github.com/keybase/client/go@v0.0.0-20240309051027-028f7c731f8b/kbfs/libdokan/fso.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  	"sync/atomic"
     9  	"time"
    10  
    11  	"github.com/keybase/client/go/kbfs/dokan"
    12  	"github.com/keybase/client/go/kbfs/libkbfs"
    13  	"golang.org/x/net/context"
    14  )
    15  
    16  // FSO is a common type for file system objects, i.e. Dirs or Files.
    17  type FSO struct {
    18  	refcount refcount // nolint -- it's used when embedded in dir/file
    19  	name     string   // KBFS name, not encoded for windows
    20  	folder   *Folder
    21  	node     libkbfs.Node
    22  	parent   libkbfs.Node
    23  	emptyFile
    24  }
    25  
    26  // SetFileTime sets mtime for FSOs (File and Dir). TLFs have a separate SetFileTime.
    27  func (f *FSO) SetFileTime(ctx context.Context, fi *dokan.FileInfo, creation time.Time, lastAccess time.Time, lastWrite time.Time) (err error) {
    28  	f.folder.fs.logEnter(ctx, "FSO SetFileTime")
    29  	defer func() { f.folder.reportErr(ctx, libkbfs.WriteMode, err) }()
    30  	f.folder.fs.log.CDebugf(ctx, "FSO SetFileTime %v %v %v", creation, lastAccess, lastWrite)
    31  
    32  	if !lastWrite.IsZero() {
    33  		return f.folder.fs.config.KBFSOps().SetMtime(ctx, f.node, &lastWrite)
    34  	}
    35  
    36  	return nil
    37  }
    38  
    39  type refcount struct {
    40  	x int32
    41  }
    42  
    43  func (rc *refcount) Increase() {
    44  	atomic.AddInt32(&rc.x, 1)
    45  }
    46  
    47  func (rc *refcount) Decrease() bool {
    48  	return atomic.AddInt32(&rc.x, -1) == 0
    49  }