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
  12 if [[ ! -f /etc/machine-id ]] || [[ ! -s /etc/machine-id ]]; then
  13     systemd-machine-id-setup
  14 fi
  15
  16 [[ -f /etc/machine-id ]] && read MACHINE_ID < /etc/machine-id
  17
  18 [[ $MACHINE_ID ]] || exit 1
  19 [[ -f $KERNEL_IMAGE ]] || exit 1
  20
  21 INITRDFILE="/boot/initramfs-0-rescue-${MACHINE_ID}.img"
  22 NEW_KERNEL_IMAGE="${KERNEL_IMAGE%/*}/vmlinuz-0-rescue-${MACHINE_ID}"
  23
  24 [[ -f $INITRDFILE ]] && [[ -f $NEW_KERNEL_IMAGE ]] && exit 0
  25
  26 dropindirs_sort()
  27 {
  28     suffix=$1; shift
  29     args=("$@")
  30     files=$(
  31         while (( $# > 0 )); do
  32             for i in ${1}/*${suffix}; do
  33                 [[ -f $i ]] && echo ${i##*/}
  34             done
  35             shift
  36         done | sort -Vu
  37     )
  38
  39     for f in $files; do
  40         for d in "${args[@]}"; do
  41             if [[ -f "$d/$f" ]]; then
  42                 echo "$d/$f"
  43                 continue 2
  44             fi
  45         done
  46     done
  47 }
  48
  49 # source our config dir
  50 for f in $(dropindirs_sort ".conf" "/etc/dracut.conf.d" "/usr/lib/dracut/dracut.conf.d"); do
  51     [[ -e $f ]] && . "$f"
  52 done
  53
  54 [[ $dracut_rescue_image != "yes" ]] && exit 0
  55
  56 if [[ ! -f $INITRDFILE ]]; then
  57     dracut --no-hostonly -a "rescue" "$INITRDFILE" "$KERNEL_VERSION"
  58     ((ret+=$?))
  59 fi
  60
  61 if [[ ! -f $NEW_KERNEL_IMAGE ]]; then
  62     cp "$KERNEL_IMAGE" "$NEW_KERNEL_IMAGE"
  63     ((ret+=$?))
  64 fi
  65
  66 new-kernel-pkg --install "$KERNEL_VERSION" --kernel-image "$NEW_KERNEL_IMAGE" --initrdfile "$INITRDFILE" --banner "$NAME $VERSION_ID Rescue $MACHINE_ID"
  67
  68 ((ret+=$?))
  69
  70 exit $ret