* number of FATs */ 10837446Srnordier u_int8_t rde[2]; /* root directory entries */ 10937446Srnordier u_int8_t sec[2]; /* total sectors */ 11037446Srnordier u_int8_t mid; /* media descriptor */ 11137446Srnordier u_int8_t spf[2]; /* sectors per FAT */ 11237446Srnordier u_int8_t spt[2]; /* sectors per track */ 11337446Srnordier u_int8_t hds[2]; /* drive heads */ 11437446Srnordier u_int8_t hid[4]; /* hidden sectors */ 11537446Srnordier u_int8_t bsec[4]; /* big total sectors */ 11637446Srnordier}; 11737446Srnordier 11837446Srnordierstruct bsxbpb { 11937446Srnordier u_int8_t bspf[4]; /* big sectors per FAT */ 12037446Srnordier u_int8_t xflg[2]; /* FAT control flags */ 121102231Strhodes u_int8_t vers[2]; /* file system version */ 12237446Srnordier u_int8_t rdcl[4]; /* root directory start cluster */ 123102231Strhodes u_int8_t infs[2]; /* file system info sector */ 12437446Srnordier u_int8_t bkbs[2]; /* backup boot sector */ 12537446Srnordier u_int8_t rsvd[12]; /* reserved */ 12637446Srnordier}; 12737446Srnordier 12837446Srnordierstruct bsx { 12937446Srnordier u_int8_t drv; /* drive number */ 13037446Srnordier u_int8_t rsvd; /* reserved */ 13137446Srnordier u_int8_t sig; /* extended boot signature */ 13237446Srnordier u_int8_t volid[4]; /* volume ID number */ 13337446Srnordier u_int8_t label[11]; /* volume label */ 134102231Strhodes u_int8_t type[8]; /* file system type */ 13537446Srnordier}; 13637446Srnordier 13737446Srnordierstruct de { 13837446Srnordier u_int8_t namext[11]; /* name and extension */ 13937446Srnordier u_int8_t attr; /* attributes */ 14037446Srnordier u_int8_t rsvd[10]; /* reserved */ 14137446Srnordier u_int8_t time[2]; /* creation time */ 14237446Srnordier u_int8_t date[2]; /* creation date */ 14337446Srnordier u_int8_t clus[2]; /* starting cluster */ 14437446Srnordier u_int8_t size[4]; /* size */ 14537446Srnordier}; 14637446Srnordier 14737446Srnordierstruct bpb { 14837446Srnordier u_int bps; /* bytes per sector */ 14937446Srnordier u_int spc; /* sectors per cluster */ 15037446Srnordier u_int res; /* reserved sectors */ 15137446Srnordier u_int nft; /* number of FATs */ 15237446Srnordier u_int rde; /* root directory entries */ 15337446Srnordier u_int sec; /* total sectors */ 15437446Srnordier u_int mid; /* media descriptor */ 15537446Srnordier u_int spf; /* sectors per FAT */ 15637446Srnordier u_int spt; /* sectors per track */ 15737446Srnordier u_int hds; /* drive heads */ 15837446Srnordier u_int hid; /* hidden sectors */ 15937446Srnordier u_int bsec; /* big total sectors */ 16037446Srnordier u_int bspf; /* big sectors per FAT */ 16137446Srnordier u_int rdcl; /* root directory start cluster */ 162102231Strhodes u_int infs; /* file system info sector */ 16337446Srnordier u_int bkbs; /* backup boot sector */ 16437446Srnordier}; 16537446Srnordier 166140384Sdelphij#define BPBGAP 0, 0, 0, 0, 0, 0 167140384Sdelphij 16837446Srnordierstatic struct { 16937446Srnordier const char *name; 17037446Srnordier struct bpb bpb; 171190927Sed} const stdfmt[] = { 172140384Sdelphij {"160", {512, 1, 1, 2, 64, 320, 0xfe, 1, 8, 1, BPBGAP}}, 173140384Sdelphij {"180", {512, 1, 1, 2, 64, 360, 0xfc, 2, 9, 1, BPBGAP}}, 174140384Sdelphij {"320", {512, 2, 1, 2, 112, 640, 0xff, 1, 8, 2, BPBGAP}}, 175140384Sdelphij {"360", {512, 2, 1, 2, 112, 720, 0xfd, 2, 9, 2, BPBGAP}}, 176140384Sdelphij {"640", {512, 2, 1, 2, 112, 1280, 0xfb, 2, 8, 2, BPBGAP}}, 177140384Sdelphij {"720", {512, 2, 1, 2, 112, 1440, 0xf9, 3, 9, 2, BPBGAP}}, 178140384Sdelphij {"1200", {512, 1, 1, 2, 224, 2400, 0xf9, 7, 15, 2, BPBGAP}}, 179140384Sdelphij {"1232", {1024,1, 1, 2, 192, 1232, 0xfe, 2, 8, 2, BPBGAP}}, 180140384Sdelphij {"1440", {512, 1, 1, 2, 224, 2880, 0xf0, 9, 18, 2, BPBGAP}}, 181140384Sdelphij {"2880", {512, 2, 1, 2, 240, 5760, 0xf0, 9, 36, 2, BPBGAP}} 18237446Srnordier}; 18337446Srnordier 184190927Sedstatic const u_int8_t bootcode[] = { 18537446Srnordier 0xfa, /* cli */ 18637446Srnordier 0x31, 0xc0, /* xor ax,ax */ 18737446Srnordier 0x8e, 0xd0, /* mov ss,ax */ 18837446Srnordier 0xbc, 0x00, 0x7c, /* mov sp,7c00h */ 18937446Srnordier 0xfb, /* sti */ 19037446Srnordier 0x8e, 0xd8, /* mov ds,ax */ 19137446Srnordier 0xe8, 0x00, 0x00, /* call $ + 3 */ 19237446Srnordier 0x5e, /* pop si */ 19337446Srnordier 0x83, 0xc6, 0x19, /* add si,+19h */ 19437446Srnordier 0xbb, 0x07, 0x00, /* mov bx,0007h */ 19537446Srnordier 0xfc, /* cld */ 19637446Srnordier 0xac, /* lodsb */ 19737446Srnordier 0x84, 0xc0, /* test al,al */ 19837446Srnordier 0x74, 0x06, /* jz $ + 8 */ 19937446Srnordier 0xb4, 0x0e, /* mov ah,0eh */ 20037446Srnordier 0xcd, 0x10, /* int 10h */ 20137446Srnordier 0xeb, 0xf5, /* jmp $ - 9 */ 20237446Srnordier 0x30, 0xe4, /* xor ah,ah */ 20337446Srnordier 0xcd, 0x16, /* int 16h */ 20437446Srnordier 0xcd, 0x19, /* int 19h */ 20537446Srnordier 0x0d, 0x0a, 20637446Srnordier 'N', 'o', 'n', '-', 's', 'y', 's', 't', 20737446Srnordier 'e', 'm', ' ', 'd', 'i', 's', 'k', 20837446Srnordier 0x0d, 0x0a, 20937446Srnordier 'P', 'r', 'e', 's', 's', ' ', 'a', 'n', 21037446Srnordier 'y', ' ', 'k', 'e', 'y', ' ', 't', 'o', 21137446Srnordier ' ', 'r', 'e', 'b', 'o', 'o', 't', 21237446Srnordier 0x0d, 0x0a, 21337446Srnordier 0 21437446Srnordier}; 21537446Srnordier 21637446Srnordierstatic void check_mounted(const char *, mode_t); 21737446Srnordierstatic void getstdfmt(const char *, struct bpb *); 21837446Srnordierstatic void getdiskinfo(int, const char *, const char *, int, 21937446Srnordier struct bpb *); 22037446Srnordierstatic void print_bpb(struct bpb *); 22137446Srnordierstatic u_int ckgeom(const char *, u_int, const char *); 22237446Srnordierstatic u_int argtou(const char *, u_int, u_int, const char *); 223185587Sluigistatic off_t argtooff(const char *, const char *); 22437446Srnordierstatic int oklabel(const char *); 22537446Srnordierstatic void mklabel(u_int8_t *, const char *); 22637446Srnordierstatic void setstr(u_int8_t *, const char *, size_t); 22737446Srnordierstatic void usage(void); 22837446Srnordier 22937446Srnordier/* 230102231Strhodes * Construct a FAT12, FAT16, or FAT32 file system. 23137446Srnordier */ 23237446Srnordierint 23337446Srnordiermain(int argc, char *argv[]) 23437446Srnordier{ 235190927Sed 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:"; 236190927Sed const char *opt_B = NULL, *opt_L = NULL, *opt_O = NULL, *opt_f = NULL; 237190927Sed u_int opt_F = 0, opt_I = 0, opt_S = 0, opt_a = 0, opt_b = 0, opt_c = 0; 238190927Sed u_int opt_e = 0, opt_h = 0, opt_i = 0, opt_k = 0, opt_m = 0, opt_n = 0; 239190927Sed u_int opt_o = 0, opt_r = 0, opt_s = 0, opt_u = 0; 240190927Sed int opt_N = 0; 241190927Sed int Iflag = 0, mflag = 0, oflag = 0; 24237446Srnordier char buf[MAXPATHLEN]; 24337446Srnordier struct stat sb; 24437446Srnordier struct timeval tv; 24537446Srnordier struct bpb bpb; 24637446Srnordier struct tm *tm; 24737446Srnordier struct bs *bs; 24837446Srnordier struct bsbpb *bsbpb; 24937446Srnordier struct bsxbpb *bsxbpb; 25037446Srnordier struct bsx *bsx; 25137446Srnordier struct de *de; 25237446Srnordier u_int8_t *img; 25337446Srnordier const char *fname, *dtype, *bname; 25437446Srnordier ssize_t n; 25540487Sbde time_t now; 25637446Srnordier u_int fat, bss, rds, cls, dir, lsn, x, x1, x2; 25737446Srnordier int ch, fd, fd1; 258190927Sed off_t opt_create = 0, opt_ofs = 0; 25937446Srnordier 26037446Srnordier while ((ch = getopt(argc, argv, opts)) != -1) 26137446Srnordier switch (ch) { 262185587Sluigi case '@': 263185587Sluigi opt_ofs = argtooff(optarg, "offset"); 264185587Sluigi break; 26537446Srnordier case 'N': 26637446Srnordier opt_N = 1; 26737446Srnordier break; 26837446Srnordier case 'B': 26937446Srnordier opt_B = optarg; 27037446Srnordier break; 271185587Sluigi case 'C': 272185587Sluigi opt_create = argtooff(optarg, "create size"); 273185587Sluigi break; 27437446Srnordier case 'F': 27537446Srnordier if (strcmp(optarg, "12") && 27637446Srnordier strcmp(optarg, "16") && 27737446Srnordier strcmp(optarg, "32")) 27837446Srnordier errx(1, "%s: bad FAT type", optarg); 27937446Srnordier opt_F = atoi(optarg); 28037446Srnordier break; 28137446Srnordier case 'I': 28237446Srnordier opt_I = argto4(optarg, 0, "volume ID"); 28337446Srnordier Iflag = 1; 28437446Srnordier break; 28537446Srnordier case 'L': 28637446Srnordier if (!oklabel(optarg)) 28737446Srnordier errx(1, "%s: bad volume label", optarg); 28837446Srnordier opt_L = optarg; 28937446Srnordier break; 29037446Srnordier case 'O': 29137446Srnordier if (strlen(optarg) > 8) 29237446Srnordier errx(1, "%s: bad OEM string", optarg); 29337446Srnordier opt_O = optarg; 29437446Srnordier break; 29537446Srnordier case 'S': 29637446Srnordier opt_S = argto2(optarg, 1, "bytes/sector"); 29737446Srnordier break; 29837446Srnordier case 'a': 29937446Srnordier opt_a = argto4(optarg, 1, "sectors/FAT"); 30037446Srnordier break; 30137446Srnordier case 'b': 30237446Srnordier opt_b = argtox(optarg, 1, "block size"); 30337446Srnordier opt_c = 0; 30437446Srnordier break; 30537446Srnordier case 'c': 30637446Srnordier opt_c = argto1(optarg, 1, "sectors/cluster"); 30737446Srnordier opt_b = 0; 30837446Srnordier break; 30937446Srnordier case 'e': 31037446Srnordier opt_e = argto2(optarg, 1, "directory entries"); 31137446Srnordier break; 31237446Srnordier case 'f': 31337446Srnordier opt_f = optarg; 31437446Srnordier break; 31537446Srnordier case 'h': 31637446Srnordier opt_h = argto2(optarg, 1, "drive heads"); 31737446Srnordier break; 31837446Srnordier case 'i': 31937446Srnordier opt_i = argto2(optarg, 1, "info sector"); 32037446Srnordier break; 32137446Srnordier case 'k': 32237446Srnordier opt_k = argto2(optarg, 1, "backup sector"); 32337446Srnordier break; 32437446Srnordier case 'm': 32537446Srnordier opt_m = argto1(optarg, 0, "media descriptor"); 32637446Srnordier mflag = 1; 32737446Srnordier break; 32837446Srnordier case 'n': 32937446Srnordier opt_n = argto1(optarg, 1, "number of FATs"); 33037446Srnordier break; 33137446Srnordier case 'o': 33237446Srnordier opt_o = argto4(optarg, 0, "hidden sectors"); 33337446Srnordier oflag = 1; 33437446Srnordier break; 33537446Srnordier case 'r': 33637446Srnordier opt_r = argto2(optarg, 1, "reserved sectors"); 33737446Srnordier break; 33837446Srnordier case 's': 339102231Strhodes opt_s = argto4(optarg, 1, "file system size"); 34037446Srnordier break; 34137446Srnordier case 'u': 34237446Srnordier opt_u = argto2(optarg, 1, "sectors/track"); 34337446Srnordier break; 34437446Srnordier default: 34537446Srnordier usage(); 34637446Srnordier } 34737446Srnordier argc -= optind; 34837446Srnordier argv += optind; 34937446Srnordier if (argc < 1 || argc > 2) 35037446Srnordier usage(); 35137446Srnordier fname = *argv++; 352190932Sed if (!opt_create && !strchr(fname, '/')) { 35363892Sasmodai snprintf(buf, sizeof(buf), "%s%s", _PATH_DEV, fname); 35437446Srnordier if (!(fname = strdup(buf))) 35537446Srnordier err(1, NULL); 35637446Srnordier } 35737446Srnordier dtype = *argv; 358185587Sluigi if (opt_create) { 359185587Sluigi if (opt_N) 360185587Sluigi errx(1, "create (-C) is incompatible with -N"); 361185587Sluigi fd = open(fname, O_RDWR | O_CREAT | O_TRUNC, 0644); 362185587Sluigi if (fd == -1) 363185587Sluigi errx(1, "failed to create %s", fname); 364190929Sed if (ftruncate(fd, opt_create)) 365185594Smlaier errx(1, "failed to initialize %jd bytes", (intmax_t)opt_create); 366190930Sed } else if ((fd = open(fname, opt_N ? O_RDONLY : O_RDWR)) == -1) 36737446Srnordier err(1, "%s", fname); 368190930Sed if (fstat(fd, &sb)) 369190930Sed err(1, "%s", fname); 370190931Sed if (opt_create) { 371190931Sed if (!S_ISREG(sb.st_mode)) 372190931Sed warnx("warning, %s is not a regular file", fname); 373190931Sed } else { 374190931Sed if (!S_ISCHR(sb.st_mode)) 375190931Sed warnx("warning, %s is not a character device", fname); 376190931Sed } 37737446Srnordier if (!opt_N) 37837446Srnordier check_mounted(fname, sb.st_mode); 379185587Sluigi if (opt_ofs && opt_ofs != lseek(fd, opt_ofs, SEEK_SET)) 380185594Smlaier errx(1, "cannot seek to %jd", (intmax_t)opt_ofs); 38137446Srnordier memset(&bpb, 0, sizeof(bpb)); 38237446Srnordier if (opt_f) { 38337446Srnordier getstdfmt(opt_f, &bpb); 38437446Srnordier bpb.bsec = bpb.sec; 38537446Srnordier bpb.sec = 0; 38637446Srnordier bpb.bspf = bpb.spf; 38737446Srnordier bpb.spf = 0; 38837446Srnordier } 38937446Srnordier if (opt_h) 39037446Srnordier bpb.hds = opt_h; 39137446Srnordier if (opt_u) 39237446Srnordier bpb.spt = opt_u; 39337446Srnordier if (opt_S) 39437446Srnordier bpb.bps = opt_S; 39537446Srnordier if (opt_s) 39637446Srnordier bpb.bsec = opt_s; 39737446Srnordier if (oflag) 39837446Srnordier bpb.hid = opt_o; 399185587Sluigi if (!(opt_f || (opt_h && opt_u && opt_S && opt_s && oflag))) { 400185587Sluigi off_t delta; 40137446Srnordier getdiskinfo(fd, fname, dtype, oflag, &bpb); 402185587Sluigi bpb.bsec -= (opt_ofs / bpb.bps); 403185587Sluigi delta = bpb.bsec % bpb.spt; 404185587Sluigi if (delta != 0) { 405185587Sluigi warnx("trim %d sectors to adjust to a multiple of %d", 406185587Sluigi (int)delta, bpb.spt); 407185587Sluigi bpb.bsec -= delta; 408185587Sluigi } 409185587Sluigi if (bpb.spc == 0) { /* set defaults */ 410185587Sluigi if (bpb.bsec <= 6000) /* about 3MB -> 512 bytes */ 411185587Sluigi bpb.spc = 1; 412185587Sluigi else if (bpb.bsec <= (1<<17)) /* 64M -> 4k */ 413185587Sluigi bpb.spc = 8; 414185587Sluigi else if (bpb.bsec <= (1<<19)) /* 256M -> 8k */ 415185587Sluigi bpb.spc = 16; 416185587Sluigi else if (bpb.bsec <= (1<<21)) /* 1G -> 16k */ 417185587Sluigi bpb.spc = 32; 418185587Sluigi else 419185587Sluigi bpb.spc = 64; /* otherwise 32k */ 420185587Sluigi } 421185587Sluigi } 42237446Srnordier if (!powerof2(bpb.bps)) 42337446Srnordier errx(1, "bytes/sector (%u) is not a power of 2", bpb.bps); 42437446Srnordier if (bpb.bps < MINBPS) 42537446Srnordier errx(1, "bytes/sector (%u) is too small; minimum is %u", 42637446Srnordier bpb.bps, MINBPS); 42748954Sbillf if (!(fat = opt_F)) { 42837446Srnordier if (opt_f) 42937446Srnordier fat = 12; 43037446Srnordier else if (!opt_e && (opt_i || opt_k)) 43137446Srnordier fat = 32; 43248954Sbillf } 43337446Srnordier if ((fat == 32 && opt_e) || (fat != 32 && (opt_i || opt_k))) 43437446Srnordier errx(1, "-%c is not a legal FAT%s option", 43537446Srnordier fat == 32 ? 'e' : opt_i ? 'i' : 'k', 43637446Srnordier fat == 32 ? "32" : "12/16"); 43737446Srnordier if (opt_f && fat == 32) 43837446Srnordier bpb.rde = 0; 43937446Srnordier if (opt_b) { 44037446Srnordier if (!powerof2(opt_b)) 44137446Srnordier errx(1, "block size (%u) is not a power of 2", opt_b); 44237446Srnordier if (opt_b < bpb.bps) 44337446Srnordier errx(1, "block size (%u) is too small; minimum is %u", 44437446Srnordier opt_b, bpb.bps); 44537446Srnordier if (opt_b > bpb.bps * MAXSPC) 44637446Srnordier errx(1, "block size (%u) is too large; maximum is %u", 44737446Srnordier opt_b, bpb.bps * MAXSPC); 44837446Srnordier bpb.spc = opt_b / bpb.bps; 44937446Srnordier } 45037446Srnordier if (opt_c) { 45137446Srnordier if (!powerof2(opt_c)) 45237446Srnordier errx(1, "sectors/cluster (%u) is not a power of 2", opt_c); 45337446Srnordier bpb.spc = opt_c; 45437446Srnordier } 45537446Srnordier if (opt_r) 45637446Srnordier bpb.res = opt_r; 45737446Srnordier if (opt_n) { 45837446Srnordier if (opt_n > MAXNFT) 45937446Srnordier errx(1, "number of FATs (%u) is too large; maximum is %u", 46037446Srnordier opt_n, MAXNFT); 46137446Srnordier bpb.nft = opt_n; 46237446Srnordier } 46337446Srnordier if (opt_e) 46437446Srnordier bpb.rde = opt_e; 46537446Srnordier if (mflag) { 46637446Srnordier if (opt_m < 0xf0) 46741586Srnordier errx(1, "illegal media descriptor (%#x)", opt_m); 46837446Srnordier bpb.mid = opt_m; 46937446Srnordier } 47037446Srnordier if (opt_a) 47137446Srnordier bpb.bspf = opt_a; 47237446Srnordier if (opt_i) 47337446Srnordier bpb.infs = opt_i; 47437446Srnordier if (opt_k) 47537446Srnordier bpb.bkbs = opt_k; 47637446Srnordier bss = 1; 47737446Srnordier bname = NULL; 47837446Srnordier fd1 = -1; 47937446Srnordier if (opt_B) { 48037446Srnordier bname = opt_B; 48137446Srnordier if (!strchr(bname, '/')) { 48242261Sjkh snprintf(buf, sizeof(buf), "/boot/%s", bname); 48337446Srnordier if (!(bname = strdup(buf))) 48437446Srnordier err(1, NULL); 48537446Srnordier } 48637446Srnordier if ((fd1 = open(bname, O_RDONLY)) == -1 || fstat(fd1, &sb)) 48737446Srnordier err(1, "%s", bname); 48837446Srnordier if (!S_ISREG(sb.st_mode) || sb.st_size % bpb.bps || 48937446Srnordier sb.st_size < bpb.bps || sb.st_size > bpb.bps * MAXU16) 49037446Srnordier errx(1, "%s: inappropriate file type or format", bname); 49137446Srnordier bss = sb.st_size / bpb.bps; 49237446Srnordier } 49337446Srnordier if (!bpb.nft) 49437446Srnordier bpb.nft = 2; 49548954Sbillf if (!fat) { 49637446Srnordier if (bpb.bsec < (bpb.res ? bpb.res : bss) + 49737446Srnordier howmany((RESFTE + (bpb.spc ? MINCLS16 : MAXCLS12 + 1)) * 49837446Srnordier ((bpb.spc ? 16 : 12) / BPN), bpb.bps * NPB) * 49937446Srnordier bpb.nft + 50037446Srnordier howmany(bpb.rde ? bpb.rde : DEFRDE, 50137446Srnordier bpb.bps / sizeof(struct de)) + 50237446Srnordier (bpb.spc ? MINCLS16 : MAXCLS12 + 1) * 50337446Srnordier (bpb.spc ? bpb.spc : howmany(DEFBLK, bpb.bps))) 50437446Srnordier fat = 12; 50537446Srnordier else if (bpb.rde || bpb.bsec < 50637446Srnordier (bpb.res ? bpb.res : bss) + 50737446Srnordier howmany((RESFTE + MAXCLS16) * 2, bpb.bps) * bpb.nft + 50837446Srnordier howmany(DEFRDE, bpb.bps / sizeof(struct de)) + 50937446Srnordier (MAXCLS16 + 1) * 51037446Srnordier (bpb.spc ? bpb.spc : howmany(8192, bpb.bps))) 51137446Srnordier fat = 16; 51237446Srnordier else 51337446Srnordier fat = 32; 51448954Sbillf } 51537446Srnordier x = bss; 51637446Srnordier if (fat == 32) { 51737446Srnordier if (!bpb.infs) { 51837446Srnordier if (x == MAXU16 || x == bpb.bkbs) 51937446Srnordier errx(1, "no room for info sector"); 52037446Srnordier bpb.infs = x; 52137446Srnordier } 52237446Srnordier if (bpb.infs != MAXU16 && x <= bpb.infs) 52337446Srnordier x = bpb.infs + 1; 52437446Srnordier if (!bpb.bkbs) { 52537446Srnordier if (x == MAXU16) 52637446Srnordier errx(1, "no room for backup sector"); 52737446Srnordier bpb.bkbs = x; 52837446Srnordier } else if (bpb.bkbs != MAXU16 && bpb.bkbs == bpb.infs) 52937446Srnordier errx(1, "backup sector would overwrite info sector"); 53037446Srnordier if (bpb.bkbs != MAXU16 && x <= bpb.bkbs) 53137446Srnordier x = bpb.bkbs + 1; 53237446Srnordier } 53337446Srnordier if (!bpb.res) 53437446Srnordier bpb.res = fat == 32 ? MAX(x, MAX(16384 / bpb.bps, 4)) : x; 53537446Srnordier else if (bpb.res < x) 53637446Srnordier errx(1, "too few reserved sectors"); 53737446Srnordier if (fat != 32 && !bpb.rde) 53837446Srnordier bpb.rde = DEFRDE; 53937446Srnordier rds = howmany(bpb.rde, bpb.bps / sizeof(struct de)); 54037446Srnordier if (!bpb.spc) 54137446Srnordier for (bpb.spc = howmany(fat == 16 ? DEFBLK16 : DEFBLK, bpb.bps); 54237446Srnordier bpb.spc < MAXSPC && 54337446Srnordier bpb.res + 54437446Srnordier howmany((RESFTE + maxcls(fat)) * (fat / BPN), 54537446Srnordier bpb.bps * NPB) * bpb.nft + 54637446Srnordier rds + 54737446Srnordier (u_int64_t)(maxcls(fat) + 1) * bpb.spc <= bpb.bsec; 54837446Srnordier bpb.spc <<= 1); 54937446Srnordier if (fat != 32 && bpb.bspf > MAXU16) 55037446Srnordier errx(1, "too many sectors/FAT for FAT12/16"); 55137446Srnordier x1 = bpb.res + rds; 55237446Srnordier x = bpb.bspf ? bpb.bspf : 1; 55337446Srnordier if (x1 + (u_int64_t)x * bpb.nft > bpb.bsec) 554102231Strhodes errx(1, "meta data exceeds file system size"); 55537446Srnordier x1 += x * bpb.nft; 55637446Srnordier x = (u_int64_t)(bpb.bsec - x1) * bpb.bps * NPB / 55737446Srnordier (bpb.spc * bpb.bps * NPB + fat / BPN * bpb.nft); 55837446Srnordier x2 = howmany((RESFTE + MIN(x, maxcls(fat))) * (fat / BPN), 55937446Srnordier bpb.bps * NPB); 56037446Srnordier if (!bpb.bspf) { 56137446Srnordier bpb.bspf = x2; 56237446Srnordier x1 += (bpb.bspf - 1) * bpb.nft; 56337446Srnordier } 56437446Srnordier cls = (bpb.bsec - x1) / bpb.spc; 56537446Srnordier x = (u_int64_t)bpb.bspf * bpb.bps * NPB / (fat / BPN) - RESFTE; 56637446Srnordier if (cls > x) 56737446Srnordier cls = x; 56837446Srnordier if (bpb.bspf < x2) 569102231Strhodes warnx("warning: sectors/FAT limits file system to %u clusters", 57037446Srnordier cls); 57137446Srnordier if (cls < mincls(fat)) 57259215Simp errx(1, "%u clusters too few clusters for FAT%u, need %u", cls, fat, 57359215Simp mincls(fat)); 57437446Srnordier if (cls > maxcls(fat)) { 57537446Srnordier cls = maxcls(fat); 57637446Srnordier bpb.bsec = x1 + (cls + 1) * bpb.spc - 1; 577102231Strhodes warnx("warning: FAT type limits file system to %u sectors", 57837446Srnordier bpb.bsec); 57937446Srnordier } 58037446Srnordier printf("%s: %u sector%s in %u FAT%u cluster%s " 58137446Srnordier "(%u bytes/cluster)\n", fname, cls * bpb.spc, 58237446Srnordier cls * bpb.spc == 1 ? "" : "s", cls, fat, 58337446Srnordier cls == 1 ? "" : "s", bpb.bps * bpb.spc); 58437446Srnordier if (!bpb.mid) 58537446Srnordier bpb.mid = !bpb.hid ? 0xf0 : 0xf8; 58637446Srnordier if (fat == 32) 58737446Srnordier bpb.rdcl = RESFTE; 58837759Srnordier if (bpb.hid + bpb.bsec <= MAXU16) { 58937446Srnordier bpb.sec = bpb.bsec; 59037446Srnordier bpb.bsec = 0; 59137446Srnordier } 59237446Srnordier if (fat != 32) { 59337446Srnordier bpb.spf = bpb.bspf; 59437446Srnordier bpb.bspf = 0; 59537446Srnordier } 59637446Srnordier print_bpb(&bpb); 59737446Srnordier if (!opt_N) { 59837446Srnordier gettimeofday(&tv, NULL); 59940487Sbde now = tv.tv_sec; 60040487Sbde tm = localtime(&now); 60137446Srnordier if (!(img = malloc(bpb.bps))) 60237446Srnordier err(1, NULL); 60337446Srnordier dir = bpb.res + (bpb.spf ? bpb.spf : bpb.bspf) * bpb.nft; 60437446Srnordier for (lsn = 0; lsn < dir + (fat == 32 ? bpb.spc : rds); lsn++) { 60537446Srnordier x = lsn; 60637446Srnordier if (opt_B && 60737446Srnordier fat == 32 && bpb.bkbs != MAXU16 && 60837446Srnordier bss <= bpb.bkbs && x >= bpb.bkbs) { 60937446Srnordier x -= bpb.bkbs; 610185587Sluigi if (!x && lseek(fd1, opt_ofs, SEEK_SET)) 61137446Srnordier err(1, "%s", bname); 61237446Srnordier } 61337446Srnordier if (opt_B && x < bss) { 61437446Srnordier if ((n = read(fd1, img, bpb.bps)) == -1) 61537446Srnordier err(1, "%s", bname); 616140384Sdelphij if ((unsigned)n != bpb.bps) 61737446Srnordier errx(1, "%s: can't read sector %u", bname, x); 61837446Srnordier } else 61937446Srnordier memset(img, 0, bpb.bps); 62037446Srnordier if (!lsn || 62137446Srnordier (fat == 32 && bpb.bkbs != MAXU16 && lsn == bpb.bkbs)) { 62237446Srnordier x1 = sizeof(struct bs); 62337446Srnordier bsbpb = (struct bsbpb *)(img + x1); 62437446Srnordier mk2(bsbpb->bps, bpb.bps); 62537446Srnordier mk1(bsbpb->spc, bpb.spc); 62637446Srnordier mk2(bsbpb->res, bpb.res); 62737446Srnordier mk1(bsbpb->nft, bpb.nft); 62837446Srnordier mk2(bsbpb->rde, bpb.rde); 62937446Srnordier mk2(bsbpb->sec, bpb.sec); 63037446Srnordier mk1(bsbpb->mid, bpb.mid); 63137446Srnordier mk2(bsbpb->spf, bpb.spf); 63237446Srnordier mk2(bsbpb->spt, bpb.spt); 63337446Srnordier mk2(bsbpb->hds, bpb.hds); 63437446Srnordier mk4(bsbpb->hid, bpb.hid); 63537446Srnordier mk4(bsbpb->bsec, bpb.bsec); 63637446Srnordier x1 += sizeof(struct bsbpb); 63737446Srnordier if (fat == 32) { 63837446Srnordier bsxbpb = (struct bsxbpb *)(img + x1); 63937446Srnordier mk4(bsxbpb->bspf, bpb.bspf); 64037446Srnordier mk2(bsxbpb->xflg, 0); 64137446Srnordier mk2(bsxbpb->vers, 0); 64237446Srnordier mk4(bsxbpb->rdcl, bpb.rdcl); 64337446Srnordier mk2(bsxbpb->infs, bpb.infs); 64437446Srnordier mk2(bsxbpb->bkbs, bpb.bkbs); 64537446Srnordier x1 += sizeof(struct bsxbpb); 64637446Srnordier } 64737446Srnordier bsx = (struct bsx *)(img + x1); 64837446Srnordier mk1(bsx->sig, 0x29); 64937446Srnordier if (Iflag) 65037446Srnordier x = opt_I; 65137446Srnordier else 65237446Srnordier x = (((u_int)(1 + tm->tm_mon) << 8 | 65337446Srnordier (u_int)tm->tm_mday) + 65437446Srnordier ((u_int)tm->tm_sec << 8 | 65537446Srnordier (u_int)(tv.tv_usec / 10))) << 16 | 65637446Srnordier ((u_int)(1900 + tm->tm_year) + 65737446Srnordier ((u_int)tm->tm_hour << 8 | 65837446Srnordier (u_int)tm->tm_min)); 65937446Srnordier mk4(bsx->volid, x); 66037446Srnordier mklabel(bsx->label, opt_L ? opt_L : "NO NAME"); 66137446Srnordier sprintf(buf, "FAT%u", fat); 66237446Srnordier setstr(bsx->type, buf, sizeof(bsx->type)); 66337446Srnordier if (!opt_B) { 66437446Srnordier x1 += sizeof(struct bsx); 66537446Srnordier bs = (struct bs *)img; 66637446Srnordier mk1(bs->jmp[0], 0xeb); 66737446Srnordier mk1(bs->jmp[1], x1 - 2); 66837446Srnordier mk1(bs->jmp[2], 0x90); 66937446Srnordier setstr(bs->oem, opt_O ? opt_O : "BSD 4.4", 67037446Srnordier sizeof(bs->oem)); 67137446Srnordier memcpy(img + x1, bootcode, sizeof(bootcode)); 672170166Strhodes mk2(img + MINBPS - 2, DOSMAGIC); 67337446Srnordier } 67437446Srnordier } else if (fat == 32 && bpb.infs != MAXU16 && 67537446Srnordier (lsn == bpb.infs || 67637446Srnordier (bpb.bkbs != MAXU16 && 67737446Srnordier lsn == bpb.bkbs + bpb.infs))) { 67837446Srnordier mk4(img, 0x41615252); 679170166Strhodes mk4(img + MINBPS - 28, 0x61417272); 680170166Strhodes mk4(img + MINBPS - 24, 0xffffffff); 681170166Strhodes mk4(img + MINBPS - 20, bpb.rdcl); 682170166Strhodes mk2(img + MINBPS - 2, DOSMAGIC); 68337446Srnordier } else if (lsn >= bpb.res && lsn < dir && 68437446Srnordier !((lsn - bpb.res) % 68537446Srnordier (bpb.spf ? bpb.spf : bpb.bspf))) { 68637446Srnordier mk1(img[0], bpb.mid); 68737446Srnordier for (x = 1; x < fat * (fat == 32 ? 3 : 2) / 8; x++) 68837446Srnordier mk1(img[x], fat == 32 && x % 4 == 3 ? 0x0f : 0xff); 68937446Srnordier } else if (lsn == dir && opt_L) { 69037759Srnordier de = (struct de *)img; 69137446Srnordier mklabel(de->namext, opt_L); 69237446Srnordier mk1(de->attr, 050); 69337446Srnordier x = (u_int)tm->tm_hour << 11 | 69437446Srnordier (u_int)tm->tm_min << 5 | 69537446Srnordier (u_int)tm->tm_sec >> 1; 69637446Srnordier mk2(de->time, x); 69737446Srnordier x = (u_int)(tm->tm_year - 80) << 9 | 69837446Srnordier (u_int)(tm->tm_mon + 1) << 5 | 69937446Srnordier (u_int)tm->tm_mday; 70037446Srnordier mk2(de->date, x); 70137446Srnordier } 70237446Srnordier if ((n = write(fd, img, bpb.bps)) == -1) 70337446Srnordier err(1, "%s", fname); 704140384Sdelphij if ((unsigned)n != bpb.bps) 70537446Srnordier errx(1, "%s: can't write sector %u", fname, lsn); 70637446Srnordier } 70737446Srnordier } 70837446Srnordier return 0; 70937446Srnordier} 71037446Srnordier 71137446Srnordier/* 712102231Strhodes * Exit with error if file system is mounted. 71337446Srnordier */ 71437446Srnordierstatic void 71537446Srnordiercheck_mounted(const char *fname, mode_t mode) 71637446Srnordier{ 71737446Srnordier struct statfs *mp; 71837446Srnordier const char *s1, *s2; 71937446Srnordier size_t len; 72037446Srnordier int n, r; 72137446Srnordier 72237446Srnordier if (!(n = getmntinfo(&mp, MNT_NOWAIT))) 72337446Srnordier err(1, "getmntinfo"); 72437446Srnordier len = strlen(_PATH_DEV); 72537446Srnordier s1 = fname; 72637446Srnordier if (!strncmp(s1, _PATH_DEV, len)) 72737446Srnordier s1 += len; 72837446Srnordier r = S_ISCHR(mode) && s1 != fname && *s1 == 'r'; 72937446Srnordier for (; n--; mp++) { 73037446Srnordier s2 = mp->f_mntfromname; 73137446Srnordier if (!strncmp(s2, _PATH_DEV, len)) 73237446Srnordier s2 += len; 73337446Srnordier if ((r && s2 != mp->f_mntfromname && !strcmp(s1 + 1, s2)) || 73437446Srnordier !strcmp(s1, s2)) 73537446Srnordier errx(1, "%s is mounted on %s", fname, mp->f_mntonname); 73637446Srnordier } 73737446Srnordier} 73837446Srnordier 73937446Srnordier/* 74037446Srnordier * Get a standard format. 74137446Srnordier */ 74237446Srnordierstatic void 74337446Srnordiergetstdfmt(const char *fmt, struct bpb *bpb) 74437446Srnordier{ 74537446Srnordier u_int x, i; 74637446Srnordier 74737446Srnordier x = sizeof(stdfmt) / sizeof(stdfmt[0]); 74837446Srnordier for (i = 0; i < x && strcmp(fmt, stdfmt[i].name); i++); 74937446Srnordier if (i == x) 75037446Srnordier errx(1, "%s: unknown standard format", fmt); 75137446Srnordier *bpb = stdfmt[i].bpb; 75237446Srnordier} 75337446Srnordier 75437446Srnordier/* 75537446Srnordier * Get disk slice, partition, and geometry information. 75637446Srnordier */ 75737446Srnordierstatic void 758140384Sdelphijgetdiskinfo(int fd, const char *fname, const char *dtype, __unused int oflag, 75937446Srnordier struct bpb *bpb) 76037446Srnordier{ 761106372Sscottl struct disklabel *lp, dlp; 762106372Sscottl struct fd_type type; 763140384Sdelphij off_t ms, hs = 0; 76437446Srnordier 765106372Sscottl lp = NULL; 766106372Sscottl 767106372Sscottl /* If the user specified a disk type, try to use that */ 768106372Sscottl if (dtype != NULL) { 769106372Sscottl lp = getdiskbyname(dtype); 77037446Srnordier } 771106372Sscottl 772106372Sscottl /* Maybe it's a floppy drive */ 773106372Sscottl if (lp == NULL) { 774185345Sluigi if (ioctl(fd, DIOCGMEDIASIZE, &ms) == -1) { 775185345Sluigi struct stat st; 776185345Sluigi 777185345Sluigi if (fstat(fd, &st)) 778185345Sluigi err(1, "Cannot get disk size"); 779185345Sluigi /* create a fake geometry for a file image */ 780185345Sluigi ms = st.st_size; 781185345Sluigi dlp.d_secsize = 512; 782185587Sluigi dlp.d_nsectors = 63; 783185587Sluigi dlp.d_ntracks = 255; 784185345Sluigi dlp.d_secperunit = ms / dlp.d_secsize; 785185345Sluigi lp = &dlp; 786185345Sluigi } else if (ioctl(fd, FD_GTYPE, &type) != -1) { 787106372Sscottl dlp.d_secsize = 128 << type.secsize; 788106372Sscottl dlp.d_nsectors = type.sectrac; 789106372Sscottl dlp.d_ntracks = type.heads; 790106372Sscottl dlp.d_secperunit = ms / dlp.d_secsize; 791106372Sscottl lp = &dlp; 79237446Srnordier } 79337446Srnordier } 794106372Sscottl 795106372Sscottl /* Maybe it's a fixed drive */ 796106372Sscottl if (lp == NULL) { 797106372Sscottl if (ioctl(fd, DIOCGDINFO, &dlp) == -1) { 798189112Savg if (bpb->bps == 0 && ioctl(fd, DIOCGSECTORSIZE, &dlp.d_secsize) == -1) 799125916Stjr errx(1, "Cannot get sector size, %s", strerror(errno)); 800189112Savg 801189112Savg /* XXX Should we use bpb->bps if it's set? */ 802106372Sscottl dlp.d_secperunit = ms / dlp.d_secsize; 803189112Savg 804189112Savg if (bpb->spt == 0 && ioctl(fd, DIOCGFWSECTORS, &dlp.d_nsectors) == -1) { 805189112Savg warnx("Cannot get number of sectors per track, %s", strerror(errno)); 806189112Savg dlp.d_nsectors = 63; 807189112Savg } 808189112Savg if (bpb->hds == 0 && ioctl(fd, DIOCGFWHEADS, &dlp.d_ntracks) == -1) { 809189112Savg warnx("Cannot get number of heads, %s", strerror(errno)); 810189112Savg if (dlp.d_secperunit <= 63*1*1024) 811189112Savg dlp.d_ntracks = 1; 812189112Savg else if (dlp.d_secperunit <= 63*16*1024) 813189112Savg dlp.d_ntracks = 16; 814189112Savg else 815189112Savg dlp.d_ntracks = 255; 816189112Savg } 81737446Srnordier } 818106372Sscottl 819106372Sscottl hs = (ms / dlp.d_secsize) - dlp.d_secperunit; 820106372Sscottl lp = &dlp; 82137446Srnordier } 822106372Sscottl 823106372Sscottl if (bpb->bps == 0) 824106372Sscottl bpb->bps = ckgeom(fname, lp->d_secsize, "bytes/sector"); 825106372Sscottl if (bpb->spt == 0) 826106372Sscottl bpb->spt = ckgeom(fname, lp->d_nsectors, "sectors/track"); 827106372Sscottl if (bpb->hds == 0) 828106372Sscottl bpb->hds = ckgeom(fname, lp->d_ntracks, "drive heads"); 829106372Sscottl if (bpb->bsec == 0) 830106372Sscottl bpb->bsec = lp->d_secperunit; 831106372Sscottl if (bpb->hid == 0) 832106372Sscottl bpb->hid = hs; 83337446Srnordier} 83437446Srnordier 83537446Srnordier/* 83637446Srnordier * Print out BPB values. 83737446Srnordier */ 83837446Srnordierstatic void 83937446Srnordierprint_bpb(struct bpb *bpb) 84037446Srnordier{ 84137446Srnordier printf("bps=%u spc=%u res=%u nft=%u", bpb->bps, bpb->spc, bpb->res, 84237446Srnordier bpb->nft); 84337446Srnordier if (bpb->rde) 84437446Srnordier printf(" rde=%u", bpb->rde); 84537446Srnordier if (bpb->sec) 84637446Srnordier printf(" sec=%u", bpb->sec); 84741586Srnordier printf(" mid=%#x", bpb->mid); 84837446Srnordier if (bpb->spf) 84937446Srnordier printf(" spf=%u", bpb->spf); 85037446Srnordier printf(" spt=%u hds=%u hid=%u", bpb->spt, bpb->hds, bpb->hid); 85137446Srnordier if (bpb->bsec) 85237446Srnordier printf(" bsec=%u", bpb->bsec); 85337446Srnordier if (!bpb->spf) { 85437446Srnordier printf(" bspf=%u rdcl=%u", bpb->bspf, bpb->rdcl); 85537446Srnordier printf(" infs="); 85641586Srnordier printf(bpb->infs == MAXU16 ? "%#x" : "%u", bpb->infs); 85737446Srnordier printf(" bkbs="); 85841586Srnordier printf(bpb->bkbs == MAXU16 ? "%#x" : "%u", bpb->bkbs); 85937446Srnordier } 86037446Srnordier printf("\n"); 86137446Srnordier} 86237446Srnordier 86337446Srnordier/* 86437446Srnordier * Check a disk geometry value. 86537446Srnordier */ 86637446Srnordierstatic u_int 86737446Srnordierckgeom(const char *fname, u_int val, const char *msg) 86837446Srnordier{ 86937446Srnordier if (!val) 87037446Srnordier errx(1, "%s: no default %s", fname, msg); 87137446Srnordier if (val > MAXU16) 872106372Sscottl errx(1, "%s: illegal %s %d", fname, msg, val); 87337446Srnordier return val; 87437446Srnordier} 87537446Srnordier 87637446Srnordier/* 87737446Srnordier * Convert and check a numeric option argument. 87837446Srnordier */ 87937446Srnordierstatic u_int 88037446Srnordierargtou(const char *arg, u_int lo, u_int hi, const char *msg) 88137446Srnordier{ 88237446Srnordier char *s; 88337446Srnordier u_long x; 88437446Srnordier 88537446Srnordier errno = 0; 88637446Srnordier x = strtoul(arg, &s, 0); 88737446Srnordier if (errno || !*arg || *s || x < lo || x > hi) 88837446Srnordier errx(1, "%s: bad %s", arg, msg); 88937446Srnordier return x; 89037446Srnordier} 89137446Srnordier 89237446Srnordier/* 893185587Sluigi * Same for off_t, with optional skmgpP suffix 894185587Sluigi */ 895185587Sluigistatic off_t 896185587Sluigiargtooff(const char *arg, const char *msg) 897185587Sluigi{ 898185587Sluigi char *s; 899185587Sluigi off_t x; 900185587Sluigi 901185587Sluigi x = strtoll(arg, &s, 0); 902185587Sluigi /* allow at most one extra char */ 903185587Sluigi if (errno || x < 0 || (s[0] && s[1]) ) 904185587Sluigi errx(1, "%s: bad %s", arg, msg); 905185587Sluigi if (*s) { /* the extra char is the multiplier */ 906185587Sluigi switch (*s) { 907185587Sluigi default: 908185587Sluigi errx(1, "%s: bad %s", arg, msg); 909185587Sluigi /* notreached */ 910185587Sluigi 911185587Sluigi case 's': /* sector */ 912185587Sluigi case 'S': 913185587Sluigi x <<= 9; /* times 512 */ 914185587Sluigi break; 915185587Sluigi 916185587Sluigi case 'k': /* kilobyte */ 917185587Sluigi case 'K': 918185587Sluigi x <<= 10; /* times 1024 */ 919185587Sluigi break; 920185587Sluigi 921185587Sluigi case 'm': /* megabyte */ 922185587Sluigi case 'M': 923185587Sluigi x <<= 20; /* times 1024*1024 */ 924185587Sluigi break; 925185587Sluigi 926185587Sluigi case 'g': /* gigabyte */ 927185587Sluigi case 'G': 928185587Sluigi x <<= 30; /* times 1024*1024*1024 */ 929185587Sluigi break; 930185587Sluigi 931185587Sluigi case 'p': /* partition start */ 932185587Sluigi case 'P': /* partition start */ 933185587Sluigi case 'l': /* partition length */ 934185587Sluigi case 'L': /* partition length */ 935185587Sluigi errx(1, "%s: not supported yet %s", arg, msg); 936185587Sluigi /* notreached */ 937185587Sluigi } 938185587Sluigi } 939185587Sluigi return x; 940185587Sluigi} 941185587Sluigi 942185587Sluigi/* 94337446Srnordier * Check a volume label. 94437446Srnordier */ 94537446Srnordierstatic int 94637446Srnordieroklabel(const char *src) 94737446Srnordier{ 94837446Srnordier int c, i; 94937446Srnordier 95037446Srnordier for (i = 0; i <= 11; i++) { 95137446Srnordier c = (u_char)*src++; 95237446Srnordier if (c < ' ' + !i || strchr("\"*+,./:;<=>?[\\]|", c)) 95337446Srnordier break; 95437446Srnordier } 95537446Srnordier return i && !c; 95637446Srnordier} 95737446Srnordier 95837446Srnordier/* 95937446Srnordier * Make a volume label. 96037446Srnordier */ 96137446Srnordierstatic void 96237446Srnordiermklabel(u_int8_t *dest, const char *src) 96337446Srnordier{ 96437446Srnordier int c, i; 96537446Srnordier 96637446Srnordier for (i = 0; i < 11; i++) { 96737446Srnordier c = *src ? toupper(*src++) : ' '; 96837446Srnordier *dest++ = !i && c == '\xe5' ? 5 : c; 96937446Srnordier } 97037446Srnordier} 97137446Srnordier 97237446Srnordier/* 97337446Srnordier * Copy string, padding with spaces. 97437446Srnordier */ 97537446Srnordierstatic void 97637446Srnordiersetstr(u_int8_t *dest, const char *src, size_t len) 97737446Srnordier{ 97837446Srnordier while (len--) 97937446Srnordier *dest++ = *src ? *src++ : ' '; 98037446Srnordier} 98137446Srnordier 98237446Srnordier/* 98337446Srnordier * Print usage message. 98437446Srnordier */ 98537446Srnordierstatic void 98637446Srnordierusage(void) 98737446Srnordier{ 988190924Sed fprintf(stderr, 989190924Sed "usage: newfs_msdos [ -options ] special [disktype]\n" 990190924Sed "where the options are:\n" 991190925Sed "\t-@ create file system at specified offset\n" 992190924Sed "\t-B get bootstrap from file\n" 993190925Sed "\t-C create image file with specified size\n" 994190924Sed "\t-F FAT type (12, 16, or 32)\n" 995190924Sed "\t-I volume ID\n" 996190924Sed "\t-L volume label\n" 997190924Sed "\t-N don't create file system: just print out parameters\n" 998190924Sed "\t-O OEM string\n" 999190924Sed "\t-S bytes/sector\n" 1000190924Sed "\t-a sectors/FAT\n" 1001190924Sed "\t-b block size\n" 1002190924Sed "\t-c sectors/cluster\n" 1003190924Sed "\t-e root directory entries\n" 1004190924Sed "\t-f standard format\n" 1005190924Sed "\t-h drive heads\n" 1006190924Sed "\t-i file system info sector\n" 1007190924Sed "\t-k backup boot sector\n" 1008190924Sed "\t-m media descriptor\n" 1009190924Sed "\t-n number of FATs\n" 1010190924Sed "\t-o hidden sectors\n" 1011190924Sed "\t-r reserved sectors\n" 1012190924Sed "\t-s file system size (sectors)\n" 1013190924Sed "\t-u sectors/track\n"); 1014190924Sed exit(1); 101537446Srnordier} 1016