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There are two problems with insisting the FAT file system size be a multiple 

of track-size units:  2) the FAT metadata areas may not be a multiple of a
"track", 1) the partition may not be track-aligned to begin with, 0) what's
a "track"? is it something a robot rover leaves on Mars?
This commit is contained in:
jakllsch 2012-12-15 04:34:36 +00:00
parent 4e8ff3d837
commit 913c04e5ec
1 changed files with 2 additions and 9 deletions
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11
sbin/newfs_msdos/newfs_msdos.c
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@ -1,4 +1,4 @@
/* $NetBSD: newfs_msdos.c,v 1.39 2012/11/04 14:27:15 jakllsch Exp $ */
/* $NetBSD: newfs_msdos.c,v 1.40 2012/12/15 04:34:36 jakllsch Exp $ */
/*
* Copyright (c) 1998 Robert Nordier
@ -33,7 +33,7 @@
static const char rcsid[] =
"$FreeBSD: src/sbin/newfs_msdos/newfs_msdos.c,v 1.15 2000/10/10 01:49:37 wollman Exp $";
#else
__RCSID("$NetBSD: newfs_msdos.c,v 1.39 2012/11/04 14:27:15 jakllsch Exp $");
__RCSID("$NetBSD: newfs_msdos.c,v 1.40 2012/12/15 04:34:36 jakllsch Exp $");
#endif
#endif /* not lint */
@ -409,15 +409,8 @@ main(int argc, char *argv[])
if (oflag)
bpb.hid = opt_o;
if (!(opt_f || (opt_h && opt_u && opt_S && opt_s && oflag))) {
off_t delta;
getbpbinfo(fd, fname, dtype, oflag, &bpb, opt_create != 0);
bpb.bsec -= (opt_ofs / bpb.bps);
delta = bpb.bsec % bpb.spt;
if (delta != 0) {
warnx("trim %d sectors to adjust to a multiple of %d",
(int)delta, bpb.spt);
bpb.bsec -= delta;
}
if (bpb.spc == 0) { /* set defaults */
if (bpb.bsec <= 6000) /* about 3MB -> 512 bytes */
bpb.spc = 1;