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EDIT :: shutdown.sh

#!/bin/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 $p >/dev/null 2>&1 && break done hash kexec fi trap "emergency_shell --shutdown shutdown Signal caught!" 0 getarg 'rd.break=pre-shutdown' && emergency_shell --shutdown pre-shutdown "Break before pre-shutdown" source_hook pre-shutdown warn "Killing all remaining processes" killall_proc_mountpoint /oldroot || sleep 0.2 umount_a() { local _did_umount="n" while read a mp a || [ -n "$mp" ]; 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=0 for __f in $hookdir/shutdown/*.sh; do [ -e "$__f" ] || continue ( . "$__f" $1 ) if [ $? -eq 0 ]; then rm -f -- $__f else __s=1 fi done return $__s } _cnt=0 while [ $_cnt -le 40 ]; do _check_shutdown && break _cnt=$(($_cnt+1)) done [ $_cnt -ge 40 ] && _check_shutdown final getarg 'rd.break=shutdown' && emergency_shell --shutdown shutdown "Break before shutdown" case "$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

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