From 91083d6e8625bd3ea1cf10014fe48ede0b14d174 Mon Sep 17 00:00:00 2001
From: christos <christos@NetBSD.org>
Date: Sun, 12 Dec 2010 20:08:27 +0000
Subject: [PATCH] Automatically generate the error list.

---
 lib/libc/gen/errlist.awk | 92 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 lib/libc/gen/errlist.awk

diff --git a/lib/libc/gen/errlist.awk b/lib/libc/gen/errlist.awk
new file mode 100644
index 000000000000..a75b930c2209
--- /dev/null
+++ b/lib/libc/gen/errlist.awk
@@ -0,0 +1,92 @@
+#! /usr/bin/awk -f
+#	$NetBSD: errlist.awk,v 1.1 2010/12/12 20:08:27 christos Exp $
+#
+# Copyright (c) 2010 The NetBSD Foundation, Inc.
+# All rights reserved.
+#
+# This code is derived from software contributed to The NetBSD Foundation
+# by Christos Zoulas.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. All advertising materials mentioning features or use of this software
+#    must display the following acknowledgement:
+#        This product includes software developed by the NetBSD
+#        Foundation, Inc. and its contributors.
+# 4. Neither the name of The NetBSD Foundation nor the names of its
+#    contributors may be used to endorse or promote products derived
+#    from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+function tabs(desc) {
+	l = length(desc) + 3;	/* 3 = ["",] */
+	if (l < 16)
+		return "\t\t\t\t";
+	else if (l < 24)
+		return "\t\t\t";
+	else if (l < 32)
+		return "\t\t";
+	else if (l < 40)
+		return "\t";
+	else
+		return "";
+}
+function perror(name, number, desc)
+{
+	printf("\t\"%s\",%s/* %d - %s */\n", desc, tabs(desc), number, name);
+}
+BEGIN {
+	printf("/* Automatically generated file; do not edit */\n");
+	printf("#include <sys/cdefs.h>\n");
+	printf("#if defined(LIBC_SCCS) && !defined(lint)\n");
+	printf("#if 0\n");
+	printf("static char sccsid[] = \"@(#)errlst.c	8.2 (Berkeley) 11/16/93\";\n");
+	printf("#else\n");
+	printf("__RCSID(\"$NetBSD: errlist.awk,v 1.1 2010/12/12 20:08:27 christos Exp $\");\n");
+	printf("#endif\n");
+	printf("#endif /* LIBC_SCCS and not lint */\n\n");
+	printf("#include <errno.h>\n");
+	printf("static const char *const errlist[] = {\n");
+	perror("ENOERROR", 0, "Undefined error: 0");
+	errno = 1;
+}
+/^#define/ {
+	name = $2;
+	if (name == "ELAST")
+		next;
+	number = $3;
+	if (number < 0 || number == "EAGAIN")
+		next;
+	desc = $0;
+	i1 = index(desc, "/*") + 3;
+	l = length(desc);
+	desc = substr(desc, i1, l - i1 - 2);
+	if (number != errno) {
+		printf("error number mismatch %d != %d\n", number, errno) > "/dev/stderr";
+		exit(1);
+	}
+	perror(name, number, desc);
+	errno++;
+}
+END {
+	printf("};\n\n");
+	printf("const int sys_nerr = sizeof(errlist) / sizeof(errlist[0]);\n");
+	printf("const char * const *sys_errlist = errlist;\n");
+}