various fixes, improvements, shellcheck

[automated-distro-installer] / fai / config / distro-install-common / install-mainline-kernel-debs

diff --git a/fai/config/distro-install-common/install-stable-kernel-debs b/fai/config/distro-install-common/install-mainline-kernel-debs
similarity index 58%
rename from fai/config/distro-install-common/install-stable-kernel-debs
rename to fai/config/distro-install-common/install-mainline-kernel-debs
index db7abcfc5d7af446118586ef4b707c10325df983..93f7c579dcc2fd325977c5bc334e020c1387e3b9 100755 (executable)
--- a/fai/config/distro-install-common/install-stable-kernel-debs
+++ b/fai/config/distro-install-common/install-mainline-kernel-debs
@@ -21,7 +21,19 @@ trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
 
 [[ $EUID == 0 ]] || exec sudo -E "${BASH_SOURCE[0]}" "$@"
 
-set -x
+# default
+kernel_ver='6\.6'
+case $1 in
+  stable)
+    # note: update kernel_ver when we are ready to jump to a new stable kernel.
+    # Stable kernels are listed here: https://www.kernel.org/category/releases.html
+    kernel_ver='6\.6'
+    ;;
+  unstable)
+    kernel_ver='[1-9]'
+    ;;
+esac
+
 
 prereqs=()
 for p in wget curl; do
@@ -35,25 +47,28 @@ fi
 
 
 tmpdir=$($ROOTCMD mktemp -d) || exit
+# shellcheck disable=SC2154 # defined by fai
 outertmp=$target/$tmpdir
 trap 'cd; rm -rf "$outertmp"' EXIT
 cd $outertmp
 
-# update stable_ver when we are ready to jump to a new stable kernel.
-# Stable kernels are listed here: https://www.kernel.org/category/releases.html
-stable_ver='6\.6'
-# Actually, I dont want stable right now. comment this out to get stable
-# version.
-stable_ver='[1-9]'
-va=$(curl -s https://kernel.ubuntu.com/mainline/ | \
-       sed -rn 's,.*alt="\[DIR\]".*href="([^/]+).*,\1,p' | \
-       grep -v -- -rc | sed 's/^v//' | grep "^$stable_ver" | sort -V | tail -n1)
+# We get 10 versions cuz maybe the latest directory (or few) get created but not populated.
+tmps=$(curl -s https://kernel.ubuntu.com/mainline/ | \
+         sed -rn 's,.*alt="\[DIR\]".*href="([^/]+).*,\1,p' | \
+         grep -v -- -rc | sed 's/^v//' | grep "^$kernel_ver" | sort -Vr | head -n10)
+mapfile -t latest_versions <<<"$tmps"
 
-# note the wiki page about these says to install linux-headers.*generic.*amd64, but
-# as of 2024, they have a requirement of a very new glibc, and people report
-# that installing it is not needed.
-tmpstr=$(curl -s https://kernel.ubuntu.com/mainline/v$va/amd64/CHECKSUMS | awk '$2 ~ /^linux-/ { print $2 }' | sort -u | grep -iv 'linux-headers.*generic.*amd64' )
-mapfile -t pkgs <<<"$tmpstr"
+for va in "${latest_versions[@]}"; do
+  sleep .2 # be nice
+  # note the wiki page about these says to install linux-headers.*generic.*amd64, but
+  # as of 2024, they have a requirement of a very new glibc, and people report
+  # that installing it is not needed.
+  tmpstr=$(curl -s https://kernel.ubuntu.com/mainline/v$va/amd64/CHECKSUMS | awk '$2 ~ /^linux-/ { print $2 }' | sort -u | sed '/linux-headers.*generic.*amd64/d' )
+  if [[ $tmpstr ]]; then
+    mapfile -t pkgs <<<"$tmpstr"
+    break
+  fi
+done
 
 if (( ${#pkgs[@]} != 3 )); then
   echo "$0: error. expected to find 3 kernel packages, got: ${pkgs[*]}" >&2