8 extern int __underlying_memcmp(const void *p, const void *q, __kernel_size_t size) __RENAME(memcmp);
9 extern void *__underlying_memcpy(void *p, const void *q, __kernel_size_t size) __RENAME(memcpy);
10 extern void *__underlying_memmove(void *p, const void *q, __kernel_size_t size) __RENAME(memmove);
12 extern char *__underlying_strcat(char *p, const char *q) __RENAME(strcat);
13 extern char *__underlying_strcpy(char *p, const char *q) __RENAME(strcpy);
15 extern char *__underlying_strncat(char *p, const char *q, __kernel_size_t count) __RENAME(strncat);
16 extern char *__underlying_strncpy(char *p, const char *q, __kernel_size_t size) __RENAME(strncpy);
30 __FORTIFY_INLINE char *strncpy(char *p, const char *q, __kernel_size_t size)  in strncpy()  argument
32 	size_t p_size = __builtin_object_size(p, 1);  in strncpy()
38 	return __underlying_strncpy(p, q, size);  in strncpy()
41 __FORTIFY_INLINE char *strcat(char *p, const char *q)  in strcat()  argument
43 	size_t p_size = __builtin_object_size(p, 1);  in strcat()
45 	if (p_size == (size_t)-1)  in strcat()
46 		return __underlying_strcat(p, q);  in strcat()
47 	if (strlcat(p, q, p_size) >= p_size)  in strcat()
55 	size_t p_size = __builtin_object_size(p, 1);  in strlen()
58 	if (p_size == (size_t)-1 ||  in strlen()
59 		(__builtin_constant_p(p[p_size - 1]) && p[p_size - 1] == '\0'))  in strlen()
70 	size_t p_size = __builtin_object_size(p, 1);  in strnlen()
80 __FORTIFY_INLINE size_t strlcpy(char *p, const char *q, size_t size)  in strlcpy()  argument
83 	size_t p_size = __builtin_object_size(p, 1);  in strlcpy()
84 	size_t q_size = __builtin_object_size(q, 1);  in strlcpy()
86 	if (p_size == (size_t)-1 && q_size == (size_t)-1)  in strlcpy()
87 		return __real_strlcpy(p, q, size);  in strlcpy()
88 	ret = strlen(q);  in strlcpy()
90 		size_t len = (ret >= size) ? size - 1 : ret;  in strlcpy()
96 		__underlying_memcpy(p, q, len);  in strlcpy()
104 __FORTIFY_INLINE ssize_t strscpy(char *p, const char *q, size_t size)  in strscpy()  argument
108 	size_t p_size = __builtin_object_size(p, 1);  in strscpy()
109 	size_t q_size = __builtin_object_size(q, 1);  in strscpy()
111 	/* If we cannot get size of p and q default to call strscpy. */  in strscpy()
112 	if (p_size == (size_t) -1 && q_size == (size_t) -1)  in strscpy()
113 		return __real_strscpy(p, q, size);  in strscpy()
123 	 * This call protects from read overflow, because len will default to q  in strscpy()
126 	len = strnlen(q, size);  in strscpy()
130 	 * Otherwise we will copy len + 1 because of the final '\O'.  in strscpy()
132 	len = len == size ? size : len + 1;  in strscpy()
143 	 * 1. Read overflow thanks to call to strnlen().  in strscpy()
146 	return __real_strscpy(p, q, len);  in strscpy()
150 __FORTIFY_INLINE char *strncat(char *p, const char *q, __kernel_size_t count)  in strncat()  argument
153 	size_t p_size = __builtin_object_size(p, 1);  in strncat()
154 	size_t q_size = __builtin_object_size(q, 1);  in strncat()
156 	if (p_size == (size_t)-1 && q_size == (size_t)-1)  in strncat()
157 		return __underlying_strncat(p, q, count);  in strncat()
159 	copy_len = strnlen(q, count);  in strncat()
160 	if (p_size < p_len + copy_len + 1)  in strncat()
162 	__underlying_memcpy(p + p_len, q, copy_len);  in strncat()
178 __FORTIFY_INLINE void *memcpy(void *p, const void *q, __kernel_size_t size)  in memcpy()  argument
181 	size_t q_size = __builtin_object_size(q, 0);  in memcpy()
191 	return __underlying_memcpy(p, q, size);  in memcpy()
194 __FORTIFY_INLINE void *memmove(void *p, const void *q, __kernel_size_t size)  in memmove()  argument
197 	size_t q_size = __builtin_object_size(q, 0);  in memmove()
207 	return __underlying_memmove(p, q, size);  in memmove()
222 __FORTIFY_INLINE int memcmp(const void *p, const void *q, __kernel_size_t size)  in memcmp()  argument
225 	size_t q_size = __builtin_object_size(q, 0);  in memcmp()
235 	return __underlying_memcmp(p, q, size);  in memcmp()
274 __FORTIFY_INLINE char *strcpy(char *p, const char *q)  in strcpy()  argument
276 	size_t p_size = __builtin_object_size(p, 1);  in strcpy()
277 	size_t q_size = __builtin_object_size(q, 1);  in strcpy()
280 	if (p_size == (size_t)-1 && q_size == (size_t)-1)  in strcpy()
281 		return __underlying_strcpy(p, q);  in strcpy()
282 	size = strlen(q) + 1;  in strcpy()
286 	memcpy(p, q, size);  in strcpy()