-
Notifications
You must be signed in to change notification settings - Fork 562
/
fallocate_linux.go
35 lines (31 loc) · 1006 Bytes
/
fallocate_linux.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2018 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package main
import (
"os"
"syscall"
)
func maybeReserveDiskSpace(f *os.File, size int64) error {
const fallocKeepSize = 1 // This is FALLOC_FL_KEEP_SIZE
if err := syscall.Fallocate(int(f.Fd()), fallocKeepSize, 0, size); err != nil {
if err != syscall.EOPNOTSUPP && err != syscall.ENOSYS {
return err
}
}
return nil
}