forked from TrueCloudLab/frostfs-s3-gw
48 lines
1.2 KiB
Go
48 lines
1.2 KiB
Go
|
// +build !windows
|
||
|
|
|
||
|
|
/*
|
||
|
|
* MinIO Cloud Storage, (C) 2018 MinIO, Inc.
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
* you may not use this file except in compliance with the License.
|
||
|
|
* You may obtain a copy of the License at
|
||
|
|
*
|
||
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specific language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
package ioutil
|
||
|
|
|
||
|
|
import (
|
||
|
|
"io"
|
||
|
|
"os"
|
||
|
|
)
|
||
|
|
|
||
|
|
// AppendFile - appends the file "src" to the file "dst"
|
||
|
|
func AppendFile(dst string, src string, osync bool) error {
|
||
|
|
flags := os.O_WRONLY | os.O_APPEND | os.O_CREATE
|
||
|
|
if osync {
|
||
|
|
flags = flags | os.O_SYNC
|
||
|
|
}
|
||
|
|
appendFile, err := os.OpenFile(dst, flags, 0666)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
defer appendFile.Close()
|
||
|
|
|
||
|
|
srcFile, err := os.Open(src)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
defer srcFile.Close()
|
||
|
|
// Allocate staging buffer.
|
||
|
|
var buf = make([]byte, defaultAppendBufferSize)
|
||
|
|
_, err = io.CopyBuffer(appendFile, srcFile, buf)
|
||
|
|
return err
|
||
|
|
}
|