sbin/newfs_msdos/mkfs_msdos.c

75 #define	mincls(fat)  ((fat) == 12 ? MINCLS12 :	\
76 		      (fat) == 16 ? MINCLS16 :	\
79 #define	maxcls(fat)  ((fat) == 12 ? MAXCLS12 :	\
80 		      (fat) == 16 ? MAXCLS16 :	\
244     u_int fat, bss, rds, cls, dir, lsn, x, x1, x2;
352     if (!(fat = o.fat_type)) {
354 	    fat = 12;
356 	    fat = 32;
358     if ((fat == 32 && o.directory_entries) || (fat != 32 && (o.info_sector || o.backup_sector))) {
360 	     fat == 32 ? 'e' : o.info_sector ? 'i' : 'k',
361 	     fat == 32 ? "32" : "12/16");
364     if (o.floppy && fat == 32)
366     if (fat != 0 && fat != 12 && fat != 16 && fat != 32) {
367 	warnx("%d: bad FAT type", fat);
447     if (!fat) {
458 	    fat = 12;
467 	    fat = 16;
469 	    fat = 32;
472     if (fat == 32) {
496 	bpb.bpbResSectors = fat == 32 ?
503     if (fat != 32 && !bpb.bpbRootDirEnts)
507 	for (bpb.bpbSecPerClust = howmany(fat == 16 ? DEFBLK16 :
511 	     howmany((RESFTE + maxcls(fat)) * (fat / BPN),
515 	     (u_int64_t) (maxcls(fat) + 1) *
519     if (fat != 32 && bpb.bpbBigFATsecs > MAXU16) {
531 	(bpb.bpbSecPerClust * bpb.bpbBytesPerSec * NPB + fat /
533     x2 = howmany((RESFTE + MIN(x, maxcls(fat))) * (fat / BPN),
540     x = (u_int64_t)bpb.bpbBigFATsecs * bpb.bpbBytesPerSec * NPB / (fat / BPN) -
547     if (cls < mincls(fat)) {
548 	warnx("%u clusters too few clusters for FAT%u, need %u", cls, fat,
549 	    mincls(fat));
552     if (cls > maxcls(fat)) {
553 	cls = maxcls(fat);
560 	   cls * bpb.bpbSecPerClust == 1 ? "" : "s", cls, fat,
564     if (fat == 32)
570     if (fat != 32) {
591 	for (lsn = 0; lsn < dir + (fat == 32 ? bpb.bpbSecPerClust : rds); lsn++) {
595 			(dir + (fat == 32 ? bpb.bpbSecPerClust: rds)),
597 			    (fat == 32 ? bpb.bpbSecPerClust: rds)));
602 		fat == 32 && bpb.bpbBackup != MAXU16 &&
622 		(fat == 32 && bpb.bpbBackup != MAXU16 &&
639 		if (fat == 32) {
663 		snprintf(buf, sizeof(buf), "FAT%u", fat);
676 	    } else if (fat == 32 && bpb.bpbFSInfo != MAXU16 &&
690 		for (x = 1; x < fat * (fat == 32 ? 3 : 2) / 8; x++)
691 		    mk1(img[x], fat == 32 && x % 4 == 3 ? 0x0f : 0xff);