[gnome-continuous-yocto/gnomeostree-3.28-rocko: 14/218] wic: support filesystem label for rawcopy

[Emmanuele Bassi <ebassi src gnome org>]

commit aa5127d27933a2662ebaa054e35fb1f5262804bb
Author: Martin Hundebøll <mnhu prevas dk>
Date:   Mon Dec 11 08:12:42 2017 +0100

    wic: support filesystem label for rawcopy
    
    The '--label' argument should work for '--source rawcopy' as it does for
    '--source rootfs', so add a method in RawCopyPlugin to update the label
    on the temporary filesystem images.
    
    (From OE-Core rev: 913b31985b2fc8b7e17bc29d668168ab25ff989e)
    
    Signed-off-by: Martin Hundebøll <mnhu prevas dk>
    Signed-off-by: Ross Burton <ross burton intel com>
    Signed-off-by: Richard Purdie <richard purdie linuxfoundation org>

 scripts/lib/wic/plugins/source/rawcopy.py |   22 ++++++++++++++++++++++
 1 files changed, 22 insertions(+), 0 deletions(-)
---
diff --git a/scripts/lib/wic/plugins/source/rawcopy.py b/scripts/lib/wic/plugins/source/rawcopy.py
index 424ed26..e86398a 100644
--- a/scripts/lib/wic/plugins/source/rawcopy.py
+++ b/scripts/lib/wic/plugins/source/rawcopy.py
@@ -32,6 +32,25 @@ class RawCopyPlugin(SourcePlugin):
 
     name = 'rawcopy'
 
+    @staticmethod
+    def do_image_label(fstype, dst, label):
+        if fstype.startswith('ext'):
+            cmd = 'tune2fs -L %s %s' % (label, dst)
+        elif fstype in ('msdos', 'vfat'):
+            cmd = 'dosfslabel %s %s' % (dst, label)
+        elif fstype == 'btrfs':
+            cmd = 'btrfs filesystem label %s %s' % (dst, label)
+        elif fstype == 'swap':
+            cmd = 'mkswap -L %s %s' % (label, dst)
+        elif fstype == 'squashfs':
+            raise WicError("It's not possible to update a squashfs "
+                           "filesystem label '%s'" % (label))
+        else:
+            raise WicError("Cannot update filesystem label: "
+                           "Unknown fstype: '%s'" % (fstype))
+
+        exec_cmd(cmd)
+
     @classmethod
     def do_prepare_partition(cls, part, source_params, cr, cr_workdir,
                              oe_builddir, bootimg_dir, kernel_dir,
@@ -66,4 +85,7 @@ class RawCopyPlugin(SourcePlugin):
         if filesize > part.size:
             part.size = filesize
 
+        if part.label:
+            RawCopyPlugin.do_image_label(part.fstype, dst, part.label)
+
         part.source_file = dst