g Move 2: partition table: hierarchy

1 files changed, 36 insertions, 0 deletions

diff --git a/perl-install/partition_table/empty.pm b/perl-install/partition_table/empty.pm
new file mode 100644
index 000000000..e90991684
--- /dev/null
+++ b/perl-install/partition_table/empty.pm
@@ -0,0 +1,36 @@
+package partition_table::empty; # $Id$
+
+#- this is a mainly dummy partition table. If we find it's empty, we just call -
+#- zero_MBR which will take care of bless'ing us to the partition table type best
+#- suited
+
+
+use diagnostics;
+use strict;
+use vars qw(@ISA);
+
+@ISA = qw(partition_table::raw);
+
+use common;
+use partition_table::raw;
+use partition_table;
+use c;
+
+
+sub read($$) {
+    my ($hd, $sector) = @_;
+    my $tmp;
+
+    local *F; partition_table::raw::openit($hd, *F) or die "failed to open device";
+    c::lseek_sector(fileno(F), $sector, 0) or die "reading of partition in sector $sector failed";
+
+    #- check magic number
+    sysread F, $tmp, 512 or die "error reading magic number on disk $hd->{device}";
+    $tmp eq substr($tmp, 0, 1) x 512 or die "bad magic number on disk $hd->{device}";
+
+    partition_table::raw::zero_MBR($hd);
+
+    $hd->{primary}{raw};
+}
+
+1;