compat_strndup.c

   1 #include "config.h"
   2
   3 #if HAVE_STRNDUP
   4
   5 int dummy;
   6
   7 #else
   8
   9 /* $Id: compat_strndup.c,v 1.1 2018/02/27 11:16:23 schwarze Exp $ */
  10 /* OpenBSD: strndup.c,v 1.2 2015/08/31 02:53:57 guenther Exp */
  11 /*
  12  * Copyright (c) 2010 Todd C. Miller <Todd.Miller@courtesan.com>
  13  *
  14  * Permission to use, copy, modify, and distribute this software for any
  15  * purpose with or without fee is hereby granted, provided that the above
  16  * copyright notice and this permission notice appear in all copies.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  19  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  20  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  21  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  22  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  23  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  24  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  25  */
  26
  27 #include <sys/types.h>
  28
  29 #include <stdlib.h>
  30 #include <string.h>
  31
  32 char *
  33 strndup(const char *str, size_t maxlen)
  34 {
  35         char *copy;
  36         size_t len;
  37
  38         for (len = 0; len < maxlen && str[len] != '\0'; len++)
  39                 continue;
  40
  41         copy = malloc(len + 1);
  42         if (copy != NULL) {
  43                 (void)memcpy(copy, str, len);
  44                 copy[len] = '\0';
  45         }
  46
  47         return copy;
  48 }
  49
  50 #endif