github.com/keybase/client/go@v0.0.0-20240309051027-028f7c731f8b/kbfs/libdokan/symlink.go (about)

     1  // Copyright 2016 Keybase Inc. All rights reserved.
     2  // Use of this source code is governed by a BSD
     3  // license that can be found in the LICENSE file.
     4  
     5  package libdokan
     6  
     7  import (
     8  	"github.com/keybase/client/go/kbfs/dokan"
     9  	"github.com/keybase/client/go/kbfs/libkbfs"
    10  	"golang.org/x/net/context"
    11  )
    12  
    13  // Symlink represents KBFS symlinks.
    14  type Symlink struct {
    15  	// The directory this symlink is in. This should be safe to store
    16  	// here, without fear of Renames etc making it stale, because we
    17  	// never persist a Symlink into Folder.nodes; it has no
    18  	// libkbfs.Node, so that's impossible. This should make FUSE
    19  	// Lookup etc always get new nodes, limiting the lifetime of a
    20  	// single Symlink value.
    21  	parent *Dir
    22  	// isTargetADirectory - Some Windows programs want to know.
    23  	isTargetADirectory bool
    24  	name               string
    25  	emptyFile
    26  }
    27  
    28  // GetFileInformation does stat for dokan.
    29  func (s *Symlink) GetFileInformation(ctx context.Context, fi *dokan.FileInfo) (a *dokan.Stat, err error) {
    30  	s.parent.folder.fs.logEnter(ctx, "Symlink GetFileInformation")
    31  	defer func() { s.parent.folder.reportErr(ctx, libkbfs.ReadMode, err) }()
    32  
    33  	_, _, err = s.parent.folder.fs.config.KBFSOps().Lookup(
    34  		ctx, s.parent.node, s.parent.node.ChildName(s.name))
    35  	if err != nil {
    36  		return nil, errToDokan(err)
    37  	}
    38  
    39  	if s.isTargetADirectory {
    40  		return defaultSymlinkDirInformation()
    41  	}
    42  	return defaultSymlinkFileInformation()
    43  }