[OE-core] [PATCH] wic: squashfs partition support

[Maciek Borzecki]

On śro, 2014-07-23 at 15:21 -0500, Tom Zanussi wrote:
> Hi, please include a description for this.
Ok, will update with the rest of the patches.

> 
> Also, it looks like this is missing the empty_partition() part?
That's intentional. Squashfs, being read-only, is not really useful for
a partition that is empty. You wouldn't be able to create files nor
actually use it in a meaningful manner, unless it's combined with one of
the merging filesystems like {union/au/overlay}fs. In this case the
whole fs setup would be described in fstab.

Though, it might make sense to raise a warning at least.


> 
> Thanks,
> 
> Tom
> 
> On Wed, 2014-07-23 at 12:37 +0200, Maciej Borzecki wrote:
> > Signed-off-by: Maciej Borzecki <maciej.borzecki at open-rnd.pl>
> > ---
> >  .../lib/mic/kickstart/custom_commands/partition.py | 26 ++++++++++++++++++++++
> >  1 file changed, 26 insertions(+)
> > 
> > diff --git a/scripts/lib/mic/kickstart/custom_commands/partition.py b/scripts/lib/mic/kickstart/custom_commands/partition.py
> > index d0f1b78..c4d0113 100644
> > --- a/scripts/lib/mic/kickstart/custom_commands/partition.py
> > +++ b/scripts/lib/mic/kickstart/custom_commands/partition.py
> > @@ -192,6 +192,10 @@ class Wic_PartData(Mic_PartData):
> >              return self.prepare_rootfs_vfat(cr_workdir, oe_builddir,
> >                                              rootfs_dir, native_sysroot,
> >                                              pseudo)
> > +        elif self.fstype.startswith("squashfs"):
> > +            return self.prepare_rootfs_squashfs(cr_workdir, oe_builddir,
> > +                                                rootfs_dir, native_sysroot,
> > +                                                pseudo)
> >  
> >      def prepare_rootfs_ext(self, cr_workdir, oe_builddir, rootfs_dir,
> >                             native_sysroot, pseudo):
> > @@ -324,6 +328,28 @@ class Wic_PartData(Mic_PartData):
> >          self.set_size(rootfs_size)
> >          self.set_source_file(rootfs)
> >  
> > +    def prepare_rootfs_squashfs(self, cr_workdir, oe_builddir, rootfs_dir,
> > +                                native_sysroot, pseudo):
> > +        """
> > +        Prepare content for a squashfs rootfs partition.
> > +        """
> > +        image_rootfs = rootfs_dir
> > +        rootfs = "%s/rootfs_%s.%s" % (cr_workdir, self.label ,self.fstype)
> > +
> > +        squashfs_cmd = "mksquashfs %s %s -noappend" % \
> > +                       (image_rootfs, rootfs)
> > +        rc, out = exec_native_cmd(pseudo + squashfs_cmd, native_sysroot)
> > +
> > +        # get the rootfs size in the right units for kickstart (Mb)
> > +        du_cmd = "du -Lbms %s" % rootfs
> > +        rc, out = exec_cmd(du_cmd)
> > +        rootfs_size = out.split()[0]
> > +
> > +        self.size = rootfs_size
> > +        self.source_file = rootfs
> > +
> > +        return 0
> > +
> >      def prepare_empty_partition(self, cr_workdir, oe_builddir, native_sysroot):
> >          """
> >          Prepare an empty partition.
> 
> 


-- 
Maciej Borzęcki
Senior Software Developer at Open-RnD Sp. z o.o., Poland
www.open-rnd.pl
mobile: +48 889 117 365, fax: +48 42 657 9079

Niniejsza wiadomość wraz z załącznikami może zawierać chronione prawem
lub poufne informacje i została wysłana wyłącznie do wiadomości i
użytku osób, do których została zaadresowana. Jeśli wiadomość została
otrzymana przypadkowo zabrania się jej kopiowania lub rozsyłania do
osób trzecich. W takim przypadku uprasza się o natychmiastowe
zniszczenie wiadomości oraz poinformowanie nadawcy o zaistniałej
sytuacji za pomocą wiadomości zwrotnej. Dziękujemy.

This message, including any attachments hereto, may contain privileged
or confidential information and is sent solely for the attention and
use of the intended addressee(s). If you are not an intended addressee,
you may neither use this message nor copy or deliver it to anyone. In
such case, you should immediately destroy this message and kindly notify
the sender by reply email. Thank you.