Stop using deprecated package io/ioutil

Since Go 1.16 (which recently became the minimum supported Go version
for this project), the package io/ioutil is deprecated in favor of
equivalent functionality in the io and os packages.  staticcheck warns
about this.  Address all the warnings by switching to the non-deprecated
replacement functions.

1 files changed, 3 insertions, 4 deletions

diff --git a/filesystem/filesystem_test.go b/filesystem/filesystem_test.go
index 79fb133..f9c34ae 100644
--- a/filesystem/filesystem_test.go
+++ b/filesystem/filesystem_test.go
@@ -20,7 +20,6 @@
 package filesystem
 
 import (
-	"io/ioutil"
 	"os"
 	"os/user"
 	"path/filepath"
@@ -172,7 +171,7 @@ func TestSetupWithAbsoluteSymlink(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	tempDir, err := ioutil.TempDir("", "fscrypt")
+	tempDir, err := os.MkdirTemp("", "fscrypt")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -519,7 +518,7 @@ func TestLinkedProtector(t *testing.T) {
 }
 
 func createFile(path string, size int64) error {
-	if err := ioutil.WriteFile(path, []byte{}, 0600); err != nil {
+	if err := os.WriteFile(path, []byte{}, 0600); err != nil {
 		return err
 	}
 	return os.Truncate(path, size)
@@ -532,7 +531,7 @@ func TestReadMetadataFileSafe(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	tempDir, err := ioutil.TempDir("", "fscrypt")
+	tempDir, err := os.MkdirTemp("", "fscrypt")
 	if err != nil {
 		t.Fatal(err)
 	}