[src/trunk]: src/sys/kern Refactor the numeric validity check just added, so ...

[kre <kre%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/db16507d227d
branches:  trunk
changeset: 992355:db16507d227d
user:      kre <kre%NetBSD.org@localhost>
date:      Sun Aug 26 11:53:28 2018 +0000

description:
Refactor the numeric validity check just added, so the error
messages can be (easily) done better.

diffstat:

 sys/kern/makesyscalls.sh |  12 +++++++++---
 1 files changed, 9 insertions(+), 3 deletions(-)

diffs (30 lines):

diff -r e3e3b7ec784c -r db16507d227d sys/kern/makesyscalls.sh
--- a/sys/kern/makesyscalls.sh  Sun Aug 26 11:48:00 2018 +0000
+++ b/sys/kern/makesyscalls.sh  Sun Aug 26 11:53:28 2018 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: makesyscalls.sh,v 1.171 2018/08/26 11:48:00 kre Exp $
+#      $NetBSD: makesyscalls.sh,v 1.172 2018/08/26 11:53:28 kre Exp $
 #
 # Copyright (c) 1994, 1996, 2000 Christopher G. Demetriou
 # All rights reserved.
@@ -78,12 +78,18 @@
 *)     . ./$1;;
 esac
 
+errmsg()
+{
+       fail=true;
+       printf '%s: %s\n' "$0" "$*" >&2
+}
+
 fail=false
 case "${nsysent:-0}" in
-*[!0-9]*) fail=true; printf >&2 '%s\n' "Non numeric value for nsysent";;
+*[!0-9]*)      errmsg "Non numeric value for nsysent:" "${nsysent}";;
 esac
 case "${maxsysargs:-0}" in
-*[!0-9]*) fail=true; printf >&2 '%s\n' "Non numeric value for maxsysargs";;
+*[!0-9]*)      errmsg "Non numeric value for maxsysargs:" "${maxsysargs}";;
 esac
 $fail && exit 1