1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/ossrv/genericopenlibs/openenvcore/libc/src/readv.c	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,119 @@
     1.4 +/*-
     1.5 + * © Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.
     1.6 + * Copyright (c) 1995, 1996, 1997, 1998, 1999 Kungliga Tekniska Högskolan
     1.7 + * (Royal Institute of Technology, Stockholm, Sweden).
     1.8 + * All rights reserved.
     1.9 + *
    1.10 + * Redistribution and use in source and binary forms, with or without
    1.11 + * modification, are permitted provided that the following conditions
    1.12 + * are met:
    1.13 + *
    1.14 + * 1. Redistributions of source code must retain the above copyright
    1.15 + *    notice, this list of conditions and the following disclaimer.
    1.16 + *
    1.17 + * 2. Redistributions in binary form must reproduce the above copyright
    1.18 + *    notice, this list of conditions and the following disclaimer in the
    1.19 + *    documentation and/or other materials provided with the distribution.
    1.20 + *
    1.21 + * 3. Neither the name of the Institute nor the names of its contributors
    1.22 + *    may be used to endorse or promote products derived from this software
    1.23 + *    without specific prior written permission.
    1.24 + *
    1.25 + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
    1.26 + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    1.27 + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    1.28 + * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
    1.29 + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    1.30 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
    1.31 + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    1.32 + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
    1.33 + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
    1.34 + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
    1.35 + * SUCH DAMAGE.
    1.36 + */
    1.37 +
    1.38 +#ifndef __SYMBIAN32__
    1.39 +#ifdef HAVE_CONFIG_H
    1.40 +#include <config.h>
    1.41 +RCSID("$Id: readv.c,v 1.1.2.1.2.4 2006/11/23 11:59:59 sivanand Exp $");
    1.42 +#endif
    1.43 +
    1.44 +#include "roken.h"
    1.45 +
    1.46 +#endif
    1.47 +
    1.48 +#include <sys/types.h>
    1.49 +#include <sys/uio.h>
    1.50 +#include <unistd.h>
    1.51 +#include <stdlib.h>
    1.52 +#include <errno.h>
    1.53 +#include <string.h>
    1.54 +#include <sys/syslimits.h>
    1.55 +
    1.56 +#define min(X , Y)   ((X) < (Y) ? (X) :(Y) )
    1.57 +
    1.58 +
    1.59 +EXPORT_C ssize_t
    1.60 +readv(int d, const struct iovec *iov, int iovcnt)
    1.61 +{
    1.62 +    ssize_t ret, nb;
    1.63 +    size_t tot = 0;
    1.64 +    int VecIter = 0 ;
    1.65 +    char *buf, *p;
    1.66 +    
    1.67 +    if(iovcnt > IOV_MAX) 
    1.68 +    	{
    1.69 +    	errno = EINVAL ;
    1.70 +    	return -1 ;
    1.71 +    	}
    1.72 +    	if(iovcnt < 0 ) 
    1.73 +    		{
    1.74 +    		errno = EINVAL ;
    1.75 +    		return -1 ;
    1.76 +    		}
    1.77 +
    1.78 +    for(VecIter = 0; VecIter  < iovcnt ; ++VecIter)
    1.79 +    	{
    1.80 +    	 if(iov[VecIter].iov_base == NULL) 
    1.81 +    	 { 
    1.82 +    	    if(VecIter != 0) 
    1.83 +    	    {
    1.84 +    	     break ;	 //Break from the for loop 
    1.85 +    	    }
    1.86 +    	 	errno = EFAULT ;
    1.87 +    	 	return -1 ;
    1.88 +    	 }
    1.89 +    	 if((int)iov[VecIter].iov_len >= 0 ) 
    1.90 +    	 {
    1.91 +    	 tot += iov[VecIter].iov_len;
    1.92 +    	 }
    1.93 +    	 
    1.94 +    	 else 
    1.95 +    	 {
    1.96 +    	  errno = EINVAL ;
    1.97 +    	  return -1 ;	
    1.98 +    	 }
    1.99 +    	 
   1.100 +    	}
   1.101 +  
   1.102 +    buf = malloc(tot);    	
   1.103 +    
   1.104 +    if (tot != 0 && buf == NULL) {
   1.105 +        errno = ENOMEM;
   1.106 +        return -1;
   1.107 +    }
   1.108 +    
   1.109 +    nb = ret = read (d, buf, tot);
   1.110 +    p = buf;
   1.111 +    
   1.112 +    while (nb > 0) {
   1.113 +        ssize_t cnt = min(nb, iov->iov_len);
   1.114 +        memcpy (iov->iov_base, p, cnt);
   1.115 +        p += cnt;
   1.116 +        nb -= cnt;
   1.117 +        iov += 1 ;      //Newly added
   1.118 +    }
   1.119 +    free(buf);
   1.120 +    return ret;
   1.121 +}
   1.122 +