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//go:build darwin && go1.12 && !go1.13
6// +build darwin,go1.12,!go1.13
7
8package unix
9
10import (
11	"unsafe"
12)
13
14const _SYS_GETDIRENTRIES64 = 344
15
16func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) {
17	// To implement this using libSystem we'd need syscall_syscallPtr for
18	// fdopendir. However, syscallPtr was only added in Go 1.13, so we fall
19	// back to raw syscalls for this func on Go 1.12.
20	var p unsafe.Pointer
21	if len(buf) > 0 {
22		p = unsafe.Pointer(&buf[0])
23	} else {
24		p = unsafe.Pointer(&_zero)
25	}
26	r0, _, e1 := Syscall6(_SYS_GETDIRENTRIES64, uintptr(fd), uintptr(p), uintptr(len(buf)), uintptr(unsafe.Pointer(basep)), 0, 0)
27	n = int(r0)
28	if e1 != 0 {
29		return n, errnoErr(e1)
30	}
31	return n, nil
32}
33