Add a get_driver_settings debugging tool

src/bin/Jamfile

@@ -35,6 +35,7 @@ StdBinCommands
 	fortune.c
 	finddir.c
 	fstrim.cpp
+	get_driver_settings.cpp
 	hd.c
 	listarea.c
 	listimage.c

src/bin/get_driver_settings.cpp

@@ -0,0 +1,51 @@
+/*
+ * Copyright 2017, Haiku, Inc.
+ * Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ *		 <François Revol>
+ */
+
+#include <stdio.h>
+
+#include <driver_settings.h>
+
+static const char *sTabs = "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t";
+
+int usage(const char *progname)
+{
+	return 1;
+}
+
+void print_params(int indent, const driver_parameter *p)
+{
+	printf("indent: %d\n", indent);
+	printf("%.*s'%s': [", indent, sTabs, p->name);
+	for (int i = 0; i < p->value_count; i++) {
+		printf(" '%s',", p->values[i]);
+	}
+	printf("]\n");
+	indent++;
+	for (int i = 0; i < p->parameter_count; i++)
+		print_params(indent, &p->parameters[i]);
+}
+
+int main(int argc, char **argv)
+{
+	void *h;
+	const driver_settings *s;
+	h = load_driver_settings(argv[1]);
+	if (h == NULL)
+		return usage(argv[0]);
+
+	s = get_driver_settings(h);
+
+	printf("%d\n", s->parameter_count);
+	for (int i = 0; i < s->parameter_count; i++) {
+		print_params(0, &s->parameters[i]);
+	}
+
+	unload_driver_settings(h);
+
+	return 0;
+}