mirror of
https://github.com/matrix-construct/construct
synced 2024-12-28 00:14:07 +01:00
57 lines
2.1 KiB
C++
57 lines
2.1 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_WRITE_H
|
|
|
|
namespace ircd::fs
|
|
{
|
|
struct write_opts extern const write_opts_default;
|
|
|
|
// Yields ircd::ctx for write from buffer; returns view of written portion
|
|
const_buffer write(const fd &, const const_buffer &, const write_opts & = write_opts_default);
|
|
const_buffer write(const string_view &path, const const_buffer &, const write_opts & = write_opts_default);
|
|
|
|
// Yields ircd::ctx to append to file from buffer; returns view of written portion
|
|
const_buffer append(const fd &, const const_buffer &, const write_opts & = write_opts_default);
|
|
const_buffer append(const string_view &path, const const_buffer &, const write_opts & = write_opts_default);
|
|
|
|
// Yields ircd::ctx to overwrite (trunc) file from buffer; returns view of written portion
|
|
const_buffer overwrite(const fd &, const const_buffer & = {}, const write_opts & = write_opts_default);
|
|
const_buffer overwrite(const string_view &path, const const_buffer & = {}, const write_opts & = write_opts_default);
|
|
|
|
// Truncate file to explicit size
|
|
void truncate(const fd &, const size_t &, const write_opts & = write_opts_default);
|
|
void truncate(const string_view &path, const size_t &, const write_opts & = write_opts_default);
|
|
|
|
// Allocate
|
|
void allocate(const fd &, const size_t &size, const write_opts & = write_opts_default);
|
|
}
|
|
|
|
/// Options for a write operation
|
|
struct ircd::fs::write_opts
|
|
{
|
|
write_opts() = default;
|
|
write_opts(const off_t &);
|
|
|
|
/// Offset in the file to start the write from.
|
|
off_t offset {0};
|
|
|
|
/// Request priority (this option may be improved, avoid for now)
|
|
int16_t priority {0};
|
|
|
|
/// for allocate()
|
|
bool keep_size {false};
|
|
};
|
|
|
|
inline
|
|
ircd::fs::write_opts::write_opts(const off_t &offset)
|
|
:offset{offset}
|
|
{}
|