44 lines
1,004 B
Nix
44 lines
1,004 B
Nix
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# Useful tool to check syntax of a config file. Upstart needs a dbus
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# session, so this script wraps one up and makes the operation not
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# require any prior state.
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#
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# See: http://mwhiteley.com/scripts/2012/12/11/dbus-init-checkconf.html
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{stdenv, coreutils, upstart, writeScript, dbus}:
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writeScript "upstart-check-config" ''
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#!${stdenv.shell}
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set -o errexit
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set -o nounset
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export PATH=${stdenv.lib.makeBinPath [dbus.out upstart coreutils]}:$PATH
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if [[ $# -ne 1 ]]
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then
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echo "Usage: $0 upstart-conf-file" >&2
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exit 1
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fi
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config=$1 && shift
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dbus_pid_file=$(mktemp)
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exec 4<> $dbus_pid_file
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dbus_add_file=$(mktemp)
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exec 6<> $dbus_add_file
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dbus-daemon --fork --print-pid 4 --print-address 6 --session
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function clean {
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dbus_pid=$(cat $dbus_pid_file)
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if [[ -n $dbus_pid ]]; then
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kill $dbus_pid
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fi
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rm -f $dbus_pid_file $dbus_add_file
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}
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trap "{ clean; }" EXIT
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export DBUS_SESSION_BUS_ADDRESS=$(cat $dbus_add_file)
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init-checkconf $config
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''
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