Merging upstream version 1.6.

Signed-off-by: Daniel Baumann <daniel@debian.org>

test/ioctl/util.c

@@ -0,0 +1,65 @@
+// SPDX-License-Identifier: LGPL-2.1-or-later
+
+#include "util.h"
+
+#include <stdarg.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static void hexdump(const uint8_t *buf, size_t len)
+{
+	size_t i = 0;
+
+	if (!len)
+		return;
+
+	for (;;) {
+		fprintf(stderr, "%02X", buf[i++]);
+		if (i >= len)
+			break;
+
+		fputc(i % 16 > 0 ? ' ' : '\n', stderr);
+	}
+	fputc('\n', stderr);
+}
+
+void fail(const char *fmt, ...)
+{
+	va_list args;
+
+	va_start(args, fmt);
+	vfprintf(stderr, fmt, args);
+	va_end(args);
+	fputc('\n', stderr);
+	abort();
+}
+
+void cmp(const void *actual, const void *expected, size_t len, const char *msg)
+{
+	if (memcmp(actual, expected, len) == 0)
+		return;
+
+	fputs(msg, stderr);
+	fputs("\nactual:\n", stderr);
+	hexdump(actual, len);
+	fputs("expected:\n", stderr);
+	hexdump(expected, len);
+	abort();
+}
+
+void arbitrary(void *buf_, size_t len)
+{
+	uint8_t *buf = buf_;
+
+	while (len--)
+		*(buf++) = rand();
+}
+
+size_t arbitrary_range(size_t max)
+{
+	size_t value;
+	arbitrary(&value, sizeof(value));
+	return value % max;
+}