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construct/include/ircd/fs/read.h

41 lines
1.2 KiB
C++

// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice is present in all copies. The
// full license for this software is available in the LICENSE file.
#pragma once
#define HAVE_IRCD_FS_READ_H
namespace ircd::fs
{
struct read_opts extern const read_opts_default;
// Yields ircd::ctx for read into buffer; returns view of read portion.
const_buffer read(const string_view &path, const mutable_buffer &, const read_opts & = read_opts_default);
// Yields ircd::ctx for read into allocated string; returns that string
std::string read(const string_view &path, const read_opts & = read_opts_default);
}
/// Options for a read operation
struct ircd::fs::read_opts
{
read_opts() = default;
read_opts(const off_t &);
/// Offset in the file to start the read from.
off_t offset {0};
/// Request priority (this option may be improved, avoid for now)
int16_t priority {0};
};
inline
ircd::fs::read_opts::read_opts(const off_t &offset)
:offset{offset}
{}