X-Git-Url: http://git.ieval.ro/?p=gruntmaster-daemon.git;a=blobdiff_plain;f=gruntmaster-exec;h=d2807656d506909f27e14d68897b2317f20c4f53;hp=0a2c50c204c12477cd93d574353fe3a7bdeb80bd;hb=614700357f0af54cdba3ac21b7420738bda2f3fe;hpb=42ce8ba99a9d50c8bb440451f45098a98769216a

diff --git a/gruntmaster-exec b/gruntmaster-exec
index 0a2c50c..d280765 100755
--- a/gruntmaster-exec
+++ b/gruntmaster-exec
@@ -28,18 +28,36 @@ use POSIX qw//;
 use Text::ParseWords qw/shellwords/;
 use Time::HiRes qw/alarm/;
 
-my (@fds, $timeout, $mlimit, $olimit, $sudo);
-my $close = 1;
+my (@fds, $timeout, $mlimit, $olimit, $sudo, $keep_stderr);
 
 GetOptions(
-	"fd=s"      => \@fds,
-	"timeout=f" => \$timeout,
-	"mlimit=i"  => \$mlimit,
-	"olimit=i"  => \$olimit,
-	"close!"    => \$close,
-	"sudo!"   => \$sudo,
+	"fd=s"         => \@fds,
+	"timeout=f"    => \$timeout,
+	"mlimit=i"     => \$mlimit,
+	"olimit=i"     => \$olimit,
+	"keep-stderr!" => \$keep_stderr,
+	"sudo!"        => \$sudo,
 );
 
+sub test_pipe_read {
+	my $data = '';
+	sysread STDIN, $data, 4096 and syswrite STDOUT, "recvd\n" until $data =~ /done/;
+	syswrite STDOUT, 'done';
+}
+
+sub test_pipe_write {
+	my ($rin, $rout);
+	vec($rin, fileno STDIN, 1) = 1;
+	syswrite STDOUT, "data\n" until select $rout = $rin, undef, undef, 0.05;
+	syswrite STDOUT, 'done';
+	my $data = '';
+	sysread STDIN, $data, 4096 until $data =~ /done/;
+}
+
+sub test_pipes {
+	$ARGV[0] =~ /prog/ ? test_pipe_read : test_pipe_write
+}
+
 my $killuser = $ENV{GRUNTMASTER_KILL_USER};
 my @sudo;
 @sudo = (shellwords ($ENV{GRUNTMASTER_SUDO}), '--') if $ENV{GRUNTMASTER_SUDO} && $sudo;
@@ -47,7 +65,13 @@ undef $mlimit if @sudo; # sudo wants a lot of address space
 
 my $ret = fork // die 'Cannot fork';
 if ($ret) {
-	my $tle;
+	my ($tle, $child_ready);
+	local $SIG{USR1} = sub { $child_ready = 1 };
+	sleep 3; # Wait for ready signal (SIGUSR1)
+	unless ($child_ready) {
+		kill KILL => $ret;
+		exit !say ERR, "\nNo response from gruntmaster-exec child";
+	}
 	local $SIG{ALRM} = sub {
 		if ($killuser) {
 			system @sudo, 'pkill', '-KILL', '-u', $killuser;
@@ -67,14 +91,13 @@ if ($ret) {
 	my $signame = sig_name $sig;
 	exit !say TLE,  "\nTime Limit Exceeded"   if $tle;
 	exit !say OLE,  "\nOutput Limit Exceeded" if $sig && $signame eq 'XFSZ';
-	exit !say DIED, "\nCrash (SIG$signame)"   if $sig && $signame ne 'PIPE';
+	exit !say DIED, "\nCrash (SIG$signame)"   if $sig && ($signame ne 'PIPE' || $ARGV[0] !~ /prog/);
 	exit !say NZX,  "\nNon-zero exit status: " . ($? >> 8) if $? >> 8;
 	exit !say AC,   "\nAll OK";
 } else {
 	$^F = 50;
-	if ($close) {
-		POSIX::close $_ for 0 .. $^F;
-	}
+	POSIX::close 2 unless $keep_stderr;
+	POSIX::close $_ for 0, 1, 3 .. $^F;
 	for my $fdstring (@fds) {
 		my ($fd, $file) = split ' ', $fdstring, 2;
 		open my $fh, $file or die $!;
@@ -84,13 +107,18 @@ if ($ret) {
 			POSIX::close $oldfd or die $!;
 		}
 	}
+	test_pipes if grep /tty|fifo/, @fds;
 	my $nproc = $killuser ? 15 : 1;
 	my $debug = $ENV{TEST_VERBOSE};
 	%ENV = (ONLINE_JUDGE => 1, PATH => $ENV{PATH}, HOME => $ENV{HOME});
 	setrlimit RLIMIT_AS, $mlimit, $mlimit or die $! if $mlimit;
 	setrlimit RLIMIT_FSIZE, $olimit, $olimit or die $! if $olimit;
 	setrlimit RLIMIT_NPROC, $nproc, $nproc or die $! if $sudo;
+	open my $adj, '>', '/proc/self/oom_score_adj';
+	print $adj 900;
+	close $adj;
 	unshift @ARGV, @sudo;
+	kill USR1 => getppid; # Tell parent process that we're ready
 	say STDERR "Executing: ", join ' ', map { "'$_'" } @ARGV if $debug;
 	exec @ARGV;
 }