replace pkg/util/io with k8s.io/utils/io

pkg/controller/.import-restrictions

@@ -321,8 +321,7 @@
         "k8s.io/kubernetes/pkg/util/resizefs",
         "k8s.io/kubernetes/pkg/util/version",
         "k8s.io/kubernetes/pkg/apis/apps",
-        "k8s.io/kubernetes/pkg/version",
-        "k8s.io/kubernetes/pkg/util/io"
+        "k8s.io/kubernetes/pkg/version"
       ]
     },
     {
@@ -343,6 +342,8 @@
         "k8s.io/metrics/pkg/client/custom_metrics/fake",
         "k8s.io/metrics/pkg/client/external_metrics",
         "k8s.io/metrics/pkg/client/external_metrics/fake",
+        "k8s.io/utils/nsenter",
+        "k8s.io/utils/io",
         "k8s.io/utils/pointer",
         "k8s.io/utils/exec"
       ]

pkg/kubectl/.import-restrictions

@@ -131,7 +131,6 @@
                 "k8s.io/kubernetes/pkg/util/goroutinemap",
                 "k8s.io/kubernetes/pkg/util/hash",
                 "k8s.io/kubernetes/pkg/util/interrupt",
-                "k8s.io/kubernetes/pkg/util/io",
                 "k8s.io/kubernetes/pkg/util/labels",
                 "k8s.io/kubernetes/pkg/util/metrics",
                 "k8s.io/kubernetes/pkg/util/mount",
@@ -145,6 +144,8 @@
                 "k8s.io/kubernetes/pkg/version/prometheus",
                 "k8s.io/kubernetes/pkg/volume",
                 "k8s.io/kubernetes/pkg/volume/util",
+                "k8s.io/utils/nsenter",
+                "k8s.io/utils/io",
                 "k8s.io/utils/pointer"
 		],
 		"ForbiddenPrefixes": []

pkg/util/BUILD

@@ -28,7 +28,6 @@ filegroup(
         "//pkg/util/hash:all-srcs",
         "//pkg/util/initsystem:all-srcs",
         "//pkg/util/interrupt:all-srcs",
-        "//pkg/util/io:all-srcs",
         "//pkg/util/ipconfig:all-srcs",
         "//pkg/util/ipset:all-srcs",
         "//pkg/util/iptables:all-srcs",

pkg/util/io/BUILD

-package(default_visibility = ["//visibility:public"])
-
-load(
-    "@io_bazel_rules_go//go:def.bzl",
-    "go_library",
-)
-
-go_library(
-    name = "go_default_library",
-    srcs = ["consistentread.go"],
-    importpath = "k8s.io/kubernetes/pkg/util/io",
-)
-
-filegroup(
-    name = "package-srcs",
-    srcs = glob(["**"]),
-    tags = ["automanaged"],
-    visibility = ["//visibility:private"],
-)
-
-filegroup(
-    name = "all-srcs",
-    srcs = [":package-srcs"],
-    tags = ["automanaged"],
-)

pkg/util/io/consistentread.go

-/*
-Copyright 2017 The Kubernetes 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 io
-
-import (
-	"bytes"
-	"fmt"
-	"io/ioutil"
-)
-
-// ConsistentRead repeatedly reads a file until it gets the same content twice.
-// This is useful when reading files in /proc that are larger than page size
-// and kernel may modify them between individual read() syscalls.
-func ConsistentRead(filename string, attempts int) ([]byte, error) {
-	oldContent, err := ioutil.ReadFile(filename)
-	if err != nil {
-		return nil, err
-	}
-	for i := 0; i < attempts; i++ {
-		newContent, err := ioutil.ReadFile(filename)
-		if err != nil {
-			return nil, err
-		}
-		if bytes.Compare(oldContent, newContent) == 0 {
-			return newContent, nil
-		}
-		// Files are different, continue reading
-		oldContent = newContent
-	}
-	return nil, fmt.Errorf("could not get consistent content of %s after %d attempts", filename, attempts)
-}

pkg/util/mount/BUILD

@@ -36,10 +36,10 @@ go_library(
         ],
         "@io_bazel_rules_go//go/platform:linux": [
             "//pkg/util/file:go_default_library",
-            "//pkg/util/io:go_default_library",
             "//pkg/util/nsenter:go_default_library",
             "//staging/src/k8s.io/apimachinery/pkg/util/sets:go_default_library",
             "//vendor/golang.org/x/sys/unix:go_default_library",
+            "//vendor/k8s.io/utils/io:go_default_library",
         ],
         "@io_bazel_rules_go//go/platform:nacl": [
             "//pkg/util/nsenter:go_default_library",

pkg/util/mount/mount_linux.go

@@ -34,8 +34,8 @@ import (
 	"k8s.io/apimachinery/pkg/util/sets"
 	"k8s.io/klog"
 	utilfile "k8s.io/kubernetes/pkg/util/file"
-	utilio "k8s.io/kubernetes/pkg/util/io"
 	utilexec "k8s.io/utils/exec"
+	utilio "k8s.io/utils/io"
 )
 
 const (