github.com/hanwen/go-fuse@v1.0.0/fuse/server_linux.go (about) 1 // Copyright 2016 the Go-FUSE Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package fuse 6 7 import ( 8 "log" 9 "syscall" 10 ) 11 12 func (ms *Server) systemWrite(req *request, header []byte) Status { 13 if req.flatDataSize() == 0 { 14 err := handleEINTR(func() error { 15 _, err := syscall.Write(ms.mountFd, header) 16 return err 17 }) 18 return ToStatus(err) 19 } 20 21 if req.fdData != nil { 22 if ms.canSplice { 23 err := ms.trySplice(header, req, req.fdData) 24 if err == nil { 25 req.readResult.Done() 26 return OK 27 } 28 log.Println("trySplice:", err) 29 } 30 31 sz := req.flatDataSize() 32 buf := ms.allocOut(req, uint32(sz)) 33 req.flatData, req.status = req.fdData.Bytes(buf) 34 header = req.serializeHeader(len(req.flatData)) 35 } 36 37 _, err := writev(ms.mountFd, [][]byte{header, req.flatData}) 38 if req.readResult != nil { 39 req.readResult.Done() 40 } 41 return ToStatus(err) 42 }