From: Ben Pfaff Date: Tue, 3 Jan 2006 20:20:18 +0000 (+0000) Subject: Always round up disk sizes to multiple of a cylinder, X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7e52eebab6be7434cb2d23eea2f0e91704cd1c32;p=pintos-anon Always round up disk sizes to multiple of a cylinder, because Bochs 2.2.5 requires that. Based on patch from Godmar Back. --- diff --git a/src/utils/pintos b/src/utils/pintos index fd5078e..32a4af5 100755 --- a/src/utils/pintos +++ b/src/utils/pintos @@ -212,10 +212,8 @@ sub find_disks { my ($mb) = $disk->{FILENAME}; undef $disk->{FILENAME}; - my ($cylinder) = 1024 * 504; - my ($bytes) = $mb * ($cylinder * 2); - $bytes = int (($bytes + $cylinder - 1) / $cylinder) * $cylinder; - extend_disk ($disk, $bytes); + my ($cyl_size) = 512 * 16 * 63; + extend_disk ($disk, ceil ($mb * 2) * $cyl_size); } else { # The file must exist and have nonzero size. -e $disk->{FILENAME} or die "$disk->{FILENAME}: stat: $!\n"; @@ -425,9 +423,10 @@ EOF # line for attaching it to $device. sub print_bochs_disk_line { my ($device, $iface) = @_; - my ($file) = $disks_by_iface[$iface]{FILENAME}; + my ($disk) = $disks_by_iface[$iface]; + my ($file) = $disk->{FILENAME}; if (defined $file) { - my (%geom) = disk_geometry ($file); + my (%geom) = disk_geometry ($disk); print BOCHSRC "$device: type=disk, path=$file, mode=flat, "; print BOCHSRC "cylinders=$geom{C}, heads=$geom{H}, spt=$geom{S}, "; print BOCHSRC "translation=none\n"; @@ -487,7 +486,8 @@ serial0.fileName = "pintos.out" EOF for (my ($i) = 0; $i < 4; $i++) { - my ($dsk) = $disks_by_iface[$i]{FILENAME}; + my ($disk) = $disks_by_iface[$i]; + my ($dsk) = $disk->{FILENAME}; next if !defined $dsk; my ($pln) = $dsk; @@ -502,7 +502,7 @@ $device.deviceType = "plainDisk" $device.fileName = "$pln" EOF - my (%geom) = disk_geometry ($dsk); + my (%geom) = disk_geometry ($disk); open (PLN, ">", $pln) or die "$pln: create: $!\n"; print PLN <{FILENAME}; my ($size) = -s $file; die "$file: stat: $!\n" if !defined $size; die "$file: size not a multiple of 512 bytes\n" if $size % 512; - my ($cylinders) = int ($size / (512 * 16 * 63)); - $cylinders++ if $size % (512 * 16 * 63); + my ($cyl_size) = 512 * 16 * 63; + my ($cylinders) = ceil ($size / $cyl_size); + extend_disk ($disk, $cylinders * $cyl_size) if $size % $cyl_size; return (CAPACITY => $size / 512, C => $cylinders,