github.com/openebs/node-disk-manager@v1.9.1-0.20230225014141-4531f06ffa1e/pkg/util/sparsefile.go (about)

     1  /*
     2  Copyright 2018 The OpenEBS Author
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package util
    18  
    19  import "os"
    20  
    21  //import "syscall"
    22  
    23  //SparseFileCreate will create a new sparse file if none exists
    24  // at the give path and will set the size to specified value
    25  func SparseFileCreate(path string, size int64) error {
    26  	f, err := os.Create(path)
    27  	if err != nil {
    28  		return err
    29  	}
    30  	return f.Truncate(size)
    31  }
    32  
    33  //SparseFileDelete will delete the sparse file if it exists
    34  func SparseFileDelete(path string) error {
    35  	err := os.Remove(path)
    36  	if os.IsNotExist(err) {
    37  		return nil
    38  	}
    39  	return err
    40  }
    41  
    42  //SparseFileInfo will return the stats of the sparse file
    43  func SparseFileInfo(path string) (os.FileInfo, error) {
    44  	return os.Stat(path)
    45  }