It will omit the given path from the resulting partition, and if the
given path ends in a slash, it will only delete the content, and keep
the directory.
Since mkfs only accepts whole directories as input, we need to copy
the rootfs directory to the workdir so that we can selectively delete
files from it.
Since we want to use the copyhardlinktree() function, we need to put
the generic oe lib in the module search path.
Signed-off-by: Kristian Amlie <kristian.am...@mender.io>
---
scripts/lib/wic/help.py | 6 +++++
scripts/lib/wic/ksparser.py | 1 +
scripts/lib/wic/partition.py | 1 +
scripts/lib/wic/plugins/source/rootfs.py | 43 +++++++++++++++++++++++++++++++-
scripts/wic | 2 ++
5 files changed, 52 insertions(+), 1 deletion(-)
diff --git a/scripts/lib/wic/help.py b/scripts/lib/wic/help.py
index daa11bf..4d48fb7 100644
--- a/scripts/lib/wic/help.py
+++ b/scripts/lib/wic/help.py
@@ -721,6 +721,12 @@ DESCRIPTION
partition table. It may be useful for
bootloaders.
+ --exclude-path: This option is specific to wic. It excludes the given
+ absolute path from the resulting image. If the path
+ ends with a slash, only the content of the directory
+ is omitted, not the directory itself. This option only
+ has an effect with the rootfs source plugin.
+
--extra-space: This option is specific to wic. It adds extra
space after the space filled by the content
of the partition. The final size can go
diff --git a/scripts/lib/wic/ksparser.py b/scripts/lib/wic/ksparser.py
index 62c4902..56a12b0 100644
--- a/scripts/lib/wic/ksparser.py
+++ b/scripts/lib/wic/ksparser.py
@@ -130,6 +130,7 @@ class KickStart():
part.add_argument('mountpoint', nargs='?')
part.add_argument('--active', action='store_true')
part.add_argument('--align', type=int)
+ part.add_argument('--exclude-path', nargs='+')
part.add_argument("--extra-space", type=sizetype)
part.add_argument('--fsoptions', dest='fsopts')
part.add_argument('--fstype')
diff --git a/scripts/lib/wic/partition.py b/scripts/lib/wic/partition.py
index aa8f8a7..9c130c4 100644
--- a/scripts/lib/wic/partition.py
+++ b/scripts/lib/wic/partition.py
@@ -45,6 +45,7 @@ class Partition():
self.align = args.align
self.disk = args.disk
self.extra_space = args.extra_space
+ self.exclude_path = args.exclude_path
self.fsopts = args.fsopts
self.fstype = args.fstype
self.label = args.label
diff --git a/scripts/lib/wic/plugins/source/rootfs.py
b/scripts/lib/wic/plugins/source/rootfs.py
index 425da8b..794ad69 100644
--- a/scripts/lib/wic/plugins/source/rootfs.py
+++ b/scripts/lib/wic/plugins/source/rootfs.py
@@ -26,10 +26,13 @@
#
import os
+import shutil
+
+from oe.path import copyhardlinktree
from wic import msger
from wic.pluginbase import SourcePlugin
-from wic.utils.oe.misc import get_bitbake_var
+from wic.utils.oe.misc import get_bitbake_var, exec_cmd
class RootfsPlugin(SourcePlugin):
"""
@@ -78,6 +81,44 @@ class RootfsPlugin(SourcePlugin):
real_rootfs_dir = cls.__get_rootfs_dir(rootfs_dir)
+ # Handle excluded paths.
+ if part.exclude_path is not None:
+ # We need a new rootfs directory we can delete files from. Copy to
+ # workdir.
+ new_rootfs = os.path.join(cr_workdir, "rootfs")
+
+ if os.path.lexists(new_rootfs):
+ shutil.rmtree(os.path.join(new_rootfs))
+
+ copyhardlinktree(real_rootfs_dir, new_rootfs)
+
+ real_rootfs_dir = new_rootfs
+
+ for orig_path in part.exclude_path:
+ path = orig_path
+ if os.path.isabs(path):
+ msger.error("Must be relative: --exclude-path=%s" %
orig_path)
+
+ full_path = os.path.realpath(os.path.join(new_rootfs, path))
+
+ # Disallow climbing outside of parent directory using '..',
+ # because doing so could be quite disastrous (we will delete
the
+ # directory).
+ if not full_path.startswith(new_rootfs):
+ msger.error("'%s' points to a path outside the rootfs" %
orig_path)
+
+ if path.endswith(os.sep):
+ # Delete content only.
+ for entry in os.listdir(full_path):
+ full_entry = os.path.join(full_path, entry)
+ if os.path.isdir(full_entry) and not
os.path.islink(full_entry):
+ shutil.rmtree(full_entry)
+ else:
+ os.remove(full_entry)
+ else:
+ # Delete whole directory.
+ shutil.rmtree(full_path)
+
part.rootfs_dir = real_rootfs_dir
part.prepare_rootfs(cr_workdir, oe_builddir, real_rootfs_dir,
native_sysroot)
diff --git a/scripts/wic b/scripts/wic
index 1ad1666..4328ba5 100755
--- a/scripts/wic
+++ b/scripts/wic
@@ -41,6 +41,8 @@ from distutils import spawn
scripts_path = os.path.abspath(os.path.dirname(__file__))
lib_path = scripts_path + '/lib'
sys.path.insert(0, lib_path)
+oe_lib_path = os.path.join(os.path.dirname(scripts_path), 'meta', 'lib')
+sys.path.insert(0, oe_lib_path)
bitbake_exe = spawn.find_executable('bitbake')
if bitbake_exe:
--
2.7.4
--
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