128 lines
3.5 KiB
Nix
128 lines
3.5 KiB
Nix
{ lib, pkgs, ... }:
|
|
|
|
with lib;
|
|
|
|
let
|
|
|
|
makeScript = name: service: pkgs.writeScript "${name}-runner"
|
|
''
|
|
#! ${pkgs.perl}/bin/perl -w -I${pkgs.perlPackages.FileSlurp}/${pkgs.perl.libPrefix}
|
|
|
|
use File::Slurp;
|
|
|
|
sub run {
|
|
my ($cmd) = @_;
|
|
my @args = ();
|
|
while ($cmd =~ /([^ \t\n']+)|(\'([^'])\')\s*/g) {
|
|
push @args, $1;
|
|
}
|
|
my $prog;
|
|
if (substr($args[0], 0, 1) eq "@") {
|
|
$prog = substr($args[0], 1);
|
|
shift @args;
|
|
} else {
|
|
$prog = $args[0];
|
|
}
|
|
my $pid = fork;
|
|
if ($pid == 0) {
|
|
setpgrp; # don't receive SIGINT etc. from terminal
|
|
exec { $prog } @args;
|
|
die "failed to exec $prog\n";
|
|
} elsif (!defined $pid) {
|
|
die "failed to fork: $!\n";
|
|
}
|
|
return $pid;
|
|
};
|
|
|
|
sub run_wait {
|
|
my ($cmd) = @_;
|
|
my $pid = run $cmd;
|
|
die if waitpid($pid, 0) != $pid;
|
|
return $?;
|
|
};
|
|
|
|
# Set the environment. FIXME: escaping.
|
|
foreach my $key (keys %ENV) {
|
|
next if $key eq 'LOCALE_ARCHIVE';
|
|
delete $ENV{$key};
|
|
}
|
|
${concatStrings (mapAttrsToList (n: v: ''
|
|
$ENV{'${n}'} = '${v}';
|
|
'') service.environment)}
|
|
|
|
# Run the ExecStartPre program. FIXME: this could be a list.
|
|
my $preStart = <<END_CMD;
|
|
${service.serviceConfig.ExecStartPre or ""}
|
|
END_CMD
|
|
if (defined $preStart && $preStart ne "\n") {
|
|
print STDERR "running ExecStartPre: $preStart\n";
|
|
my $res = run_wait $preStart;
|
|
die "$0: ExecStartPre failed with status $res\n" if $res;
|
|
};
|
|
|
|
# Run the ExecStart program.
|
|
my $cmd = <<END_CMD;
|
|
${service.serviceConfig.ExecStart}
|
|
END_CMD
|
|
|
|
print STDERR "running ExecStart: $cmd\n";
|
|
my $mainPid = run $cmd;
|
|
$ENV{'MAINPID'} = $mainPid;
|
|
|
|
# Catch SIGINT, propagate to the main program.
|
|
sub intHandler {
|
|
print STDERR "got SIGINT, stopping service...\n";
|
|
kill 'INT', $mainPid;
|
|
};
|
|
$SIG{'INT'} = \&intHandler;
|
|
$SIG{'QUIT'} = \&intHandler;
|
|
|
|
# Run the ExecStartPost program.
|
|
my $postStart = <<END_CMD;
|
|
${service.serviceConfig.ExecStartPost or ""}
|
|
END_CMD
|
|
if (defined $postStart && $postStart ne "\n") {
|
|
print STDERR "running ExecStartPost: $postStart\n";
|
|
my $res = run_wait $postStart;
|
|
die "$0: ExecStartPost failed with status $res\n" if $res;
|
|
}
|
|
|
|
# Wait for the main program to exit.
|
|
die if waitpid($mainPid, 0) != $mainPid;
|
|
my $mainRes = $?;
|
|
|
|
# Run the ExecStopPost program.
|
|
my $postStop = <<END_CMD;
|
|
${service.serviceConfig.ExecStopPost or ""}
|
|
END_CMD
|
|
if (defined $postStop && $postStop ne "\n") {
|
|
print STDERR "running ExecStopPost: $postStop\n";
|
|
my $res = run_wait $postStop;
|
|
die "$0: ExecStopPost failed with status $res\n" if $res;
|
|
}
|
|
|
|
exit($mainRes & 127 ? 255 : $mainRes << 8);
|
|
'';
|
|
|
|
opts = { config, name, ... }: {
|
|
options.runner = mkOption {
|
|
internal = true;
|
|
description = ''
|
|
A script that runs the service outside of systemd,
|
|
useful for testing or for using NixOS services outside
|
|
of NixOS.
|
|
'';
|
|
};
|
|
config.runner = makeScript name config;
|
|
};
|
|
|
|
in
|
|
|
|
{
|
|
options = {
|
|
systemd.services = mkOption {
|
|
type = with types; attrsOf (submodule opts);
|
|
};
|
|
};
|
|
}
|