/usr/lib/dracut/modules.d/99shutdown/shutdown.sh is in dracut-core 047-2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 | #!/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 $p >/dev/null 2>&1 && break
done
hash kexec
fi
trap "emergency_shell --shutdown shutdown Signal caught!" 0
getarg 'rd.break=pre-shutdown' && emergency_shell --shutdown pre-shutdown "Break before pre-shutdown"
source_hook pre-shutdown
warn "Killing all remaining processes"
killall_proc_mountpoint /oldroot
umount_a() {
local _did_umount="n"
while read a mp a || [ -n "$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
|