gl/strdup.c

   1 /* Copyright (C) 1991, 1996, 1997, 1998, 2002, 2003, 2004 Free Software
   2    Foundation, Inc.
   3
   4    This file is part of the GNU C Library.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU Lesser General Public License as published by
   8    the Free Software Foundation; either version 2.1, or (at your option)
   9    any later version.
  10
  11    This program 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 Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public License along
  17    with this program; if not, write to the Free Software Foundation,
  18    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 # include <config.h>
  22 #endif
  23
  24 #ifndef _LIBC
  25 /* Get specification.  */
  26 # include "strdup.h"
  27 #endif
  28
  29 #include <stdlib.h>
  30 #include <string.h>
  31
  32 #undef __strdup
  33 #undef strdup
  34
  35 #ifndef weak_alias
  36 # define __strdup strdup
  37 #endif
  38
  39 /* Duplicate S, returning an identical malloc'd string.  */
  40 char *
  41 __strdup (const char *s)
  42 {
  43   size_t len = strlen (s) + 1;
  44   void *new = malloc (len);
  45
  46   if (new == NULL)
  47     return NULL;
  48
  49   return (char *) memcpy (new, s, len);
  50 }
  51 #ifdef libc_hidden_def
  52 libc_hidden_def (__strdup)
  53 #endif
  54 #ifdef weak_alias
  55 weak_alias (__strdup, strdup)
  56 #endif