rc.d/init.d/functions

   1 #!/bin/bash
   2 #
   3 # functions     This file contains functions to be used by most or all
   4 #               shell scripts in the /etc/init.d directory.
   5 #
   6 # Version:      @(#) /etc/init.d/functions 1.01 26-Oct-1993
   7 #
   8 # Author:       Miquel van Smoorenburg, <miquels@drinkel.nl.mugnet.org>
   9 # Hacked by:    Greg Galloway and Marc Ewing
  10 # Modified for PLD by Marek Obuchowicz <elephant@shadow.eu.org>
  11 #
  12
  13 # First set up a default search path.
  14 export PATH="/sbin:/usr/sbin:/bin:/usr/bin"
  15
  16 # Some functions to handle PLD-style messages
  17 function show() {
  18   text="$*".............................................
  19   echo -ne `echo $text | cut -c1-45`
  20 }
  21
  22 function busy() {
  23   echo -ne '\e[0;36m[\e[0;35m BUSY \e[0;36m]\e[0;37m'
  24 }
  25
  26 function ok() {
  27   echo -e '\e[0;36m[\e[0;32m DONE \e[0;36m]\e[0;37m'
  28 }
  29
  30 function fail() {
  31   echo -e '\e[0;36m[\e[0;31m FAIL \e[0;36m]\e[0;37m'
  32 }
  33
  34 function died() {
  35   echo -e '\e[0;36m[\e[0;31m DIED \e[0;36m]\e[0;37m'
  36 }
  37
  38 function deltext() {
  39   echo -ne '\b\b\b\b\b\b\b\b'
  40 }
  41
  42 # A function to start a program.
  43 daemon() {
  44         TMPFILE=`mktemp /tmp/init-XXXXXX`
  45
  46         nicelevel=0
  47         # Test syntax.
  48         case $1 in
  49             '')    echo '$0: Usage: daemon [+/-nicelevel] {program}'
  50                    return 1;;
  51             -*|+*) nicelevel=$1
  52                    shift;;
  53         esac
  54
  55         # make sure it doesn't core dump anywhere; while this could mask
  56         # problems with the daemon, it also closes some security problems
  57         ulimit -c 0
  58
  59         # And start it up.
  60         busy
  61         if nice -n $nicelevel "$@" &> $TMPFILE; then
  62           deltext
  63           ok
  64         else
  65           deltext
  66           fail
  67           cat $TMPFILE
  68         fi
  69         rm -f $TMPFILE
  70 }
  71
  72 # A function to stop a program.
  73 killproc() {
  74         # Test syntax.
  75         if [ $# = 0 ]; then
  76                 echo "Usage: killproc {program} [signal]"
  77                 return 1
  78         fi
  79
  80         busy
  81
  82         TMPFILE=`mktemp /tmp/init-XXXXXX`
  83
  84         notset=0
  85         # check for second arg to be kill level
  86         if [ "$2" != "" ] ; then
  87                 killlevel=$2
  88         else
  89                 notset=1
  90                 killlevel="-9"
  91         fi
  92
  93         # Save basename.
  94         base=`basename $1`
  95
  96         # Find pid.
  97         pid=`pidofproc $base`
  98
  99         # Kill it.
 100         if [ "$pid" != "" ] ; then
 101                 if [ "$notset" = 1 ] ; then
 102                         # TERM first, then KILL if not dead
 103                         kill -TERM $pid &> $TMPFILE
 104                         usleep 100000
 105                         dead=`ps aux | awk '{print $2}' | grep $pid`
 106                         if [ "$dead" != "" ]; then
 107                                 sleep 3
 108                                 kill -KILL $pid &> $TMPFILE
 109                         fi
 110                 # use specified level only
 111                 else
 112                         kill $killlevel $pid &> $TMPFILE
 113                 fi
 114         else
 115           rm -f /var/run/$base.pid
 116           deltext
 117           fail
 118           return
 119         fi
 120
 121         # Remove pid file if any.
 122         rm -f /var/run/$base.pid
 123
 124         if [ -z "`cat $TMPFILE`" ]; then
 125                 deltext
 126                 ok
 127         else
 128                 deltext
 129                 died
 130         fi
 131         rm -f $TMPFILE
 132 }
 133
 134 # A function to find the pid of a program.
 135 pidofproc() {
 136         # Test syntax.
 137         if [ $# = 0 ] ; then
 138                 echo "Usage: pidofproc {program}"
 139                 return 1
 140         fi
 141
 142         # First try "/var/run/*.pid" files
 143         if [ -f /var/run/$1.pid ] ; then
 144                 pid=`head -1 /var/run/$1.pid`
 145                 if [ "$pid" != "" ] ; then
 146                         echo $pid
 147                         return 0
 148                 fi
 149         fi
 150
 151         # Next try "pidof"
 152         pid=`pidof $1`
 153         if [ "$pid" != "" ] ; then
 154                 echo $pid
 155                 return 0
 156         fi
 157
 158         # Finally try to extract it from ps
 159         ps auxw | awk 'BEGIN { prog=ARGV[1]; ARGC=1 }
 160                            { if ((prog == $11) || (("(" prog ")") == $11) ||
 161                            ((prog ":") == $11)) { print $2 } }' $1
 162 }
 163 status() {
 164         # Test syntax.
 165         if [ $# = 0 ] ; then
 166                 echo "Usage: status {program}"
 167                 return 1
 168         fi
 169
 170         # First try "pidof"
 171         pid=`pidof $1`
 172         if [ "$pid" != "" ] ; then
 173                 echo "$1 (pid $pid) is running..."
 174                 return 0
 175         else
 176                 pid=`ps auxww | grep $1 | egrep -v grep\|$0 | awk '{print $2}'`
 177                 if [ "$pid" != "" ] ; then
 178                         echo "$1 (pid $pid) is running..."
 179                         return 0
 180                 fi
 181         fi
 182
 183         # Next try "/var/run/*.pid" files
 184         if [ -f /var/run/$1.pid ] ; then
 185                 pid=`head -1 /var/run/$1.pid`
 186                 if [ "$pid" != "" ] ; then
 187                         echo "$1 dead but pid file exists"
 188                         return 1
 189                 fi
 190         fi
 191         # See if /var/lock/subsys/$1 exists
 192         if [ -f /var/lock/subsys/$1 ]; then
 193                 echo "$1 dead but subsys locked"
 194                 return 2
 195         fi
 196         echo "$1 is stopped"
 197         return 3
 198 }