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