From 1ea3578bfb4c6b4ef7b3854ce4561d8bc9afaef4 Mon Sep 17 00:00:00 2001
From: Pascal Rigaux <pixel@mandriva.com>
Date: Fri, 17 Sep 2004 10:33:54 +0000
Subject: try to get geometry from EDD

---
 perl-install/fsedit.pm              | 10 ++++----
 perl-install/partition_table/dos.pm | 17 +++++++++++++-
 perl-install/partition_table/raw.pm | 46 ++++++++++++++++++++++++++++++++++++-
 3 files changed, 67 insertions(+), 6 deletions(-)

diff --git a/perl-install/fsedit.pm b/perl-install/fsedit.pm
index ddc6a47fd..1072464c7 100644
--- a/perl-install/fsedit.pm
+++ b/perl-install/fsedit.pm
@@ -104,14 +104,16 @@ sub get_hds {
 
     my @drives = detect_devices::hds();
 
-    my (@hds, @raw_hds);
     foreach my $hd (@drives) {
 	$hd->{file} = devices::make($hd->{device});
 	$hd->{prefix} ||= $hd->{device};
-	$hd->{readonly} = $flags->{readonly};
+    }
+
+    partition_table::raw::get_geometries(\@drives);
 
-	my $h = partition_table::raw::get_geometry($hd->{file}) or log::l("An error occurred while getting the geometry of block device $hd->{file}: $!"), next;
-	add2hash_($hd, $h);
+    my (@hds, @raw_hds);
+    foreach my $hd (@drives) {
+	$hd->{readonly} = $flags->{readonly};
 
 	eval { partition_table::raw::test_for_bad_drives($hd) };
 	if (my $err = $@) {
diff --git a/perl-install/partition_table/dos.pm b/perl-install/partition_table/dos.pm
index 8c30e6558..8a24cec84 100644
--- a/perl-install/partition_table/dos.pm
+++ b/perl-install/partition_table/dos.pm
@@ -124,6 +124,21 @@ sub guess_geometry_from_partition_table {
     $geom;
 }
 
+sub geometry_from_edd {
+    my ($hd, $edd_dir) = @_;
+
+    my $geom = { sectors => 0 + cat_("$edd_dir/legacy_sectors_per_track"), 
+		 heads => 1 + cat_("$edd_dir/legacy_max_head"),
+		 from_edd => 1 };
+    partition_table::raw::compute_nb_cylinders($geom, $hd->{totalsectors});
+
+    log::l("geometry_from_edd $hd->{device} $hd->{volume_id}: " . geometry_to_string($geom));
+    
+    member($geom->{heads}, @valid_nb_heads) && member($geom->{sectors}, @valid_nb_sectors) 
+      && $geom;
+}
+
+
 sub try_every_geometry {
     my ($hd) = @_;
 
@@ -148,7 +163,7 @@ sub set_best_geometry_for_the_partition_table {
 
     my $guessed_geom = guess_geometry_from_partition_table($hd);
     if ($guessed_geom->{empty}) {
-	log::l("$hd->{device}: would need looking at BIOS info to find out geometry");
+	log::l("$hd->{device}: would need looking at BIOS info to find out geometry") if !$hd->{geom}{from_edd};
 	return;
     } 
     my $default_ok = is_geometry_valid_for_the_partition_table($hd, $hd->{geom}, 0);
diff --git a/perl-install/partition_table/raw.pm b/perl-install/partition_table/raw.pm
index 8cbe0ec14..59ca08906 100644
--- a/perl-install/partition_table/raw.pm
+++ b/perl-install/partition_table/raw.pm
@@ -94,7 +94,51 @@ sub compute_nb_cylinders {
     $geom->{cylinders} = int $totalsectors / $geom->{heads} / $geom->{sectors};
 }
 
-sub get_geometry($) {
+sub keep_non_duplicates {
+    my %l;
+    $l{$_->[0]}++ foreach @_;
+    map { @$_ } grep { $l{$_->[0]} == 1 } @_;
+}
+
+sub get_geometries {
+    my ($hds) = @_;
+
+    foreach my $hd (@$hds) {
+	my $h = get_geometry($hd->{file}) or log::l("An error occurred while getting the geometry of block device $hd->{file}: $!"), next;
+	add2hash_($hd, $h);
+    }
+
+    my %id2hd = keep_non_duplicates(map {
+	my $F = openit($_) or die "failed to open device $_->{device}";
+	my $tmp;
+	if (c::lseek_sector(fileno($F), 0, 0x1b8) && sysread($F, $tmp, 4)) {
+	    [ sprintf('0x%08x', unpack('V', $tmp)), $_ ];
+	} else {
+	    ();
+	}
+    } @$hds);
+
+
+    my %id2edd = keep_non_duplicates(map { [ chomp_(cat_("$_/mbr_signature")), $_ ] } glob("/sys/firmware/edd/int13_dev*"));
+
+    log::l("id2hd: " . join(' ', map_each { "$::a=>$::b->{device}" } %id2hd));
+    log::l("id2edd: " . join(' ', map_each { "$::a=>$::b" } %id2edd));
+
+    foreach my $id (keys %id2hd) {
+	my $hd = $id2hd{$id};
+	$hd->{volume_id} = $id;
+
+	if (my $edd_dir = $id2edd{$id}) {
+	    $hd->{bios_from_edd} = $1 if $edd_dir =~ /int13_dev(.*)/;
+
+	    require partition_table::dos;
+	    my $geom = partition_table::dos::geometry_from_edd($hd, $edd_dir);
+	    $hd->{geom} = $geom if $geom;
+	}
+    }
+}
+
+sub get_geometry {
     my ($dev) = @_;
     my $g = "";
 
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