newfs_msdos.c revision 203868
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 203868 2010-02-14 12:25:03Z kib $"; 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 */ 65203868Skib#define MINCLS12 1U /* minimum FAT12 clusters */ 66203868Skib#define MINCLS16 0x1000U /* minimum FAT16 clusters */ 67203868Skib#define MINCLS32 2U /* minimum FAT32 clusters */ 68203868Skib#define MAXCLS12 0xfedU /* maximum FAT12 clusters */ 69203868Skib#define MAXCLS16 0xfff5U /* maximum FAT16 clusters */ 70203868Skib#define MAXCLS32 0xffffff5U /* 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 168203868Skib#define INIT(a, b, c, d, e, f, g, h, i, j) \ 169203868Skib { .bps = a, .spc = b, .res = c, .nft = d, .rde = e, \ 170203868Skib .sec = f, .mid = g, .spf = h, .spt = i, .hds = j, } 17137446Srnordierstatic struct { 17237446Srnordier const char *name; 17337446Srnordier struct bpb bpb; 174190927Sed} const stdfmt[] = { 175203868Skib {"160", INIT(512, 1, 1, 2, 64, 320, 0xfe, 1, 8, 1)}, 176203868Skib {"180", INIT(512, 1, 1, 2, 64, 360, 0xfc, 2, 9, 1)}, 177203868Skib {"320", INIT(512, 2, 1, 2, 112, 640, 0xff, 1, 8, 2)}, 178203868Skib {"360", INIT(512, 2, 1, 2, 112, 720, 0xfd, 2, 9, 2)}, 179203868Skib {"640", INIT(512, 2, 1, 2, 112, 1280, 0xfb, 2, 8, 2)}, 180203868Skib {"720", INIT(512, 2, 1, 2, 112, 1440, 0xf9, 3, 9, 2)}, 181203868Skib {"1200", INIT(512, 1, 1, 2, 224, 2400, 0xf9, 7, 15, 2)}, 182203868Skib {"1232", INIT(1024,1, 1, 2, 192, 1232, 0xfe, 2, 8, 2)}, 183203868Skib {"1440", INIT(512, 1, 1, 2, 224, 2880, 0xf0, 9, 18, 2)}, 184203868Skib {"2880", INIT(512, 2, 1, 2, 240, 5760, 0xf0, 9, 36, 2)} 18537446Srnordier}; 18637446Srnordier 187190927Sedstatic const u_int8_t bootcode[] = { 18837446Srnordier 0xfa, /* cli */ 18937446Srnordier 0x31, 0xc0, /* xor ax,ax */ 19037446Srnordier 0x8e, 0xd0, /* mov ss,ax */ 19137446Srnordier 0xbc, 0x00, 0x7c, /* mov sp,7c00h */ 19237446Srnordier 0xfb, /* sti */ 19337446Srnordier 0x8e, 0xd8, /* mov ds,ax */ 19437446Srnordier 0xe8, 0x00, 0x00, /* call $ + 3 */ 19537446Srnordier 0x5e, /* pop si */ 19637446Srnordier 0x83, 0xc6, 0x19, /* add si,+19h */ 19737446Srnordier 0xbb, 0x07, 0x00, /* mov bx,0007h */ 19837446Srnordier 0xfc, /* cld */ 19937446Srnordier 0xac, /* lodsb */ 20037446Srnordier 0x84, 0xc0, /* test al,al */ 20137446Srnordier 0x74, 0x06, /* jz $ + 8 */ 20237446Srnordier 0xb4, 0x0e, /* mov ah,0eh */ 20337446Srnordier 0xcd, 0x10, /* int 10h */ 20437446Srnordier 0xeb, 0xf5, /* jmp $ - 9 */ 20537446Srnordier 0x30, 0xe4, /* xor ah,ah */ 20637446Srnordier 0xcd, 0x16, /* int 16h */ 20737446Srnordier 0xcd, 0x19, /* int 19h */ 20837446Srnordier 0x0d, 0x0a, 20937446Srnordier 'N', 'o', 'n', '-', 's', 'y', 's', 't', 21037446Srnordier 'e', 'm', ' ', 'd', 'i', 's', 'k', 21137446Srnordier 0x0d, 0x0a, 21237446Srnordier 'P', 'r', 'e', 's', 's', ' ', 'a', 'n', 21337446Srnordier 'y', ' ', 'k', 'e', 'y', ' ', 't', 'o', 21437446Srnordier ' ', 'r', 'e', 'b', 'o', 'o', 't', 21537446Srnordier 0x0d, 0x0a, 21637446Srnordier 0 21737446Srnordier}; 21837446Srnordier 21937446Srnordierstatic void check_mounted(const char *, mode_t); 22037446Srnordierstatic void getstdfmt(const char *, struct bpb *); 22137446Srnordierstatic void getdiskinfo(int, const char *, const char *, int, 22237446Srnordier struct bpb *); 22337446Srnordierstatic void print_bpb(struct bpb *); 22437446Srnordierstatic u_int ckgeom(const char *, u_int, const char *); 22537446Srnordierstatic u_int argtou(const char *, u_int, u_int, const char *); 226185587Sluigistatic off_t argtooff(const char *, const char *); 22737446Srnordierstatic int oklabel(const char *); 22837446Srnordierstatic void mklabel(u_int8_t *, const char *); 22937446Srnordierstatic void setstr(u_int8_t *, const char *, size_t); 23037446Srnordierstatic void usage(void); 23137446Srnordier 23237446Srnordier/* 233102231Strhodes * Construct a FAT12, FAT16, or FAT32 file system. 23437446Srnordier */ 23537446Srnordierint 23637446Srnordiermain(int argc, char *argv[]) 23737446Srnordier{ 238190927Sed 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:"; 239190927Sed const char *opt_B = NULL, *opt_L = NULL, *opt_O = NULL, *opt_f = NULL; 240190927Sed u_int opt_F = 0, opt_I = 0, opt_S = 0, opt_a = 0, opt_b = 0, opt_c = 0; 241190927Sed u_int opt_e = 0, opt_h = 0, opt_i = 0, opt_k = 0, opt_m = 0, opt_n = 0; 242190927Sed u_int opt_o = 0, opt_r = 0, opt_s = 0, opt_u = 0; 243190927Sed int opt_N = 0; 244190927Sed int Iflag = 0, mflag = 0, oflag = 0; 24537446Srnordier char buf[MAXPATHLEN]; 24637446Srnordier struct stat sb; 24737446Srnordier struct timeval tv; 24837446Srnordier struct bpb bpb; 24937446Srnordier struct tm *tm; 25037446Srnordier struct bs *bs; 25137446Srnordier struct bsbpb *bsbpb; 25237446Srnordier struct bsxbpb *bsxbpb; 25337446Srnordier struct bsx *bsx; 25437446Srnordier struct de *de; 25537446Srnordier u_int8_t *img; 25637446Srnordier const char *fname, *dtype, *bname; 25737446Srnordier ssize_t n; 25840487Sbde time_t now; 25937446Srnordier u_int fat, bss, rds, cls, dir, lsn, x, x1, x2; 26037446Srnordier int ch, fd, fd1; 261190927Sed off_t opt_create = 0, opt_ofs = 0; 26237446Srnordier 26337446Srnordier while ((ch = getopt(argc, argv, opts)) != -1) 26437446Srnordier switch (ch) { 265185587Sluigi case '@': 266185587Sluigi opt_ofs = argtooff(optarg, "offset"); 267185587Sluigi break; 26837446Srnordier case 'N': 26937446Srnordier opt_N = 1; 27037446Srnordier break; 27137446Srnordier case 'B': 27237446Srnordier opt_B = optarg; 27337446Srnordier break; 274185587Sluigi case 'C': 275185587Sluigi opt_create = argtooff(optarg, "create size"); 276185587Sluigi break; 27737446Srnordier case 'F': 27837446Srnordier if (strcmp(optarg, "12") && 27937446Srnordier strcmp(optarg, "16") && 28037446Srnordier strcmp(optarg, "32")) 28137446Srnordier errx(1, "%s: bad FAT type", optarg); 28237446Srnordier opt_F = atoi(optarg); 28337446Srnordier break; 28437446Srnordier case 'I': 28537446Srnordier opt_I = argto4(optarg, 0, "volume ID"); 28637446Srnordier Iflag = 1; 28737446Srnordier break; 28837446Srnordier case 'L': 28937446Srnordier if (!oklabel(optarg)) 29037446Srnordier errx(1, "%s: bad volume label", optarg); 29137446Srnordier opt_L = optarg; 29237446Srnordier break; 29337446Srnordier case 'O': 29437446Srnordier if (strlen(optarg) > 8) 29537446Srnordier errx(1, "%s: bad OEM string", optarg); 29637446Srnordier opt_O = optarg; 29737446Srnordier break; 29837446Srnordier case 'S': 29937446Srnordier opt_S = argto2(optarg, 1, "bytes/sector"); 30037446Srnordier break; 30137446Srnordier case 'a': 30237446Srnordier opt_a = argto4(optarg, 1, "sectors/FAT"); 30337446Srnordier break; 30437446Srnordier case 'b': 30537446Srnordier opt_b = argtox(optarg, 1, "block size"); 30637446Srnordier opt_c = 0; 30737446Srnordier break; 30837446Srnordier case 'c': 30937446Srnordier opt_c = argto1(optarg, 1, "sectors/cluster"); 31037446Srnordier opt_b = 0; 31137446Srnordier break; 31237446Srnordier case 'e': 31337446Srnordier opt_e = argto2(optarg, 1, "directory entries"); 31437446Srnordier break; 31537446Srnordier case 'f': 31637446Srnordier opt_f = optarg; 31737446Srnordier break; 31837446Srnordier case 'h': 31937446Srnordier opt_h = argto2(optarg, 1, "drive heads"); 32037446Srnordier break; 32137446Srnordier case 'i': 32237446Srnordier opt_i = argto2(optarg, 1, "info sector"); 32337446Srnordier break; 32437446Srnordier case 'k': 32537446Srnordier opt_k = argto2(optarg, 1, "backup sector"); 32637446Srnordier break; 32737446Srnordier case 'm': 32837446Srnordier opt_m = argto1(optarg, 0, "media descriptor"); 32937446Srnordier mflag = 1; 33037446Srnordier break; 33137446Srnordier case 'n': 33237446Srnordier opt_n = argto1(optarg, 1, "number of FATs"); 33337446Srnordier break; 33437446Srnordier case 'o': 33537446Srnordier opt_o = argto4(optarg, 0, "hidden sectors"); 33637446Srnordier oflag = 1; 33737446Srnordier break; 33837446Srnordier case 'r': 33937446Srnordier opt_r = argto2(optarg, 1, "reserved sectors"); 34037446Srnordier break; 34137446Srnordier case 's': 342102231Strhodes opt_s = argto4(optarg, 1, "file system size"); 34337446Srnordier break; 34437446Srnordier case 'u': 34537446Srnordier opt_u = argto2(optarg, 1, "sectors/track"); 34637446Srnordier break; 34737446Srnordier default: 34837446Srnordier usage(); 34937446Srnordier } 35037446Srnordier argc -= optind; 35137446Srnordier argv += optind; 35237446Srnordier if (argc < 1 || argc > 2) 35337446Srnordier usage(); 35437446Srnordier fname = *argv++; 355190932Sed if (!opt_create && !strchr(fname, '/')) { 35663892Sasmodai snprintf(buf, sizeof(buf), "%s%s", _PATH_DEV, fname); 35737446Srnordier if (!(fname = strdup(buf))) 35837446Srnordier err(1, NULL); 35937446Srnordier } 36037446Srnordier dtype = *argv; 361185587Sluigi if (opt_create) { 362185587Sluigi if (opt_N) 363185587Sluigi errx(1, "create (-C) is incompatible with -N"); 364185587Sluigi fd = open(fname, O_RDWR | O_CREAT | O_TRUNC, 0644); 365185587Sluigi if (fd == -1) 366185587Sluigi errx(1, "failed to create %s", fname); 367190929Sed if (ftruncate(fd, opt_create)) 368185594Smlaier errx(1, "failed to initialize %jd bytes", (intmax_t)opt_create); 369190930Sed } else if ((fd = open(fname, opt_N ? O_RDONLY : O_RDWR)) == -1) 37037446Srnordier err(1, "%s", fname); 371190930Sed if (fstat(fd, &sb)) 372190930Sed err(1, "%s", fname); 373190931Sed if (opt_create) { 374190931Sed if (!S_ISREG(sb.st_mode)) 375190931Sed warnx("warning, %s is not a regular file", fname); 376190931Sed } else { 377190931Sed if (!S_ISCHR(sb.st_mode)) 378190931Sed warnx("warning, %s is not a character device", fname); 379190931Sed } 38037446Srnordier if (!opt_N) 38137446Srnordier check_mounted(fname, sb.st_mode); 382185587Sluigi if (opt_ofs && opt_ofs != lseek(fd, opt_ofs, SEEK_SET)) 383185594Smlaier errx(1, "cannot seek to %jd", (intmax_t)opt_ofs); 38437446Srnordier memset(&bpb, 0, sizeof(bpb)); 38537446Srnordier if (opt_f) { 38637446Srnordier getstdfmt(opt_f, &bpb); 38737446Srnordier bpb.bsec = bpb.sec; 38837446Srnordier bpb.sec = 0; 38937446Srnordier bpb.bspf = bpb.spf; 39037446Srnordier bpb.spf = 0; 39137446Srnordier } 39237446Srnordier if (opt_h) 39337446Srnordier bpb.hds = opt_h; 39437446Srnordier if (opt_u) 39537446Srnordier bpb.spt = opt_u; 39637446Srnordier if (opt_S) 39737446Srnordier bpb.bps = opt_S; 39837446Srnordier if (opt_s) 39937446Srnordier bpb.bsec = opt_s; 40037446Srnordier if (oflag) 40137446Srnordier bpb.hid = opt_o; 402185587Sluigi if (!(opt_f || (opt_h && opt_u && opt_S && opt_s && oflag))) { 403185587Sluigi off_t delta; 40437446Srnordier getdiskinfo(fd, fname, dtype, oflag, &bpb); 405185587Sluigi bpb.bsec -= (opt_ofs / bpb.bps); 406185587Sluigi delta = bpb.bsec % bpb.spt; 407185587Sluigi if (delta != 0) { 408185587Sluigi warnx("trim %d sectors to adjust to a multiple of %d", 409185587Sluigi (int)delta, bpb.spt); 410185587Sluigi bpb.bsec -= delta; 411185587Sluigi } 412185587Sluigi if (bpb.spc == 0) { /* set defaults */ 413185587Sluigi if (bpb.bsec <= 6000) /* about 3MB -> 512 bytes */ 414185587Sluigi bpb.spc = 1; 415185587Sluigi else if (bpb.bsec <= (1<<17)) /* 64M -> 4k */ 416185587Sluigi bpb.spc = 8; 417185587Sluigi else if (bpb.bsec <= (1<<19)) /* 256M -> 8k */ 418185587Sluigi bpb.spc = 16; 419185587Sluigi else if (bpb.bsec <= (1<<21)) /* 1G -> 16k */ 420185587Sluigi bpb.spc = 32; 421185587Sluigi else 422185587Sluigi bpb.spc = 64; /* otherwise 32k */ 423185587Sluigi } 424185587Sluigi } 42537446Srnordier if (!powerof2(bpb.bps)) 42637446Srnordier errx(1, "bytes/sector (%u) is not a power of 2", bpb.bps); 42737446Srnordier if (bpb.bps < MINBPS) 42837446Srnordier errx(1, "bytes/sector (%u) is too small; minimum is %u", 42937446Srnordier bpb.bps, MINBPS); 43048954Sbillf if (!(fat = opt_F)) { 43137446Srnordier if (opt_f) 43237446Srnordier fat = 12; 43337446Srnordier else if (!opt_e && (opt_i || opt_k)) 43437446Srnordier fat = 32; 43548954Sbillf } 43637446Srnordier if ((fat == 32 && opt_e) || (fat != 32 && (opt_i || opt_k))) 43737446Srnordier errx(1, "-%c is not a legal FAT%s option", 43837446Srnordier fat == 32 ? 'e' : opt_i ? 'i' : 'k', 43937446Srnordier fat == 32 ? "32" : "12/16"); 44037446Srnordier if (opt_f && fat == 32) 44137446Srnordier bpb.rde = 0; 44237446Srnordier if (opt_b) { 44337446Srnordier if (!powerof2(opt_b)) 44437446Srnordier errx(1, "block size (%u) is not a power of 2", opt_b); 44537446Srnordier if (opt_b < bpb.bps) 44637446Srnordier errx(1, "block size (%u) is too small; minimum is %u", 44737446Srnordier opt_b, bpb.bps); 44837446Srnordier if (opt_b > bpb.bps * MAXSPC) 44937446Srnordier errx(1, "block size (%u) is too large; maximum is %u", 45037446Srnordier opt_b, bpb.bps * MAXSPC); 45137446Srnordier bpb.spc = opt_b / bpb.bps; 45237446Srnordier } 45337446Srnordier if (opt_c) { 45437446Srnordier if (!powerof2(opt_c)) 45537446Srnordier errx(1, "sectors/cluster (%u) is not a power of 2", opt_c); 45637446Srnordier bpb.spc = opt_c; 45737446Srnordier } 45837446Srnordier if (opt_r) 45937446Srnordier bpb.res = opt_r; 46037446Srnordier if (opt_n) { 46137446Srnordier if (opt_n > MAXNFT) 46237446Srnordier errx(1, "number of FATs (%u) is too large; maximum is %u", 46337446Srnordier opt_n, MAXNFT); 46437446Srnordier bpb.nft = opt_n; 46537446Srnordier } 46637446Srnordier if (opt_e) 46737446Srnordier bpb.rde = opt_e; 46837446Srnordier if (mflag) { 46937446Srnordier if (opt_m < 0xf0) 47041586Srnordier errx(1, "illegal media descriptor (%#x)", opt_m); 47137446Srnordier bpb.mid = opt_m; 47237446Srnordier } 47337446Srnordier if (opt_a) 47437446Srnordier bpb.bspf = opt_a; 47537446Srnordier if (opt_i) 47637446Srnordier bpb.infs = opt_i; 47737446Srnordier if (opt_k) 47837446Srnordier bpb.bkbs = opt_k; 47937446Srnordier bss = 1; 48037446Srnordier bname = NULL; 48137446Srnordier fd1 = -1; 48237446Srnordier if (opt_B) { 48337446Srnordier bname = opt_B; 48437446Srnordier if (!strchr(bname, '/')) { 48542261Sjkh snprintf(buf, sizeof(buf), "/boot/%s", bname); 48637446Srnordier if (!(bname = strdup(buf))) 48737446Srnordier err(1, NULL); 48837446Srnordier } 48937446Srnordier if ((fd1 = open(bname, O_RDONLY)) == -1 || fstat(fd1, &sb)) 49037446Srnordier err(1, "%s", bname); 49137446Srnordier if (!S_ISREG(sb.st_mode) || sb.st_size % bpb.bps || 49237446Srnordier sb.st_size < bpb.bps || sb.st_size > bpb.bps * MAXU16) 49337446Srnordier errx(1, "%s: inappropriate file type or format", bname); 49437446Srnordier bss = sb.st_size / bpb.bps; 49537446Srnordier } 49637446Srnordier if (!bpb.nft) 49737446Srnordier bpb.nft = 2; 49848954Sbillf if (!fat) { 49937446Srnordier if (bpb.bsec < (bpb.res ? bpb.res : bss) + 50037446Srnordier howmany((RESFTE + (bpb.spc ? MINCLS16 : MAXCLS12 + 1)) * 50137446Srnordier ((bpb.spc ? 16 : 12) / BPN), bpb.bps * NPB) * 50237446Srnordier bpb.nft + 50337446Srnordier howmany(bpb.rde ? bpb.rde : DEFRDE, 50437446Srnordier bpb.bps / sizeof(struct de)) + 50537446Srnordier (bpb.spc ? MINCLS16 : MAXCLS12 + 1) * 50637446Srnordier (bpb.spc ? bpb.spc : howmany(DEFBLK, bpb.bps))) 50737446Srnordier fat = 12; 50837446Srnordier else if (bpb.rde || bpb.bsec < 50937446Srnordier (bpb.res ? bpb.res : bss) + 51037446Srnordier howmany((RESFTE + MAXCLS16) * 2, bpb.bps) * bpb.nft + 51137446Srnordier howmany(DEFRDE, bpb.bps / sizeof(struct de)) + 51237446Srnordier (MAXCLS16 + 1) * 51337446Srnordier (bpb.spc ? bpb.spc : howmany(8192, bpb.bps))) 51437446Srnordier fat = 16; 51537446Srnordier else 51637446Srnordier fat = 32; 51748954Sbillf } 51837446Srnordier x = bss; 51937446Srnordier if (fat == 32) { 52037446Srnordier if (!bpb.infs) { 52137446Srnordier if (x == MAXU16 || x == bpb.bkbs) 52237446Srnordier errx(1, "no room for info sector"); 52337446Srnordier bpb.infs = x; 52437446Srnordier } 52537446Srnordier if (bpb.infs != MAXU16 && x <= bpb.infs) 52637446Srnordier x = bpb.infs + 1; 52737446Srnordier if (!bpb.bkbs) { 52837446Srnordier if (x == MAXU16) 52937446Srnordier errx(1, "no room for backup sector"); 53037446Srnordier bpb.bkbs = x; 53137446Srnordier } else if (bpb.bkbs != MAXU16 && bpb.bkbs == bpb.infs) 53237446Srnordier errx(1, "backup sector would overwrite info sector"); 53337446Srnordier if (bpb.bkbs != MAXU16 && x <= bpb.bkbs) 53437446Srnordier x = bpb.bkbs + 1; 53537446Srnordier } 53637446Srnordier if (!bpb.res) 53737446Srnordier bpb.res = fat == 32 ? MAX(x, MAX(16384 / bpb.bps, 4)) : x; 53837446Srnordier else if (bpb.res < x) 539203868Skib errx(1, "too few reserved sectors (need %d have %d)", x, bpb.res); 54037446Srnordier if (fat != 32 && !bpb.rde) 54137446Srnordier bpb.rde = DEFRDE; 54237446Srnordier rds = howmany(bpb.rde, bpb.bps / sizeof(struct de)); 54337446Srnordier if (!bpb.spc) 54437446Srnordier for (bpb.spc = howmany(fat == 16 ? DEFBLK16 : DEFBLK, bpb.bps); 54537446Srnordier bpb.spc < MAXSPC && 54637446Srnordier bpb.res + 54737446Srnordier howmany((RESFTE + maxcls(fat)) * (fat / BPN), 54837446Srnordier bpb.bps * NPB) * bpb.nft + 54937446Srnordier rds + 55037446Srnordier (u_int64_t)(maxcls(fat) + 1) * bpb.spc <= bpb.bsec; 55137446Srnordier bpb.spc <<= 1); 55237446Srnordier if (fat != 32 && bpb.bspf > MAXU16) 55337446Srnordier errx(1, "too many sectors/FAT for FAT12/16"); 55437446Srnordier x1 = bpb.res + rds; 55537446Srnordier x = bpb.bspf ? bpb.bspf : 1; 55637446Srnordier if (x1 + (u_int64_t)x * bpb.nft > bpb.bsec) 557102231Strhodes errx(1, "meta data exceeds file system size"); 55837446Srnordier x1 += x * bpb.nft; 55937446Srnordier x = (u_int64_t)(bpb.bsec - x1) * bpb.bps * NPB / 56037446Srnordier (bpb.spc * bpb.bps * NPB + fat / BPN * bpb.nft); 56137446Srnordier x2 = howmany((RESFTE + MIN(x, maxcls(fat))) * (fat / BPN), 56237446Srnordier bpb.bps * NPB); 56337446Srnordier if (!bpb.bspf) { 56437446Srnordier bpb.bspf = x2; 56537446Srnordier x1 += (bpb.bspf - 1) * bpb.nft; 56637446Srnordier } 56737446Srnordier cls = (bpb.bsec - x1) / bpb.spc; 56837446Srnordier x = (u_int64_t)bpb.bspf * bpb.bps * NPB / (fat / BPN) - RESFTE; 56937446Srnordier if (cls > x) 57037446Srnordier cls = x; 57137446Srnordier if (bpb.bspf < x2) 572102231Strhodes warnx("warning: sectors/FAT limits file system to %u clusters", 57337446Srnordier cls); 57437446Srnordier if (cls < mincls(fat)) 57559215Simp errx(1, "%u clusters too few clusters for FAT%u, need %u", cls, fat, 57659215Simp mincls(fat)); 57737446Srnordier if (cls > maxcls(fat)) { 57837446Srnordier cls = maxcls(fat); 57937446Srnordier bpb.bsec = x1 + (cls + 1) * bpb.spc - 1; 580102231Strhodes warnx("warning: FAT type limits file system to %u sectors", 58137446Srnordier bpb.bsec); 58237446Srnordier } 58337446Srnordier printf("%s: %u sector%s in %u FAT%u cluster%s " 58437446Srnordier "(%u bytes/cluster)\n", fname, cls * bpb.spc, 58537446Srnordier cls * bpb.spc == 1 ? "" : "s", cls, fat, 58637446Srnordier cls == 1 ? "" : "s", bpb.bps * bpb.spc); 58737446Srnordier if (!bpb.mid) 58837446Srnordier bpb.mid = !bpb.hid ? 0xf0 : 0xf8; 58937446Srnordier if (fat == 32) 59037446Srnordier bpb.rdcl = RESFTE; 59137759Srnordier if (bpb.hid + bpb.bsec <= MAXU16) { 59237446Srnordier bpb.sec = bpb.bsec; 59337446Srnordier bpb.bsec = 0; 59437446Srnordier } 59537446Srnordier if (fat != 32) { 59637446Srnordier bpb.spf = bpb.bspf; 59737446Srnordier bpb.bspf = 0; 59837446Srnordier } 59937446Srnordier print_bpb(&bpb); 60037446Srnordier if (!opt_N) { 60137446Srnordier gettimeofday(&tv, NULL); 60240487Sbde now = tv.tv_sec; 60340487Sbde tm = localtime(&now); 60437446Srnordier if (!(img = malloc(bpb.bps))) 60537446Srnordier err(1, NULL); 60637446Srnordier dir = bpb.res + (bpb.spf ? bpb.spf : bpb.bspf) * bpb.nft; 60737446Srnordier for (lsn = 0; lsn < dir + (fat == 32 ? bpb.spc : rds); lsn++) { 60837446Srnordier x = lsn; 60937446Srnordier if (opt_B && 61037446Srnordier fat == 32 && bpb.bkbs != MAXU16 && 61137446Srnordier bss <= bpb.bkbs && x >= bpb.bkbs) { 61237446Srnordier x -= bpb.bkbs; 613185587Sluigi if (!x && lseek(fd1, opt_ofs, SEEK_SET)) 61437446Srnordier err(1, "%s", bname); 61537446Srnordier } 61637446Srnordier if (opt_B && x < bss) { 61737446Srnordier if ((n = read(fd1, img, bpb.bps)) == -1) 61837446Srnordier err(1, "%s", bname); 619140384Sdelphij if ((unsigned)n != bpb.bps) 62037446Srnordier errx(1, "%s: can't read sector %u", bname, x); 62137446Srnordier } else 62237446Srnordier memset(img, 0, bpb.bps); 62337446Srnordier if (!lsn || 62437446Srnordier (fat == 32 && bpb.bkbs != MAXU16 && lsn == bpb.bkbs)) { 62537446Srnordier x1 = sizeof(struct bs); 62637446Srnordier bsbpb = (struct bsbpb *)(img + x1); 62737446Srnordier mk2(bsbpb->bps, bpb.bps); 62837446Srnordier mk1(bsbpb->spc, bpb.spc); 62937446Srnordier mk2(bsbpb->res, bpb.res); 63037446Srnordier mk1(bsbpb->nft, bpb.nft); 63137446Srnordier mk2(bsbpb->rde, bpb.rde); 63237446Srnordier mk2(bsbpb->sec, bpb.sec); 63337446Srnordier mk1(bsbpb->mid, bpb.mid); 63437446Srnordier mk2(bsbpb->spf, bpb.spf); 63537446Srnordier mk2(bsbpb->spt, bpb.spt); 63637446Srnordier mk2(bsbpb->hds, bpb.hds); 63737446Srnordier mk4(bsbpb->hid, bpb.hid); 63837446Srnordier mk4(bsbpb->bsec, bpb.bsec); 63937446Srnordier x1 += sizeof(struct bsbpb); 64037446Srnordier if (fat == 32) { 64137446Srnordier bsxbpb = (struct bsxbpb *)(img + x1); 64237446Srnordier mk4(bsxbpb->bspf, bpb.bspf); 64337446Srnordier mk2(bsxbpb->xflg, 0); 64437446Srnordier mk2(bsxbpb->vers, 0); 64537446Srnordier mk4(bsxbpb->rdcl, bpb.rdcl); 64637446Srnordier mk2(bsxbpb->infs, bpb.infs); 64737446Srnordier mk2(bsxbpb->bkbs, bpb.bkbs); 64837446Srnordier x1 += sizeof(struct bsxbpb); 64937446Srnordier } 65037446Srnordier bsx = (struct bsx *)(img + x1); 65137446Srnordier mk1(bsx->sig, 0x29); 65237446Srnordier if (Iflag) 65337446Srnordier x = opt_I; 65437446Srnordier else 65537446Srnordier x = (((u_int)(1 + tm->tm_mon) << 8 | 65637446Srnordier (u_int)tm->tm_mday) + 65737446Srnordier ((u_int)tm->tm_sec << 8 | 65837446Srnordier (u_int)(tv.tv_usec / 10))) << 16 | 65937446Srnordier ((u_int)(1900 + tm->tm_year) + 66037446Srnordier ((u_int)tm->tm_hour << 8 | 66137446Srnordier (u_int)tm->tm_min)); 66237446Srnordier mk4(bsx->volid, x); 663203868Skib mklabel(bsx->label, opt_L ? opt_L : "NO_NAME"); 66437446Srnordier sprintf(buf, "FAT%u", fat); 66537446Srnordier setstr(bsx->type, buf, sizeof(bsx->type)); 66637446Srnordier if (!opt_B) { 66737446Srnordier x1 += sizeof(struct bsx); 66837446Srnordier bs = (struct bs *)img; 66937446Srnordier mk1(bs->jmp[0], 0xeb); 67037446Srnordier mk1(bs->jmp[1], x1 - 2); 67137446Srnordier mk1(bs->jmp[2], 0x90); 672203868Skib setstr(bs->oem, opt_O ? opt_O : "BSD4.4 ", 67337446Srnordier sizeof(bs->oem)); 67437446Srnordier memcpy(img + x1, bootcode, sizeof(bootcode)); 675170166Strhodes mk2(img + MINBPS - 2, DOSMAGIC); 67637446Srnordier } 67737446Srnordier } else if (fat == 32 && bpb.infs != MAXU16 && 67837446Srnordier (lsn == bpb.infs || 67937446Srnordier (bpb.bkbs != MAXU16 && 68037446Srnordier lsn == bpb.bkbs + bpb.infs))) { 68137446Srnordier mk4(img, 0x41615252); 682170166Strhodes mk4(img + MINBPS - 28, 0x61417272); 683170166Strhodes mk4(img + MINBPS - 24, 0xffffffff); 684170166Strhodes mk4(img + MINBPS - 20, bpb.rdcl); 685170166Strhodes mk2(img + MINBPS - 2, DOSMAGIC); 68637446Srnordier } else if (lsn >= bpb.res && lsn < dir && 68737446Srnordier !((lsn - bpb.res) % 68837446Srnordier (bpb.spf ? bpb.spf : bpb.bspf))) { 68937446Srnordier mk1(img[0], bpb.mid); 69037446Srnordier for (x = 1; x < fat * (fat == 32 ? 3 : 2) / 8; x++) 69137446Srnordier mk1(img[x], fat == 32 && x % 4 == 3 ? 0x0f : 0xff); 69237446Srnordier } else if (lsn == dir && opt_L) { 69337759Srnordier de = (struct de *)img; 69437446Srnordier mklabel(de->namext, opt_L); 69537446Srnordier mk1(de->attr, 050); 69637446Srnordier x = (u_int)tm->tm_hour << 11 | 69737446Srnordier (u_int)tm->tm_min << 5 | 69837446Srnordier (u_int)tm->tm_sec >> 1; 69937446Srnordier mk2(de->time, x); 70037446Srnordier x = (u_int)(tm->tm_year - 80) << 9 | 70137446Srnordier (u_int)(tm->tm_mon + 1) << 5 | 70237446Srnordier (u_int)tm->tm_mday; 70337446Srnordier mk2(de->date, x); 70437446Srnordier } 70537446Srnordier if ((n = write(fd, img, bpb.bps)) == -1) 70637446Srnordier err(1, "%s", fname); 707140384Sdelphij if ((unsigned)n != bpb.bps) 70837446Srnordier errx(1, "%s: can't write sector %u", fname, lsn); 70937446Srnordier } 71037446Srnordier } 71137446Srnordier return 0; 71237446Srnordier} 71337446Srnordier 71437446Srnordier/* 715102231Strhodes * Exit with error if file system is mounted. 71637446Srnordier */ 71737446Srnordierstatic void 71837446Srnordiercheck_mounted(const char *fname, mode_t mode) 71937446Srnordier{ 72037446Srnordier struct statfs *mp; 72137446Srnordier const char *s1, *s2; 72237446Srnordier size_t len; 72337446Srnordier int n, r; 72437446Srnordier 72537446Srnordier if (!(n = getmntinfo(&mp, MNT_NOWAIT))) 72637446Srnordier err(1, "getmntinfo"); 72737446Srnordier len = strlen(_PATH_DEV); 72837446Srnordier s1 = fname; 72937446Srnordier if (!strncmp(s1, _PATH_DEV, len)) 73037446Srnordier s1 += len; 73137446Srnordier r = S_ISCHR(mode) && s1 != fname && *s1 == 'r'; 73237446Srnordier for (; n--; mp++) { 73337446Srnordier s2 = mp->f_mntfromname; 73437446Srnordier if (!strncmp(s2, _PATH_DEV, len)) 73537446Srnordier s2 += len; 73637446Srnordier if ((r && s2 != mp->f_mntfromname && !strcmp(s1 + 1, s2)) || 73737446Srnordier !strcmp(s1, s2)) 73837446Srnordier errx(1, "%s is mounted on %s", fname, mp->f_mntonname); 73937446Srnordier } 74037446Srnordier} 74137446Srnordier 74237446Srnordier/* 74337446Srnordier * Get a standard format. 74437446Srnordier */ 74537446Srnordierstatic void 74637446Srnordiergetstdfmt(const char *fmt, struct bpb *bpb) 74737446Srnordier{ 74837446Srnordier u_int x, i; 74937446Srnordier 75037446Srnordier x = sizeof(stdfmt) / sizeof(stdfmt[0]); 75137446Srnordier for (i = 0; i < x && strcmp(fmt, stdfmt[i].name); i++); 75237446Srnordier if (i == x) 75337446Srnordier errx(1, "%s: unknown standard format", fmt); 75437446Srnordier *bpb = stdfmt[i].bpb; 75537446Srnordier} 75637446Srnordier 75737446Srnordier/* 75837446Srnordier * Get disk slice, partition, and geometry information. 75937446Srnordier */ 76037446Srnordierstatic void 761140384Sdelphijgetdiskinfo(int fd, const char *fname, const char *dtype, __unused int oflag, 76237446Srnordier struct bpb *bpb) 76337446Srnordier{ 764106372Sscottl struct disklabel *lp, dlp; 765106372Sscottl struct fd_type type; 766140384Sdelphij off_t ms, hs = 0; 76737446Srnordier 768106372Sscottl lp = NULL; 769106372Sscottl 770106372Sscottl /* If the user specified a disk type, try to use that */ 771106372Sscottl if (dtype != NULL) { 772106372Sscottl lp = getdiskbyname(dtype); 77337446Srnordier } 774106372Sscottl 775106372Sscottl /* Maybe it's a floppy drive */ 776106372Sscottl if (lp == NULL) { 777185345Sluigi if (ioctl(fd, DIOCGMEDIASIZE, &ms) == -1) { 778185345Sluigi struct stat st; 779185345Sluigi 780185345Sluigi if (fstat(fd, &st)) 781185345Sluigi err(1, "Cannot get disk size"); 782185345Sluigi /* create a fake geometry for a file image */ 783185345Sluigi ms = st.st_size; 784185345Sluigi dlp.d_secsize = 512; 785185587Sluigi dlp.d_nsectors = 63; 786185587Sluigi dlp.d_ntracks = 255; 787185345Sluigi dlp.d_secperunit = ms / dlp.d_secsize; 788185345Sluigi lp = &dlp; 789185345Sluigi } else if (ioctl(fd, FD_GTYPE, &type) != -1) { 790106372Sscottl dlp.d_secsize = 128 << type.secsize; 791106372Sscottl dlp.d_nsectors = type.sectrac; 792106372Sscottl dlp.d_ntracks = type.heads; 793106372Sscottl dlp.d_secperunit = ms / dlp.d_secsize; 794106372Sscottl lp = &dlp; 79537446Srnordier } 79637446Srnordier } 797106372Sscottl 798106372Sscottl /* Maybe it's a fixed drive */ 799106372Sscottl if (lp == NULL) { 800106372Sscottl if (ioctl(fd, DIOCGDINFO, &dlp) == -1) { 801189112Savg if (bpb->bps == 0 && ioctl(fd, DIOCGSECTORSIZE, &dlp.d_secsize) == -1) 802125916Stjr errx(1, "Cannot get sector size, %s", strerror(errno)); 803189112Savg 804189112Savg /* XXX Should we use bpb->bps if it's set? */ 805106372Sscottl dlp.d_secperunit = ms / dlp.d_secsize; 806189112Savg 807189112Savg if (bpb->spt == 0 && ioctl(fd, DIOCGFWSECTORS, &dlp.d_nsectors) == -1) { 808189112Savg warnx("Cannot get number of sectors per track, %s", strerror(errno)); 809189112Savg dlp.d_nsectors = 63; 810189112Savg } 811189112Savg if (bpb->hds == 0 && ioctl(fd, DIOCGFWHEADS, &dlp.d_ntracks) == -1) { 812189112Savg warnx("Cannot get number of heads, %s", strerror(errno)); 813189112Savg if (dlp.d_secperunit <= 63*1*1024) 814189112Savg dlp.d_ntracks = 1; 815189112Savg else if (dlp.d_secperunit <= 63*16*1024) 816189112Savg dlp.d_ntracks = 16; 817189112Savg else 818189112Savg dlp.d_ntracks = 255; 819189112Savg } 82037446Srnordier } 821106372Sscottl 822106372Sscottl hs = (ms / dlp.d_secsize) - dlp.d_secperunit; 823106372Sscottl lp = &dlp; 82437446Srnordier } 825106372Sscottl 826106372Sscottl if (bpb->bps == 0) 827106372Sscottl bpb->bps = ckgeom(fname, lp->d_secsize, "bytes/sector"); 828106372Sscottl if (bpb->spt == 0) 829106372Sscottl bpb->spt = ckgeom(fname, lp->d_nsectors, "sectors/track"); 830106372Sscottl if (bpb->hds == 0) 831106372Sscottl bpb->hds = ckgeom(fname, lp->d_ntracks, "drive heads"); 832106372Sscottl if (bpb->bsec == 0) 833106372Sscottl bpb->bsec = lp->d_secperunit; 834106372Sscottl if (bpb->hid == 0) 835106372Sscottl bpb->hid = hs; 83637446Srnordier} 83737446Srnordier 83837446Srnordier/* 83937446Srnordier * Print out BPB values. 84037446Srnordier */ 84137446Srnordierstatic void 84237446Srnordierprint_bpb(struct bpb *bpb) 84337446Srnordier{ 84437446Srnordier printf("bps=%u spc=%u res=%u nft=%u", bpb->bps, bpb->spc, bpb->res, 84537446Srnordier bpb->nft); 84637446Srnordier if (bpb->rde) 84737446Srnordier printf(" rde=%u", bpb->rde); 84837446Srnordier if (bpb->sec) 84937446Srnordier printf(" sec=%u", bpb->sec); 85041586Srnordier printf(" mid=%#x", bpb->mid); 85137446Srnordier if (bpb->spf) 85237446Srnordier printf(" spf=%u", bpb->spf); 85337446Srnordier printf(" spt=%u hds=%u hid=%u", bpb->spt, bpb->hds, bpb->hid); 85437446Srnordier if (bpb->bsec) 85537446Srnordier printf(" bsec=%u", bpb->bsec); 85637446Srnordier if (!bpb->spf) { 85737446Srnordier printf(" bspf=%u rdcl=%u", bpb->bspf, bpb->rdcl); 85837446Srnordier printf(" infs="); 85941586Srnordier printf(bpb->infs == MAXU16 ? "%#x" : "%u", bpb->infs); 86037446Srnordier printf(" bkbs="); 86141586Srnordier printf(bpb->bkbs == MAXU16 ? "%#x" : "%u", bpb->bkbs); 86237446Srnordier } 86337446Srnordier printf("\n"); 86437446Srnordier} 86537446Srnordier 86637446Srnordier/* 86737446Srnordier * Check a disk geometry value. 86837446Srnordier */ 86937446Srnordierstatic u_int 87037446Srnordierckgeom(const char *fname, u_int val, const char *msg) 87137446Srnordier{ 87237446Srnordier if (!val) 87337446Srnordier errx(1, "%s: no default %s", fname, msg); 87437446Srnordier if (val > MAXU16) 875106372Sscottl errx(1, "%s: illegal %s %d", fname, msg, val); 87637446Srnordier return val; 87737446Srnordier} 87837446Srnordier 87937446Srnordier/* 88037446Srnordier * Convert and check a numeric option argument. 88137446Srnordier */ 88237446Srnordierstatic u_int 88337446Srnordierargtou(const char *arg, u_int lo, u_int hi, const char *msg) 88437446Srnordier{ 88537446Srnordier char *s; 88637446Srnordier u_long x; 88737446Srnordier 88837446Srnordier errno = 0; 88937446Srnordier x = strtoul(arg, &s, 0); 89037446Srnordier if (errno || !*arg || *s || x < lo || x > hi) 89137446Srnordier errx(1, "%s: bad %s", arg, msg); 89237446Srnordier return x; 89337446Srnordier} 89437446Srnordier 89537446Srnordier/* 896185587Sluigi * Same for off_t, with optional skmgpP suffix 897185587Sluigi */ 898185587Sluigistatic off_t 899185587Sluigiargtooff(const char *arg, const char *msg) 900185587Sluigi{ 901185587Sluigi char *s; 902185587Sluigi off_t x; 903185587Sluigi 904185587Sluigi x = strtoll(arg, &s, 0); 905185587Sluigi /* allow at most one extra char */ 906185587Sluigi if (errno || x < 0 || (s[0] && s[1]) ) 907185587Sluigi errx(1, "%s: bad %s", arg, msg); 908185587Sluigi if (*s) { /* the extra char is the multiplier */ 909185587Sluigi switch (*s) { 910185587Sluigi default: 911185587Sluigi errx(1, "%s: bad %s", arg, msg); 912185587Sluigi /* notreached */ 913185587Sluigi 914185587Sluigi case 's': /* sector */ 915185587Sluigi case 'S': 916185587Sluigi x <<= 9; /* times 512 */ 917185587Sluigi break; 918185587Sluigi 919185587Sluigi case 'k': /* kilobyte */ 920185587Sluigi case 'K': 921185587Sluigi x <<= 10; /* times 1024 */ 922185587Sluigi break; 923185587Sluigi 924185587Sluigi case 'm': /* megabyte */ 925185587Sluigi case 'M': 926185587Sluigi x <<= 20; /* times 1024*1024 */ 927185587Sluigi break; 928185587Sluigi 929185587Sluigi case 'g': /* gigabyte */ 930185587Sluigi case 'G': 931185587Sluigi x <<= 30; /* times 1024*1024*1024 */ 932185587Sluigi break; 933185587Sluigi 934185587Sluigi case 'p': /* partition start */ 935185587Sluigi case 'P': /* partition start */ 936185587Sluigi case 'l': /* partition length */ 937185587Sluigi case 'L': /* partition length */ 938185587Sluigi errx(1, "%s: not supported yet %s", arg, msg); 939185587Sluigi /* notreached */ 940185587Sluigi } 941185587Sluigi } 942185587Sluigi return x; 943185587Sluigi} 944185587Sluigi 945185587Sluigi/* 94637446Srnordier * Check a volume label. 94737446Srnordier */ 94837446Srnordierstatic int 94937446Srnordieroklabel(const char *src) 95037446Srnordier{ 95137446Srnordier int c, i; 95237446Srnordier 95337446Srnordier for (i = 0; i <= 11; i++) { 95437446Srnordier c = (u_char)*src++; 95537446Srnordier if (c < ' ' + !i || strchr("\"*+,./:;<=>?[\\]|", c)) 95637446Srnordier break; 95737446Srnordier } 95837446Srnordier return i && !c; 95937446Srnordier} 96037446Srnordier 96137446Srnordier/* 96237446Srnordier * Make a volume label. 96337446Srnordier */ 96437446Srnordierstatic void 96537446Srnordiermklabel(u_int8_t *dest, const char *src) 96637446Srnordier{ 96737446Srnordier int c, i; 96837446Srnordier 96937446Srnordier for (i = 0; i < 11; i++) { 97037446Srnordier c = *src ? toupper(*src++) : ' '; 97137446Srnordier *dest++ = !i && c == '\xe5' ? 5 : c; 97237446Srnordier } 97337446Srnordier} 97437446Srnordier 97537446Srnordier/* 97637446Srnordier * Copy string, padding with spaces. 97737446Srnordier */ 97837446Srnordierstatic void 97937446Srnordiersetstr(u_int8_t *dest, const char *src, size_t len) 98037446Srnordier{ 98137446Srnordier while (len--) 98237446Srnordier *dest++ = *src ? *src++ : ' '; 98337446Srnordier} 98437446Srnordier 98537446Srnordier/* 98637446Srnordier * Print usage message. 98737446Srnordier */ 98837446Srnordierstatic void 98937446Srnordierusage(void) 99037446Srnordier{ 991190924Sed fprintf(stderr, 992190924Sed "usage: newfs_msdos [ -options ] special [disktype]\n" 993190924Sed "where the options are:\n" 994190925Sed "\t-@ create file system at specified offset\n" 995190924Sed "\t-B get bootstrap from file\n" 996190925Sed "\t-C create image file with specified size\n" 997190924Sed "\t-F FAT type (12, 16, or 32)\n" 998190924Sed "\t-I volume ID\n" 999190924Sed "\t-L volume label\n" 1000190924Sed "\t-N don't create file system: just print out parameters\n" 1001190924Sed "\t-O OEM string\n" 1002190924Sed "\t-S bytes/sector\n" 1003190924Sed "\t-a sectors/FAT\n" 1004190924Sed "\t-b block size\n" 1005190924Sed "\t-c sectors/cluster\n" 1006190924Sed "\t-e root directory entries\n" 1007190924Sed "\t-f standard format\n" 1008190924Sed "\t-h drive heads\n" 1009190924Sed "\t-i file system info sector\n" 1010190924Sed "\t-k backup boot sector\n" 1011190924Sed "\t-m media descriptor\n" 1012190924Sed "\t-n number of FATs\n" 1013190924Sed "\t-o hidden sectors\n" 1014190924Sed "\t-r reserved sectors\n" 1015190924Sed "\t-s file system size (sectors)\n" 1016190924Sed "\t-u sectors/track\n"); 1017190924Sed exit(1); 101837446Srnordier} 1019