8034 shutdown(1M) needs modernizing
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>
Reviewed by: Peter Tribble <peter.tribble@gmail.com>

*** 23,34 ****
  #       Use is subject to license terms.
  #
  #       Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T
  #         All Rights Reserved
  
  
- 
  #       Sequence performed to change the init state of a machine.  Only allows
  #       transitions to states 0,1,5,6,s,S (i.e.: down or administrative states).
  
  #       This procedure checks to see if you are permitted and allows an
  #       interactive shutdown.  The actual change of state, killing of
--- 23,36 ----
  #       Use is subject to license terms.
  #
  #       Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T
  #         All Rights Reserved
  
+ #
+ # Copyright 2017, OmniTI Computer Consulting, Inc. All rights reserved.
+ #
  
  #       Sequence performed to change the init state of a machine.  Only allows
  #       transitions to states 0,1,5,6,s,S (i.e.: down or administrative states).
  
  #       This procedure checks to see if you are permitted and allows an
  #       interactive shutdown.  The actual change of state, killing of
*** 42,61 ****
  
  notify() {
          /usr/sbin/wall -a <<-!
          $*
          !
!         if [ -x /usr/sbin/showmount -a -x /usr/sbin/rwall ]
!         then
!                 remotes=`/usr/sbin/showmount`
!                 if [ "X${remotes}" != "X" ]
!                 then
!                         /usr/sbin/rwall -q ${remotes} <<-!
!                         $*
!                         !
!                 fi
!         fi
  }
  
  nologin=/etc/nologin
  
  # Set the PATH so that to guarentee behavior of shell built in commands
--- 44,56 ----
  
  notify() {
          /usr/sbin/wall -a <<-!
          $*
          !
!         # We used to do rwall here if showmounts had any output, but
!         # rwall is a potential security hole, and it could block this, so
!         # we don't bother with it anymore.
  }
  
  nologin=/etc/nologin
  
  # Set the PATH so that to guarentee behavior of shell built in commands
*** 126,136 ****
                  ;;
          \?)     usage
                  ;;
          esac
  done
! shift `expr $OPTIND - 1`
  
  echo '\nShutdown started.    \c'
  /usr/bin/date
  echo
  
--- 121,131 ----
                  ;;
          \?)     usage
                  ;;
          esac
  done
! shift $(($OPTIND - 1))
  
  echo '\nShutdown started.    \c'
  /usr/bin/date
  echo
  
*** 143,155 ****
  # If other users are on the system (and any grace period is given), warn them.
  
  for i in 7200 3600 1800 1200 600 300 120 60 30 10; do
          if [ ${grace} -gt $i ]
          then
!                 hours=`/usr/bin/expr ${grace} / 3600`
!                 minutes=`/usr/bin/expr ${grace} % 3600 / 60`
!                 seconds=`/usr/bin/expr ${grace} % 60`
                  time=""
                  if [ ${hours} -gt 1 ]
                  then
                          time="${hours} hours "
                  elif [ ${hours} -eq 1 ]
--- 138,150 ----
  # If other users are on the system (and any grace period is given), warn them.
  
  for i in 7200 3600 1800 1200 600 300 120 60 30 10; do
          if [ ${grace} -gt $i ]
          then
!                 hours=$((${grace} / 3600))
!                 minutes=$((${grace} % 3600 / 60))
!                 seconds=$((${grace} % 60))
                  time=""
                  if [ ${hours} -gt 1 ]
                  then
                          time="${hours} hours "
                  elif [ ${hours} -eq 1 ]
*** 173,195 ****
                          fi
                  fi
  
                  (notify \
  "The system ${NODENAME} will be shut down in ${time}
! $*") &
  
- pid1=$!
- 
                  rm $nologin >/dev/null 2>&1
                  cat > $nologin <<-!
  
                          NO LOGINS: System going down in ${time}
                          $*
  
                  !
  
!                 /usr/bin/sleep `/usr/bin/expr ${grace} - $i`
                  grace=$i
          fi
  done
  
  # Confirm that we really want to shutdown.
--- 168,188 ----
                          fi
                  fi
  
                  (notify \
  "The system ${NODENAME} will be shut down in ${time}
! $*")
  
                  rm $nologin >/dev/null 2>&1
                  cat > $nologin <<-!
  
                          NO LOGINS: System going down in ${time}
                          $*
  
                  !
  
!                 /usr/bin/sleep $((${grace} - $i))
                  grace=$i
          fi
  done
  
  # Confirm that we really want to shutdown.
*** 210,223 ****
  # Final shutdown message, and sleep away the final 10 seconds (or less).
  
  (notify \
  "THE SYSTEM ${NODENAME} IS BEING SHUT DOWN NOW ! ! !
  Log off now or risk your files being damaged
! $*") &
  
- pid2=$!
- 
  if [ ${grace} -gt 0 ]
  then
          /usr/bin/sleep ${grace}
  fi
  
--- 203,214 ----
  # Final shutdown message, and sleep away the final 10 seconds (or less).
  
  (notify \
  "THE SYSTEM ${NODENAME} IS BEING SHUT DOWN NOW ! ! !
  Log off now or risk your files being damaged
! $*")
  
  if [ ${grace} -gt 0 ]
  then
          /usr/bin/sleep ${grace}
  fi
  
*** 224,234 ****
  # Go to the requested initstate.
  
  
  echo "Changing to init state $initstate - please wait"
  
! if [ "$pid1" ] || [ "$pid2" ]
! then
!         /usr/bin/kill $pid1 $pid2 > /dev/null 2>&1
  fi
  
  /sbin/init ${initstate}
--- 215,235 ----
  # Go to the requested initstate.
  
  
  echo "Changing to init state $initstate - please wait"
  
! # We might be racing with a system that's still booting.
! # Before starting init, check to see if smf(5) is running.  The easiest way
! # to do this is to check for the existence of the repository service door.
! 
! i=0
! # Try three times, sleeping one second each time...
! while [ ! -e /etc/svc/volatile/repository_door -a $i -lt 3 ]; do
!         sleep 1
!         i=$(($i + 1))
! done
! 
! if [ ! -e /etc/svc/volatile/repository_door ]; then
!         notify "Could not find repository door, init-state change may fail!"
  fi
  
  /sbin/init ${initstate}