/*kHTTPd -- the next generationBasic socket functions*//**************************************************************** *	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, 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., 675 Mass Ave, Cambridge, MA 02139, USA. * ****************************************************************/#include "prototypes.h"#include <linux/kernel.h>#include <linux/net.h>#include <linux/version.h>#include <linux/smp_lock.h>#include <net/sock.h>/*MainSocket is shared by all threads, therefore it has to bea global variable.*/struct socket *MainSocket=NULL;int StartListening(const int Port){	struct socket *sock;	struct sockaddr_in sin;	int error;		EnterFunction("StartListening");		/* First create a socket */		error = sock_create(PF_INET,SOCK_STREAM,IPPROTO_TCP,&sock);	if (error<0) 	     (void)printk(KERN_ERR "Error during creation of socket; terminating\n");	/* Now bind the socket */		sin.sin_family	     = AF_INET;	sin.sin_addr.s_addr  = INADDR_ANY;	sin.sin_port         = htons((unsigned short)Port);		error = sock->ops->bind(sock,(struct sockaddr*)&sin,sizeof(sin));	if (error<0)	{		(void)printk(KERN_ERR "kHTTPd: Error binding socket. This means that some other \n");		(void)printk(KERN_ERR "        daemon is (or was a short time ago) using port %i.\n",Port);		return 0;		}	/* Grrr... setsockopt() does this. */	sock->sk->reuse   = 1;	/* Now, start listening on the socket */		/* I have no idea what a sane backlog-value is. 48 works so far. */		error=sock->ops->listen(sock,48);		if (error!=0)		(void)printk(KERN_ERR "kHTTPd: Error listening on socket \n");		MainSocket = sock;		EnterFunction("StartListening");	return 1; }	void StopListening(void){	struct socket *sock;		EnterFunction("StopListening");	if (MainSocket==NULL) return;		sock=MainSocket;	MainSocket = NULL;	sock_release(sock);	LeaveFunction("StopListening");}