Hello,
I added a feature to wic. It can create a partition from a subdirectory of
an image and preserves permissions, the owner and the group of the files.
Here's an exemple on how I use it in a wks file to create a different
partition for the home directory.
part /home --source rootfs --rootfs-dir=core-image-base:/home --size 500
--ondisk mmcblk --fstype=ext4 --label APPS --align 4096
Here is the patch.
diff --git a/scripts/lib/wic/partition.py b/scripts/lib/wic/partition.py
index 3da7e23..580abcb 100644
--- a/scripts/lib/wic/partition.py
+++ b/scripts/lib/wic/partition.py
@@ -202,7 +202,7 @@ class Partition():
(self.mountpoint, self.size, self.fixed_size))
def prepare_rootfs(self, cr_workdir, oe_builddir, rootfs_dir,
- native_sysroot, real_rootfs = True):
+ native_sysroot, real_rootfs = True, folder = ""):
"""
Prepare content for a rootfs partition i.e. create a partition
and fill it from a /rootfs dir.
@@ -241,7 +241,7 @@ class Partition():
prefix = "ext" if self.fstype.startswith("ext") else self.fstype
method = getattr(self, "prepare_rootfs_" + prefix)
- method(rootfs, oe_builddir, rootfs_dir, native_sysroot, pseudo)
+ method(rootfs, oe_builddir, rootfs_dir + folder, native_sysroot,
pseudo)
self.source_file = rootfs
# get the rootfs size in the right units for kickstart (kB)
diff --git a/scripts/lib/wic/plugins/source/rootfs.py
b/scripts/lib/wic/plugins/source/rootfs.py
index aec720f..8861156 100644
--- a/scripts/lib/wic/plugins/source/rootfs.py
+++ b/scripts/lib/wic/plugins/source/rootfs.py
@@ -81,6 +81,13 @@ class RootfsPlugin(SourcePlugin):
raise WicError("Couldn't find --rootfs-dir=%s connection
or "
"it is not a valid path, exiting" %
part.rootfs_dir)
+ # You can select the subfolder of an image by using ":" to
separate the image name and the sub folder name.
+ # i.e. --rootfs-dir=core-image-base:/home
+ folder = ""
+ folder_index = rootfs_dir.find(":")
+ if folder_index >= 0:
+ folder = rootfs_dir[folder_index + 1:]
+ rootfs_dir = rootfs_dir[:folder_index]
part.rootfs_dir = cls.__get_rootfs_dir(rootfs_dir)
new_rootfs = None
@@ -123,4 +130,4 @@ class RootfsPlugin(SourcePlugin):
shutil.rmtree(full_path)
part.prepare_rootfs(cr_workdir, oe_builddir,
- new_rootfs or part.rootfs_dir, native_sysroot)
+ new_rootfs or part.rootfs_dir, native_sysroot,
True, folder)
I hope you will consider adding it to wic.
Thank you.
--
Patrick Gauvin
--
_______________________________________________
Openembedded-core mailing list
Openembedded-core@lists.openembedded.org
http://lists.openembedded.org/mailman/listinfo/openembedded-core
