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96 lines
3.3 KiB
C++
96 lines
3.3 KiB
C++
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/*
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* Copyright (C) 2011-2016 Intel Corporation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include "sgx_defs.h"
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#include "enclave.h"
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#include "se_event.h"
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#include "internal/se_error_internal.h"
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/* wait on untrusted event */
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extern "C" int sgx_thread_wait_untrusted_event_ocall(const void *self)
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{
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if (self == NULL)
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return SGX_ERROR_INVALID_PARAMETER;
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se_handle_t hevent = CEnclavePool::instance()->get_event(self);
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if (hevent == NULL)
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return SE_ERROR_MUTEX_GET_EVENT;
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if (SE_MUTEX_SUCCESS != se_event_wait(hevent))
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return SE_ERROR_MUTEX_WAIT_EVENT;
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return SGX_SUCCESS;
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}
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/* set untrusted event */
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extern "C" int sgx_thread_set_untrusted_event_ocall(const void *waiter)
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{
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if (waiter == NULL)
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return SGX_ERROR_INVALID_PARAMETER;
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se_handle_t hevent = CEnclavePool::instance()->get_event(waiter);
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if (hevent == NULL)
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return SE_ERROR_MUTEX_GET_EVENT;
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if (SE_MUTEX_SUCCESS != se_event_wake(hevent))
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return SE_ERROR_MUTEX_WAKE_EVENT;
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return SGX_SUCCESS;
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}
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extern "C" int sgx_thread_set_multiple_untrusted_events_ocall(const void **waiters, size_t total)
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{
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if (waiters == NULL || *waiters == NULL)
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return SGX_ERROR_INVALID_PARAMETER;
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for (unsigned int i = 0; i < total; i++) {
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se_handle_t hevent = CEnclavePool::instance()->get_event(*waiters++);
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if (hevent == NULL)
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return SE_ERROR_MUTEX_GET_EVENT;
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if (SE_MUTEX_SUCCESS != se_event_wake(hevent))
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return SE_ERROR_MUTEX_WAKE_EVENT;
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}
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return SGX_SUCCESS;
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}
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extern "C" int sgx_thread_setwait_untrusted_events_ocall(const void *waiter, const void *self)
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{
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int ret = sgx_thread_set_untrusted_event_ocall(waiter);
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if (ret != SGX_SUCCESS) return ret;
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return sgx_thread_wait_untrusted_event_ocall(self);
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}
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