From 0d2d453524cd5bdd97f0ecdc83955f7f2c26bc6e Mon Sep 17 00:00:00 2001
From: Francois Pons <fpons@mandriva.com>
Date: Wed, 9 Feb 2000 16:08:57 +0000
Subject: *** empty log message ***

---
 perl-install/partition_table_raw.pm | 42 +++++++++++++++++++++++--------------
 1 file changed, 26 insertions(+), 16 deletions(-)

(limited to 'perl-install')

diff --git a/perl-install/partition_table_raw.pm b/perl-install/partition_table_raw.pm
index 2acd60004..a08cffecd 100644
--- a/perl-install/partition_table_raw.pm
+++ b/perl-install/partition_table_raw.pm
@@ -36,32 +36,44 @@ sub cylinder_size($) {
     $hd->{geom}{sectors} * $hd->{geom}{heads};
 }
 
+#- defaults methods for adjusting start and end for partitions, these
+#- methods will shrink the partition inside current limits, but think
+#- of this: hidden extended partitions that contains logical ones are
+#- not specified, so end is always almost above a cylinders boundaries
+#- by the start of a logical partitions (sectors, ie 63 generally) inside
+#- its hidden extended containers. so for adjustEnd, it is very important
+#- to round_down to cylinder boundarie else partitions will overlap.
+#- furthermore on the interface, choosing 1Mb more is possible that
+#- will go again beyond the normal cylinders boundaries, which may
+#- cause overlaping partitions again :-(
+#- until all the code in diskdrake is not cleaned up perfectly, rounding
+#- down for the end is necessary.
 sub adjustStart($$) {
     my ($hd, $part) = @_;
     my $end = $part->{start} + $part->{size};
 
     $part->{start} = round_up($part->{start},
-			       $part->{start} % cylinder_size($hd) < 2 * $hd->{geom}{sectors} ?
-			       $hd->{geom}{sectors} : cylinder_size($hd));
+			      $part->{start} % cylinder_size($hd) < 2 * $hd->{geom}{sectors} ?
+   			      $hd->{geom}{sectors} : cylinder_size($hd));
     $part->{size} = $end - $part->{start};
 }
 sub adjustEnd($$) {
     my ($hd, $part) = @_;
     my $end = $part->{start} + $part->{size};
-    my $end2 = round_up($end, cylinder_size($hd));
-    $end2 = $hd->{geom}{cylinders} * cylinder_size($hd) if $end2 > $hd->{geom}{cylinders} * cylinder_size($hd);
+    my $end2 = round_down($end, cylinder_size($hd));
+    unless ($part->{start} < $end2) {
+	$end2 = round_up($end, cylinder_size($hd));
+    }
     $part->{size} = $end2 - $part->{start};
 }
-#- previous version of adjustEnd, should check for numbers about partition start/end.
-#sub adjustEnd($$) {
-#    my ($hd, $part) = @_;
-#    my $end = $part->{start} + $part->{size};
-#    my $end2 = round_down($end, cylinder_size($hd));
-#    unless ($part->{start} < $end2) {
-#	$end2 = round_up($end, cylinder_size($hd));
-#    }
-#    $part->{size} = $end2 - $part->{start};
-#}
+#- this method could be used for when partitions informations will be accurate.
+#- sub adjustEnd($$) {
+#-     my ($hd, $part) = @_;
+#-     my $end = $part->{start} + $part->{size} - $hd->{geom}{sectors} - 1; #- magically reduces the end, will be rounded up.
+#-     my $end2 = round_up($end, cylinder_size($hd));
+#-     $end2 = $hd->{geom}{cylinders} * cylinder_size($hd) if $end2 > $hd->{geom}{cylinders} * cylinder_size($hd);
+#-     $part->{size} = $end2 - $part->{start};
+#-}
 
 sub get_geometry($) {
     my ($dev) = @_;
@@ -85,8 +97,6 @@ sub kernel_read($) {
     local *F; openit($hd, *F) or return 0;
     sync(); sleep(1);
     $hd->{rebootNeeded} = !ioctl(F, c::BLKRRPART(), 0);
-    sync(); sleep(1);
-    $hd->{rebootNeeded} = !ioctl(F, c::BLKRRPART(), 0);
     sync();
     close F;
     sync(); sleep(1);
-- 
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