mirror of
https://github.com/theupriser/steamify-cachyos.git
synced 2026-10-03 17:41:58 +02:00
refactor: the retired kernel pin in its own module
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Ss5gKj7XG5JPi27XwGBGTs
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theupriserandClaude Sonnet 5.5 committed
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@@ -0,0 +1,164 @@
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#!/bin/bash
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# "Pin the kernel" (kpin), retired: newer linux-cachyos releases rebooted the
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# Steam Machine instead of shutting down, which the power-off fix
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# (lib/fremont-poweroff.sh) made unnecessary. Only what removes an existing pin
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# is still offered (kpin_available), a sub-option of Steam Machine support.
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# Sourced by steamify.sh; not meant to be run on its own.
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# Kernel pinned on a Steam Machine (optional): newer linux-cachyos releases
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# rebooted it instead of shutting down, which the power-off fix now handles. The packages are kept in
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# PINNED_KERNEL_DIR, so re-applying (or reinstalling after an update slipped
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# through) needs no download.
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PINNED_KERNEL_VER="7.1.6-1"
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PINNED_KERNEL_KVER="7.1.6-1-cachyos"
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PINNED_KERNEL_PKGS=(linux-cachyos linux-cachyos-headers)
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PINNED_KERNEL_DIR="${PINNED_KERNEL_DIR:-/var/cache/steamify/kernel}"
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# SHA-256 of each package, so a file from any source is the one reviewed
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# here; its CachyOS signature is checked as well.
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declare -A PINNED_KERNEL_SHA256=(
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[linux-cachyos]=417fcd07102192b86e78e92ed7171d5a49378e9f57faea3fa2c7c541e9f68d08
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[linux-cachyos-headers]=d069866a11d9092746e1d5133cefd8924f027da2c9bf5af38d30b3aed6ded9bf
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)
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# Tried in order, after the kernel dir and pacman's cache. Our own release
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# always has these files; the archive keeps every release; the mirror only
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# the current one. PINNED_KERNEL_URL puts another source (a directory
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# holding the files) in front.
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PINNED_KERNEL_SOURCES=(
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${PINNED_KERNEL_URL:+"$PINNED_KERNEL_URL"}
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"https://github.com/theupriser/steamify-cachyos/releases/download/kernel-$PINNED_KERNEL_VER"
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"https://archive.cachyos.org/archive/cachyos"
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"https://mirror.cachyos.org/repo/x86_64/cachyos"
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)
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pinned_kernel_installed() {
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local p
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for p in "${PINNED_KERNEL_PKGS[@]}"; do
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[[ "$(pacman -Q "$p" 2>/dev/null)" == "$p $PINNED_KERNEL_VER" ]] || return 1
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done
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}
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fetch_pinned_kernel_file() {
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# $1 = file name. Local kernel dir first, then pacman's cache, then the
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# download sources. Downloads go to a .part file so a broken one is never
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# mistaken for a finished one.
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local f="$1" dest="$PINNED_KERNEL_DIR/$1" src
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[[ -s "$dest" ]] && return 0
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if [[ -s "/var/cache/pacman/pkg/$f" ]]; then
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sudo cp "/var/cache/pacman/pkg/$f" "$dest" && return 0
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fi
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for src in "${PINNED_KERNEL_SOURCES[@]}"; do
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if sudo curl -fL --retry 2 --connect-timeout 15 -o "$dest.part" "$src/$f" 2>/dev/null; then
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sudo mv "$dest.part" "$dest"
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return 0
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fi
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warn "Couldn't get $f from $src, trying the next source..."
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done
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sudo rm -f "$dest.part"
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return 1
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}
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verify_pinned_kernel_pkg() {
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# $1 = package name, $2 = file. Both checks must pass: the SHA-256 from
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# this script, and the CachyOS signature (pacman on its own installs a
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# local file without a .sig: LocalFileSigLevel = Optional).
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local sum
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sum="$(sha256sum "$2" | cut -d' ' -f1)"
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if [[ "$sum" != "${PINNED_KERNEL_SHA256[$1]}" ]]; then
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err "$(basename "$2") doesn't match its expected checksum."
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return 1
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fi
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if ! sudo pacman-key --verify "$2.sig" "$2" >/dev/null 2>&1; then
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err "$(basename "$2") doesn't have a valid CachyOS signature."
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return 1
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fi
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}
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pin_kernel_in_pacman_conf() {
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# Adds our packages to IgnorePkg in [options], keeping what's there.
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local p
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for p in "${PINNED_KERNEL_PKGS[@]}"; do
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grep -Eq "^IgnorePkg\s*=.*(\s|=)$p(\s|$)" /etc/pacman.conf && continue
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if grep -Eq '^IgnorePkg\s*=' /etc/pacman.conf; then
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sudo sed -i -E "0,/^IgnorePkg\s*=/s/^(IgnorePkg\s*=.*)$/\1 $p/" /etc/pacman.conf
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else
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sudo sed -i -E "0,/^\[options\]/s//[options]\nIgnorePkg = $p/" /etc/pacman.conf
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fi
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done
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}
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unpin_kernel_in_pacman_conf() {
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local p
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for p in "${PINNED_KERNEL_PKGS[@]}"; do
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sudo sed -i -E "/^IgnorePkg\s*=/s/\s$p(\s|$)/\1/" /etc/pacman.conf
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done
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# Drop the line if nothing is left on it.
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sudo sed -i -E '/^IgnorePkg\s*=\s*$/d' /etc/pacman.conf
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}
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install_pinned_kernel() {
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sudo mkdir -p "$PINNED_KERNEL_DIR"
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pin_kernel_in_pacman_conf
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if pinned_kernel_installed; then
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ok "Kernel $PINNED_KERNEL_VER already installed and pinned."
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return 0
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fi
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local p f files=()
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info "Getting kernel $PINNED_KERNEL_VER (kept in $PINNED_KERNEL_DIR)..."
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for p in "${PINNED_KERNEL_PKGS[@]}"; do
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f="$p-$PINNED_KERNEL_VER-x86_64.pkg.tar.zst"
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fetch_pinned_kernel_file "$f" && fetch_pinned_kernel_file "$f.sig" ||
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{ err "Couldn't download $f from any source."; return 1; }
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if ! verify_pinned_kernel_pkg "$p" "$PINNED_KERNEL_DIR/$f"; then
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# Removed, so the next run fetches it again.
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sudo rm -f "$PINNED_KERNEL_DIR/$f" "$PINNED_KERNEL_DIR/$f.sig"
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err "Removed it; run the wizard again to download it once more."
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return 1
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fi
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files+=("$PINNED_KERNEL_DIR/$f")
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done
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# pacman checks each package against the .sig next to it.
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info "Installing kernel $PINNED_KERNEL_VER..."
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if ! sudo pacman -U --noconfirm "${files[@]}"; then
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err "Installing kernel $PINNED_KERNEL_VER failed."
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return 1
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fi
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[[ "$(uname -r)" != "$PINNED_KERNEL_KVER" ]] && RESTART_FOR_LOGIN=true
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ok "Kernel $PINNED_KERNEL_VER installed and pinned (restart to use it)."
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}
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remove_kernel_pin() {
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# Back to CachyOS's current kernel. The packages stay in
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# PINNED_KERNEL_DIR, so turning support on again doesn't download.
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unpin_kernel_in_pacman_conf
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pinned_kernel_installed || return 0
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info "Updating the kernel back to CachyOS's current version..."
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sudo pacman -Syu --noconfirm ||
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{ warn "Updating the kernel failed; run: sudo pacman -Syu"; return 0; }
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RESTART_FOR_LOGIN=true
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}
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# "Pin the kernel" menu item, a sub-option of Steam Machine support. The
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# power-off fix made it unnecessary: only shown while on, to remove it.
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kpin_available() { detect_valve_fremont && kpin_status; }
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kpin_status() {
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pinned_kernel_installed && grep -Eq '^IgnorePkg\s*=.*\slinux-cachyos(\s|$)' /etc/pacman.conf
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}
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kpin_enable() {
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install_pinned_kernel || return 1
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# The DKMS pacman hook built leds-valve for the new headers; make sure.
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if pacman -Qi leds-valve-dkms-git >/dev/null 2>&1 &&
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! dkms status -k "$PINNED_KERNEL_KVER" leds-valve-dkms 2>/dev/null | grep -q installed; then
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sudo dkms install leds-valve-dkms/0.1 -k "$PINNED_KERNEL_KVER" ||
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warn "Building the LED driver for $PINNED_KERNEL_KVER failed."
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fi
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}
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kpin_disable() {
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# Saved HDMI refresh boost EDIDs were for the pinned kernel only (newer
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# ones read the whole EDID), also those of displays not connected now.
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hdmi_status && hdmi_forget_all
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remove_kernel_pin
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}
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@@ -15,164 +15,6 @@ detect_valve_fremont() {
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[[ "$vendor" == "OEM" && "$product" == "F7F" ]]
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}
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# Kernel pinned on a Steam Machine (optional): newer linux-cachyos releases
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# rebooted it instead of shutting down, which the power-off fix now handles. The packages are kept in
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# PINNED_KERNEL_DIR, so re-applying (or reinstalling after an update slipped
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# through) needs no download.
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PINNED_KERNEL_VER="7.1.6-1"
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PINNED_KERNEL_KVER="7.1.6-1-cachyos"
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PINNED_KERNEL_PKGS=(linux-cachyos linux-cachyos-headers)
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PINNED_KERNEL_DIR="${PINNED_KERNEL_DIR:-/var/cache/steamify/kernel}"
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# SHA-256 of each package, so a file from any source is the one reviewed
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# here; its CachyOS signature is checked as well.
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declare -A PINNED_KERNEL_SHA256=(
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[linux-cachyos]=417fcd07102192b86e78e92ed7171d5a49378e9f57faea3fa2c7c541e9f68d08
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[linux-cachyos-headers]=d069866a11d9092746e1d5133cefd8924f027da2c9bf5af38d30b3aed6ded9bf
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)
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# Tried in order, after the kernel dir and pacman's cache. Our own release
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# always has these files; the archive keeps every release; the mirror only
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# the current one. PINNED_KERNEL_URL puts another source (a directory
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# holding the files) in front.
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PINNED_KERNEL_SOURCES=(
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${PINNED_KERNEL_URL:+"$PINNED_KERNEL_URL"}
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"https://github.com/theupriser/steamify-cachyos/releases/download/kernel-$PINNED_KERNEL_VER"
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"https://archive.cachyos.org/archive/cachyos"
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"https://mirror.cachyos.org/repo/x86_64/cachyos"
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)
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pinned_kernel_installed() {
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local p
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for p in "${PINNED_KERNEL_PKGS[@]}"; do
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[[ "$(pacman -Q "$p" 2>/dev/null)" == "$p $PINNED_KERNEL_VER" ]] || return 1
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done
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}
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fetch_pinned_kernel_file() {
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# $1 = file name. Local kernel dir first, then pacman's cache, then the
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# download sources. Downloads go to a .part file so a broken one is never
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# mistaken for a finished one.
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local f="$1" dest="$PINNED_KERNEL_DIR/$1" src
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[[ -s "$dest" ]] && return 0
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if [[ -s "/var/cache/pacman/pkg/$f" ]]; then
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sudo cp "/var/cache/pacman/pkg/$f" "$dest" && return 0
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fi
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for src in "${PINNED_KERNEL_SOURCES[@]}"; do
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if sudo curl -fL --retry 2 --connect-timeout 15 -o "$dest.part" "$src/$f" 2>/dev/null; then
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sudo mv "$dest.part" "$dest"
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return 0
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fi
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warn "Couldn't get $f from $src, trying the next source..."
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done
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sudo rm -f "$dest.part"
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return 1
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}
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verify_pinned_kernel_pkg() {
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# $1 = package name, $2 = file. Both checks must pass: the SHA-256 from
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# this script, and the CachyOS signature (pacman on its own installs a
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# local file without a .sig: LocalFileSigLevel = Optional).
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local sum
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sum="$(sha256sum "$2" | cut -d' ' -f1)"
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if [[ "$sum" != "${PINNED_KERNEL_SHA256[$1]}" ]]; then
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err "$(basename "$2") doesn't match its expected checksum."
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return 1
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fi
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if ! sudo pacman-key --verify "$2.sig" "$2" >/dev/null 2>&1; then
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err "$(basename "$2") doesn't have a valid CachyOS signature."
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return 1
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fi
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}
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pin_kernel_in_pacman_conf() {
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# Adds our packages to IgnorePkg in [options], keeping what's there.
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local p
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for p in "${PINNED_KERNEL_PKGS[@]}"; do
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grep -Eq "^IgnorePkg\s*=.*(\s|=)$p(\s|$)" /etc/pacman.conf && continue
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if grep -Eq '^IgnorePkg\s*=' /etc/pacman.conf; then
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sudo sed -i -E "0,/^IgnorePkg\s*=/s/^(IgnorePkg\s*=.*)$/\1 $p/" /etc/pacman.conf
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else
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sudo sed -i -E "0,/^\[options\]/s//[options]\nIgnorePkg = $p/" /etc/pacman.conf
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fi
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done
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}
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unpin_kernel_in_pacman_conf() {
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local p
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for p in "${PINNED_KERNEL_PKGS[@]}"; do
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sudo sed -i -E "/^IgnorePkg\s*=/s/\s$p(\s|$)/\1/" /etc/pacman.conf
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done
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# Drop the line if nothing is left on it.
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sudo sed -i -E '/^IgnorePkg\s*=\s*$/d' /etc/pacman.conf
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}
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install_pinned_kernel() {
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sudo mkdir -p "$PINNED_KERNEL_DIR"
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pin_kernel_in_pacman_conf
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if pinned_kernel_installed; then
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ok "Kernel $PINNED_KERNEL_VER already installed and pinned."
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return 0
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fi
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local p f files=()
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info "Getting kernel $PINNED_KERNEL_VER (kept in $PINNED_KERNEL_DIR)..."
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for p in "${PINNED_KERNEL_PKGS[@]}"; do
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f="$p-$PINNED_KERNEL_VER-x86_64.pkg.tar.zst"
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fetch_pinned_kernel_file "$f" && fetch_pinned_kernel_file "$f.sig" ||
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{ err "Couldn't download $f from any source."; return 1; }
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if ! verify_pinned_kernel_pkg "$p" "$PINNED_KERNEL_DIR/$f"; then
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# Removed, so the next run fetches it again.
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sudo rm -f "$PINNED_KERNEL_DIR/$f" "$PINNED_KERNEL_DIR/$f.sig"
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err "Removed it; run the wizard again to download it once more."
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return 1
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fi
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files+=("$PINNED_KERNEL_DIR/$f")
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done
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# pacman checks each package against the .sig next to it.
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info "Installing kernel $PINNED_KERNEL_VER..."
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if ! sudo pacman -U --noconfirm "${files[@]}"; then
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err "Installing kernel $PINNED_KERNEL_VER failed."
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return 1
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fi
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[[ "$(uname -r)" != "$PINNED_KERNEL_KVER" ]] && RESTART_FOR_LOGIN=true
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ok "Kernel $PINNED_KERNEL_VER installed and pinned (restart to use it)."
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}
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remove_kernel_pin() {
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# Back to CachyOS's current kernel. The packages stay in
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# PINNED_KERNEL_DIR, so turning support on again doesn't download.
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unpin_kernel_in_pacman_conf
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pinned_kernel_installed || return 0
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info "Updating the kernel back to CachyOS's current version..."
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sudo pacman -Syu --noconfirm ||
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{ warn "Updating the kernel failed; run: sudo pacman -Syu"; return 0; }
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RESTART_FOR_LOGIN=true
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}
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# "Pin the kernel" menu item, a sub-option of Steam Machine support. The
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# power-off fix made it unnecessary: only shown while on, to remove it.
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kpin_available() { detect_valve_fremont && kpin_status; }
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kpin_status() {
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pinned_kernel_installed && grep -Eq '^IgnorePkg\s*=.*\slinux-cachyos(\s|$)' /etc/pacman.conf
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}
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kpin_enable() {
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install_pinned_kernel || return 1
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# The DKMS pacman hook built leds-valve for the new headers; make sure.
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if pacman -Qi leds-valve-dkms-git >/dev/null 2>&1 &&
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! dkms status -k "$PINNED_KERNEL_KVER" leds-valve-dkms 2>/dev/null | grep -q installed; then
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sudo dkms install leds-valve-dkms/0.1 -k "$PINNED_KERNEL_KVER" ||
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warn "Building the LED driver for $PINNED_KERNEL_KVER failed."
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fi
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}
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kpin_disable() {
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# Saved HDMI refresh boost EDIDs were for the pinned kernel only (newer
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# ones read the whole EDID), also those of displays not connected now.
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hdmi_status && hdmi_forget_all
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remove_kernel_pin
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}
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install_kernel_headers() {
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# DKMS can only build leds-valve against kernels whose headers are
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# installed. CachyOS ships several kernels (linux-cachyos, -lts, -bore,
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