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 

     5 // +build darwin,go1.12,!go1.13

     6 

     7 package unix

     8 

     9 import (

    10 	"unsafe"

    11 )

    12 

    13 func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) {

    14 	// To implement this using libSystem we'd need syscall_syscallPtr for

    15 	// fdopendir. However, syscallPtr was only added in Go 1.13, so we fall

    16 	// back to raw syscalls for this func on Go 1.12.

    17 	var p unsafe.Pointer

    18 	if len(buf) > 0 {

    19 		p = unsafe.Pointer(&buf[0])

    20 	} else {

    21 		p = unsafe.Pointer(&_zero)

    22 	}

    23 	r0, _, e1 := Syscall6(SYS_GETDIRENTRIES64, uintptr(fd), uintptr(p), uintptr(len(buf)), uintptr(unsafe.Pointer(basep)), 0, 0)

    24 	n = int(r0)

    25 	if e1 != 0 {

    26 		return n, errnoErr(e1)

    27 	}

    28 	return n, nil

    29 }