Module Name: src
Committed By: jmcneill
Date: Fri Feb 18 01:07:20 UTC 2011
Added Files:
src/sys/modules/panic: Makefile panic.c
Log Message:
add panic.kmod, an easy way to trigger a panic. takes a 'how' argument
to specify how to trigger the panic:
modload -s how=panic panic.kmod <-- just calls panic()
modload -s how=nullptr panic.kmod <-- null ptr deref
if how isn't specified, it defaults to 'panic'. feel free to add more.
To generate a diff of this commit:
cvs rdiff -u -r0 -r1.1 src/sys/modules/panic/Makefile \
src/sys/modules/panic/panic.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Added files:
Index: src/sys/modules/panic/Makefile
diff -u /dev/null src/sys/modules/panic/Makefile:1.1
--- /dev/null Fri Feb 18 01:07:21 2011
+++ src/sys/modules/panic/Makefile Fri Feb 18 01:07:20 2011
@@ -0,0 +1,8 @@
+# $NetBSD: Makefile,v 1.1 2011/02/18 01:07:20 jmcneill Exp $
+
+.include "../Makefile.inc"
+
+KMOD= panic
+SRCS= panic.c
+
+.include <bsd.kmodule.mk>
Index: src/sys/modules/panic/panic.c
diff -u /dev/null src/sys/modules/panic/panic.c:1.1
--- /dev/null Fri Feb 18 01:07:21 2011
+++ src/sys/modules/panic/panic.c Fri Feb 18 01:07:20 2011
@@ -0,0 +1,85 @@
+/* $NetBSD: panic.c,v 1.1 2011/02/18 01:07:20 jmcneill Exp $ */
+
+/*
+ * Copyright (c) 2011 Jared D. McNeill <jmcne...@invisible.ca>
+ * 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. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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>
+__KERNEL_RCSID(0, "$NetBSD: panic.c,v 1.1 2011/02/18 01:07:20 jmcneill Exp $");
+
+#include <sys/module.h>
+
+MODULE(MODULE_CLASS_MISC, panic, NULL);
+
+static void
+panic_dopanic(void)
+{
+ /* just call panic */
+ panic("oops");
+}
+
+static void
+panic_donullptr(void)
+{
+ /* null ptr dereference */
+ *(int *)NULL = 1;
+}
+
+static const struct {
+ const char *name;
+ void (*func)(void);
+} panic_howto[] = {
+ { "panic", panic_dopanic },
+ { "nullptr", panic_donullptr },
+};
+
+static int
+panic_modcmd(modcmd_t cmd, void *opaque)
+{
+ if (cmd == MODULE_CMD_INIT) {
+ prop_dictionary_t props = opaque;
+ const char *how = NULL;
+ unsigned int i;
+
+ if (props)
+ prop_dictionary_get_cstring_nocopy(props, "how", &how);
+ if (how == NULL)
+ how = "panic";
+
+ for (i = 0; i < __arraycount(panic_howto); i++) {
+ if (strcmp(how, panic_howto[i].name) == 0) {
+ panic_howto[i].func();
+ break;
+ }
+ }
+ if (i == __arraycount(panic_howto))
+ printf("%s: no how '%s'\n", __func__, how);
+ else
+ printf("%s: how '%s' didn't panic?\n", __func__, how);
+
+ return EINVAL;
+ }
+
+ return ENOTTY;
+}
