82 lines
2.0 KiB
Perl
82 lines
2.0 KiB
Perl
#!perl
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# vim:ts=4:sw=4:expandtab
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#
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# Please read the following documents before working on tests:
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# • https://build.i3wm.org/docs/testsuite.html
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# (or docs/testsuite)
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#
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# • https://build.i3wm.org/docs/lib-i3test.html
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# (alternatively: perldoc ./testcases/lib/i3test.pm)
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#
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# • https://build.i3wm.org/docs/ipc.html
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# (or docs/ipc)
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#
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# • http://onyxneon.com/books/modern_perl/modern_perl_a4.pdf
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# (unless you are already familiar with Perl)
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#
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# Verifies that i3 does not leak any file descriptors in 'exec'.
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#
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use i3test;
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use POSIX qw(mkfifo);
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use File::Temp qw(:POSIX tempfile);
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SKIP: {
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skip "Procfs not available on $^O", 1 if $^O eq 'openbsd';
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my $i3 = i3(get_socket_path());
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my $tmp = tmpnam();
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mkfifo($tmp, 0600) or die "Could not create FIFO in $tmp";
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my ($outfh, $outname) = tempfile('/tmp/i3-ls-output.XXXXXX', UNLINK => 1);
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# Get fds from a clean shell
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my $shoutput = `sh -c "ls -l /proc/self/fd"`;
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# Get fds from i3
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cmd qq|exec ls -l /proc/self/fd >$outname && echo done >$tmp|;
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open(my $fh, '<', $tmp);
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# Block on the FIFO, this will return exactly when the command is done.
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<$fh>;
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close($fh);
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unlink($tmp);
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# Get the ls /proc/self/fd output
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my $i3output;
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{
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local $/;
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$i3output = <$outfh>;
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}
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close($outfh);
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sub extract_fds {
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my $output = @_;
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# Split lines, keep only those which are symlinks.
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my @lines = grep { /->/ } split("\n", $output);
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my %fds = map { /([0-9]+) -> (.+)$/; ($1, $2) } @lines;
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# Filter out 0, 1, 2 (stdin, stdout, stderr).
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delete $fds{0};
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delete $fds{1};
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delete $fds{2};
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# filter out the fd which is caused by ls calling readdir().
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for my $fd (keys %fds) {
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delete $fds{$fd} if $fds{$fd} =~ m,^/proc/\d+/fd$,;
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}
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return %fds;
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}
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my %i3fds = extract_fds($i3output);
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my %shfds = extract_fds($shoutput);
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# Diff the fds to account for services that keep fds open, such as the System Security Services Daemon (sssd)
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is(scalar keys %i3fds, scalar keys %shfds, 'No file descriptors leaked');
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}
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done_testing;
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