#!/bin/sh
# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
# ex: ts=8 sw=4 sts=4 et filetype=sh
#
# Licensed under the GPLv2
#
# Copyright 2011, Red Hat, Inc.
# Harald Hoyer <harald@redhat.com>
ACTION="$1"
[ -w /dev/console ] && exec </dev/console >>/dev/console 2>>/dev/console
export TERM=linux
export PATH=/usr/sbin:/usr/bin:/sbin:/bin
. /lib/dracut-lib.sh
if [ "$(stat -c '%T' -f /)" = "tmpfs" ]; then
mount -o remount,rw /
fi
mkdir /oldsys
for i in sys proc run dev; do
mkdir /oldsys/$i
mount --move /oldroot/$i /oldsys/$i
done
# if "kexec" was installed after creating the initramfs, we try to copy it from the real root
# libz normally is pulled in via kmod/modprobe and udevadm
if [ "$ACTION" = "kexec" ] && ! command -v kexec >/dev/null 2>&1; then
for p in /usr/sbin /usr/bin /sbin /bin; do
cp -a /oldroot/${p}/kexec $p >/dev/null 2>&1 && break
done
hash kexec
fi
trap "emergency_shell --shutdown shutdown Signal caught!" 0
getarg 'rd.break=pre-shutdown' && emergency_shell --shutdown pre-shutdown "Break before pre-shutdown"
source_hook pre-shutdown
warn "Killing all remaining processes"
killall_proc_mountpoint /oldroot
umount_a() {
local _did_umount="n"
while read a mp a; do
if strstr "$mp" oldroot; then
if umount "$mp"; then
_did_umount="y"
warn "Unmounted $mp."
fi
fi
done </proc/mounts
losetup -D
[ "$_did_umount" = "y" ] && return 0
return 1
}
_cnt=0
while [ $_cnt -le 40 ]; do
umount_a 2>/dev/null || break
_cnt=$(($_cnt+1))
done
[ $_cnt -ge 40 ] && umount_a
if strstr "$(cat /proc/mounts)" "/oldroot"; then
warn "Cannot umount /oldroot"
for _pid in /proc/*; do
_pid=${_pid##/proc/}
case $_pid in
*[!0-9]*) continue;;
esac
[ $_pid -eq $$ ] && continue
[ -e "/proc/$_pid/exe" ] || continue
[ -e "/proc/$_pid/root" ] || continue
if strstr "$(ls -l /proc/$_pid /proc/$_pid/fd 2>/dev/null)" "oldroot"; then
warn "Blocking umount of /oldroot [$_pid] $(cat /proc/$_pid/cmdline)"
else
warn "Still running [$_pid] $(cat /proc/$_pid/cmdline)"
fi
ls -l "/proc/$_pid/exe" 2>&1 | vwarn
ls -l "/proc/$_pid/fd" 2>&1 | vwarn
done
fi
_check_shutdown() {
local __f
local __s=1
for __f in $hookdir/shutdown/*.sh; do
[ -e "$__f" ] || continue
( . "$__f" $1 )
if [ $? -eq 0 ]; then
rm -f -- $__f
__s=0
fi
done
return $__s
}
while _check_shutdown; do
:
done
_check_shutdown final
getarg 'rd.break=shutdown' && emergency_shell --shutdown shutdown "Break before shutdown"
case "$ACTION" in
reboot|poweroff|halt)
$ACTION -f -d -n
warn "$ACTION failed!"
;;
kexec)
kexec -e
warn "$ACTION failed!"
reboot -f -d -n
;;
*)
warn "Shutdown called with argument '$ACTION'. Rebooting!"
reboot -f -d -n
;;
esac
emergency_shell --shutdown shutdown