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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/debug_settings/debug_settings_manager.h"
#include "shared/source/os_interface/linux/sys_calls.h"
#include <algorithm>
#include <cstddef>
#include <errno.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
namespace NEO {
IpcSocketClient::IpcSocketClient() = default;
IpcSocketClient::~IpcSocketClient() {
disconnect();
}
bool IpcSocketClient::connectToServer(const std::string &socketPath) {
if (isConnected()) {
return true;
}
clientSocket = NEO::SysCalls::socket(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0);
if (clientSocket == -1) {
PRINT_STRING(debugManager.flags.PrintDebugMessages.get(), stderr,
"IpcSocketClient: Failed to create socket: %s\n", strerror(errno));
return false;
}
struct timeval timeout;
timeout.tv_sec = socketTimeout / 1000;
timeout.tv_usec = (socketTimeout % 1000) * 1000;
NEO::SysCalls::setsockopt(clientSocket, SOL_SOCKET, SO_RCVTIMEO, &timeout, sizeof(timeout));
NEO::SysCalls::setsockopt(clientSocket, SOL_SOCKET, SO_SNDTIMEO, &timeout, sizeof(timeout));
struct sockaddr_un addr = {};
addr.sun_family = AF_UNIX;
size_t nameLen = std::min(socketPath.size(), sizeof(addr.sun_path) - 1);
addr.sun_path[0] = '\0';
memcpy(addr.sun_path + 1, socketPath.data(), nameLen);
socklen_t addrLen = static_cast<socklen_t>(offsetof(struct sockaddr_un, sun_path) + 1 + nameLen);
if (NEO::SysCalls::connect(clientSocket, reinterpret_cast<struct sockaddr *>(&addr), addrLen) == -1) {
PRINT_STRING(debugManager.flags.PrintDebugMessages.get(), stderr,
"IpcSocketClient: Failed to connect to abstract server '%s': %s\n",
socketPath.c_str(), strerror(errno));
NEO::SysCalls::close(clientSocket);
clientSocket = -1;
return false;
}
serverSocketPath = socketPath;
PRINT_STRING(debugManager.flags.PrintDebugMessages.get(), stderr,
"IpcSocketClient: Connected to abstract server name=%s\n", socketPath.c_str());
return true;
}
void IpcSocketClient::disconnect() {
if (clientSocket != -1) {
NEO::SysCalls::close(clientSocket);
clientSocket = -1;
serverSocketPath.clear();
}
}
int IpcSocketClient::requestHandle(uint64_t handleId) {
if (!isConnected()) {
return -1;
}
IpcSocketMessage msg;
msg.type = IpcSocketMessageType::requestHandle;
msg.processId = SysCalls::getpid();
msg.handleId = handleId;
msg.payloadSize = 0;
if (!sendMessage(msg)) {
return -1;
}
IpcSocketResponsePayload responsePayload = {};
int receivedFd = receiveFileDescriptor(&responsePayload, sizeof(responsePayload));
if (receivedFd == -1) {
IpcSocketMessage response;
if (receiveMessage(response, &responsePayload, sizeof(responsePayload))) {
if (response.type == IpcSocketMessageType::responseHandle &&
response.handleId == handleId && !responsePayload.success) {
PRINT_STRING(debugManager.flags.PrintDebugMessages.get(), stderr,
"IpcSocketClient: Server reported failure for handle %lu\n", handleId);
}
}
return -1;
}
if (!responsePayload.success) {
NEO::SysCalls::close(receivedFd);
return -1;
}
PRINT_STRING(debugManager.flags.PrintDebugMessages.get(), stderr,
"IpcSocketClient: Received handle %lu as fd %d\n", handleId, receivedFd);
return receivedFd;
}
int IpcSocketClient::receiveFileDescriptor(void *data, size_t dataSize) {
struct msghdr msg = {};
struct iovec iov;
char cmsgBuffer[CMSG_SPACE(sizeof(int))];
if (data && dataSize > 0) {
iov.iov_base = data;
iov.iov_len = dataSize;
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
}
msg.msg_control = cmsgBuffer;
msg.msg_controllen = sizeof(cmsgBuffer);
if (NEO::SysCalls::recvmsg(clientSocket, &msg, 0) == -1) {
PRINT_STRING(debugManager.flags.PrintDebugMessages.get(), stderr,
"IpcSocketClient: Failed to receive message: %s\n", strerror(errno));
return -1;
}
struct cmsghdr *cmsg = CMSG_FIRSTHDR(&msg);
if (cmsg && cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
return *reinterpret_cast<int *>(CMSG_DATA(cmsg));
}
return -1;
}
bool IpcSocketClient::sendMessage(const IpcSocketMessage &msg, const void *payload) {
if (NEO::SysCalls::send(clientSocket, &msg, sizeof(msg), 0) != sizeof(msg)) {
PRINT_STRING(debugManager.flags.PrintDebugMessages.get(), stderr,
"IpcSocketClient: Failed to send message header: %s\n", strerror(errno));
return false;
}
if (payload && msg.payloadSize > 0) {
if (NEO::SysCalls::send(clientSocket, payload, msg.payloadSize, 0) != static_cast<ssize_t>(msg.payloadSize)) {
PRINT_STRING(debugManager.flags.PrintDebugMessages.get(), stderr,
"IpcSocketClient: Failed to send message payload: %s\n", strerror(errno));
return false;
}
}
return true;
}
bool IpcSocketClient::receiveMessage(IpcSocketMessage &msg, void *payload, size_t maxPayloadSize) {
if (NEO::SysCalls::recv(clientSocket, &msg, sizeof(msg), MSG_WAITALL) != sizeof(msg)) {
PRINT_STRING(debugManager.flags.PrintDebugMessages.get(), stderr,
"IpcSocketClient: Failed to receive message header: %s\n", strerror(errno));
return false;
}
if (payload && msg.payloadSize > 0 && maxPayloadSize >= msg.payloadSize) {
if (NEO::SysCalls::recv(clientSocket, payload, msg.payloadSize, MSG_WAITALL) != static_cast<ssize_t>(msg.payloadSize)) {
PRINT_STRING(debugManager.flags.PrintDebugMessages.get(), stderr,
"IpcSocketClient: Failed to receive message payload: %s\n", strerror(errno));
return false;
}
}
return true;
}
} // namespace NEO
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