[gnome-continuous-yocto/gnomeostree-3.28-rocko: 6311/8267] wic: implement removing files

[Emmanuele Bassi <ebassi src gnome org>]

commit c5fadce5f90c7e49cb5e40943f1c38f95cc13588
Author: Ed Bartosh <ed bartosh linux intel com>
Date:   Tue Jun 13 14:22:12 2017 +0300

    wic: implement removing files
    
    Added implementation of Disk.del method and wic_r
    function that removes files from the vfat partition
    using mdel utility.
    
    [YOCTO #11283]
    
    (From OE-Core rev: 4abf2d2643c58322d96d63d5f3ffaf52d62c6792)
    
    Signed-off-by: Ed Bartosh <ed bartosh linux intel com>
    Signed-off-by: Richard Purdie <richard purdie linuxfoundation org>

 scripts/lib/wic/engine.py |   16 +++++++++++++++-
 1 files changed, 15 insertions(+), 1 deletions(-)
---
diff --git a/scripts/lib/wic/engine.py b/scripts/lib/wic/engine.py
index 9a8055c..6fc8bb7 100644
--- a/scripts/lib/wic/engine.py
+++ b/scripts/lib/wic/engine.py
@@ -238,6 +238,7 @@ class Disk:
         self._partitions = None
         self._mdir = None
         self._mcopy = None
+        self._mdel = None
         self._partimages = {}
 
         # find parted
@@ -285,6 +286,10 @@ class Disk:
     def mcopy(self):
         return self._prop("mcopy")
 
+    @property
+    def mdel(self):
+        return self._prop("mdel")
+
     def _get_part_image(self, pnum):
         if pnum not in self.partitions:
             raise WicError("Partition %s is not in the image")
@@ -318,6 +323,14 @@ class Disk:
         exec_cmd(cmd)
         self._put_part_image(pnum)
 
+    def remove(self, pnum, path):
+        """Remove files/dirs from the partition."""
+        cmd = "{} -i {} ::{}".format(self.mdel,
+                                     self._get_part_image(pnum),
+                                     path)
+        exec_cmd(cmd)
+        self._put_part_image(pnum)
+
 def wic_ls(args, native_sysroot):
     """List contents of partitioned image or vfat partition."""
     disk = Disk(args.path.image, native_sysroot)
@@ -345,7 +358,8 @@ def wic_rm(args, native_sysroot):
     Remove files or directories from the vfat partition of
     partitioned image.
     """
-    pass
+    disk = Disk(args.path.image, native_sysroot)
+    disk.remove(args.path.part, args.path.path)
 
 def find_canned(scripts_path, file_name):
     """