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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <sys/types.h>
namespace fastos {
/*
* Class handling pointers to functions used by FastOS_File for read
* and writa access. Unit tests might modify pointers to inject errors.
*/
class File_RW_Ops
{
using ReadFunc = ssize_t (*)(int fd, void* buf, size_t count);
using WriteFunc = ssize_t (*)(int fd, const void* buf, size_t count);
using PreadFunc = ssize_t (*)(int fd, void* buf, size_t count, off_t offset);
using PwriteFunc = ssize_t (*)(int fd, const void* buf, size_t count, off_t offset);
public:
static ReadFunc _read;
static WriteFunc _write;
static PreadFunc _pread;
static PwriteFunc _pwrite;
static ssize_t read(int fd, void* buf, size_t count) { return _read(fd, buf, count); }
static ssize_t write(int fd, const void* buf, size_t count) { return _write(fd, buf, count); }
static ssize_t pread(int fd, void* buf, size_t count, off_t offset) { return _pread(fd, buf, count, offset); }
static ssize_t pwrite(int fd, const void* buf, size_t count, off_t offset) { return _pwrite(fd, buf, count, offset); }
};
}
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