CRASHME(9) | Kernel Developer's Manual | CRASHME(9) |
crashme
, crashme_add
,
crashme_remove
—
#include <sys/crashme.h>
int
crashme_add
(crashme_node
*cn);
int
crashme_remove
(crashme_node
*cn);
crashme
functions provide access to dynamically add
and remove crashme nodes. These nodes are simply named callbacks that are
expected to cause the system to crash.
The crashme functionality is only available in kernels with the
options(4)
DEBUG
option set.
Each crashme node is maintained in a crashme_node structure which has the following public members:
typedef int (*crashme_fn)(int); typedef struct crashme_node { const char *cn_name; const char *cn_longname; crashme_fn cn_fn; } crashme_node;
The caller must fill in the cn_name, cn_longname, and cn_fn members.
The flags parameter is passed from sysctl. The return value is 0 upon success or non zero for failure.
crashme
subsystem:
debug.crashme_enable
crashme
node to be
executed.The following sysctl(8) nodes trigger crashes in different ways when written:
debug.crashme.panic
debug.crashme.null_deref
debug.crashme.null_jump
debug.crashme.ddb
DDB
.crashme
driver appeared in NetBSD
9.0.
January 7, 2019 | NetBSD 10.1 |