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  1. // Copyright 2019 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 darwin
  5. package unix
  6. import "unsafe"
  7. // ReadDirent reads directory entries from fd and writes them into buf.
  8. func ReadDirent(fd int, buf []byte) (n int, err error) {
  9. // Final argument is (basep *uintptr) and the syscall doesn't take nil.
  10. // 64 bits should be enough. (32 bits isn't even on 386). Since the
  11. // actual system call is getdirentries64, 64 is a good guess.
  12. // TODO(rsc): Can we use a single global basep for all calls?
  13. var base = (*uintptr)(unsafe.Pointer(new(uint64)))
  14. return Getdirentries(fd, buf, base)
  15. }
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