summaryrefslogtreecommitdiffstats
path: root/drivers/misc/lkdtm/lkdtm.h
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/misc/lkdtm/lkdtm.h')
-rw-r--r--drivers/misc/lkdtm/lkdtm.h100
1 files changed, 100 insertions, 0 deletions
diff --git a/drivers/misc/lkdtm/lkdtm.h b/drivers/misc/lkdtm/lkdtm.h
new file mode 100644
index 0000000000..015e048402
--- /dev/null
+++ b/drivers/misc/lkdtm/lkdtm.h
@@ -0,0 +1,100 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __LKDTM_H
+#define __LKDTM_H
+
+#define pr_fmt(fmt) "lkdtm: " fmt
+
+#include <linux/kernel.h>
+
+extern char *lkdtm_kernel_info;
+
+#define pr_expected_config(kconfig) \
+do { \
+ if (IS_ENABLED(kconfig)) \
+ pr_err("Unexpected! This %s was built with " #kconfig "=y\n", \
+ lkdtm_kernel_info); \
+ else \
+ pr_warn("This is probably expected, since this %s was built *without* " #kconfig "=y\n", \
+ lkdtm_kernel_info); \
+} while (0)
+
+#ifndef MODULE
+int lkdtm_check_bool_cmdline(const char *param);
+#define pr_expected_config_param(kconfig, param) \
+do { \
+ if (IS_ENABLED(kconfig)) { \
+ switch (lkdtm_check_bool_cmdline(param)) { \
+ case 0: \
+ pr_warn("This is probably expected, since this %s was built with " #kconfig "=y but booted with '" param "=N'\n", \
+ lkdtm_kernel_info); \
+ break; \
+ case 1: \
+ pr_err("Unexpected! This %s was built with " #kconfig "=y and booted with '" param "=Y'\n", \
+ lkdtm_kernel_info); \
+ break; \
+ default: \
+ pr_err("Unexpected! This %s was built with " #kconfig "=y (and booted without '" param "' specified)\n", \
+ lkdtm_kernel_info); \
+ } \
+ } else { \
+ switch (lkdtm_check_bool_cmdline(param)) { \
+ case 0: \
+ pr_warn("This is probably expected, as this %s was built *without* " #kconfig "=y and booted with '" param "=N'\n", \
+ lkdtm_kernel_info); \
+ break; \
+ case 1: \
+ pr_err("Unexpected! This %s was built *without* " #kconfig "=y but booted with '" param "=Y'\n", \
+ lkdtm_kernel_info); \
+ break; \
+ default: \
+ pr_err("This is probably expected, since this %s was built *without* " #kconfig "=y (and booted without '" param "' specified)\n", \
+ lkdtm_kernel_info); \
+ break; \
+ } \
+ } \
+} while (0)
+#else
+#define pr_expected_config_param(kconfig, param) pr_expected_config(kconfig)
+#endif
+
+/* Crash types. */
+struct crashtype {
+ const char *name;
+ void (*func)(void);
+};
+
+#define CRASHTYPE(_name) \
+ { \
+ .name = __stringify(_name), \
+ .func = lkdtm_ ## _name, \
+ }
+
+/* Category's collection of crashtypes. */
+struct crashtype_category {
+ struct crashtype *crashtypes;
+ size_t len;
+};
+
+/* Each category's crashtypes list. */
+extern struct crashtype_category bugs_crashtypes;
+extern struct crashtype_category heap_crashtypes;
+extern struct crashtype_category perms_crashtypes;
+extern struct crashtype_category refcount_crashtypes;
+extern struct crashtype_category usercopy_crashtypes;
+extern struct crashtype_category stackleak_crashtypes;
+extern struct crashtype_category cfi_crashtypes;
+extern struct crashtype_category fortify_crashtypes;
+extern struct crashtype_category powerpc_crashtypes;
+
+/* Each category's init/exit routines. */
+void __init lkdtm_bugs_init(int *recur_param);
+void __init lkdtm_heap_init(void);
+void __exit lkdtm_heap_exit(void);
+void __init lkdtm_perms_init(void);
+void __init lkdtm_usercopy_init(void);
+void __exit lkdtm_usercopy_exit(void);
+
+/* Special declaration for function-in-rodata. */
+void lkdtm_rodata_do_nothing(void);
+
+#endif