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compiler_vm: add ulimits; fix print_last_statement()
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0626397dbf
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@ -350,7 +350,7 @@ sub dispatch_user_command($context, $command) {
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'dump' => \&cmd_print,
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# special PBot command
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'print_last_statement' => \&cmd_print,
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'print_last_statement' => \&cmd_print_last_statement,
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);
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$command = unescape($command);
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@ -423,6 +423,22 @@ sub cmd_print($context, $args) {
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}
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}
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sub cmd_print_last_statement($context, $args) {
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# invoke the last statement
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my $console = gdb_send_and_read_console($context, "print $args");
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# don't print last statement if there was program output
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return if -s OUTPUT_FILENAME;
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foreach my $output (@$console) {
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last if $output->{_type} eq RESULT;
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if ($output->{_text} =~ /^\$\d+\s*=\s*(.*)/) {
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print_gdb_output($context, "no output: $args = $1");
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}
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}
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}
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sub handle_program_exit($context, $data) {
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my $reason = $data->{reason};
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@ -625,7 +641,7 @@ sub run_program($context) {
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sub main {
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# first command-line argument can override file to debug
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my $prog = $ARGV[0] // './prog';
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my $prog = shift @ARGV // './prog';
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# start gdb and grab references to its input and output streams
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open2(my $out, my $in, "LIBC_FATAL_STDERR=1 MALLOC_CHECK_=1 gdb -i mi3 -q -nx $prog");
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@ -1,6 +1,6 @@
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cp guest/bin/* /usr/local/bin
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mkdir /usr/local/share/pbot-vm/ > /dev/null
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mkdir -p /usr/local/share/pbot-vm/
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cp -r guest/lib/Languages/ /usr/local/share/pbot-vm/
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cp guest/include/prelude.h /usr/include
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@ -9,8 +9,11 @@ cp guest/polkit/* /etc/polkit-1/rules.d/
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nmcli networking off
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echo unset DEBUGINFOD_URLS >> /root/.bashrc
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echo export ASAN_OPTIONS=detect_leaks=0 >> /root/.bashrc
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if ! grep -qF "pbot-vm" /root/.bashrc; then
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echo '# pbot-vm' >> /root/.bashrc
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echo unset DEBUGINFOD_URLS >> /root/.bashrc
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echo export ASAN_OPTIONS=detect_leaks=0 >> /root/.bashrc
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fi
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echo PBot Guest VM is now set up.
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echo
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@ -143,6 +143,8 @@ sub run_server {
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system("rm -rf /home/$USERNAME/prog*");
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system("pkill -u $USERNAME");
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system("date -s \@$compile_in->{date}");
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$ENV{USER} = $USERNAME;
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$ENV{LOGNAME} = $USERNAME;
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$ENV{HOME} = $home;
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@ -205,11 +207,11 @@ sub interpret {
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$mod->preprocess;
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print "after preprocess: ", Dumper $mod, "\n";
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# print "after preprocess: ", Dumper $mod, "\n";
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$mod->postprocess if not $mod->{error} and not $mod->{done};
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print "after postprocess: ", Dumper $mod, "\n";
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# print "after postprocess: ", Dumper $mod, "\n";
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if (exists $mod->{no_output} or not length $mod->{output}) {
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if ($h{factoid}) {
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@ -20,8 +20,6 @@ sub preprocess {
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print $fh "$input\n";
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close $fh;
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$self->execute(10, undef, 'date', '-s', "\@$self->{date}");
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my @cmd = $self->split_line($self->{cmdline}, strip_quotes => 1, preserve_escapes => 0);
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if ($self->{code} =~ m/print_last_statement\(.*\);$/m) {
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@ -78,15 +76,26 @@ sub postprocess {
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}
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print "Executing gdb\n";
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my @args = $self->split_line($self->{arguments}, strip_quotes => 1, preserve_escapes => 0);
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my ($exitval, $stdout, $stderr);
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my $ulimits = "ulimit -f 2000; ulimit -t 8; ulimit -u 200";
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my @args = $self->split_line($self->{arguments}, strip_quotes => 1, preserve_escapes => 0);
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my $quoted_args = '';
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foreach my $arg (@args) {
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$arg =~ s/'/'"'"'/g;
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$quoted_args .= "'$arg' ";
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}
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if ($self->{cmdline} =~ /-fsanitize=(?:[^ ]+,)?address/) {
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# leak sanitizer doesn't work under ptrace/gdb
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# ASAN_OPTIONS=strict_string_checks=1:detect_stack_use_after_return=1:check_initialization_order=1:strict_init_order=1
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($exitval, $stdout, $stderr) = $self->execute(60, undef, './prog', @args);
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($exitval, $stdout, $stderr) = $self->execute(60, "$ulimits; ./prog $quoted_args\n", '/bin/sh');
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} else {
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($exitval, $stdout, $stderr) = $self->execute(60, undef, 'guest-gdb', @args);
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my $input = "$ulimits; guest-gdb ./prog $quoted_args";
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($exitval, $stdout, $stderr) = $self->execute(60, $input, '/bin/sh');
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}
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my $result = $stderr;
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@ -8,9 +8,6 @@ package _default;
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use warnings;
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use strict;
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use feature "switch";
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no if $] >= 5.018, warnings => "experimental::smartmatch";
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use IPC::Run qw/run timeout/;
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use Data::Dumper;
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@ -45,13 +42,21 @@ sub preprocess {
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print $fh $self->{code} . "\n";
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close $fh;
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$self->execute(10, undef, 'date', '-s', "\@$self->{date}");
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print "Executing [$self->{cmdline}] with args [$self->{arguments}]\n";
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my @cmdline = $self->split_line($self->{cmdline}, strip_quotes => 1, preserve_escapes => 0);
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push @cmdline, $self->split_line($self->{arguments}, strip_quotes => 1, preserve_escapes => 0);
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my ($retval, $stdout, $stderr) = $self->execute(60, $self->{input}, @cmdline);
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my @args = $self->split_line($self->{arguments}, strip_quotes => 1, preserve_escapes => 0);
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my $quoted_args = '';
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foreach my $arg (@args) {
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$arg =~ s/'/'"'"'/g;
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$quoted_args .= "'$arg' ";
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}
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$self->{input} = "ulimit -f 2000; ulimit -t 8; ulimit -u 200; $self->{cmdline} $quoted_args";
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my ($retval, $stdout, $stderr) = $self->execute(60, $self->{input}, '/bin/sh');
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$self->{output} = $stderr;
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$self->{output} .= ' ' if length $self->{output};
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$self->{output} .= $stdout;
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