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      1 /*	$NetBSD: strerror_r.c,v 1.2 2017/01/28 21:31:50 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1995, 1996, 1997, 1998 Kungliga Tekniska Hgskolan
      5  * (Royal Institute of Technology, Stockholm, Sweden).
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  *
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  *
     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  * 3. Neither the name of the Institute nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <config.h>
     37 
     38 #if (!defined(HAVE_STRERROR_R) && !defined(strerror_r)) || (!defined(STRERROR_R_PROTO_COMPATIBLE) && defined(HAVE_STRERROR_R))
     39 
     40 #include <stdio.h>
     41 #include <string.h>
     42 #include <errno.h>
     43 #include <krb5/roken.h>
     44 
     45 #ifdef _MSC_VER
     46 
     47 int ROKEN_LIB_FUNCTION
     48 rk_strerror_r(int eno, char * strerrbuf, size_t buflen)
     49 {
     50     errno_t err;
     51 
     52     err = strerror_s(strerrbuf, buflen, eno);
     53     if (err != 0) {
     54         int code;
     55         code = sprintf_s(strerrbuf, buflen, "Error % occurred.", eno);
     56         err = ((code != 0)? errno : 0);
     57     }
     58 
     59     return err;
     60 }
     61 
     62 #else  /* _MSC_VER */
     63 
     64 int ROKEN_LIB_FUNCTION
     65 rk_strerror_r(int eno, char *strerrbuf, size_t buflen)
     66 {
     67     /* Assume is the linux broken strerror_r (returns the a buffer (char *) if the input buffer wasn't use */
     68 #ifdef HAVE_STRERROR_R
     69     const char *str;
     70     str = strerror_r(eno, strerrbuf, buflen);
     71     if (str != strerrbuf)
     72 	if (strlcpy(strerrbuf, str, buflen) >= buflen)
     73 	    return ERANGE;
     74     return 0;
     75 #else
     76     int ret;
     77     ret = strlcpy(strerrbuf, strerror(eno), buflen);
     78     if (ret > buflen)
     79 	return ERANGE;
     80     return 0;
     81 #endif
     82 }
     83 
     84 #endif  /* !_MSC_VER */
     85 
     86 #endif
     87