| #!/usr/bin/perl |
| use 5.008001; |
| use strict; |
| use warnings; |
| use IO::Pty; |
| use File::Copy; |
| |
| # Run @$argv in the background with stdio redirected to $out and $err. |
| sub start_child { |
| my ($argv, $out, $err) = @_; |
| my $pid = fork; |
| if (not defined $pid) { |
| die "fork failed: $!" |
| } elsif ($pid == 0) { |
| open STDOUT, ">&", $out; |
| open STDERR, ">&", $err; |
| close $out; |
| exec(@$argv) or die "cannot exec '$argv->[0]': $!" |
| } |
| return $pid; |
| } |
| |
| # Wait for $pid to finish. |
| sub finish_child { |
| # Simplified from wait_or_whine() in run-command.c. |
| my ($pid) = @_; |
| |
| my $waiting = waitpid($pid, 0); |
| if ($waiting < 0) { |
| die "waitpid failed: $!"; |
| } elsif ($? & 127) { |
| my $code = $? & 127; |
| warn "died of signal $code"; |
| return $code + 128; |
| } else { |
| return $? >> 8; |
| } |
| } |
| |
| sub xsendfile { |
| my ($out, $in) = @_; |
| |
| # Note: the real sendfile() cannot read from a terminal. |
| |
| # It is unspecified by POSIX whether reads |
| # from a disconnected terminal will return |
| # EIO (as in AIX 4.x, IRIX, and Linux) or |
| # end-of-file. Either is fine. |
| copy($in, $out, 4096) or $!{EIO} or die "cannot copy from child: $!"; |
| } |
| |
| sub copy_stdio { |
| my ($out, $err) = @_; |
| my $pid = fork; |
| defined $pid or die "fork failed: $!"; |
| if (!$pid) { |
| close($out); |
| xsendfile(\*STDERR, $err); |
| exit 0; |
| } |
| close($err); |
| xsendfile(\*STDOUT, $out); |
| finish_child($pid) == 0 |
| or exit 1; |
| } |
| |
| if ($#ARGV < 1) { |
| die "usage: test-terminal program args"; |
| } |
| $ENV{TERM} = 'vt100'; |
| my $parent_out = new IO::Pty; |
| my $parent_err = new IO::Pty; |
| $parent_out->set_raw(); |
| $parent_err->set_raw(); |
| $parent_out->slave->set_raw(); |
| $parent_err->slave->set_raw(); |
| my $pid = start_child(\@ARGV, $parent_out->slave, $parent_err->slave); |
| close $parent_out->slave; |
| close $parent_err->slave; |
| copy_stdio($parent_out, $parent_err); |
| my $ret = finish_child($pid); |
| exit($ret); |