From mboxrd@z Thu Jan 1 00:00:00 1970 X-GM-THRID: 6520199916203016192 X-Received: by 10.25.203.197 with SMTP id b188mr265409lfg.8.1518195598450; Fri, 09 Feb 2018 08:59:58 -0800 (PST) X-BeenThere: isar-users@googlegroups.com Received: by 10.25.226.25 with SMTP id z25ls819391lfg.11.gmail; Fri, 09 Feb 2018 08:59:57 -0800 (PST) X-Google-Smtp-Source: AH8x226Of/8ICP/TI8XrZDkBpJ2q6FX703o7NLkMd/1U6ok3UXUHMHOx0EU5rxdbokBcXbA2Y/Yi X-Received: by 10.25.145.93 with SMTP id y29mr277371lfj.9.1518195597703; Fri, 09 Feb 2018 08:59:57 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1518195597; cv=none; d=google.com; s=arc-20160816; b=jIN89hDZO1Ot51/U/iJvSGshZUFIsdTaSBwzMla0qa4EyatS+BhTRRjP7cDoyuMfpV f7UFceS+3piv5icD2CI2/m2UQjGUF9hb47r4sUNBJ9A4hUmTFK62Y/ZCH2jSVGUidQ4u x369wdXj88irQ1CJqqFi/9hy0Gki1zW2P2wGXtRQphYPBje/vqsrfDyO8q04wiMsEVYk ig5gVCgdVvRPFXI80TRY+2anUsAa3BHZhRO/MRWYjCjtV2NHFIBY6AtfvJVMwXX3J9yk 6nxGknJtZMZoLpFiP2np8T2EDaio8p2UemImczBQPd/x/pQaSPcrxA+BZUcbxuYHpr78 QCrw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:cc:to:from:date:arc-authentication-results; bh=OovDiVNDFFDqF5HodBYJKaA3sfXULu7/ccZGKbuMCJ4=; b=bCrmTMst36NdjsVkcpMYsiSVk8J6+oxRzE/O9PfFcItW+By3eeJy+bq9r/sqpM8Cps Sx2IsDOtnB0OHNs2IFNmD1J+t3ekWmwRz9PY65UhdDVN6VphutSQilNuqvRTkuf+x1Sa bHU7jobCFrAgXQPLsAh7+EHAFAPIpTy8k1sdAICxRPT92pl9w8xgn8q86DHjQYaSOT5c IjfdHhU65KnKFhHf8au6y2JmJjQX9luKz2LQlOICk47ptOwUNykvGX2jiX2zqg186YF0 dUzHNwT9KamP0uXdT8G3uRax189sIpZ7JCXcDvu3x8kYIsXPmp5C0AxGpVMOcSUuHU0G CHCg== ARC-Authentication-Results: i=1; gmr-mx.google.com; spf=pass (google.com: domain of henning.schild@siemens.com designates 192.35.17.14 as permitted sender) smtp.mailfrom=henning.schild@siemens.com Return-Path: Received: from david.siemens.de (david.siemens.de. [192.35.17.14]) by gmr-mx.google.com with ESMTPS id u10si155412lju.0.2018.02.09.08.59.57 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 09 Feb 2018 08:59:57 -0800 (PST) Received-SPF: pass (google.com: domain of henning.schild@siemens.com designates 192.35.17.14 as permitted sender) client-ip=192.35.17.14; Authentication-Results: gmr-mx.google.com; spf=pass (google.com: domain of henning.schild@siemens.com designates 192.35.17.14 as permitted sender) smtp.mailfrom=henning.schild@siemens.com Received: from mail1.siemens.de (mail1.siemens.de [139.23.33.14]) by david.siemens.de (8.15.2/8.15.2) with ESMTPS id w19GxuEB030521 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Fri, 9 Feb 2018 17:59:57 +0100 Received: from mmd1pvb1c.ad001.siemens.net (md1pvb1c.ad001.siemens.net [139.25.68.40] (may be forged)) by mail1.siemens.de (8.15.2/8.15.2) with ESMTP id w19GxuHs024397; Fri, 9 Feb 2018 17:59:56 +0100 Date: Fri, 9 Feb 2018 17:59:55 +0100 From: Henning Schild To: "[ext] Jan Kiszka" Cc: isar-users Subject: Re: [PATCH v2 5/8] Provide include file for easy custom kernel builds Message-ID: <20180209175955.6ff52d19@mmd1pvb1c.ad001.siemens.net> In-Reply-To: <8ee0db162e27f31b64bc17eaf00d24f7b488806e.1518110579.git.jan.kiszka@siemens.com> References: <8ee0db162e27f31b64bc17eaf00d24f7b488806e.1518110579.git.jan.kiszka@siemens.com> X-Mailer: Claws Mail 3.15.0-dirty (GTK+ 2.24.31; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-TUID: JuGojJZKmddJ This is where the (nasty) magic happens ;). I would suggest pulling the shell script out like dpkg.bbclass is calling its build.sh, that should make it more readable. On which kernel versions have you actually tested this? I just built the jailhouse example and saw it was 4.14. Will that work on 4.4 or even before? Henning Am Thu, 8 Feb 2018 18:22:56 +0100 schrieb "[ext] Jan Kiszka" : > From: Jan Kiszka > > With this include file, it becomes almost trivial to replace the > distro kernel with a custom build. You just need to include > linux-custom.inc, specify the source URI, define via S where the > source is unpacked to and provide a defconfig. To switch to a custom > kernel recipe, PREFERRED_PROVIDER_virtual/kernel has to be adjusted > in local.conf or the distro conf. > > The approach works internally by first running "make deb-pkg" on the > kernel and the repackages the output to make the binary linux-image > and linux-header debs act as replacement of their distro packages. > This results in a suboptimal technical implementation which may > eventually be replaced by an isar-implemented deb-pkg build process. > However, this is not expected to affect the user-visible interface of > this include file. > > Signed-off-by: Jan Kiszka > --- > meta/recipes-kernel/linux/linux-custom.inc | 98 > ++++++++++++++++++++++++++++++ 1 file changed, 98 insertions(+) > create mode 100644 meta/recipes-kernel/linux/linux-custom.inc > > diff --git a/meta/recipes-kernel/linux/linux-custom.inc > b/meta/recipes-kernel/linux/linux-custom.inc new file mode 100644 > index 0000000..feb96a1 > --- /dev/null > +++ b/meta/recipes-kernel/linux/linux-custom.inc > @@ -0,0 +1,98 @@ > +# Custom kernel recipe include > +# > +# This software is a part of ISAR. > +# Copyright (c) Siemens AG, 2018 > +# > +# SPDX-License-Identifier: MIT > + > +DESCRIPTION ?= "Custom kernel" > +PROVIDES = "virtual/kernel" > + > +inherit dpkg-base > + > +KERNEL_DEBIAN_DEPENDS = "initramfs-tools | linux-initramfs-tool, > kmod, linux-base (>= 4.3~)" +KERNEL_HEADERS_DEBIAN_DEPENDS = "libc6, > libssl1.1, gcc" +KBUILD_DEPENDS = "libssl-dev libelf-dev bc" > + > +REPACK_DIR = "${PP}/repack" > +REPACK_LINUX_IMAGE_DIR = "${REPACK_DIR}/linux-image" > +REPACK_LINUX_HEADERS_DIR = "${REPACK_DIR}/linux-headers" > + > +dpkg_runbuild() { > + E="${@ bb.utils.export_proxies(d)}" > + sudo -E chroot ${BUILDCHROOT_DIR} sh -c ' > + set -e > + > + apt-get install -y -o Debug::pkgProblemResolver=yes \ > + --no-install-recommends ${KBUILD_DEPENDS} > + > + cd ${PP}/${S} > + cp ../defconfig .config > + make olddefconfig > + > + make -j ${@bb.utils.cpu_count() * 2} deb-pkg > + > + rm -rf ${REPACK_DIR} > + mkdir -p ${REPACK_DIR} > + mkdir -p ${REPACK_LINUX_IMAGE_DIR} > + mkdir -p ${REPACK_LINUX_HEADERS_DIR} > + > + cd ${PP} > + tar xzf linux-${PV}_${PV}-1.debian.tar.gz -C > ${REPACK_DIR} > + dpkg-deb -R > linux-image-${PV}_${PV}-1_${KERNEL_ARCH}.deb \ > + ${REPACK_LINUX_IMAGE_DIR} > + dpkg-deb -R > linux-headers-${PV}_${PV}-1_${KERNEL_ARCH}.deb \ > + ${REPACK_LINUX_HEADERS_DIR} > + > + dpkg-gencontrol -crepack/debian/control \ > + -lrepack/debian/changelog \ > + -frepack/debian/files \ > + -plinux-image-${PV} \ > + -P${REPACK_LINUX_IMAGE_DIR} \ > + -DPackage="linux-image-${KERNEL_ARCH}" \ > + -DSection=kernel \ > + -DPriority=required \ > + -DProvides="${PN}" \ > + -DDepends="${KERNEL_DEBIAN_DEPENDS}" > + > + # Add Debian-like link installation to postinst > + touch > ${REPACK_LINUX_IMAGE_DIR}/lib/modules/${PV}/.fresh-install > + sed -i ${REPACK_LINUX_IMAGE_DIR}/DEBIAN/postinst \ > + -e "/^set -e$/a\\ > +\\ > +if [ -f /lib/modules/${PV}/.fresh-install ]; then\\ > + change=install\\ > +else\\ > + change=upgrade\\ > +fi\\ > +linux-update-symlinks \$change ${PV} /boot/vmlinuz-${PV}\\ > +rm -f /lib/modules/${PV}/.fresh-install" > + > + # Add Debian-like link removal to postrm > + sed -i ${REPACK_LINUX_IMAGE_DIR}/DEBIAN/postrm \ > + -e "/^set -e$/a\\ > +\\ > +rm -f /lib/modules/${PV}/.fresh-install\\ > +\\ > +if [ \"\$1\" != upgrade ] && command -v linux-update-symlinks > >/dev/null; then\\ > + linux-update-symlinks remove ${PV} /boot/vmlinuz-${PV}\\ > +fi" > + > + dpkg-gencontrol -crepack/debian/control \ > + -lrepack/debian/changelog \ > + -frepack/debian/files \ > + -plinux-headers-${PV} \ > + -P${REPACK_LINUX_HEADERS_DIR} \ > + -Vkernel:debarch="${KERNEL_ARCH}" \ > + -DPackage="linux-headers-${KERNEL_ARCH}" \ > + -DSection=kernel \ > + -DDepends="${KERNEL_HEADERS_DEBIAN_DEPENDS}" > + > + dpkg-deb -b ${REPACK_LINUX_IMAGE_DIR} \ > + > linux-image-${KERNEL_ARCH}_${PV}-1_${KERNEL_ARCH}.deb > + rm -f linux-image-${PV}_${PV}-1_${KERNEL_ARCH}.deb > + dpkg-deb -b ${REPACK_LINUX_HEADERS_DIR} \ > + > linux-headers-${KERNEL_ARCH}_${PV}-1_${KERNEL_ARCH}.deb > + rm -f linux-headers-${PV}_${PV}-1_${KERNEL_ARCH}.deb > + ' > +}