github.com/keybase/client/go@v0.0.0-20240309051027-028f7c731f8b/kbfs/libdokan/mounter.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  	"time"
     9  
    10  	"github.com/keybase/client/go/kbfs/dokan"
    11  	"github.com/keybase/client/go/logger"
    12  )
    13  
    14  type mounter struct {
    15  	options StartOptions
    16  	c       *dokan.MountHandle
    17  	log     logger.Logger
    18  }
    19  
    20  func (m *mounter) Unmount() error { return m.c.Close() }
    21  
    22  func (m *mounter) Mount() (err error) {
    23  	// Retry loop
    24  	for i := 8; true; i *= 2 {
    25  		m.c, err = dokan.Mount(&m.options.DokanConfig)
    26  		// break if success, no force or too many tries.
    27  		if err == nil || i > 128 {
    28  			break
    29  		}
    30  		m.log.Errorf("Failed to mount dokan filesystem (i=%d): %v", i, err)
    31  		// Sleep two times 800ms, 1.6s, 3.2s, ...
    32  		time.Sleep(time.Duration(i) * 100 * time.Millisecond)
    33  		if m.options.ForceMount {
    34  			err = dokan.Unmount(m.options.DokanConfig.Path)
    35  			if err != nil {
    36  				m.log.Errorf("Failed to unmount dokan filesystem (i=%d): %v",
    37  					i, err)
    38  			}
    39  			time.Sleep(time.Duration(i) * 100 * time.Millisecond)
    40  		}
    41  	}
    42  	return err
    43  }