120 lines
3.4 KiB
Bash
Executable file
120 lines
3.4 KiB
Bash
Executable file
#!/bin/sh
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#
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# 2008 Nico Schottelius (nico-cinit-conf at schottelius.org)
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#
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# This file is part of cinit-conf.
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#
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# cinit-conf 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 3 of the License, or
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# (at your option) any later version.
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#
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# cinit-conf 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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# You should have received a copy of the GNU General Public License
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# along with cinit-conf. If not, see <http://www.gnu.org/licenses/>.
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#
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# cinit: create dependency: service a needs or wants service b
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#
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set -x
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# initialise cinit-conf framework
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hier="${0%/*}"; set -e; . "${hier}/cinit-conf.read-conf"
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if [ $# -ne 3 ]; then
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echo "`basename $0`: service_A [wants|needs] service_B"
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echo ""
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echo " Service A needs or wants Service B."
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echo " You must specify whether to use wants or needs."
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echo ""
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exit 23
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fi
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SVC_A="$1"
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DEP="$2"
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SVC_B="$3"
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# adding 'wishes' for x-mas and requires for 'the mass' and 'tv'
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case "${DEP}" in
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wishes|wants) DEP="$C_WANTS" ;;
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needs|requires) DEP="$C_NEEDS" ;;
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*) echo "Use \"want\" or \"need\" as type of dependency."
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esac
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# First of all create absolute paths
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# if SVC_X beginning matches R_CINIT_DIR it is absolute
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# else it is relative to R_CINIT_DIR
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echo "${SVC_A}" | grep "^${R_SVC_DIR}" >/dev/null || SVC_A="${R_SVC_DIR}/${SVC_A}"
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echo "${SVC_B}" | grep "^${R_SVC_DIR}" >/dev/null || SVC_B="${R_SVC_DIR}/${SVC_B}"
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SVC_A_ABS=$(cd "${SVC_A}" && pwd -P)
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SVC_B_ABS=$(cd "${SVC_B}" && pwd -P)
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SVC_A_REL="${SVC_A_ABS##*/}"
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SVC_B_REL="${SVC_B_ABS##*/}"
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set +e
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match=""
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count="0"
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svc_stripped="$(echo $SVC_A_ABS | sed -e 's;/$;;' -e 's;/[^/]*$;;')"
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while [ "$svc_stripped" ]; do
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match="$(echo ${SVC_B_ABS} | grep "^${svc_stripped}")"
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count=$(($count+1))
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if [ "$match" ]; then
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relpath=""
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while [ "$count" -gt 0 ]; do
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source="../${source}"
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count=$(($count-1))
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done
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source="${source}${SVC_B_REL}"
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break
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fi
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svc_stripped="$(echo $svc_stripped | sed -e 's;/$;;' -e 's;/[^/]*$;;')"
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done
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# nothing in common? link absolute
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if [ ! "$match" ]; then
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source="${SVC_B_ABS}"
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fi
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# Then find out the level of subdirs, excluding destdir!
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# FIXME: could someone PLEASE simplify that?
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#SLASHES=$(echo $SVC_A | sed -e 's,/$,,' -e 's,[^/],,g' -e 's,/,../,g' -e 's,^,../../,')
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# find common anchor and link after that:
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# /destdir/etc/cinit/svc/svca/b/
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# /destdir/etc/cinit/svc/svca/c/
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# results in ../c/
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# Thus:
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# while unmatched
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# remove /* (one level, shortest match)
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#
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# 1. remove destdir, if present 2. remove everything but the slashes 3. replace them with ../
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#
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SLASHES=$(echo $SVC_A | sed -e "s;^$DESTDIR;;" -e 's,/$,,' -e 's,[^/],,g' -e 's,/,../,g' -e 's,^,../../,')
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DEST_NAME=$(echo $SVC_A | sed -e 's,/$,,' -e 's,/,-,g')
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SOURCE="${SLASHES}${SVC_B}"
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DEP_DIR="${SVC_A}/${DEP}"
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if [ ! -d "$DEP_DIR" ]; then
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echo "$DEP_DIR does not exist, creating..."
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mkdir "$DEP_DIR"
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if [ $? -ne 0 ]; then
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echo "Error occured due to creating directory. Exiting."
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exit 1
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fi
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fi
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DEST="${DEP_DIR}/${DEST_NAME}"
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echo -n "Linking ${source} to ${DEST} ... "
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ln -sf "${source}" "${DEST}"
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echo "finished."
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