include/linux/fortify-string.h

20 # define fortify_panic(func, write, avail, size, retfail)	\  argument
21 	 __fortify_panic(FORTIFY_REASON(func, write), avail, size)
55 void __fortify_report(const u8 reason, const size_t avail, const size_t size);
56 void __fortify_panic(const u8 reason, const size_t avail, const size_t size) __cold __noreturn;
81 extern void *__underlying_memset(void *p, int c, __kernel_size_t size) __RENAME(memset);
82 extern void *__underlying_memmove(void *p, const void *q, __kernel_size_t size) __RENAME(memmove);
83 extern void *__underlying_memcpy(void *p, const void *q, __kernel_size_t size) __RENAME(memcpy);
85 extern void *__underlying_memset(void *p, int c, __kernel_size_t size) __RENAME(__asan_memset);
86 extern void *__underlying_memmove(void *p, const void *q, __kernel_size_t size) __RENAME(__asan_mem…
87 extern void *__underlying_memcpy(void *p, const void *q, __kernel_size_t size) __RENAME(__asan_memc…
89 extern void *__underlying_memset(void *p, int c, __kernel_size_t size) __RENAME(__hwasan_memset);
90 extern void *__underlying_memmove(void *p, const void *q, __kernel_size_t size) __RENAME(__hwasan_m…
91 extern void *__underlying_memcpy(void *p, const void *q, __kernel_size_t size) __RENAME(__hwasan_me…
94 extern void *__underlying_memchr(const void *p, int c, __kernel_size_t size) __RENAME(memchr);
95 extern int __underlying_memcmp(const void *p, const void *q, __kernel_size_t size) __RENAME(memcmp);
100 extern char *__underlying_strncpy(char *p, const char *q, __kernel_size_t size) __RENAME(strncpy);
197 char *strncpy(char * const POS p, const char *q, __kernel_size_t size)  in strncpy()  argument
201 	if (__compiletime_lessthan(p_size, size))  in strncpy()
203 	if (p_size < size)  in strncpy()
204 		fortify_panic(FORTIFY_FUNC_strncpy, FORTIFY_WRITE, p_size, size, p);  in strncpy()
205 	return __underlying_strncpy(p, q, size);  in strncpy()
277 __FORTIFY_INLINE ssize_t sized_strscpy(char * const POS p, const char * const POS q, size_t size)  in sized_strscpy()  argument
286 		return __real_strscpy(p, q, size);  in sized_strscpy()
292 	if (__compiletime_lessthan(p_size, size))  in sized_strscpy()
299 		if (len < SIZE_MAX && __compiletime_lessthan(len, size)) {  in sized_strscpy()
309 	len = strnlen(q, size);  in sized_strscpy()
315 	len = len == size ? size : len + 1;  in sized_strscpy()
462 __FORTIFY_INLINE bool fortify_memset_chk(__kernel_size_t size,  in fortify_memset_chk()  argument
466 	if (__builtin_constant_p(size)) {  in fortify_memset_chk()
475 		    __compiletime_lessthan(p_size, size))  in fortify_memset_chk()
479 		if (__compiletime_lessthan(p_size_field, size))  in fortify_memset_chk()
480 			__write_overflow_field(p_size_field, size);  in fortify_memset_chk()
496 	if (p_size != SIZE_MAX && p_size < size)  in fortify_memset_chk()
497 		fortify_panic(FORTIFY_FUNC_memset, FORTIFY_WRITE, p_size, size, true);  in fortify_memset_chk()
501 #define __fortify_memset_chk(p, c, size, p_size, p_size_field) ({	\  argument
502 	size_t __fortify_size = (size_t)(size);				\
547 __FORTIFY_INLINE bool fortify_memcpy_chk(__kernel_size_t size,  in fortify_memcpy_chk()  argument
554 	if (__builtin_constant_p(size)) {  in fortify_memcpy_chk()
563 		    __compiletime_lessthan(p_size, size))  in fortify_memcpy_chk()
566 		    __compiletime_lessthan(q_size, size))  in fortify_memcpy_chk()
570 		if (__compiletime_lessthan(p_size_field, size))  in fortify_memcpy_chk()
571 			__write_overflow_field(p_size_field, size);  in fortify_memcpy_chk()
578 		     __compiletime_lessthan(p_size_field, size)) &&  in fortify_memcpy_chk()
579 		    __compiletime_lessthan(q_size_field, size))  in fortify_memcpy_chk()
580 			__read_overflow2_field(q_size_field, size);  in fortify_memcpy_chk()
596 	if (p_size != SIZE_MAX && p_size < size)  in fortify_memcpy_chk()
597 		fortify_panic(func, FORTIFY_WRITE, p_size, size, true);  in fortify_memcpy_chk()
598 	else if (q_size != SIZE_MAX && q_size < size)  in fortify_memcpy_chk()
599 		fortify_panic(func, FORTIFY_READ, p_size, size, true);  in fortify_memcpy_chk()
613 	    p_size != p_size_field && p_size_field < size)  in fortify_memcpy_chk()
619 #define __fortify_memcpy_chk(p, q, size, p_size, q_size,		\  argument
621 	const size_t __fortify_size = (size_t)(size);			\
688 __FORTIFY_INLINE void *memscan(void * const POS0 p, int c, __kernel_size_t size)  in memscan()  argument
692 	if (__compiletime_lessthan(p_size, size))  in memscan()
694 	if (p_size < size)  in memscan()
695 		fortify_panic(FORTIFY_FUNC_memscan, FORTIFY_READ, p_size, size, NULL);  in memscan()
696 	return __real_memscan(p, c, size);  in memscan()
700 int memcmp(const void * const POS0 p, const void * const POS0 q, __kernel_size_t size)  in memcmp()  argument
705 	if (__builtin_constant_p(size)) {  in memcmp()
706 		if (__compiletime_lessthan(p_size, size))  in memcmp()
708 		if (__compiletime_lessthan(q_size, size))  in memcmp()
711 	if (p_size < size)  in memcmp()
712 		fortify_panic(FORTIFY_FUNC_memcmp, FORTIFY_READ, p_size, size, INT_MIN);  in memcmp()
713 	else if (q_size < size)  in memcmp()
714 		fortify_panic(FORTIFY_FUNC_memcmp, FORTIFY_READ, q_size, size, INT_MIN);  in memcmp()
715 	return __underlying_memcmp(p, q, size);  in memcmp()
719 void *memchr(const void * const POS0 p, int c, __kernel_size_t size)  in memchr()  argument
723 	if (__compiletime_lessthan(p_size, size))  in memchr()
725 	if (p_size < size)  in memchr()
726 		fortify_panic(FORTIFY_FUNC_memchr, FORTIFY_READ, p_size, size, NULL);  in memchr()
727 	return __underlying_memchr(p, c, size);  in memchr()
731 __FORTIFY_INLINE void *memchr_inv(const void * const POS0 p, int c, size_t size)  in memchr_inv()  argument
735 	if (__compiletime_lessthan(p_size, size))  in memchr_inv()
737 	if (p_size < size)  in memchr_inv()
738 		fortify_panic(FORTIFY_FUNC_memchr_inv, FORTIFY_READ, p_size, size, NULL);  in memchr_inv()
739 	return __real_memchr_inv(p, c, size);  in memchr_inv()
744 __FORTIFY_INLINE void *kmemdup_noprof(const void * const POS0 p, size_t size, gfp_t gfp)  in kmemdup_noprof()  argument
748 	if (__compiletime_lessthan(p_size, size))  in kmemdup_noprof()
750 	if (p_size < size)  in kmemdup_noprof()
751 		fortify_panic(FORTIFY_FUNC_kmemdup, FORTIFY_READ, p_size, size,  in kmemdup_noprof()
753 	return __real_kmemdup(p, size, gfp);  in kmemdup_noprof()
777 	size_t size;  in strcpy()  local
784 	size = strlen(q) + 1;  in strcpy()
786 	if (__compiletime_lessthan(p_size, size))  in strcpy()
789 	if (p_size < size)  in strcpy()
790 		fortify_panic(FORTIFY_FUNC_strcpy, FORTIFY_WRITE, p_size, size, p);  in strcpy()
791 	__underlying_memcpy(p, q, size);  in strcpy()