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  1. // Copyright 2018 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. // +build linux,gccgo,arm
  5. package unix
  6. import (
  7. "syscall"
  8. "unsafe"
  9. )
  10. func seek(fd int, offset int64, whence int) (int64, syscall.Errno) {
  11. var newoffset int64
  12. offsetLow := uint32(offset & 0xffffffff)
  13. offsetHigh := uint32((offset >> 32) & 0xffffffff)
  14. _, _, err := Syscall6(SYS__LLSEEK, uintptr(fd), uintptr(offsetHigh), uintptr(offsetLow), uintptr(unsafe.Pointer(&newoffset)), uintptr(whence), 0)
  15. return newoffset, err
  16. }