syscall_bsd_test.go

Documentation: syscall

		 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  // +build darwin dragonfly freebsd openbsd
		 7  
		 8  package syscall_test
		 9  
		10  import (
		11  	"os/exec"
		12  	"syscall"
		13  	"testing"
		14  )
		15  
		16  const MNT_WAIT = 1
		17  const MNT_NOWAIT = 2
		18  
		19  func TestGetfsstat(t *testing.T) {
		20  	const flags = MNT_NOWAIT // see Issue 16937
		21  	n, err := syscall.Getfsstat(nil, flags)
		22  	t.Logf("Getfsstat(nil, %d) = (%v, %v)", flags, n, err)
		23  	if err != nil {
		24  		t.Fatal(err)
		25  	}
		26  
		27  	data := make([]syscall.Statfs_t, n)
		28  	n2, err := syscall.Getfsstat(data, flags)
		29  	t.Logf("Getfsstat([]syscall.Statfs_t, %d) = (%v, %v)", flags, n2, err)
		30  	if err != nil {
		31  		t.Fatal(err)
		32  	}
		33  	if n != n2 {
		34  		t.Errorf("Getfsstat(nil) = %d, but subsequent Getfsstat(slice) = %d", n, n2)
		35  	}
		36  	for i, stat := range data {
		37  		if stat == (syscall.Statfs_t{}) {
		38  			t.Errorf("index %v is an empty Statfs_t struct", i)
		39  		}
		40  	}
		41  	if t.Failed() {
		42  		for i, stat := range data[:n2] {
		43  			t.Logf("data[%v] = %+v", i, stat)
		44  		}
		45  		mount, err := exec.Command("mount").CombinedOutput()
		46  		if err != nil {
		47  			t.Logf("mount: %v\n%s", err, mount)
		48  		} else {
		49  			t.Logf("mount: %s", mount)
		50  		}
		51  	}
		52  }
		53
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