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Add a syscall test exercising dualstack address family mismatches

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Verify that the connect call returns the proper errno when asked to
connect to a remote IP in a different address family than the local IP.

PiperOrigin-RevId: 581919473
This commit is contained in:
Jeff Martin
2023-11-13 04:51:33 -08:00
committed by gVisor bot
parent c46ffacf2f
commit 8c52800156
1 changed files with 37 additions and 0 deletions
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test/syscalls/linux/socket_inet_loopback.cc
+37
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@@ -20,6 +20,7 @@
#include <sys/socket.h>
#include <atomic>
#include <cerrno>
#include <iostream>
#include <memory>
#include <string>
@@ -218,6 +219,42 @@ INSTANTIATE_TEST_SUITE_P(
return s;
});
using DualStackAfMismatchTest = ::testing::TestWithParam<ProtocolTestParam>;
TEST_P(DualStackAfMismatchTest, V6ListenerV4Connect) {
ProtocolTestParam const& param = GetParam();
const FileDescriptor socket_fd =
ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET6, param.type, 0));
const TestAddress& v6_addr = V6Loopback();
const TestAddress& v4_addr = V4MappedLoopback();
ASSERT_THAT(
bind(socket_fd.get(), AsSockAddr(&v6_addr.addr), v6_addr.addr_len),
SyscallSucceeds());
ASSERT_THAT(
connect(socket_fd.get(), AsSockAddr(&v4_addr.addr), v4_addr.addr_len),
SyscallFailsWithErrno(ENETUNREACH));
}
TEST_P(DualStackAfMismatchTest, V4ListenerV6Connect) {
// Gvisor does not return the correct Errno.
SKIP_IF(IsRunningOnGvisor());
const FileDescriptor socket_fd =
ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP));
const TestAddress& v6_addr = V6Loopback();
const TestAddress& v4_addr = V4MappedLoopback();
ASSERT_THAT(
bind(socket_fd.get(), AsSockAddr(&v4_addr.addr), v4_addr.addr_len),
SyscallSucceeds());
ASSERT_THAT(
connect(socket_fd.get(), AsSockAddr(&v6_addr.addr), v6_addr.addr_len),
SyscallFailsWithErrno(EAFNOSUPPORT));
}
INSTANTIATE_TEST_SUITE_P(All, DualStackAfMismatchTest, ProtocolTestValues(),
DescribeProtocolTestParam);
void tcpSimpleConnectTest(TestAddress const& listener,
TestAddress const& connector, bool unbound) {
// Create the listening socket.