archive/etc/rc.d/rc.shutdown

   1 #! /bin/sh -
   2 #
   3 # Prepare to halt or reboot the system
   4 #
   5 # Copyright (c) 2017-2020 Matias Fonzo, <selk@dragora.org>.
   6 #
   7 # Licensed under the Apache License, Version 2.0 (the "License");
   8 # you may not use this file except in compliance with the License.
   9 # You may obtain a copy of the License at
  10 #
  11 #    http://www.apache.org/licenses/LICENSE-2.0
  12 #
  13 # Unless required by applicable law or agreed to in writing, software
  14 # distributed under the License is distributed on an "AS IS" BASIS,
  15 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16 # See the License for the specific language governing permissions and
  17 # limitations under the License.
  18
  19 umask 022
  20 IFS='
  21         '
  22 PATH=/usr/local/sbin:/usr/local/bin:/sbin:/usr/sbin:/bin:/usr/bin
  23
  24 # Set linefeed mode to avoid staircase effect
  25 stty onlcr 0>&1
  26
  27 # Be immune to the following signals
  28 trap "" HUP INT QUIT ABRT TERM
  29
  30 # Save system clock
  31
  32 if grep -q '^RC_HWCLOCK=local' /etc/rc.conf
  33 then
  34     echo "(Shutdown) Saving hardware clock in local time"
  35     hwclock --systohc --localtime
  36 else
  37     echo "(Shutdown) Saving hardware clock in UTC"
  38     hwclock --systohc --utc
  39 fi
  40
  41 # Stop any quota system (if needed)
  42
  43 if egrep -q -m 1 '(usr|grp)quota' /etc/fstab
  44 then
  45     if type quotaoff > /dev/null
  46     then
  47         echo "(Shutdown) Set any quota file system to OFF"
  48         quotaoff -va
  49     fi
  50 fi
  51
  52 # Save the random number generator, see random(4)
  53
  54 echo "(Shutdown) Saving random number generator"
  55 echo "    /dev/urandom <-> /etc/random-seed ..."
  56
  57 # Read pool size from /proc or assign a default value
  58 read -r < /proc/sys/kernel/random/poolsize size || size=512
  59
  60 # Save seed file containing the whole entropy pool
  61 dd if=/dev/urandom of=/etc/random-seed count=1 bs=${size} 2> /dev/null
  62 unset size ; chmod 600 -- /etc/random-seed
  63
  64 # Try to write a login record (at /var/log/wtmp)
  65 halt -w
  66
  67 # Flush file system buffers, update super block
  68 sync
  69
  70 # Stop FUSE filesystem
  71 if test -x /etc/rc.d/rc.fuse
  72 then
  73     /etc/rc.d/rc.fuse stop > /dev/null
  74 fi
  75
  76 # Kill all processes, except the one that is currently running
  77 killall5 -15 -o $$
  78 sleep 9
  79
  80 echo "(Shutdown) Deactivating swap devices"
  81 swapoff -v -a
  82
  83 echo "(Shutdown) Unmounting local and remote file systems"
  84 umount -v -a -r
  85 sleep 1
  86 sync
  87
  88 echo "(Shutdown) Remounting root filesystem in read-only mode"
  89 mount -n -o remount,ro /
  90
  91 # Wait for completion of all the processes
  92 wait
  93
  94 # Reboot, or halt the system
  95 case $0 in
  96 *.reboot)
  97     echo "Rebooting ..."
  98     exec reboot -d -f
  99     ;;
 100 *)
 101     exec halt -d -f -p
 102     ;;
 103 esac
 104