go-ethereum/consensus/ethash/mmap_help_other.go
Arpit Temani 2321e64ed7
V0.2.16 candidate (#373)
* merge geth v1.10.15

* fix: Removed FastSync from cli server

* fix: TestHeadersRLPStorage

* Added t.skip(ETH2 in bor)

* fix: flow in create consensus engine

* bumped version

* Fix typo

* increase block time

* remove file

* bumped version

* merge gethv1.10.17

* bumped version

* fix failing tests

* Bump Go version to v1.18 (#368)

* Bump Go version to v1.18.1

* Build using netgo tag

This will create a static build using Go native networking stack.

Checked and it works stable for all archs and distros.

* Fix meta

* Bump version

* Meta as stable

Co-authored-by: Shivam Sharma <shivam691999@gmail.com>
Co-authored-by: Manav Darji <manavdarji.india@gmail.com>
Co-authored-by: Sandeep Sreenath <sandeep.sreenath@gmail.com>
Co-authored-by: Victor Castell <victor@victorcastell.com>
2022-05-06 12:31:48 +02:00

36 lines
1.4 KiB
Go

// Copyright 2021 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
//go:build !linux
// +build !linux
package ethash
import (
"os"
)
// ensureSize expands the file to the given size. This is to prevent runtime
// errors later on, if the underlying file expands beyond the disk capacity,
// even though it ostensibly is already expanded, but due to being sparse
// does not actually occupy the full declared size on disk.
func ensureSize(f *os.File, size int64) error {
// On systems which do not support fallocate, we merely truncate it.
// More robust alternatives would be to
// - Use posix_fallocate, or
// - explicitly fill the file with zeroes.
return f.Truncate(size)
}