From 0c20edddfc2b65cc1b5e97cf7eb321cd3884b6b6 Mon Sep 17 00:00:00 2001 From: Stefan Herbrechtsmeier Date: Mon, 14 Feb 2022 16:45:18 +0100 Subject: wic: rawcopy: Add support for packed images Add support for packed images to wic rawcopy handler do minimize disk usage in deploy directory and reuse of packed images between wic and swupdate. Add `unpack` to sourceparams to unpack an bz2, gz and xz archives. Example: part / --source rawcopy --sourceparams="file=core-image-minimal-qemu.ext4.gz,unpack" (From OE-Core rev: 4c97d25791389ece041565981ba3207ce9949a1a) Signed-off-by: Stefan Herbrechtsmeier Signed-off-by: Richard Purdie --- scripts/lib/wic/plugins/source/rawcopy.py | 29 ++++++++++++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) (limited to 'scripts') diff --git a/scripts/lib/wic/plugins/source/rawcopy.py b/scripts/lib/wic/plugins/source/rawcopy.py index fa7b1eb8ac..7c90cd3cf8 100644 --- a/scripts/lib/wic/plugins/source/rawcopy.py +++ b/scripts/lib/wic/plugins/source/rawcopy.py @@ -4,6 +4,8 @@ import logging import os +import signal +import subprocess from wic import WicError from wic.pluginbase import SourcePlugin @@ -38,6 +40,25 @@ class RawCopyPlugin(SourcePlugin): exec_cmd(cmd) + @staticmethod + def do_image_uncompression(src, dst, workdir): + def subprocess_setup(): + # Python installs a SIGPIPE handler by default. This is usually not what + # non-Python subprocesses expect. + # SIGPIPE errors are known issues with gzip/bash + signal.signal(signal.SIGPIPE, signal.SIG_DFL) + + extension = os.path.splitext(src)[1] + decompressor = { + ".bz2": "bzip2", + ".gz": "gzip", + ".xz": "xz" + }.get(extension) + if not decompressor: + raise WicError("Not supported compressor filename extension: %s" % extension) + cmd = "%s -dc %s > %s" % (decompressor, src, dst) + subprocess.call(cmd, preexec_fn=subprocess_setup, shell=True, cwd=workdir) + @classmethod def do_prepare_partition(cls, part, source_params, cr, cr_workdir, oe_builddir, bootimg_dir, kernel_dir, @@ -56,7 +77,13 @@ class RawCopyPlugin(SourcePlugin): if 'file' not in source_params: raise WicError("No file specified") - src = os.path.join(kernel_dir, source_params['file']) + if 'unpack' in source_params: + img = os.path.join(kernel_dir, source_params['file']) + src = os.path.join(cr_workdir, os.path.splitext(source_params['file'])[0]) + RawCopyPlugin.do_image_uncompression(img, src, cr_workdir) + else: + src = os.path.join(kernel_dir, source_params['file']) + dst = os.path.join(cr_workdir, "%s.%s" % (os.path.basename(source_params['file']), part.lineno)) if not os.path.exists(os.path.dirname(dst)): -- cgit v1.2.3-54-g00ecf