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/*
* Copyright (C) 2026 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#include "shared/source/os_interface/linux/ipc_socket_client.h"
#include "shared/source/os_interface/linux/ipc_socket_server.h"
#include "shared/test/common/helpers/debug_manager_state_restore.h"
#include "shared/test/common/helpers/variable_backup.h"
#include "shared/test/common/os_interface/linux/sys_calls_linux_ult.h"
#include "shared/test/common/test_macros/test.h"
#include <errno.h>
#include <fcntl.h>
#include <mutex>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
using namespace NEO;
namespace NEO {
namespace SysCalls {
extern int sendmsgCalled;
extern int recvmsgCalled;
extern uint32_t closeFuncCalled;
extern int dupCalled;
} // namespace SysCalls
} // namespace NEO
class TestableIpcSocketServerForIntegration : public IpcSocketServer {
public:
using IpcSocketServer::handleMap;
using IpcSocketServer::handleMapMutex;
using IpcSocketServer::serverRunning;
using IpcSocketServer::serverSocket;
using IpcSocketServer::shutdownImpl;
};
class IpcSocketIntegrationTest : public ::testing::Test {
public:
void SetUp() override {
SysCalls::sendmsgCalled = 0;
SysCalls::recvmsgCalled = 0;
}
void TearDown() override {
SysCalls::sysCallsSendmsg = nullptr;
SysCalls::sysCallsRecvmsg = nullptr;
SysCalls::sysCallsRecv = nullptr;
}
};
TEST_F(IpcSocketIntegrationTest, givenServerAndClientWhenClientRequestsNonExistentHandleThenReceivesFailure) {
VariableBackup<decltype(SysCalls::sysCallsSendmsg)> sendmsgBackup(&SysCalls::sysCallsSendmsg);
VariableBackup<decltype(SysCalls::sysCallsRecv)> recvBackup(&SysCalls::sysCallsRecv);
VariableBackup<decltype(SysCalls::sysCallsRecvmsg)> recvmsgBackup(&SysCalls::sysCallsRecvmsg);
SysCalls::sysCallsSendmsg = [](int, const struct msghdr *msg, int) -> ssize_t {
if (msg->msg_iov && msg->msg_iovlen > 0) {
return static_cast<ssize_t>(msg->msg_iov[0].iov_len);
}
return -1;
};
SysCalls::sysCallsRecvmsg = [](int, struct msghdr *msg, int) -> ssize_t {
if (msg->msg_iov && msg->msg_iovlen > 0) {
IpcSocketResponsePayload *payload = static_cast<IpcSocketResponsePayload *>(msg->msg_iov[0].iov_base);
payload->success = false;
return static_cast<ssize_t>(msg->msg_iov[0].iov_len);
}
return -1;
};
SysCalls::sysCallsRecv = [](int, void *buf, size_t len, int) -> ssize_t {
if (len == sizeof(IpcSocketMessage)) {
IpcSocketMessage *msg = static_cast<IpcSocketMessage *>(buf);
msg->type = IpcSocketMessageType::responseHandle;
msg->handleId = 99999;
msg->payloadSize = sizeof(IpcSocketResponsePayload);
return sizeof(IpcSocketMessage);
} else if (len == sizeof(IpcSocketResponsePayload)) {
IpcSocketResponsePayload *payload = static_cast<IpcSocketResponsePayload *>(buf);
payload->success = false;
return sizeof(IpcSocketResponsePayload);
}
return -1;
};
IpcSocketClient client;
int receivedFd = client.requestHandle(99999);
EXPECT_EQ(-1, receivedFd);
}
TEST_F(IpcSocketIntegrationTest, givenMessageStructsWhenCheckingSizeThenCorrectSizesAreUsed) {
EXPECT_EQ(24u, sizeof(IpcSocketMessage));
EXPECT_EQ(8u, sizeof(IpcSocketResponsePayload));
}
TEST_F(IpcSocketIntegrationTest, givenIpcSocketMessageWhenFillingFieldsThenAllFieldsAreAccessible) {
IpcSocketMessage msg;
msg.type = IpcSocketMessageType::requestHandle;
msg.processId = 12345;
msg.handleId = 67890;
msg.payloadSize = 100;
msg.reserved = 0;
EXPECT_EQ(IpcSocketMessageType::requestHandle, msg.type);
EXPECT_EQ(12345u, msg.processId);
EXPECT_EQ(67890u, msg.handleId);
EXPECT_EQ(100u, msg.payloadSize);
}
TEST_F(IpcSocketIntegrationTest, givenIpcSocketResponsePayloadWhenFillingFieldsThenAllFieldsAreAccessible) {
IpcSocketResponsePayload payload;
payload.success = true;
EXPECT_TRUE(payload.success);
}
TEST_F(IpcSocketIntegrationTest, givenIpcHandleEntryWhenInitializedThenDefaultValuesAreCorrect) {
IpcHandleEntry entry;
EXPECT_EQ(-1, entry.fileDescriptor);
EXPECT_EQ(0u, entry.refCount);
}
TEST_F(IpcSocketIntegrationTest, givenServerWhenReceivingInvalidMessageTypeThenHandlesGracefully) {
VariableBackup<decltype(SysCalls::sysCallsRecv)> recvBackup(&SysCalls::sysCallsRecv);
VariableBackup<decltype(SysCalls::sysCallsClose)> closeBackup(&SysCalls::sysCallsClose);
SysCalls::sysCallsRecv = [](int, void *, size_t, int) -> ssize_t { return -1; };
SysCalls::sysCallsClose = [](int) -> int { return 0; };
TestableIpcSocketServerForIntegration server;
server.serverRunning.store(true);
server.serverSocket = 5;
server.shutdown();
EXPECT_FALSE(server.isRunning());
}
TEST_F(IpcSocketIntegrationTest, givenServerWhenMultipleHandlesRegisteredThenEachHasUniqueEntry) {
VariableBackup<decltype(SysCalls::sysCallsDup)> dupBackup(&SysCalls::sysCallsDup);
VariableBackup<decltype(SysCalls::sysCallsClose)> closeBackup(&SysCalls::sysCallsClose);
static int dupCounter = 100;
dupCounter = 100;
SysCalls::sysCallsDup = [](int) -> int { return ++dupCounter; };
SysCalls::sysCallsClose = [](int) -> int { return 0; };
TestableIpcSocketServerForIntegration server;
server.serverRunning.store(true);
server.serverSocket = 5;
EXPECT_TRUE(server.registerHandle(1, 10));
EXPECT_TRUE(server.registerHandle(2, 20));
EXPECT_TRUE(server.registerHandle(3, 30));
{
std::lock_guard<std::mutex> lock(server.handleMapMutex);
EXPECT_EQ(3u, server.handleMap.size());
EXPECT_EQ(1u, server.handleMap.count(1));
EXPECT_EQ(1u, server.handleMap.count(2));
EXPECT_EQ(1u, server.handleMap.count(3));
}
EXPECT_TRUE(server.unregisterHandle(2));
EXPECT_TRUE(server.unregisterHandle(1));
EXPECT_TRUE(server.unregisterHandle(3));
{
std::lock_guard<std::mutex> lock(server.handleMapMutex);
EXPECT_EQ(0u, server.handleMap.size());
}
}
TEST_F(IpcSocketIntegrationTest, givenClientWhenConnectingToNonExistentServerThenConnectFails) {
VariableBackup<decltype(SysCalls::sysCallsSocket)> socketBackup(&SysCalls::sysCallsSocket);
VariableBackup<decltype(SysCalls::sysCallsConnect)> connectBackup(&SysCalls::sysCallsConnect);
VariableBackup<decltype(SysCalls::sysCallsSetsockopt)> setsockoptBackup(&SysCalls::sysCallsSetsockopt);
SysCalls::sysCallsSocket = [](int, int, int) -> int { return 10; };
SysCalls::sysCallsConnect = [](int, const struct sockaddr *, socklen_t) -> int {
errno = ECONNREFUSED;
return -1;
};
SysCalls::sysCallsSetsockopt = [](int, int, int, const void *, socklen_t) -> int { return 0; };
IpcSocketClient client;
EXPECT_FALSE(client.connectToServer("nonexistent_server"));
EXPECT_FALSE(client.isConnected());
}
TEST_F(IpcSocketIntegrationTest, givenServerWithRegisteredHandleWhenShutdownThenHandleIsCleanedUp) {
VariableBackup<decltype(SysCalls::sysCallsDup)> dupBackup(&SysCalls::sysCallsDup);
VariableBackup<decltype(SysCalls::sysCallsClose)> closeBackup(&SysCalls::sysCallsClose);
SysCalls::sysCallsDup = [](int oldfd) -> int { return oldfd + 100; };
static bool closedFd142 = false;
static bool closedServerSocket = false;
closedFd142 = false;
closedServerSocket = false;
SysCalls::sysCallsClose = [](int fd) -> int {
if (fd == 142) {
closedFd142 = true;
} else if (fd == 5) {
closedServerSocket = true;
}
return 0;
};
TestableIpcSocketServerForIntegration server;
server.serverRunning.store(true);
server.serverSocket = 5;
EXPECT_TRUE(server.registerHandle(12345, 42));
server.shutdownImpl();
EXPECT_TRUE(closedFd142);
EXPECT_TRUE(closedServerSocket);
EXPECT_FALSE(server.isRunning());
}
TEST_F(IpcSocketIntegrationTest, givenServerWhenRegisterHandleWithSameIdDifferentFdThenUsesExistingHandle) {
VariableBackup<decltype(SysCalls::sysCallsDup)> dupBackup(&SysCalls::sysCallsDup);
VariableBackup<decltype(SysCalls::sysCallsClose)> closeBackup(&SysCalls::sysCallsClose);
static int dupCallCountLocal = 0;
dupCallCountLocal = 0;
SysCalls::sysCallsDup = [](int oldfd) -> int {
dupCallCountLocal++;
return oldfd + 100;
};
SysCalls::sysCallsClose = [](int) -> int { return 0; };
TestableIpcSocketServerForIntegration server;
server.serverRunning.store(true);
server.serverSocket = 5;
uint64_t handleId = 12345;
EXPECT_TRUE(server.registerHandle(handleId, 42));
EXPECT_EQ(1, dupCallCountLocal);
EXPECT_TRUE(server.registerHandle(handleId, 99));
EXPECT_EQ(1, dupCallCountLocal);
{
std::lock_guard<std::mutex> lock(server.handleMapMutex);
EXPECT_EQ(2u, server.handleMap[handleId].refCount);
}
}
TEST_F(IpcSocketIntegrationTest, givenClientWhenDisconnectedAndTryToRequestHandleThenFails) {
IpcSocketClient client;
EXPECT_FALSE(client.isConnected());
int fd = client.requestHandle(123);
EXPECT_EQ(-1, fd);
}
TEST_F(IpcSocketIntegrationTest, givenMessageTypesWhenCheckingValuesThenCorrectEnumValues) {
EXPECT_EQ(1u, static_cast<uint32_t>(IpcSocketMessageType::requestHandle));
EXPECT_EQ(2u, static_cast<uint32_t>(IpcSocketMessageType::responseHandle));
}
TEST_F(IpcSocketIntegrationTest, givenServerWhenPollReturnsErrorThenServerHandlesGracefully) {
VariableBackup<decltype(SysCalls::sysCallsClose)> closeBackup(&SysCalls::sysCallsClose);
SysCalls::sysCallsClose = [](int) -> int { return 0; };
TestableIpcSocketServerForIntegration server;
server.serverRunning.store(true);
server.serverSocket = 5;
server.shutdown();
EXPECT_FALSE(server.isRunning());
}
TEST_F(IpcSocketIntegrationTest, givenServerWhenAcceptReturnsErrorThenContinuesRunning) {
VariableBackup<decltype(SysCalls::sysCallsClose)> closeBackup(&SysCalls::sysCallsClose);
SysCalls::sysCallsClose = [](int) -> int { return 0; };
TestableIpcSocketServerForIntegration server;
server.serverRunning.store(true);
server.serverSocket = 5;
EXPECT_TRUE(server.isRunning());
server.shutdown();
EXPECT_FALSE(server.isRunning());
}
TEST_F(IpcSocketIntegrationTest, givenClientWhenSendReturnsPartialWriteThenRequestHandleFails) {
VariableBackup<decltype(SysCalls::sysCallsSocket)> socketBackup(&SysCalls::sysCallsSocket);
VariableBackup<decltype(SysCalls::sysCallsConnect)> connectBackup(&SysCalls::sysCallsConnect);
VariableBackup<decltype(SysCalls::sysCallsSetsockopt)> setsockoptBackup(&SysCalls::sysCallsSetsockopt);
VariableBackup<decltype(SysCalls::sysCallsSend)> sendBackup(&SysCalls::sysCallsSend);
SysCalls::sysCallsSocket = [](int, int, int) -> int { return 10; };
SysCalls::sysCallsConnect = [](int, const struct sockaddr *, socklen_t) -> int { return 0; };
SysCalls::sysCallsSetsockopt = [](int, int, int, const void *, socklen_t) -> int { return 0; };
SysCalls::sysCallsSend = [](int, const void *, size_t len, int) -> ssize_t {
return static_cast<ssize_t>(len - 1);
};
IpcSocketClient client;
EXPECT_TRUE(client.connectToServer("test"));
int fd = client.requestHandle(123);
EXPECT_EQ(-1, fd);
}
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