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 ! [[ $KERNEL_INSTALL_MACHINE_ID ]]; then
  11     exit 0
  12 fi
  13
  14 if ! [[ -d "$BOOT_DIR_ABS" ]]; then
  15     exit 0
  16 fi
  17
  18 MACHINE_ID=$KERNEL_INSTALL_MACHINE_ID
  19
  20 BOOT_DIR="/$MACHINE_ID/$KERNEL_VERSION"
  21 BOOT_ROOT=${BOOT_DIR_ABS%$BOOT_DIR}
  22 LOADER_ENTRY="$BOOT_ROOT/loader/entries/$MACHINE_ID-$KERNEL_VERSION.conf"
  23
  24 if [[ $COMMAND == remove ]]; then
  25     exec rm -f "$LOADER_ENTRY"
  26 fi
  27
  28 if ! [[ $COMMAND == add ]]; then
  29     exit 1
  30 fi
  31
  32 if ! [[ $KERNEL_IMAGE ]]; then
  33     exit 1
  34 fi
  35
  36 if [[ -f /etc/os-release ]]; then
  37     . /etc/os-release
  38 elif [[ -f /usr/lib/os-release ]]; then
  39     . /usr/lib/os-release
  40 fi
  41
  42 if ! [[ $PRETTY_NAME ]]; then
  43     PRETTY_NAME="Linux $KERNEL_VERSION"
  44 fi
  45
  46 declare -a BOOT_OPTIONS
  47
  48 if [[ -f /etc/kernel/cmdline ]]; then
  49     read -r -d '' -a BOOT_OPTIONS < /etc/kernel/cmdline
  50 fi
  51
  52 if ! [[ ${BOOT_OPTIONS[*]} ]]; then
  53     read -r -d '' -a line < /proc/cmdline
  54     for i in "${line[@]}"; do
  55         [[ "${i#initrd=*}" != "$i" ]] && continue
  56         BOOT_OPTIONS+=("$i")
  57     done
  58 fi
  59
  60 if ! [[ ${BOOT_OPTIONS[*]} ]]; then
  61     echo "Could not determine the kernel command line parameters." >&2
  62     echo "Please specify the kernel command line in /etc/kernel/cmdline!" >&2
  63     exit 1
  64 fi
  65
  66 cp "$KERNEL_IMAGE" "$BOOT_DIR_ABS/linux" &&
  67    chown root:root "$BOOT_DIR_ABS/linux" &&
  68    chmod 0644 "$BOOT_DIR_ABS/linux" || {
  69     echo "Could not copy '$KERNEL_IMAGE to '$BOOT_DIR_ABS/linux'." >&2
  70     exit 1
  71 }
  72
  73 mkdir -p "${LOADER_ENTRY%/*}" || {
  74     echo "Could not create loader entry directory '${LOADER_ENTRY%/*}'." >&2
  75     exit 1
  76 }
  77
  78 {
  79     echo "title      $PRETTY_NAME"
  80     echo "version    $KERNEL_VERSION"
  81     echo "machine-id $MACHINE_ID"
  82     echo "options    ${BOOT_OPTIONS[*]}"
  83     echo "linux      $BOOT_DIR/linux"
  84     [[ -f $BOOT_DIR_ABS/initrd ]] && \
  85         echo "initrd     $BOOT_DIR/initrd"
  86     :
  87 } > "$LOADER_ENTRY" || {
  88     echo "Could not create loader entry '$LOADER_ENTRY'." >&2
  89     exit 1
  90 }
  91 exit 0