diff options
Diffstat (limited to 'toolbox/mkdosfs.c')
| -rw-r--r-- | toolbox/mkdosfs.c | 849 |
1 files changed, 0 insertions, 849 deletions
diff --git a/toolbox/mkdosfs.c b/toolbox/mkdosfs.c deleted file mode 100644 index 9ba9409..0000000 --- a/toolbox/mkdosfs.c +++ /dev/null @@ -1,849 +0,0 @@ -/* $NetBSD: newfs_msdos.c,v 1.18.2.1 2005/05/01 18:44:02 tron Exp $ */ - -/* - * Copyright (c) 1998 Robert Nordier - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS - * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY - * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE - * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR - * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN - * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#define __USE_FILE_OFFSET64 - -#include <sys/cdefs.h> - -#include <sys/types.h> -#include <sys/param.h> -#ifdef __FreeBSD__ -#include <sys/diskslice.h> -#endif -#include <sys/mount.h> -#include <sys/stat.h> -#include <sys/time.h> -#include <sys/ioctl.h> - -#include <ctype.h> -#include <err.h> -#include <errno.h> -#include <fcntl.h> -#include <paths.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <time.h> -#include <unistd.h> -#ifdef __NetBSD__ -#include <disktab.h> -#include <util.h> -#endif - -#define MAXU16 0xffff /* maximum unsigned 16-bit quantity */ -#define BPN 4 /* bits per nibble */ -#define NPB 2 /* nibbles per byte */ - -#define DOSMAGIC 0xaa55 /* DOS magic number */ -#define MINBPS 128 /* minimum bytes per sector */ -#define MAXSPC 128 /* maximum sectors per cluster */ -#define MAXNFT 16 /* maximum number of FATs */ -#define DEFBLK 4096 /* default block size */ -#define DEFBLK16 2048 /* default block size FAT16 */ -#define DEFRDE 512 /* default root directory entries */ -#define RESFTE 2 /* reserved FAT entries */ -#define MINCLS12 1 /* minimum FAT12 clusters */ -#define MINCLS16 0x1000 /* minimum FAT16 clusters */ -#define MINCLS32 2 /* minimum FAT32 clusters */ -#define MAXCLS12 0xfed /* maximum FAT12 clusters */ -#define MAXCLS16 0xfff5 /* maximum FAT16 clusters */ -#define MAXCLS32 0xffffff5 /* maximum FAT32 clusters */ - -#define mincls(fat) ((fat) == 12 ? MINCLS12 : \ - (fat) == 16 ? MINCLS16 : \ - MINCLS32) - -#define maxcls(fat) ((fat) == 12 ? MAXCLS12 : \ - (fat) == 16 ? MAXCLS16 : \ - MAXCLS32) - -#define mk1(p, x) \ - (p) = (u_int8_t)(x) - -#define mk2(p, x) \ - (p)[0] = (u_int8_t)(x), \ - (p)[1] = (u_int8_t)((x) >> 010) - -#define mk4(p, x) \ - (p)[0] = (u_int8_t)(x), \ - (p)[1] = (u_int8_t)((x) >> 010), \ - (p)[2] = (u_int8_t)((x) >> 020), \ - (p)[3] = (u_int8_t)((x) >> 030) - -#define argto1(arg, lo, msg) argtou(arg, lo, 0xff, msg) -#define argto2(arg, lo, msg) argtou(arg, lo, 0xffff, msg) -#define argto4(arg, lo, msg) argtou(arg, lo, 0xffffffff, msg) -#define argtox(arg, lo, msg) argtou(arg, lo, UINT_MAX, msg) - -#ifndef MAX -#define MAX(x, y) ((x) > (y) ? (x) : (y)) -#endif -#ifndef MIN -#define MIN(x, y) ((x) < (y) ? (x) : (y)) -#endif - -static int powerof2(int x) { - int i; - for (i = 0; i < 32; i++) { - if (x & 1) { - x >>= 1; - // if x is zero, then original x was a power of two - return (x == 0); - } - x >>= 1; - } - - return 0; -} - -#ifndef howmany -#define howmany(x, y) (((x)+((y)-1))/(y)) -#endif - -#pragma pack(push, 1) -struct bs { - u_int8_t jmp[3]; /* bootstrap entry point */ - u_int8_t oem[8]; /* OEM name and version */ -}; -#define BS_SIZE 11 - -struct bsbpb { - u_int8_t bps[2]; /* bytes per sector */ - u_int8_t spc; /* sectors per cluster */ - u_int8_t res[2]; /* reserved sectors */ - u_int8_t nft; /* number of FATs */ - u_int8_t rde[2]; /* root directory entries */ - u_int8_t sec[2]; /* total sectors */ - u_int8_t mid; /* media descriptor */ - u_int8_t spf[2]; /* sectors per FAT */ - u_int8_t spt[2]; /* sectors per track */ - u_int8_t hds[2]; /* drive heads */ - u_int8_t hid[4]; /* hidden sectors */ - u_int8_t bsec[4]; /* big total sectors */ -}; -#define BSBPB_SIZE 25 - -struct bsxbpb { - u_int8_t bspf[4]; /* big sectors per FAT */ - u_int8_t xflg[2]; /* FAT control flags */ - u_int8_t vers[2]; /* file system version */ - u_int8_t rdcl[4]; /* root directory start cluster */ - u_int8_t infs[2]; /* file system info sector */ - u_int8_t bkbs[2]; /* backup boot sector */ - u_int8_t rsvd[12]; /* reserved */ -}; -#define BSXBPB_SIZE 28 - -struct bsx { - u_int8_t drv; /* drive number */ - u_int8_t rsvd; /* reserved */ - u_int8_t sig; /* extended boot signature */ - u_int8_t volid[4]; /* volume ID number */ - u_int8_t label[11]; /* volume label */ - u_int8_t type[8]; /* file system type */ -}; -#define BSX_SIZE 26 - -struct de { - u_int8_t namext[11]; /* name and extension */ - u_int8_t attr; /* attributes */ - u_int8_t rsvd[10]; /* reserved */ - u_int8_t time[2]; /* creation time */ - u_int8_t date[2]; /* creation date */ - u_int8_t clus[2]; /* starting cluster */ - u_int8_t size[4]; /* size */ -#define DE_SIZE 32 -}; -#pragma pack(pop) - -struct bpb { - u_int bps; /* bytes per sector */ - u_int spc; /* sectors per cluster */ - u_int res; /* reserved sectors */ - u_int nft; /* number of FATs */ - u_int rde; /* root directory entries */ - u_int sec; /* total sectors */ - u_int mid; /* media descriptor */ - u_int spf; /* sectors per FAT */ - u_int spt; /* sectors per track */ - u_int hds; /* drive heads */ - u_int hid; /* hidden sectors */ - u_int bsec; /* big total sectors */ - u_int bspf; /* big sectors per FAT */ - u_int rdcl; /* root directory start cluster */ - u_int infs; /* file system info sector */ - u_int bkbs; /* backup boot sector */ -}; - -static u_int8_t bootcode[] = { - 0xfa, /* cli */ - 0x31, 0xc0, /* xor ax,ax */ - 0x8e, 0xd0, /* mov ss,ax */ - 0xbc, 0x00, 0x7c, /* mov sp,7c00h */ - 0xfb, /* sti */ - 0x8e, 0xd8, /* mov ds,ax */ - 0xe8, 0x00, 0x00, /* call $ + 3 */ - 0x5e, /* pop si */ - 0x83, 0xc6, 0x19, /* add si,+19h */ - 0xbb, 0x07, 0x00, /* mov bx,0007h */ - 0xfc, /* cld */ - 0xac, /* lodsb */ - 0x84, 0xc0, /* test al,al */ - 0x74, 0x06, /* jz $ + 8 */ - 0xb4, 0x0e, /* mov ah,0eh */ - 0xcd, 0x10, /* int 10h */ - 0xeb, 0xf5, /* jmp $ - 9 */ - 0x30, 0xe4, /* xor ah,ah */ - 0xcd, 0x16, /* int 16h */ - 0xcd, 0x19, /* int 19h */ - 0x0d, 0x0a, - 'N', 'o', 'n', '-', 's', 'y', 's', 't', - 'e', 'm', ' ', 'd', 'i', 's', 'k', - 0x0d, 0x0a, - 'P', 'r', 'e', 's', 's', ' ', 'a', 'n', - 'y', ' ', 'k', 'e', 'y', ' ', 't', 'o', - ' ', 'r', 'e', 'b', 'o', 'o', 't', - 0x0d, 0x0a, - 0 -}; - -static void print_bpb(struct bpb *); -static u_int ckgeom(const char *, u_int, const char *); -static u_int argtou(const char *, u_int, u_int, const char *); -static int oklabel(const char *); -static void mklabel(u_int8_t *, const char *); -static void setstr(u_int8_t *, const char *, size_t); -static void usage(char* progname); - -/* - * Construct a FAT12, FAT16, or FAT32 file system. - */ -int -mkdosfs_main(int argc, char *argv[]) -{ - static char opts[] = "NB:F:I:L:O:S:a:b:c:e:f:h:i:k:m:n:o:r:s:u:"; - static const char *opt_B, *opt_L, *opt_O; - static u_int opt_F, opt_I, opt_S, opt_a, opt_b, opt_c, opt_e; - static u_int opt_h, opt_i, opt_k, opt_m, opt_n, opt_o, opt_r; - static u_int opt_s, opt_u; - static int opt_N; - static int Iflag, mflag, oflag; - char buf[MAXPATHLEN]; - struct stat sb; - struct timeval tv; - struct bpb bpb; - struct tm *tm; - struct bs *bs; - struct bsbpb *bsbpb; - struct bsxbpb *bsxbpb; - struct bsx *bsx; - struct de *de; - u_int8_t *img; - const char *fname, *dtype, *bname; - ssize_t n; - time_t now; - u_int fat, bss, rds, cls, dir, lsn, x, x1, x2; - int ch, fd, fd1; - char* progname = argv[0]; - - while ((ch = getopt(argc, argv, opts)) != -1) - switch (ch) { - case 'N': - opt_N = 1; - break; - case 'B': - opt_B = optarg; - break; - case 'F': - if (strcmp(optarg, "12") && - strcmp(optarg, "16") && - strcmp(optarg, "32")) - fprintf(stderr, "%s: bad FAT type\n", optarg); - opt_F = atoi(optarg); - break; - case 'I': - opt_I = argto4(optarg, 0, "volume ID"); - Iflag = 1; - break; - case 'L': - if (!oklabel(optarg)) - fprintf(stderr, "%s: bad volume label\n", optarg); - opt_L = optarg; - break; - case 'O': - if (strlen(optarg) > 8) - fprintf(stderr, "%s: bad OEM string\n", optarg); - opt_O = optarg; - break; - case 'S': - opt_S = argto2(optarg, 1, "bytes/sector"); - break; - case 'a': - opt_a = argto4(optarg, 1, "sectors/FAT"); - break; - case 'b': - opt_b = argtox(optarg, 1, "block size"); - opt_c = 0; - break; - case 'c': - opt_c = argto1(optarg, 1, "sectors/cluster"); - opt_b = 0; - break; - case 'e': - opt_e = argto2(optarg, 1, "directory entries"); - break; - case 'h': - opt_h = argto2(optarg, 1, "drive heads"); - break; - case 'i': - opt_i = argto2(optarg, 1, "info sector"); - break; - case 'k': - opt_k = argto2(optarg, 1, "backup sector"); - break; - case 'm': - opt_m = argto1(optarg, 0, "media descriptor"); - mflag = 1; - break; - case 'n': - opt_n = argto1(optarg, 1, "number of FATs"); - break; - case 'o': - opt_o = argto4(optarg, 0, "hidden sectors"); - oflag = 1; - break; - case 'r': - opt_r = argto2(optarg, 1, "reserved sectors"); - break; - case 's': - opt_s = argto4(optarg, 1, "file system size"); - break; - case 'u': - opt_u = argto2(optarg, 1, "sectors/track"); - break; - default: - usage(progname); - } - argc -= optind; - argv += optind; - if (argc < 1 || argc > 2) - usage(progname); - fname = *argv++; - if (!strchr(fname, '/')) { - snprintf(buf, sizeof(buf), "%sr%s", _PATH_DEV, fname); - if (!(fname = strdup(buf))) - fprintf(stderr, NULL); - } - dtype = *argv; - if ((fd = open(fname, opt_N ? O_RDONLY : O_RDWR)) == -1 || - fstat(fd, &sb)) - fprintf(stderr, "%s\n", fname); - memset(&bpb, 0, sizeof(bpb)); - - if (opt_h) - bpb.hds = opt_h; - if (opt_u) - bpb.spt = opt_u; - if (opt_S) - bpb.bps = opt_S; - if (opt_s) - bpb.bsec = opt_s; - if (oflag) - bpb.hid = opt_o; - - bpb.bps = 512; // 512 bytes/sector - bpb.spc = 8; // 4K clusters - - - fprintf(stderr, "opening %s\n", fname); - if ((fd1 = open(fname, O_RDONLY)) == -1) { - fprintf(stderr, "failed to open %s\n", fname); - exit(1); - } - - lseek(fd1, 0, SEEK_SET); - off_t length = lseek(fd1, 0, SEEK_END); - fprintf(stderr, "lseek returned %ld\n", length); - if (length > 0) { - bpb.bsec = length / bpb.bps; - bpb.spt = bpb.bsec; - // use FAT32 for 2 gig or greater - if (length >= 2 *1024 *1024 *1024) { - fat = 32; - } else { - fat = 16; - } - } - close(fd1); - fd1 = -1; - - if (!powerof2(bpb.bps)) - fprintf(stderr, "bytes/sector (%u) is not a power of 2\n", bpb.bps); - if (bpb.bps < MINBPS) - fprintf(stderr, "bytes/sector (%u) is too small; minimum is %u\n", - bpb.bps, MINBPS); - - if (!(fat = opt_F)) { - if (!opt_e && (opt_i || opt_k)) - fat = 32; - } - - if ((fat == 32 && opt_e) || (fat != 32 && (opt_i || opt_k))) - fprintf(stderr, "-%c is not a legal FAT%s option\n", - fat == 32 ? 'e' : opt_i ? 'i' : 'k', - fat == 32 ? "32" : "12/16"); - if (fat == 32) - bpb.rde = 0; - if (opt_b) { - if (!powerof2(opt_b)) - fprintf(stderr, "block size (%u) is not a power of 2\n", opt_b); - if (opt_b < bpb.bps) - fprintf(stderr, "block size (%u) is too small; minimum is %u\n", - opt_b, bpb.bps); - if (opt_b > bpb.bps * MAXSPC) - fprintf(stderr, "block size (%u) is too large; maximum is %u\n", - opt_b, bpb.bps * MAXSPC); - bpb.spc = opt_b / bpb.bps; - } - if (opt_c) { - if (!powerof2(opt_c)) - fprintf(stderr, "sectors/cluster (%u) is not a power of 2\n", opt_c); - bpb.spc = opt_c; - } - if (opt_r) - bpb.res = opt_r; - if (opt_n) { - if (opt_n > MAXNFT) - fprintf(stderr, "number of FATs (%u) is too large; maximum is %u\n", - opt_n, MAXNFT); - bpb.nft = opt_n; - } - if (opt_e) - bpb.rde = opt_e; - if (mflag) { - if (opt_m < 0xf0) - fprintf(stderr, "illegal media descriptor (%#x)\n", opt_m); - bpb.mid = opt_m; - } - if (opt_a) - bpb.bspf = opt_a; - if (opt_i) - bpb.infs = opt_i; - if (opt_k) - bpb.bkbs = opt_k; - bss = 1; - bname = NULL; - fd1 = -1; - if (opt_B) { - bname = opt_B; - if (!strchr(bname, '/')) { - snprintf(buf, sizeof(buf), "/boot/%s", bname); - if (!(bname = strdup(buf))) - fprintf(stderr, NULL); - } - if ((fd1 = open(bname, O_RDONLY)) == -1 || fstat(fd1, &sb)) - fprintf(stderr, "%s", bname); - if (!S_ISREG(sb.st_mode) || sb.st_size % bpb.bps || - sb.st_size < bpb.bps || sb.st_size > bpb.bps * MAXU16) - fprintf(stderr, "%s: inappropriate file type or format\n", bname); - bss = sb.st_size / bpb.bps; - } - if (!bpb.nft) - bpb.nft = 2; - if (!fat) { - if (bpb.bsec < (bpb.res ? bpb.res : bss) + - howmany((RESFTE + (bpb.spc ? MINCLS16 : MAXCLS12 + 1)) * - ((bpb.spc ? 16 : 12) / BPN), bpb.bps * NPB) * - bpb.nft + - howmany(bpb.rde ? bpb.rde : DEFRDE, - bpb.bps / DE_SIZE) + - (bpb.spc ? MINCLS16 : MAXCLS12 + 1) * - (bpb.spc ? bpb.spc : howmany(DEFBLK, bpb.bps))) - fat = 12; - else if (bpb.rde || bpb.bsec < - (bpb.res ? bpb.res : bss) + - howmany((RESFTE + MAXCLS16) * 2, bpb.bps) * bpb.nft + - howmany(DEFRDE, bpb.bps / DE_SIZE) + - (MAXCLS16 + 1) * - (bpb.spc ? bpb.spc : howmany(8192, bpb.bps))) - fat = 16; - else - fat = 32; - } - x = bss; - if (fat == 32) { - if (!bpb.infs) { - if (x == MAXU16 || x == bpb.bkbs) - fprintf(stderr, "no room for info sector\n"); - bpb.infs = x; - } - if (bpb.infs != MAXU16 && x <= bpb.infs) - x = bpb.infs + 1; - if (!bpb.bkbs) { - if (x == MAXU16) - fprintf(stderr, "no room for backup sector\n"); - bpb.bkbs = x; - } else if (bpb.bkbs != MAXU16 && bpb.bkbs == bpb.infs) - fprintf(stderr, "backup sector would overwrite info sector\n"); - if (bpb.bkbs != MAXU16 && x <= bpb.bkbs) - x = bpb.bkbs + 1; - } - if (!bpb.res) - bpb.res = fat == 32 ? MAX(x, MAX(16384 / bpb.bps, 4)) : x; - else if (bpb.res < x) - fprintf(stderr, "too few reserved sectors (need %d have %d)\n", x, bpb.res); - if (fat != 32 && !bpb.rde) - bpb.rde = DEFRDE; - rds = howmany(bpb.rde, bpb.bps / DE_SIZE); - if (!bpb.spc) - for (bpb.spc = howmany(fat == 16 ? DEFBLK16 : DEFBLK, bpb.bps); - bpb.spc < MAXSPC && - bpb.res + - howmany((RESFTE + maxcls(fat)) * (fat / BPN), - bpb.bps * NPB) * bpb.nft + - rds + - (u_int64_t)(maxcls(fat) + 1) * bpb.spc <= bpb.bsec; - bpb.spc <<= 1); - if (fat != 32 && bpb.bspf > MAXU16) - fprintf(stderr, "too many sectors/FAT for FAT12/16\n"); - x1 = bpb.res + rds; - x = bpb.bspf ? bpb.bspf : 1; - if (x1 + (u_int64_t)x * bpb.nft > bpb.bsec) - fprintf(stderr, "meta data exceeds file system size\n"); - x1 += x * bpb.nft; - x = (u_int64_t)(bpb.bsec - x1) * bpb.bps * NPB / - (bpb.spc * bpb.bps * NPB + fat / BPN * bpb.nft); - x2 = howmany((RESFTE + MIN(x, maxcls(fat))) * (fat / BPN), - bpb.bps * NPB); - if (!bpb.bspf) { - bpb.bspf = x2; - x1 += (bpb.bspf - 1) * bpb.nft; - } - cls = (bpb.bsec - x1) / bpb.spc; - x = (u_int64_t)bpb.bspf * bpb.bps * NPB / (fat / BPN) - RESFTE; - if (cls > x) - cls = x; - if (bpb.bspf < x2) - fprintf(stderr, "warning: sectors/FAT limits file system to %u clusters\n", - cls); - if (cls < mincls(fat)) - fprintf(stderr, "%u clusters too few clusters for FAT%u, need %u\n", cls, fat, - mincls(fat)); - if (cls > maxcls(fat)) { - cls = maxcls(fat); - bpb.bsec = x1 + (cls + 1) * bpb.spc - 1; - fprintf(stderr, "warning: FAT type limits file system to %u sectors\n", - bpb.bsec); - } - printf("%s: %u sector%s in %u FAT%u cluster%s " - "(%u bytes/cluster)\n", fname, cls * bpb.spc, - cls * bpb.spc == 1 ? "" : "s", cls, fat, - cls == 1 ? "" : "s", bpb.bps * bpb.spc); - if (!bpb.mid) - bpb.mid = !bpb.hid ? 0xf0 : 0xf8; - if (fat == 32) - bpb.rdcl = RESFTE; - if (bpb.hid + bpb.bsec <= MAXU16) { - bpb.sec = bpb.bsec; - bpb.bsec = 0; - } - if (fat != 32) { - bpb.spf = bpb.bspf; - bpb.bspf = 0; - } - ch = 0; - if (fat == 12) - ch = 1; /* 001 Primary DOS with 12 bit FAT */ - else if (fat == 16) { - if (bpb.bsec == 0) - ch = 4; /* 004 Primary DOS with 16 bit FAT <32M */ - else - ch = 6; /* 006 Primary 'big' DOS, 16-bit FAT (> 32MB) */ - /* - * XXX: what about: - * 014 DOS (16-bit FAT) - LBA - * ? - */ - } else if (fat == 32) { - ch = 11; /* 011 Primary DOS with 32 bit FAT */ - /* - * XXX: what about: - * 012 Primary DOS with 32 bit FAT - LBA - * ? - */ - } - if (ch != 0) - printf("MBR type: %d\n", ch); - print_bpb(&bpb); - if (!opt_N) { - gettimeofday(&tv, NULL); - now = tv.tv_sec; - tm = localtime(&now); - if (!(img = malloc(bpb.bps))) - fprintf(stderr, NULL); - dir = bpb.res + (bpb.spf ? bpb.spf : bpb.bspf) * bpb.nft; - - for (lsn = 0; lsn < dir + (fat == 32 ? bpb.spc : rds); lsn++) { - x = lsn; - if (opt_B && - fat == 32 && bpb.bkbs != MAXU16 && - bss <= bpb.bkbs && x >= bpb.bkbs) { - x -= bpb.bkbs; - if (!x && lseek(fd1, 0, SEEK_SET)) - fprintf(stderr, "lseek failed for %s\n", bname); - } - if (opt_B && x < bss) { - if ((n = read(fd1, img, bpb.bps)) == -1) - fprintf(stderr, "%s\n", bname); - if (n != bpb.bps) - fprintf(stderr, "%s: can't read sector %u\n", bname, x); - } else - memset(img, 0, bpb.bps); - if (!lsn || - (fat == 32 && bpb.bkbs != MAXU16 && lsn == bpb.bkbs)) { - x1 = BS_SIZE; - bsbpb = (struct bsbpb *)(img + x1); - mk2(bsbpb->bps, bpb.bps); - mk1(bsbpb->spc, bpb.spc); - mk2(bsbpb->res, bpb.res); - mk1(bsbpb->nft, bpb.nft); - mk2(bsbpb->rde, bpb.rde); - mk2(bsbpb->sec, bpb.sec); - mk1(bsbpb->mid, bpb.mid); - mk2(bsbpb->spf, bpb.spf); - mk2(bsbpb->spt, bpb.spt); - mk2(bsbpb->hds, bpb.hds); - mk4(bsbpb->hid, bpb.hid); - mk4(bsbpb->bsec, bpb.bsec); - x1 += BSBPB_SIZE; - if (fat == 32) { - bsxbpb = (struct bsxbpb *)(img + x1); - mk4(bsxbpb->bspf, bpb.bspf); - mk2(bsxbpb->xflg, 0); - mk2(bsxbpb->vers, 0); - mk4(bsxbpb->rdcl, bpb.rdcl); - mk2(bsxbpb->infs, bpb.infs); - mk2(bsxbpb->bkbs, bpb.bkbs); - x1 += BSXBPB_SIZE; - } - bsx = (struct bsx *)(img + x1); - mk1(bsx->sig, 0x29); - if (Iflag) - x = opt_I; - else - x = (((u_int)(1 + tm->tm_mon) << 8 | - (u_int)tm->tm_mday) + - ((u_int)tm->tm_sec << 8 | - (u_int)(tv.tv_usec / 10))) << 16 | - ((u_int)(1900 + tm->tm_year) + - ((u_int)tm->tm_hour << 8 | - (u_int)tm->tm_min)); - mk4(bsx->volid, x); - mklabel(bsx->label, opt_L ? opt_L : "NO_NAME"); - snprintf(buf, sizeof(buf), "FAT%u", fat); - setstr(bsx->type, buf, sizeof(bsx->type)); - if (!opt_B) { - x1 += BSX_SIZE; - bs = (struct bs *)img; - mk1(bs->jmp[0], 0xeb); - mk1(bs->jmp[1], x1 - 2); - mk1(bs->jmp[2], 0x90); - setstr(bs->oem, opt_O ? opt_O : "NetBSD", - sizeof(bs->oem)); - memcpy(img + x1, bootcode, sizeof(bootcode)); - mk2(img + bpb.bps - 2, DOSMAGIC); - } - } else if (fat == 32 && bpb.infs != MAXU16 && - (lsn == bpb.infs || - (bpb.bkbs != MAXU16 && - lsn == bpb.bkbs + bpb.infs))) { - mk4(img, 0x41615252); - mk4(img + bpb.bps - 28, 0x61417272); - mk4(img + bpb.bps - 24, 0xffffffff); - mk4(img + bpb.bps - 20, bpb.rdcl); - mk2(img + bpb.bps - 2, DOSMAGIC); - } else if (lsn >= bpb.res && lsn < dir && - !((lsn - bpb.res) % - (bpb.spf ? bpb.spf : bpb.bspf))) { - mk1(img[0], bpb.mid); - for (x = 1; x < fat * (fat == 32 ? 3 : 2) / 8; x++) - mk1(img[x], fat == 32 && x % 4 == 3 ? 0x0f : 0xff); - } else if (lsn == dir && opt_L) { - de = (struct de *)img; - mklabel(de->namext, opt_L); - mk1(de->attr, 050); - x = (u_int)tm->tm_hour << 11 | - (u_int)tm->tm_min << 5 | - (u_int)tm->tm_sec >> 1; - mk2(de->time, x); - x = (u_int)(tm->tm_year - 80) << 9 | - (u_int)(tm->tm_mon + 1) << 5 | - (u_int)tm->tm_mday; - mk2(de->date, x); - } - if ((n = write(fd, img, bpb.bps)) == -1) - fprintf(stderr, "%s\n", fname); - if (n != bpb.bps) - fprintf(stderr, "%s: can't write sector %u\n", fname, lsn); - } - } - return 0; -} - -/* - * Print out BPB values. - */ -static void -print_bpb(struct bpb *bpb) -{ - printf("bps=%u spc=%u res=%u nft=%u", bpb->bps, bpb->spc, bpb->res, - bpb->nft); - if (bpb->rde) - printf(" rde=%u", bpb->rde); - if (bpb->sec) - printf(" sec=%u", bpb->sec); - printf(" mid=%#x", bpb->mid); - if (bpb->spf) - printf(" spf=%u", bpb->spf); - printf(" spt=%u hds=%u hid=%u", bpb->spt, bpb->hds, bpb->hid); - if (bpb->bsec) - printf(" bsec=%u", bpb->bsec); - if (!bpb->spf) { - printf(" bspf=%u rdcl=%u", bpb->bspf, bpb->rdcl); - printf(" infs="); - printf(bpb->infs == MAXU16 ? "%#x" : "%u", bpb->infs); - printf(" bkbs="); - printf(bpb->bkbs == MAXU16 ? "%#x" : "%u", bpb->bkbs); - } - printf("\n"); -} - -/* - * Check a disk geometry value. - */ -static u_int -ckgeom(const char *fname, u_int val, const char *msg) -{ - if (!val) - fprintf(stderr, "%s: no default %s\n", fname, msg); - if (val > MAXU16) - fprintf(stderr, "%s: illegal %s\n", fname, msg); - return val; -} - -/* - * Convert and check a numeric option argument. - */ -static u_int -argtou(const char *arg, u_int lo, u_int hi, const char *msg) -{ - char *s; - u_long x; - - errno = 0; - x = strtoul(arg, &s, 0); - if (errno || !*arg || *s || x < lo || x > hi) - fprintf(stderr, "%s: bad %s\n", arg, msg); - return x; -} - -/* - * Check a volume label. - */ -static int -oklabel(const char *src) -{ - int c, i; - - for (i = 0; i <= 11; i++) { - c = (u_char)*src++; - if (c < ' ' + !i || strchr("\"*+,./:;<=>?[\\]|", c)) - break; - } - return i && !c; -} - -/* - * Make a volume label. - */ -static void -mklabel(u_int8_t *dest, const char *src) -{ - int c, i; - - for (i = 0; i < 11; i++) { - c = *src ? toupper((unsigned char)*src++) : ' '; - *dest++ = !i && c == '\xe5' ? 5 : c; - } -} - -/* - * Copy string, padding with spaces. - */ -static void -setstr(u_int8_t *dest, const char *src, size_t len) -{ - while (len--) - *dest++ = *src ? *src++ : ' '; -} - -/* - * Print usage message. - */ -static void -usage(char* progname) -{ - fprintf(stderr, - "usage: %s [ -options ] special [disktype]\n", progname); - fprintf(stderr, "where the options are:\n"); - fprintf(stderr, "\t-N don't create file system: " - "just print out parameters\n"); - fprintf(stderr, "\t-B get bootstrap from file\n"); - fprintf(stderr, "\t-F FAT type (12, 16, or 32)\n"); - fprintf(stderr, "\t-I volume ID\n"); - fprintf(stderr, "\t-L volume label\n"); - fprintf(stderr, "\t-O OEM string\n"); - fprintf(stderr, "\t-S bytes/sector\n"); - fprintf(stderr, "\t-a sectors/FAT\n"); - fprintf(stderr, "\t-b block size\n"); - fprintf(stderr, "\t-c sectors/cluster\n"); - fprintf(stderr, "\t-e root directory entries\n"); - fprintf(stderr, "\t-h drive heads\n"); - fprintf(stderr, "\t-i file system info sector\n"); - fprintf(stderr, "\t-k backup boot sector\n"); - fprintf(stderr, "\t-m media descriptor\n"); - fprintf(stderr, "\t-n number of FATs\n"); - fprintf(stderr, "\t-o hidden sectors\n"); - fprintf(stderr, "\t-r reserved sectors\n"); - fprintf(stderr, "\t-s file system size (sectors)\n"); - fprintf(stderr, "\t-u sectors/track\n"); - exit(1); -} - - |