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root |
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BEGIN { $| = 1; print "1..7\n"; } |
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use Socket; |
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use IO::FDPass; |
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print "ok 1\n"; |
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socketpair my $fh1, my $fh2, AF_UNIX, SOCK_STREAM, 0 |
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or die "socketpair: $!"; |
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socketpair my $fh3, my $fh4, AF_UNIX, SOCK_STREAM, 0 |
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or die "socketpair: $!"; |
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print "ok 2\n"; |
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my $pid = fork; |
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defined $pid |
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or die "fork: $!"; |
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unless ($pid) { |
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close $fh3; |
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my $fd = IO::FDPass::recv fileno $fh2; |
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print $fd > 0 ? "" : "not ", "ok 4 # $fd\n"; |
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open my $fh, "+<&=$fd" |
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or die "open(fd) failed: $!"; |
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sysread $fh, my $buf, 1 |
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or die "sysread(child) failed: $!"; |
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print $buf eq "4" ? "" : "not ", "ok 5 # $buf\n"; |
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syswrite $fh, "3", 1 |
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or die "syswrite(child) failed: $!"; |
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exit; |
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} |
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print "ok 3\n"; |
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IO::FDPass::send fileno $fh1, fileno $fh4 |
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or die "send failed: $!"; |
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close $fh4; |
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syswrite $fh3, "4", 1 |
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or die "syswrite(parent) failed: $!"; |
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sysread $fh3, my $buf, 1 |
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or die "sysread(parent) failed: $!"; |
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print $buf eq "3" ? "" : "not ", "ok 6 # $buf\n"; |
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print "ok 7\n"; |
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