iankelling.org Git - automated-distro-installer/blob - fai/config/distro-install-common/install-mainline-kernel-debs

   1 #!/bin/bash
   2 # This file is part of Ian Kelling's automated-distro-installer
   3 # Copyright (C) 2024 Ian Kelling
   4
   5 # This program is free software; you can redistribute it and/or
   6 # modify it under the terms of the GNU General Public License
   7 # as published by the Free Software Foundation; either version 2
   8 # of the License, or (at your option) any later version.
   9
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program; if not, write to the Free Software
  17 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  18
  19 set -eE -o pipefail
  20 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
  21
  22 [[ $EUID == 0 ]] || exec sudo -E "${BASH_SOURCE[0]}" "$@"
  23
  24 # default
  25 kernel_ver='6\.6'
  26 case $1 in
  27   stable)
  28     # note: update kernel_ver when we are ready to jump to a new stable kernel.
  29     # Stable kernels are listed here: https://www.kernel.org/category/releases.html
  30     kernel_ver='6\.6'
  31     ;;
  32   unstable)
  33     kernel_ver='[1-9]'
  34     ;;
  35 esac
  36
  37
  38 prereqs=()
  39 for p in wget curl; do
  40   if ! type -p $p &>/dev/null; then
  41     prereqs+=($p)
  42   fi
  43 done
  44 if (( ${#prereqs[@]} >= 1 )); then
  45   apt-get -y install ${prereqs[@]}
  46 fi
  47
  48
  49 tmpdir=$($ROOTCMD mktemp -d) || exit
  50 # shellcheck disable=SC2154 # defined by fai
  51 outertmp=$target/$tmpdir
  52 trap 'cd; rm -rf "$outertmp"' EXIT
  53 cd $outertmp
  54
  55 # We get 10 versions cuz maybe the latest directory (or few) get created but not populated.
  56 tmps=$(curl -s https://kernel.ubuntu.com/mainline/ | \
  57          sed -rn 's,.*alt="\[DIR\]".*href="([^/]+).*,\1,p' | \
  58          grep -v -- -rc | sed 's/^v//' | grep "^$kernel_ver" | sort -Vr | head -n10)
  59 mapfile -t latest_versions <<<"$tmps"
  60
  61 for va in "${latest_versions[@]}"; do
  62   sleep .2 # be nice
  63   # note the wiki page about these says to install linux-headers.*generic.*amd64, but
  64   # as of 2024, they have a requirement of a very new glibc, and people report
  65   # that installing it is not needed.
  66   tmpstr=$(curl -s https://kernel.ubuntu.com/mainline/v$va/amd64/CHECKSUMS | awk '$2 ~ /^linux-/ { print $2 }' | sort -u | sed '/linux-headers.*generic.*amd64/d' )
  67   if [[ $tmpstr ]]; then
  68     mapfile -t pkgs <<<"$tmpstr"
  69     break
  70   fi
  71 done
  72
  73 if (( ${#pkgs[@]} != 3 )); then
  74   echo "$0: error. expected to find 3 kernel packages, got: ${pkgs[*]}" >&2
  75   exit 1
  76 fi
  77
  78 urls=()
  79 for p in ${pkgs[@]}; do
  80   if ! $ROOTCMD dpkg -s -- "${p%%_*}"  2>&1 | grep -Fx "Status: install ok installed" &>/dev/null; then
  81     urls+=(https://kernel.ubuntu.com/mainline/v$va/amd64/$p)
  82   fi
  83 done
  84 if (( ${#urls[@]} >= 1 )); then
  85   wget -nv "${urls[@]}"
  86   $ROOTCMD dpkg -i ${pkgs[@]/#/$tmpdir/}
  87 fi