Module Name: src
Committed By: riastradh
Date: Tue Sep 7 11:00:13 UTC 2021
Modified Files:
src/sys/kern: kern_crashme.c
Log Message:
New crashme sysctl to enter ddb directly.
To generate a diff of this commit:
cvs rdiff -u -r1.3 -r1.4 src/sys/kern/kern_crashme.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/kern/kern_crashme.c
diff -u src/sys/kern/kern_crashme.c:1.3 src/sys/kern/kern_crashme.c:1.4
--- src/sys/kern/kern_crashme.c:1.3 Thu Apr 23 03:15:47 2020
+++ src/sys/kern/kern_crashme.c Tue Sep 7 11:00:13 2021
@@ -1,4 +1,4 @@
-/* $NetBSD: kern_crashme.c,v 1.3 2020/04/23 03:15:47 rin Exp $ */
+/* $NetBSD: kern_crashme.c,v 1.4 2021/09/07 11:00:13 riastradh Exp $ */
/*
* Copyright (c) 2018, 2019 Matthew R. Green
@@ -36,6 +36,10 @@
* panic or crash. you can add and remove nodes.
*/
+#ifdef _KERNEL_OPT
+#include "opt_ddb.h"
+#endif
+
#include <sys/param.h>
#include <sys/sysctl.h>
#include <sys/systm.h>
@@ -44,6 +48,10 @@
#include <sys/mutex.h>
#include <sys/crashme.h>
+#ifdef DDB
+#include <ddb/ddb.h>
+#endif
+
#define DPRINTF(fmt, ...) \
printf("%s:%d: " fmt "\n", __func__, __LINE__, ## __VA_ARGS__)
@@ -51,6 +59,9 @@ static int crashme_sysctl_forwarder(SYSC
static int crashme_panic(int);
static int crashme_null_deref(int);
+#ifdef DDB
+static int crashme_ddb(int);
+#endif
#define CMNODE(name, lname, func) \
{ \
@@ -62,6 +73,9 @@ static int crashme_null_deref(int);
static crashme_node nodes[] = {
CMNODE("panic", "plain old panic", crashme_panic),
CMNODE("null_deref", "null dereference", crashme_null_deref),
+#ifdef DDB
+ CMNODE("ddb", "enter ddb directly", crashme_ddb),
+#endif
};
static crashme_node *first_node;
static kmutex_t crashme_lock;
@@ -234,3 +248,13 @@ crashme_null_deref(int flags)
*(volatile char *)0 = 0;
return -1;
}
+
+#ifdef DDB
+static int
+crashme_ddb(int flags)
+{
+
+ Debugger();
+ return 0;
+}
+#endif
