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