diff options
Diffstat (limited to 'sbin/newfs_msdos/newfs_msdos.c')
-rw-r--r-- | sbin/newfs_msdos/newfs_msdos.c | 287 |
1 files changed, 162 insertions, 125 deletions
diff --git a/sbin/newfs_msdos/newfs_msdos.c b/sbin/newfs_msdos/newfs_msdos.c index 4685782..a399425 100644 --- a/sbin/newfs_msdos/newfs_msdos.c +++ b/sbin/newfs_msdos/newfs_msdos.c @@ -214,6 +214,35 @@ static const u_int8_t bootcode[] = { 0 }; +struct msdos_options { + const char *bootstrap; + const char *volume_label; + const char *OEM_string; + const char *floppy; + u_int fat_type; + u_int volume_id; + u_int bytes_per_sector; + u_int sectors_per_fat; + u_int block_size; + u_int sectors_per_cluster; + u_int directory_entries; + u_int drive_heads; + u_int info_sector; + u_int backup_sector; + u_int media_descriptor; + u_int num_FAT; + u_int hidden_sectors; + u_int reserved_sectors; + u_int size; + u_int sectors_per_track; + int no_create; + off_t create_size; + off_t offset; + int volume_id_set; + int media_descriptor_set; + int hidden_sectors_set; +}; + static volatile sig_atomic_t got_siginfo; static void infohandler(int); @@ -226,6 +255,7 @@ static u_int ckgeom(const char *, u_int, const char *); static u_int argtou(const char *, u_int, u_int, const char *); static off_t argtooff(const char *, const char *); static int oklabel(const char *); +static int mkfs_msdos(const char *, const char *, const struct msdos_options *); static void mklabel(u_int8_t *, const char *); static void setstr(u_int8_t *, const char *, size_t); static void usage(void); @@ -237,114 +267,96 @@ int main(int argc, char *argv[]) { 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:"; - const char *opt_B = NULL, *opt_L = NULL, *opt_O = NULL, *opt_f = NULL; - u_int opt_F = 0, opt_I = 0, opt_S = 0, opt_a = 0, opt_b = 0, opt_c = 0; - u_int opt_e = 0, opt_h = 0, opt_i = 0, opt_k = 0, opt_m = 0, opt_n = 0; - u_int opt_o = 0, opt_r = 0, opt_s = 0, opt_u = 0; - int opt_N = 0; - int Iflag = 0, mflag = 0, oflag = 0; + struct msdos_options o; + const char *fname, *dtype; char buf[MAXPATHLEN]; - struct sigaction si_sa; - 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; - off_t opt_create = 0, opt_ofs = 0; + int ch; + + memset(&o, 0, sizeof(o)); while ((ch = getopt(argc, argv, opts)) != -1) switch (ch) { case '@': - opt_ofs = argtooff(optarg, "offset"); + o.offset = argtooff(optarg, "offset"); break; case 'N': - opt_N = 1; + o.no_create = 1; break; case 'B': - opt_B = optarg; + o.bootstrap = optarg; break; case 'C': - opt_create = argtooff(optarg, "create size"); + o.create_size = argtooff(optarg, "create size"); break; case 'F': if (strcmp(optarg, "12") && strcmp(optarg, "16") && strcmp(optarg, "32")) errx(1, "%s: bad FAT type", optarg); - opt_F = atoi(optarg); + o.fat_type = atoi(optarg); break; case 'I': - opt_I = argto4(optarg, 0, "volume ID"); - Iflag = 1; + o.volume_id = argto4(optarg, 0, "volume ID"); + o.volume_id_set = 1; break; case 'L': if (!oklabel(optarg)) errx(1, "%s: bad volume label", optarg); - opt_L = optarg; + o.volume_label = optarg; break; case 'O': if (strlen(optarg) > 8) errx(1, "%s: bad OEM string", optarg); - opt_O = optarg; + o.OEM_string = optarg; break; case 'S': - opt_S = argto2(optarg, 1, "bytes/sector"); + o.bytes_per_sector = argto2(optarg, 1, "bytes/sector"); break; case 'a': - opt_a = argto4(optarg, 1, "sectors/FAT"); + o.sectors_per_fat = argto4(optarg, 1, "sectors/FAT"); break; case 'b': - opt_b = argtox(optarg, 1, "block size"); - opt_c = 0; + o.block_size = argtox(optarg, 1, "block size"); + o.sectors_per_cluster = 0; break; case 'c': - opt_c = argto1(optarg, 1, "sectors/cluster"); - opt_b = 0; + o.sectors_per_cluster = argto1(optarg, 1, "sectors/cluster"); + o.block_size = 0; break; case 'e': - opt_e = argto2(optarg, 1, "directory entries"); + o.directory_entries = argto2(optarg, 1, "directory entries"); break; case 'f': - opt_f = optarg; + o.floppy = optarg; break; case 'h': - opt_h = argto2(optarg, 1, "drive heads"); + o.drive_heads = argto2(optarg, 1, "drive heads"); break; case 'i': - opt_i = argto2(optarg, 1, "info sector"); + o.info_sector = argto2(optarg, 1, "info sector"); break; case 'k': - opt_k = argto2(optarg, 1, "backup sector"); + o.backup_sector = argto2(optarg, 1, "backup sector"); break; case 'm': - opt_m = argto1(optarg, 0, "media descriptor"); - mflag = 1; + o.media_descriptor = argto1(optarg, 0, "media descriptor"); + o.media_descriptor_set = 1; break; case 'n': - opt_n = argto1(optarg, 1, "number of FATs"); + o.num_FAT = argto1(optarg, 1, "number of FATs"); break; case 'o': - opt_o = argto4(optarg, 0, "hidden sectors"); - oflag = 1; + o.hidden_sectors = argto4(optarg, 0, "hidden sectors"); + o.hidden_sectors_set = 1; break; case 'r': - opt_r = argto2(optarg, 1, "reserved sectors"); + o.reserved_sectors = argto2(optarg, 1, "reserved sectors"); break; case 's': - opt_s = argto4(optarg, 1, "file system size"); + o.size = argto4(optarg, 1, "file system size"); break; case 'u': - opt_u = argto2(optarg, 1, "sectors/track"); + o.sectors_per_track = argto2(optarg, 1, "sectors/track"); break; default: usage(); @@ -354,57 +366,82 @@ main(int argc, char *argv[]) if (argc < 1 || argc > 2) usage(); fname = *argv++; - if (!opt_create && !strchr(fname, '/')) { + if (!o.create_size && !strchr(fname, '/')) { snprintf(buf, sizeof(buf), "%s%s", _PATH_DEV, fname); if (!(fname = strdup(buf))) err(1, NULL); } dtype = *argv; - if (opt_create) { - if (opt_N) + return mkfs_msdos(fname, dtype, &o); +} + +int mkfs_msdos(const char *fname, const char *dtype, + const struct msdos_options *op) +{ + char buf[MAXPATHLEN]; + struct sigaction si_sa; + 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 *bname; + ssize_t n; + time_t now; + u_int fat, bss, rds, cls, dir, lsn, x, x1, x2; + int fd, fd1; + struct msdos_options o = *op; + + if (o.create_size) { + if (o.no_create) errx(1, "create (-C) is incompatible with -N"); fd = open(fname, O_RDWR | O_CREAT | O_TRUNC, 0644); if (fd == -1) errx(1, "failed to create %s", fname); - if (ftruncate(fd, opt_create)) - errx(1, "failed to initialize %jd bytes", (intmax_t)opt_create); - } else if ((fd = open(fname, opt_N ? O_RDONLY : O_RDWR)) == -1) + if (ftruncate(fd, o.create_size)) + errx(1, "failed to initialize %jd bytes", (intmax_t)o.create_size); + } else if ((fd = open(fname, o.no_create ? O_RDONLY : O_RDWR)) == -1) err(1, "%s", fname); if (fstat(fd, &sb)) err(1, "%s", fname); - if (opt_create) { + if (o.create_size) { if (!S_ISREG(sb.st_mode)) warnx("warning, %s is not a regular file", fname); } else { if (!S_ISCHR(sb.st_mode)) warnx("warning, %s is not a character device", fname); } - if (!opt_N) + if (!o.no_create) check_mounted(fname, sb.st_mode); - if (opt_ofs && opt_ofs != lseek(fd, opt_ofs, SEEK_SET)) - errx(1, "cannot seek to %jd", (intmax_t)opt_ofs); + if (o.offset && o.offset != lseek(fd, o.offset, SEEK_SET)) + errx(1, "cannot seek to %jd", (intmax_t)o.offset); memset(&bpb, 0, sizeof(bpb)); - if (opt_f) { - getstdfmt(opt_f, &bpb); + if (o.floppy) { + getstdfmt(o.floppy, &bpb); bpb.bpbHugeSectors = bpb.bpbSectors; bpb.bpbSectors = 0; bpb.bpbBigFATsecs = bpb.bpbFATsecs; bpb.bpbFATsecs = 0; } - if (opt_h) - bpb.bpbHeads = opt_h; - if (opt_u) - bpb.bpbSecPerTrack = opt_u; - if (opt_S) - bpb.bpbBytesPerSec = opt_S; - if (opt_s) - bpb.bpbHugeSectors = opt_s; - if (oflag) - bpb.bpbHiddenSecs = opt_o; - if (!(opt_f || (opt_h && opt_u && opt_S && opt_s && oflag))) { + if (o.drive_heads) + bpb.bpbHeads = o.drive_heads; + if (o.sectors_per_track) + bpb.bpbSecPerTrack = o.sectors_per_track; + if (o.bytes_per_sector) + bpb.bpbBytesPerSec = o.bytes_per_sector; + if (o.size) + bpb.bpbHugeSectors = o.size; + if (o.hidden_sectors_set) + bpb.bpbHiddenSecs = o.hidden_sectors; + if (!(o.floppy || (o.drive_heads && o.sectors_per_track && o.bytes_per_sector && o.size && o.hidden_sectors_set))) { off_t delta; - getdiskinfo(fd, fname, dtype, oflag, &bpb); - bpb.bpbHugeSectors -= (opt_ofs / bpb.bpbBytesPerSec); + getdiskinfo(fd, fname, dtype, o.hidden_sectors_set, &bpb); + bpb.bpbHugeSectors -= (o.offset / bpb.bpbBytesPerSec); delta = bpb.bpbHugeSectors % bpb.bpbSecPerTrack; if (delta != 0) { warnx("trim %d sectors to adjust to a multiple of %d", @@ -429,60 +466,60 @@ main(int argc, char *argv[]) if (bpb.bpbBytesPerSec < MINBPS) errx(1, "bytes/sector (%u) is too small; minimum is %u", bpb.bpbBytesPerSec, MINBPS); - if (!(fat = opt_F)) { - if (opt_f) + if (!(fat = o.fat_type)) { + if (o.floppy) fat = 12; - else if (!opt_e && (opt_i || opt_k)) + else if (!o.directory_entries && (o.info_sector || o.backup_sector)) fat = 32; } - if ((fat == 32 && opt_e) || (fat != 32 && (opt_i || opt_k))) + if ((fat == 32 && o.directory_entries) || (fat != 32 && (o.info_sector || o.backup_sector))) errx(1, "-%c is not a legal FAT%s option", - fat == 32 ? 'e' : opt_i ? 'i' : 'k', + fat == 32 ? 'e' : o.info_sector ? 'i' : 'k', fat == 32 ? "32" : "12/16"); - if (opt_f && fat == 32) + if (o.floppy && fat == 32) bpb.bpbRootDirEnts = 0; - if (opt_b) { - if (!powerof2(opt_b)) - errx(1, "block size (%u) is not a power of 2", opt_b); - if (opt_b < bpb.bpbBytesPerSec) + if (o.block_size) { + if (!powerof2(o.block_size)) + errx(1, "block size (%u) is not a power of 2", o.block_size); + if (o.block_size < bpb.bpbBytesPerSec) errx(1, "block size (%u) is too small; minimum is %u", - opt_b, bpb.bpbBytesPerSec); - if (opt_b > bpb.bpbBytesPerSec * MAXSPC) + o.block_size, bpb.bpbBytesPerSec); + if (o.block_size > bpb.bpbBytesPerSec * MAXSPC) errx(1, "block size (%u) is too large; maximum is %u", - opt_b, bpb.bpbBytesPerSec * MAXSPC); - bpb.bpbSecPerClust = opt_b / bpb.bpbBytesPerSec; + o.block_size, bpb.bpbBytesPerSec * MAXSPC); + bpb.bpbSecPerClust = o.block_size / bpb.bpbBytesPerSec; } - if (opt_c) { - if (!powerof2(opt_c)) - errx(1, "sectors/cluster (%u) is not a power of 2", opt_c); - bpb.bpbSecPerClust = opt_c; + if (o.sectors_per_cluster) { + if (!powerof2(o.sectors_per_cluster)) + errx(1, "sectors/cluster (%u) is not a power of 2", o.sectors_per_cluster); + bpb.bpbSecPerClust = o.sectors_per_cluster; } - if (opt_r) - bpb.bpbResSectors = opt_r; - if (opt_n) { - if (opt_n > MAXNFT) + if (o.reserved_sectors) + bpb.bpbResSectors = o.reserved_sectors; + if (o.num_FAT) { + if (o.num_FAT > MAXNFT) errx(1, "number of FATs (%u) is too large; maximum is %u", - opt_n, MAXNFT); - bpb.bpbFATs = opt_n; + o.num_FAT, MAXNFT); + bpb.bpbFATs = o.num_FAT; } - if (opt_e) - bpb.bpbRootDirEnts = opt_e; - if (mflag) { - if (opt_m < 0xf0) - errx(1, "illegal media descriptor (%#x)", opt_m); - bpb.bpbMedia = opt_m; + if (o.directory_entries) + bpb.bpbRootDirEnts = o.directory_entries; + if (o.media_descriptor_set) { + if (o.media_descriptor < 0xf0) + errx(1, "illegal media descriptor (%#x)", o.media_descriptor); + bpb.bpbMedia = o.media_descriptor; } - if (opt_a) - bpb.bpbBigFATsecs = opt_a; - if (opt_i) - bpb.bpbFSInfo = opt_i; - if (opt_k) - bpb.bpbBackup = opt_k; + if (o.sectors_per_fat) + bpb.bpbBigFATsecs = o.sectors_per_fat; + if (o.info_sector) + bpb.bpbFSInfo = o.info_sector; + if (o.backup_sector) + bpb.bpbBackup = o.backup_sector; bss = 1; bname = NULL; fd1 = -1; - if (opt_B) { - bname = opt_B; + if (o.bootstrap) { + bname = o.bootstrap; if (!strchr(bname, '/')) { snprintf(buf, sizeof(buf), "/boot/%s", bname); if (!(bname = strdup(buf))) @@ -612,7 +649,7 @@ main(int argc, char *argv[]) bpb.bpbBigFATsecs = 0; } print_bpb(&bpb); - if (!opt_N) { + if (!o.no_create) { gettimeofday(&tv, NULL); now = tv.tv_sec; tm = localtime(&now); @@ -634,14 +671,14 @@ main(int argc, char *argv[]) got_siginfo = 0; } x = lsn; - if (opt_B && + if (o.bootstrap && fat == 32 && bpb.bpbBackup != MAXU16 && bss <= bpb.bpbBackup && x >= bpb.bpbBackup) { x -= bpb.bpbBackup; - if (!x && lseek(fd1, opt_ofs, SEEK_SET)) + if (!x && lseek(fd1, o.offset, SEEK_SET)) err(1, "%s", bname); } - if (opt_B && x < bss) { + if (o.bootstrap && x < bss) { if ((n = read(fd1, img, bpb.bpbBytesPerSec)) == -1) err(1, "%s", bname); if ((unsigned)n != bpb.bpbBytesPerSec) @@ -678,8 +715,8 @@ main(int argc, char *argv[]) } bsx = (struct bsx *)(img + x1); mk1(bsx->exBootSignature, 0x29); - if (Iflag) - x = opt_I; + if (o.volume_id_set) + x = o.volume_id; else x = (((u_int)(1 + tm->tm_mon) << 8 | (u_int)tm->tm_mday) + @@ -689,16 +726,16 @@ main(int argc, char *argv[]) ((u_int)tm->tm_hour << 8 | (u_int)tm->tm_min)); mk4(bsx->exVolumeID, x); - mklabel(bsx->exVolumeLabel, opt_L ? opt_L : "NO NAME"); + mklabel(bsx->exVolumeLabel, o.volume_label ? o.volume_label : "NO NAME"); sprintf(buf, "FAT%u", fat); setstr(bsx->exFileSysType, buf, sizeof(bsx->exFileSysType)); - if (!opt_B) { + if (!o.bootstrap) { x1 += sizeof(struct bsx); bs = (struct bs *)img; mk1(bs->bsJump[0], 0xeb); mk1(bs->bsJump[1], x1 - 2); mk1(bs->bsJump[2], 0x90); - setstr(bs->bsOemName, opt_O ? opt_O : "BSD4.4 ", + setstr(bs->bsOemName, o.OEM_string ? o.OEM_string : "BSD4.4 ", sizeof(bs->bsOemName)); memcpy(img + x1, bootcode, sizeof(bootcode)); mk2(img + MINBPS - 2, DOSMAGIC); @@ -719,9 +756,9 @@ main(int argc, char *argv[]) mk1(img[0], bpb.bpbMedia); 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) { + } else if (lsn == dir && o.volume_label) { de = (struct de *)img; - mklabel(de->deName, opt_L); + mklabel(de->deName, o.volume_label); mk1(de->deAttributes, 050); x = (u_int)tm->tm_hour << 11 | (u_int)tm->tm_min << 5 | |