Update dependencies

vendor/github.com/pkg/sftp/request-interfaces.go

@@ -10,21 +10,29 @@ import (
 
 // FileReader should return an io.Reader for the filepath
 type FileReader interface {
-	Fileread(Request) (io.ReaderAt, error)
+	Fileread(*Request) (io.ReaderAt, error)
 }
 
 // FileWriter should return an io.Writer for the filepath
 type FileWriter interface {
-	Filewrite(Request) (io.WriterAt, error)
+	Filewrite(*Request) (io.WriterAt, error)
 }
 
 // FileCmder should return an error (rename, remove, setstate, etc.)
 type FileCmder interface {
-	Filecmd(Request) error
+	Filecmd(*Request) error
 }
 
-// FileInfoer should return file listing info and errors (readdir, stat)
-// note stat requests would return a list of 1
-type FileInfoer interface {
-	Fileinfo(Request) ([]os.FileInfo, error)
+// FileLister should return file info interface and errors (readdir, stat)
+type FileLister interface {
+	Filelist(*Request) (ListerAt, error)
+}
+
+// ListerAt does for file lists what io.ReaderAt does for files.
+// ListAt should return the number of entries copied and an io.EOF
+// error if at end of list. This is testable by comparing how many you
+// copied to how many could be copied (eg. n < len(ls) below).
+// The copy() builtin is best for the copying.
+type ListerAt interface {
+	ListAt([]os.FileInfo, int64) (int, error)
 }