Add script to generate config-base from latest Fedora kernel config available in stable updates

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Frédéric Pierret (fepitre) 2018-12-22 15:56:34 +01:00
parent 63a357e7ce
commit 0afef3372d
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2 changed files with 52 additions and 0 deletions

1
.gitignore vendored
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@ -2,3 +2,4 @@ linux-*.tar.bz2
linux-*.tar.xz linux-*.tar.xz
linux-*.sign linux-*.sign
kernel-*/ kernel-*/
config-base-*

51
get-fedora-latest-config Executable file
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@ -0,0 +1,51 @@
#!/bin/bash
set -e
if [ "${VERBOSE:-0}" -ge 2 ] || [ "${DEBUG:-0}" -eq 1 ]; then
set -x
fi
localdir="$(dirname "$(readlink -f "$0")")"
releasever="$1"
kernelver="$(cat "$localdir/version")"
kernelsrc="linux-$kernelver"
[[ "x$releasever" == "x" ]] && { echo "Please provide Fedora release version as first argument, e.g. '29'."; exit 1; }
# baseurl for latest kernel rpm
url="https://dl.fedoraproject.org/pub/fedora/linux/updates/$releasever/Everything/x86_64/Packages/k"
# get the latest kernel rpm
content="$(curl "$url/")"
latestrpm="$(echo "$content" | sed -e 's/<[^>]*>//g' | awk '{print $1}' | grep -E "kernel-core-[0-9]+.[0-9]+.[0-9]+-[0-9]+.fc29.x86_64.rpm")"
latestver="$(echo "$latestrpm" | sed 's/kernel-core-//; s/\.rpm//')"
if [ "x$latestrpm" != "x" ]; then
tmpdir=$(mktemp -d)
# download latest kernel rpm
wget -q -O "$tmpdir/$latestrpm" "$url/$latestrpm"
# extract kernel sources in qubes-linux-kernel
tar xf "$localdir/$kernelsrc.tar.xz" -C "$tmpdir"
# get latest config and put it in extracted sources
rpm2cpio "$tmpdir/$latestrpm" | cpio -iv --to-stdout "./lib/modules/$latestver/config" > "$tmpdir/$kernelsrc/.config"
# generate new config with: yes '' | make oldconfig
cd "$tmpdir/$kernelsrc/"
## drop config settings which depend on Fedora patches and adjust for the small version difference
yes '' | make oldconfig
## remove comments in header
sed -i '1,4d' "$tmpdir/$kernelsrc/.config"
# create final config
cat - "$tmpdir/$kernelsrc/.config" > "$localdir/config-base-$latestver" << EOF
# Base config based on Fedora's config ($latestrpm)
# Only modification is \`yes '' | make oldconfig\` to drop config settings which
# depend on Fedora patches and adjust for the small version difference.
EOF
rm -rf "$tmpdir"
else
echo "Unable to find the latest kernel rpm for Fedora $releasever"; exit 1
fi