50-dracut.install

   1 #!/bin/sh
   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="$4"
   9
  10 ret=0
  11 case "$COMMAND" in
  12     add)
  13         INITRD_IMAGE_PREGENERATED=${KERNEL_IMAGE%/*}/initrd
  14         if [[ -f ${INITRD_IMAGE_PREGENERATED} ]]; then
  15             # we found an initrd at the same place as the kernel
  16             # use this and don't generate a new one
  17             cp "$INITRD_IMAGE_PREGENERATED" "$BOOT_DIR_ABS/initrd" \
  18                 && chown root:root "$BOOT_DIR_ABS/initrd" \
  19                 && chmod 0600 "$BOOT_DIR_ABS/initrd" \
  20                 && exit 0
  21         fi
  22
  23         if [[ -f /etc/kernel/cmdline ]]; then
  24             readarray -t BOOT_OPTIONS < /etc/kernel/cmdline
  25         fi
  26
  27         if ! [[ "${BOOT_OPTIONS[@]}" ]]; then
  28             read -ar BOOT_OPTIONS < /proc/cmdline
  29         fi
  30
  31         unset noimageifnotneeded
  32
  33         for ((i=0; i < "${#BOOT_OPTIONS[@]}"; i++)); do
  34             if [[ ${BOOT_OPTIONS[$i]} == root\=PARTUUID\=* ]]; then
  35                 noimageifnotneeded="yes"
  36                 break
  37             fi
  38         done
  39         dracut ${noimageifnotneeded:+--noimageifnotneeded} "$BOOT_DIR_ABS"/initrd "$KERNEL_VERSION"
  40         ret=$?
  41         ;;
  42     remove)
  43         rm -f -- "$BOOT_DIR_ABS"/initrd
  44         ret=$?
  45         ;;
  46 esac
  47 exit $ret