1 files changed, 134 insertions, 0 deletions

diff --git a/scripts/lib/wic/plugins/source/extra_partition.py b/scripts/lib/wic/plugins/source/extra_partition.py
new file mode 100644
index 0000000000..d370b0107e
--- /dev/null
+++ b/scripts/lib/wic/plugins/source/extra_partition.py
@@ -0,0 +1,134 @@
+import logging
+import os
+import re
+
+from glob import glob
+
+from wic import WicError
+from wic.pluginbase import SourcePlugin
+from wic.misc import exec_cmd, get_bitbake_var
+
+logger = logging.getLogger('wic')
+
+class ExtraPartitionPlugin(SourcePlugin):
+    """
+    Populates an extra partition with files listed in the IMAGE_EXTRA_PARTITION_FILES
+    BitBake variable. Files should be deployed to the DEPLOY_DIR_IMAGE directory.
+
+    The plugin supports:
+    - Glob pattern matching for file selection.
+    - File renaming.
+    - Suffixes to specify the target partition (by label, UUID, or partname),
+      enabling multiple extra partitions to coexist.
+
+    For example:
+
+        IMAGE_EXTRA_PARTITION_FILES_label-foo = "bar.conf;foo.conf"
+        IMAGE_EXTRA_PARTITION_FILES_uuid-e7d0824e-cda3-4bed-9f54-9ef5312d105d = "bar.conf;foobar.conf"
+        IMAGE_EXTRA_PARTITION_FILES = "foo/*"
+        WICVARS:append = "\
+            IMAGE_EXTRA_PARTITION_FILES_label-foo \
+            IMAGE_EXTRA_PARTITION_FILES_uuid-e7d0824e-cda3-4bed-9f54-9ef5312d105d \
+        "
+
+    """
+
+    name = 'extra_partition'
+    image_extra_partition_files_var_name = 'IMAGE_EXTRA_PARTITION_FILES'
+
+    @classmethod
+    def do_configure_partition(cls, part, source_params, cr, cr_workdir,
+                             oe_builddir, bootimg_dir, kernel_dir,
+                             native_sysroot):
+        """
+        Called before do_prepare_partition(), list the files to copy
+        """
+        extradir = "%s/extra.%d" % (cr_workdir, part.lineno)
+        install_cmd = "install -d %s" % extradir
+        exec_cmd(install_cmd)
+
+        if not kernel_dir:
+            kernel_dir = get_bitbake_var("DEPLOY_DIR_IMAGE")
+            if not kernel_dir:
+                raise WicError("Couldn't find DEPLOY_DIR_IMAGE, exiting")
+
+        extra_files = None
+        for (fmt, id) in (("_uuid-%s", part.uuid), ("_label-%s", part.label), ("_part-name-%s", part.part_name), (None, None)):
+            if fmt:
+                var = fmt % id
+            else:
+                var = ""
+            extra_files = get_bitbake_var(cls.image_extra_partition_files_var_name + var)
+            if extra_files is not None:
+                break
+
+        if extra_files is None:
+            raise WicError('No extra files defined, %s unset for entry #%d' % (cls.image_extra_partition_files_var_name, part.lineno))
+
+        logger.info('Extra files: %s', extra_files)
+
+        # list of tuples (src_name, dst_name)
+        deploy_files = []
+        for src_entry in re.findall(r'[\w;\-\./\*]+', extra_files):
+            if ';' in src_entry:
+                dst_entry = tuple(src_entry.split(';'))
+                if not dst_entry[0] or not dst_entry[1]:
+                    raise WicError('Malformed extra file entry: %s' % src_entry)
+            else:
+                dst_entry = (src_entry, src_entry)
+
+            logger.debug('Destination entry: %r', dst_entry)
+            deploy_files.append(dst_entry)
+
+        cls.install_task = [];
+        for deploy_entry in deploy_files:
+            src, dst = deploy_entry
+            if '*' in src:
+                # by default install files under their basename
+                entry_name_fn = os.path.basename
+                if dst != src:
+                    # unless a target name was given, then treat name
+                    # as a directory and append a basename
+                    entry_name_fn = lambda name: \
+                                    os.path.join(dst,
+                                                 os.path.basename(name))
+
+                srcs = glob(os.path.join(kernel_dir, src))
+
+                logger.debug('Globbed sources: %s', ', '.join(srcs))
+                for entry in srcs:
+                    src = os.path.relpath(entry, kernel_dir)
+                    entry_dst_name = entry_name_fn(entry)
+                    cls.install_task.append((src, entry_dst_name))
+            else:
+                cls.install_task.append((src, dst))
+
+
+    @classmethod
+    def do_prepare_partition(cls, part, source_params, cr, cr_workdir,
+                             oe_builddir, bootimg_dir, kernel_dir,
+                             rootfs_dir, native_sysroot):
+        """
+        Called to do the actual content population for a partition i.e. it
+        'prepares' the partition to be incorporated into the image.
+        In this case, we copies all files listed in IMAGE_EXTRA_PARTITION_FILES variable.
+        """
+        extradir = "%s/extra.%d" % (cr_workdir, part.lineno)
+
+        if not kernel_dir:
+            kernel_dir = get_bitbake_var("DEPLOY_DIR_IMAGE")
+            if not kernel_dir:
+                raise WicError("Couldn't find DEPLOY_DIR_IMAGE, exiting")
+
+        for task in cls.install_task:
+            src_path, dst_path = task
+            logger.debug('Install %s as %s', src_path, dst_path)
+            install_cmd = "install -m 0644 -D %s %s" \
+                          % (os.path.join(kernel_dir, src_path),
+                             os.path.join(extradir, dst_path))
+            exec_cmd(install_cmd)
+
+        logger.debug('Prepare extra partition using rootfs in %s', extradir)
+        part.prepare_rootfs(cr_workdir, oe_builddir, extradir,
+                            native_sysroot, False)
+