Atmosphere/stratosphere/libstratosphere/source/sf/hipc/sf_hipc_api.cpp

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/*
* Copyright (c) 2018-2019 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stratosphere.hpp>
namespace sts::sf::hipc {
namespace {
NX_INLINE Result ReceiveImpl(Handle session_handle, void *message_buf, size_t message_buf_size) {
s32 unused_index;
if (message_buf == armGetTls()) {
/* Consider: STS_ASSERT(message_buf_size == TlsMessageBufferSize); */
return svcReplyAndReceive(&unused_index, &session_handle, 1, INVALID_HANDLE, U64_MAX);
} else {
return svcReplyAndReceiveWithUserBuffer(&unused_index, message_buf, message_buf_size, &session_handle, 1, INVALID_HANDLE, U64_MAX);
}
}
NX_INLINE Result ReplyImpl(Handle session_handle, void *message_buf, size_t message_buf_size) {
s32 unused_index;
if (message_buf == armGetTls()) {
/* Consider: STS_ASSERT(message_buf_size == TlsMessageBufferSize); */
return svcReplyAndReceive(&unused_index, &session_handle, 0, session_handle, 0);
} else {
return svcReplyAndReceiveWithUserBuffer(&unused_index, message_buf, message_buf_size, &session_handle, 0, session_handle, 0);
}
}
}
Result Receive(ReceiveResult *out_recv_result, Handle session_handle, const cmif::PointerAndSize &message_buffer) {
R_TRY_CATCH(ReceiveImpl(session_handle, message_buffer.GetPointer(), message_buffer.GetSize())) {
R_CATCH(ResultKernelConnectionClosed) {
*out_recv_result = ReceiveResult::Closed;
return ResultSuccess;
}
R_CATCH(ResultKernelReceiveListBroken) {
*out_recv_result = ReceiveResult::NeedsRetry;
return ResultSuccess;
}
} R_END_TRY_CATCH;
*out_recv_result = ReceiveResult::Success;
return ResultSuccess;
}
Result Receive(bool *out_closed, Handle session_handle, const cmif::PointerAndSize &message_buffer) {
R_TRY_CATCH(ReceiveImpl(session_handle, message_buffer.GetPointer(), message_buffer.GetSize())) {
R_CATCH(ResultKernelConnectionClosed) {
*out_closed = true;
return ResultSuccess;
}
} R_END_TRY_CATCH;
*out_closed = false;
return ResultSuccess;
}
Result Reply(Handle session_handle, const cmif::PointerAndSize &message_buffer) {
R_TRY_CATCH(ReplyImpl(session_handle, message_buffer.GetPointer(), message_buffer.GetSize())) {
R_CATCH(ResultKernelTimedOut) { return ResultSuccess; }
R_CATCH(ResultKernelConnectionClosed) { return ResultSuccess; }
} R_END_TRY_CATCH;
/* ReplyImpl should *always* return an error. */
STS_ASSERT(false);
}
Result CreateSession(Handle *out_server_handle, Handle *out_client_handle) {
R_TRY_CATCH(svcCreateSession(out_server_handle, out_client_handle, 0, 0)) {
R_CATCH(ResultKernelResourceExhausted) { return ResultHipcOutOfSessions; }
} R_END_TRY_CATCH;
return ResultSuccess;
}
}