mirror of
https://github.com/intel/linux-sgx
synced 2026-06-08 14:49:32 +00:00
Angie Chinchilla
9441de4c38
This release is used in conjunction with the linux-sgx-driver Intial release: https://github.com/01org/linux-sgx-driver commit-id: 0e865ce5e6b297a787bcdc12d98bada8174be6d7 Intel-id: 33399 Signed-off-by: Angie Chinchilla <angie.v.chinchilla@intel.com>
70 lines
2.4 KiB
C
70 lines
2.4 KiB
C
/*
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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 "se_map.h"
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#include "se_trace.h"
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#include <stdlib.h>
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map_handle_t* map_file(se_file_handle_t fd, uint32_t *size)
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{
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struct stat st;
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memset(&st, 0, sizeof(st));
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if (-1 == fstat(fd, &st))
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return NULL;
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map_handle_t* mh = (map_handle_t *)calloc(1, sizeof(map_handle_t));
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if (mh == NULL)
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return NULL;
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mh->base_addr = (uint8_t *)mmap(NULL, (size_t)st.st_size,
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PROT_READ|PROT_WRITE, MAP_PRIVATE, fd, 0);
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if(MAP_FAILED == mh->base_addr)
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{
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free(mh);
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SE_TRACE(SE_TRACE_WARNING, "Couldn't map view of file, error code %x\n", errno);
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return NULL;
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}
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mh->length = (size_t)st.st_size;
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if (size) *size = (uint32_t)st.st_size;
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return mh;
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}
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void unmap_file(map_handle_t* mh)
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{
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munmap(mh->base_addr, mh->length);
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free(mh);
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}
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