/*- * Copyright (c) 2017 Juniper Networks. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #include #include #include #include "libc_private.h" /* ISO/IEC 9899:2011 K.3.7.4.1 */ errno_t memset_s(void *s, rsize_t smax, int c, rsize_t n) { errno_t ret; rsize_t lim; unsigned char v; volatile unsigned char *dst; ret = EINVAL; lim = n < smax ? n : smax; v = (unsigned char)c; dst = (unsigned char *)s; if (s == NULL) { __throw_constraint_handler_s("memset_s : s is NULL", ret); } else if (smax > RSIZE_MAX) { __throw_constraint_handler_s("memset_s : smax > RSIZE_MAX", ret); } else if (n > RSIZE_MAX) { __throw_constraint_handler_s("memset_s : n > RSIZE_MAX", ret); } else { while (lim > 0) dst[--lim] = v; if (n > smax) { __throw_constraint_handler_s("memset_s : n > smax", ret); } else { ret = 0; } } return (ret); }