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#!/bin/bash
# Single-entry, systemd-compliant kernel-install hook for CachyOS
set -e
COMMAND="$1" # add | remove
KERNEL_VERSION="$2" # e.g. 6.18.4-1-cachyos
# Only act on CachyOS kernels
case "$KERNEL_VERSION" in
*cachyos*) ;;
*) exit 0 ;;
esac
BOOT_ROOT="${KERNEL_INSTALL_BOOT_ROOT:-/boot}"
ENTRY_DIR="$BOOT_ROOT/loader/entries"
ENTRY_FILE="$ENTRY_DIR/raveos.conf"
# --------------------------------------------------
# Fixed CachyOS kernel paths (non-versioned)
# --------------------------------------------------
LINUX_IMAGE="/vmlinuz-linux-cachyos"
INITRAMFS_IMAGE="/initramfs-linux-cachyos.img"
# --------------------------------------------------
# Microcode (must be first initrd)
# --------------------------------------------------
MICROCODE=""
[ -f "$BOOT_ROOT/intel-ucode.img" ] && MICROCODE="/intel-ucode.img"
[ -f "$BOOT_ROOT/amd-ucode.img" ] && MICROCODE="/amd-ucode.img"
# --------------------------------------------------
# Root device detection
# --------------------------------------------------
ROOT_SRC="$(findmnt -no SOURCE /)"
ROOT_FS="$(findmnt -no FSTYPE /)"
ROOT_OPTS="$(findmnt -no OPTIONS /)"
OPTIONS="rw quiet"
# LUKS
if [[ "$ROOT_SRC" == /dev/mapper/* ]]; then
UUID="$(blkid -s UUID -o value "$ROOT_SRC" || true)"
if [ -n "$UUID" ]; then
OPTIONS="cryptdevice=UUID=$UUID:cryptroot root=/dev/mapper/cryptroot $OPTIONS"
else
OPTIONS="root=$ROOT_SRC $OPTIONS"
fi
else
PARTUUID="$(blkid -s PARTUUID -o value "$ROOT_SRC" || true)"
[ -n "$PARTUUID" ] && OPTIONS="root=PARTUUID=$PARTUUID $OPTIONS"
fi
# --------------------------------------------------
# Btrfs subvolume support
# --------------------------------------------------
if [ "$ROOT_FS" = "btrfs" ]; then
SUBVOL="$(echo "$ROOT_OPTS" | tr ',' '\n' | grep '^subvol=' || true)"
[ -n "$SUBVOL" ] && OPTIONS="$OPTIONS rootflags=$SUBVOL"
fi
mkdir -p "$ENTRY_DIR"
case "$COMMAND" in
add)
{
echo "title RaveOS Linux (CachyOS Kernel)"
echo "linux $LINUX_IMAGE"
[ -n "$MICROCODE" ] && echo "initrd $MICROCODE"
echo "initrd $INITRAMFS_IMAGE"
echo "options $OPTIONS"
} > "$ENTRY_FILE"
;;
remove)
# Only remove entry if this was the last CachyOS kernel
rm -f "$ENTRY_FILE"
;;
*)
exit 0
;;
esac
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