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# Copyright (c) 2006, 2007 - OpenSLX GmbH
#
# This program is free software distributed under the GPL version 2.
# See http://openslx.org/COPYING
#
# If you have any feedback please consult http://openslx.org/feedback and
# send your suggestions, praise, or complaints to feedback@openslx.org
#
# General information about OpenSLX can be found at http://openslx.org/
# -----------------------------------------------------------------------------
# Base.pm
# - provides empty base of the OpenSLX OSExport::FileSystem API.
# -----------------------------------------------------------------------------
package OpenSLX::OSExport::FileSystem::Base;
use strict;
use warnings;
our $VERSION = 1.01; # API-version . implementation-version
use File::Basename;
use Scalar::Util qw( weaken );
use OpenSLX::Basics;
use OpenSLX::Utils;
################################################################################
### interface methods
################################################################################
sub new
{
confess "Creating OpenSLX::OSExport::FileSystem::Base-objects directly makes no sense!";
}
sub initialize
{
my $self = shift;
my $engine = shift;
$self->{'engine'} = $engine;
weaken($self->{'engine'});
# avoid circular reference between file-system and its engine
}
sub exportVendorOS
{
}
sub purgeExport
{
}
sub checkRequirements
{
return 1;
}
sub addExportToConfigDB
{
my $self = shift;
my $export = shift;
my $openslxDB = shift;
return $openslxDB->addExport($export);
}
sub generateExportURI
{
}
sub requiredFSMods
{
}
sub requiredFSTools
{
}
sub showExportConfigInfo
{
}
################################################################################
### implementation methods
################################################################################
sub _pickKernelVersion
{
my $self = shift;
my $vendorOSPath = shift;
my $kernel = followLink("$vendorOSPath/boot/vmlinuz");
if (!-e $kernel) {
# 'vmlinuz'-link doesn't exist, so we have to pick the kernel manually
my $osSetupEngine = instantiateClass("OpenSLX::OSSetup::Engine");
$osSetupEngine->initialize($self->{engine}->{'vendor-os-name'}, 'none');
$kernel = $osSetupEngine->pickKernelFile("$vendorOSPath/boot");
}
my $kernelName = basename($kernel);
if ($kernelName !~ m[-(.+)$]) {
die _tr("unable to determine version of kernel '%s'!", $kernelName);
}
return $1;
}
sub _locateKernelModule
{
my $self = shift;
my $vendorOSPath = shift;
my $moduleName = shift;
my $defaultPaths = shift;
vlog(1, _tr("locating kernel-module '%s'", $moduleName));
# check default paths first:
foreach my $defPath (@$defaultPaths) {
vlog(2, "trying $defPath/$moduleName");
my $target = followLink("$defPath/$moduleName", $vendorOSPath);
return $target unless !-e $target;
}
# use brute force to search for the newest incarnation of the module:
use File::Find;
my $location;
my $locationAge = 9999999;
vlog(2, "searching in $vendorOSPath/lib/modules");
find sub {
return unless $_ eq $moduleName;
if (-M _ < $locationAge) {
$locationAge = -M _;
$location = $File::Find::name;
vlog(2, "located at $location (age=$locationAge days)");
}
}, "$vendorOSPath/lib/modules";
if (defined $location) {
return followLink($location, $vendorOSPath);
}
return;
}
1;
################################################################################
=pod
=head1 NAME
OpenSLX::OSExport::FileSystem::Base - the base class for all OSExport::FileSystems
=cut
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