/*-

 *  Copyright (c) 1995, 1996, 1997, 1998, 1999 Kungliga Tekniska Högskolan

 * (Royal Institute of Technology, Stockholm, Sweden).

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 *

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * 3. Neither the name of the Institute nor the names of its contributors

 *    may be used to endorse or promote products derived from this software

 *    without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE 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 INSTITUTE OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 * © Portions Copyright (c) 2005-2007 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. 

 */

#ifndef __SYMBIAN32__

#ifdef HAVE_CONFIG_H

#include <config.h>

RCSID("$Id: writev.c,v 1.1.2.1.2.4 2006/11/23 12:00:53 sivanand Exp $");

#endif

#include "roken.h"

#endif

#include <sys/types.h>

#include <sys/uio.h>

#include <unistd.h>

#include <stdlib.h>

#include <errno.h>

#include <string.h>

#include <sys/syslimits.h>

#include <stdio.h>

#include <wchar.h>

ssize_t

_writev(int d, const struct iovec *iov, int iovcnt)

{

    ssize_t ret;

    size_t tot = 0;

    int VecIter;

    char *buf, *p;

    if(iovcnt > IOV_MAX) 

    {

      errno = EINVAL ;

      return -1 ;

    }

	if(iovcnt < 0 ) 

    {

    	errno = EINVAL ;

    	return -1 ;

    }

    for(VecIter = 0; VecIter < iovcnt; ++VecIter) 

    {

       if(iov[VecIter].iov_base == NULL) 

       {

        if(VecIter != 0 ) 

        {

          break ; //Break From the for loop	

        }

    	errno = EFAULT  ;

    	return -1 ;

       }	

       if((int)iov[VecIter].iov_len >= 0 ) 

       {

          tot += iov[VecIter].iov_len;

       }

       else 

       {

    	  errno = EINVAL ;

    	  return -1 ;	

       }

    }

    buf = malloc(tot);

    if (tot != 0 && buf == NULL) {

        errno = ENOMEM;

        return -1;

    }

    p = buf;

    for (VecIter = 0; VecIter < iovcnt; ++VecIter) {

        if(iov[VecIter].iov_base == NULL) 

        	{

        	 break ; //Break from the for loop

        	}

        memcpy (p, iov[VecIter].iov_base, iov[VecIter].iov_len);

        p += iov[VecIter].iov_len;

    }

    ret = write (d, buf, tot);

    free (buf);

    return ret;

}

#ifdef __SYMBIAN_COMPILE_UNUSED__

ssize_t

_wwritev(int d, const struct iovec *iov, int iovcnt)

{

    ssize_t ret;

    size_t tot = 0;

    int VecIter;

    FILE *fp ;

    wchar_t *buf, *p;

    if(iovcnt > IOV_MAX) 

    {

      errno = EINVAL ;

      return -1 ;

    }

	if(iovcnt < 0 ) 

    {

    	errno = EINVAL ;

    	return -1 ;

    }

    for(VecIter = 0; VecIter < iovcnt; ++VecIter) 

    {

       if(iov[VecIter].iov_base == NULL) 

       {

        if(VecIter != 0 ) 

        {

          break ; //Break From the for loop	

        }

    	errno = EFAULT  ;

    	return -1 ;

       }	

       if((int)iov[VecIter].iov_len >= 0 ) 

       {

          tot += iov[VecIter].iov_len;

       }

       else 

       {

    	  errno = EINVAL ;

    	  return -1 ;	

       }

    }

    buf = (wchar_t *)malloc(tot*sizeof(wchar_t));

    if (tot != 0 && buf == NULL) {

        errno = ENOMEM;

        return -1;

    }

    p = buf;

    for (VecIter = 0; VecIter < iovcnt; ++VecIter) 

    {

        if(iov[VecIter].iov_base == NULL) 

        	{

        	 break ; //Break from the for loop

        	}

        wmemcpy (p, iov[VecIter].iov_base, iov[VecIter].iov_len);

        p += iov[VecIter].iov_len;

    }

   	fp = fdopen(d,"a+"); 

    ret = fwprintf(fp,buf);

    //ret = write (d, buf, tot);

    free (buf);

    return ret;

}

#endif //__SYMBIAN_COMPILE_UNUSED__

EXPORT_C 

writev(int fd, const struct iovec *iov, int iovcnt)

{

	return _writev(fd , iov , iovcnt) ;

}