Move away from ioutil now that it is deprecated

cmd/zed/schema.go

@@ -5,7 +5,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"os"
 	"strings"
 
@@ -142,7 +142,7 @@ func schemaWriteCmdFunc(cmd *cobra.Command, args []string) error {
 		}
 		log.Trace().Str("schema", string(schemaBytes)).Str("file", args[0]).Msg("read schema from file")
 	case 0:
-		schemaBytes, err = ioutil.ReadAll(os.Stdin)
+		schemaBytes, err = io.ReadAll(os.Stdin)
 		if err != nil {
 			return fmt.Errorf("failed to read schema file: %w", err)
 		}

internal/storage/config.go

@@ -3,7 +3,6 @@ package storage
 import (
 	"encoding/json"
 	"errors"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"runtime"
@@ -137,7 +136,7 @@ func (s JSONConfigStore) Put(cfg Config) error {
 // at the following URL:
 // https://github.com/tailscale/tailscale/blob/main/LICENSE
 func atomicWriteFile(filename string, data []byte, perm os.FileMode) (err error) {
-	f, err := ioutil.TempFile(filepath.Dir(filename), filepath.Base(filename)+".tmp")
+	f, err := os.CreateTemp(filepath.Dir(filename), filepath.Base(filename)+".tmp")
 	if err != nil {
 		return err
 	}