"See_The_Changelog"

1 files changed, 187 insertions, 0 deletions

diff --git a/perl-install/fsedit.pm b/perl-install/fsedit.pm
new file mode 100644
index 000000000..fb2703e8f
--- /dev/null
+++ b/perl-install/fsedit.pm
@@ -0,0 +1,187 @@
+package fsedit;
+
+use diagnostics;
+use strict;
+
+use common qw(:common);
+use partition_table qw(:types);
+use partition_table_raw;
+use devices;
+use log;
+
+1;
+
+my @suggestions = (
+  { mntpoint => "/boot",    minsize =>  10 << 11, size =>  16 << 11, type => 0x83 }, 
+  { mntpoint => "/",        minsize =>  50 << 11, size => 100 << 11, type => 0x83 }, 
+  { mntpoint => "swap",     minsize =>  30 << 11, size =>  60 << 11, type => 0x82 },
+  { mntpoint => "/usr",     minsize => 200 << 11, size => 500 << 11, type => 0x83 }, 
+  { mntpoint => "/home",    minsize =>  50 << 11, size => 200 << 11, type => 0x83 }, 
+  { mntpoint => "/var",     minsize => 200 << 11, size => 250 << 11, type => 0x83 }, 
+  { mntpoint => "/tmp",     minsize =>  50 << 11, size => 100 << 11, type => 0x83 }, 
+  { mntpoint => "/mnt/iso", minsize => 700 << 11, size => 800 << 11, type => 0x83 }, 
+);
+
+
+1;
+
+sub hds($$) {
+    my ($drives, $flags) = @_;
+    my @hds;
+    my $rc;
+
+    foreach (@$drives) {
+	my $file = devices::make($_->{device});
+
+	my $hd = partition_table_raw::get_geometry($file) or die "An error occurred while getting the geometry of block device $file: $!";
+	$hd->{file} = $file;
+	$hd->{prefix} = $hd->{device} = $_->{device};
+	# for RAID arrays of format c0d0p1 
+	$hd->{prefix} .= "p" if $hd->{prefix} =~ m,(rd|ida)/,;
+
+	eval { $rc = partition_table::read($hd, $flags->{clearall}) }; 
+	if ($@) {
+	    $@ =~ /bad magic number/ or die;
+	    $flags->{forcezero} && !$::testing ? partition_table_raw::zero_MBR($hd) : die;
+	}
+	$rc ? push @hds, $hd : log::l("An error occurred reading the partition table for the block device $_->{device}");
+    }
+    [ @hds ];
+}
+
+sub get_fstab(@) {
+    map { partition_table::get_normal_parts($_) } @_;
+}
+
+sub suggest_part($$$;$) {
+    my ($hd, $part, $hds, $suggestions) = @_;
+    $suggestions ||= \@suggestions;
+    foreach (@$suggestions) { $_->{minsize} ||= $_->{size} }
+
+    my $has_swap;
+    my @mntpoints = map { $has_swap ||= isSwap($_); $_->{mntpoint} } get_fstab(@$hds);
+    my %mntpoints; @mntpoints{@mntpoints} = undef;
+
+    my ($best, $second) = 
+      grep { $part->{size} >= $_->{minsize} }
+      grep { !exists $mntpoints{$_->{mntpoint}} || isSwap($_) && !$has_swap }
+	@$suggestions or return;
+
+    $best = $second if 
+      $best->{mntpoint} eq '/boot' && 
+      $part->{start} + $best->{minsize} > 1024 * partition_table::cylinder_size($hd); # if the empty slot is beyond the 1024th cylinder, no use having /boot
+
+    defined $best or return; # sorry no suggestion :(
+
+    $part->{mntpoint} = $best->{mntpoint};
+    $part->{type} = $best->{type};
+    $part->{size} = min($part->{size}, $best->{size});
+    1;
+}
+
+
+#sub partitionDrives {
+#
+#    my $cmd = "/sbin/fdisk";
+#    -x $cmd or $cmd = "/usr/bin/fdisk";
+#
+#    my $drives = findDrivesPresent() or die "You don't have any hard drives available! You probably forgot to configure a SCSI controller.";
+#
+#    foreach (@$drives) {
+#	 my $text = "/dev/" . $_->{device};
+#	 $text .= " - SCSI ID " . $_->{id} if $_->{device} =~ /^sd/;
+#	 $text .= " - Model " . $_->{info};
+#	 $text .= " array" if $_->{device} =~ /^c.d/;
+#
+#	 # truncate at 50 columns for now 
+#	 $text = substr $text, 0, 50;
+#    }
+#    #TODO TODO
+#}
+
+
+
+sub checkMountPoint($$) {
+#    my $type = shift;
+#    local $_ = shift;
+#
+#    m|^/| or die "The mount point $_ is illegal.\nMount points must begin with a leading /";
+#    m|(.)/$| and die "The mount point $_ is illegal.\nMount points may not end with a /";
+#    c::isprint($_) or die "The mount point $_ is illegal.\nMount points must be made of printable characters (no accents...)";
+#
+#    foreach my $dev (qw(/dev /bin /sbin /etc /lib)) {
+#	 /^$dev/ and die "The $_ directory must be on the root filesystem.",
+#    }
+#
+#    if ($type eq 'linux_native') {
+#	 $_ eq '/'; and return 1;
+#	 foreach my $r (qw(/var /tmp /boot /root)) {
+#	     /^$r/ and return 1;
+#	 }
+#	 die "The mount point $_ is illegal.\nSystem partitions must be on Linux Native partitions";
+#    }
+#    1;
+}
+
+sub removeFromList($$$) {
+    my ($start, $end, $list) = @_;
+    my $err = "error in removeFromList: removing an non-free block";
+
+    for (my $i = 0; $i < @$list; $i += 2) {
+	$start < $list->[$i] and die $err;
+	$start > $list->[$i + 1] and next;
+
+	if ($start == $list->[$i]) {
+	    $end > $list->[$i + 1] and die $err;
+	    if ($end == $list->[$i + 1]) {
+		# the free block is just the same size, removing it
+		splice(@$list, 0, 2);
+	    } else {
+		# the free block now start just after this block
+		$list->[$i] = $end;
+	    }
+	} else {
+	    $end <= $list->[$i + 1] or die $err;
+	    if ($end < $list->[$i + 1]) {
+		splice(@$list, $i + 2, 0, $end, $list->[$i + 1]);
+	    }
+	    $list->[$i + 1] = $start; # shorten the free block
+	}
+	return;
+    }
+}
+
+
+sub allocatePartitions($$) {
+    my ($hds, $to_add) = @_;
+    my %free_sectors = map { $_->{device} => [1, $_->{totalsectors} ] } @$hds; # first sector is always occupied by the MBR
+    my $remove = sub { removeFromList($_->{start}, $_->{start} + $_->{size}, $free_sectors{$_->{rootDevice}}) };
+    my $success = 0;
+
+    foreach (get_fstab(@$hds)) { &$remove(); }
+
+    FSTAB: foreach (@$to_add) {
+	foreach my $hd (@$hds) {
+	    my $v = $free_sectors{$hd->{device}};
+	    for (my $i = 0; $i < @$v; $i += 2) {
+		my $size = $v->[$i + 1] - $v->[$i];
+		$_->{size} > $size and next;
+		$_->{start} = $v->[$i];
+		$_->{rootDevice} = $hd->{device};
+		partition_table::adjustStartAndEnd($hd, $_);
+		&$remove();
+		partition_table::add($hd, $_);
+		$success++;
+		next FSTAB;
+	    }
+	}
+	log::ld("can't allocate partition $_->{mntpoint} of size $_->{size}, not enough room");
+    }
+    $success;
+}
+
+sub auto_allocate($;$) {
+    my ($hds, $suggestions) = @_;
+    allocatePartitions($hds, $suggestions || \@suggestions);
+    map { partition_table::assign_device_numbers($_) } @$hds;
+}