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Test for passing zero-length SCM_RIGHTS fd arrays

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PiperOrigin-RevId: 583488887
This commit is contained in:
gVisor bot
2023-11-17 14:37:09 -08:00
parent e184849c0c
commit 51318e8a91
1 changed files with 36 additions and 0 deletions
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test/syscalls/linux/socket_unix_cmsg.cc
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@@ -658,6 +658,42 @@ TEST_P(UnixSocketPairCmsgTest, FDPassPeek) {
EXPECT_THAT(close(received_fd), SyscallSucceeds());
}
// A zero-length SCM_RIGHTS array should be equivalent to sending no FDs at all.
TEST_P(UnixSocketPairCmsgTest, ZeroFDPass) {
auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
char sent_data[20];
RandomizeBuffer(sent_data, sizeof(sent_data));
ASSERT_NO_FATAL_FAILURE(
SendFDs(sockets->first_fd(), nullptr, 0, sent_data, sizeof(sent_data)));
char received_data[sizeof(sent_data)];
ASSERT_NO_FATAL_FAILURE(
RecvNoCmsg(sockets->second_fd(), received_data, sizeof(received_data)));
EXPECT_EQ(0, memcmp(received_data, sent_data, sizeof(sent_data)));
}
TEST_P(UnixSocketPairCmsgTest, ZeroFDPassCoalesceData) {
SKIP_IF(GetParam().type != SOCK_STREAM);
auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
char sent_data[20];
RandomizeBuffer(sent_data, sizeof(sent_data));
ASSERT_NO_FATAL_FAILURE(
SendFDs(sockets->first_fd(), nullptr, 0, sent_data, sizeof(sent_data)));
ASSERT_NO_FATAL_FAILURE(
WriteFd(sockets->first_fd(), sent_data, sizeof(sent_data)));
char received_data[sizeof(sent_data) * 2];
ASSERT_NO_FATAL_FAILURE(
RecvNoCmsg(sockets->second_fd(), received_data, sizeof(received_data)));
EXPECT_EQ(0, memcmp(received_data, sent_data, sizeof(sent_data)));
EXPECT_EQ(0, memcmp(received_data + sizeof(sent_data), sent_data,
sizeof(sent_data)));
}
TEST_P(UnixSocketPairCmsgTest, BasicCredPass) {
auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());