repository: add SIGHUP handler only on Unix systems

internal/repository/lock_file.go

@@ -4,10 +4,8 @@ import (
 	"context"
 	"fmt"
 	"os"
-	"os/signal"
 	"os/user"
 	"sync"
-	"syscall"
 	"testing"
 	"time"
 
@@ -409,21 +407,6 @@ func (l *lockHandle) String() string {
 	return text
 }
 
-// listen for incoming SIGHUP and ignore
-var ignoreSIGHUP sync.Once
-
-func init() {
-	ignoreSIGHUP.Do(func() {
-		go func() {
-			c := make(chan os.Signal, 1)
-			signal.Notify(c, syscall.SIGHUP)
-			for s := range c {
-				debug.Log("Signal received: %v\n", s)
-			}
-		}()
-	})
-}
-
 // LoadLock loads and unserializes a lock from a repository.
 func LoadLock(ctx context.Context, repo restic.LoaderUnpacked, id restic.ID) (Lock, error) {
 	var lock Lock

internal/repository/lock_file_unix.go

@@ -4,11 +4,28 @@ package repository
 
 import (
 	"os"
+	"os/signal"
+	"sync"
 	"syscall"
 
 	"github.com/restic/restic/internal/debug"
 )
 
+// listen for incoming SIGHUP and ignore
+var ignoreSIGHUP sync.Once
+
+func init() {
+	ignoreSIGHUP.Do(func() {
+		go func() {
+			c := make(chan os.Signal, 1)
+			signal.Notify(c, syscall.SIGHUP)
+			for s := range c {
+				debug.Log("Signal received: %v\n", s)
+			}
+		}()
+	})
+}
+
 // checkProcess will check if the process retaining the lock
 // exists and responds to SIGHUP signal.
 // Returns true if the process exists and responds.