Add command-line tool ddb(8), which allows DDB(4) scripts to be

managed from userspace.  It is largely a wrapper for sysctl()
calls, but because the sysctls for adding and removing scripts
are awkward to use directly, this provides an easier-to-use
interface.

MFC after:	3 months

1 files changed, 67 insertions, 0 deletions

diff --git a/sbin/ddb/ddb.c b/sbin/ddb/ddb.c
new file mode 100644
index 000000000000..9ca0d57e6732
--- /dev/null
+++ b/sbin/ddb/ddb.c
@@ -0,0 +1,67 @@
+/*-
+ * Copyright (c) 2007 Robert N. M. Watson
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysexits.h>
+
+#include "ddb.h"
+
+void
+usage(void)
+{
+
+	fprintf(stderr, "usage:\n");
+	fprintf(stderr, "ddb script scriptname\n");
+	fprintf(stderr, "ddb script scriptname=script\n");
+	fprintf(stderr, "ddb scripts\n");
+	fprintf(stderr, "ddb unscript scriptname\n");
+	exit(EX_USAGE);
+}
+
+int
+main(int argc, char *argv[])
+{
+
+	if (argc < 2)
+		usage();
+
+	argc -= 1;
+	argv += 1;
+	if (strcmp(argv[0], "script") == 0)
+		ddb_script(argc, argv);
+	else if (strcmp(argv[0], "scripts") == 0)
+		ddb_scripts(argc, argv);
+	else if (strcmp(argv[0], "unscript") == 0)
+		ddb_unscript(argc, argv);
+	else
+		usage();
+	exit(EX_OK);
+}