63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
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// Copyright 2017 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "internal/filesystem.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#if defined(CPU_FEATURES_MOCK_FILESYSTEM)
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// Implementation will be provided by test/filesystem_for_testing.cc.
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#elif defined(_MSC_VER)
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#include <io.h>
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int CpuFeatures_OpenFile(const char* filename) {
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int fd = -1;
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_sopen_s(&fd, filename, _O_RDONLY, _SH_DENYWR, _S_IREAD);
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return fd;
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}
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void CpuFeatures_CloseFile(int file_descriptor) { _close(file_descriptor); }
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int CpuFeatures_ReadFile(int file_descriptor, void* buffer,
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size_t buffer_size) {
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return _read(file_descriptor, buffer, (unsigned int)buffer_size);
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}
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#else
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#include <unistd.h>
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int CpuFeatures_OpenFile(const char* filename) {
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int result;
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do {
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result = open(filename, O_RDONLY);
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} while (result == -1L && errno == EINTR);
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return result;
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}
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void CpuFeatures_CloseFile(int file_descriptor) { close(file_descriptor); }
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int CpuFeatures_ReadFile(int file_descriptor, void* buffer,
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size_t buffer_size) {
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int result;
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do {
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result = read(file_descriptor, buffer, buffer_size);
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} while (result == -1L && errno == EINTR);
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return result;
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}
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#endif
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