src/strlcpy.c

   1 /*
   2  * Copyright (C) 2009, 2010  Daniel Borkmann <daniel@netsniff-ng.org> and
   3  *                           Emmanuel Roullit <emmanuel@netsniff-ng.org>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or (at
   8  * your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  12  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  13  * for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
  18  */
  19
  20 /*
  21  * Copyright (C) 1991, 1992  Linus Torvalds
  22  *
  23  * This program is free software; you can redistribute it and/or modify
  24  * it under the terms of the GNU General Public License as published by
  25  * the Free Software Foundation; either version 2 of the License, or (at
  26  * your option) any later version.
  27  *
  28  * This program is distributed in the hope that it will be useful, but
  29  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  30  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  31  * for more details.
  32  *
  33  * You should have received a copy of the GNU General Public License along
  34  * with this program; if not, write to the Free Software Foundation, Inc.,
  35  * 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
  36  */
  37
  38 /* xmalloc.c taken from the Linux kernel and adapted */
  39
  40 #include <string.h>
  41 #include "strlcpy.h"
  42
  43 size_t strlcpy(char *dest, const char *src, size_t size)
  44 {
  45         size_t ret = strlen(src);
  46
  47         if (size) {
  48                 size_t len = (ret >= size) ? size - 1 : ret;
  49                 memcpy(dest, src, len);
  50                 dest[len] = '\0';
  51         }
  52
  53         return ret;
  54 }