wic: make sure that partition size is always an integer in internal processing

The size field of Partition class is expected to be an integer and ought
to be set inside prepare_*() method. Make sure that this is always the
case.

(From OE-Core rev: a37838f995ae642b0b8bdd47a605a264fb3bf200)

Signed-off-by: Maciej Borzecki <maciej.borzecki@rndity.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/lib/wic/partition.py

@@ -146,6 +146,12 @@ class Partition():
                                                      oe_builddir,
                                                      bootimg_dir, kernel_dir, rootfs_dir,
                                                      native_sysroot)
+        # further processing required Partition.size to be an integer, make
+        # sure that it is one
+        if type(self.size) is not int:
+            msger.error("Partition %s internal size is not an integer. " \
+                          "This a bug in source plugin %s and needs to be fixed." \
+                          % (self.mountpoint, self.source))
 
     def prepare_rootfs_from_fs_image(self, cr_workdir, oe_builddir,
                                      rootfs_dir):
@@ -157,7 +163,7 @@ class Partition():
         out = exec_cmd(du_cmd)
         rootfs_size = out.split()[0]
 
-        self.size = rootfs_size
+        self.size = int(rootfs_size)
         self.source_file = rootfs
 
     def prepare_rootfs(self, cr_workdir, oe_builddir, rootfs_dir,
@@ -194,7 +200,7 @@ class Partition():
                 # get the rootfs size in the right units for kickstart (kB)
                 du_cmd = "du -Lbks %s" % rootfs
                 out = exec_cmd(du_cmd)
-                self.size = out.split()[0]
+                self.size = int(out.split()[0])
 
                 break
 
@@ -379,7 +385,7 @@ class Partition():
         out = exec_cmd(du_cmd)
         fs_size = out.split()[0]
 
-        self.size = fs_size
+        self.size = int(fs_size)
 
     def prepare_swap_partition(self, cr_workdir, oe_builddir, native_sysroot):
         """

scripts/lib/wic/plugins/source/bootimg-efi.py

@@ -234,5 +234,5 @@ class BootimgEFIPlugin(SourcePlugin):
         out = exec_cmd(du_cmd)
         bootimg_size = out.split()[0]
 
-        part.size = bootimg_size
+        part.size = int(bootimg_size)
         part.source_file = bootimg

scripts/lib/wic/plugins/source/rawcopy.py

@@ -78,9 +78,9 @@ class RawCopyPlugin(SourcePlugin):
         # get the size in the right units for kickstart (kB)
         du_cmd = "du -Lbks %s" % dst
         out = exec_cmd(du_cmd)
-        filesize = out.split()[0]
+        filesize = int(out.split()[0])
 
-        if int(filesize) > int(part.size):
+        if filesize > part.size:
             part.size = filesize
 
         part.source_file = dst