mkfs_msdos.c revision 1.1.2.2
1 1.1.2.2 yamt /* $NetBSD: mkfs_msdos.c,v 1.1.2.2 2013/01/23 00:05:32 yamt Exp $ */ 2 1.1.2.2 yamt 3 1.1.2.2 yamt /* 4 1.1.2.2 yamt * Copyright (c) 1998 Robert Nordier 5 1.1.2.2 yamt * All rights reserved. 6 1.1.2.2 yamt * 7 1.1.2.2 yamt * Redistribution and use in source and binary forms, with or without 8 1.1.2.2 yamt * modification, are permitted provided that the following conditions 9 1.1.2.2 yamt * are met: 10 1.1.2.2 yamt * 1. Redistributions of source code must retain the above copyright 11 1.1.2.2 yamt * notice, this list of conditions and the following disclaimer. 12 1.1.2.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 13 1.1.2.2 yamt * notice, this list of conditions and the following disclaimer in 14 1.1.2.2 yamt * the documentation and/or other materials provided with the 15 1.1.2.2 yamt * distribution. 16 1.1.2.2 yamt * 17 1.1.2.2 yamt * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS 18 1.1.2.2 yamt * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 1.1.2.2 yamt * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 1.1.2.2 yamt * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY 21 1.1.2.2 yamt * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 1.1.2.2 yamt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 23 1.1.2.2 yamt * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 1.1.2.2 yamt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 25 1.1.2.2 yamt * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 26 1.1.2.2 yamt * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 27 1.1.2.2 yamt * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 1.1.2.2 yamt */ 29 1.1.2.2 yamt 30 1.1.2.2 yamt #include <sys/cdefs.h> 31 1.1.2.2 yamt #ifndef lint 32 1.1.2.2 yamt #if 0 33 1.1.2.2 yamt static const char rcsid[] = 34 1.1.2.2 yamt "$FreeBSD: src/sbin/newfs_msdos/newfs_msdos.c,v 1.15 2000/10/10 01:49:37 wollman Exp $"; 35 1.1.2.2 yamt #else 36 1.1.2.2 yamt __RCSID("$NetBSD: mkfs_msdos.c,v 1.1.2.2 2013/01/23 00:05:32 yamt Exp $"); 37 1.1.2.2 yamt #endif 38 1.1.2.2 yamt #endif /* not lint */ 39 1.1.2.2 yamt 40 1.1.2.2 yamt #include <sys/types.h> 41 1.1.2.2 yamt #include <sys/param.h> 42 1.1.2.2 yamt #include <sys/mount.h> 43 1.1.2.2 yamt #include <sys/stat.h> 44 1.1.2.2 yamt #include <sys/time.h> 45 1.1.2.2 yamt #include <sys/disk.h> 46 1.1.2.2 yamt 47 1.1.2.2 yamt #include <ctype.h> 48 1.1.2.2 yamt #include <err.h> 49 1.1.2.2 yamt #include <errno.h> 50 1.1.2.2 yamt #include <fcntl.h> 51 1.1.2.2 yamt #include <paths.h> 52 1.1.2.2 yamt #include <stdio.h> 53 1.1.2.2 yamt #include <stdlib.h> 54 1.1.2.2 yamt #include <string.h> 55 1.1.2.2 yamt #include <time.h> 56 1.1.2.2 yamt #include <unistd.h> 57 1.1.2.2 yamt #include <signal.h> 58 1.1.2.2 yamt 59 1.1.2.2 yamt #include <util.h> 60 1.1.2.2 yamt #include <disktab.h> 61 1.1.2.2 yamt 62 1.1.2.2 yamt #include "partutil.h" 63 1.1.2.2 yamt #include "mkfs_msdos.h" 64 1.1.2.2 yamt 65 1.1.2.2 yamt #define MAXU16 0xffff /* maximum unsigned 16-bit quantity */ 66 1.1.2.2 yamt #define BPN 4 /* bits per nibble */ 67 1.1.2.2 yamt #define NPB 2 /* nibbles per byte */ 68 1.1.2.2 yamt 69 1.1.2.2 yamt #define DOSMAGIC 0xaa55 /* DOS magic number */ 70 1.1.2.2 yamt #define MINBPS 512 /* minimum bytes per sector */ 71 1.1.2.2 yamt #define MAXSPC 128 /* maximum sectors per cluster */ 72 1.1.2.2 yamt #define MAXNFT 16 /* maximum number of FATs */ 73 1.1.2.2 yamt #define DEFBLK 4096 /* default block size */ 74 1.1.2.2 yamt #define DEFBLK16 2048 /* default block size FAT16 */ 75 1.1.2.2 yamt #define DEFRDE 512 /* default root directory entries */ 76 1.1.2.2 yamt #define RESFTE 2 /* reserved FAT entries */ 77 1.1.2.2 yamt #define MINCLS12 1 /* minimum FAT12 clusters */ 78 1.1.2.2 yamt #define MINCLS16 0xff5 /* minimum FAT16 clusters */ 79 1.1.2.2 yamt #define MINCLS32 0xfff5 /* minimum FAT32 clusters */ 80 1.1.2.2 yamt #define MAXCLS12 0xff4 /* maximum FAT12 clusters */ 81 1.1.2.2 yamt #define MAXCLS16 0xfff4 /* maximum FAT16 clusters */ 82 1.1.2.2 yamt #define MAXCLS32 0xffffff4 /* maximum FAT32 clusters */ 83 1.1.2.2 yamt 84 1.1.2.2 yamt #define mincls(fat_type) ((fat_type) == 12 ? MINCLS12 : \ 85 1.1.2.2 yamt (fat_type) == 16 ? MINCLS16 : \ 86 1.1.2.2 yamt MINCLS32) 87 1.1.2.2 yamt 88 1.1.2.2 yamt #define maxcls(fat_type) ((fat_type) == 12 ? MAXCLS12 : \ 89 1.1.2.2 yamt (fat_type) == 16 ? MAXCLS16 : \ 90 1.1.2.2 yamt MAXCLS32) 91 1.1.2.2 yamt 92 1.1.2.2 yamt #define mk1(p, x) \ 93 1.1.2.2 yamt (p) = (u_int8_t)(x) 94 1.1.2.2 yamt 95 1.1.2.2 yamt #define mk2(p, x) \ 96 1.1.2.2 yamt (p)[0] = (u_int8_t)(x), \ 97 1.1.2.2 yamt (p)[1] = (u_int8_t)((x) >> 010) 98 1.1.2.2 yamt 99 1.1.2.2 yamt #define mk4(p, x) \ 100 1.1.2.2 yamt (p)[0] = (u_int8_t)(x), \ 101 1.1.2.2 yamt (p)[1] = (u_int8_t)((x) >> 010), \ 102 1.1.2.2 yamt (p)[2] = (u_int8_t)((x) >> 020), \ 103 1.1.2.2 yamt (p)[3] = (u_int8_t)((x) >> 030) 104 1.1.2.2 yamt 105 1.1.2.2 yamt struct bs { 106 1.1.2.2 yamt u_int8_t jmp[3]; /* bootstrap entry point */ 107 1.1.2.2 yamt u_int8_t oem[8]; /* OEM name and version */ 108 1.1.2.2 yamt }; 109 1.1.2.2 yamt 110 1.1.2.2 yamt struct bsbpb { 111 1.1.2.2 yamt u_int8_t bps[2]; /* bytes per sector */ 112 1.1.2.2 yamt u_int8_t spc; /* sectors per cluster */ 113 1.1.2.2 yamt u_int8_t res[2]; /* reserved sectors */ 114 1.1.2.2 yamt u_int8_t nft; /* number of FATs */ 115 1.1.2.2 yamt u_int8_t rde[2]; /* root directory entries */ 116 1.1.2.2 yamt u_int8_t sec[2]; /* total sectors */ 117 1.1.2.2 yamt u_int8_t mid; /* media descriptor */ 118 1.1.2.2 yamt u_int8_t spf[2]; /* sectors per FAT */ 119 1.1.2.2 yamt u_int8_t spt[2]; /* sectors per track */ 120 1.1.2.2 yamt u_int8_t hds[2]; /* drive heads */ 121 1.1.2.2 yamt u_int8_t hid[4]; /* hidden sectors */ 122 1.1.2.2 yamt u_int8_t bsec[4]; /* big total sectors */ 123 1.1.2.2 yamt }; 124 1.1.2.2 yamt 125 1.1.2.2 yamt struct bsxbpb { 126 1.1.2.2 yamt u_int8_t bspf[4]; /* big sectors per FAT */ 127 1.1.2.2 yamt u_int8_t xflg[2]; /* FAT control flags */ 128 1.1.2.2 yamt u_int8_t vers[2]; /* file system version */ 129 1.1.2.2 yamt u_int8_t rdcl[4]; /* root directory start cluster */ 130 1.1.2.2 yamt u_int8_t infs[2]; /* file system info sector */ 131 1.1.2.2 yamt u_int8_t bkbs[2]; /* backup boot sector */ 132 1.1.2.2 yamt u_int8_t rsvd[12]; /* reserved */ 133 1.1.2.2 yamt }; 134 1.1.2.2 yamt 135 1.1.2.2 yamt struct bsx { 136 1.1.2.2 yamt u_int8_t drv; /* drive number */ 137 1.1.2.2 yamt u_int8_t rsvd; /* reserved */ 138 1.1.2.2 yamt u_int8_t sig; /* extended boot signature */ 139 1.1.2.2 yamt u_int8_t volid[4]; /* volume ID number */ 140 1.1.2.2 yamt u_int8_t label[11]; /* volume label */ 141 1.1.2.2 yamt u_int8_t type[8]; /* file system type */ 142 1.1.2.2 yamt }; 143 1.1.2.2 yamt 144 1.1.2.2 yamt struct de { 145 1.1.2.2 yamt u_int8_t namext[11]; /* name and extension */ 146 1.1.2.2 yamt u_int8_t attr; /* attributes */ 147 1.1.2.2 yamt u_int8_t rsvd[10]; /* reserved */ 148 1.1.2.2 yamt u_int8_t time[2]; /* creation time */ 149 1.1.2.2 yamt u_int8_t date[2]; /* creation date */ 150 1.1.2.2 yamt u_int8_t clus[2]; /* starting cluster */ 151 1.1.2.2 yamt u_int8_t size[4]; /* size */ 152 1.1.2.2 yamt }; 153 1.1.2.2 yamt 154 1.1.2.2 yamt struct bpb { 155 1.1.2.2 yamt u_int bps; /* bytes per sector */ 156 1.1.2.2 yamt u_int spc; /* sectors per cluster */ 157 1.1.2.2 yamt u_int res; /* reserved sectors */ 158 1.1.2.2 yamt u_int nft; /* number of FATs */ 159 1.1.2.2 yamt u_int rde; /* root directory entries */ 160 1.1.2.2 yamt u_int sec; /* total sectors */ 161 1.1.2.2 yamt u_int mid; /* media descriptor */ 162 1.1.2.2 yamt u_int spf; /* sectors per FAT */ 163 1.1.2.2 yamt u_int spt; /* sectors per track */ 164 1.1.2.2 yamt u_int hds; /* drive heads */ 165 1.1.2.2 yamt u_int hid; /* hidden sectors */ 166 1.1.2.2 yamt u_int bsec; /* big total sectors */ 167 1.1.2.2 yamt u_int bspf; /* big sectors per FAT */ 168 1.1.2.2 yamt u_int rdcl; /* root directory start cluster */ 169 1.1.2.2 yamt u_int infs; /* file system info sector */ 170 1.1.2.2 yamt u_int bkbs; /* backup boot sector */ 171 1.1.2.2 yamt }; 172 1.1.2.2 yamt 173 1.1.2.2 yamt #define INIT(a, b, c, d, e, f, g, h, i, j) \ 174 1.1.2.2 yamt { .bps = a, .spc = b, .res = c, .nft = d, .rde = e, \ 175 1.1.2.2 yamt .sec = f, .mid = g, .spf = h, .spt = i, .hds = j, } 176 1.1.2.2 yamt static struct { 177 1.1.2.2 yamt const char *name; 178 1.1.2.2 yamt struct bpb bpb; 179 1.1.2.2 yamt } stdfmt[] = { 180 1.1.2.2 yamt {"160", INIT(512, 1, 1, 2, 64, 320, 0xfe, 1, 8, 1)}, 181 1.1.2.2 yamt {"180", INIT(512, 1, 1, 2, 64, 360, 0xfc, 2, 9, 1)}, 182 1.1.2.2 yamt {"320", INIT(512, 2, 1, 2, 112, 640, 0xff, 1, 8, 2)}, 183 1.1.2.2 yamt {"360", INIT(512, 2, 1, 2, 112, 720, 0xfd, 2, 9, 2)}, 184 1.1.2.2 yamt {"640", INIT(512, 2, 1, 2, 112, 1280, 0xfb, 2, 8, 2)}, 185 1.1.2.2 yamt {"720", INIT(512, 2, 1, 2, 112, 1440, 0xf9, 3, 9, 2)}, 186 1.1.2.2 yamt {"1200", INIT(512, 1, 1, 2, 224, 2400, 0xf9, 7, 15, 2)}, 187 1.1.2.2 yamt {"1232", INIT(1024,1, 1, 2, 192, 1232, 0xfe, 2, 8, 2)}, 188 1.1.2.2 yamt {"1440", INIT(512, 1, 1, 2, 224, 2880, 0xf0, 9, 18, 2)}, 189 1.1.2.2 yamt {"2880", INIT(512, 2, 1, 2, 240, 5760, 0xf0, 9, 36, 2)} 190 1.1.2.2 yamt }; 191 1.1.2.2 yamt 192 1.1.2.2 yamt static u_int8_t bootcode[] = { 193 1.1.2.2 yamt 0xfa, /* cli */ 194 1.1.2.2 yamt 0x31, 0xc0, /* xor ax,ax */ 195 1.1.2.2 yamt 0x8e, 0xd0, /* mov ss,ax */ 196 1.1.2.2 yamt 0xbc, 0x00, 0x7c, /* mov sp,7c00h */ 197 1.1.2.2 yamt 0xfb, /* sti */ 198 1.1.2.2 yamt 0x8e, 0xd8, /* mov ds,ax */ 199 1.1.2.2 yamt 0xe8, 0x00, 0x00, /* call $ + 3 */ 200 1.1.2.2 yamt 0x5e, /* pop si */ 201 1.1.2.2 yamt 0x83, 0xc6, 0x19, /* add si,+19h */ 202 1.1.2.2 yamt 0xbb, 0x07, 0x00, /* mov bx,0007h */ 203 1.1.2.2 yamt 0xfc, /* cld */ 204 1.1.2.2 yamt 0xac, /* lodsb */ 205 1.1.2.2 yamt 0x84, 0xc0, /* test al,al */ 206 1.1.2.2 yamt 0x74, 0x06, /* jz $ + 8 */ 207 1.1.2.2 yamt 0xb4, 0x0e, /* mov ah,0eh */ 208 1.1.2.2 yamt 0xcd, 0x10, /* int 10h */ 209 1.1.2.2 yamt 0xeb, 0xf5, /* jmp $ - 9 */ 210 1.1.2.2 yamt 0x30, 0xe4, /* xor ah,ah */ 211 1.1.2.2 yamt 0xcd, 0x16, /* int 16h */ 212 1.1.2.2 yamt 0xcd, 0x19, /* int 19h */ 213 1.1.2.2 yamt 0x0d, 0x0a, 214 1.1.2.2 yamt 'N', 'o', 'n', '-', 's', 'y', 's', 't', 215 1.1.2.2 yamt 'e', 'm', ' ', 'd', 'i', 's', 'k', 216 1.1.2.2 yamt 0x0d, 0x0a, 217 1.1.2.2 yamt 'P', 'r', 'e', 's', 's', ' ', 'a', 'n', 218 1.1.2.2 yamt 'y', ' ', 'k', 'e', 'y', ' ', 't', 'o', 219 1.1.2.2 yamt ' ', 'r', 'e', 'b', 'o', 'o', 't', 220 1.1.2.2 yamt 0x0d, 0x0a, 221 1.1.2.2 yamt 0 222 1.1.2.2 yamt }; 223 1.1.2.2 yamt 224 1.1.2.2 yamt static int got_siginfo = 0; /* received a SIGINFO */ 225 1.1.2.2 yamt 226 1.1.2.2 yamt static int check_mounted(const char *, mode_t); 227 1.1.2.2 yamt static int getstdfmt(const char *, struct bpb *); 228 1.1.2.2 yamt static int getbpbinfo(int, const char *, const char *, int, struct bpb *, int); 229 1.1.2.2 yamt static void print_bpb(struct bpb *); 230 1.1.2.2 yamt static int ckgeom(const char *, u_int, const char *); 231 1.1.2.2 yamt static int oklabel(const char *); 232 1.1.2.2 yamt static void mklabel(u_int8_t *, const char *); 233 1.1.2.2 yamt static void setstr(u_int8_t *, const char *, size_t); 234 1.1.2.2 yamt static void infohandler(int sig); 235 1.1.2.2 yamt 236 1.1.2.2 yamt int 237 1.1.2.2 yamt mkfs_msdos(const char *fname, const char *dtype, const struct msdos_options *op) 238 1.1.2.2 yamt { 239 1.1.2.2 yamt char buf[MAXPATHLEN]; 240 1.1.2.2 yamt struct stat sb; 241 1.1.2.2 yamt struct timeval tv; 242 1.1.2.2 yamt struct bpb bpb; 243 1.1.2.2 yamt struct tm *tm; 244 1.1.2.2 yamt struct bs *bs; 245 1.1.2.2 yamt struct bsbpb *bsbpb; 246 1.1.2.2 yamt struct bsxbpb *bsxbpb; 247 1.1.2.2 yamt struct bsx *bsx; 248 1.1.2.2 yamt struct de *de; 249 1.1.2.2 yamt u_int8_t *img; 250 1.1.2.2 yamt const char *bname; 251 1.1.2.2 yamt ssize_t n; 252 1.1.2.2 yamt time_t now; 253 1.1.2.2 yamt u_int bss, rds, cls, dir, lsn, x, x1, x2; 254 1.1.2.2 yamt int ch, fd, fd1; 255 1.1.2.2 yamt struct msdos_options o = *op; 256 1.1.2.2 yamt 257 1.1.2.2 yamt if (o.block_size && o.sectors_per_cluster) { 258 1.1.2.2 yamt warnx("Cannot specify both block size and sectors per cluster"); 259 1.1.2.2 yamt return -1; 260 1.1.2.2 yamt } 261 1.1.2.2 yamt if (strlen(o.OEM_string) > 8) { 262 1.1.2.2 yamt warnx("%s: bad OEM string", o.OEM_string); 263 1.1.2.2 yamt return -1; 264 1.1.2.2 yamt } 265 1.1.2.2 yamt if (o.create_size) { 266 1.1.2.2 yamt off_t pos; 267 1.1.2.2 yamt if (o.no_create) { 268 1.1.2.2 yamt warnx("create (-C) is incompatible with -N"); 269 1.1.2.2 yamt return -1; 270 1.1.2.2 yamt } 271 1.1.2.2 yamt fd = open(fname, O_RDWR | O_CREAT | O_TRUNC, 0644); 272 1.1.2.2 yamt if (fd == -1) { 273 1.1.2.2 yamt warnx("failed to create %s", fname); 274 1.1.2.2 yamt return -1; 275 1.1.2.2 yamt } 276 1.1.2.2 yamt pos = lseek(fd, o.create_size - 1, SEEK_SET); 277 1.1.2.2 yamt if (write(fd, "\0", 1) != 1) { 278 1.1.2.2 yamt warn("failed to set file size"); 279 1.1.2.2 yamt return -1; 280 1.1.2.2 yamt } 281 1.1.2.2 yamt pos = lseek(fd, 0, SEEK_SET); 282 1.1.2.2 yamt } else if ((fd = open(fname, o.no_create ? O_RDONLY : O_RDWR)) == -1 || 283 1.1.2.2 yamt fstat(fd, &sb)) 284 1.1.2.2 yamt warn("%s", fname); 285 1.1.2.2 yamt return -1; 286 1.1.2.2 yamt if (!o.no_create) 287 1.1.2.2 yamt if (check_mounted(fname, sb.st_mode) == -1) 288 1.1.2.2 yamt return -1; 289 1.1.2.2 yamt if (!S_ISCHR(sb.st_mode) && !o.create_size) { 290 1.1.2.2 yamt warnx("warning, %s is not a character device", fname); 291 1.1.2.2 yamt return -1; 292 1.1.2.2 yamt } 293 1.1.2.2 yamt if (o.offset && o.offset != lseek(fd, o.offset, SEEK_SET)) { 294 1.1.2.2 yamt warnx("cannot seek to %jd", (intmax_t)o.offset); 295 1.1.2.2 yamt return -1; 296 1.1.2.2 yamt } 297 1.1.2.2 yamt memset(&bpb, 0, sizeof(bpb)); 298 1.1.2.2 yamt if (o.floppy) { 299 1.1.2.2 yamt if (getstdfmt(o.floppy, &bpb) == -1) 300 1.1.2.2 yamt return -1; 301 1.1.2.2 yamt bpb.bsec = bpb.sec; 302 1.1.2.2 yamt bpb.sec = 0; 303 1.1.2.2 yamt bpb.bspf = bpb.spf; 304 1.1.2.2 yamt bpb.spf = 0; 305 1.1.2.2 yamt } 306 1.1.2.2 yamt if (o.drive_heads) 307 1.1.2.2 yamt bpb.hds = o.drive_heads; 308 1.1.2.2 yamt if (o.sectors_per_track) 309 1.1.2.2 yamt bpb.spt = o.sectors_per_track; 310 1.1.2.2 yamt if (o.bytes_per_sector) 311 1.1.2.2 yamt bpb.bps = o.bytes_per_sector; 312 1.1.2.2 yamt if (o.size) 313 1.1.2.2 yamt bpb.bsec = o.size; 314 1.1.2.2 yamt if (o.hidden_sectors_set) 315 1.1.2.2 yamt bpb.hid = o.hidden_sectors; 316 1.1.2.2 yamt if (!(o.floppy || (o.drive_heads && o.sectors_per_track && 317 1.1.2.2 yamt o.bytes_per_sector && o.size && o.hidden_sectors_set))) { 318 1.1.2.2 yamt if (getbpbinfo(fd, fname, dtype, o.hidden_sectors_set, &bpb, 319 1.1.2.2 yamt o.create_size != 0) == -1) 320 1.1.2.2 yamt return -1; 321 1.1.2.2 yamt bpb.bsec -= (o.offset / bpb.bps); 322 1.1.2.2 yamt if (bpb.spc == 0) { /* set defaults */ 323 1.1.2.2 yamt if (bpb.bsec <= 6000) /* about 3MB -> 512 bytes */ 324 1.1.2.2 yamt bpb.spc = 1; 325 1.1.2.2 yamt else if (bpb.bsec <= (1<<17)) /* 64M -> 4k */ 326 1.1.2.2 yamt bpb.spc = 8; 327 1.1.2.2 yamt else if (bpb.bsec <= (1<<19)) /* 256M -> 8k */ 328 1.1.2.2 yamt bpb.spc = 16; 329 1.1.2.2 yamt else if (bpb.bsec <= (1<<21)) /* 1G -> 16k */ 330 1.1.2.2 yamt bpb.spc = 32; 331 1.1.2.2 yamt else 332 1.1.2.2 yamt bpb.spc = 64; /* otherwise 32k */ 333 1.1.2.2 yamt } 334 1.1.2.2 yamt } 335 1.1.2.2 yamt 336 1.1.2.2 yamt if (!oklabel(o.volume_label)) { 337 1.1.2.2 yamt warnx("%s: bad volume label", o.volume_label); 338 1.1.2.2 yamt return -1; 339 1.1.2.2 yamt } 340 1.1.2.2 yamt 341 1.1.2.2 yamt switch (o.fat_type) { 342 1.1.2.2 yamt case 0: 343 1.1.2.2 yamt if (o.floppy) 344 1.1.2.2 yamt o.fat_type = 12; 345 1.1.2.2 yamt else if (!o.directory_entries && (o.info_sector || o.backup_sector)) 346 1.1.2.2 yamt o.fat_type = 32; 347 1.1.2.2 yamt break; 348 1.1.2.2 yamt case 12: 349 1.1.2.2 yamt case 16: 350 1.1.2.2 yamt if (o.info_sector) { 351 1.1.2.2 yamt warnx("Cannot specify info sector with FAT%u", o.fat_type); 352 1.1.2.2 yamt return -1; 353 1.1.2.2 yamt } 354 1.1.2.2 yamt if (o.backup_sector) { 355 1.1.2.2 yamt warnx("Cannot specify backup sector with FAT%u", o.fat_type); 356 1.1.2.2 yamt return -1; 357 1.1.2.2 yamt } 358 1.1.2.2 yamt break; 359 1.1.2.2 yamt case 32: 360 1.1.2.2 yamt if (o.directory_entries) { 361 1.1.2.2 yamt warnx("Cannot specify directory entries with FAT32"); 362 1.1.2.2 yamt return -1; 363 1.1.2.2 yamt } 364 1.1.2.2 yamt break; 365 1.1.2.2 yamt default: 366 1.1.2.2 yamt warnx("%d: bad FAT type", o.fat_type); 367 1.1.2.2 yamt return -1; 368 1.1.2.2 yamt } 369 1.1.2.2 yamt if (!powerof2(bpb.bps)) { 370 1.1.2.2 yamt warnx("bytes/sector (%u) is not a power of 2", bpb.bps); 371 1.1.2.2 yamt return -1; 372 1.1.2.2 yamt } 373 1.1.2.2 yamt if (bpb.bps < MINBPS) { 374 1.1.2.2 yamt warnx("bytes/sector (%u) is too small; minimum is %u", 375 1.1.2.2 yamt bpb.bps, MINBPS); 376 1.1.2.2 yamt return -1; 377 1.1.2.2 yamt } 378 1.1.2.2 yamt 379 1.1.2.2 yamt if (o.floppy && o.fat_type == 32) 380 1.1.2.2 yamt bpb.rde = 0; 381 1.1.2.2 yamt if (o.block_size) { 382 1.1.2.2 yamt if (!powerof2(o.block_size)) { 383 1.1.2.2 yamt warnx("block size (%u) is not a power of 2", o.block_size); 384 1.1.2.2 yamt return -1; 385 1.1.2.2 yamt } 386 1.1.2.2 yamt if (o.block_size < bpb.bps) { 387 1.1.2.2 yamt warnx("block size (%u) is too small; minimum is %u", 388 1.1.2.2 yamt o.block_size, bpb.bps); 389 1.1.2.2 yamt return -1; 390 1.1.2.2 yamt } 391 1.1.2.2 yamt if (o.block_size > bpb.bps * MAXSPC) { 392 1.1.2.2 yamt warnx("block size (%u) is too large; maximum is %u", 393 1.1.2.2 yamt o.block_size, bpb.bps * MAXSPC); 394 1.1.2.2 yamt return -1; 395 1.1.2.2 yamt } 396 1.1.2.2 yamt bpb.spc = o.block_size / bpb.bps; 397 1.1.2.2 yamt } 398 1.1.2.2 yamt if (o.sectors_per_cluster) { 399 1.1.2.2 yamt if (!powerof2(o.sectors_per_cluster)) { 400 1.1.2.2 yamt warnx("sectors/cluster (%u) is not a power of 2", 401 1.1.2.2 yamt o.sectors_per_cluster); 402 1.1.2.2 yamt return -1; 403 1.1.2.2 yamt } 404 1.1.2.2 yamt bpb.spc = o.sectors_per_cluster; 405 1.1.2.2 yamt } 406 1.1.2.2 yamt if (o.reserved_sectors) 407 1.1.2.2 yamt bpb.res = o.reserved_sectors; 408 1.1.2.2 yamt if (o.num_FAT) { 409 1.1.2.2 yamt if (o.num_FAT > MAXNFT) { 410 1.1.2.2 yamt warnx("number of FATs (%u) is too large; maximum is %u", 411 1.1.2.2 yamt o.num_FAT, MAXNFT); 412 1.1.2.2 yamt return -1; 413 1.1.2.2 yamt } 414 1.1.2.2 yamt bpb.nft = o.num_FAT; 415 1.1.2.2 yamt } 416 1.1.2.2 yamt if (o.directory_entries) 417 1.1.2.2 yamt bpb.rde = o.directory_entries; 418 1.1.2.2 yamt if (o.media_descriptor_set) { 419 1.1.2.2 yamt if (o.media_descriptor < 0xf0) { 420 1.1.2.2 yamt warnx("illegal media descriptor (%#x)", o.media_descriptor); 421 1.1.2.2 yamt return -1; 422 1.1.2.2 yamt } 423 1.1.2.2 yamt bpb.mid = o.media_descriptor; 424 1.1.2.2 yamt } 425 1.1.2.2 yamt if (o.sectors_per_fat) 426 1.1.2.2 yamt bpb.bspf = o.sectors_per_fat; 427 1.1.2.2 yamt if (o.info_sector) 428 1.1.2.2 yamt bpb.infs = o.info_sector; 429 1.1.2.2 yamt if (o.backup_sector) 430 1.1.2.2 yamt bpb.bkbs = o.backup_sector; 431 1.1.2.2 yamt bss = 1; 432 1.1.2.2 yamt bname = NULL; 433 1.1.2.2 yamt fd1 = -1; 434 1.1.2.2 yamt if (o.bootstrap) { 435 1.1.2.2 yamt bname = o.bootstrap; 436 1.1.2.2 yamt if (!strchr(bname, '/')) { 437 1.1.2.2 yamt snprintf(buf, sizeof(buf), "/boot/%s", bname); 438 1.1.2.2 yamt if (!(bname = strdup(buf))) 439 1.1.2.2 yamt err(1, NULL); 440 1.1.2.2 yamt } 441 1.1.2.2 yamt if ((fd1 = open(bname, O_RDONLY)) == -1 || fstat(fd1, &sb)) { 442 1.1.2.2 yamt warn("%s", bname); 443 1.1.2.2 yamt return -1; 444 1.1.2.2 yamt } 445 1.1.2.2 yamt if (!S_ISREG(sb.st_mode) || sb.st_size % bpb.bps || 446 1.1.2.2 yamt sb.st_size < bpb.bps || sb.st_size > bpb.bps * MAXU16) { 447 1.1.2.2 yamt warnx("%s: inappropriate file type or format", bname); 448 1.1.2.2 yamt return -1; 449 1.1.2.2 yamt } 450 1.1.2.2 yamt bss = sb.st_size / bpb.bps; 451 1.1.2.2 yamt } 452 1.1.2.2 yamt if (!bpb.nft) 453 1.1.2.2 yamt bpb.nft = 2; 454 1.1.2.2 yamt if (!o.fat_type) { 455 1.1.2.2 yamt if (bpb.bsec < (bpb.res ? bpb.res : bss) + 456 1.1.2.2 yamt howmany((RESFTE + (bpb.spc ? MINCLS16 : MAXCLS12 + 1)) * 457 1.1.2.2 yamt ((bpb.spc ? 16 : 12) / BPN), bpb.bps * NPB) * 458 1.1.2.2 yamt bpb.nft + 459 1.1.2.2 yamt howmany(bpb.rde ? bpb.rde : DEFRDE, 460 1.1.2.2 yamt bpb.bps / sizeof(struct de)) + 461 1.1.2.2 yamt (bpb.spc ? MINCLS16 : MAXCLS12 + 1) * 462 1.1.2.2 yamt (bpb.spc ? bpb.spc : howmany(DEFBLK, bpb.bps))) 463 1.1.2.2 yamt o.fat_type = 12; 464 1.1.2.2 yamt else if (bpb.rde || bpb.bsec < 465 1.1.2.2 yamt (bpb.res ? bpb.res : bss) + 466 1.1.2.2 yamt howmany((RESFTE + MAXCLS16) * 2, bpb.bps) * bpb.nft + 467 1.1.2.2 yamt howmany(DEFRDE, bpb.bps / sizeof(struct de)) + 468 1.1.2.2 yamt (MAXCLS16 + 1) * 469 1.1.2.2 yamt (bpb.spc ? bpb.spc : howmany(8192, bpb.bps))) 470 1.1.2.2 yamt o.fat_type = 16; 471 1.1.2.2 yamt else 472 1.1.2.2 yamt o.fat_type = 32; 473 1.1.2.2 yamt } 474 1.1.2.2 yamt x = bss; 475 1.1.2.2 yamt if (o.fat_type == 32) { 476 1.1.2.2 yamt if (!bpb.infs) { 477 1.1.2.2 yamt if (x == MAXU16 || x == bpb.bkbs) { 478 1.1.2.2 yamt warnx("no room for info sector"); 479 1.1.2.2 yamt return -1; 480 1.1.2.2 yamt } 481 1.1.2.2 yamt bpb.infs = x; 482 1.1.2.2 yamt } 483 1.1.2.2 yamt if (bpb.infs != MAXU16 && x <= bpb.infs) 484 1.1.2.2 yamt x = bpb.infs + 1; 485 1.1.2.2 yamt if (!bpb.bkbs) { 486 1.1.2.2 yamt if (x == MAXU16) { 487 1.1.2.2 yamt warnx("no room for backup sector"); 488 1.1.2.2 yamt return -1; 489 1.1.2.2 yamt } 490 1.1.2.2 yamt bpb.bkbs = x; 491 1.1.2.2 yamt } else if (bpb.bkbs != MAXU16 && bpb.bkbs == bpb.infs) { 492 1.1.2.2 yamt warnx("backup sector would overwrite info sector"); 493 1.1.2.2 yamt return -1; 494 1.1.2.2 yamt } 495 1.1.2.2 yamt if (bpb.bkbs != MAXU16 && x <= bpb.bkbs) 496 1.1.2.2 yamt x = bpb.bkbs + 1; 497 1.1.2.2 yamt } 498 1.1.2.2 yamt if (!bpb.res) 499 1.1.2.2 yamt bpb.res = o.fat_type == 32 ? MAX(x, MAX(16384 / bpb.bps, 4)) : x; 500 1.1.2.2 yamt else if (bpb.res < x) { 501 1.1.2.2 yamt warnx("too few reserved sectors (need %d have %d)", x, bpb.res); 502 1.1.2.2 yamt return -1; 503 1.1.2.2 yamt } 504 1.1.2.2 yamt if (o.fat_type != 32 && !bpb.rde) 505 1.1.2.2 yamt bpb.rde = DEFRDE; 506 1.1.2.2 yamt rds = howmany(bpb.rde, bpb.bps / sizeof(struct de)); 507 1.1.2.2 yamt if (!bpb.spc) 508 1.1.2.2 yamt for (bpb.spc = howmany(o.fat_type == 16 ? DEFBLK16 : DEFBLK, bpb.bps); 509 1.1.2.2 yamt bpb.spc < MAXSPC && 510 1.1.2.2 yamt bpb.res + 511 1.1.2.2 yamt howmany((RESFTE + maxcls(o.fat_type)) * (o.fat_type / BPN), 512 1.1.2.2 yamt bpb.bps * NPB) * bpb.nft + 513 1.1.2.2 yamt rds + 514 1.1.2.2 yamt (u_int64_t)(maxcls(o.fat_type) + 1) * bpb.spc <= bpb.bsec; 515 1.1.2.2 yamt bpb.spc <<= 1); 516 1.1.2.2 yamt if (o.fat_type != 32 && bpb.bspf > MAXU16) { 517 1.1.2.2 yamt warnx("too many sectors/FAT for FAT12/16"); 518 1.1.2.2 yamt return -1; 519 1.1.2.2 yamt } 520 1.1.2.2 yamt x1 = bpb.res + rds; 521 1.1.2.2 yamt x = bpb.bspf ? bpb.bspf : 1; 522 1.1.2.2 yamt if (x1 + (u_int64_t)x * bpb.nft > bpb.bsec) { 523 1.1.2.2 yamt warnx("meta data exceeds file system size"); 524 1.1.2.2 yamt return -1; 525 1.1.2.2 yamt } 526 1.1.2.2 yamt x1 += x * bpb.nft; 527 1.1.2.2 yamt x = (u_int64_t)(bpb.bsec - x1) * bpb.bps * NPB / 528 1.1.2.2 yamt (bpb.spc * bpb.bps * NPB + o.fat_type / BPN * bpb.nft); 529 1.1.2.2 yamt x2 = howmany((RESFTE + MIN(x, maxcls(o.fat_type))) * (o.fat_type / BPN), 530 1.1.2.2 yamt bpb.bps * NPB); 531 1.1.2.2 yamt if (!bpb.bspf) { 532 1.1.2.2 yamt bpb.bspf = x2; 533 1.1.2.2 yamt x1 += (bpb.bspf - 1) * bpb.nft; 534 1.1.2.2 yamt } 535 1.1.2.2 yamt cls = (bpb.bsec - x1) / bpb.spc; 536 1.1.2.2 yamt x = (u_int64_t)bpb.bspf * bpb.bps * NPB / (o.fat_type / BPN) - RESFTE; 537 1.1.2.2 yamt if (cls > x) 538 1.1.2.2 yamt cls = x; 539 1.1.2.2 yamt if (bpb.bspf < x2) { 540 1.1.2.2 yamt warnx("warning: sectors/FAT limits file system to %u clusters", 541 1.1.2.2 yamt cls); 542 1.1.2.2 yamt return -1; 543 1.1.2.2 yamt } 544 1.1.2.2 yamt if (cls < mincls(o.fat_type)) { 545 1.1.2.2 yamt warnx("%u clusters too few clusters for FAT%u, need %u", cls, 546 1.1.2.2 yamt o.fat_type, mincls(o.fat_type)); 547 1.1.2.2 yamt return -1; 548 1.1.2.2 yamt } 549 1.1.2.2 yamt if (cls > maxcls(o.fat_type)) { 550 1.1.2.2 yamt cls = maxcls(o.fat_type); 551 1.1.2.2 yamt bpb.bsec = x1 + (cls + 1) * bpb.spc - 1; 552 1.1.2.2 yamt warnx("warning: FAT type limits file system to %u sectors", 553 1.1.2.2 yamt bpb.bsec); 554 1.1.2.2 yamt return -1; 555 1.1.2.2 yamt } 556 1.1.2.2 yamt printf("%s: %u sector%s in %u FAT%u cluster%s " 557 1.1.2.2 yamt "(%u bytes/cluster)\n", fname, cls * bpb.spc, 558 1.1.2.2 yamt cls * bpb.spc == 1 ? "" : "s", cls, o.fat_type, 559 1.1.2.2 yamt cls == 1 ? "" : "s", bpb.bps * bpb.spc); 560 1.1.2.2 yamt if (!bpb.mid) 561 1.1.2.2 yamt bpb.mid = !bpb.hid ? 0xf0 : 0xf8; 562 1.1.2.2 yamt if (o.fat_type == 32) 563 1.1.2.2 yamt bpb.rdcl = RESFTE; 564 1.1.2.2 yamt if (bpb.hid + bpb.bsec <= MAXU16) { 565 1.1.2.2 yamt bpb.sec = bpb.bsec; 566 1.1.2.2 yamt bpb.bsec = 0; 567 1.1.2.2 yamt } 568 1.1.2.2 yamt if (o.fat_type != 32) { 569 1.1.2.2 yamt bpb.spf = bpb.bspf; 570 1.1.2.2 yamt bpb.bspf = 0; 571 1.1.2.2 yamt } 572 1.1.2.2 yamt ch = 0; 573 1.1.2.2 yamt if (o.fat_type == 12) 574 1.1.2.2 yamt ch = 1; /* 001 Primary DOS with 12 bit FAT */ 575 1.1.2.2 yamt else if (o.fat_type == 16) { 576 1.1.2.2 yamt if (bpb.bsec == 0) 577 1.1.2.2 yamt ch = 4; /* 004 Primary DOS with 16 bit FAT <32M */ 578 1.1.2.2 yamt else 579 1.1.2.2 yamt ch = 6; /* 006 Primary 'big' DOS, 16-bit FAT (> 32MB) */ 580 1.1.2.2 yamt /* 581 1.1.2.2 yamt * XXX: what about: 582 1.1.2.2 yamt * 014 DOS (16-bit FAT) - LBA 583 1.1.2.2 yamt * ? 584 1.1.2.2 yamt */ 585 1.1.2.2 yamt } else if (o.fat_type == 32) { 586 1.1.2.2 yamt ch = 11; /* 011 Primary DOS with 32 bit FAT */ 587 1.1.2.2 yamt /* 588 1.1.2.2 yamt * XXX: what about: 589 1.1.2.2 yamt * 012 Primary DOS with 32 bit FAT - LBA 590 1.1.2.2 yamt * ? 591 1.1.2.2 yamt */ 592 1.1.2.2 yamt } 593 1.1.2.2 yamt if (ch != 0) 594 1.1.2.2 yamt printf("MBR type: %d\n", ch); 595 1.1.2.2 yamt print_bpb(&bpb); 596 1.1.2.2 yamt if (!o.no_create) { 597 1.1.2.2 yamt gettimeofday(&tv, NULL); 598 1.1.2.2 yamt now = tv.tv_sec; 599 1.1.2.2 yamt tm = localtime(&now); 600 1.1.2.2 yamt if (!(img = malloc(bpb.bps))) 601 1.1.2.2 yamt err(1, NULL); 602 1.1.2.2 yamt dir = bpb.res + (bpb.spf ? bpb.spf : bpb.bspf) * bpb.nft; 603 1.1.2.2 yamt signal(SIGINFO, infohandler); 604 1.1.2.2 yamt for (lsn = 0; lsn < dir + (o.fat_type == 32 ? bpb.spc : rds); lsn++) { 605 1.1.2.2 yamt if (got_siginfo) { 606 1.1.2.2 yamt fprintf(stderr,"%s: writing sector %u of %u (%u%%)\n", 607 1.1.2.2 yamt fname,lsn,(dir + (o.fat_type == 32 ? bpb.spc : rds)), 608 1.1.2.2 yamt (lsn*100)/(dir + (o.fat_type == 32 ? bpb.spc : rds))); 609 1.1.2.2 yamt got_siginfo = 0; 610 1.1.2.2 yamt } 611 1.1.2.2 yamt x = lsn; 612 1.1.2.2 yamt if (o.bootstrap && 613 1.1.2.2 yamt o.fat_type == 32 && bpb.bkbs != MAXU16 && 614 1.1.2.2 yamt bss <= bpb.bkbs && x >= bpb.bkbs) { 615 1.1.2.2 yamt x -= bpb.bkbs; 616 1.1.2.2 yamt if (!x && lseek(fd1, o.offset, SEEK_SET)) { 617 1.1.2.2 yamt warn("%s", bname); 618 1.1.2.2 yamt return -1; 619 1.1.2.2 yamt } 620 1.1.2.2 yamt } 621 1.1.2.2 yamt if (o.bootstrap && x < bss) { 622 1.1.2.2 yamt if ((n = read(fd1, img, bpb.bps)) == -1) { 623 1.1.2.2 yamt warn("%s", bname); 624 1.1.2.2 yamt return -1; 625 1.1.2.2 yamt } 626 1.1.2.2 yamt if ((size_t)n != bpb.bps) { 627 1.1.2.2 yamt warnx("%s: can't read sector %u", bname, x); 628 1.1.2.2 yamt return -1; 629 1.1.2.2 yamt } 630 1.1.2.2 yamt } else 631 1.1.2.2 yamt memset(img, 0, bpb.bps); 632 1.1.2.2 yamt if (!lsn || 633 1.1.2.2 yamt (o.fat_type == 32 && bpb.bkbs != MAXU16 && lsn == bpb.bkbs)) { 634 1.1.2.2 yamt x1 = sizeof(struct bs); 635 1.1.2.2 yamt bsbpb = (struct bsbpb *)(img + x1); 636 1.1.2.2 yamt mk2(bsbpb->bps, bpb.bps); 637 1.1.2.2 yamt mk1(bsbpb->spc, bpb.spc); 638 1.1.2.2 yamt mk2(bsbpb->res, bpb.res); 639 1.1.2.2 yamt mk1(bsbpb->nft, bpb.nft); 640 1.1.2.2 yamt mk2(bsbpb->rde, bpb.rde); 641 1.1.2.2 yamt mk2(bsbpb->sec, bpb.sec); 642 1.1.2.2 yamt mk1(bsbpb->mid, bpb.mid); 643 1.1.2.2 yamt mk2(bsbpb->spf, bpb.spf); 644 1.1.2.2 yamt mk2(bsbpb->spt, bpb.spt); 645 1.1.2.2 yamt mk2(bsbpb->hds, bpb.hds); 646 1.1.2.2 yamt mk4(bsbpb->hid, bpb.hid); 647 1.1.2.2 yamt mk4(bsbpb->bsec, bpb.bsec); 648 1.1.2.2 yamt x1 += sizeof(struct bsbpb); 649 1.1.2.2 yamt if (o.fat_type == 32) { 650 1.1.2.2 yamt bsxbpb = (struct bsxbpb *)(img + x1); 651 1.1.2.2 yamt mk4(bsxbpb->bspf, bpb.bspf); 652 1.1.2.2 yamt mk2(bsxbpb->xflg, 0); 653 1.1.2.2 yamt mk2(bsxbpb->vers, 0); 654 1.1.2.2 yamt mk4(bsxbpb->rdcl, bpb.rdcl); 655 1.1.2.2 yamt mk2(bsxbpb->infs, bpb.infs); 656 1.1.2.2 yamt mk2(bsxbpb->bkbs, bpb.bkbs); 657 1.1.2.2 yamt x1 += sizeof(struct bsxbpb); 658 1.1.2.2 yamt } 659 1.1.2.2 yamt bsx = (struct bsx *)(img + x1); 660 1.1.2.2 yamt mk1(bsx->sig, 0x29); 661 1.1.2.2 yamt if (o.volume_id_set) 662 1.1.2.2 yamt x = o.volume_id; 663 1.1.2.2 yamt else 664 1.1.2.2 yamt x = (((u_int)(1 + tm->tm_mon) << 8 | 665 1.1.2.2 yamt (u_int)tm->tm_mday) + 666 1.1.2.2 yamt ((u_int)tm->tm_sec << 8 | 667 1.1.2.2 yamt (u_int)(tv.tv_usec / 10))) << 16 | 668 1.1.2.2 yamt ((u_int)(1900 + tm->tm_year) + 669 1.1.2.2 yamt ((u_int)tm->tm_hour << 8 | 670 1.1.2.2 yamt (u_int)tm->tm_min)); 671 1.1.2.2 yamt mk4(bsx->volid, x); 672 1.1.2.2 yamt mklabel(bsx->label, o.volume_label ? o.volume_label : "NO NAME"); 673 1.1.2.2 yamt snprintf(buf, sizeof(buf), "FAT%u", o.fat_type); 674 1.1.2.2 yamt setstr(bsx->type, buf, sizeof(bsx->type)); 675 1.1.2.2 yamt if (!o.bootstrap) { 676 1.1.2.2 yamt x1 += sizeof(struct bsx); 677 1.1.2.2 yamt bs = (struct bs *)img; 678 1.1.2.2 yamt mk1(bs->jmp[0], 0xeb); 679 1.1.2.2 yamt mk1(bs->jmp[1], x1 - 2); 680 1.1.2.2 yamt mk1(bs->jmp[2], 0x90); 681 1.1.2.2 yamt setstr(bs->oem, o.OEM_string ? o.OEM_string : "NetBSD", 682 1.1.2.2 yamt sizeof(bs->oem)); 683 1.1.2.2 yamt memcpy(img + x1, bootcode, sizeof(bootcode)); 684 1.1.2.2 yamt mk2(img + MINBPS - 2, DOSMAGIC); 685 1.1.2.2 yamt } 686 1.1.2.2 yamt } else if (o.fat_type == 32 && bpb.infs != MAXU16 && 687 1.1.2.2 yamt (lsn == bpb.infs || 688 1.1.2.2 yamt (bpb.bkbs != MAXU16 && 689 1.1.2.2 yamt lsn == bpb.bkbs + bpb.infs))) { 690 1.1.2.2 yamt mk4(img, 0x41615252); 691 1.1.2.2 yamt mk4(img + MINBPS - 28, 0x61417272); 692 1.1.2.2 yamt mk4(img + MINBPS - 24, 0xffffffff); 693 1.1.2.2 yamt mk4(img + MINBPS - 20, bpb.rdcl); 694 1.1.2.2 yamt mk2(img + MINBPS - 2, DOSMAGIC); 695 1.1.2.2 yamt } else if (lsn >= bpb.res && lsn < dir && 696 1.1.2.2 yamt !((lsn - bpb.res) % 697 1.1.2.2 yamt (bpb.spf ? bpb.spf : bpb.bspf))) { 698 1.1.2.2 yamt mk1(img[0], bpb.mid); 699 1.1.2.2 yamt for (x = 1; x < o.fat_type * (o.fat_type == 32 ? 3U : 2U) / 8U; x++) 700 1.1.2.2 yamt mk1(img[x], o.fat_type == 32 && x % 4 == 3 ? 0x0f : 0xff); 701 1.1.2.2 yamt } else if (lsn == dir && o.volume_label) { 702 1.1.2.2 yamt de = (struct de *)img; 703 1.1.2.2 yamt mklabel(de->namext, o.volume_label); 704 1.1.2.2 yamt mk1(de->attr, 050); 705 1.1.2.2 yamt x = (u_int)tm->tm_hour << 11 | 706 1.1.2.2 yamt (u_int)tm->tm_min << 5 | 707 1.1.2.2 yamt (u_int)tm->tm_sec >> 1; 708 1.1.2.2 yamt mk2(de->time, x); 709 1.1.2.2 yamt x = (u_int)(tm->tm_year - 80) << 9 | 710 1.1.2.2 yamt (u_int)(tm->tm_mon + 1) << 5 | 711 1.1.2.2 yamt (u_int)tm->tm_mday; 712 1.1.2.2 yamt mk2(de->date, x); 713 1.1.2.2 yamt } 714 1.1.2.2 yamt if ((n = write(fd, img, bpb.bps)) == -1) { 715 1.1.2.2 yamt warn("%s", fname); 716 1.1.2.2 yamt return -1; 717 1.1.2.2 yamt } 718 1.1.2.2 yamt if ((size_t)n != bpb.bps) { 719 1.1.2.2 yamt warnx("%s: can't write sector %u", fname, lsn); 720 1.1.2.2 yamt return -1; 721 1.1.2.2 yamt } 722 1.1.2.2 yamt } 723 1.1.2.2 yamt } 724 1.1.2.2 yamt return 0; 725 1.1.2.2 yamt } 726 1.1.2.2 yamt 727 1.1.2.2 yamt /* 728 1.1.2.2 yamt * return -1 with error if file system is mounted. 729 1.1.2.2 yamt */ 730 1.1.2.2 yamt static int 731 1.1.2.2 yamt check_mounted(const char *fname, mode_t mode) 732 1.1.2.2 yamt { 733 1.1.2.2 yamt struct statvfs *mp; 734 1.1.2.2 yamt const char *s1, *s2; 735 1.1.2.2 yamt size_t len; 736 1.1.2.2 yamt int n, r; 737 1.1.2.2 yamt 738 1.1.2.2 yamt if (!(n = getmntinfo(&mp, MNT_NOWAIT))) { 739 1.1.2.2 yamt warn("getmntinfo"); 740 1.1.2.2 yamt return -1; 741 1.1.2.2 yamt } 742 1.1.2.2 yamt len = strlen(_PATH_DEV); 743 1.1.2.2 yamt s1 = fname; 744 1.1.2.2 yamt if (!strncmp(s1, _PATH_DEV, len)) 745 1.1.2.2 yamt s1 += len; 746 1.1.2.2 yamt r = S_ISCHR(mode) && s1 != fname && *s1 == 'r'; 747 1.1.2.2 yamt for (; n--; mp++) { 748 1.1.2.2 yamt s2 = mp->f_mntfromname; 749 1.1.2.2 yamt if (!strncmp(s2, _PATH_DEV, len)) 750 1.1.2.2 yamt s2 += len; 751 1.1.2.2 yamt if ((r && s2 != mp->f_mntfromname && !strcmp(s1 + 1, s2)) || 752 1.1.2.2 yamt !strcmp(s1, s2)) { 753 1.1.2.2 yamt warnx("%s is mounted on %s", fname, mp->f_mntonname); 754 1.1.2.2 yamt return -1; 755 1.1.2.2 yamt } 756 1.1.2.2 yamt } 757 1.1.2.2 yamt return 0; 758 1.1.2.2 yamt } 759 1.1.2.2 yamt 760 1.1.2.2 yamt /* 761 1.1.2.2 yamt * Get a standard format. 762 1.1.2.2 yamt */ 763 1.1.2.2 yamt static int 764 1.1.2.2 yamt getstdfmt(const char *fmt, struct bpb *bpb) 765 1.1.2.2 yamt { 766 1.1.2.2 yamt u_int x, i; 767 1.1.2.2 yamt 768 1.1.2.2 yamt x = sizeof(stdfmt) / sizeof(stdfmt[0]); 769 1.1.2.2 yamt for (i = 0; i < x && strcmp(fmt, stdfmt[i].name); i++); 770 1.1.2.2 yamt if (i == x) { 771 1.1.2.2 yamt warnx("%s: unknown standard format", fmt); 772 1.1.2.2 yamt return -1; 773 1.1.2.2 yamt } 774 1.1.2.2 yamt *bpb = stdfmt[i].bpb; 775 1.1.2.2 yamt return 0; 776 1.1.2.2 yamt } 777 1.1.2.2 yamt 778 1.1.2.2 yamt /* 779 1.1.2.2 yamt * Get disk slice, partition, and geometry information. 780 1.1.2.2 yamt */ 781 1.1.2.2 yamt static int 782 1.1.2.2 yamt getbpbinfo(int fd, const char *fname, const char *dtype, int iflag, 783 1.1.2.2 yamt struct bpb *bpb, int create) 784 1.1.2.2 yamt { 785 1.1.2.2 yamt struct disk_geom geo; 786 1.1.2.2 yamt struct dkwedge_info dkw; 787 1.1.2.2 yamt const char *s1, *s2; 788 1.1.2.2 yamt int part; 789 1.1.2.2 yamt int maxpartitions; 790 1.1.2.2 yamt 791 1.1.2.2 yamt part = -1; 792 1.1.2.2 yamt s1 = fname; 793 1.1.2.2 yamt if ((s2 = strrchr(s1, '/'))) 794 1.1.2.2 yamt s1 = s2 + 1; 795 1.1.2.2 yamt for (s2 = s1; *s2 && !isdigit((unsigned char)*s2); s2++); 796 1.1.2.2 yamt if (!*s2 || s2 == s1) 797 1.1.2.2 yamt s2 = NULL; 798 1.1.2.2 yamt else 799 1.1.2.2 yamt while (isdigit((unsigned char)*++s2)); 800 1.1.2.2 yamt s1 = s2; 801 1.1.2.2 yamt 802 1.1.2.2 yamt maxpartitions = getmaxpartitions(); 803 1.1.2.2 yamt 804 1.1.2.2 yamt if (s2 && *s2 >= 'a' && *s2 <= 'a' + maxpartitions - 1) { 805 1.1.2.2 yamt part = *s2++ - 'a'; 806 1.1.2.2 yamt } 807 1.1.2.2 yamt if (((part != -1) && ((!iflag && part != -1) || !bpb->bsec)) || 808 1.1.2.2 yamt !bpb->bps || !bpb->spt || !bpb->hds) { 809 1.1.2.2 yamt if (create || getdiskinfo(fname, fd, NULL, &geo, &dkw) == -1) { 810 1.1.2.2 yamt struct stat st; 811 1.1.2.2 yamt 812 1.1.2.2 yamt if (fstat(fd, &st) == -1) { 813 1.1.2.2 yamt warnx("Can't get disk size for `%s'", fname); 814 1.1.2.2 yamt return -1; 815 1.1.2.2 yamt } 816 1.1.2.2 yamt /* create a fake geometry for a file image */ 817 1.1.2.2 yamt geo.dg_secsize = 512; 818 1.1.2.2 yamt geo.dg_nsectors = 63; 819 1.1.2.2 yamt geo.dg_ntracks = 255; 820 1.1.2.2 yamt dkw.dkw_size = st.st_size / geo.dg_secsize; 821 1.1.2.2 yamt } 822 1.1.2.2 yamt if (!bpb->bps) { 823 1.1.2.2 yamt if (ckgeom(fname, geo.dg_secsize, "bytes/sector") == -1) 824 1.1.2.2 yamt return -1; 825 1.1.2.2 yamt bpb->bps = geo.dg_secsize; 826 1.1.2.2 yamt } 827 1.1.2.2 yamt 828 1.1.2.2 yamt if (geo.dg_nsectors > 63) { 829 1.1.2.2 yamt /* 830 1.1.2.2 yamt * The kernel doesn't accept BPB with spt > 63. 831 1.1.2.2 yamt * (see sys/fs/msdosfs/msdosfs_vfsops.c:msdosfs_mountfs()) 832 1.1.2.2 yamt * If values taken from disklabel don't match these 833 1.1.2.2 yamt * restrictions, use popular BIOS default values instead. 834 1.1.2.2 yamt */ 835 1.1.2.2 yamt geo.dg_nsectors = 63; 836 1.1.2.2 yamt } 837 1.1.2.2 yamt if (!bpb->spt) { 838 1.1.2.2 yamt if (ckgeom(fname, geo.dg_nsectors, "sectors/track") == -1) 839 1.1.2.2 yamt return -1; 840 1.1.2.2 yamt bpb->spt = geo.dg_nsectors; 841 1.1.2.2 yamt } 842 1.1.2.2 yamt if (!bpb->hds) 843 1.1.2.2 yamt if (ckgeom(fname, geo.dg_ntracks, "drive heads") == -1) 844 1.1.2.2 yamt return -1; 845 1.1.2.2 yamt bpb->hds = geo.dg_ntracks; 846 1.1.2.2 yamt if (!bpb->bsec) 847 1.1.2.2 yamt bpb->bsec = dkw.dkw_size; 848 1.1.2.2 yamt } 849 1.1.2.2 yamt return 0; 850 1.1.2.2 yamt } 851 1.1.2.2 yamt 852 1.1.2.2 yamt /* 853 1.1.2.2 yamt * Print out BPB values. 854 1.1.2.2 yamt */ 855 1.1.2.2 yamt static void 856 1.1.2.2 yamt print_bpb(struct bpb *bpb) 857 1.1.2.2 yamt { 858 1.1.2.2 yamt printf("bps=%u spc=%u res=%u nft=%u", bpb->bps, bpb->spc, bpb->res, 859 1.1.2.2 yamt bpb->nft); 860 1.1.2.2 yamt if (bpb->rde) 861 1.1.2.2 yamt printf(" rde=%u", bpb->rde); 862 1.1.2.2 yamt if (bpb->sec) 863 1.1.2.2 yamt printf(" sec=%u", bpb->sec); 864 1.1.2.2 yamt printf(" mid=%#x", bpb->mid); 865 1.1.2.2 yamt if (bpb->spf) 866 1.1.2.2 yamt printf(" spf=%u", bpb->spf); 867 1.1.2.2 yamt printf(" spt=%u hds=%u hid=%u", bpb->spt, bpb->hds, bpb->hid); 868 1.1.2.2 yamt if (bpb->bsec) 869 1.1.2.2 yamt printf(" bsec=%u", bpb->bsec); 870 1.1.2.2 yamt if (!bpb->spf) { 871 1.1.2.2 yamt printf(" bspf=%u rdcl=%u", bpb->bspf, bpb->rdcl); 872 1.1.2.2 yamt printf(" infs="); 873 1.1.2.2 yamt printf(bpb->infs == MAXU16 ? "%#x" : "%u", bpb->infs); 874 1.1.2.2 yamt printf(" bkbs="); 875 1.1.2.2 yamt printf(bpb->bkbs == MAXU16 ? "%#x" : "%u", bpb->bkbs); 876 1.1.2.2 yamt } 877 1.1.2.2 yamt printf("\n"); 878 1.1.2.2 yamt } 879 1.1.2.2 yamt 880 1.1.2.2 yamt /* 881 1.1.2.2 yamt * Check a disk geometry value. 882 1.1.2.2 yamt */ 883 1.1.2.2 yamt static int 884 1.1.2.2 yamt ckgeom(const char *fname, u_int val, const char *msg) 885 1.1.2.2 yamt { 886 1.1.2.2 yamt if (!val) { 887 1.1.2.2 yamt warnx("%s: no default %s", fname, msg); 888 1.1.2.2 yamt return -1; 889 1.1.2.2 yamt } 890 1.1.2.2 yamt if (val > MAXU16) { 891 1.1.2.2 yamt warnx("%s: illegal %s", fname, msg); 892 1.1.2.2 yamt return -1; 893 1.1.2.2 yamt } 894 1.1.2.2 yamt return 0; 895 1.1.2.2 yamt } 896 1.1.2.2 yamt /* 897 1.1.2.2 yamt * Check a volume label. 898 1.1.2.2 yamt */ 899 1.1.2.2 yamt static int 900 1.1.2.2 yamt oklabel(const char *src) 901 1.1.2.2 yamt { 902 1.1.2.2 yamt int c, i; 903 1.1.2.2 yamt 904 1.1.2.2 yamt for (i = 0; i <= 11; i++) { 905 1.1.2.2 yamt c = (u_char)*src++; 906 1.1.2.2 yamt if (c < ' ' + !i || strchr("\"*+,./:;<=>?[\\]|", c)) 907 1.1.2.2 yamt break; 908 1.1.2.2 yamt } 909 1.1.2.2 yamt return i && !c; 910 1.1.2.2 yamt } 911 1.1.2.2 yamt 912 1.1.2.2 yamt /* 913 1.1.2.2 yamt * Make a volume label. 914 1.1.2.2 yamt */ 915 1.1.2.2 yamt static void 916 1.1.2.2 yamt mklabel(u_int8_t *dest, const char *src) 917 1.1.2.2 yamt { 918 1.1.2.2 yamt int c, i; 919 1.1.2.2 yamt 920 1.1.2.2 yamt for (i = 0; i < 11; i++) { 921 1.1.2.2 yamt c = *src ? toupper((unsigned char)*src++) : ' '; 922 1.1.2.2 yamt *dest++ = !i && c == '\xe5' ? 5 : c; 923 1.1.2.2 yamt } 924 1.1.2.2 yamt } 925 1.1.2.2 yamt 926 1.1.2.2 yamt /* 927 1.1.2.2 yamt * Copy string, padding with spaces. 928 1.1.2.2 yamt */ 929 1.1.2.2 yamt static void 930 1.1.2.2 yamt setstr(u_int8_t *dest, const char *src, size_t len) 931 1.1.2.2 yamt { 932 1.1.2.2 yamt while (len--) 933 1.1.2.2 yamt *dest++ = *src ? *src++ : ' '; 934 1.1.2.2 yamt } 935 1.1.2.2 yamt 936 1.1.2.2 yamt static void 937 1.1.2.2 yamt infohandler(int sig) 938 1.1.2.2 yamt { 939 1.1.2.2 yamt got_siginfo = 1; 940 1.1.2.2 yamt } 941
Indexes created Thu Oct 02 14:10:14 GMT 2025