linux-stable/drivers/misc/lkdtm/lkdtm.h

/* 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)				\
{								\
	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);			\
}

#ifndef MODULE
int lkdtm_check_bool_cmdline(const char *param);
#define pr_expected_config_param(kconfig, param)		\
{								\
	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;					\
		}						\
	}							\
}
#else
#define pr_expected_config_param(kconfig, param) pr_expected_config(kconfig)
#endif

/* bugs.c */
void __init lkdtm_bugs_init(int *recur_param);
void lkdtm_PANIC(void);
void lkdtm_BUG(void);
void lkdtm_WARNING(void);
void lkdtm_WARNING_MESSAGE(void);
void lkdtm_EXCEPTION(void);
void lkdtm_LOOP(void);
void lkdtm_EXHAUST_STACK(void);
void lkdtm_CORRUPT_STACK(void);
void lkdtm_CORRUPT_STACK_STRONG(void);
void lkdtm_REPORT_STACK(void);
void lkdtm_REPORT_STACK_CANARY(void);
void lkdtm_UNALIGNED_LOAD_STORE_WRITE(void);
void lkdtm_SOFTLOCKUP(void);
void lkdtm_HARDLOCKUP(void);
void lkdtm_SPINLOCKUP(void);
void lkdtm_HUNG_TASK(void);
void lkdtm_OVERFLOW_SIGNED(void);
void lkdtm_OVERFLOW_UNSIGNED(void);
void lkdtm_ARRAY_BOUNDS(void);
void lkdtm_CORRUPT_LIST_ADD(void);
void lkdtm_CORRUPT_LIST_DEL(void);
void lkdtm_STACK_GUARD_PAGE_LEADING(void);
void lkdtm_STACK_GUARD_PAGE_TRAILING(void);
void lkdtm_UNSET_SMEP(void);
void lkdtm_DOUBLE_FAULT(void);
void lkdtm_CORRUPT_PAC(void);

/* heap.c */
void __init lkdtm_heap_init(void);
void __exit lkdtm_heap_exit(void);
void lkdtm_VMALLOC_LINEAR_OVERFLOW(void);
void lkdtm_SLAB_LINEAR_OVERFLOW(void);
void lkdtm_WRITE_AFTER_FREE(void);
void lkdtm_READ_AFTER_FREE(void);
void lkdtm_WRITE_BUDDY_AFTER_FREE(void);
void lkdtm_READ_BUDDY_AFTER_FREE(void);
void lkdtm_SLAB_INIT_ON_ALLOC(void);
void lkdtm_BUDDY_INIT_ON_ALLOC(void);
void lkdtm_SLAB_FREE_DOUBLE(void);
void lkdtm_SLAB_FREE_CROSS(void);
void lkdtm_SLAB_FREE_PAGE(void);

/* perms.c */
void __init lkdtm_perms_init(void);
void lkdtm_WRITE_RO(void);
void lkdtm_WRITE_RO_AFTER_INIT(void);
void lkdtm_WRITE_KERN(void);
void lkdtm_WRITE_OPD(void);
void lkdtm_EXEC_DATA(void);
void lkdtm_EXEC_STACK(void);
void lkdtm_EXEC_KMALLOC(void);
void lkdtm_EXEC_VMALLOC(void);
void lkdtm_EXEC_RODATA(void);
void lkdtm_EXEC_USERSPACE(void);
void lkdtm_EXEC_NULL(void);
void lkdtm_ACCESS_USERSPACE(void);
void lkdtm_ACCESS_NULL(void);

/* refcount.c */
void lkdtm_REFCOUNT_INC_OVERFLOW(void);
void lkdtm_REFCOUNT_ADD_OVERFLOW(void);
void lkdtm_REFCOUNT_INC_NOT_ZERO_OVERFLOW(void);
void lkdtm_REFCOUNT_ADD_NOT_ZERO_OVERFLOW(void);
void lkdtm_REFCOUNT_DEC_ZERO(void);
void lkdtm_REFCOUNT_DEC_NEGATIVE(void);
void lkdtm_REFCOUNT_DEC_AND_TEST_NEGATIVE(void);
void lkdtm_REFCOUNT_SUB_AND_TEST_NEGATIVE(void);
void lkdtm_REFCOUNT_INC_ZERO(void);
void lkdtm_REFCOUNT_ADD_ZERO(void);
void lkdtm_REFCOUNT_INC_SATURATED(void);
void lkdtm_REFCOUNT_DEC_SATURATED(void);
void lkdtm_REFCOUNT_ADD_SATURATED(void);
void lkdtm_REFCOUNT_INC_NOT_ZERO_SATURATED(void);
void lkdtm_REFCOUNT_ADD_NOT_ZERO_SATURATED(void);
void lkdtm_REFCOUNT_DEC_AND_TEST_SATURATED(void);
void lkdtm_REFCOUNT_SUB_AND_TEST_SATURATED(void);
void lkdtm_REFCOUNT_TIMING(void);
void lkdtm_ATOMIC_TIMING(void);

/* rodata.c */
void lkdtm_rodata_do_nothing(void);

/* usercopy.c */
void __init lkdtm_usercopy_init(void);
void __exit lkdtm_usercopy_exit(void);
void lkdtm_USERCOPY_HEAP_SIZE_TO(void);
void lkdtm_USERCOPY_HEAP_SIZE_FROM(void);
void lkdtm_USERCOPY_HEAP_WHITELIST_TO(void);
void lkdtm_USERCOPY_HEAP_WHITELIST_FROM(void);
void lkdtm_USERCOPY_STACK_FRAME_TO(void);
void lkdtm_USERCOPY_STACK_FRAME_FROM(void);
void lkdtm_USERCOPY_STACK_BEYOND(void);
void lkdtm_USERCOPY_KERNEL(void);

/* stackleak.c */
void lkdtm_STACKLEAK_ERASING(void);

/* cfi.c */
void lkdtm_CFI_FORWARD_PROTO(void);

/* fortify.c */
void lkdtm_FORTIFIED_OBJECT(void);
void lkdtm_FORTIFIED_SUBOBJECT(void);
void lkdtm_FORTIFIED_STRSCPY(void);

/* powerpc.c */
void lkdtm_PPC_SLB_MULTIHIT(void);

#endif