packaging/openssh-server.init

   1 #! /bin/sh
   2
   3 ### BEGIN INIT INFO
   4 # Provides:             sshd
   5 # Required-Start:       $remote_fs $syslog
   6 # Required-Stop:        $remote_fs $syslog
   7 # Default-Start:        2 3 4 5
   8 # Default-Stop:
   9 # Short-Description:    OpenBSD Secure Shell server
  10 ### END INIT INFO
  11
  12 set -e
  13
  14 # /etc/init.d/ssh: start and stop the OpenBSD "secure shell(tm)" daemon
  15
  16 test -x /usr/sbin/sshd || exit 0
  17
  18 umask 022
  19
  20 export SSHD_OOM_ADJUST=-17
  21 if test -f /etc/default/ssh; then
  22     . /etc/default/ssh
  23 fi
  24
  25 # Are we in a virtual environment that doesn't support modifying
  26 # /proc/self/oom_adj?
  27 if grep -q 'envID:.*[1-9]' /proc/self/status; then
  28     unset SSHD_OOM_ADJUST
  29 fi
  30
  31 . /lib/lsb/init-functions
  32
  33 if [ -n "$2" ]; then
  34     SSHD_OPTS="$SSHD_OPTS $2"
  35 fi
  36
  37 # Are we running from init?
  38 run_by_init() {
  39     ([ "$previous" ] && [ "$runlevel" ]) || [ "$runlevel" = S ]
  40 }
  41
  42 check_for_no_start() {
  43     # forget it if we're trying to start, and /etc/ssh/sshd_not_to_be_run exists
  44     if [ -e /etc/ssh/sshd_not_to_be_run ]; then
  45         if [ "$1" = log_end_msg ]; then
  46             log_end_msg 0
  47         fi
  48         if ! run_by_init; then
  49             log_action_msg "OpenBSD Secure Shell server not in use (/etc/ssh/sshd_not_to_be_run)"
  50         fi
  51         exit 0
  52     fi
  53 }
  54
  55 check_dev_null() {
  56     if [ ! -c /dev/null ]; then
  57         if [ "$1" = log_end_msg ]; then
  58             log_end_msg 1 || true
  59         fi
  60         if ! run_by_init; then
  61             log_action_msg "/dev/null is not a character device!"
  62         fi
  63         exit 1
  64     fi
  65 }
  66
  67 check_privsep_dir() {
  68     # Create the PrivSep empty dir if necessary
  69     if [ ! -d /var/run/sshd ]; then
  70         mkdir /var/run/sshd
  71         chmod 0755 /var/run/sshd
  72     fi
  73 }
  74
  75 check_config() {
  76     if [ ! -e /etc/ssh/sshd_not_to_be_run ]; then
  77         /usr/sbin/sshd $SSHD_OPTS -t || exit 1
  78     fi
  79 }
  80
  81 export PATH="${PATH:+$PATH:}/usr/sbin:/sbin"
  82
  83 case "$1" in
  84   start)
  85         check_privsep_dir
  86         check_for_no_start
  87         check_dev_null
  88         log_daemon_msg "Starting OpenBSD Secure Shell server" "sshd"
  89         if start-stop-daemon --start --quiet --oknodo --pidfile /var/run/sshd.pid --exec /usr/sbin/sshd -- $SSHD_OPTS; then
  90             log_end_msg 0
  91         else
  92             log_end_msg 1
  93         fi
  94         ;;
  95   stop)
  96         log_daemon_msg "Stopping OpenBSD Secure Shell server" "sshd"
  97         if start-stop-daemon --stop --quiet --oknodo --pidfile /var/run/sshd.pid; then
  98             log_end_msg 0
  99         else
 100             log_end_msg 1
 101         fi
 102         ;;
 103
 104   reload|force-reload)
 105         check_for_no_start
 106         check_config
 107         log_daemon_msg "Reloading OpenBSD Secure Shell server's configuration" "sshd"
 108         if start-stop-daemon --stop --signal 1 --quiet --oknodo --pidfile /var/run/sshd.pid --exec /usr/sbin/sshd; then
 109             log_end_msg 0
 110         else
 111             log_end_msg 1
 112         fi
 113         ;;
 114
 115   restart)
 116         check_privsep_dir
 117         check_config
 118         log_daemon_msg "Restarting OpenBSD Secure Shell server" "sshd"
 119         start-stop-daemon --stop --quiet --oknodo --retry 30 --pidfile /var/run/sshd.pid
 120         check_for_no_start log_end_msg
 121         check_dev_null log_end_msg
 122         if start-stop-daemon --start --quiet --oknodo --pidfile /var/run/sshd.pid --exec /usr/sbin/sshd -- $SSHD_OPTS; then
 123             log_end_msg 0
 124         else
 125             log_end_msg 1
 126         fi
 127         ;;
 128
 129   try-restart)
 130         check_privsep_dir
 131         check_config
 132         log_daemon_msg "Restarting OpenBSD Secure Shell server" "sshd"
 133         set +e
 134         start-stop-daemon --stop --quiet --retry 30 --pidfile /var/run/sshd.pid
 135         RET="$?"
 136         set -e
 137         case $RET in
 138             0)
 139                 # old daemon stopped
 140                 check_for_no_start log_end_msg
 141                 check_dev_null log_end_msg
 142                 if start-stop-daemon --start --quiet --oknodo --pidfile /var/run/sshd.pid --exec /usr/sbin/sshd -- $SSHD_OPTS; then
 143                     log_end_msg 0
 144                 else
 145                     log_end_msg 1
 146                 fi
 147                 ;;
 148             1)
 149                 # daemon not running
 150                 log_progress_msg "(not running)"
 151                 log_end_msg 0
 152                 ;;
 153             *)
 154                 # failed to stop
 155                 log_progress_msg "(failed to stop)"
 156                 log_end_msg 1
 157                 ;;
 158         esac
 159         ;;
 160
 161   status)
 162         status_of_proc -p /var/run/sshd.pid /usr/sbin/sshd sshd && exit 0 || exit $?
 163         ;;
 164
 165   *)
 166         log_action_msg "Usage: /etc/init.d/ssh {start|stop|reload|force-reload|restart|try-restart|status}"
 167         exit 1
 168 esac
 169
 170 exit 0