[PATCH 08/14] Add minSize and maxSize properties to StorageDevice and PartitionDevice.

[David Cantrell <dcantrell@xxxxxxxxxx>]

These properties take in to account the minimum and maximum sizes
imposed by the device and partition type currently in use as well
as the minimum and maximum sizes imposed by the DeviceFormat type
on the device.
---
 storage/devices.py |   41 +++++++++++++++++++++++++++++++++++++++++
 1 files changed, 41 insertions(+), 0 deletions(-)

diff --git a/storage/devices.py b/storage/devices.py
index 3cc2599..2301e8b 100644
--- a/storage/devices.py
+++ b/storage/devices.py
@@ -477,6 +477,25 @@ class StorageDevice(Device):
         return size
 
     @property
+    def minSize(self):
+        """ The minimum size this device can be. """
+        if self.format:
+            return self.format.minSize
+        else:
+            return self.size
+
+    @property
+    def maxSize(self):
+        """ The maximum size this device can be. """
+        if self.format:
+            if self.format.maxSize > self.currentSize:
+                return self.currentSize
+            else:
+                return self.format.maxSize
+        else:
+            return self.currentSize
+
+    @property
     def status(self):
         """ This device's status.
 
@@ -1033,6 +1052,28 @@ class PartitionDevice(StorageDevice):
 
     disk = property(lambda p: p._getDisk(), lambda p,d: p._setDisk(d))
 
+    @property
+    def minSize(self):
+        """ The minimum size this partition can be. """
+        if self.format:
+            return self.format.minSize
+        else:
+            return self.size
+
+    @property
+    def maxSize(self):
+        """ The maximum size this partition can be. """
+        # XXX: this is MB by default
+        max = self.partedPartition.getMaxAvailableSize()
+
+        if self.format:
+            if self.format.maxSize > max:
+                return max
+            else:
+                return self.format.maxSize
+        else:
+            return self.max
+
 
 class DMDevice(StorageDevice):
     """ A device-mapper device """
-- 
1.6.1.3

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