1 files changed, 105 insertions, 0 deletions
diff --git a/err.c b/err.c
new file mode 100644
index 0000000..84b7a44
--- /dev/null
+++ b/err.c
@@ -0,0 +1,105 @@
+/*
+ * err.c
+ *
+ * Adapted from OpenBSD libc *err* *warn* code.
+ *
+ * Copyright (c) 2000 Dug Song <dugsong@monkey.org>
+ *
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * 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 University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ */
+
+#include <sys/types.h>
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <errno.h>
+
+void
+err(int eval, const char *fmt, ...)
+{
+	va_list ap;
+	
+	va_start(ap, fmt);
+	if (fmt != NULL) {
+		(void)vfprintf(stderr, fmt, ap);
+		(void)fprintf(stderr, ": ");
+	}
+	va_end(ap);
+	(void)fprintf(stderr, "%s\n", strerror(errno));
+	exit(eval);
+}
+
+void
+warn(const char *fmt, ...)
+{
+	va_list ap;
+	
+	va_start(ap, fmt);
+	if (fmt != NULL) {
+		(void)vfprintf(stderr, fmt, ap);
+		(void)fprintf(stderr, ": ");
+	}
+	va_end(ap);
+	(void)fprintf(stderr, "%s\n", strerror(errno));
+}
+
+void
+errx(int eval, const char *fmt, ...)
+{
+	va_list ap;
+	
+	va_start(ap, fmt);
+	if (fmt != NULL)
+		(void)vfprintf(stderr, fmt, ap);
+	(void)fprintf(stderr, "\n");
+	va_end(ap);
+	exit(eval);
+}
+
+void
+warnx(const char *fmt, ...)
+{
+	va_list ap;
+	
+	va_start(ap, fmt);
+	if (fmt != NULL)
+		(void)vfprintf(stderr, fmt, ap);
+        (void)fprintf(stderr, "\n");
+	va_end(ap);
+}
+