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#!perl -w
# Copyright (C) all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
use strict;
use v5.10.1;
use Test::More;
use PublicInbox::TestCommon;
use Socket qw(AF_UNIX SOCK_STREAM MSG_EOR);
pipe(my ($r, $w)) or BAIL_OUT;
my ($send, $recv);
require_ok 'PublicInbox::Spawn';
my $SOCK_SEQPACKET = eval { Socket::SOCK_SEQPACKET() } // undef;
use Time::HiRes qw(usleep);
my $do_test = sub { SKIP: {
my ($type, $flag, $desc) = @_;
defined $type or skip 'SOCK_SEQPACKET missing', 7;
my ($s1, $s2);
my $src = 'some payload' x 40;
socketpair($s1, $s2, AF_UNIX, $type, 0) or BAIL_OUT $!;
my $sfds = [ fileno($r), fileno($w), fileno($s1) ];
$send->($s1, $sfds, $src, $flag);
my (@fds) = $recv->($s2, my $buf, length($src) + 1);
is($buf, $src, 'got buffer payload '.$desc);
my ($r1, $w1, $s1a);
my $opens = sub {
ok(open($r1, '<&=', $fds[0]), 'opened received $r');
ok(open($w1, '>&=', $fds[1]), 'opened received $w');
ok(open($s1a, '+>&=', $fds[2]), 'opened received $s1');
};
$opens->();
my @exp = stat $r;
my @cur = stat $r1;
is("$exp[0]\0$exp[1]", "$cur[0]\0$cur[1]", '$r dev/ino matches');
@exp = stat $w;
@cur = stat $w1;
is("$exp[0]\0$exp[1]", "$cur[0]\0$cur[1]", '$w dev/ino matches');
@exp = stat $s1;
@cur = stat $s1a;
is("$exp[0]\0$exp[1]", "$cur[0]\0$cur[1]", '$s1 dev/ino matches');
if (defined($SOCK_SEQPACKET) && $type == $SOCK_SEQPACKET) {
$r1 = $w1 = $s1a = undef;
$src = (',' x 1023) . '-' .('.' x 1024);
$send->($s1, $sfds, $src, $flag);
(@fds) = $recv->($s2, $buf, 1024);
is($buf, (',' x 1023) . '-', 'silently truncated buf');
$opens->();
$r1 = $w1 = $s1a = undef;
$s2->blocking(0);
@fds = $recv->($s2, $buf, length($src) + 1);
ok($!{EAGAIN}, "EAGAIN set by ($desc)");
is_deeply(\@fds, [ undef ], "EAGAIN $desc");
$s2->blocking(1);
if ($ENV{TEST_ALRM}) {
my $alrm = 0;
local $SIG{ALRM} = sub { $alrm++ };
my $tgt = $$;
my $pid = fork // xbail "fork: $!";
if ($pid == 0) {
# need to loop since Perl signals are racy
# (the interpreter doesn't self-pipe)
while (usleep(1000)) {
kill 'ALRM', $tgt;
}
}
@fds = $recv->($s2, $buf, length($src) + 1);
ok($!{EINTR}, "EINTR set by ($desc)");
kill('KILL', $pid);
waitpid($pid, 0);
is_deeply(\@fds, [ undef ], "EINTR $desc");
ok($alrm, 'SIGALRM hit');
}
close $s1;
@fds = $recv->($s2, $buf, length($src) + 1);
is_deeply(\@fds, [], "no FDs on EOF $desc");
is($buf, '', "buffer cleared on EOF ($desc)");
socketpair($s1, $s2, AF_UNIX, $type, 0) or BAIL_OUT $!;
$s1->blocking(0);
my $nsent = 0;
while (defined(my $n = $send->($s1, $sfds, $src, $flag))) {
$nsent += $n;
fail "sent 0 bytes" if $n == 0;
}
ok($!{EAGAIN} || $!{ETOOMANYREFS},
"hit EAGAIN || ETOOMANYREFS on send $desc") or
diag "send failed with: $!";
ok($nsent > 0, 'sent some bytes');
socketpair($s1, $s2, AF_UNIX, $type, 0) or BAIL_OUT $!;
is($send->($s1, [], $src, $flag), length($src), 'sent w/o FDs');
$buf = 'nope';
@fds = $recv->($s2, $buf, length($src));
is(scalar(@fds), 0, 'no FDs received');
is($buf, $src, 'recv w/o FDs');
my $nr = 2 * 1024 * 1024;
while (1) {
vec(my $vec = '', $nr * 8 - 1, 1) = 1;
my $n = $send->($s1, [], $vec, $flag);
if (defined($n)) {
$n == length($vec) or
fail "short send: $n != ".length($vec);
diag "sent $nr, retrying with more";
$nr += 2 * 1024 * 1024;
} else {
ok($!{EMSGSIZE} || $!{ENOBUFS},
'got EMSGSIZE or ENOBUFS') or
diag "$nr bytes fails with: $!";
last;
}
}
}
} };
my $send_ic = PublicInbox::Spawn->can('send_cmd4');
my $recv_ic = PublicInbox::Spawn->can('recv_cmd4');
SKIP: {
($send_ic && $recv_ic) or skip 'Inline::C not installed/enabled', 12;
$send = $send_ic;
$recv = $recv_ic;
$do_test->(SOCK_STREAM, 0, 'Inline::C stream');
$do_test->($SOCK_SEQPACKET, MSG_EOR, 'Inline::C seqpacket');
}
SKIP: {
require_mods('Socket::MsgHdr', 13);
require_ok 'PublicInbox::CmdIPC4';
$send = PublicInbox::CmdIPC4->can('send_cmd4');
$recv = PublicInbox::CmdIPC4->can('recv_cmd4');
$do_test->(SOCK_STREAM, 0, 'MsgHdr stream');
$do_test->($SOCK_SEQPACKET, MSG_EOR, 'MsgHdr seqpacket');
SKIP: {
($send_ic && $recv_ic) or
skip 'Inline::C not installed/enabled', 12;
$recv = $recv_ic;
$do_test->(SOCK_STREAM, 0, 'Inline::C -> MsgHdr stream');
$do_test->($SOCK_SEQPACKET, 0, 'Inline::C -> MsgHdr seqpacket');
}
}
SKIP: {
skip 'not Linux', 1 if $^O ne 'linux';
require_ok 'PublicInbox::Syscall';
$send = PublicInbox::Syscall->can('send_cmd4') or
skip 'send_cmd4 not defined for arch';
$recv = PublicInbox::Syscall->can('recv_cmd4') or
skip 'recv_cmd4 not defined for arch';
$do_test->(SOCK_STREAM, 0, 'PP Linux stream');
$do_test->($SOCK_SEQPACKET, MSG_EOR, 'PP Linux seqpacket');
}
done_testing;
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