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Source file src/syscall/syscall_bsd_test.go

Documentation: syscall

  // Copyright 2014 The Go Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style
  // license that can be found in the LICENSE file.
  
  // +build darwin dragonfly freebsd openbsd
  
  package syscall_test
  
  import (
  	"os/exec"
  	"syscall"
  	"testing"
  )
  
  const MNT_WAIT = 1
  const MNT_NOWAIT = 2
  
  func TestGetfsstat(t *testing.T) {
  	const flags = MNT_NOWAIT // see Issue 16937
  	n, err := syscall.Getfsstat(nil, flags)
  	t.Logf("Getfsstat(nil, %d) = (%v, %v)", flags, n, err)
  	if err != nil {
  		t.Fatal(err)
  	}
  
  	data := make([]syscall.Statfs_t, n)
  	n2, err := syscall.Getfsstat(data, flags)
  	t.Logf("Getfsstat([]syscall.Statfs_t, %d) = (%v, %v)", flags, n2, err)
  	if err != nil {
  		t.Fatal(err)
  	}
  	if n != n2 {
  		t.Errorf("Getfsstat(nil) = %d, but subsequent Getfsstat(slice) = %d", n, n2)
  	}
  	for i, stat := range data {
  		if stat == (syscall.Statfs_t{}) {
  			t.Errorf("index %v is an empty Statfs_t struct", i)
  		}
  	}
  	if t.Failed() {
  		for i, stat := range data[:n2] {
  			t.Logf("data[%v] = %+v", i, stat)
  		}
  		mount, err := exec.Command("mount").CombinedOutput()
  		if err != nil {
  			t.Logf("mount: %v\n%s", err, mount)
  		} else {
  			t.Logf("mount: %s", mount)
  		}
  	}
  }
  

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