syscall: fix Getfsstat() for BSD
The buffer length should be the size in bytes
instead of the number of structs.
Fixes #6588.
LGTM=mikioh.mikioh
R=golang-codereviews, mikioh.mikioh, adg
CC=golang-codereviews
https://golang.org/cl/84830043
diff --git a/src/pkg/syscall/syscall_bsd_test.go b/src/pkg/syscall/syscall_bsd_test.go
new file mode 100644
index 0000000..c2ea089d
--- /dev/null
+++ b/src/pkg/syscall/syscall_bsd_test.go
@@ -0,0 +1,34 @@
+// 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 (
+ "syscall"
+ "testing"
+)
+
+const MNT_WAIT = 1
+
+func TestGetfsstat(t *testing.T) {
+ n, err := syscall.Getfsstat(nil, MNT_WAIT)
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ data := make([]syscall.Statfs_t, n)
+ n, err = syscall.Getfsstat(data, MNT_WAIT)
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ empty := syscall.Statfs_t{}
+ for _, stat := range data {
+ if stat == empty {
+ t.Fatal("an empty Statfs_t struct was returned")
+ }
+ }
+}
