bootscripts/contrib/new-boot-0.2/sbin/init.d/rc

   1 #!/bin/sh
   2
   3 #Copyright (c) 2001 Matthias S. Benkmann
   4 #licensed under the GNU General Public License (GPL) Version 2
   5
   6 runlevel_prefix="runlevel."
   7 runlevel_suffix=""
   8
   9 HELP_TEXT='
  10 telinit invocations:
  11
  12 telinit help            displays this help text
  13
  14 telinit <num>
  15   or
  16 telinit '"${runlevel_prefix}<num>${runlevel_suffix}"\
  17 '       will go up or down to runlevel <num>
  18
  19 telinit single          will bring the system to maintenance mode
  20
  21 telinit <service> <params>
  22                         will call <service> with arguments <params>,
  23                         e.g. telinit logging status
  24                         You should prefer this method over calling boot
  25                         scripts directly because telinit makes sure the
  26                         environment is set up similar to that created by init
  27                         when it starts boot scripts.
  28
  29                         NOTE: If you call
  30                                 telinit <service> start
  31                               or
  32                                 telinit <service> stop
  33                               you will bypass the dependency management system,
  34                               i.e. the script will be started or stopped
  35                               without init knowing about it.
  36                               Read initctl(8) to understand all the
  37                               implications of this.
  38 '
  39
  40
  41
  42 #locate and source functions script
  43 source `PATH=$INIT_D/:${0%/*}/:${0%/*/*}/:${0%/*/*/*}/ type -p functions`
  44
  45 #block SIGHUP in case the script is called over a modem line that disconnects
  46 #  (or someone closes his xterm after calling the script, or ...)
  47 #block SIGINT to prevent nervous users from Ctrl-C'ing us
  48 #block SIGQUIT to prevent users from Ctrl-\'ing us.
  49 #block SIGTSTP to prevent users from Ctrl-Z'ing us.
  50 #We use ":" rather than "" because the latter would be inherited by processes
  51 #  such as fsck that we start (SIG_IGN is inherited) while the former is not.
  52 #  This means that with ":" the scripts called by rc can be interrupted. It's
  53 #  just the rc script that you can't interrupt. Usually a user would only want
  54 #  to interrupt a certain script but if he presses the keys at the wrong time,
  55 #  he might hit rc by accident.
  56 trap ":" SIGHUP SIGINT SIGQUIT SIGTSTP
  57
  58
  59 remove_trailing_slash()
  60 {
  61   i=${1%/}              #cut off trailing slash
  62   i=${i:-/}             #if string is now empty put it back
  63   echo $i
  64 }
  65
  66 needdir()
  67 {
  68   case "z$1" in
  69     z) return 0 ;;
  70     -*) initctl -n "$@" ;; #if switch is specified, use normal need
  71   esac
  72
  73   dir=$1
  74   dir=${1##[^/]*}          #dir="" if $1 is not an absolute path, else dir=$1
  75   dir=${dir:-$INIT_D/$1}   #if dir="" (i.e. $1 not abs.) then dir=$INIT_D/$1
  76   dir=`remove_trailing_slash $dir`
  77   #dir is a non-empty absolute path without a trailing slash now.
  78
  79   #test if $dir is a directory, if not try using normal need on input
  80   test -d $dir || { initctl -n "$@"; return $? ; }
  81
  82   servicelist=`echo $dir/*`     #list of all services in $dir
  83   if [ "$servicelist" = $dir'/*' ]; then return 0; fi  #if list is empty then return
  84
  85   errcode=0
  86   for service in $servicelist
  87   do
  88     case $service in
  89       *~) ;;   #do not run backup files
  90
  91       #strip pathname (see comment at top) and +
  92       #return immediately if error because + services are essential
  93       */+*) initctl -n ${service##*/+} || return 1 ;;
  94
  95       #strip pathname (see comment at top)
  96       *) initctl -n ${service##*/} || errcode=2 ;;
  97     esac
  98   done
  99
 100   return $errcode
 101 }
 102
 103 #unlike get_inittab_entry in telinit, this function returns all words for an
 104 #entry with more than one word after the "="
 105 get_inittab_entry2()
 106 {
 107   expr "`echo ; cat $INIT_ROOT/etc/inittab ; echo`" : $'.*\n[ \r\t]*'${1}$'[ \r\t]*=*[ \r\t]*''\('$'[^\n]*''\).*'
 108 }
 109
 110 case "$1" in
 111   start-dir)
 112     if [ $# -lt 2 ]; then exit 1; fi
 113
 114     needdir $2 || exit_if_fatal_error
 115
 116     rl=${2##*$runlevel_prefix}
 117     rl=${rl%$runlevel_suffix}
 118     echo -n Runlevel $rl reached!
 119     print_status success
 120     ;;
 121
 122   start)
 123     if [ $# -lt 2 ]; then exit 1; fi
 124
 125     parameters="$@"
 126
 127     for (( i=0; $i<2 ; i=$i+1 )); do
 128       while [ $# -ge 2 ]; do
 129          #target could be a script (e.g. "single") rather than a runlevel num
 130          if [ -e "$INIT_D/$2" ];
 131                         then target=$2
 132                         else target=$runlevel_prefix$2$runlevel_suffix
 133          fi
 134
 135          if [ -e "$INIT_D/$target"  ]; then break 2; fi
 136
 137          #if $target not found, try the next parameter
 138          shift 1;
 139       done
 140
 141       #we didn't find a valid runlevel in the parameter list, so we try
 142       #the default setting from inittab
 143       bootprog_entry="`get_inittab_entry2 bootprog`"
 144       eval set -- $bootprog_entry
 145     done
 146
 147     if [ ! -e "$INIT_D/$target"  ]; then
 148        echo -n 1>&2 "No valid runlevel in parameter list: "
 149        set -- $parameters
 150        shift 1  #remove start
 151        echo 1>&2 "$@"
 152        echo -n 1>&2 "No valid runlevel in bootprog parameter list: "
 153        eval set -- $bootprog_entry
 154        shift 1  #remove rc
 155        echo 1>&2 "$@"
 156        exit 1
 157     fi
 158
 159     need "$target" || exit_if_fatal_error
 160     ;;
 161
 162   stop-dir)
 163     if [ $# -lt 2 ]; then exit 1; fi
 164
 165     rl=${2##*$runlevel_prefix}
 166     rl=${rl%$runlevel_suffix}
 167     echo -n Runlevel $rl going down!
 168     print_status success
 169     ;;
 170
 171   stop)
 172     ;;
 173
 174   telinit)
 175       ########################################################
 176       #            telinit help
 177       ########################################################
 178       if [ $# == 1 -o "$2" == "help" -o "$2" == "--help" ]; then
 179         echo "$HELP_TEXT"
 180         exit 0
 181       fi
 182
 183       ########################################################
 184       #            telinit <service> <params>
 185       ########################################################
 186       if [ $# -gt 2 ]; then
 187         script=`cd $INIT_D ; PATH=$INIT_PATH type -ap $2`
 188
 189         #set scriptpath="" if script is not abs. path
 190         scriptpath=${script##[^/]*}
 191
 192         #set scriptpath=$INIT_D/$script if script not abs. path
 193         scriptpath=${scriptpath:-$INIT_D/$script}
 194
 195         if [ ! -x "$scriptpath" -o ! -f "$scriptpath" ]; then
 196           echo 1>&2 "Cannot execute $scriptpath"
 197           exit 1
 198         fi
 199         shift 2
 200         exec $scriptpath "$@"
 201         exit $?
 202       fi
 203
 204       ########################################################
 205       #            telinit <runlevel_name>|<num>
 206       ########################################################
 207
 208       #target could be a script (e.g. "single") rather than a runlevel num
 209         if [ -e "$INIT_D/$2" ];
 210                         then target=$2
 211                         else target=$runlevel_prefix$2$runlevel_suffix
 212         fi
 213
 214         if [ ! -e "$INIT_D/$target"  ]; then
 215           echo 1>&2 Illegal runlevel: "$2"
 216           exit 1
 217         fi
 218
 219         make_dir_list()
 220         {
 221           if [ ! -d "$INIT_D/$1" ]; then return; fi
 222           echo $1
 223           for f in $INIT_D/$1/* ; do
 224             f=${f##*/+}
 225             make_dir_list ${f##*/}
 226           done
 227         }
 228
 229       #list of all directories needed by the target
 230         dirlist=$target" "`make_dir_list $target`
 231
 232         cur_services=`initctl -d 2>/dev/null`
 233         cur_services=`expr "$cur_services" : '.*AVAILABLE SERVICES:\(.*\)STARTING SERVICES:.*'`
 234
 235       #find the highest service in the stack of available services that is
 236       #one of the needed directories; everything above this service is not
 237       #part of the target runlevel
 238         rollback_target=""
 239         for s1 in $cur_services EnD_ofLiSt__; do
 240           for s2 in $dirlist; do
 241             if [ $s1 == $s2 ]; then rollback_target=$s1; break 2; fi
 242           done
 243         done
 244
 245         need -r "$rollback_target" || exit_if_fatal_error
 246         need "$target" || exit_if_fatal_error
 247     ;;
 248   *)
 249     exit 1
 250     ;;
 251 esac
 252
 253 exit 0