Source file src/internal/syscall/unix/copy_file_range_unix.go

     1  // Copyright 2020 The Go 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  //go:build freebsd || linux
     6  
     7  package unix
     8  
     9  import (
    10  	"syscall"
    11  	"unsafe"
    12  )
    13  
    14  func CopyFileRange(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error) {
    15  	r1, _, errno := syscall.Syscall6(copyFileRangeTrap,
    16  		uintptr(rfd),
    17  		uintptr(unsafe.Pointer(roff)),
    18  		uintptr(wfd),
    19  		uintptr(unsafe.Pointer(woff)),
    20  		uintptr(len),
    21  		uintptr(flags),
    22  	)
    23  	n = int(r1)
    24  	if errno != 0 {
    25  		err = errno
    26  	}
    27  	return
    28  }
    29  

View as plain text