lib/compat/strndup.c

   1 /*
   2  * libcompat - system compatibility library
   3  *
   4  * Copyright © 2011 Guillem Jover <guillem@debian.org>
   5  *
   6  * This is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <config.h>
  21
  22 #include <string.h>
  23 #include <stdlib.h>
  24
  25 #include "compat.h"
  26
  27 char *
  28 strndup(const char *s, size_t n)
  29 {
  30         size_t len;
  31         char *str;
  32
  33         len = strnlen(s, n);
  34         str = malloc(len + 1);
  35         if (str == NULL)
  36                 return NULL;
  37
  38         memcpy(str, s, len);
  39         str[len] = '\0';
  40
  41         return str;
  42 }