51-dracut-rescue-postinst.sh

   1 #!/bin/bash
   2
   3 export LANG=C
   4
   5 KERNEL_VERSION="$1"
   6 KERNEL_IMAGE="$2"
   7
   8 [[ -f /etc/os-release ]] && . /etc/os-release
   9
  10 if [[ ! -f /etc/machine-id ]] || [[ ! -s /etc/machine-id ]]; then
  11     systemd-machine-id-setup
  12 fi
  13
  14 [[ -f /etc/machine-id ]] && read MACHINE_ID < /etc/machine-id
  15
  16 [[ $MACHINE_ID ]] || exit 1
  17 [[ -f $KERNEL_IMAGE ]] || exit 1
  18
  19 INITRDFILE="/boot/initramfs-0-rescue-${MACHINE_ID}.img"
  20 NEW_KERNEL_IMAGE="${KERNEL_IMAGE%/*}/vmlinuz-0-rescue-${MACHINE_ID}"
  21
  22 [[ -f $INITRDFILE ]] && [[ -f $NEW_KERNEL_IMAGE ]] && exit 0
  23
  24 dropindirs_sort()
  25 {
  26     suffix=$1; shift
  27     args=("$@")
  28     files=$(
  29         while (( $# > 0 )); do
  30             for i in ${1}/*${suffix}; do
  31                 [[ -f $i ]] && echo ${i##*/}
  32             done
  33             shift
  34         done | sort -Vu
  35     )
  36
  37     for f in $files; do
  38         for d in "${args[@]}"; do
  39             if [[ -f "$d/$f" ]]; then
  40                 echo "$d/$f"
  41                 continue 2
  42             fi
  43         done
  44     done
  45 }
  46
  47 # source our config dir
  48 for f in $(dropindirs_sort ".conf" "/etc/dracut.conf.d" "/usr/lib/dracut/dracut.conf.d"); do
  49     [[ -e $f ]] && . "$f"
  50 done
  51
  52 [[ $dracut_rescue_image != "yes" ]] && exit 0
  53
  54 if [[ ! -f $INITRDFILE ]]; then
  55     dracut --no-hostonly -a "rescue" "$INITRDFILE" "$KERNEL_VERSION"
  56     ((ret+=$?))
  57 fi
  58
  59 if [[ ! -f $NEW_KERNEL_IMAGE ]]; then
  60     cp --reflink=auto "$KERNEL_IMAGE" "$NEW_KERNEL_IMAGE"
  61     ((ret+=$?))
  62 fi
  63
  64 new-kernel-pkg --install "$KERNEL_VERSION" --kernel-image "$NEW_KERNEL_IMAGE" --initrdfile "$INITRDFILE" --banner "$NAME $VERSION_ID Rescue $MACHINE_ID"
  65
  66 ((ret+=$?))
  67
  68 exit $ret