file_unix.go

Documentation: github.com/containerd/continuity/fs/fstest

     1  //go:build !windows
     2  // +build !windows
     3  
     4  /*
     5     Copyright The containerd Authors.
     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 fstest
    21  
    22  import (
    23  	"path/filepath"
    24  	"time"
    25  
    26  	"github.com/containerd/continuity/sysx"
    27  	"golang.org/x/sys/unix"
    28  )
    29  
    30  // SetXAttr sets the xatter for the file
    31  func SetXAttr(name, key, value string) Applier {
    32  	return applyFn(func(root string) error {
    33  		path := filepath.Join(root, name)
    34  		return sysx.LSetxattr(path, key, []byte(value), 0)
    35  	})
    36  }
    37  
    38  // Lchtimes changes access and mod time of file without following symlink
    39  func Lchtimes(name string, atime, mtime time.Time) Applier {
    40  	return applyFn(func(root string) error {
    41  		path := filepath.Join(root, name)
    42  		at := unix.NsecToTimespec(atime.UnixNano())
    43  		mt := unix.NsecToTimespec(mtime.UnixNano())
    44  		utimes := [2]unix.Timespec{at, mt}
    45  		return unix.UtimesNanoAt(unix.AT_FDCWD, path, utimes[0:], unix.AT_SYMLINK_NOFOLLOW)
    46  	})
    47  }
    48  
    49  func Base() Applier {
    50  	return applyFn(func(root string) error {
    51  		// do nothing, as the base is not special
    52  		return nil
    53  	})
    54  }
    55
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