1 /* 2 * Broadcom Secure Standard Library. 3 * 4 * Copyright (C) 2020, Broadcom. 5 * 6 * Unless you and Broadcom execute a separate written software license 7 * agreement governing use of this software, this software is licensed to you 8 * under the terms of the GNU General Public License version 2 (the "GPL"), 9 * available at http://www.broadcom.com/licenses/GPLv2.php, with the 10 * following added to such license: 11 * 12 * As a special exception, the copyright holders of this software give you 13 * permission to link this software with independent modules, and to copy and 14 * distribute the resulting executable under terms of your choice, provided that 15 * you also meet, for each linked independent module, the terms and conditions of 16 * the license of that module. An independent module is a module which is not 17 * derived from this software. The special exception does not apply to any 18 * modifications of the software. 19 * 20 * 21 * <<Broadcom-WL-IPTag/Dual:>> 22 */ 23 24 #ifndef _bcmstdlib_s_h_ 25 #define _bcmstdlib_s_h_ 26 27 #ifndef BWL_NO_INTERNAL_STDLIB_S_SUPPORT 28 #if !defined(__STDC_WANT_SECURE_LIB__) && \ 29 !(defined(__STDC_LIB_EXT1__) && defined(__STDC_WANT_LIB_EXT1__)) 30 extern int memmove_s(void *dest, size_t destsz, const void *src, size_t n); 31 extern int memcpy_s(void *dest, size_t destsz, const void *src, size_t n); 32 extern int memset_s(void *dest, size_t destsz, int c, size_t n); 33 #endif /* !__STDC_WANT_SECURE_LIB__ && !(__STDC_LIB_EXT1__ && __STDC_WANT_LIB_EXT1__) */ 34 #if !defined(FREEBSD) && !defined(MACOSX) && !defined(BCM_USE_PLATFORM_STRLCPY) 35 extern size_t strlcpy(char *dest, const char *src, size_t size); 36 #endif /* !defined(FREEBSD) && !defined(MACOSX) && !defined(BCM_USE_PLATFORM_STRLCPY) */ 37 extern size_t strlcat_s(char *dest, const char *src, size_t size); 38 39 /* Remap xxx_s() APIs to use compiler builtin functions for C standard library functions. 40 * The intent is to identify buffer overflow at compile-time for the safe stdlib APIs when 41 * the user-specified destination buffer-size is incorrect. 42 * 43 * This is only intended as a compile-time test, and should be used by compile-only targets. 44 */ 45 #if defined(BCM_STDLIB_S_BUILTINS_TEST) 46 #define memmove_s(dest, destsz, src, n) ((void)(destsz), (int)__builtin_memmove((dest), (src), (n))) 47 #define memcpy_s(dest, destsz, src, n) ((void)(destsz), (int)__builtin_memcpy((dest), (src), (n))) 48 #define memset_s(dest, destsz, c, n) ((void)(destsz), (int)__builtin_memset((dest), (c), (n))) 49 #define strlcpy(dest, src, size) ((void)(size), (size_t)__builtin_strcpy((dest), (src))) 50 #define strlcat_s(dest, src, size) ((void)(size), (size_t)__builtin_strcat((dest), (src))) 51 #endif /* BCM_STDLIB_S_BUILTINS_TEST */ 52 53 #endif /* !BWL_NO_INTERNAL_STDLIB_S_SUPPORT */ 54 #endif /* _bcmstdlib_s_h_ */ 55