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/* 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
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