Add our own "strerror()", which we use on platforms that don't have it

in the standard libraries (such as SunOS 4.x).

svn path=/trunk/; revision=312

1 files changed, 42 insertions, 0 deletions

diff --git a/strerror.c b/strerror.c
new file mode 100644
index 0000000000..4f7a136ca9
--- /dev/null
+++ b/strerror.c
@@ -0,0 +1,42 @@
+/* strerror.c
+ *
+ * $Id: strerror.c,v 1.1 1999/06/14 21:46:36 guy Exp $
+ *
+ * Ethereal - Network traffic analyzer
+ * By Gerald Combs <gerald@zing.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#include "strerror.h"
+
+/*
+ * Version of "strerror()", for the benefit of OSes that don't have it
+ * (e.g., SunOS 4.x).
+ */
+char *
+strerror(int errnum)
+{
+	extern int sys_nerr;
+	extern char *sys_errlist[];
+	static char errbuf[5+1+11+1];	/* "Error %d" */
+
+	if (errnum < 0 || errnum >= sys_nerr) {
+		sprintf(errbuf, "Error %d", errnum);
+		return errbuf;
+	} else
+		return sys_errlist[errnum];
+}