storj.io/minio@v0.0.0-20230509071714-0cbc90f649b1/pkg/ioutil/append-file_nix.go (about)

     1  //go:build !windows
     2  // +build !windows
     3  
     4  /*
     5   * MinIO Cloud Storage, (C) 2018 MinIO, Inc.
     6   *
     7   * Licensed under the Apache License, Version 2.0 (the "License");
     8   * you may not use this file except in compliance with the License.
     9   * You may obtain a copy of the License at
    10   *
    11   *     http://www.apache.org/licenses/LICENSE-2.0
    12   *
    13   * Unless required by applicable law or agreed to in writing, software
    14   * distributed under the License is distributed on an "AS IS" BASIS,
    15   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    16   * See the License for the specific language governing permissions and
    17   * limitations under the License.
    18   */
    19  
    20  package ioutil
    21  
    22  import (
    23  	"io"
    24  	"os"
    25  )
    26  
    27  // AppendFile - appends the file "src" to the file "dst"
    28  func AppendFile(dst string, src string, osync bool) error {
    29  	flags := os.O_WRONLY | os.O_APPEND | os.O_CREATE
    30  	if osync {
    31  		flags = flags | os.O_SYNC
    32  	}
    33  	appendFile, err := os.OpenFile(dst, flags, 0666)
    34  	if err != nil {
    35  		return err
    36  	}
    37  	defer appendFile.Close()
    38  
    39  	srcFile, err := os.Open(src)
    40  	if err != nil {
    41  		return err
    42  	}
    43  	defer srcFile.Close()
    44  	_, err = io.Copy(appendFile, srcFile)
    45  	return err
    46  }