51-dracut-rescue-postinst.sh

   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 export LANG=C
   6
   7 KERNEL_VERSION="$1"
   8 KERNEL_IMAGE="$2"
   9
  10 [[ -f /etc/os-release ]] && . /etc/os-release
  11 [[ -f /etc/machine-id ]] && read MACHINE_ID < /etc/machine-id
  12
  13 INITRDFILE="/boot/initramfs-${MACHINE_ID}-rescue.img"
  14 [[ -f $INITRDFILE ]] && exit 0
  15
  16 dropindirs_sort()
  17 {
  18     suffix=$1; shift
  19     args=("$@")
  20     files=$(
  21         while (( $# > 0 )); do
  22             for i in ${1}/*${suffix}; do
  23                 [[ -f $i ]] && echo ${i##*/}
  24             done
  25             shift
  26         done | sort -Vu
  27     )
  28
  29     for f in $files; do
  30         for d in "${args[@]}"; do
  31             if [[ -f "$d/$f" ]]; then
  32                 echo "$d/$f"
  33                 continue 2
  34             fi
  35         done
  36     done
  37 }
  38
  39 # source our config dir
  40 for f in $(dropindirs_sort ".conf" "/etc/dracut.conf.d" "/usr/lib/dracut/dracut.conf.d"); do
  41     [[ -e $f ]] && . "$f"
  42 done
  43
  44 [[ $dracut_rescue_image != "yes" ]] && exit 0
  45
  46 dracut --no-hostonly  -a "rescue" "$INITRDFILE" "$KERNEL_VERSION"
  47 ((ret+=$?))
  48
  49 cp "$KERNEL_IMAGE" "${KERNEL_IMAGE%/*}/vmlinuz-${MACHINE_ID}-rescue"
  50 ((ret+=$?))
  51
  52 KERNEL_IMAGE="${KERNEL_IMAGE%/*}/vmlinuz-${MACHINE_ID}-rescue"
  53
  54 new-kernel-image --install "$KERNEL_VERSION" --kernel-image "$KERNEL_IMAGE" --initrdfile "$INITRDFILE" --banner "$PRETTY_NAME Rescue"
  55
  56 ((ret+=$?))
  57
  58 exit $ret