vanhofen
5 years ago
2 changed files with 259 additions and 0 deletions
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#!/bin/sh |
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# |
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# update-rc.d Update the links in /etc/rc[0-9S].d/ |
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# |
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# (c) 2003, 2004 Phil Blundell <pb@handhelds.org> |
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# |
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# This program is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2, or (at your option) |
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# any later version. |
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# |
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# This program is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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|
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initd="/etc/init.d" |
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etcd="/etc/rc" |
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notreally=0 |
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force=0 |
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dostart=0 |
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verbose=0 |
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|
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usage() |
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{ |
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cat >&2 <<EOF |
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usage: update-rc.d [-n] [-f] [-r <root>] <basename> remove |
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update-rc.d [-n] [-r <root>] [-s] <basename> defaults [NN | sNN kNN] |
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update-rc.d [-n] [-r <root>] [-s] <basename> start|stop NN runlvl [runlvl] [...] . |
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-n: not really |
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-f: force |
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-v: verbose |
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-r: alternate root path (default is /) |
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-s: invoke start methods if appropriate to current runlevel |
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EOF |
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} |
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|
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checklinks() |
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{ |
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local i dn fn remove=0 |
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if [ "x$1" = "xremove" ]; then |
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echo " Removing any system startup links for $bn ..." |
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remove=1 |
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fi |
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|
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for i in 0 1 2 3 4 5 6 7 8 9 S; do |
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dn="${etcd}${i}.d" |
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if [ ! -d $dn ]; then |
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continue; |
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fi |
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for f in ${dn}/[SK]??${bn}; do |
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if [ -L $f ]; then |
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if [ $remove -eq 0 ]; then |
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return 1 |
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fi |
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echo " $f" |
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if [ $notreally -eq 1 ]; then |
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continue |
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fi |
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rm $f |
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fi |
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done |
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done |
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|
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return 0 |
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} |
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|
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dolink() |
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{ |
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startstop=$1 |
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lev=`echo $2 | cut -d/ -f1` |
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nn=`echo $2 | cut -d/ -f2` |
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fn="${etcd}${lev}.d/${startstop}${nn}${bn}" |
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[ $verbose -eq 1 ] && echo " $fn -> ../init.d/$bn" |
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if [ $notreally -eq 0 ]; then |
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mkdir -p `dirname $fn` |
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ln -s ../init.d/$bn $fn |
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fi |
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if [ $dostart -eq 1 ] && [ $startstop = "S" ] && [ $lev = $RUNLEVEL ]; then |
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$fn start || true |
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fi |
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} |
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|
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makelinks() |
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{ |
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if ! checklinks; then |
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echo " System startup links for $initd/$bn already exist." |
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if [ $dostart -eq 1 ] && [ $notreally -eq 0 ] && [ -L ${etcd}${RUNLEVEL}.d/S??${bn} ]; then |
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${etcd}${RUNLEVEL}.d/S??${bn} restart || true |
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fi |
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exit 0 |
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fi |
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|
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echo " Adding system startup for $initd/$bn." |
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|
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for i in $startlinks; do |
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dolink S $i |
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done |
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for i in $stoplinks; do |
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dolink K $i |
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done |
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} |
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|
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while [ $# -gt 0 ]; do |
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case $1 in |
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-n) notreally=1 |
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shift |
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continue |
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;; |
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-v) verbose=1 |
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shift |
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continue |
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;; |
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-f) force=1 |
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shift |
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continue |
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;; |
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-s) dostart=1 |
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shift |
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continue |
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;; |
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-r) shift |
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root=$1 |
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initd="${root}${initd}" |
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etcd="${root}${etcd}" |
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shift |
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;; |
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-h | --help) |
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usage |
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exit 0 |
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;; |
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-*) |
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usage |
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exit 1 |
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;; |
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*) |
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break |
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;; |
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esac |
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done |
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|
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if [ $# -lt 2 ]; then |
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usage |
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exit 1 |
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fi |
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|
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bn=$1 |
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shift |
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|
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sn=$initd/$bn |
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if [ -L "$sn" -a -n "$root" ]; then |
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if which readlink >/dev/null; then |
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while true; do |
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linksn="$(readlink "$sn")" |
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if [ -z "$linksn" ]; then |
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break |
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fi |
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|
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sn="$linksn" |
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case "$sn" in |
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/*) sn="$root$sn" ;; |
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*) sn="$initd/$sn" ;; |
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esac |
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done |
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else |
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echo "update-rc.d: readlink tool not present, cannot check whether \ |
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$sn symlink points to a valid file." >&2 |
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fi |
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fi |
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|
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if [ $1 != "remove" ]; then |
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if [ ! -f "$sn" ]; then |
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echo "update-rc.d: $initd/$bn: file does not exist" >&2 |
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exit 1 |
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fi |
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else |
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if [ -f "$sn" ]; then |
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if [ $force -eq 1 ]; then |
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echo "update-rc.d: $initd/$bn exists during rc.d purge (continuing)" >&2 |
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else |
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echo "update-rc.d: $initd/$bn exists during rc.d purge (use -f to force)" >&2 |
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exit 1 |
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fi |
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fi |
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fi |
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|
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if [ $dostart -eq 1 ]; then |
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#RUNLEVEL=`sed 's/.*\[\(.*\)\]/\1/' < /proc/1/cmdline` |
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RUNLEVEL=`runlevel | cut -d" " -f2` |
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if [ "x$RUNLEVEL" = "x" ]; then |
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echo "Unable to determine current runlevel" >&2 |
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exit 1 |
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fi |
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fi |
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|
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case $1 in |
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remove) |
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checklinks "remove" |
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;; |
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|
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defaults) |
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if [ $# -gt 3 ]; then |
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echo "defaults takes only one or two arguments" >&2 |
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usage |
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exit 1 |
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fi |
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start=20 |
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stop=20 |
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if [ $# -gt 1 ]; then |
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start=$2 |
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stop=$2 |
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fi |
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if [ $# -gt 2 ]; then |
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stop=$3 |
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fi |
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start=`printf %02d $start` |
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stop=`printf %02d $stop` |
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stoplinks="0/$stop 1/$stop 6/$stop" |
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startlinks="2/$start 3/$start 4/$start 5/$start" |
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makelinks |
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;; |
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|
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start | stop) |
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while [ $# -gt 0 ]; do |
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if [ $1 = "start" ]; then |
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letter=S |
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elif [ $1 = "stop" ]; then |
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letter=K |
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else |
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echo "expected start or stop" >&2 |
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usage |
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exit 1 |
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fi |
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shift |
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NN=`printf %02d $(expr $1 + 0)` |
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shift |
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while [ "x$1" != "x." ]; do |
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if [ $# -eq 0 ]; then |
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echo "action with list of runlevels not terminated by \`.'" >&2 |
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exit 1 |
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fi |
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level=$1 |
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shift |
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case $letter in |
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S) startlinks="$startlinks $level/$NN" ;; |
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K) stoplinks="$stoplinks $level/$NN" ;; |
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esac |
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done |
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shift |
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done |
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makelinks |
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;; |
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|
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*) |
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usage |
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exit 1 |
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;; |
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esac |
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