1 files changed, 124 insertions, 0 deletions
diff --git a/src/kernel-install/90-loaderentry.install b/src/kernel-install/90-loaderentry.install
new file mode 100644
index 0000000..75dd5a1
--- /dev/null
+++ b/src/kernel-install/90-loaderentry.install
@@ -0,0 +1,124 @@
+#!/bin/bash
+# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
+# ex: ts=8 sw=4 sts=4 et filetype=sh
+
+COMMAND="$1"
+KERNEL_VERSION="$2"
+BOOT_DIR_ABS="$3"
+KERNEL_IMAGE="$4"
+INITRD_OPTIONS_START="5"
+
+if ! [[ $KERNEL_INSTALL_MACHINE_ID ]]; then
+    exit 0
+fi
+
+if ! [[ -d "$BOOT_DIR_ABS" ]]; then
+    exit 0
+fi
+
+MACHINE_ID=$KERNEL_INSTALL_MACHINE_ID
+
+BOOT_DIR="/$MACHINE_ID/$KERNEL_VERSION"
+BOOT_ROOT=${BOOT_DIR_ABS%$BOOT_DIR}
+
+if [[ $COMMAND == remove ]]; then
+    rm -f "$BOOT_ROOT/loader/entries/$MACHINE_ID-$KERNEL_VERSION.conf"
+    rm -f "$BOOT_ROOT/loader/entries/$MACHINE_ID-$KERNEL_VERSION+"*".conf"
+    exit 0
+fi
+
+if ! [[ $COMMAND == add ]]; then
+    exit 1
+fi
+
+if ! [[ $KERNEL_IMAGE ]]; then
+    exit 1
+fi
+
+if [[ -f /etc/os-release ]]; then
+    . /etc/os-release
+elif [[ -f /usr/lib/os-release ]]; then
+    . /usr/lib/os-release
+fi
+
+if ! [[ $PRETTY_NAME ]]; then
+    PRETTY_NAME="Linux $KERNEL_VERSION"
+fi
+
+declare -a BOOT_OPTIONS
+
+if [[ -f /etc/kernel/cmdline ]]; then
+    read -r -d '' -a BOOT_OPTIONS < /etc/kernel/cmdline
+fi
+
+if ! [[ ${BOOT_OPTIONS[*]} ]]; then
+    read -r -d '' -a line < /proc/cmdline
+    for i in "${line[@]}"; do
+        [[ "${i#initrd=*}" != "$i" ]] && continue
+        BOOT_OPTIONS+=("$i")
+    done
+fi
+
+if ! [[ ${BOOT_OPTIONS[*]} ]]; then
+    echo "Could not determine the kernel command line parameters." >&2
+    echo "Please specify the kernel command line in /etc/kernel/cmdline!" >&2
+    exit 1
+fi
+
+if [[ -f /etc/kernel/tries ]]; then
+    read -r TRIES </etc/kernel/tries
+    if ! [[ "$TRIES" =~ ^[0-9]+$ ]] ; then
+        echo "/etc/kernel/tries does not contain an integer." >&2
+        exit 1
+    fi
+    LOADER_ENTRY="$BOOT_ROOT/loader/entries/$MACHINE_ID-$KERNEL_VERSION+$TRIES.conf"
+else
+    LOADER_ENTRY="$BOOT_ROOT/loader/entries/$MACHINE_ID-$KERNEL_VERSION.conf"
+fi
+
+cp "$KERNEL_IMAGE" "$BOOT_DIR_ABS/linux" &&
+   chown root:root "$BOOT_DIR_ABS/linux" &&
+   chmod 0644 "$BOOT_DIR_ABS/linux" || {
+    echo "Could not copy '$KERNEL_IMAGE to '$BOOT_DIR_ABS/linux'." >&2
+    exit 1
+}
+
+INITRD_OPTIONS=( "${@:${INITRD_OPTIONS_START}}" )
+
+for initrd in "${INITRD_OPTIONS[@]}"; do
+    if [[ -f "${initrd}" ]]; then
+        initrd_basename="$(basename ${initrd})"
+        cp "${initrd}" "$BOOT_DIR_ABS/${initrd_basename}" &&
+            chown root:root "$BOOT_DIR_ABS/${initrd_basename}" &&
+            chmod 0644 "$BOOT_DIR_ABS/${initrd_basename}" || {
+             echo "Could not copy '${initrd}' to '$BOOT_DIR_ABS/${initrd_basename}'." >&2
+             exit 1
+        }
+    fi
+done
+
+# If no initrd option is supplied, fallback to "initrd" which is
+# the name used by dracut when generating it in its kernel-install hook
+[[ ${#INITRD_OPTIONS[@]} == 0 ]] && INITRD_OPTIONS=( initrd )
+
+mkdir -p "${LOADER_ENTRY%/*}" || {
+    echo "Could not create loader entry directory '${LOADER_ENTRY%/*}'." >&2
+    exit 1
+}
+
+{
+    echo "title      $PRETTY_NAME"
+    echo "version    $KERNEL_VERSION"
+    echo "machine-id $MACHINE_ID"
+    echo "options    ${BOOT_OPTIONS[*]}"
+    echo "linux      $BOOT_DIR/linux"
+    for initrd in "${INITRD_OPTIONS[@]}"; do
+        [[ -f $BOOT_DIR_ABS/$(basename ${initrd}) ]] && \
+            echo "initrd     $BOOT_DIR/$(basename ${initrd})"
+    done
+    :
+} > "$LOADER_ENTRY" || {
+    echo "Could not create loader entry '$LOADER_ENTRY'." >&2
+    exit 1
+}
+exit 0