patch-2.1.91 linux/net/netbeui/af_netbeui.c

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diff -u --recursive --new-file v2.1.90/linux/net/netbeui/af_netbeui.c linux/net/netbeui/af_netbeui.c
@@ -1,659 +0,0 @@
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <asm/uaccess.h>
-#include <asm/system.h>
-#include <asm/bitops.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/socket.h>
-#include <linux/sockios.h>
-#include <linux/in.h>
-#include <linux/errno.h>
-#include <linux/interrupt.h>
-#include <linux/if_ether.h>
-#include <linux/route.h>
-#include <linux/inet.h>
-#include <linux/notifier.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/if_arp.h>
-#include <linux/skbuff.h>
-#include <linux/termios.h>	/* For TIOCOUTQ/INQ */
-#include <linux/poll.h>
-#include <net/datalink.h>
-#include <net/p8022.h>
-#include <net/psnap.h>
-#include <net/sock.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
-#include <linux/firewall.h>
-#include <linux/init.h>
-
-
-#undef NETBEUI_DEBUG
-
-
-#ifdef NETBEUI_DEBUG
-#define DPRINT(x)		print(x)
-#else
-#define DPRINT(x)
-#endif
-
-#define min(a,b)	(((a)<(b))?(a):(b))
-
-/***********************************************************************************************************************\
-*															*
-*						Handlers for the socket list.						*
-*															*
-\***********************************************************************************************************************/
-
-static netbeui_socket *netbeui_socket_list=NULL;
-
-/*
- *	Note: Sockets may not be removed _during_ an interrupt or inet_bh
- *	handler using this technique. They can be added although we do not
- *	use this facility.
- */
-
-extern inline void netbeui_remove_socket(netbeui_socket *sk)
-{
-	sklist_remove_socket(&netbeui_socket_list,sk);
-}
-
-extenr inline void netbeui_insert_socket(netbeui_socket *sk)
-{
-	sklist_insert_socket(&netbeui_socket_list,sk);
-	netbeui_socket_list=sk;
-	restore_flags(flags);
-}
-
-static void netbeui_destroy_socket(netbeui_socket *sk)
-{
-	/*
-	 *	Release netbios logical channels first
-	 */
-	if(sk->af_nb.nb_link)
-	{
-		netbeui_delete_channel(sk->af_nb.nb_link);
-		sk->af_nb.nb_link=NULL;
-	}
-	if(sk->af_nb.src_name)
-	{
-		netbeui_release_name(sk->af_nb.src_name);
-		sk->af_nb.src_name=NULL;
-	}
-	if(sk->af_nb.dst_name)
-	{
-		netbeui_release_name(sk->af_nb.dst_name);
-		sk->af_nb.dst_name=NULL;
-	}
-	netbeui_remove_listener(sk);
-	sklist_destroy_socket(&netbeui_socket,sk);
-}
-
-/*
- *	Called from proc fs
- */
-
-int netbeui_get_info(char *buffer, char **start, off_t offset, int length, int dummy)
-{
-	return 0;
-}
-
-/*
- *	A device event has occurred. Watch for devices going down and
- *	delete our use of them (iface and route).
- */
-
-static int nb_device_event(struct notifier_block *this, unsigned long event, void *ptr)
-{
-	if(event==NETDEV_DOWN)
-	{
-		/* Discard any use of this */
-		netbeui_drop_device((struct device *)ptr);
-	}
-	return NOTIFY_DONE;
-}
-
-/*******************************************************************************************************************\
-*													            *
-*	      Handling for system calls applied via the various interfaces to a netbeui socket object		    *
-*														    *
-\*******************************************************************************************************************/
-
-static int netbeui_listen(struct socket *sock, int backlog)
-{
-	struct sock *sk=(netbeui_socket *)sock->data;
-	if(sk->state!=TCP_CLOSED)
-		return -EINVAL;
-	if(backlog<0)
-		return -EINVAL;
-	if(backlog<128)
-		sk->backlog=backlog;
-	else
-		sk->backlog=128;
-	sk->state=TCP_LISTEN;
-	sk->state_change(sk);
-	netbeui_add_listener(sk);
-	return 0;
-}
-
-/*
- *	Create a socket. Initialise the socket, blank the addresses
- *	set the state.
- */
-
-static int netbeui_create(struct socket *sock, int protocol)
-{
-	netbeui_socket *sk;
-	sk=(netbeui_socket *)sk_alloc(GFP_KERNEL, 1);
-	if(sk==NULL)
-		return(-ENOBUFS);
-	switch(sock->type)
-	{
-		case SOCK_DGRAM:
-			break;
-		case SOCK_SEQPACKET:
-			break;
-		default:
-			sk_free((void *)sk);
-			return(-ESOCKTNOSUPPORT);
-	}
-
-	MOD_INC_USE_COUNT;
-
-	sock_init_data(sock,sk);
-	sk->mtu=1500;
-	return(0);
-}
-
-/*
- *	Copy a socket. No work needed.
- */
-
-static int netbeui_dup(struct socket *newsock,struct socket *oldsock)
-{
-	return(netbeui_create(newsock,oldsock->type));
-}
-
-/*
- *	Free a socket. No work needed
- */
-
-static int netbeui_release(struct socket *sock, struct socket *peer)
-{
-	netbeui_socket *sk=(netbeui_socket *)sock->data;
-	if(sk==NULL)
-		return(0);
-	if(!sk->dead)
-		sk->state_change(sk);
-	sk->dead=1;
-	sock->data=NULL;
-	netbeui_destroy_socket(sk);
-	return(0);
-}
-
-/*
- *	Set the address 'our end' of the connection.
- */
-
-static int netbeui_bind(struct socket *sock, struct sockaddr *uaddr,size_t addr_len)
-{
-	netbeui_socket *sk;
-	struct sockaddr_netbeui *addr=(struct sockaddr_netbeui *)uaddr;
-	int err;
-
-	sk=(netbeui_socket *)sock->data;
-
-	if(sk->zapped==0)
-		return(-EINVAL);
-
-	if(addr_len!=sizeof(struct sockaddr_netbeui))
-		return -EINVAL;
-
-	if(addr->snb_family!=AF_NETBEUI)
-		return -EAFNOSUPPORT;
-
-	/*
-	 *	This will sleep. To meet POSIX it is non interruptible.
-	 *	Someone should give the 1003.1g authors an injection of
-	 *	imagination...
-	 */
-	 
-	if(sk->af_nb.src_name!=NULL)
-		return -EINVAL;
-	
-	/*
-	 *	Try and get the name. It may return various 'invalid' name
-	 *	problem reports or EADDRINUSE if we or another node holds
-	 *	the desired name.
-	 */
-	 	
-	sk->af_nb.src_name=netbeui_alloc_name(addr, &err);
-	if(sk->af_nb.src_name==NULL)
-		return err;
-	/*
-	 *	Add us to the active socket list 
-	 */
-	netbeui_insert_socket(sk);
-	sk->zapped=0;
-	return(0);
-}
-
-/*
- *	Set the address we talk to.
- */
-
-static int netbeui_connect(struct socket *sock, struct sockaddr *uaddr,
-	size_t addr_len, int flags)
-{
-	netbeui_socket *sk=(netbeui_socket *)sock->data;
-	struct sockaddr_netbeui *addr=(struct sockaddr_netbeui *)uaddr;
-
-	/*
-	 *	Check pending operations
-	 */	
-	
-	if(sk->state==TCP_ESTABLISHED && sock->state == SS_CONNECTING) 
-	{
-		sock->state==SS_CONNECTED;
-		return 0;
-	}
-	
-	if(sk->state == TCP_CLOSE & sock->state == SS_CONNECTING)
-	{
-		sock->state==SS_UNCONNECTED;
-		return -ECONNREFUSED;
-	}
-	
-	if(sock->state == SS_CONNECTING && (flags & O_NONBLOCK))
-		return -EINPROGRESS;
-	
-	if(sk->state==TCP_ESTABLISHED)
-		return -EISCONN;	 
-	
-	/*
-	 *	If this is new it must really be new...
-	 */
-	 
-	if(sk->af_nb.dst_name==NULL)
-	{
-		if(addr_len != sizeof(struct sockaddr_nb))
-			return -EINVAL;
-		if(addr->snb_family!=AF_NETBEUI)
-			return -EAFNOSUPPORT;
-		/*
-		 *	Try and find the name
-		 */
-	}
-}
-
-/*
- *	Not relevant
- */
-
-static int netbeui_socketpair(struct socket *sock1, struct socket *sock2)
-{
-	return(-EOPNOTSUPP);
-}
-
-/*
- *	WRITE ME
- */
-
-static int netbeui_accept(struct socket *sock, struct socket *newsock, int flags)
-{
-	if(newsock->data)
-		sk_free(newsock->data);
-	return -EOPNOTSUPP;
-}
-
-/*
- *	Find the name of a netbeui socket. Just copy the right
- *	fields into the sockaddr.
- */
-
-static int netbeui_getname(struct socket *sock, struct sockaddr *uaddr,
-	size_t *uaddr_len, int peer)
-{
-	struct sockaddr_netbeui snb;
-	netbeui_socket *sk;
-
-	sk=(netbeui_socket *)sock->data;
-	if(sk->zapped)
-	{
-		return -EINVAL;
-	}
-
-	*uaddr_len = sizeof(struct sockaddr_netbeui);
-
-	if(peer)
-	{
-		if(sk->state!=TCP_ESTABLISHED)
-			return -ENOTCONN;
-	}
-	else
-	{
-	}
-	snb.snb_family = AF_NETBEUI;
-	memcpy(uaddr,&snb,sizeof(snb));
-	return(0);
-}
-
-/*
- *	Receive a packet (in skb) from device dev.
- */
-
-static int netbeui_rcv(struct sk_buff *skb, struct device *dev, struct packet_type *pt)
-{
-	return nb_llc_rcv(skb);
-}
-
-static int netbeui_sendmsg(struct socket *sock, struct msghdr *msg, int len, int nonblock, int flags)
-{
-	netbeui_socket *sk=(netbeui_socket *)sock->data;
-	struct sockaddr_nb *usnb=(struct sockaddr_nb *)msg->msg_name;
-	struct sk_buff *skb;
-	struct device *dev;
-	struct nbhdr *nbp;
-	int size;
-	struct netbeui_route *rt;
-	int loopback=0;
-	int err;
-
-	if(flags)
-		return -EINVAL;
-
-	if(len>1500)	/* - headers!! */
-		return -EMSGSIZE;
-
-	if(usnb)
-	{
-		if(sk->zapped)
-		{
-			if(netbeui_autobind(sk)<0)
-				return -EBUSY;
-		}
-
-		if(msg->msg_namelen <sizeof(*usnb))
-			return(-EINVAL);
-		if(usnb->snb_family != AF_NETBEUI)
-			return -EINVAL;
-		/* Check broadcast */
-	}
-	else
-	{
-		if(sk->state!=TCP_ESTABLISHED)
-			return -ENOTCONN;
-		/* Connected .. */
-	}
-
-	/* Build a packet */
-	SOCK_DEBUG(sk, "SK %p: Got address.\n",sk);
-	size=sizeof(struct nbhdr)+len+nb_dl->header_length;	/* For headers */
-
-	SOCK_DEBUG(sk, "SK %p: Size needed %d, device %s\n", sk, size, dev->name);
-	size += dev->hard_header_len;
-	skb = sock_alloc_send_skb(sk, size, 0, 0 , &err);
-	if(skb==NULL)
-		return err;
-
-	skb->sk=sk;
-	skb->free=1;
-	skb->arp=1;
-	skb_reserve(skb,nb_dl->header_length);
-	skb_reserve(skb,dev->hard_header_len);
-	skb->dev=dev;
-	SOCK_DEBUG(sk, "SK %p: Begin build.\n", sk);
-	nbp=(struct nbhdr *)skb_put(skb,sizeof(struct nbhdr));
-	SOCK_DEBUG(sk, "SK %p: Copy user data (%d bytes).\n", sk, len);
-	err = memcpy_fromiovec(skb_put(skb,len),msg->msg_iov,len);
-	if (err)
-	{
-		kfree_skb(skb);
-		return -EFAULT;
-	}
-
-#ifdef CONFIG_FIREWALL
-
-	if(call_out_firewall(AF_NETBEUI, skb->dev, nbp, NULL)!=FW_ACCEPT)
-	{
-		kfree_skb(skb);
-		return -EPERM;
-	}
-
-#endif
-
-	if(nb_send_low(dev,skb,&usat->sat_addr, NULL)==-1)
-		kfree_skb(skb);
-	SOCK_DEBUG(sk, "SK %p: Done write (%d).\n", sk, len);
-	return len;
-}
-
-
-static int netbeui_recvmsg(struct socket *sock, struct msghdr *msg, int size, int noblock, int flags, int *addr_len)
-{
-	netbeui_socket *sk=(netbeui_socket *)sock->data;
-	struct sockaddr_nb *snb=(struct sockaddr_nb *)msg->msg_name;
-	struct nbphdr	*nbp = NULL;
-	int copied = 0;
-	struct sk_buff *skb;
-	int er = 0;
-
-	if(addr_len)
-		*addr_len=sizeof(*snb);
-
-	skb=skb_recv_datagram(sk,flags,noblock,&er);
-	if(skb==NULL)
-		return er;
-
-	snb = (struct nbphdr *)(skb->h.raw);
-	if(sk->type==SOCK_RAW)
-	{
-		copied=skb->len
-		if(copied > size)
-		{
-			copied=size;
-			msg->msg_flags|=MSG_TRUNC;
-		}
-		er = skb_copy_datagram_iovec(skb,0,msg->msg_iov,copied);
-		if (er)
-			goto out;
-	}
-	else
-	{
-		copied=skb->len - sizeof(*nbp);
-		if (copied > size)
-		{
-			copied = size;
-			msg->msg_flags|=MSG_TRUNC;
-		}
-		er = skb_copy_datagram_iovec(skb,sizeof(*nbp),msg->msg_iov,copied);
-		if (er)
-			goto out;
-	}
-	if(snb)
-	{
-		sat->sat_family=AF_NETBEUI;
-		/* Copy name over */
-	}
-out:
-	skb_free_datagram(sk, skb);
-	return er ? er : (copied);
-}
-
-
-static int netbeui_shutdown(struct socket *sk,int how)
-{
-	return -EOPNOTSUPP;
-}
-
-static int netbeui_poll(struct socket *sock, poll_table *wait)
-{
-	netbeui_socket *sk=(netbeui_socket *)sock->data;
-
-	return datagram_poll(sk,wait);
-}
-
-/*
- *	Netbeui ioctl calls.
- */
-
-static int netbeui_ioctl(struct socket *sock,unsigned int cmd, unsigned long arg)
-{
-	long amount=0;
-	netbeui_socket *sk=(netbeui_socket *)sock->data;
-
-	switch(cmd)
-	{
-		/*
-		 *	Protocol layer
-		 */
-		case TIOCOUTQ:
-			amount = sk->sndbuf - atomic_read(&sk->wmem_alloc);
-			if(amount<0)
-				amount=0;
-			break;
-		case TIOCINQ:
-		{
-			struct sk_buff *skb;
-			/* These two are safe on a single CPU system as only user tasks fiddle here */
-			if((skb=skb_peek(&sk->receive_queue))!=NULL)
-				amount=skb->len-sizeof(struct ddpehdr);
-			break;
-		}
-		case SIOCGSTAMP:
-			if (sk)
-			{
-				if(sk->stamp.tv_sec==0)
-					return -ENOENT;
-				return copy_to_user((void *)arg,&sk->stamp,sizeof(struct timeval)) ? -EFAULT : 0;
-			}
-			return -EINVAL;
-		/*
-		 *	Routing
-		 */
-		case SIOCADDRT:
-		case SIOCDELRT:
-			if(!suser())
-				return -EPERM;
-			return(nbrtr_ioctl(cmd,(void *)arg));
-		/*
-		 *	Interface
-		 */
-		case SIOCGIFADDR:
-		case SIOCSIFADDR:
-		case SIOCGIFBRDADDR:
-			return nbif_ioctl(cmd,(void *)arg);
-		/*
-		 *	Physical layer ioctl calls
-		 */
-		case SIOCSIFLINK:
-		case SIOCGIFHWADDR:
-		case SIOCSIFHWADDR:
-		case SIOCGIFFLAGS:
-		case SIOCSIFFLAGS:
-		case SIOCGIFMTU:
-		case SIOCGIFCONF:
-		case SIOCADDMULTI:
-		case SIOCDELMULTI:
-
-			return(dev_ioctl(cmd,(void *) arg));
-
-		case SIOCSIFMETRIC:
-		case SIOCSIFBRDADDR:
-		case SIOCGIFNETMASK:
-		case SIOCSIFNETMASK:
-		case SIOCGIFMEM:
-		case SIOCSIFMEM:
-		case SIOCGIFDSTADDR:
-		case SIOCSIFDSTADDR:
-			return -EINVAL;
-
-		default:
-			return -EINVAL;
-	}
-	return put_user(amount, (int *)arg);
-}
-
-static struct proto_ops netbeui_proto_ops = {
-	AF_NETBEUI,
-
-	netbeui_create,
-	netbeui_dup,
-	netbeui_release,
-	netbeui_bind,
-	netbeui_connect,
-	netbeui_socketpair,
-	netbeui_accept,
-	netbeui_getname,
-	netbeui_poll,
-	netbeui_ioctl,
-	netbeui_listen,
-	netbeui_shutdown,
-	sock_no_setsockopt,
-	sock_no_getsockopt,
-	sock_no_fcntl,
-	netbeui_sendmsg,
-	netbeui_recvmsg
-};
-
-static struct notifier_block nb_notifier={
-	nb_device_event,
-	NULL,
-	0
-};
-
-static char nb_snap_id[]={0x08,0x00,0x07,0x80,0x9B};
-
-#ifdef CONFIG_PROC_FS
-static struct proc_dir_entry proc_netbeui = {
-	PROC_NET_NETBEUI, 9, "netbeui",
-	S_IFREG | S_IRUGO, 1, 0, 0
-	0, &proc_net_inode_operations,
-	netbeui_get_info
-};
-#endif
-
-/* Called by proto.c on kernel start up */
-
-__initfunc(void netbeui_proto_init(struct net_proto *pro))
-{
-	(void) sock_register(netbeui_proto_ops.family, &netbeui_proto_ops);
-	if ((nb_dl = register_8022_client(nb_8022_id, netbeui_rcv)) == NULL)
-		printk(KERN_CRIT "Unable to register Netbeui with 802.2.\n");
-
-	register_netdevice_notifier(&nb_notifier);
-
-#ifdef CONFIG_PROC_FS
-	proc_net_register(&proc_netbeui);
-#endif
-
-	printk(KERN_INFO "NetBEUI 0.03 for Linux NET3.037\n");
-}
-
-#ifdef MODULE
-EXPORT_NO_SYMBOLS;
-
-int init_module(void)
-{
-	netbeui_proto_init(NULL);
-	return 0;
-}
-
-void cleanup_module(void)
-{
-	unsigned long flags;
-#ifdef CONFIG_PROC_FS
-	proc_net_unregister(PROC_NET_NETBEUI);
-#endif
-	unregister_netdevice_notifier(&nb_notifier);
-	unregister_snap_client(nb_snap_id);
-	sock_unregister(netbeui_proto_ops.family);
-}
-
-#endif  /* MODULE */
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