1// Copyright 2014 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 || dragonfly || freebsd || openbsd
6
7package syscall_test
8
9import (
10	"os/exec"
11	"syscall"
12	"testing"
13)
14
15const MNT_WAIT = 1
16const MNT_NOWAIT = 2
17
18func TestGetfsstat(t *testing.T) {
19	const flags = MNT_NOWAIT // see Issue 16937
20	n, err := syscall.Getfsstat(nil, flags)
21	t.Logf("Getfsstat(nil, %d) = (%v, %v)", flags, n, err)
22	if err != nil {
23		t.Fatal(err)
24	}
25
26	data := make([]syscall.Statfs_t, n)
27	n2, err := syscall.Getfsstat(data, flags)
28	t.Logf("Getfsstat([]syscall.Statfs_t, %d) = (%v, %v)", flags, n2, err)
29	if err != nil {
30		t.Fatal(err)
31	}
32	if n != n2 {
33		t.Errorf("Getfsstat(nil) = %d, but subsequent Getfsstat(slice) = %d", n, n2)
34	}
35	for i, stat := range data {
36		if stat == (syscall.Statfs_t{}) {
37			t.Errorf("index %v is an empty Statfs_t struct", i)
38		}
39	}
40	if t.Failed() {
41		for i, stat := range data[:n2] {
42			t.Logf("data[%v] = %+v", i, stat)
43		}
44		mount, err := exec.Command("mount").CombinedOutput()
45		if err != nil {
46			t.Logf("mount: %v\n%s", err, mount)
47		} else {
48			t.Logf("mount: %s", mount)
49		}
50	}
51}
52