| // Copyright 2020 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package unix |
| |
| import ( |
| "syscall" |
| "unsafe" |
| ) |
| |
| func CopyFileRange(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error) { |
| r1, _, errno := syscall.Syscall6(copyFileRangeTrap, |
| uintptr(rfd), |
| uintptr(unsafe.Pointer(roff)), |
| uintptr(wfd), |
| uintptr(unsafe.Pointer(woff)), |
| uintptr(len), |
| uintptr(flags), |
| ) |
| n = int(r1) |
| if errno != 0 { |
| err = errno |
| } |
| return |
| } |
