[PATCH 0/2] more flexible image conversion

[Patrick Ohly <patrick.ohly@intel.com>]

In Ostro OS (https://ostroproject.org) we have a custom image class
which creates a whole-disk image
(https://github.com/ostroproject/meta-ostro/blob/master/meta-ostro/classes/image-dsk.bbclass).

Currently that class is more complex than it should be because it
re-implements image compression and conversion to VirtualBox, due to
limitations in OE-core's image.bbclass and because we wanted to get
rid of the redundant and misleading ".rootfs" suffix in image file
names.

These two patches make it possible to simplify the custom code to just
the actual dsk image and leverage OE-core for the rest.

The removal of the ".rootfs" suffix would also make sense for
OE-core. The first commit can be seen as a first step towards that. It
does not change the default, so nothing changes yet, but interested
distros or users can already get rid of the suffix by overriding the
IMAGE_NAME_SUFFIX variable.

https://bugzilla.yoctoproject.org/show_bug.cgi?id=9076 describes the
problem and probably can be considered resolved by these changes.

The following changes since commit 331ad5c5f80044a5e82abca0e87a85b162126411:

  mtools: Drop GCONV_PATH manipulation (2016-03-07 12:41:09 +0000)

are available in the git repository at:

  git://github.com/pohly/openembedded-core image-conversion
  https://github.com/pohly/openembedded-core/tree/image-conversion

Patrick Ohly (2):
  image creation: allow overriding .rootfs suffix
  image.bbclass: support chaining compression (aka conversion) commands

 meta/classes/image.bbclass       | 29 +++++++++++++++---
 meta/classes/image_types.bbclass | 63 ++++++++++++++++++++++------------------
 2 files changed, 59 insertions(+), 33 deletions(-)

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