src/kernel-install/90-loaderentry.install

   1 #!/bin/bash
   2 # -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
   3 # ex: ts=8 sw=4 sts=4 et filetype=sh
   4
   5 COMMAND="$1"
   6 KERNEL_VERSION="$2"
   7 BOOT_DIR_ABS="$3"
   8 KERNEL_IMAGE="$4"
   9
  10 if ! [[ $KERNEL_INSTALL_MACHINE_ID ]]; then
  11     exit 0
  12 fi
  13
  14 MACHINE_ID=$KERNEL_INSTALL_MACHINE_ID
  15
  16 BOOT_DIR="/$MACHINE_ID/$KERNEL_VERSION"
  17 BOOT_ROOT=${BOOT_DIR_ABS%$BOOT_DIR}
  18 LOADER_ENTRY="$BOOT_ROOT/loader/entries/$MACHINE_ID-$KERNEL_VERSION.conf"
  19
  20 if [[ $COMMAND == remove ]]; then
  21     exec rm -f "$LOADER_ENTRY"
  22 fi
  23
  24 if ! [[ $COMMAND == add ]]; then
  25     exit 1
  26 fi
  27
  28 if ! [[ $KERNEL_IMAGE ]]; then
  29     exit 1
  30 fi
  31
  32 if [[ -f /etc/os-release ]]; then
  33     . /etc/os-release
  34 elif [[ -f /usr/lib/os-release ]]; then
  35     . /usr/lib/os-release
  36 fi
  37
  38 if ! [[ $PRETTY_NAME ]]; then
  39     PRETTY_NAME="Linux $KERNEL_VERSION"
  40 fi
  41
  42 declare -a BOOT_OPTIONS
  43
  44 if [[ -f /etc/kernel/cmdline ]]; then
  45     read -r -d '' -a BOOT_OPTIONS < /etc/kernel/cmdline
  46 fi
  47
  48 if ! [[ ${BOOT_OPTIONS[*]} ]]; then
  49     read -r -d '' -a line < /proc/cmdline
  50     for i in "${line[@]}"; do
  51         [[ "${i#initrd=*}" != "$i" ]] && continue
  52         BOOT_OPTIONS+=("$i")
  53     done
  54 fi
  55
  56 if ! [[ ${BOOT_OPTIONS[*]} ]]; then
  57     echo "Could not determine the kernel command line parameters." >&2
  58     echo "Please specify the kernel command line in /etc/kernel/cmdline!" >&2
  59     exit 1
  60 fi
  61
  62 cp "$KERNEL_IMAGE" "$BOOT_DIR_ABS/linux" &&
  63    chown root:root "$BOOT_DIR_ABS/linux" &&
  64    chmod 0644 "$BOOT_DIR_ABS/linux" || {
  65     echo "Could not copy '$KERNEL_IMAGE to '$BOOT_DIR_ABS/linux'." >&2
  66     exit 1
  67 }
  68
  69 mkdir -p "${LOADER_ENTRY%/*}" || {
  70     echo "Could not create loader entry directory '${LOADER_ENTRY%/*}'." >&2
  71     exit 1
  72 }
  73
  74 {
  75     echo "title      $PRETTY_NAME"
  76     echo "version    $KERNEL_VERSION"
  77     echo "machine-id $MACHINE_ID"
  78     echo "options    ${BOOT_OPTIONS[*]}"
  79     echo "linux      $BOOT_DIR/linux"
  80     [[ -f $BOOT_DIR_ABS/initrd ]] && \
  81         echo "initrd     $BOOT_DIR/initrd"
  82     :
  83 } > "$LOADER_ENTRY" || {
  84     echo "Could not create loader entry '$LOADER_ENTRY'." >&2
  85     exit 1
  86 }
  87 exit 0