Replace deprecated ioutil

Package `io/ioutil` was deprecated in golang 1.16, preventing podman from
building under Fedora 37.  Fortunately, functionality identical
replacements are provided by the packages `io` and `os`.  Replace all
usage of all `io/ioutil` symbols with appropriate substitutions
according to the golang docs.

Signed-off-by: Chris Evich <cevich@redhat.com>

test/e2e/benchmarks_test.go

@@ -5,7 +5,6 @@ package integration
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path"
 	"strconv"
@@ -108,7 +107,7 @@ var _ = Describe("Podman Benchmark Suite", func() {
 			if f.IsDir() {
 				continue
 			}
-			raw, err := ioutil.ReadFile(path.Join(timedir, f.Name()))
+			raw, err := os.ReadFile(path.Join(timedir, f.Name()))
 			if err != nil {
 				Fail(fmt.Sprintf("Error reading timing file: %v", err))
 			}

test/e2e/build_test.go

@@ -3,7 +3,6 @@ package integration
 import (
 	"bytes"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -219,10 +218,10 @@ var _ = Describe("Podman build", func() {
 		}
 
 		fakeFile := filepath.Join(os.TempDir(), "Containerfile")
-		Expect(ioutil.WriteFile(fakeFile, []byte(fmt.Sprintf("FROM %s", ALPINE)), 0755)).To(BeNil())
+		Expect(os.WriteFile(fakeFile, []byte(fmt.Sprintf("FROM %s", ALPINE)), 0755)).To(BeNil())
 
 		targetFile := filepath.Join(targetPath, "Containerfile")
-		Expect(ioutil.WriteFile(targetFile, []byte("FROM scratch"), 0755)).To(BeNil())
+		Expect(os.WriteFile(targetFile, []byte("FROM scratch"), 0755)).To(BeNil())
 
 		defer func() {
 			Expect(os.RemoveAll(fakeFile)).To(BeNil())
@@ -257,7 +256,7 @@ var _ = Describe("Podman build", func() {
 		session := podmanTest.Podman([]string{"build", "--pull-never", "build/basicalpine", "--iidfile", targetFile})
 		session.WaitWithDefaultTimeout()
 		Expect(session).Should(Exit(0))
-		id, _ := ioutil.ReadFile(targetFile)
+		id, _ := os.ReadFile(targetFile)
 
 		// Verify that id is correct
 		inspect := podmanTest.Podman([]string{"inspect", string(id)})
@@ -311,7 +310,7 @@ var _ = Describe("Podman build", func() {
 RUN printenv http_proxy`, ALPINE)
 
 		dockerfilePath := filepath.Join(podmanTest.TempDir, "Dockerfile")
-		err := ioutil.WriteFile(dockerfilePath, []byte(dockerfile), 0755)
+		err := os.WriteFile(dockerfilePath, []byte(dockerfile), 0755)
 		Expect(err).To(BeNil())
 		session := podmanTest.Podman([]string{"build", "--pull-never", "--http-proxy", "--file", dockerfilePath, podmanTest.TempDir})
 		session.Wait(120)
@@ -330,7 +329,7 @@ RUN printenv http_proxy`, ALPINE)
 RUN exit 5`, ALPINE)
 
 		dockerfilePath := filepath.Join(podmanTest.TempDir, "Dockerfile")
-		err := ioutil.WriteFile(dockerfilePath, []byte(dockerfile), 0755)
+		err := os.WriteFile(dockerfilePath, []byte(dockerfile), 0755)
 		Expect(err).To(BeNil())
 		session := podmanTest.Podman([]string{"build", "-t", "error-test", "--file", dockerfilePath, podmanTest.TempDir})
 		session.Wait(120)
@@ -388,7 +387,7 @@ RUN exit 5`, ALPINE)
 		err = os.Mkdir(targetSubPath, 0755)
 		Expect(err).To(BeNil())
 		dummyFile := filepath.Join(targetSubPath, "dummy")
-		err = ioutil.WriteFile(dummyFile, []byte("dummy"), 0644)
+		err = os.WriteFile(dummyFile, []byte("dummy"), 0644)
 		Expect(err).To(BeNil())
 
 		containerfile := fmt.Sprintf(`FROM %s
@@ -396,7 +395,7 @@ ADD . /test
 RUN find /test`, ALPINE)
 
 		containerfilePath := filepath.Join(targetPath, "Containerfile")
-		err = ioutil.WriteFile(containerfilePath, []byte(containerfile), 0644)
+		err = os.WriteFile(containerfilePath, []byte(containerfile), 0644)
 		Expect(err).To(BeNil())
 
 		defer func() {
@@ -437,7 +436,7 @@ RUN find /test`, ALPINE)
 		containerfile := fmt.Sprintf("FROM %s", ALPINE)
 
 		containerfilePath := filepath.Join(targetSubPath, "Containerfile")
-		err = ioutil.WriteFile(containerfilePath, []byte(containerfile), 0644)
+		err = os.WriteFile(containerfilePath, []byte(containerfile), 0644)
 		Expect(err).To(BeNil())
 
 		defer func() {
@@ -476,7 +475,7 @@ ADD . /testfilter/
 RUN find /testfilter/`, ALPINE)
 
 		containerfilePath := filepath.Join(targetPath, "Containerfile")
-		err = ioutil.WriteFile(containerfilePath, []byte(containerfile), 0644)
+		err = os.WriteFile(containerfilePath, []byte(containerfile), 0644)
 		Expect(err).To(BeNil())
 
 		targetSubPath := filepath.Join(targetPath, "subdir")
@@ -484,15 +483,15 @@ RUN find /testfilter/`, ALPINE)
 		Expect(err).To(BeNil())
 
 		dummyFile1 := filepath.Join(targetPath, "dummy1")
-		err = ioutil.WriteFile(dummyFile1, []byte("dummy1"), 0644)
+		err = os.WriteFile(dummyFile1, []byte("dummy1"), 0644)
 		Expect(err).To(BeNil())
 
 		dummyFile2 := filepath.Join(targetPath, "dummy2")
-		err = ioutil.WriteFile(dummyFile2, []byte("dummy2"), 0644)
+		err = os.WriteFile(dummyFile2, []byte("dummy2"), 0644)
 		Expect(err).To(BeNil())
 
 		dummyFile3 := filepath.Join(targetSubPath, "dummy3")
-		err = ioutil.WriteFile(dummyFile3, []byte("dummy3"), 0644)
+		err = os.WriteFile(dummyFile3, []byte("dummy3"), 0644)
 		Expect(err).To(BeNil())
 
 		defer func() {
@@ -509,7 +508,7 @@ subdir**`
 
 		// test .dockerignore
 		By("Test .dockererignore")
-		err = ioutil.WriteFile(dockerignoreFile, []byte(dockerignoreContent), 0644)
+		err = os.WriteFile(dockerignoreFile, []byte(dockerignoreContent), 0644)
 		Expect(err).To(BeNil())
 
 		session := podmanTest.Podman([]string{"build", "-t", "test", "."})
@@ -540,18 +539,18 @@ subdir**`
 		contents.WriteString("RUN find /testfilter/ -print\n")
 
 		containerfile := filepath.Join(tempdir, "Containerfile")
-		Expect(ioutil.WriteFile(containerfile, contents.Bytes(), 0644)).ToNot(HaveOccurred())
+		Expect(os.WriteFile(containerfile, contents.Bytes(), 0644)).ToNot(HaveOccurred())
 
 		contextDir, err := CreateTempDirInTempDir()
 		Expect(err).ToNot(HaveOccurred())
 		defer os.RemoveAll(contextDir)
 
-		Expect(ioutil.WriteFile(filepath.Join(contextDir, "expected"), contents.Bytes(), 0644)).
+		Expect(os.WriteFile(filepath.Join(contextDir, "expected"), contents.Bytes(), 0644)).
 			ToNot(HaveOccurred())
 
 		subdirPath := filepath.Join(contextDir, "subdir")
 		Expect(os.MkdirAll(subdirPath, 0755)).ToNot(HaveOccurred())
-		Expect(ioutil.WriteFile(filepath.Join(subdirPath, "extra"), contents.Bytes(), 0644)).
+		Expect(os.WriteFile(filepath.Join(subdirPath, "extra"), contents.Bytes(), 0644)).
 			ToNot(HaveOccurred())
 		randomFile := filepath.Join(subdirPath, "randomFile")
 		dd := exec.Command("dd", "if=/dev/urandom", "of="+randomFile, "bs=1G", "count=1")
@@ -567,7 +566,7 @@ subdir**`
 		}()
 
 		By("Test .containerignore filtering subdirectory")
-		err = ioutil.WriteFile(filepath.Join(contextDir, ".containerignore"), []byte(`subdir/`), 0644)
+		err = os.WriteFile(filepath.Join(contextDir, ".containerignore"), []byte(`subdir/`), 0644)
 		Expect(err).ToNot(HaveOccurred())
 
 		session := podmanTest.Podman([]string{"build", "-f", containerfile, contextDir})
@@ -597,7 +596,7 @@ subdir**`
 		err = os.Mkdir(targetSubPath, 0755)
 		Expect(err).To(BeNil())
 		dummyFile := filepath.Join(targetSubPath, "dummy")
-		err = ioutil.WriteFile(dummyFile, []byte("dummy"), 0644)
+		err = os.WriteFile(dummyFile, []byte("dummy"), 0644)
 		Expect(err).To(BeNil())
 
 		emptyDir := filepath.Join(targetSubPath, "emptyDir")
@@ -612,7 +611,7 @@ RUN find /test
 RUN [[ -L /test/dummy-symlink ]] && echo SYMLNKOK || echo SYMLNKERR`, ALPINE)
 
 		containerfilePath := filepath.Join(targetSubPath, "Containerfile")
-		err = ioutil.WriteFile(containerfilePath, []byte(containerfile), 0644)
+		err = os.WriteFile(containerfilePath, []byte(containerfile), 0644)
 		Expect(err).To(BeNil())
 
 		defer func() {
@@ -641,7 +640,7 @@ RUN [[ -L /test/dummy-symlink ]] && echo SYMLNKOK || echo SYMLNKERR`, ALPINE)
 RUN cat /etc/hosts
 RUN grep CapEff /proc/self/status`
 
-		Expect(ioutil.WriteFile(containerFile, []byte(content), 0755)).To(BeNil())
+		Expect(os.WriteFile(containerFile, []byte(content), 0755)).To(BeNil())
 
 		defer func() {
 			Expect(os.RemoveAll(containerFile)).To(BeNil())
@@ -668,7 +667,7 @@ RUN grep CapEff /proc/self/status`
 		Expect(err).To(BeNil())
 
 		containerFile := filepath.Join(targetPath, "Containerfile")
-		Expect(ioutil.WriteFile(containerFile, []byte(fmt.Sprintf("FROM %s", ALPINE)), 0755)).To(BeNil())
+		Expect(os.WriteFile(containerFile, []byte(fmt.Sprintf("FROM %s", ALPINE)), 0755)).To(BeNil())
 
 		defer func() {
 			Expect(os.RemoveAll(containerFile)).To(BeNil())
@@ -712,7 +711,7 @@ RUN grep CapEff /proc/self/status`
 RUN echo hello`, ALPINE)
 
 		containerfilePath := filepath.Join(podmanTest.TempDir, "Containerfile")
-		err := ioutil.WriteFile(containerfilePath, []byte(containerfile), 0755)
+		err := os.WriteFile(containerfilePath, []byte(containerfile), 0755)
 		Expect(err).To(BeNil())
 		session := podmanTest.Podman([]string{"build", "--pull-never", "-t", "test", "--timestamp", "0", "--file", containerfilePath, podmanTest.TempDir})
 		session.WaitWithDefaultTimeout()
@@ -730,7 +729,7 @@ RUN echo hello`, ALPINE)
 		containerFile := filepath.Join(targetPath, "Containerfile")
 		content := `FROM scratch`
 
-		Expect(ioutil.WriteFile(containerFile, []byte(content), 0755)).To(BeNil())
+		Expect(os.WriteFile(containerFile, []byte(content), 0755)).To(BeNil())
 
 		session := podmanTest.Podman([]string{"build", "--log-rusage", "--pull-never", targetPath})
 		session.WaitWithDefaultTimeout()
@@ -743,7 +742,7 @@ RUN echo hello`, ALPINE)
 	It("podman build --arch --os flag", func() {
 		containerfile := `FROM scratch`
 		containerfilePath := filepath.Join(podmanTest.TempDir, "Containerfile")
-		err := ioutil.WriteFile(containerfilePath, []byte(containerfile), 0755)
+		err := os.WriteFile(containerfilePath, []byte(containerfile), 0755)
 		Expect(err).To(BeNil())
 		session := podmanTest.Podman([]string{"build", "--pull-never", "-t", "test", "--arch", "foo", "--os", "bar", "--file", containerfilePath, podmanTest.TempDir})
 		session.WaitWithDefaultTimeout()
@@ -762,7 +761,7 @@ RUN echo hello`, ALPINE)
 	It("podman build --os windows flag", func() {
 		containerfile := `FROM scratch`
 		containerfilePath := filepath.Join(podmanTest.TempDir, "Containerfile")
-		err := ioutil.WriteFile(containerfilePath, []byte(containerfile), 0755)
+		err := os.WriteFile(containerfilePath, []byte(containerfile), 0755)
 		Expect(err).To(BeNil())
 		session := podmanTest.Podman([]string{"build", "--pull-never", "-t", "test", "--os", "windows", "--file", containerfilePath, podmanTest.TempDir})
 		session.WaitWithDefaultTimeout()
@@ -785,7 +784,7 @@ RUN echo hello`, ALPINE)
 		containerfile := fmt.Sprintf(`FROM %s
 RUN ls /dev/fuse`, ALPINE)
 		containerfilePath := filepath.Join(podmanTest.TempDir, "Containerfile")
-		err := ioutil.WriteFile(containerfilePath, []byte(containerfile), 0755)
+		err := os.WriteFile(containerfilePath, []byte(containerfile), 0755)
 		Expect(err).To(BeNil())
 		session := podmanTest.Podman([]string{"build", "--pull-never", "-t", "test", "--file", containerfilePath, podmanTest.TempDir})
 		session.WaitWithDefaultTimeout()
@@ -801,7 +800,7 @@ RUN ls /dev/fuse`, ALPINE)
 		containerfile := fmt.Sprintf(`FROM %s
 RUN ls /dev/test1`, ALPINE)
 		containerfilePath := filepath.Join(podmanTest.TempDir, "Containerfile")
-		err := ioutil.WriteFile(containerfilePath, []byte(containerfile), 0755)
+		err := os.WriteFile(containerfilePath, []byte(containerfile), 0755)
 		Expect(err).To(BeNil())
 		session := podmanTest.Podman([]string{"build", "--pull-never", "-t", "test", "--file", containerfilePath, podmanTest.TempDir})
 		session.WaitWithDefaultTimeout()
@@ -822,7 +821,7 @@ RUN ls /dev/test1`, ALPINE)
 		Expect(err).To(BeNil())
 		err = os.Mkdir(buildRoot, 0755)
 		Expect(err).To(BeNil())
-		err = ioutil.WriteFile(containerFilePath, []byte(containerFile), 0755)
+		err = os.WriteFile(containerFilePath, []byte(containerFile), 0755)
 		Expect(err).To(BeNil())
 		build := podmanTest.Podman([]string{"build", "-f", containerFilePath, buildRoot})
 		build.WaitWithDefaultTimeout()

test/e2e/commit_test.go

@@ -1,7 +1,6 @@
 package integration
 
 import (
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -287,7 +286,7 @@ var _ = Describe("Podman commit", func() {
 		session.WaitWithDefaultTimeout()
 		Expect(session).Should(Exit(0))
 
-		id, _ := ioutil.ReadFile(targetFile)
+		id, _ := os.ReadFile(targetFile)
 		check := podmanTest.Podman([]string{"inspect", "foobar.com/test1-image:latest"})
 		check.WaitWithDefaultTimeout()
 		data := check.InspectImageJSON()
@@ -297,7 +296,7 @@ var _ = Describe("Podman commit", func() {
 	It("podman commit should not commit secret", func() {
 		secretsString := "somesecretdata"
 		secretFilePath := filepath.Join(podmanTest.TempDir, "secret")
-		err := ioutil.WriteFile(secretFilePath, []byte(secretsString), 0755)
+		err := os.WriteFile(secretFilePath, []byte(secretsString), 0755)
 		Expect(err).To(BeNil())
 
 		session := podmanTest.Podman([]string{"secret", "create", "mysecret", secretFilePath})
@@ -322,7 +321,7 @@ var _ = Describe("Podman commit", func() {
 	It("podman commit should not commit env secret", func() {
 		secretsString := "somesecretdata"
 		secretFilePath := filepath.Join(podmanTest.TempDir, "secret")
-		err := ioutil.WriteFile(secretFilePath, []byte(secretsString), 0755)
+		err := os.WriteFile(secretFilePath, []byte(secretsString), 0755)
 		Expect(err).To(BeNil())
 
 		session := podmanTest.Podman([]string{"secret", "create", "mysecret", secretFilePath})

test/e2e/common_test.go

@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"math/rand"
 	"net"
 	"net/url"
@@ -144,7 +143,7 @@ var _ = SynchronizedBeforeSuite(func() []byte {
 		}
 		f.Close()
 	}
-	path, err := ioutil.TempDir("", "libpodlock")
+	path, err := os.MkdirTemp("", "libpodlock")
 	if err != nil {
 		fmt.Println(err)
 		os.Exit(1)
@@ -875,7 +874,7 @@ func writeConf(conf []byte, confPath string) {
 			fmt.Println(err)
 		}
 	}
-	if err := ioutil.WriteFile(confPath, conf, 0o777); err != nil {
+	if err := os.WriteFile(confPath, conf, 0o777); err != nil {
 		fmt.Println(err)
 	}
 }
@@ -967,7 +966,7 @@ func (s *PodmanSessionIntegration) jq(jqCommand string) (string, error) {
 
 func (p *PodmanTestIntegration) buildImage(dockerfile, imageName string, layers string, label string) string {
 	dockerfilePath := filepath.Join(p.TempDir, "Dockerfile")
-	err := ioutil.WriteFile(dockerfilePath, []byte(dockerfile), 0755)
+	err := os.WriteFile(dockerfilePath, []byte(dockerfile), 0755)
 	Expect(err).To(BeNil())
 	cmd := []string{"build", "--pull-never", "--layers=" + layers, "--file", dockerfilePath}
 	if label != "" {

test/e2e/container_create_volume_test.go

@@ -2,7 +2,6 @@ package integration
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
@@ -15,7 +14,7 @@ import (
 func buildDataVolumeImage(pTest *PodmanTestIntegration, image, data, dest string) {
 	// Create a dummy file for data volume
 	dummyFile := filepath.Join(pTest.TempDir, data)
-	err := ioutil.WriteFile(dummyFile, []byte(data), 0644)
+	err := os.WriteFile(dummyFile, []byte(data), 0644)
 	Expect(err).To(BeNil())
 
 	// Create a data volume container image but no CMD binary in it
@@ -29,7 +28,7 @@ VOLUME %s/`, data, dest, dest)
 func createContainersConfFile(pTest *PodmanTestIntegration) {
 	configPath := filepath.Join(pTest.TempDir, "containers.conf")
 	containersConf := []byte("[containers]\nprepare_volume_on_create = true\n")
-	err := ioutil.WriteFile(configPath, containersConf, os.ModePerm)
+	err := os.WriteFile(configPath, containersConf, os.ModePerm)
 	Expect(err).To(BeNil())
 
 	// Set custom containers.conf file

test/e2e/containers_conf_test.go

@@ -2,7 +2,6 @@ package integration
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -208,7 +207,7 @@ var _ = Describe("Verify podman containers.conf usage", func() {
 		tempdir, err = CreateTempDirInTempDir()
 		Expect(err).ToNot(HaveOccurred())
 
-		err := ioutil.WriteFile(conffile, []byte(fmt.Sprintf("[containers]\nvolumes=[\"%s:%s:Z\",]\n", tempdir, tempdir)), 0755)
+		err := os.WriteFile(conffile, []byte(fmt.Sprintf("[containers]\nvolumes=[\"%s:%s:Z\",]\n", tempdir, tempdir)), 0755)
 		Expect(err).ToNot(HaveOccurred())
 
 		os.Setenv("CONTAINERS_CONF", conffile)
@@ -406,7 +405,7 @@ var _ = Describe("Verify podman containers.conf usage", func() {
 
 		profile := filepath.Join(podmanTest.TempDir, "seccomp.json")
 		containersConf := []byte(fmt.Sprintf("[containers]\nseccomp_profile=\"%s\"", profile))
-		err = ioutil.WriteFile(configPath, containersConf, os.ModePerm)
+		err = os.WriteFile(configPath, containersConf, os.ModePerm)
 		Expect(err).ToNot(HaveOccurred())
 
 		if IsRemote() {
@@ -430,7 +429,7 @@ var _ = Describe("Verify podman containers.conf usage", func() {
 		os.Setenv("CONTAINERS_CONF", configPath)
 
 		containersConf := []byte("[engine]\nimage_copy_tmp_dir=\"/foobar\"")
-		err = ioutil.WriteFile(configPath, containersConf, os.ModePerm)
+		err = os.WriteFile(configPath, containersConf, os.ModePerm)
 		Expect(err).ToNot(HaveOccurred())
 
 		if IsRemote() {
@@ -443,7 +442,7 @@ var _ = Describe("Verify podman containers.conf usage", func() {
 		Expect(session.OutputToString()).To(Equal("/foobar"))
 
 		containersConf = []byte(fmt.Sprintf("[engine]\nimage_copy_tmp_dir=%q", storagePath))
-		err = ioutil.WriteFile(configPath, containersConf, os.ModePerm)
+		err = os.WriteFile(configPath, containersConf, os.ModePerm)
 		Expect(err).ToNot(HaveOccurred())
 		if IsRemote() {
 			podmanTest.RestartRemoteService()
@@ -455,7 +454,7 @@ var _ = Describe("Verify podman containers.conf usage", func() {
 		Expect(session.Out.Contents()).To(ContainSubstring(storagePath))
 
 		containersConf = []byte("[engine]\nimage_copy_tmp_dir=\"storage1\"")
-		err = ioutil.WriteFile(configPath, containersConf, os.ModePerm)
+		err = os.WriteFile(configPath, containersConf, os.ModePerm)
 		Expect(err).ToNot(HaveOccurred())
 
 		if !IsRemote() {
@@ -485,7 +484,7 @@ var _ = Describe("Verify podman containers.conf usage", func() {
 		os.Setenv("CONTAINERS_CONF", configPath)
 
 		containersConf := []byte("[engine]\ninfra_image=\"" + infra1 + "\"")
-		err = ioutil.WriteFile(configPath, containersConf, os.ModePerm)
+		err = os.WriteFile(configPath, containersConf, os.ModePerm)
 		Expect(err).ToNot(HaveOccurred())
 
 		if IsRemote() {
@@ -520,7 +519,7 @@ var _ = Describe("Verify podman containers.conf usage", func() {
 		os.Setenv("CONTAINERS_CONF", configPath)
 		defer os.Remove(configPath)
 
-		err := ioutil.WriteFile(configPath, []byte("[engine]\nremote=true"), os.ModePerm)
+		err := os.WriteFile(configPath, []byte("[engine]\nremote=true"), os.ModePerm)
 		Expect(err).ToNot(HaveOccurred())
 
 		// podmanTest.Podman() cannot be used as it was initialized remote==false
@@ -540,7 +539,7 @@ var _ = Describe("Verify podman containers.conf usage", func() {
 		}
 
 		conffile := filepath.Join(podmanTest.TempDir, "container.conf")
-		err := ioutil.WriteFile(conffile, []byte("[containers]\ncgroups=\"disabled\"\n"), 0755)
+		err := os.WriteFile(conffile, []byte("[containers]\ncgroups=\"disabled\"\n"), 0755)
 		Expect(err).ToNot(HaveOccurred())
 
 		result := podmanTest.Podman([]string{"create", ALPINE, "true"})
@@ -572,7 +571,7 @@ var _ = Describe("Verify podman containers.conf usage", func() {
 	It("podman containers.conf runtime", func() {
 		SkipIfRemote("--runtime option is not available for remote commands")
 		conffile := filepath.Join(podmanTest.TempDir, "container.conf")
-		err := ioutil.WriteFile(conffile, []byte("[engine]\nruntime=\"testruntime\"\n"), 0755)
+		err := os.WriteFile(conffile, []byte("[engine]\nruntime=\"testruntime\"\n"), 0755)
 		Expect(err).ToNot(HaveOccurred())
 
 		os.Setenv("CONTAINERS_CONF", conffile)

test/e2e/cp_test.go

@@ -1,7 +1,6 @@
 package integration
 
 import (
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"os/user"
@@ -43,13 +42,13 @@ var _ = Describe("Podman cp", func() {
 	// Copy a file to the container, then back to the host and make sure
 	// that the contents match.
 	It("podman cp file", func() {
-		srcFile, err := ioutil.TempFile("", "")
+		srcFile, err := os.CreateTemp("", "")
 		Expect(err).To(BeNil())
 		defer srcFile.Close()
 		defer os.Remove(srcFile.Name())
 
 		originalContent := []byte("podman cp file test")
-		err = ioutil.WriteFile(srcFile.Name(), originalContent, 0644)
+		err = os.WriteFile(srcFile.Name(), originalContent, 0644)
 		Expect(err).To(BeNil())
 
 		// Create a container. NOTE that container mustn't be running for copying.
@@ -72,7 +71,7 @@ var _ = Describe("Podman cp", func() {
 
 		// Copy FROM the container.
 
-		destFile, err := ioutil.TempFile("", "")
+		destFile, err := os.CreateTemp("", "")
 		Expect(err).To(BeNil())
 		defer destFile.Close()
 		defer os.Remove(destFile.Name())
@@ -86,7 +85,7 @@ var _ = Describe("Podman cp", func() {
 		Expect(session).Should(Exit(0))
 
 		// Now make sure the content matches.
-		roundtripContent, err := ioutil.ReadFile(destFile.Name())
+		roundtripContent, err := os.ReadFile(destFile.Name())
 		Expect(err).To(BeNil())
 		Expect(roundtripContent).To(Equal(originalContent))
 	})
@@ -94,13 +93,13 @@ var _ = Describe("Podman cp", func() {
 	// Copy a file to the container, then back to the host in --pid=host
 	It("podman cp --pid=host file", func() {
 		SkipIfRootlessCgroupsV1("Not supported for rootless + CgroupsV1")
-		srcFile, err := ioutil.TempFile("", "")
+		srcFile, err := os.CreateTemp("", "")
 		Expect(err).To(BeNil())
 		defer srcFile.Close()
 		defer os.Remove(srcFile.Name())
 
 		originalContent := []byte("podman cp file test")
-		err = ioutil.WriteFile(srcFile.Name(), originalContent, 0644)
+		err = os.WriteFile(srcFile.Name(), originalContent, 0644)
 		Expect(err).To(BeNil())
 
 		// Create a container. NOTE that container mustn't be running for copying.
@@ -120,7 +119,7 @@ var _ = Describe("Podman cp", func() {
 
 		// Copy FROM the container.
 
-		destFile, err := ioutil.TempFile("", "")
+		destFile, err := os.CreateTemp("", "")
 		Expect(err).To(BeNil())
 		defer destFile.Close()
 		defer os.Remove(destFile.Name())
@@ -130,7 +129,7 @@ var _ = Describe("Podman cp", func() {
 		Expect(session).Should(Exit(0))
 
 		// Now make sure the content matches.
-		roundtripContent, err := ioutil.ReadFile(destFile.Name())
+		roundtripContent, err := os.ReadFile(destFile.Name())
 		Expect(err).To(BeNil())
 		Expect(roundtripContent).To(Equal(originalContent))
 	})
@@ -139,13 +138,13 @@ var _ = Describe("Podman cp", func() {
 	// make sure that the link and the resolved path are accessible and
 	// give the right content.
 	It("podman cp symlink", func() {
-		srcFile, err := ioutil.TempFile("", "")
+		srcFile, err := os.CreateTemp("", "")
 		Expect(err).To(BeNil())
 		defer srcFile.Close()
 		defer os.Remove(srcFile.Name())
 
 		originalContent := []byte("podman cp symlink test")
-		err = ioutil.WriteFile(srcFile.Name(), originalContent, 0644)
+		err = os.WriteFile(srcFile.Name(), originalContent, 0644)
 		Expect(err).To(BeNil())
 
 		session := podmanTest.Podman([]string{"run", "-d", ALPINE, "top"})
@@ -178,13 +177,13 @@ var _ = Describe("Podman cp", func() {
 	// the path to the volume's mount point on the host, and 3) copy the
 	// data to the volume and not the container.
 	It("podman cp volume", func() {
-		srcFile, err := ioutil.TempFile("", "")
+		srcFile, err := os.CreateTemp("", "")
 		Expect(err).To(BeNil())
 		defer srcFile.Close()
 		defer os.Remove(srcFile.Name())
 
 		originalContent := []byte("podman cp volume")
-		err = ioutil.WriteFile(srcFile.Name(), originalContent, 0644)
+		err = os.WriteFile(srcFile.Name(), originalContent, 0644)
 		Expect(err).To(BeNil())
 		session := podmanTest.Podman([]string{"volume", "create", "data"})
 		session.WaitWithDefaultTimeout()
@@ -205,7 +204,7 @@ var _ = Describe("Podman cp", func() {
 		Expect(session).Should(Exit(0))
 
 		volumeMountPoint := session.OutputToString()
-		copiedContent, err := ioutil.ReadFile(filepath.Join(volumeMountPoint, "file.txt"))
+		copiedContent, err := os.ReadFile(filepath.Join(volumeMountPoint, "file.txt"))
 		Expect(err).To(BeNil())
 		Expect(copiedContent).To(Equal(originalContent))
 	})
@@ -214,7 +213,7 @@ var _ = Describe("Podman cp", func() {
 	// it to the host and back to the container and make sure that we can
 	// access it, and (roughly) the right users own it.
 	It("podman cp from ctr chown ", func() {
-		srcFile, err := ioutil.TempFile("", "")
+		srcFile, err := os.CreateTemp("", "")
 		Expect(err).To(BeNil())
 		defer srcFile.Close()
 		defer os.Remove(srcFile.Name())
@@ -265,7 +264,7 @@ var _ = Describe("Podman cp", func() {
 		session.WaitWithDefaultTimeout()
 		Expect(session).Should(Exit(0))
 
-		tmpDir, err := ioutil.TempDir("", "")
+		tmpDir, err := os.MkdirTemp("", "")
 		Expect(err).To(BeNil())
 
 		session = podmanTest.Podman([]string{"cp", container + ":/", tmpDir})

test/e2e/create_test.go

@@ -2,7 +2,6 @@ package integration
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"runtime"
@@ -242,7 +241,7 @@ var _ = Describe("Podman create", func() {
 		session.WaitWithDefaultTimeout()
 		Expect(session).Should(Exit(125))
 
-		tmpDir, err := ioutil.TempDir("", "")
+		tmpDir, err := os.MkdirTemp("", "")
 		Expect(err).To(BeNil())
 		defer os.RemoveAll(tmpDir)
 

test/e2e/exec_test.go

@@ -2,7 +2,6 @@ package integration
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -545,7 +544,7 @@ RUN useradd -u 1000 auser`, fedoraMinimal)
 	It("podman exec with env var secret", func() {
 		secretsString := "somesecretdata"
 		secretFilePath := filepath.Join(podmanTest.TempDir, "secret")
-		err := ioutil.WriteFile(secretFilePath, []byte(secretsString), 0755)
+		err := os.WriteFile(secretFilePath, []byte(secretsString), 0755)
 		Expect(err).To(BeNil())
 
 		session := podmanTest.Podman([]string{"secret", "create", "mysecret", secretFilePath})

test/e2e/generate_kube_test.go

@@ -1,7 +1,6 @@
 package integration
 
 import (
-	"io/ioutil"
 	"os"
 	"os/user"
 	"path/filepath"
@@ -278,7 +277,7 @@ var _ = Describe("Podman generate kube", func() {
 		if name == "root" {
 			name = "containers"
 		}
-		content, err := ioutil.ReadFile("/etc/subuid")
+		content, err := os.ReadFile("/etc/subuid")
 		if err != nil {
 			Skip("cannot read /etc/subuid")
 		}
@@ -752,7 +751,7 @@ var _ = Describe("Podman generate kube", func() {
 		kube.WaitWithDefaultTimeout()
 		Expect(kube).Should(Exit(0))
 
-		b, err := ioutil.ReadFile(outputFile)
+		b, err := os.ReadFile(outputFile)
 		Expect(err).ShouldNot(HaveOccurred())
 		pod := new(v1.Pod)
 		err = yaml.Unmarshal(b, pod)
@@ -1045,7 +1044,7 @@ ENTRYPOINT ["sleep"]`
 		targetPath, err := CreateTempDirInTempDir()
 		Expect(err).To(BeNil())
 		containerfilePath := filepath.Join(targetPath, "Containerfile")
-		err = ioutil.WriteFile(containerfilePath, []byte(containerfile), 0644)
+		err = os.WriteFile(containerfilePath, []byte(containerfile), 0644)
 		Expect(err).To(BeNil())
 
 		image := "generatekube:test"
@@ -1135,7 +1134,7 @@ USER test1`
 		targetPath, err := CreateTempDirInTempDir()
 		Expect(err).To(BeNil())
 		containerfilePath := filepath.Join(targetPath, "Containerfile")
-		err = ioutil.WriteFile(containerfilePath, []byte(containerfile), 0644)
+		err = os.WriteFile(containerfilePath, []byte(containerfile), 0644)
 		Expect(err).To(BeNil())
 
 		image := "generatekube:test"

test/e2e/generate_systemd_test.go

@@ -1,7 +1,6 @@
 package integration
 
 import (
-	"io/ioutil"
 	"os"
 	"strings"
 
@@ -539,7 +538,7 @@ var _ = Describe("Podman generate systemd", func() {
 	})
 
 	It("podman generate systemd pod with containers --new", func() {
-		tmpDir, err := ioutil.TempDir("", "")
+		tmpDir, err := os.MkdirTemp("", "")
 		Expect(err).To(BeNil())
 		tmpFile := tmpDir + "podID"
 		defer os.RemoveAll(tmpDir)

test/e2e/healthcheck_run_test.go

@@ -2,7 +2,6 @@ package integration
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"time"
@@ -303,7 +302,7 @@ var _ = Describe("Podman healthcheck run", func() {
 		containerfile := fmt.Sprintf(`FROM %s
 HEALTHCHECK CMD ls -l / 2>&1`, ALPINE)
 		containerfilePath := filepath.Join(targetPath, "Containerfile")
-		err = ioutil.WriteFile(containerfilePath, []byte(containerfile), 0644)
+		err = os.WriteFile(containerfilePath, []byte(containerfile), 0644)
 		Expect(err).To(BeNil())
 		defer func() {
 			Expect(os.Chdir(cwd)).To(BeNil())

test/e2e/image_scp_test.go

@@ -1,7 +1,6 @@
 package integration
 
 import (
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
@@ -25,7 +24,7 @@ var _ = Describe("podman image scp", func() {
 
 	BeforeEach(func() {
 		ConfPath.Value, ConfPath.IsSet = os.LookupEnv("CONTAINERS_CONF")
-		conf, err := ioutil.TempFile("", "containersconf")
+		conf, err := os.CreateTemp("", "containersconf")
 		Expect(err).ToNot(HaveOccurred())
 
 		os.Setenv("CONTAINERS_CONF", conf.Name())

test/e2e/info_test.go

@@ -2,7 +2,6 @@ package integration
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"os/user"
@@ -104,7 +103,7 @@ var _ = Describe("Podman Info", func() {
 		driver := `"overlay"`
 		storageOpt := `"/usr/bin/fuse-overlayfs"`
 		storageConf := []byte(fmt.Sprintf("[storage]\ndriver=%s\nrootless_storage_path=%s\n[storage.options]\nmount_program=%s", driver, rootlessStoragePath, storageOpt))
-		err = ioutil.WriteFile(configPath, storageConf, os.ModePerm)
+		err = os.WriteFile(configPath, storageConf, os.ModePerm)
 		Expect(err).To(BeNil())
 
 		u, err := user.Current()

test/e2e/kill_test.go

@@ -1,7 +1,6 @@
 package integration
 
 import (
-	"io/ioutil"
 	"os"
 
 	. "github.com/containers/podman/v4/test/utils"
@@ -150,7 +149,7 @@ var _ = Describe("Podman kill", func() {
 	})
 
 	It("podman kill --cidfile", func() {
-		tmpDir, err := ioutil.TempDir("", "")
+		tmpDir, err := os.MkdirTemp("", "")
 		Expect(err).To(BeNil())
 		tmpFile := tmpDir + "cid"
 		defer os.RemoveAll(tmpDir)
@@ -170,12 +169,12 @@ var _ = Describe("Podman kill", func() {
 	})
 
 	It("podman kill multiple --cidfile", func() {
-		tmpDir1, err := ioutil.TempDir("", "")
+		tmpDir1, err := os.MkdirTemp("", "")
 		Expect(err).To(BeNil())
 		tmpFile1 := tmpDir1 + "cid"
 		defer os.RemoveAll(tmpDir1)
 
-		tmpDir2, err := ioutil.TempDir("", "")
+		tmpDir2, err := os.MkdirTemp("", "")
 		Expect(err).To(BeNil())
 		tmpFile2 := tmpDir2 + "cid"
 		defer os.RemoveAll(tmpDir2)

test/e2e/libpod_suite_remote_test.go

@@ -6,7 +6,6 @@ package integration
 import (
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -58,7 +57,7 @@ func (p *PodmanTestIntegration) setDefaultRegistriesConfigEnv() {
 func (p *PodmanTestIntegration) setRegistriesConfigEnv(b []byte) {
 	outfile := filepath.Join(p.TempDir, "registries.conf")
 	os.Setenv("CONTAINERS_REGISTRIES_CONF", outfile)
-	err := ioutil.WriteFile(outfile, b, 0644)
+	err := os.WriteFile(outfile, b, 0644)
 	Expect(err).ToNot(HaveOccurred())
 }
 

test/e2e/login_logout_test.go

@@ -3,7 +3,6 @@ package integration
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strconv"
@@ -101,7 +100,7 @@ var _ = Describe("Podman login and logout", func() {
 	})
 
 	readAuthInfo := func(filePath string) map[string]interface{} {
-		authBytes, err := ioutil.ReadFile(filePath)
+		authBytes, err := os.ReadFile(filePath)
 		Expect(err).To(BeNil())
 
 		var authInfo map[string]interface{}
@@ -137,12 +136,12 @@ var _ = Describe("Podman login and logout", func() {
 	})
 
 	It("podman login and logout without registry parameter", func() {
-		registriesConf, err := ioutil.TempFile("", "TestLoginWithoutParameter")
+		registriesConf, err := os.CreateTemp("", "TestLoginWithoutParameter")
 		Expect(err).To(BeNil())
 		defer registriesConf.Close()
 		defer os.Remove(registriesConf.Name())
 
-		err = ioutil.WriteFile(registriesConf.Name(), registriesConfWithSearch, os.ModePerm)
+		err = os.WriteFile(registriesConf.Name(), registriesConfWithSearch, os.ModePerm)
 		Expect(err).To(BeNil())
 
 		// Environment is per-process, so this looks very unsafe; actually it seems fine because tests are not
@@ -448,7 +447,7 @@ var _ = Describe("Podman login and logout", func() {
 	It("podman login and logout with repository push with invalid auth.json credentials", func() {
 		authFile := filepath.Join(podmanTest.TempDir, "auth.json")
 		// only `server` contains the correct login data
-		err := ioutil.WriteFile(authFile, []byte(fmt.Sprintf(`{"auths": {
+		err := os.WriteFile(authFile, []byte(fmt.Sprintf(`{"auths": {
 			"%s/podmantest": { "auth": "cG9kbWFudGVzdDp3cm9uZw==" },
 			"%s": { "auth": "cG9kbWFudGVzdDp0ZXN0" }
 		}}`, server, server)), 0644)
@@ -494,7 +493,7 @@ var _ = Describe("Podman login and logout", func() {
 		Expect(session).Should(Exit(0))
 
 		// only `server + /podmantest` and `server` have the correct login data
-		err := ioutil.WriteFile(authFile, []byte(fmt.Sprintf(`{"auths": {
+		err := os.WriteFile(authFile, []byte(fmt.Sprintf(`{"auths": {
 			"%s/podmantest/test-alpine": { "auth": "cG9kbWFudGVzdDp3cm9uZw==" },
 			"%s/podmantest": { "auth": "cG9kbWFudGVzdDp0ZXN0" },
 			"%s": { "auth": "cG9kbWFudGVzdDp0ZXN0" }

test/e2e/manifest_test.go

@@ -1,7 +1,6 @@
 package integration
 
 import (
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -338,7 +337,7 @@ var _ = Describe("Podman manifest", func() {
 		for _, f := range blobs {
 			blobPath := filepath.Join(blobsDir, f.Name())
 
-			sourceFile, err := ioutil.ReadFile(blobPath)
+			sourceFile, err := os.ReadFile(blobPath)
 			Expect(err).To(BeNil())
 
 			compressionType := archive.DetectCompression(sourceFile)

test/e2e/pause_test.go

@@ -2,7 +2,6 @@ package integration
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -31,7 +30,7 @@ var _ = Describe("Podman pause", func() {
 		}
 
 		if CGROUPSV2 {
-			b, err := ioutil.ReadFile("/proc/self/cgroup")
+			b, err := os.ReadFile("/proc/self/cgroup")
 			if err != nil {
 				Skip("cannot read self cgroup")
 			}
@@ -336,7 +335,7 @@ var _ = Describe("Podman pause", func() {
 	})
 
 	It("podman pause --cidfile", func() {
-		tmpDir, err := ioutil.TempDir("", "")
+		tmpDir, err := os.MkdirTemp("", "")
 		Expect(err).To(BeNil())
 		tmpFile := tmpDir + "cid"
 
@@ -365,7 +364,7 @@ var _ = Describe("Podman pause", func() {
 	})
 
 	It("podman pause multiple --cidfile", func() {
-		tmpDir, err := ioutil.TempDir("", "")
+		tmpDir, err := os.MkdirTemp("", "")
 		Expect(err).To(BeNil())
 		tmpFile1 := tmpDir + "cid-1"
 		tmpFile2 := tmpDir + "cid-2"

test/e2e/play_kube_test.go

@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"context"
 	"fmt"
-	"io/ioutil"
 	"net"
 	"net/url"
 	"os"
@@ -767,7 +766,7 @@ func generateMultiDocKubeYaml(kubeObjects []string, pathname string) error {
 
 func createSecret(podmanTest *PodmanTestIntegration, name string, value []byte) { //nolint:unparam
 	secretFilePath := filepath.Join(podmanTest.TempDir, "secret")
-	err := ioutil.WriteFile(secretFilePath, value, 0755)
+	err := os.WriteFile(secretFilePath, value, 0755)
 	Expect(err).To(BeNil())
 
 	secret := podmanTest.Podman([]string{"secret", "create", name, secretFilePath})
@@ -1442,7 +1441,7 @@ var _ = Describe("Podman play kube", func() {
 		conffile := filepath.Join(podmanTest.TempDir, "container.conf")
 
 		infraImage := "k8s.gcr.io/pause:3.2"
-		err := ioutil.WriteFile(conffile, []byte(fmt.Sprintf("[engine]\ninfra_image=\"%s\"\n", infraImage)), 0644)
+		err := os.WriteFile(conffile, []byte(fmt.Sprintf("[engine]\ninfra_image=\"%s\"\n", infraImage)), 0644)
 		Expect(err).To(BeNil())
 
 		os.Setenv("CONTAINERS_CONF", conffile)
@@ -2370,7 +2369,7 @@ spec:
 		tempdir, err = CreateTempDirInTempDir()
 		Expect(err).To(BeNil())
 
-		err := ioutil.WriteFile(conffile, []byte(testyaml), 0755)
+		err := os.WriteFile(conffile, []byte(testyaml), 0755)
 		Expect(err).To(BeNil())
 
 		kube := podmanTest.Podman([]string{"play", "kube", conffile})
@@ -3800,7 +3799,7 @@ ENV OPENJ9_JAVA_OPTIONS=%q
 		if name == "root" {
 			name = "containers"
 		}
-		content, err := ioutil.ReadFile("/etc/subuid")
+		content, err := os.ReadFile("/etc/subuid")
 		if err != nil {
 			Skip("cannot read /etc/subuid")
 		}
@@ -3808,7 +3807,7 @@ ENV OPENJ9_JAVA_OPTIONS=%q
 			Skip("cannot find mappings for the current user")
 		}
 
-		initialUsernsConfig, err := ioutil.ReadFile("/proc/self/uid_map")
+		initialUsernsConfig, err := os.ReadFile("/proc/self/uid_map")
 		Expect(err).To(BeNil())
 		if os.Geteuid() != 0 {
 			unshare := podmanTest.Podman([]string{"unshare", "cat", "/proc/self/uid_map"})

test/e2e/pod_create_test.go

@@ -2,7 +2,6 @@ package integration
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"os/user"
 	"path/filepath"
@@ -332,7 +331,7 @@ var _ = Describe("Podman pod create", func() {
 		session.WaitWithDefaultTimeout()
 		Expect(session).Should(Exit(0))
 
-		id, _ := ioutil.ReadFile(targetFile)
+		id, _ := os.ReadFile(targetFile)
 		check := podmanTest.Podman([]string{"pod", "inspect", "abc"})
 		check.WaitWithDefaultTimeout()
 		data := check.InspectPodToJSON()
@@ -707,7 +706,7 @@ ENTRYPOINT ["sleep","99999"]
 			name = "containers"
 		}
 
-		content, err := ioutil.ReadFile("/etc/subuid")
+		content, err := os.ReadFile("/etc/subuid")
 		if err != nil {
 			Skip("cannot read /etc/subuid")
 		}
@@ -742,7 +741,7 @@ ENTRYPOINT ["sleep","99999"]
 			name = "containers"
 		}
 
-		content, err := ioutil.ReadFile("/etc/subuid")
+		content, err := os.ReadFile("/etc/subuid")
 		if err != nil {
 			Skip("cannot read /etc/subuid")
 		}
@@ -778,7 +777,7 @@ ENTRYPOINT ["sleep","99999"]
 			name = "containers"
 		}
 
-		content, err := ioutil.ReadFile("/etc/subuid")
+		content, err := os.ReadFile("/etc/subuid")
 		if err != nil {
 			Skip("cannot read /etc/subuid")
 		}
@@ -815,7 +814,7 @@ ENTRYPOINT ["sleep","99999"]
 			name = "containers"
 		}
 
-		content, err := ioutil.ReadFile("/etc/subuid")
+		content, err := os.ReadFile("/etc/subuid")
 		if err != nil {
 			Skip("cannot read /etc/subuid")
 		}

test/e2e/pod_rm_test.go

@@ -3,7 +3,6 @@ package integration
 import (
 	"fmt"
 	"io/fs"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -235,7 +234,7 @@ var _ = Describe("Podman pod rm", func() {
 	})
 
 	It("podman pod start/remove single pod via --pod-id-file", func() {
-		tmpDir, err := ioutil.TempDir("", "")
+		tmpDir, err := os.MkdirTemp("", "")
 		Expect(err).To(BeNil())
 		tmpFile := tmpDir + "podID"
 		defer os.RemoveAll(tmpDir)
@@ -264,7 +263,7 @@ var _ = Describe("Podman pod rm", func() {
 	})
 
 	It("podman pod start/remove multiple pods via --pod-id-file", func() {
-		tmpDir, err := ioutil.TempDir("", "")
+		tmpDir, err := os.MkdirTemp("", "")
 		Expect(err).To(BeNil())
 		defer os.RemoveAll(tmpDir)
 

test/e2e/pod_start_test.go

@@ -2,7 +2,6 @@ package integration
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"strconv"
 	"strings"
@@ -175,7 +174,7 @@ var _ = Describe("Podman pod start", func() {
 	})
 
 	It("podman pod start single pod via --pod-id-file", func() {
-		tmpDir, err := ioutil.TempDir("", "")
+		tmpDir, err := os.MkdirTemp("", "")
 		Expect(err).To(BeNil())
 		tmpFile := tmpDir + "podID"
 		defer os.RemoveAll(tmpDir)
@@ -199,7 +198,7 @@ var _ = Describe("Podman pod start", func() {
 	})
 
 	It("podman pod start multiple pods via --pod-id-file", func() {
-		tmpDir, err := ioutil.TempDir("", "")
+		tmpDir, err := os.MkdirTemp("", "")
 		Expect(err).To(BeNil())
 		defer os.RemoveAll(tmpDir)
 
@@ -231,7 +230,7 @@ var _ = Describe("Podman pod start", func() {
 	})
 
 	It("podman pod create --infra-conmon-pod create + start", func() {
-		tmpDir, err := ioutil.TempDir("", "")
+		tmpDir, err := os.MkdirTemp("", "")
 		Expect(err).To(BeNil())
 		tmpFile := tmpDir + "podID"
 		defer os.RemoveAll(tmpDir)
@@ -248,7 +247,7 @@ var _ = Describe("Podman pod start", func() {
 		Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1)) // infra
 
 		readFirstLine := func(path string) string {
-			content, err := ioutil.ReadFile(path)
+			content, err := os.ReadFile(path)
 			Expect(err).To(BeNil())
 			return strings.Split(string(content), "\n")[0]
 		}

test/e2e/pod_stop_test.go

@@ -1,7 +1,6 @@
 package integration
 
 import (
-	"io/ioutil"
 	"os"
 
 	. "github.com/containers/podman/v4/test/utils"
@@ -181,7 +180,7 @@ var _ = Describe("Podman pod stop", func() {
 	})
 
 	It("podman pod start/stop single pod via --pod-id-file", func() {
-		tmpDir, err := ioutil.TempDir("", "")
+		tmpDir, err := os.MkdirTemp("", "")
 		Expect(err).To(BeNil())
 		tmpFile := tmpDir + "podID"
 		defer os.RemoveAll(tmpDir)
@@ -210,7 +209,7 @@ var _ = Describe("Podman pod stop", func() {
 	})
 
 	It("podman pod start/stop multiple pods via --pod-id-file", func() {
-		tmpDir, err := ioutil.TempDir("", "")
+		tmpDir, err := os.MkdirTemp("", "")
 		Expect(err).To(BeNil())
 		defer os.RemoveAll(tmpDir)
 

test/e2e/push_test.go

@@ -2,7 +2,6 @@ package integration
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -84,7 +83,7 @@ var _ = Describe("Podman push", func() {
 		for _, f := range blobs {
 			blobPath := filepath.Join(blobsDir, f.Name())
 
-			sourceFile, err := ioutil.ReadFile(blobPath)
+			sourceFile, err := os.ReadFile(blobPath)
 			Expect(err).To(BeNil())
 
 			compressionType := archive.DetectCompression(sourceFile)

test/e2e/restart_test.go

@@ -2,7 +2,6 @@ package integration
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"time"
 
@@ -251,7 +250,7 @@ var _ = Describe("Podman restart", func() {
 	})
 
 	It("podman restart --cidfile", func() {
-		tmpDir, err := ioutil.TempDir("", "")
+		tmpDir, err := os.MkdirTemp("", "")
 		Expect(err).To(BeNil())
 		tmpFile := tmpDir + "cid"
 
@@ -274,7 +273,7 @@ var _ = Describe("Podman restart", func() {
 	})
 
 	It("podman restart multiple --cidfile", func() {
-		tmpDir, err := ioutil.TempDir("", "")
+		tmpDir, err := os.MkdirTemp("", "")
 		Expect(err).To(BeNil())
 		tmpFile1 := tmpDir + "cid-1"
 		tmpFile2 := tmpDir + "cid-2"

test/e2e/rm_test.go

@@ -2,7 +2,6 @@ package integration
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 
 	. "github.com/containers/podman/v4/test/utils"
@@ -145,7 +144,7 @@ var _ = Describe("Podman rm", func() {
 	})
 
 	It("podman rm --cidfile", func() {
-		tmpDir, err := ioutil.TempDir("", "")
+		tmpDir, err := os.MkdirTemp("", "")
 		Expect(err).To(BeNil())
 		tmpFile := tmpDir + "cid"
 
@@ -166,7 +165,7 @@ var _ = Describe("Podman rm", func() {
 	})
 
 	It("podman rm multiple --cidfile", func() {
-		tmpDir, err := ioutil.TempDir("", "")
+		tmpDir, err := os.MkdirTemp("", "")
 		Expect(err).To(BeNil())
 		tmpFile1 := tmpDir + "cid-1"
 		tmpFile2 := tmpDir + "cid-2"

test/e2e/run_apparmor_test.go

@@ -5,7 +5,6 @@ package integration
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
@@ -104,7 +103,7 @@ profile aa-test-profile flags=(attach_disconnected,mediate_deleted) {
 }
 `
 		aaFile := filepath.Join(os.TempDir(), "aaFile")
-		Expect(ioutil.WriteFile(aaFile, []byte(aaProfile), 0755)).To(BeNil())
+		Expect(os.WriteFile(aaFile, []byte(aaProfile), 0755)).To(BeNil())
 		parse := SystemExec("apparmor_parser", []string{"-Kr", aaFile})
 		Expect(parse).Should(Exit(0))
 

test/e2e/run_cgroup_parent_test.go

@@ -2,7 +2,6 @@ package integration
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -86,12 +85,12 @@ var _ = Describe("Podman run with --cgroup-parent", func() {
 		containerCgroup := strings.TrimRight(strings.ReplaceAll(exec.OutputToString(), "0::", ""), "\n")
 
 		// Move the container process to a sub cgroup
-		content, err := ioutil.ReadFile(filepath.Join(cgroupRoot, containerCgroup, "cgroup.procs"))
+		content, err := os.ReadFile(filepath.Join(cgroupRoot, containerCgroup, "cgroup.procs"))
 		Expect(err).To(BeNil())
 		oldSubCgroupPath := filepath.Join(cgroupRoot, containerCgroup, "old-container")
 		err = os.MkdirAll(oldSubCgroupPath, 0755)
 		Expect(err).To(BeNil())
-		err = ioutil.WriteFile(filepath.Join(oldSubCgroupPath, "cgroup.procs"), content, 0644)
+		err = os.WriteFile(filepath.Join(oldSubCgroupPath, "cgroup.procs"), content, 0644)
 		Expect(err).To(BeNil())
 
 		newCgroup := fmt.Sprintf("%s/new-container", containerCgroup)

test/e2e/run_cpu_test.go

@@ -1,7 +1,6 @@
 package integration
 
 import (
-	"io/ioutil"
 	"os"
 
 	. "github.com/containers/podman/v4/test/utils"
@@ -26,7 +25,7 @@ var _ = Describe("Podman run cpu", func() {
 		}
 
 		if CGROUPSV2 {
-			if err := ioutil.WriteFile("/sys/fs/cgroup/cgroup.subtree_control", []byte("+cpuset"), 0644); err != nil {
+			if err := os.WriteFile("/sys/fs/cgroup/cgroup.subtree_control", []byte("+cpuset"), 0644); err != nil {
 				Skip("cpuset controller not available on the current kernel")
 			}
 		}

test/e2e/run_test.go

@@ -2,7 +2,6 @@ package integration
 
 import (
 	"fmt"
-	"io/ioutil"
 	"net"
 	"os"
 	"os/exec"
@@ -638,7 +637,7 @@ USER bin`, BB)
 		Expect(session).Should(Exit(0))
 		Expect(session.OutputToString()).To(Equal("111"))
 
-		currentOOMScoreAdj, err := ioutil.ReadFile("/proc/self/oom_score_adj")
+		currentOOMScoreAdj, err := os.ReadFile("/proc/self/oom_score_adj")
 		Expect(err).To(BeNil())
 		session = podmanTest.Podman([]string{"run", "--rm", fedoraMinimal, "cat", "/proc/self/oom_score_adj"})
 		session.WaitWithDefaultTimeout()
@@ -845,7 +844,7 @@ USER bin`, BB)
 	"stage" : [ "prestart" ]
 }
 `, hookScriptPath)
-		err = ioutil.WriteFile(hookJSONPath, []byte(hookJSON), 0644)
+		err = os.WriteFile(hookJSONPath, []byte(hookJSON), 0644)
 		Expect(err).ToNot(HaveOccurred())
 
 		random := stringid.GenerateRandomID()
@@ -853,14 +852,14 @@ USER bin`, BB)
 		hookScript := fmt.Sprintf(`#!/bin/sh
 echo -n %s >%s
 `, random, targetFile)
-		err = ioutil.WriteFile(hookScriptPath, []byte(hookScript), 0755)
+		err = os.WriteFile(hookScriptPath, []byte(hookScript), 0755)
 		Expect(err).ToNot(HaveOccurred())
 
 		session := podmanTest.Podman([]string{"--hooks-dir", hooksDir, "run", ALPINE, "ls"})
 		session.Wait(10)
 		Expect(session).Should(Exit(0))
 
-		b, err := ioutil.ReadFile(targetFile)
+		b, err := os.ReadFile(targetFile)
 		Expect(err).ToNot(HaveOccurred())
 		Expect(string(b)).To(Equal(random))
 	})
@@ -877,19 +876,19 @@ echo -n %s >%s
 
 		mountsFile := filepath.Join(containersDir, "mounts.conf")
 		mountString := secretsDir + ":/run/secrets"
-		err = ioutil.WriteFile(mountsFile, []byte(mountString), 0755)
+		err = os.WriteFile(mountsFile, []byte(mountString), 0755)
 		Expect(err).To(BeNil())
 
 		secretsFile := filepath.Join(secretsDir, "test.txt")
 		secretsString := "Testing secrets mount. I am mounted!"
-		err = ioutil.WriteFile(secretsFile, []byte(secretsString), 0755)
+		err = os.WriteFile(secretsFile, []byte(secretsString), 0755)
 		Expect(err).To(BeNil())
 
 		targetDir := tempdir + "/symlink/target"
 		err = os.MkdirAll(targetDir, 0755)
 		Expect(err).To(BeNil())
 		keyFile := filepath.Join(targetDir, "key.pem")
-		err = ioutil.WriteFile(keyFile, []byte(mountString), 0755)
+		err = os.WriteFile(keyFile, []byte(mountString), 0755)
 		Expect(err).To(BeNil())
 		execSession := SystemExec("ln", []string{"-s", targetDir, filepath.Join(secretsDir, "mysymlink")})
 		Expect(execSession).Should(Exit(0))
@@ -908,7 +907,7 @@ echo -n %s >%s
 	It("podman run with FIPS mode secrets", func() {
 		SkipIfRootless("rootless can not manipulate system-fips file")
 		fipsFile := "/etc/system-fips"
-		err = ioutil.WriteFile(fipsFile, []byte{}, 0755)
+		err = os.WriteFile(fipsFile, []byte{}, 0755)
 		Expect(err).To(BeNil())
 
 		session := podmanTest.Podman([]string{"run", "--rm", ALPINE, "ls", "/run/secrets"})
@@ -1070,7 +1069,7 @@ USER mail`, BB)
 		filename := "test.txt"
 		volFile := filepath.Join(vol, filename)
 		data := "Testing --volumes-from!!!"
-		err = ioutil.WriteFile(volFile, []byte(data), 0755)
+		err = os.WriteFile(volFile, []byte(data), 0755)
 		Expect(err).To(BeNil())
 		mountpoint := "/myvol/"
 
@@ -1102,7 +1101,7 @@ USER mail`, BB)
 		filename := "test.txt"
 		volFile := filepath.Join(vol, filename)
 		data := "Testing --volumes-from!!!"
-		err = ioutil.WriteFile(volFile, []byte(data), 0755)
+		err = os.WriteFile(volFile, []byte(data), 0755)
 		Expect(err).To(BeNil())
 		mountpoint := "/myvol/"
 
@@ -1469,7 +1468,7 @@ USER mail`, BB)
 			return strings.TrimSuffix(i, "\n")
 		}
 
-		curCgroupsBytes, err := ioutil.ReadFile("/proc/self/cgroup")
+		curCgroupsBytes, err := os.ReadFile("/proc/self/cgroup")
 		Expect(err).ShouldNot(HaveOccurred())
 		curCgroups := trim(string(curCgroupsBytes))
 		fmt.Printf("Output:\n%s\n", curCgroups)
@@ -1492,7 +1491,7 @@ USER mail`, BB)
 			Skip("Test only works on crun")
 		}
 
-		curCgroupsBytes, err := ioutil.ReadFile("/proc/self/cgroup")
+		curCgroupsBytes, err := os.ReadFile("/proc/self/cgroup")
 		Expect(err).To(BeNil())
 		var curCgroups string = string(curCgroupsBytes)
 		fmt.Printf("Output:\n%s\n", curCgroups)
@@ -1509,7 +1508,7 @@ USER mail`, BB)
 		pid := inspectOut[0].State.Pid
 		Expect(pid).To(Not(Equal(0)))
 
-		ctrCgroupsBytes, err := ioutil.ReadFile(fmt.Sprintf("/proc/%d/cgroup", pid))
+		ctrCgroupsBytes, err := os.ReadFile(fmt.Sprintf("/proc/%d/cgroup", pid))
 		Expect(err).To(BeNil())
 		var ctrCgroups string = string(ctrCgroupsBytes)
 		fmt.Printf("Output\n:%s\n", ctrCgroups)
@@ -1740,7 +1739,7 @@ WORKDIR /madethis`, BB)
 	It("podman run --secret", func() {
 		secretsString := "somesecretdata"
 		secretFilePath := filepath.Join(podmanTest.TempDir, "secret")
-		err := ioutil.WriteFile(secretFilePath, []byte(secretsString), 0755)
+		err := os.WriteFile(secretFilePath, []byte(secretsString), 0755)
 		Expect(err).To(BeNil())
 
 		session := podmanTest.Podman([]string{"secret", "create", "mysecret", secretFilePath})
@@ -1762,7 +1761,7 @@ WORKDIR /madethis`, BB)
 	It("podman run --secret source=mysecret,type=mount", func() {
 		secretsString := "somesecretdata"
 		secretFilePath := filepath.Join(podmanTest.TempDir, "secret")
-		err := ioutil.WriteFile(secretFilePath, []byte(secretsString), 0755)
+		err := os.WriteFile(secretFilePath, []byte(secretsString), 0755)
 		Expect(err).To(BeNil())
 
 		session := podmanTest.Podman([]string{"secret", "create", "mysecret", secretFilePath})
@@ -1784,7 +1783,7 @@ WORKDIR /madethis`, BB)
 	It("podman run --secret source=mysecret,type=mount with target", func() {
 		secretsString := "somesecretdata"
 		secretFilePath := filepath.Join(podmanTest.TempDir, "secret")
-		err := ioutil.WriteFile(secretFilePath, []byte(secretsString), 0755)
+		err := os.WriteFile(secretFilePath, []byte(secretsString), 0755)
 		Expect(err).To(BeNil())
 
 		session := podmanTest.Podman([]string{"secret", "create", "mysecret_target", secretFilePath})
@@ -1806,7 +1805,7 @@ WORKDIR /madethis`, BB)
 	It("podman run --secret source=mysecret,type=mount with target at /tmp", func() {
 		secretsString := "somesecretdata"
 		secretFilePath := filepath.Join(podmanTest.TempDir, "secret")
-		err := ioutil.WriteFile(secretFilePath, []byte(secretsString), 0755)
+		err := os.WriteFile(secretFilePath, []byte(secretsString), 0755)
 		Expect(err).To(BeNil())
 
 		session := podmanTest.Podman([]string{"secret", "create", "mysecret_target2", secretFilePath})
@@ -1828,7 +1827,7 @@ WORKDIR /madethis`, BB)
 	It("podman run --secret source=mysecret,type=env", func() {
 		secretsString := "somesecretdata"
 		secretFilePath := filepath.Join(podmanTest.TempDir, "secret")
-		err := ioutil.WriteFile(secretFilePath, []byte(secretsString), 0755)
+		err := os.WriteFile(secretFilePath, []byte(secretsString), 0755)
 		Expect(err).To(BeNil())
 
 		session := podmanTest.Podman([]string{"secret", "create", "mysecret", secretFilePath})
@@ -1844,7 +1843,7 @@ WORKDIR /madethis`, BB)
 	It("podman run --secret target option", func() {
 		secretsString := "somesecretdata"
 		secretFilePath := filepath.Join(podmanTest.TempDir, "secret")
-		err := ioutil.WriteFile(secretFilePath, []byte(secretsString), 0755)
+		err := os.WriteFile(secretFilePath, []byte(secretsString), 0755)
 		Expect(err).To(BeNil())
 
 		session := podmanTest.Podman([]string{"secret", "create", "mysecret", secretFilePath})
@@ -1860,7 +1859,7 @@ WORKDIR /madethis`, BB)
 	It("podman run --secret mount with uid, gid, mode options", func() {
 		secretsString := "somesecretdata"
 		secretFilePath := filepath.Join(podmanTest.TempDir, "secret")
-		err := ioutil.WriteFile(secretFilePath, []byte(secretsString), 0755)
+		err := os.WriteFile(secretFilePath, []byte(secretsString), 0755)
 		Expect(err).To(BeNil())
 
 		session := podmanTest.Podman([]string{"secret", "create", "mysecret", secretFilePath})
@@ -1887,7 +1886,7 @@ WORKDIR /madethis`, BB)
 	It("podman run --secret with --user", func() {
 		secretsString := "somesecretdata"
 		secretFilePath := filepath.Join(podmanTest.TempDir, "secret")
-		err := ioutil.WriteFile(secretFilePath, []byte(secretsString), 0755)
+		err := os.WriteFile(secretFilePath, []byte(secretsString), 0755)
 		Expect(err).To(BeNil())
 
 		session := podmanTest.Podman([]string{"secret", "create", "mysecret", secretFilePath})
@@ -1903,7 +1902,7 @@ WORKDIR /madethis`, BB)
 	It("podman run invalid secret option", func() {
 		secretsString := "somesecretdata"
 		secretFilePath := filepath.Join(podmanTest.TempDir, "secret")
-		err := ioutil.WriteFile(secretFilePath, []byte(secretsString), 0755)
+		err := os.WriteFile(secretFilePath, []byte(secretsString), 0755)
 		Expect(err).To(BeNil())
 
 		session := podmanTest.Podman([]string{"secret", "create", "mysecret", secretFilePath})
@@ -1968,7 +1967,7 @@ WORKDIR /madethis`, BB)
 		session.WaitWithDefaultTimeout()
 		Expect(session).Should(Exit(0))
 		readFirstLine := func(path string) string {
-			content, err := ioutil.ReadFile(path)
+			content, err := os.ReadFile(path)
 			Expect(err).To(BeNil())
 			return strings.Split(string(content), "\n")[0]
 		}

test/e2e/run_userns_test.go

@@ -2,7 +2,6 @@ package integration
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"os/user"
 	"strings"
@@ -55,7 +54,7 @@ var _ = Describe("Podman UserNS support", func() {
 		if name == "root" {
 			name = "containers"
 		}
-		content, err := ioutil.ReadFile("/etc/subuid")
+		content, err := os.ReadFile("/etc/subuid")
 		if err != nil {
 			Skip("cannot read /etc/subuid")
 		}
@@ -181,7 +180,7 @@ var _ = Describe("Podman UserNS support", func() {
 			name = "containers"
 		}
 
-		content, err := ioutil.ReadFile("/etc/subuid")
+		content, err := os.ReadFile("/etc/subuid")
 		if err != nil {
 			Skip("cannot read /etc/subuid")
 		}
@@ -213,7 +212,7 @@ var _ = Describe("Podman UserNS support", func() {
 			name = "containers"
 		}
 
-		content, err := ioutil.ReadFile("/etc/subuid")
+		content, err := os.ReadFile("/etc/subuid")
 		if err != nil {
 			Skip("cannot read /etc/subuid")
 		}
@@ -251,7 +250,7 @@ var _ = Describe("Podman UserNS support", func() {
 			name = "containers"
 		}
 
-		content, err := ioutil.ReadFile("/etc/subuid")
+		content, err := os.ReadFile("/etc/subuid")
 		if err != nil {
 			Skip("cannot read /etc/subuid")
 		}
@@ -280,7 +279,7 @@ var _ = Describe("Podman UserNS support", func() {
 			name = "containers"
 		}
 
-		content, err := ioutil.ReadFile("/etc/subuid")
+		content, err := os.ReadFile("/etc/subuid")
 		if err != nil {
 			Skip("cannot read /etc/subuid")
 		}

test/e2e/run_volume_test.go

@@ -2,7 +2,6 @@ package integration
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"os/user"
@@ -768,7 +767,7 @@ VOLUME /test/`, ALPINE)
 			name = "containers"
 		}
 
-		content, err := ioutil.ReadFile("/etc/subuid")
+		content, err := os.ReadFile("/etc/subuid")
 		if err != nil {
 			Skip("cannot read /etc/subuid")
 		}
@@ -815,7 +814,7 @@ VOLUME /test/`, ALPINE)
 			name = "containers"
 		}
 
-		content, err := ioutil.ReadFile("/etc/subuid")
+		content, err := os.ReadFile("/etc/subuid")
 		if err != nil {
 			Skip("cannot read /etc/subuid")
 		}

test/e2e/save_test.go

@@ -1,7 +1,6 @@
 package integration
 
 import (
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -185,7 +184,7 @@ default-docker:
   sigstore: file:///var/lib/containers/sigstore
   sigstore-staging: file:///var/lib/containers/sigstore
 `
-		Expect(ioutil.WriteFile("/etc/containers/registries.d/default.yaml", []byte(sigstore), 0755)).To(BeNil())
+		Expect(os.WriteFile("/etc/containers/registries.d/default.yaml", []byte(sigstore), 0755)).To(BeNil())
 
 		session = podmanTest.Podman([]string{"tag", ALPINE, "localhost:5000/alpine"})
 		session.WaitWithDefaultTimeout()

test/e2e/search_test.go

@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"strconv"
 	"text/template"
@@ -288,7 +287,7 @@ registries = ['{{.Host}}:{{.Port}}']`
 		err = registryFileTmpl.Execute(&buffer, ep)
 		Expect(err).ToNot(HaveOccurred())
 		podmanTest.setRegistriesConfigEnv(buffer.Bytes())
-		err = ioutil.WriteFile(fmt.Sprintf("%s/registry4.conf", tempdir), buffer.Bytes(), 0644)
+		err = os.WriteFile(fmt.Sprintf("%s/registry4.conf", tempdir), buffer.Bytes(), 0644)
 		Expect(err).ToNot(HaveOccurred())
 		if IsRemote() {
 			podmanTest.RestartRemoteService()
@@ -332,7 +331,7 @@ registries = ['{{.Host}}:{{.Port}}']`
 		err = registryFileTmpl.Execute(&buffer, ep)
 		Expect(err).ToNot(HaveOccurred())
 		podmanTest.setRegistriesConfigEnv(buffer.Bytes())
-		err = ioutil.WriteFile(fmt.Sprintf("%s/registry5.conf", tempdir), buffer.Bytes(), 0644)
+		err = os.WriteFile(fmt.Sprintf("%s/registry5.conf", tempdir), buffer.Bytes(), 0644)
 		Expect(err).ToNot(HaveOccurred())
 
 		search := podmanTest.Podman([]string{"search", image, "--tls-verify=true"})
@@ -372,7 +371,7 @@ registries = ['{{.Host}}:{{.Port}}']`
 		err = registryFileBadTmpl.Execute(&buffer, ep)
 		Expect(err).ToNot(HaveOccurred())
 		podmanTest.setRegistriesConfigEnv(buffer.Bytes())
-		err = ioutil.WriteFile(fmt.Sprintf("%s/registry6.conf", tempdir), buffer.Bytes(), 0644)
+		err = os.WriteFile(fmt.Sprintf("%s/registry6.conf", tempdir), buffer.Bytes(), 0644)
 		Expect(err).ToNot(HaveOccurred())
 
 		if IsRemote() {
@@ -428,7 +427,7 @@ registries = ['{{.Host}}:{{.Port}}']`
 		err = registryFileTwoTmpl.Execute(&buffer, ep3)
 		Expect(err).ToNot(HaveOccurred())
 		podmanTest.setRegistriesConfigEnv(buffer.Bytes())
-		err = ioutil.WriteFile(fmt.Sprintf("%s/registry8.conf", tempdir), buffer.Bytes(), 0644)
+		err = os.WriteFile(fmt.Sprintf("%s/registry8.conf", tempdir), buffer.Bytes(), 0644)
 		Expect(err).ToNot(HaveOccurred())
 
 		if IsRemote() {

test/e2e/secret_test.go

@@ -2,7 +2,6 @@ package integration
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
@@ -37,7 +36,7 @@ var _ = Describe("Podman secret", func() {
 
 	It("podman secret create", func() {
 		secretFilePath := filepath.Join(podmanTest.TempDir, "secret")
-		err := ioutil.WriteFile(secretFilePath, []byte("mysecret"), 0755)
+		err := os.WriteFile(secretFilePath, []byte("mysecret"), 0755)
 		Expect(err).To(BeNil())
 
 		session := podmanTest.Podman([]string{"secret", "create", "-d", "file", "--driver-opts", "opt1=val", "a", secretFilePath})
@@ -57,7 +56,7 @@ var _ = Describe("Podman secret", func() {
 
 	It("podman secret create bad name should fail", func() {
 		secretFilePath := filepath.Join(podmanTest.TempDir, "secret")
-		err := ioutil.WriteFile(secretFilePath, []byte("mysecret"), 0755)
+		err := os.WriteFile(secretFilePath, []byte("mysecret"), 0755)
 		Expect(err).To(BeNil())
 
 		session := podmanTest.Podman([]string{"secret", "create", "?!", secretFilePath})
@@ -67,7 +66,7 @@ var _ = Describe("Podman secret", func() {
 
 	It("podman secret inspect", func() {
 		secretFilePath := filepath.Join(podmanTest.TempDir, "secret")
-		err := ioutil.WriteFile(secretFilePath, []byte("mysecret"), 0755)
+		err := os.WriteFile(secretFilePath, []byte("mysecret"), 0755)
 		Expect(err).To(BeNil())
 
 		session := podmanTest.Podman([]string{"secret", "create", "a", secretFilePath})
@@ -83,7 +82,7 @@ var _ = Describe("Podman secret", func() {
 
 	It("podman secret inspect with --format", func() {
 		secretFilePath := filepath.Join(podmanTest.TempDir, "secret")
-		err := ioutil.WriteFile(secretFilePath, []byte("mysecret"), 0755)
+		err := os.WriteFile(secretFilePath, []byte("mysecret"), 0755)
 		Expect(err).To(BeNil())
 
 		session := podmanTest.Podman([]string{"secret", "create", "a", secretFilePath})
@@ -99,7 +98,7 @@ var _ = Describe("Podman secret", func() {
 
 	It("podman secret inspect multiple secrets", func() {
 		secretFilePath := filepath.Join(podmanTest.TempDir, "secret")
-		err := ioutil.WriteFile(secretFilePath, []byte("mysecret"), 0755)
+		err := os.WriteFile(secretFilePath, []byte("mysecret"), 0755)
 		Expect(err).To(BeNil())
 
 		session := podmanTest.Podman([]string{"secret", "create", "a", secretFilePath})
@@ -120,7 +119,7 @@ var _ = Describe("Podman secret", func() {
 
 	It("podman secret inspect bogus", func() {
 		secretFilePath := filepath.Join(podmanTest.TempDir, "secret")
-		err := ioutil.WriteFile(secretFilePath, []byte("mysecret"), 0755)
+		err := os.WriteFile(secretFilePath, []byte("mysecret"), 0755)
 		Expect(err).To(BeNil())
 
 		inspect := podmanTest.Podman([]string{"secret", "inspect", "bogus"})
@@ -131,7 +130,7 @@ var _ = Describe("Podman secret", func() {
 
 	It("podman secret ls", func() {
 		secretFilePath := filepath.Join(podmanTest.TempDir, "secret")
-		err := ioutil.WriteFile(secretFilePath, []byte("mysecret"), 0755)
+		err := os.WriteFile(secretFilePath, []byte("mysecret"), 0755)
 		Expect(err).To(BeNil())
 
 		session := podmanTest.Podman([]string{"secret", "create", "a", secretFilePath})
@@ -147,7 +146,7 @@ var _ = Describe("Podman secret", func() {
 
 	It("podman secret ls --quiet", func() {
 		secretFilePath := filepath.Join(podmanTest.TempDir, "secret")
-		err := ioutil.WriteFile(secretFilePath, []byte("mysecret"), 0755)
+		err := os.WriteFile(secretFilePath, []byte("mysecret"), 0755)
 		Expect(err).To(BeNil())
 
 		secretName := "a"
@@ -177,7 +176,7 @@ var _ = Describe("Podman secret", func() {
 
 	It("podman secret ls with filters", func() {
 		secretFilePath := filepath.Join(podmanTest.TempDir, "secret")
-		err := ioutil.WriteFile(secretFilePath, []byte("mysecret"), 0755)
+		err := os.WriteFile(secretFilePath, []byte("mysecret"), 0755)
 		Expect(err).To(BeNil())
 
 		secret1 := "Secret1"
@@ -231,7 +230,7 @@ var _ = Describe("Podman secret", func() {
 
 	It("podman secret ls with Go template", func() {
 		secretFilePath := filepath.Join(podmanTest.TempDir, "secret")
-		err := ioutil.WriteFile(secretFilePath, []byte("mysecret"), 0755)
+		err := os.WriteFile(secretFilePath, []byte("mysecret"), 0755)
 		Expect(err).To(BeNil())
 
 		session := podmanTest.Podman([]string{"secret", "create", "a", secretFilePath})
@@ -247,7 +246,7 @@ var _ = Describe("Podman secret", func() {
 
 	It("podman secret rm", func() {
 		secretFilePath := filepath.Join(podmanTest.TempDir, "secret")
-		err := ioutil.WriteFile(secretFilePath, []byte("mysecret"), 0755)
+		err := os.WriteFile(secretFilePath, []byte("mysecret"), 0755)
 		Expect(err).To(BeNil())
 
 		session := podmanTest.Podman([]string{"secret", "create", "a", secretFilePath})
@@ -268,7 +267,7 @@ var _ = Describe("Podman secret", func() {
 
 	It("podman secret rm --all", func() {
 		secretFilePath := filepath.Join(podmanTest.TempDir, "secret")
-		err := ioutil.WriteFile(secretFilePath, []byte("mysecret"), 0755)
+		err := os.WriteFile(secretFilePath, []byte("mysecret"), 0755)
 		Expect(err).To(BeNil())
 
 		session := podmanTest.Podman([]string{"secret", "create", "a", secretFilePath})

test/e2e/start_test.go

@@ -2,7 +2,6 @@ package integration
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"strconv"
 	"strings"
@@ -204,7 +203,7 @@ var _ = Describe("Podman start", func() {
 		session.WaitWithDefaultTimeout()
 		Expect(session).Should(Exit(0))
 		readFirstLine := func(path string) string {
-			content, err := ioutil.ReadFile(path)
+			content, err := os.ReadFile(path)
 			Expect(err).To(BeNil())
 			return strings.Split(string(content), "\n")[0]
 		}

test/e2e/stop_test.go

@@ -2,7 +2,6 @@ package integration
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"strings"
 
@@ -276,7 +275,7 @@ var _ = Describe("Podman stop", func() {
 
 	It("podman stop --cidfile", func() {
 
-		tmpDir, err := ioutil.TempDir("", "")
+		tmpDir, err := os.MkdirTemp("", "")
 		Expect(err).To(BeNil())
 		tmpFile := tmpDir + "cid"
 
@@ -300,7 +299,7 @@ var _ = Describe("Podman stop", func() {
 
 	It("podman stop multiple --cidfile", func() {
 
-		tmpDir, err := ioutil.TempDir("", "")
+		tmpDir, err := os.MkdirTemp("", "")
 		Expect(err).To(BeNil())
 		tmpFile1 := tmpDir + "cid-1"
 		tmpFile2 := tmpDir + "cid-2"

test/e2e/system_connection_test.go

@@ -2,7 +2,6 @@ package integration
 
 import (
 	"fmt"
-	"io/ioutil"
 	"net/url"
 	"os"
 	"os/exec"
@@ -27,7 +26,7 @@ var _ = Describe("podman system connection", func() {
 
 	BeforeEach(func() {
 		ConfPath.Value, ConfPath.IsSet = os.LookupEnv("CONTAINERS_CONF")
-		conf, err := ioutil.TempFile("", "containersconf")
+		conf, err := os.CreateTemp("", "containersconf")
 		Expect(err).ToNot(HaveOccurred())
 		os.Setenv("CONTAINERS_CONF", conf.Name())
 

test/e2e/system_service_test.go

@@ -1,7 +1,7 @@
 package integration
 
 import (
-	"io/ioutil"
+	"io"
 	"net"
 	"net/http"
 	"net/url"
@@ -89,7 +89,7 @@ var _ = Describe("podman system service", func() {
 			defer resp.Body.Close()
 			Expect(resp).To(HaveHTTPStatus(http.StatusOK))
 
-			body, err := ioutil.ReadAll(resp.Body)
+			body, err := io.ReadAll(resp.Body)
 			Expect(err).ShouldNot(HaveOccurred())
 			Expect(body).ShouldNot(BeEmpty())
 

test/e2e/systemd_test.go

@@ -2,7 +2,6 @@ package integration
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -51,7 +50,7 @@ WantedBy=default.target
 		SkipIfRootless("rootless can not write to /etc")
 		SkipIfContainerized("test does not have systemd as pid 1")
 
-		sysFile := ioutil.WriteFile("/etc/systemd/system/redis.service", []byte(systemdUnitFile), 0644)
+		sysFile := os.WriteFile("/etc/systemd/system/redis.service", []byte(systemdUnitFile), 0644)
 		Expect(sysFile).To(BeNil())
 		defer func() {
 			stop := SystemExec("bash", []string{"-c", "systemctl stop redis"})
@@ -137,7 +136,7 @@ RUN mkdir -p /usr/lib/systemd/; touch /usr/lib/systemd/systemd
 CMD /usr/lib/systemd/systemd`, ALPINE)
 
 		containerfilePath := filepath.Join(podmanTest.TempDir, "Containerfile")
-		err := ioutil.WriteFile(containerfilePath, []byte(containerfile), 0755)
+		err := os.WriteFile(containerfilePath, []byte(containerfile), 0755)
 		Expect(err).To(BeNil())
 		session := podmanTest.Podman([]string{"build", "-t", "systemd", "--file", containerfilePath, podmanTest.TempDir})
 		session.WaitWithDefaultTimeout()
@@ -167,7 +166,7 @@ CMD /usr/lib/systemd/systemd`, ALPINE)
 		Expect(session).Should(Exit(0))
 
 		pidFile := strings.TrimSuffix(session.OutputToString(), "\n")
-		_, err := ioutil.ReadFile(pidFile)
+		_, err := os.ReadFile(pidFile)
 		Expect(err).To(BeNil())
 	})
 

test/e2e/trust_test.go

@@ -2,7 +2,6 @@ package integration
 
 import (
 	"encoding/json"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
@@ -57,7 +56,7 @@ var _ = Describe("Podman trust", func() {
 		session.WaitWithDefaultTimeout()
 		Expect(session).Should(Exit(0))
 		var teststruct map[string][]map[string]string
-		policyContent, err := ioutil.ReadFile(policyJSON)
+		policyContent, err := os.ReadFile(policyJSON)
 		if err != nil {
 			os.Exit(1)
 		}
@@ -111,7 +110,7 @@ var _ = Describe("Podman trust", func() {
 		session := podmanTest.Podman([]string{"image", "trust", "show", "--policypath", filepath.Join(INTEGRATION_ROOT, "test/policy.json"), "--raw"})
 		session.WaitWithDefaultTimeout()
 		Expect(session).Should(Exit(0))
-		contents, err := ioutil.ReadFile(filepath.Join(INTEGRATION_ROOT, "test/policy.json"))
+		contents, err := os.ReadFile(filepath.Join(INTEGRATION_ROOT, "test/policy.json"))
 		Expect(err).ShouldNot(HaveOccurred())
 		Expect(session.OutputToString()).To(BeValidJSON())
 		Expect(string(session.Out.Contents())).To(Equal(string(contents) + "\n"))

test/testvol/main.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"sync"
@@ -78,7 +77,7 @@ func startServer(socketPath string) error {
 	logrus.Debugf("Starting server...")
 
 	if config.path == "" {
-		path, err := ioutil.TempDir("", "test_volume_plugin")
+		path, err := os.MkdirTemp("", "test_volume_plugin")
 		if err != nil {
 			return fmt.Errorf("getting directory for plugin: %w", err)
 		}

test/utils/common_function_test.go

@@ -3,7 +3,7 @@ package utils_test
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"os"
 	"reflect"
 	"strings"
@@ -113,7 +113,7 @@ var _ = Describe("Common functions test", func() {
 		Expect(err).To(BeNil(), "Can not find the JSON file after we write it.")
 		defer read.Close()
 
-		bytes, err := ioutil.ReadAll(read)
+		bytes, err := io.ReadAll(read)
 		Expect(err).ToNot(HaveOccurred())
 		err = json.Unmarshal(bytes, compareData)
 		Expect(err).ToNot(HaveOccurred())

test/utils/utils.go

@@ -4,7 +4,6 @@ import (
 	"bufio"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
 	"math/rand"
 	"os"
 	"os/exec"
@@ -100,7 +99,7 @@ func (p *PodmanTest) PodmanAsUserBase(args []string, uid, gid uint32, cwd string
 	}
 
 	if timeDir := os.Getenv(EnvTimeDir); timeDir != "" {
-		timeFile, err := ioutil.TempFile(timeDir, ".time")
+		timeFile, err := os.CreateTemp(timeDir, ".time")
 		if err != nil {
 			Fail(fmt.Sprintf("Error creating time file: %v", err))
 		}
@@ -374,7 +373,7 @@ func (s *PodmanSession) WaitWithTimeout(timeout int) {
 
 // CreateTempDirInTempDir create a temp dir with prefix podman_test
 func CreateTempDirInTempDir() (string, error) {
-	return ioutil.TempDir("", "podman_test")
+	return os.MkdirTemp("", "podman_test")
 }
 
 // SystemExec is used to exec a system command to check its exit code or output
@@ -497,7 +496,7 @@ func WriteJSONFile(data []byte, filePath string) error {
 	if err != nil {
 		return err
 	}
-	return ioutil.WriteFile(filePath, formatJSON, 0644)
+	return os.WriteFile(filePath, formatJSON, 0644)
 }
 
 // Containerized check the podman command run inside container
@@ -506,7 +505,7 @@ func Containerized() bool {
 	if container != "" {
 		return true
 	}
-	b, err := ioutil.ReadFile(ProcessOneCgroupPath)
+	b, err := os.ReadFile(ProcessOneCgroupPath)
 	if err != nil {
 		// shrug, if we cannot read that file, return false
 		return false