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