From 10404b2a580be87ed7fbd5dbb25d0f71bedb56cd Mon Sep 17 00:00:00 2001
From: Maarten Vanraes <alien@mageia.org>
Date: Sat, 6 Aug 2016 14:33:08 +0200
Subject: Mountable: allow to get mountsource in order to match later

---
 lib/ManaTools/Shared/disk_backend/Mountable.pm    | 33 +++++++++++++++++++++++
 lib/ManaTools/Shared/disk_backend/Plugin/Btrfs.pm | 15 +++++++++++
 lib/ManaTools/Shared/disk_backend/Plugin/Extfs.pm | 11 ++++++++
 lib/ManaTools/Shared/disk_backend/Plugin/Mount.pm | 11 ++++++++
 4 files changed, 70 insertions(+)

diff --git a/lib/ManaTools/Shared/disk_backend/Mountable.pm b/lib/ManaTools/Shared/disk_backend/Mountable.pm
index 33cb1463..441333e2 100644
--- a/lib/ManaTools/Shared/disk_backend/Mountable.pm
+++ b/lib/ManaTools/Shared/disk_backend/Mountable.pm
@@ -61,6 +61,39 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 
 use Moose::Role;
 
+requires '_get_mount_source';
+
+has 'mountsource' => (
+    is => 'ro',
+    isa => 'Maybe[Str]',
+);
+
+around 'mountsource' => sub {
+    my $orig = shift;
+    my $self = shift;
+
+    return $self->_get_mount_source();
+};
+
+has 'mountsourcepath' => (
+    is => 'ro',
+    isa => 'Str',
+    default => '/',
+);
+
+sub mountsourcedevice {
+    my $self = shift;
+    my $mountsource = $self->mountsource();
+    my @s = stat($mountsource);
+    # check if found and blockdevice
+    return $mountsource if (scalar(@s) < 7 || ($s[2] >> 12) != 6);
+
+    # get the major and minor
+    my $minor = $s[6] % 256;
+    my $major = int (($s[6] - $minor) / 256);
+    return $major .':'. $minor;
+}
+
 #=============================================================
 
 =head2 find_path
diff --git a/lib/ManaTools/Shared/disk_backend/Plugin/Btrfs.pm b/lib/ManaTools/Shared/disk_backend/Plugin/Btrfs.pm
index 508a298d..9ee2a06e 100644
--- a/lib/ManaTools/Shared/disk_backend/Plugin/Btrfs.pm
+++ b/lib/ManaTools/Shared/disk_backend/Plugin/Btrfs.pm
@@ -228,6 +228,21 @@ extends 'ManaTools::Shared::disk_backend::Part';
 
 use MooseX::ClassAttribute;
 
+with 'ManaTools::Shared::disk_backend::Mountable';
+
+sub _get_mount_source {
+    my $self = shift;
+    my $fs = $self->fs();
+
+    # TODO: multiple parents
+    # get parent partlink (which should be a blockdevice anyway)
+    my $parent = $fs->find_part(undef, 'parent');
+    return undef if (!defined $parent);
+
+    # return parent's devicepath
+    return $parent->devicepath();
+}
+
 class_has '+type' => (
     default => 'BtrfsVol'
 );
diff --git a/lib/ManaTools/Shared/disk_backend/Plugin/Extfs.pm b/lib/ManaTools/Shared/disk_backend/Plugin/Extfs.pm
index 4dc6de27..84f8aca4 100644
--- a/lib/ManaTools/Shared/disk_backend/Plugin/Extfs.pm
+++ b/lib/ManaTools/Shared/disk_backend/Plugin/Extfs.pm
@@ -181,6 +181,17 @@ use MooseX::ClassAttribute;
 
 with 'ManaTools::Shared::disk_backend::Mountable';
 
+sub _get_mount_source {
+    my $self = shift;
+
+    # get parent partlink (which should be a blockdevice anyway)
+    my $parent = $self->find_part(undef, 'parent');
+    return undef if (!defined $parent);
+
+    # return parent's devicepath
+    return $parent->devicepath();
+}
+
 class_has '+type' => (
     default => 'Extfs'
 );
diff --git a/lib/ManaTools/Shared/disk_backend/Plugin/Mount.pm b/lib/ManaTools/Shared/disk_backend/Plugin/Mount.pm
index f93c4e6d..96aa6227 100644
--- a/lib/ManaTools/Shared/disk_backend/Plugin/Mount.pm
+++ b/lib/ManaTools/Shared/disk_backend/Plugin/Mount.pm
@@ -567,6 +567,7 @@ extends 'ManaTools::Shared::disk_backend::Part';
 use MooseX::ClassAttribute;
 
 with 'ManaTools::Shared::disk_backend::FileSystem';
+with 'ManaTools::Shared::disk_backend::Mountable';
 
 class_has '+type' => (
     default => 'UnknownFS'
@@ -589,5 +590,15 @@ class_has '+restrictions' => (
     }
 );
 
+sub _get_mount_source {
+    my $self = shift;
+
+    # get parent partlink (which should be a blockdevice anyway)
+    my $parent = $self->find_part(undef, 'parent');
+    return undef if (!defined $parent);
+
+    # return parent's devicepath
+    return $parent->devicepath();
+}
 
 1;
-- 
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