Merge pull request #889 from marquiz/fixes/verify

Lint fixes

Dockerfile_generator

@@ -1,4 +1,5 @@
-FROM golang:1.18-buster as builder
+ARG BUILDER_IMAGE
+FROM ${BUILDER_IMAGE} as builder
 
 # Install tools
 RUN go install github.com/vektra/mockery/v2@v2.13.0 && \

Makefile

@@ -127,7 +127,10 @@ templates:
 	@rm nfd-worker.conf.tmp
 
 .generator.image.stamp: Dockerfile_generator
-	$(IMAGE_BUILD_CMD) -t nfd-generator -f Dockerfile_generator .
+	$(IMAGE_BUILD_CMD) \
+	    --build-arg BUILDER_IMAGE=$(BUILDER_IMAGE) \
+	    -t nfd-generator \
+	    -f Dockerfile_generator .
 
 generate: .generator.image.stamp
 	$(CONTAINER_RUN_CMD) --rm \

deployment/base/nfd-crds/nodefeaturerule-crd.yaml

@@ -78,8 +78,8 @@ spec:
                                       the input and an array of values that the operator
                                       evaluates the input against. \n NB: CreateMatchExpression
                                       or MustCreateMatchExpression() should be used
-                                      for creating new instances. NB: Validate() must
+                                      for creating new instances. \n NB: Validate()
-                                      be called if Op or Value fields are modified
+                                      must be called if Op or Value fields are modified
                                       or if a new instance is created from scratch
                                       without using the helper functions."
                                     properties:
@@ -144,8 +144,8 @@ spec:
                                 and an array of values that the operator evaluates
                                 the input against. \n NB: CreateMatchExpression or
                                 MustCreateMatchExpression() should be used for creating
-                                new instances. NB: Validate() must be called if Op
+                                new instances. \n NB: Validate() must be called if
-                                or Value fields are modified or if a new instance
+                                Op or Value fields are modified or if a new instance
                                 is created from scratch without using the helper functions."
                               properties:
                                 op:

deployment/helm/node-feature-discovery/crds/nodefeaturerule-crd.yaml

@@ -78,8 +78,8 @@ spec:
                                       the input and an array of values that the operator
                                       evaluates the input against. \n NB: CreateMatchExpression
                                       or MustCreateMatchExpression() should be used
-                                      for creating new instances. NB: Validate() must
+                                      for creating new instances. \n NB: Validate()
-                                      be called if Op or Value fields are modified
+                                      must be called if Op or Value fields are modified
                                       or if a new instance is created from scratch
                                       without using the helper functions."
                                     properties:
@@ -144,8 +144,8 @@ spec:
                                 and an array of values that the operator evaluates
                                 the input against. \n NB: CreateMatchExpression or
                                 MustCreateMatchExpression() should be used for creating
-                                new instances. NB: Validate() must be called if Op
+                                new instances. \n NB: Validate() must be called if
-                                or Value fields are modified or if a new instance
+                                Op or Value fields are modified or if a new instance
                                 is created from scratch without using the helper functions."
                               properties:
                                 op:

pkg/apis/nfd/v1alpha1/expression.go

@@ -490,6 +490,7 @@ func (in *valueRegexpCache) DeepCopy() *valueRegexpCache {
 }
 
 // DeepCopyInto is a stub to augment the auto-generated code
+//
 //nolint:staticcheck  // re.Copy is deprecated but we want to use  it here
 func (in *valueRegexpCache) DeepCopyInto(out *valueRegexpCache) {
 	*out = make(valueRegexpCache, len(*in))

pkg/apis/nfd/v1alpha1/types.go

@@ -121,6 +121,7 @@ type MatchExpressionSet map[string]*MatchExpression
 //
 // NB: CreateMatchExpression or MustCreateMatchExpression() should be used for
 // creating new instances.
+//
 // NB: Validate() must be called if Op or Value fields are modified or if a new
 // instance is created from scratch without using the helper functions.
 type MatchExpression struct {

pkg/kubeconf/kubelet_config_file.go

@@ -17,7 +17,7 @@ limitations under the License.
 package kubeconf
 
 import (
-	"io/ioutil"
+	"os"
 
 	"github.com/ghodss/yaml"
 
@@ -26,7 +26,7 @@ import (
 
 // GetKubeletConfigFromLocalFile returns KubeletConfiguration loaded from the node local config
 func GetKubeletConfigFromLocalFile(kubeletConfigPath string) (*kubeletconfigv1beta1.KubeletConfiguration, error) {
-	kubeletBytes, err := ioutil.ReadFile(kubeletConfigPath)
+	kubeletBytes, err := os.ReadFile(kubeletConfigPath)
 	if err != nil {
 		return nil, err
 	}

pkg/nfd-client/base.go

@@ -20,7 +20,6 @@ import (
 	"crypto/tls"
 	"crypto/x509"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"time"
 
@@ -105,7 +104,7 @@ func (w *NfdBaseClient) Connect() error {
 			return fmt.Errorf("failed to load client certificate: %v", err)
 		}
 		// Load CA cert for server cert verification
-		caCert, err := ioutil.ReadFile(w.args.CaFile)
+		caCert, err := os.ReadFile(w.args.CaFile)
 		if err != nil {
 			return fmt.Errorf("failed to read root certificate file: %v", err)
 		}

pkg/nfd-client/worker/nfd-worker-internal_test.go

@@ -17,7 +17,6 @@ limitations under the License.
 package worker
 
 import (
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"regexp"
@@ -129,7 +128,7 @@ func TestConfigParse(t *testing.T) {
 			})
 		})
 		// Create a temporary config file
-		f, err := ioutil.TempFile("", "nfd-test-")
+		f, err := os.CreateTemp("", "nfd-test-")
 		defer os.Remove(f.Name())
 		So(err, ShouldBeNil)
 		_, err = f.WriteString(`
@@ -197,7 +196,7 @@ sources:
 
 func TestDynamicConfig(t *testing.T) {
 	Convey("When running nfd-worker", t, func() {
-		tmpDir, err := ioutil.TempDir("", "*.nfd-test")
+		tmpDir, err := os.MkdirTemp("", "*.nfd-test")
 		So(err, ShouldBeNil)
 		defer os.RemoveAll(tmpDir)
 

pkg/nfd-client/worker/nfd-worker.go

@@ -19,7 +19,6 @@ package worker
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"regexp"
@@ -401,7 +400,7 @@ func (w *nfdWorker) configure(filepath string, overrides string) error {
 
 	// Try to read and parse config file
 	if filepath != "" {
-		data, err := ioutil.ReadFile(filepath)
+		data, err := os.ReadFile(filepath)
 		if err != nil {
 			if os.IsNotExist(err) {
 				klog.Infof("config file %q not found, using defaults", filepath)

pkg/utils/memory_resources.go

@@ -18,7 +18,7 @@ package utils
 
 import (
 	"fmt"
-	"io/ioutil"
+	"os"
 	"path/filepath"
 	"strconv"
 	"strings"
@@ -44,7 +44,7 @@ type MemoryResourceInfo map[v1.ResourceName]int64
 
 // GetNumaMemoryResources returns total amount of memory and hugepages under NUMA nodes
 func GetNumaMemoryResources() (NumaMemoryResources, error) {
-	nodes, err := ioutil.ReadDir(sysBusNodeBasepath)
+	nodes, err := os.ReadDir(sysBusNodeBasepath)
 	if err != nil {
 		return nil, err
 	}
@@ -82,7 +82,7 @@ func GetNumaMemoryResources() (NumaMemoryResources, error) {
 }
 
 func getHugepagesBytes(path string) (MemoryResourceInfo, error) {
-	entries, err := ioutil.ReadDir(path)
+	entries, err := os.ReadDir(path)
 	if err != nil {
 		return nil, err
 	}
@@ -101,7 +101,7 @@ func getHugepagesBytes(path string) (MemoryResourceInfo, error) {
 			return nil, err
 		}
 
-		data, err := ioutil.ReadFile(filepath.Join(path, entry.Name(), "nr_hugepages"))
+		data, err := os.ReadFile(filepath.Join(path, entry.Name(), "nr_hugepages"))
 		if err != nil {
 			return nil, err
 		}
@@ -120,7 +120,7 @@ func getHugepagesBytes(path string) (MemoryResourceInfo, error) {
 }
 
 func readTotalMemoryFromMeminfo(path string) (int64, error) {
-	data, err := ioutil.ReadFile(path)
+	data, err := os.ReadFile(path)
 	if err != nil {
 		return -1, err
 	}

pkg/utils/tls.go

@@ -20,7 +20,7 @@ import (
 	"crypto/tls"
 	"crypto/x509"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"sync"
 )
 
@@ -50,7 +50,7 @@ func (c *TlsConfig) UpdateConfig(certFile, keyFile, caFile string) error {
 		return fmt.Errorf("failed to load server certificate: %v", err)
 	}
 	// Load CA cert for client cert verification
-	caCert, err := ioutil.ReadFile(caFile)
+	caCert, err := os.ReadFile(caFile)
 	if err != nil {
 		return fmt.Errorf("failed to read root certificate file: %v", err)
 	}

scripts/test-infra/verify.sh

@@ -2,7 +2,7 @@
 
 # Install deps
 gobinpath="$(go env GOPATH)/bin"
-curl -sfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh| sh -s -- -b "$gobinpath" v1.45.2
+curl -sfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh| sh -s -- -b "$gobinpath" v1.49.0
 export PATH=$PATH:$(go env GOPATH)/bin
 
 curl -sfL https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3 | bash -s -- --version v3.7.1
@@ -12,8 +12,13 @@ curl -L https://dl.k8s.io/release/v1.22.1/bin/linux/amd64/kubectl -o "$kubectl"
 chmod 755 "$kubectl"
 
 # Run verify steps
+echo "Checking gofmt"
 make gofmt-verify
+
+echo "Running golangci-lint"
 make ci-lint
+
+echo "Running Helm lint"
 make helm-lint
 
 # Check that repo is clean

source/cpu/cpu.go

@@ -17,7 +17,7 @@ limitations under the License.
 package cpu
 
 import (
-	"io/ioutil"
+	"os"
 	"strconv"
 
 	"k8s.io/klog/v2"
@@ -282,14 +282,14 @@ func discoverTopology() map[string]string {
 // Check if any (online) CPUs have thread siblings
 func haveThreadSiblings() (bool, error) {
 
-	files, err := ioutil.ReadDir(source.SysfsDir.Path("bus/cpu/devices"))
+	files, err := os.ReadDir(source.SysfsDir.Path("bus/cpu/devices"))
 	if err != nil {
 		return false, err
 	}
 
 	for _, file := range files {
 		// Try to read siblings from topology
-		siblings, err := ioutil.ReadFile(source.SysfsDir.Path("bus/cpu/devices", file.Name(), "topology/thread_siblings_list"))
+		siblings, err := os.ReadFile(source.SysfsDir.Path("bus/cpu/devices", file.Name(), "topology/thread_siblings_list"))
 		if err != nil {
 			return false, err
 		}

source/cpu/cstate_amd64.go

@@ -18,7 +18,6 @@ package cpu
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strconv"
@@ -45,7 +44,7 @@ func detectCstate() (map[string]string, error) {
 	}
 
 	// When the intel_idle driver is in use (default), check setting of max_cstates
-	driver, err := ioutil.ReadFile(filepath.Join(cpuidleDir, "current_driver"))
+	driver, err := os.ReadFile(filepath.Join(cpuidleDir, "current_driver"))
 	if err != nil {
 		return cstate, fmt.Errorf("cannot get driver for cpuidle: %w", err)
 	}
@@ -56,7 +55,7 @@ func detectCstate() (map[string]string, error) {
 		return cstate, nil
 	}
 
-	data, err := ioutil.ReadFile(source.SysfsDir.Path("module/intel_idle/parameters/max_cstate"))
+	data, err := os.ReadFile(source.SysfsDir.Path("module/intel_idle/parameters/max_cstate"))
 	if err != nil {
 		return cstate, fmt.Errorf("cannot determine cstate from max_cstates: %w", err)
 	}

source/cpu/power_amd64.go

@@ -18,7 +18,6 @@ package cpu
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"strconv"
 	"strings"
@@ -52,7 +51,7 @@ func discoverSSTBF() (bool, error) {
 	nominalBaseFrequency := int(freqInfo.EAX)
 
 	// Loop over all CPUs in the system
-	files, err := ioutil.ReadDir(source.SysfsDir.Path("bus/cpu/devices"))
+	files, err := os.ReadDir(source.SysfsDir.Path("bus/cpu/devices"))
 
 	if err != nil {
 		return false, err
@@ -60,7 +59,7 @@ func discoverSSTBF() (bool, error) {
 	for _, file := range files {
 		// Try to read effective base frequency of each cpu in the system
 		filePath := source.SysfsDir.Path("bus/cpu/devices", file.Name(), "cpufreq/base_frequency")
-		data, err := ioutil.ReadFile(filePath)
+		data, err := os.ReadFile(filePath)
 		if os.IsNotExist(err) {
 			// Ignore missing file and continue to check other CPUs
 			continue

source/cpu/pstate_amd64.go

@@ -18,7 +18,6 @@ package cpu
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -42,7 +41,7 @@ func detectPstate() (map[string]string, error) {
 	}
 
 	// Get global pstate status
-	data, err := ioutil.ReadFile(filepath.Join(pstateDir, "status"))
+	data, err := os.ReadFile(filepath.Join(pstateDir, "status"))
 	if err != nil {
 		return nil, fmt.Errorf("could not read pstate status: %w", err)
 	}
@@ -55,7 +54,7 @@ func detectPstate() (map[string]string, error) {
 	features := map[string]string{"status": status}
 
 	// Check turbo boost
-	bytes, err := ioutil.ReadFile(filepath.Join(pstateDir, "no_turbo"))
+	bytes, err := os.ReadFile(filepath.Join(pstateDir, "no_turbo"))
 	if err != nil {
 		klog.Errorf("can't detect whether turbo boost is enabled: %s", err.Error())
 	} else {
@@ -72,7 +71,7 @@ func detectPstate() (map[string]string, error) {
 
 	// Determine scaling governor that is being used
 	cpufreqDir := filepath.Join(sysfsBase, "cpufreq")
-	policies, err := ioutil.ReadDir(cpufreqDir)
+	policies, err := os.ReadDir(cpufreqDir)
 	if err != nil {
 		klog.Errorf("failed to read cpufreq directory: %s", err.Error())
 		return features, nil
@@ -81,7 +80,7 @@ func detectPstate() (map[string]string, error) {
 	scaling := ""
 	for _, policy := range policies {
 		// Ensure at least one cpu is using this policy
-		cpus, err := ioutil.ReadFile(filepath.Join(cpufreqDir, policy.Name(), "affected_cpus"))
+		cpus, err := os.ReadFile(filepath.Join(cpufreqDir, policy.Name(), "affected_cpus"))
 		if err != nil {
 			klog.Errorf("could not read cpufreq policy %s affected_cpus", policy.Name())
 			continue
@@ -91,7 +90,7 @@ func detectPstate() (map[string]string, error) {
 			continue
 		}
 
-		data, err := ioutil.ReadFile(filepath.Join(cpufreqDir, policy.Name(), "scaling_governor"))
+		data, err := os.ReadFile(filepath.Join(cpufreqDir, policy.Name(), "scaling_governor"))
 		if err != nil {
 			klog.Errorf("could not read cpufreq policy %s scaling_governor", policy.Name())
 			continue

source/custom/directory_features.go

@@ -17,7 +17,6 @@ limitations under the License.
 package custom
 
 import (
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -41,7 +40,7 @@ func readDir(dirName string, recursive bool) []CustomRule {
 	features := make([]CustomRule, 0)
 
 	klog.V(1).Infof("getting files in %s", dirName)
-	files, err := ioutil.ReadDir(dirName)
+	files, err := os.ReadDir(dirName)
 	if err != nil {
 		if os.IsNotExist(err) {
 			klog.V(1).Infof("custom config directory %q does not exist", dirName)
@@ -69,7 +68,7 @@ func readDir(dirName string, recursive bool) []CustomRule {
 		}
 		klog.V(2).Infof("processing file %q", fileName)
 
-		bytes, err := ioutil.ReadFile(fileName)
+		bytes, err := os.ReadFile(fileName)
 		if err != nil {
 			klog.Errorf("could not read custom config file %q, %v", fileName, err)
 			continue

source/kernel/kconfig.go

@@ -20,7 +20,7 @@ import (
 	"bytes"
 	"compress/gzip"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"os"
 	"path/filepath"
 	"strings"
@@ -44,7 +44,7 @@ func readKconfigGzip(filename string) ([]byte, error) {
 	}
 	defer r.Close()
 
-	return ioutil.ReadAll(r)
+	return io.ReadAll(r)
 }
 
 // parseKconfig reads Linux kernel configuration and returns all set options
@@ -88,7 +88,7 @@ func parseKconfig(configPath string) (realKconfig, legacyKconfig map[string]stri
 					break
 				}
 			} else {
-				if raw, err = ioutil.ReadFile(path); err == nil {
+				if raw, err = os.ReadFile(path); err == nil {
 					break
 				}
 			}

source/kernel/modules.go

@@ -18,14 +18,14 @@ package kernel
 
 import (
 	"fmt"
-	"io/ioutil"
+	"os"
 	"strings"
 )
 
 const kmodProcfsPath = "/proc/modules"
 
 func getLoadedModules() ([]string, error) {
-	out, err := ioutil.ReadFile(kmodProcfsPath)
+	out, err := os.ReadFile(kmodProcfsPath)
 	if err != nil {
 		return nil, fmt.Errorf("failed to read file %s: %s", kmodProcfsPath, err.Error())
 	}

source/kernel/selinux.go

@@ -18,7 +18,6 @@ package kernel
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
@@ -40,7 +39,7 @@ func SelinuxEnabled() (bool, error) {
 		return false, nil
 	}
 
-	status, err := ioutil.ReadFile(filepath.Join(selinuxBase, "enforce"))
+	status, err := os.ReadFile(filepath.Join(selinuxBase, "enforce"))
 	if err != nil {
 		return false, fmt.Errorf("failed to detect the status of selinux: %w", err)
 	}

source/kernel/version.go

@@ -17,7 +17,7 @@ limitations under the License.
 package kernel
 
 import (
-	"io/ioutil"
+	"os"
 	"regexp"
 	"strings"
 )
@@ -53,7 +53,7 @@ func parseVersion() (map[string]string, error) {
 }
 
 func getVersion() (string, error) {
-	unameRaw, err := ioutil.ReadFile("/proc/sys/kernel/osrelease")
+	unameRaw, err := os.ReadFile("/proc/sys/kernel/osrelease")
 	if err != nil {
 		return "", err
 	}

source/local/local.go

@@ -19,7 +19,6 @@ package local
 import (
 	"bytes"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -135,7 +134,7 @@ func parseFeatures(lines [][]byte) map[string]string {
 func getFeaturesFromHooks() (map[string]string, error) {
 	features := make(map[string]string)
 
-	files, err := ioutil.ReadDir(hookDir)
+	files, err := os.ReadDir(hookDir)
 	if err != nil {
 		if os.IsNotExist(err) {
 			klog.Infof("hook directory %v does not exist", hookDir)
@@ -212,7 +211,7 @@ func runHook(file string) ([][]byte, error) {
 func getFeaturesFromFiles() (map[string]string, error) {
 	features := make(map[string]string)
 
-	files, err := ioutil.ReadDir(featureFilesDir)
+	files, err := os.ReadDir(featureFilesDir)
 	if err != nil {
 		if os.IsNotExist(err) {
 			klog.Infof("features directory %v does not exist", featureFilesDir)
@@ -256,7 +255,7 @@ func getFileContent(fileName string) ([][]byte, error) {
 	}
 
 	if filestat.Mode().IsRegular() {
-		fileContent, err := ioutil.ReadFile(path)
+		fileContent, err := os.ReadFile(path)
 
 		// Do not return any lines if an error occurred
 		if err != nil {

source/memory/memory.go

@@ -18,7 +18,6 @@ package memory
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strconv"
@@ -117,7 +116,7 @@ func (s *memorySource) GetFeatures() *feature.DomainFeatures {
 func detectNuma() (map[string]string, error) {
 	sysfsBasePath := source.SysfsDir.Path("bus/node/devices")
 
-	nodes, err := ioutil.ReadDir(sysfsBasePath)
+	nodes, err := os.ReadDir(sysfsBasePath)
 	if err != nil {
 		return nil, fmt.Errorf("failed to list numa nodes: %w", err)
 	}
@@ -133,7 +132,7 @@ func detectNv() ([]feature.InstanceFeature, error) {
 	sysfsBasePath := source.SysfsDir.Path("bus/nd/devices")
 	info := make([]feature.InstanceFeature, 0)
 
-	devices, err := ioutil.ReadDir(sysfsBasePath)
+	devices, err := os.ReadDir(sysfsBasePath)
 	if os.IsNotExist(err) {
 		klog.V(1).Info("No NVDIMM devices present")
 		return info, nil
@@ -156,7 +155,7 @@ var ndDevAttrs = []string{"devtype", "mode"}
 func readNdDeviceInfo(path string) feature.InstanceFeature {
 	attrs := map[string]string{"name": filepath.Base(path)}
 	for _, attrName := range ndDevAttrs {
-		data, err := ioutil.ReadFile(filepath.Join(path, attrName))
+		data, err := os.ReadFile(filepath.Join(path, attrName))
 		if err != nil {
 			klog.V(3).Infof("failed to read nd device attribute %s: %w", attrName, err)
 			continue

source/network/network.go

@@ -18,7 +18,6 @@ package network
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strconv"
@@ -115,7 +114,7 @@ func (s *networkSource) GetFeatures() *feature.DomainFeatures {
 func detectNetDevices() ([]feature.InstanceFeature, error) {
 	sysfsBasePath := source.SysfsDir.Path(sysfsBaseDir)
 
-	ifaces, err := ioutil.ReadDir(sysfsBasePath)
+	ifaces, err := os.ReadDir(sysfsBasePath)
 	if err != nil {
 		return nil, fmt.Errorf("failed to list network interfaces: %w", err)
 	}
@@ -137,7 +136,7 @@ func detectNetDevices() ([]feature.InstanceFeature, error) {
 func readIfaceInfo(path string) feature.InstanceFeature {
 	attrs := map[string]string{"name": filepath.Base(path)}
 	for _, attrName := range ifaceAttrs {
-		data, err := ioutil.ReadFile(filepath.Join(path, attrName))
+		data, err := os.ReadFile(filepath.Join(path, attrName))
 		if err != nil {
 			if !os.IsNotExist(err) {
 				klog.Errorf("failed to read net iface attribute %s: %v", attrName, err)
@@ -148,7 +147,7 @@ func readIfaceInfo(path string) feature.InstanceFeature {
 	}
 
 	for _, attrName := range devAttrs {
-		data, err := ioutil.ReadFile(filepath.Join(path, "device", attrName))
+		data, err := os.ReadFile(filepath.Join(path, "device", attrName))
 		if err != nil {
 			if !os.IsNotExist(err) {
 				klog.Errorf("failed to read net device attribute %s: %v", attrName, err)

source/pci/utils.go

@@ -18,7 +18,7 @@ package pci
 
 import (
 	"fmt"
-	"io/ioutil"
+	"os"
 	"path/filepath"
 	"strings"
 
@@ -34,7 +34,7 @@ var optionalDevAttrs = []string{"sriov_totalvfs", "iommu_group/type", "iommu/int
 // Read a single PCI device attribute
 // A PCI attribute in this context, maps to the corresponding sysfs file
 func readSinglePciAttribute(devPath string, attrName string) (string, error) {
-	data, err := ioutil.ReadFile(filepath.Join(devPath, attrName))
+	data, err := os.ReadFile(filepath.Join(devPath, attrName))
 	if err != nil {
 		return "", fmt.Errorf("failed to read device attribute %s: %v", attrName, err)
 	}
@@ -73,7 +73,7 @@ func readPciDevInfo(devPath string) (*feature.InstanceFeature, error) {
 func detectPci() ([]feature.InstanceFeature, error) {
 	sysfsBasePath := source.SysfsDir.Path("bus/pci/devices")
 
-	devices, err := ioutil.ReadDir(sysfsBasePath)
+	devices, err := os.ReadDir(sysfsBasePath)
 	if err != nil {
 		return nil, err
 	}

source/storage/storage.go

@@ -18,7 +18,7 @@ package storage
 
 import (
 	"fmt"
-	"io/ioutil"
+	"os"
 	"path/filepath"
 	"strings"
 
@@ -96,7 +96,7 @@ func (s *storageSource) GetFeatures() *feature.DomainFeatures {
 func detectBlock() ([]feature.InstanceFeature, error) {
 	sysfsBasePath := source.SysfsDir.Path("block")
 
-	blockdevices, err := ioutil.ReadDir(sysfsBasePath)
+	blockdevices, err := os.ReadDir(sysfsBasePath)
 	if err != nil {
 		return nil, fmt.Errorf("failed to list block devices: %w", err)
 	}
@@ -113,7 +113,7 @@ func detectBlock() ([]feature.InstanceFeature, error) {
 func readBlockDevQueueInfo(path string) *feature.InstanceFeature {
 	attrs := map[string]string{"name": filepath.Base(path)}
 	for _, attrName := range queueAttrs {
-		data, err := ioutil.ReadFile(filepath.Join(path, "queue", attrName))
+		data, err := os.ReadFile(filepath.Join(path, "queue", attrName))
 		if err != nil {
 			klog.V(3).Infof("failed to read block device queue attribute %s: %w", attrName, err)
 			continue

source/usb/utils.go

@@ -18,7 +18,7 @@ package usb
 
 import (
 	"fmt"
-	"io/ioutil"
+	"os"
 	"path"
 	"path/filepath"
 	"strings"
@@ -40,7 +40,7 @@ var devAttrFileMap = map[string]string{
 }
 
 func readSingleUsbSysfsAttribute(path string) (string, error) {
-	data, err := ioutil.ReadFile(path)
+	data, err := os.ReadFile(path)
 	if err != nil {
 		return "", fmt.Errorf("failed to read device attribute %s: %v", filepath.Base(path), err)
 	}