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 INITRD_OPTIONS_START="5"
  10
  11 if ! [[ $KERNEL_INSTALL_MACHINE_ID ]]; then
  12     exit 0
  13 fi
  14
  15 if ! [[ -d "$BOOT_DIR_ABS" ]]; then
  16     exit 0
  17 fi
  18
  19 MACHINE_ID=$KERNEL_INSTALL_MACHINE_ID
  20
  21 BOOT_DIR="/$MACHINE_ID/$KERNEL_VERSION"
  22 BOOT_ROOT=${BOOT_DIR_ABS%$BOOT_DIR}
  23
  24 if [[ $COMMAND == remove ]]; then
  25     rm -f "$BOOT_ROOT/loader/entries/$MACHINE_ID-$KERNEL_VERSION.conf"
  26     rm -f "$BOOT_ROOT/loader/entries/$MACHINE_ID-$KERNEL_VERSION+"*".conf"
  27     exit 0
  28 fi
  29
  30 if ! [[ $COMMAND == add ]]; then
  31     exit 1
  32 fi
  33
  34 if ! [[ $KERNEL_IMAGE ]]; then
  35     exit 1
  36 fi
  37
  38 if [[ -f /etc/os-release ]]; then
  39     . /etc/os-release
  40 elif [[ -f /usr/lib/os-release ]]; then
  41     . /usr/lib/os-release
  42 fi
  43
  44 if ! [[ $PRETTY_NAME ]]; then
  45     PRETTY_NAME="Linux $KERNEL_VERSION"
  46 fi
  47
  48 declare -a BOOT_OPTIONS
  49
  50 if [[ -f /etc/kernel/cmdline ]]; then
  51     read -r -d '' -a BOOT_OPTIONS < /etc/kernel/cmdline
  52 fi
  53
  54 if ! [[ ${BOOT_OPTIONS[*]} ]]; then
  55     read -r -d '' -a line < /proc/cmdline
  56     for i in "${line[@]}"; do
  57         [[ "${i#initrd=*}" != "$i" ]] && continue
  58         BOOT_OPTIONS+=("$i")
  59     done
  60 fi
  61
  62 if ! [[ ${BOOT_OPTIONS[*]} ]]; then
  63     echo "Could not determine the kernel command line parameters." >&2
  64     echo "Please specify the kernel command line in /etc/kernel/cmdline!" >&2
  65     exit 1
  66 fi
  67
  68 if [[ -f /etc/kernel/tries ]]; then
  69     read -r TRIES </etc/kernel/tries
  70     if ! [[ "$TRIES" =~ ^[0-9]+$ ]] ; then
  71         echo "/etc/kernel/tries does not contain an integer." >&2
  72         exit 1
  73     fi
  74     LOADER_ENTRY="$BOOT_ROOT/loader/entries/$MACHINE_ID-$KERNEL_VERSION+$TRIES.conf"
  75 else
  76     LOADER_ENTRY="$BOOT_ROOT/loader/entries/$MACHINE_ID-$KERNEL_VERSION.conf"
  77 fi
  78
  79 cp "$KERNEL_IMAGE" "$BOOT_DIR_ABS/linux" &&
  80    chown root:root "$BOOT_DIR_ABS/linux" &&
  81    chmod 0644 "$BOOT_DIR_ABS/linux" || {
  82     echo "Could not copy '$KERNEL_IMAGE to '$BOOT_DIR_ABS/linux'." >&2
  83     exit 1
  84 }
  85
  86 INITRD_OPTIONS=( "${@:${INITRD_OPTIONS_START}}" )
  87
  88 for initrd in "${INITRD_OPTIONS[@]}"; do
  89     if [[ -f "${initrd}" ]]; then
  90         initrd_basename="$(basename ${initrd})"
  91         [ "$KERNEL_INSTALL_VERBOSE" -gt 0 ] && \
  92             echo "Installing $BOOT_DIR_ABS/${initrd_basename}"
  93         cp "${initrd}" "$BOOT_DIR_ABS/${initrd_basename}" &&
  94             chown root:root "$BOOT_DIR_ABS/${initrd_basename}" &&
  95             chmod 0644 "$BOOT_DIR_ABS/${initrd_basename}" || {
  96              echo "Could not copy '${initrd}' to '$BOOT_DIR_ABS/${initrd_basename}'." >&2
  97              exit 1
  98         }
  99     fi
 100 done
 101
 102 # If no initrd option is supplied, fallback to "initrd" which is
 103 # the name used by dracut when generating it in its kernel-install hook
 104 [[ ${#INITRD_OPTIONS[@]} == 0 ]] && INITRD_OPTIONS=( initrd )
 105
 106 mkdir -p "${LOADER_ENTRY%/*}" || {
 107     echo "Could not create loader entry directory '${LOADER_ENTRY%/*}'." >&2
 108     exit 1
 109 }
 110
 111 [ "$KERNEL_INSTALL_VERBOSE" -gt 0 ] && \
 112     echo "Creating $LOADER_ENTRY"
 113 {
 114     echo "title      $PRETTY_NAME"
 115     echo "version    $KERNEL_VERSION"
 116     echo "machine-id $MACHINE_ID"
 117     echo "options    ${BOOT_OPTIONS[*]}"
 118     echo "linux      $BOOT_DIR/linux"
 119     for initrd in "${INITRD_OPTIONS[@]}"; do
 120         [[ -f $BOOT_DIR_ABS/$(basename ${initrd}) ]] && \
 121             echo "initrd     $BOOT_DIR/$(basename ${initrd})"
 122     done
 123     :
 124 } > "$LOADER_ENTRY" || {
 125     echo "Could not create loader entry '$LOADER_ENTRY'." >&2
 126     exit 1
 127 }
 128 exit 0