Update dependencies

vendor/github.com/digitalocean/go-smbios/smbios/stream_linux.go

@@ -0,0 +1,65 @@
+// Copyright 2017-2018 DigitalOcean.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//+build linux
+
+package smbios
+
+import (
+	"io"
+	"os"
+)
+
+const (
+	// sysfs locations for SMBIOS information.
+	sysfsDMI        = "/sys/firmware/dmi/tables/DMI"
+	sysfsEntryPoint = "/sys/firmware/dmi/tables/smbios_entry_point"
+)
+
+// stream opens the SMBIOS entry point and an SMBIOS structure stream.
+func stream() (io.ReadCloser, EntryPoint, error) {
+	// First, check for the sysfs location present in modern kernels.
+	_, err := os.Stat(sysfsEntryPoint)
+	switch {
+	case err == nil:
+		return sysfsStream(sysfsEntryPoint, sysfsDMI)
+	case os.IsNotExist(err):
+		// Fall back to the standard UNIX-like system method.
+		return devMemStream()
+	default:
+		return nil, nil, err
+	}
+}
+
+// sysfsStream reads the SMBIOS entry point and structure stream from
+// two files; usually the modern sysfs locations.
+func sysfsStream(entryPoint, dmi string) (io.ReadCloser, EntryPoint, error) {
+	epf, err := os.Open(entryPoint)
+	if err != nil {
+		return nil, nil, err
+	}
+	defer epf.Close()
+
+	ep, err := ParseEntryPoint(epf)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	sf, err := os.Open(dmi)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	return sf, ep, nil
+}