dracut-initramfs-restore.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 set -e
   6
   7 KERNEL_VERSION="$(uname -r)"
   8
   9 [[ -f /etc/machine-id ]] && read MACHINE_ID < /etc/machine-id
  10
  11 if [[ $MACHINE_ID ]] && [[ -d /boot/${MACHINE_ID} || -L /boot/${MACHINE_ID} ]] ; then
  12     IMG="/boot/${MACHINE_ID}/${KERNEL_VERSION}/initrd"
  13 fi
  14 [[ -f $IMG ]] || IMG="/boot/initramfs-${KERNEL_VERSION}.img"
  15
  16 cd /run/initramfs
  17
  18 [ -f .need_shutdown -a -f "$IMG" ] || exit 1
  19 if zcat "$IMG"  | cpio -id --quiet >/dev/null; then
  20     rm -f -- .need_shutdown
  21 elif xzcat "$IMG"  | cpio -id --quiet >/dev/null; then
  22     rm -f -- .need_shutdown
  23 else
  24     # something failed, so we clean up
  25     echo "Unpacking of $IMG to /run/initramfs failed" >&2
  26     rm -f -- /run/initramfs/shutdown
  27     exit 1
  28 fi
  29
  30 exit 0