projects / apple / libc.git / blame
| Commit | Line | Data |
|---|---|---|
| 6465356a A |
1 | /* $NetBSD$ */ |
| 2 | ||
| 3 | /*- | |
| 4 | * Copyright (c) 2012 The NetBSD Foundation, Inc. | |
| 5 | * All rights reserved. | |
| 6 | * | |
| 7 | * This code is derived from software contributed to The NetBSD Foundation | |
| 8 | * by Alan Barrett | |
| 9 | * | |
| 10 | * Redistribution and use in source and binary forms, with or without | |
| 11 | * modification, are permitted provided that the following conditions | |
| 12 | * are met: | |
| 13 | * 1. Redistributions of source code must retain the above copyright | |
| 14 | * notice, this list of conditions and the following disclaimer. | |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 16 | * notice, this list of conditions and the following disclaimer in the | |
| 17 | * documentation and/or other materials provided with the distribution. | |
| 18 | * | |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS | |
| 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | |
| 21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS | |
| 23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 29 | * POSSIBILITY OF SUCH DAMAGE. | |
| 30 | */ | |
| 31 | ||
| 32 | /* | |
| 33 | * ISO/IEC 9899:2011 section K.3.7.4.1 The memset_s function | |
| 34 | */ | |
| 35 | ||
| 36 | #include <sys/cdefs.h> | |
| 37 | ||
| 38 | __RCSID("$NetBSD$"); | |
| 39 | ||
| 40 | #define __STDC_WANT_LIB_EXT1__ 1 | |
| 41 | #include <errno.h> | |
| 42 | #include <stdint.h> | |
| 43 | #include <string.h> | |
| 44 | ||
| 45 | #undef memset_s /* in case it was defined as a macro */ | |
| 46 | #undef memset /* in case it was defined as a macro */ | |
| 47 | ||
| 48 | errno_t | |
| 49 | memset_s(void *s, rsize_t smax, int c, rsize_t n) | |
| 50 | { | |
| 51 | errno_t err = 0; | |
| 52 | ||
| 53 | if (s == NULL) | |
| 54 | return EINVAL; | |
| 55 | if (smax > RSIZE_MAX) | |
| 56 | return E2BIG; | |
| 57 | ||
| 58 | if (n > RSIZE_MAX) { | |
| 59 | err = E2BIG; | |
| 60 | n = smax; | |
| 61 | } | |
| 62 | ||
| 63 | if (n > smax) { | |
| 64 | err = EOVERFLOW; | |
| 65 | n = smax; | |
| 66 | } | |
| 67 | ||
| 68 | memset(s, c, n); | |
| 69 | ||
| 70 | return err; | |
| 71 | } |