Update/delete vendor files

Refreshed / updated vendor dependencies

Tested with "make".

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

gateway/vendor/github.com/prometheus/procfs/fs.go

@@ -1,46 +1,43 @@
+// Copyright 2018 The Prometheus Authors
+// 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.
+
 package procfs
 
 import (
-	"fmt"
-	"os"
-	"path"
-
-	"github.com/prometheus/procfs/xfs"
+	"github.com/prometheus/procfs/internal/fs"
 )
 
-// FS represents the pseudo-filesystem proc, which provides an interface to
+// FS represents the pseudo-filesystem sys, which provides an interface to
 // kernel data structures.
-type FS string
+type FS struct {
+	proc fs.FS
+}
 
 // DefaultMountPoint is the common mount point of the proc filesystem.
-const DefaultMountPoint = "/proc"
+const DefaultMountPoint = fs.DefaultProcMountPoint
 
-// NewFS returns a new FS mounted under the given mountPoint. It will error
-// if the mount point can't be read.
+// NewDefaultFS returns a new proc FS mounted under the default proc mountPoint.
+// It will error if the mount point directory can't be read or is a file.
+func NewDefaultFS() (FS, error) {
+	return NewFS(DefaultMountPoint)
+}
+
+// NewFS returns a new proc FS mounted under the given proc mountPoint. It will error
+// if the mount point directory can't be read or is a file.
 func NewFS(mountPoint string) (FS, error) {
-	info, err := os.Stat(mountPoint)
+	fs, err := fs.NewFS(mountPoint)
 	if err != nil {
-		return "", fmt.Errorf("could not read %s: %s", mountPoint, err)
+		return FS{}, err
 	}
-	if !info.IsDir() {
-		return "", fmt.Errorf("mount point %s is not a directory", mountPoint)
-	}
-
-	return FS(mountPoint), nil
-}
-
-// Path returns the path of the given subsystem relative to the procfs root.
-func (fs FS) Path(p ...string) string {
-	return path.Join(append([]string{string(fs)}, p...)...)
-}
-
-// XFSStats retrieves XFS filesystem runtime statistics.
-func (fs FS) XFSStats() (*xfs.Stats, error) {
-	f, err := os.Open(fs.Path("fs/xfs/stat"))
-	if err != nil {
-		return nil, err
-	}
-	defer f.Close()
-
-	return xfs.ParseStats(f)
+	return FS{fs}, nil
 }