8 # Run @$argv in the background with stdio redirected to $in, $out and $err.
10 my ($argv, $in, $out, $err) = @_;
12 if (not defined $pid) {
15 open STDIN, "<&", $in;
16 open STDOUT, ">&", $out;
17 open STDERR, ">&", $err;
20 exec(@$argv) or die "cannot exec '$argv->[0]': $!"
25 # Wait for $pid to finish.
27 # Simplified from wait_or_whine() in run-command.c.
30 my $waiting = waitpid($pid, 0);
32 die "waitpid failed: $!";
35 warn "died of signal $code";
45 # Note: the real sendfile() cannot read from a terminal.
47 # It is unspecified by POSIX whether reads
48 # from a disconnected terminal will return
49 # EIO (as in AIX 4.x, IRIX, and Linux) or
50 # end-of-file. Either is fine.
51 copy($in, $out, 4096) or $!{EIO} or die "cannot copy from child: $!";
58 xsendfile($in, \*STDIN);
68 defined $pid or die "fork failed: $!";
71 xsendfile(\*STDERR, $err);
75 xsendfile(\*STDOUT, $out);
76 finish_child($pid) == 0
81 die "usage: test-terminal program args";
84 my $parent_in = new IO::Pty;
85 my $parent_out = new IO::Pty;
86 my $parent_err = new IO::Pty;
87 $parent_in->set_raw();
88 $parent_out->set_raw();
89 $parent_err->set_raw();
90 $parent_in->slave->set_raw();
91 $parent_out->slave->set_raw();
92 $parent_err->slave->set_raw();
93 my $pid = start_child(\@ARGV, $parent_in->slave, $parent_out->slave, $parent_err->slave);
94 close $parent_in->slave;
95 close $parent_out->slave;
96 close $parent_err->slave;
97 my $in_pid = copy_stdin($parent_in);
98 copy_stdio($parent_out, $parent_err);
99 my $ret = finish_child($pid);
100 # If the child process terminates before our copy_stdin() process is able to
101 # write all of its data to $parent_in, the copy_stdin() process could stall.
102 # Send SIGTERM to it to ensure it terminates.
103 kill 'TERM', $in_pid;
104 finish_child($in_pid);