strdup.c

/* Copyright (c) 2008, Atmel Corporation
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     distribution.
   * Neither the name of the copyright holders nor the names of
     contributors may be used to endorse or promote products derived
     from this software without specific prior written permission.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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/* $Id$ */

#include <stdlib.h>
#include <string.h>
#include "sectionname.h"

/** \file */
/** \ingroup avr_string
    \fn char *strdup(const char *s1)
    \brief Duplicate a string.

    The strdup() function allocates memory and copies into it the string
    addressed by s1, including the terminating null character.

    \warning The strdup() function calls malloc() to allocate the memory
    for the duplicated string! The user is responsible for freeing the
    memory by calling free(). 
    
    \returns The strdup() function returns a pointer to the resulting string
    dest. If malloc() cannot allocate enough storage for the string, strdup() 
    will return NULL.

    \warning Be sure to check the return value of the strdup() function to
    make sure that the function has succeeded in allocating the memory!
*/

ATTRIBUTE_CLIB_SECTION
char *
strdup(const char *s1)
{
    char *s2 = malloc(strlen(s1)+1);
    if (s2 != NULL)
    {
        strcpy(s2, s1);
    }
    return(s2);
}