mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-02 16:44:10 +08:00
73f62e60d8
It's long been annoying that to add a new LKDTM test one had to update lkdtm.h and core.c to get it "registered". Switch to a per-category list and update the crashtype walking code in core.c to handle it. This also means that all the lkdtm_* tests themselves can be static now. Cc: Arnd Bergmann <arnd@arndb.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Kees Cook <keescook@chromium.org>
101 lines
3.0 KiB
C
101 lines
3.0 KiB
C
/* 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
|