Added quick and dirty commands for testing the new NVO code.

src/commandline/commands/nvo_cmd.c

@@ -0,0 +1,68 @@
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <vsprintf.h>
+#include <command.h>
+#include <gpxe/nvo.h>
+#include <gpxe/dhcp.h>
+
+void nvo_cmd_req() {}
+
+extern struct nvo_block *ugly_nvo_hack;
+
+static int show_exec ( int argc, char **argv ) {
+
+	if ( ! ugly_nvo_hack ) {
+		printf ( "No non-volatile option storage available\n" );
+		return 1;
+	}
+
+	hex_dump ( ugly_nvo_hack->options->data,
+		   ugly_nvo_hack->options->len );
+}
+
+struct command show_command __command = {
+	.name = "show",
+	.usage = "show\n",
+	.desc = "Show stored options",
+	.exec = show_exec,
+};
+
+static int set_exec ( int argc, char **argv ) {
+	unsigned long tag;
+	struct dhcp_option *option;
+
+	if ( ! ugly_nvo_hack ) {
+		printf ( "No non-volatile option storage available\n" );
+		return 1;
+	}
+
+	if ( argc != 3 ) {
+		printf ( "Syntax: %s <option number> <option string>\n",
+			 argv[0] );
+		return 1;
+	}
+
+	tag = strtoul ( argv[1], NULL, 0 );
+	option = set_dhcp_option ( ugly_nvo_hack->options, tag, argv[2],
+				   strlen ( argv[2] ) );
+	if ( ! option ) {
+		printf ( "Could not set option %ld\n", tag );
+		return 1;
+	}
+
+	if ( nvo_save ( ugly_nvo_hack ) != 0 ) {
+		printf ( "Could not save options to non-volatile storage\n" );
+		return 1;
+	}
+
+	return 0;
+}
+
+struct command set_command __command = {
+	.name = "set",
+	.usage = "set <option number> <option string>\n",
+	.desc = "Set stored option",
+	.exec = set_exec,
+};