From ab1ad50d8022978012ec6f54d07b9e7d9eab599e Mon Sep 17 00:00:00 2001
From: mlelstv <mlelstv@NetBSD.org>
Date: Fri, 26 Jan 2024 07:10:04 +0000
Subject: [PATCH] Don't use the signal handler to terminate when nothing is to
 do (count=0, files=0).

The signal handler tries to raise the signal again, so that a parent can retrieve
the signal from the exit code. Calling the terminate handler with signal code 0
doesn't raise a signal and dd continues with exit(127) making this case an error.
---
 bin/dd/args.c | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/bin/dd/args.c b/bin/dd/args.c
index a6612702fea4..c3bb645ef9e6 100644
--- a/bin/dd/args.c
+++ b/bin/dd/args.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: args.c,v 1.42 2022/01/14 23:55:16 christos Exp $	*/
+/*	$NetBSD: args.c,v 1.43 2024/01/26 07:10:04 mlelstv Exp $	*/
 
 /*-
  * Copyright (c) 1991, 1993, 1994
@@ -38,7 +38,7 @@
 #if 0
 static char sccsid[] = "@(#)args.c	8.3 (Berkeley) 4/2/94";
 #else
-__RCSID("$NetBSD: args.c,v 1.42 2022/01/14 23:55:16 christos Exp $");
+__RCSID("$NetBSD: args.c,v 1.43 2024/01/26 07:10:04 mlelstv Exp $");
 #endif
 #endif /* not lint */
 
@@ -248,8 +248,10 @@ f_count(char *arg)
 {
 
 	cpy_cnt = strsuftoll("block count", arg, 0, LLONG_MAX);
-	if (!cpy_cnt)
-		terminate(0);
+	if (!cpy_cnt) {
+		summary();
+		exit(0);
+	}
 }
 
 static void
@@ -257,8 +259,10 @@ f_files(char *arg)
 {
 
 	files_cnt = (u_int)strsuftoll("file count", arg, 0, UINT_MAX);
-	if (!files_cnt)
-		terminate(0);
+	if (!files_cnt) {
+		summary();
+		exit(0);
+	}
 }
 
 static void