117 lines
1.8 KiB
Bash
117 lines
1.8 KiB
Bash
#! @bash@/bin/sh -e
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## Generic service scripts for NixOS, which provide
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## * functions to write state to files (/var/run/nix-services)
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## * functions to read state from file (/var/run/nix-services)
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## * sanity checking functions
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STATEDIR=/var/run/nix-services
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RCDIR=/etc/rc.d/
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NIXPKGS=@nixpkgs@
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## resolve $deps to real start/stop scripts first
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start_deps() {
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for i in $deps; do
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echo $i
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name=`$i/control name`
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if ! test -a "$RCDIR/$name"; then
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echo $RCDIR/$name $i
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@nix@/bin/nix-env -p $RCDIR/$name -i $i
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fi
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$i/control start
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RETVAL=$?
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if test $RETVAL != 0; then
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exit $RETVAL
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fi
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done
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}
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start_softdeps() {
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for i in $softdeps; do
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echo $i
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name=`$i/control name`
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if ! test -a "$RCDIR/$name"; then
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echo $RCDIR/$name $i
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@nix@/bin/nix-env -p $RCDIR/$name -i $i
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fi
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$i/control start
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RETVAL=$?
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if test $RETVAL != 0; then
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continue
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fi
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done
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}
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start() {
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# are we already running?
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# if so, exit with code 0
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if test -a $STATEDIR/$prog; then
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exit 0
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fi
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# if not, continue
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# launch all hard dependencies
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start_deps
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RETVAL=$?
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if test $RETVAL != 0; then
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echo $prog failed
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exit $RETVAL
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fi
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# launch all preferred dependencies
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echo "softdeps" $softdeps
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start_softdeps
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# launch our own program
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startService
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# if successful, then register
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RETVAL=$?
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if test $RETVAL != 0; then
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echo $prog failed
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exit $RETVAL
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fi
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register
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}
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stop() {
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echo "stopping $prog"
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# are we running? If so, then stop, otherwise, do nothing...
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if ! test -a $STATEDIR/$prog; then
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exit 0
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fi
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# stop our own program
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stopService
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echo "unregistering"
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unregister
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}
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register() {
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touch $STATEDIR/$prog
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}
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unregister() {
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rm $STATEDIR/$prog
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}
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status() {
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# are we running? If so, report
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if test -a $STATEDIR/$prog; then
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echo "running"
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else
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echo "stopped"
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fi
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}
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name() {
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echo $prog
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}
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