sendfile.c

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/*
 * This file is part of Titan2Reader
 *
 * Copyright (C) 2006, Sebastien Judenherc <sebastien.judenherc@agecodagis.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 * USA
 *
 */

#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <ctype.h>
#include <math.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <dirent.h>

#include "common.h"


// dirty sendfile() implementation

int SendFile(int fdout, int fdin, int len)
{
#define BSIZE 8192
        char buffer[BSIZE];
        int n,out;
        out=0;
        if (len<0)
        {
                len=4*BSIZE;
        }
        while (len!=0)
        {
                n=read(fdin,buffer,(BSIZE<len)?BSIZE:len);
                if (n<=0)
                {
                        break;
                }
                if (n!=write(fdout,buffer,n))
                {
                        PrintError("write: %m\n");
                        break;
                }
                len-=n;
                out+=n;
        }
        return(out);
}

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