From 501e8d313cd898bc427402141cc8edd6f56242aa Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B8rn=20Erik=20Pedersen?=
 <bjorn.erik.pedersen@gmail.com>
Date: Mon, 6 Mar 2023 10:18:15 +0100
Subject: [PATCH] Fix io.Seek* deprecation errors

---
 memmap.go      | 3 ++-
 memmap_test.go | 2 +-
 unionFile.go   | 2 +-
 3 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/memmap.go b/memmap.go
index 3f4ef42d..e6b7d70b 100644
--- a/memmap.go
+++ b/memmap.go
@@ -15,6 +15,7 @@ package afero
 
 import (
 	"fmt"
+	"io"
 	"log"
 	"os"
 	"path/filepath"
@@ -237,7 +238,7 @@ func (m *MemMapFs) OpenFile(name string, flag int, perm os.FileMode) (File, erro
 		file = mem.NewReadOnlyFileHandle(file.(*mem.File).Data())
 	}
 	if flag&os.O_APPEND > 0 {
-		_, err = file.Seek(0, os.SEEK_END)
+		_, err = file.Seek(0, io.SeekEnd)
 		if err != nil {
 			file.Close()
 			return nil, err
diff --git a/memmap_test.go b/memmap_test.go
index ee75672c..52a492e8 100644
--- a/memmap_test.go
+++ b/memmap_test.go
@@ -226,7 +226,7 @@ func TestMultipleOpenFiles(t *testing.T) {
 		if err != nil {
 			t.Error("fs.OpenFile failed: " + err.Error())
 		}
-		_, err = fh2.Seek(0, os.SEEK_END)
+		_, err = fh2.Seek(0, io.SeekEnd)
 		if err != nil {
 			t.Error(err)
 		}
diff --git a/unionFile.go b/unionFile.go
index f02e7553..62dd6c93 100644
--- a/unionFile.go
+++ b/unionFile.go
@@ -47,7 +47,7 @@ func (f *UnionFile) Read(s []byte) (int, error) {
 		if (err == nil || err == io.EOF) && f.Base != nil {
 			// advance the file position also in the base file, the next
 			// call may be a write at this position (or a seek with SEEK_CUR)
-			if _, seekErr := f.Base.Seek(int64(n), os.SEEK_CUR); seekErr != nil {
+			if _, seekErr := f.Base.Seek(int64(n), io.SeekCurrent); seekErr != nil {
 				// only overwrite err in case the seek fails: we need to
 				// report an eventual io.EOF to the caller
 				err = seekErr