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-rw-r--r--test/syscalls/linux/socket_ip_unbound.cc228
1 files changed, 228 insertions, 0 deletions
diff --git a/test/syscalls/linux/socket_ip_unbound.cc b/test/syscalls/linux/socket_ip_unbound.cc
index ffd9cde77..fa9a9df6f 100644
--- a/test/syscalls/linux/socket_ip_unbound.cc
+++ b/test/syscalls/linux/socket_ip_unbound.cc
@@ -127,6 +127,234 @@ TEST_P(IPUnboundSocketTest, InvalidNegativeTtl) {
SyscallFailsWithErrno(EINVAL));
}
+struct TOSOption {
+ int level;
+ int option;
+};
+
+constexpr int INET_ECN_MASK = 3;
+
+static TOSOption GetTOSOption(int domain) {
+ TOSOption opt;
+ switch (domain) {
+ case AF_INET:
+ opt.level = IPPROTO_IP;
+ opt.option = IP_TOS;
+ break;
+ case AF_INET6:
+ opt.level = IPPROTO_IPV6;
+ opt.option = IPV6_TCLASS;
+ break;
+ }
+ return opt;
+}
+
+TEST_P(IPUnboundSocketTest, TOSDefault) {
+ auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket());
+ TOSOption t = GetTOSOption(GetParam().domain);
+ int get = -1;
+ socklen_t get_sz = sizeof(get);
+ constexpr int kDefaultTOS = 0;
+ EXPECT_THAT(getsockopt(socket->get(), t.level, t.option, &get, &get_sz),
+ SyscallSucceedsWithValue(0));
+ EXPECT_EQ(get_sz, sizeof(get));
+ EXPECT_EQ(get, kDefaultTOS);
+}
+
+TEST_P(IPUnboundSocketTest, SetTOS) {
+ auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket());
+ int set = 0xC0;
+ socklen_t set_sz = sizeof(set);
+ TOSOption t = GetTOSOption(GetParam().domain);
+ EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, &set, set_sz),
+ SyscallSucceedsWithValue(0));
+
+ int get = -1;
+ socklen_t get_sz = sizeof(get);
+ EXPECT_THAT(getsockopt(socket->get(), t.level, t.option, &get, &get_sz),
+ SyscallSucceedsWithValue(0));
+ EXPECT_EQ(get_sz, sizeof(get));
+ EXPECT_EQ(get, set);
+}
+
+TEST_P(IPUnboundSocketTest, ZeroTOS) {
+ auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket());
+ int set = 0;
+ socklen_t set_sz = sizeof(set);
+ TOSOption t = GetTOSOption(GetParam().domain);
+ EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, &set, set_sz),
+ SyscallSucceedsWithValue(0));
+ int get = -1;
+ socklen_t get_sz = sizeof(get);
+ EXPECT_THAT(getsockopt(socket->get(), t.level, t.option, &get, &get_sz),
+ SyscallSucceedsWithValue(0));
+ EXPECT_EQ(get_sz, sizeof(get));
+ EXPECT_EQ(get, set);
+}
+
+TEST_P(IPUnboundSocketTest, InvalidLargeTOS) {
+ auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket());
+ // Test with exceeding the byte space.
+ int set = 256;
+ constexpr int kDefaultTOS = 0;
+ socklen_t set_sz = sizeof(set);
+ TOSOption t = GetTOSOption(GetParam().domain);
+ if (GetParam().domain == AF_INET) {
+ EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, &set, set_sz),
+ SyscallSucceedsWithValue(0));
+ } else {
+ EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, &set, set_sz),
+ SyscallFailsWithErrno(EINVAL));
+ }
+ int get = -1;
+ socklen_t get_sz = sizeof(get);
+ EXPECT_THAT(getsockopt(socket->get(), t.level, t.option, &get, &get_sz),
+ SyscallSucceedsWithValue(0));
+ EXPECT_EQ(get_sz, sizeof(get));
+ EXPECT_EQ(get, kDefaultTOS);
+}
+
+TEST_P(IPUnboundSocketTest, CheckSkipECN) {
+ auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket());
+ int set = 0xFF;
+ socklen_t set_sz = sizeof(set);
+ TOSOption t = GetTOSOption(GetParam().domain);
+ EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, &set, set_sz),
+ SyscallSucceedsWithValue(0));
+ int expect = static_cast<uint8_t>(set);
+ if (GetParam().protocol == IPPROTO_TCP) {
+ expect &= ~INET_ECN_MASK;
+ }
+ int get = -1;
+ socklen_t get_sz = sizeof(get);
+ EXPECT_THAT(getsockopt(socket->get(), t.level, t.option, &get, &get_sz),
+ SyscallSucceedsWithValue(0));
+ EXPECT_EQ(get_sz, sizeof(get));
+ EXPECT_EQ(get, expect);
+}
+
+TEST_P(IPUnboundSocketTest, ZeroTOSOptionSize) {
+ auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket());
+ int set = 0xC0;
+ socklen_t set_sz = 0;
+ TOSOption t = GetTOSOption(GetParam().domain);
+ if (GetParam().domain == AF_INET) {
+ EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, &set, set_sz),
+ SyscallSucceedsWithValue(0));
+ } else {
+ EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, &set, set_sz),
+ SyscallFailsWithErrno(EINVAL));
+ }
+ int get = -1;
+ socklen_t get_sz = 0;
+ EXPECT_THAT(getsockopt(socket->get(), t.level, t.option, &get, &get_sz),
+ SyscallSucceedsWithValue(0));
+ EXPECT_EQ(get_sz, 0);
+ EXPECT_EQ(get, -1);
+}
+
+TEST_P(IPUnboundSocketTest, SmallTOSOptionSize) {
+ auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket());
+ int set = 0xC0;
+ constexpr int kDefaultTOS = 0;
+ TOSOption t = GetTOSOption(GetParam().domain);
+ for (socklen_t i = 1; i < sizeof(int); i++) {
+ int expect_tos;
+ socklen_t expect_sz;
+ if (GetParam().domain == AF_INET) {
+ EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, &set, i),
+ SyscallSucceedsWithValue(0));
+ expect_tos = set;
+ expect_sz = sizeof(uint8_t);
+ } else {
+ EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, &set, i),
+ SyscallFailsWithErrno(EINVAL));
+ expect_tos = kDefaultTOS;
+ expect_sz = i;
+ }
+ uint get = -1;
+ socklen_t get_sz = i;
+ EXPECT_THAT(getsockopt(socket->get(), t.level, t.option, &get, &get_sz),
+ SyscallSucceedsWithValue(0));
+ EXPECT_EQ(get_sz, expect_sz);
+ // Account for partial copies by getsockopt, retrieve the lower
+ // bits specified by get_sz, while comparing against expect_tos.
+ EXPECT_EQ(get & ~(~0 << (get_sz * 8)), expect_tos);
+ }
+}
+
+TEST_P(IPUnboundSocketTest, LargeTOSOptionSize) {
+ auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket());
+ int set = 0xC0;
+ TOSOption t = GetTOSOption(GetParam().domain);
+ for (socklen_t i = sizeof(int); i < 10; i++) {
+ EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, &set, i),
+ SyscallSucceedsWithValue(0));
+ int get = -1;
+ socklen_t get_sz = i;
+ // We expect the system call handler to only copy atmost sizeof(int) bytes
+ // as asserted by the check below. Hence, we do not expect the copy to
+ // overflow in getsockopt.
+ EXPECT_THAT(getsockopt(socket->get(), t.level, t.option, &get, &get_sz),
+ SyscallSucceedsWithValue(0));
+ EXPECT_EQ(get_sz, sizeof(int));
+ EXPECT_EQ(get, set);
+ }
+}
+
+TEST_P(IPUnboundSocketTest, NegativeTOS) {
+ auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket());
+
+ int set = -1;
+ socklen_t set_sz = sizeof(set);
+ TOSOption t = GetTOSOption(GetParam().domain);
+ EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, &set, set_sz),
+ SyscallSucceedsWithValue(0));
+ int expect;
+ if (GetParam().domain == AF_INET) {
+ expect = static_cast<uint8_t>(set);
+ if (GetParam().protocol == IPPROTO_TCP) {
+ expect &= ~INET_ECN_MASK;
+ }
+ } else {
+ // On IPv6 TCLASS, setting -1 has the effect of resetting the
+ // TrafficClass.
+ expect = 0;
+ }
+ int get = -1;
+ socklen_t get_sz = sizeof(get);
+ EXPECT_THAT(getsockopt(socket->get(), t.level, t.option, &get, &get_sz),
+ SyscallSucceedsWithValue(0));
+ EXPECT_EQ(get_sz, sizeof(get));
+ EXPECT_EQ(get, expect);
+}
+
+TEST_P(IPUnboundSocketTest, InvalidNegativeTOS) {
+ auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket());
+ int set = -2;
+ socklen_t set_sz = sizeof(set);
+ TOSOption t = GetTOSOption(GetParam().domain);
+ int expect;
+ if (GetParam().domain == AF_INET) {
+ EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, &set, set_sz),
+ SyscallSucceedsWithValue(0));
+ expect = static_cast<uint8_t>(set);
+ if (GetParam().protocol == IPPROTO_TCP) {
+ expect &= ~INET_ECN_MASK;
+ }
+ } else {
+ EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, &set, set_sz),
+ SyscallFailsWithErrno(EINVAL));
+ expect = 0;
+ }
+ int get = 0;
+ socklen_t get_sz = sizeof(get);
+ EXPECT_THAT(getsockopt(socket->get(), t.level, t.option, &get, &get_sz),
+ SyscallSucceedsWithValue(0));
+ EXPECT_EQ(get_sz, sizeof(get));
+ EXPECT_EQ(get, expect);
+}
+
INSTANTIATE_TEST_SUITE_P(
IPUnboundSockets, IPUnboundSocketTest,
::testing::ValuesIn(VecCat<SocketKind>(VecCat<SocketKind>(
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-11 23:24:47 +0000