patch-2.4.22 linux-2.4.22/net/bluetooth/cmtp/sock.c

• Lines: 237
• Date: 2003-08-25 04:44:44.000000000 -0700
• Orig file: linux-2.4.21/net/bluetooth/cmtp/sock.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.21/net/bluetooth/cmtp/sock.c linux-2.4.22/net/bluetooth/cmtp/sock.c
@@ -0,0 +1,236 @@
+/* 
+   CMTP implementation for Linux Bluetooth stack (BlueZ).
+   Copyright (C) 2002-2003 Marcel Holtmann <marcel@holtmann.org>
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License version 2 as
+   published by the Free Software Foundation;
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
+   IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
+   CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 
+   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 
+   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 
+   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+   ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 
+   COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 
+   SOFTWARE IS DISCLAIMED.
+*/
+
+#include <linux/config.h>
+#include <linux/module.h>
+
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/poll.h>
+#include <linux/fcntl.h>
+#include <linux/skbuff.h>
+#include <linux/socket.h>
+#include <linux/ioctl.h>
+#include <linux/file.h>
+#include <net/sock.h>
+
+#include <asm/system.h>
+#include <asm/uaccess.h>
+
+#include "cmtp.h"
+
+#ifndef CONFIG_BLUEZ_CMTP_DEBUG
+#undef  BT_DBG
+#define BT_DBG(D...)
+#endif
+
+static inline struct socket *socki_lookup(struct inode *inode)
+{
+	return &inode->u.socket_i;
+}
+
+static struct socket *sockfd_lookup(int fd, int *err)
+{
+	struct file *file;
+	struct inode *inode;
+	struct socket *sock;
+
+	if (!(file = fget(fd))) {
+		*err = -EBADF;
+		return NULL;
+	}
+
+	inode = file->f_dentry->d_inode;
+	if (!inode->i_sock || !(sock = socki_lookup(inode))) {
+		*err = -ENOTSOCK;
+		fput(file);
+		return NULL;
+	}
+
+	if (sock->file != file) {
+		printk(KERN_ERR "socki_lookup: socket file changed!\n");
+		sock->file = file;
+	}
+	return sock;
+}
+
+static int cmtp_sock_release(struct socket *sock)
+{
+	struct sock *sk = sock->sk;
+
+	BT_DBG("sock %p sk %p", sock, sk);
+
+	if (!sk)
+		return 0;
+
+	sock_orphan(sk);
+	sock_put(sk);
+
+	MOD_DEC_USE_COUNT;
+	return 0;
+}
+
+static int cmtp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
+{
+	struct cmtp_connadd_req ca;
+	struct cmtp_conndel_req cd;
+	struct cmtp_connlist_req cl;
+	struct cmtp_conninfo ci;
+	struct socket *nsock;
+	int err;
+
+	BT_DBG("cmd %x arg %lx", cmd, arg);
+
+	switch (cmd) {
+	case CMTPCONNADD:
+		if (!capable(CAP_NET_ADMIN))
+			return -EACCES;
+
+		if (copy_from_user(&ca, (void *) arg, sizeof(ca)))
+			return -EFAULT;
+
+		nsock = sockfd_lookup(ca.sock, &err);
+		if (!nsock)
+			return err;
+
+		if (nsock->sk->state != BT_CONNECTED)
+			return -EBADFD;
+
+		err = cmtp_add_connection(&ca, nsock);
+		if (!err) {
+			if (copy_to_user((void *) arg, &ca, sizeof(ca)))
+				err = -EFAULT;
+		} else
+			fput(nsock->file);
+
+		return err;
+
+	case CMTPCONNDEL:
+		if (!capable(CAP_NET_ADMIN))
+			return -EACCES;
+
+		if (copy_from_user(&cd, (void *) arg, sizeof(cd)))
+			return -EFAULT;
+
+		return cmtp_del_connection(&cd);
+
+	case CMTPGETCONNLIST:
+		if (copy_from_user(&cl, (void *) arg, sizeof(cl)))
+			return -EFAULT;
+
+		if (cl.cnum <= 0)
+			return -EINVAL;
+
+		err = cmtp_get_connlist(&cl);
+		if (!err && copy_to_user((void *) arg, &cl, sizeof(cl)))
+			return -EFAULT;
+
+		return err;
+
+	case CMTPGETCONNINFO:
+		if (copy_from_user(&ci, (void *) arg, sizeof(ci)))
+			return -EFAULT;
+
+		err = cmtp_get_conninfo(&ci);
+		if (!err && copy_to_user((void *) arg, &ci, sizeof(ci)))
+			return -EFAULT;
+
+		return err;
+	}
+
+	return -EINVAL;
+}
+
+static struct proto_ops cmtp_sock_ops = {
+	family:		PF_BLUETOOTH,
+	release:	cmtp_sock_release,
+	ioctl:		cmtp_sock_ioctl,
+	bind:		sock_no_bind,
+	getname:	sock_no_getname,
+	sendmsg:	sock_no_sendmsg,
+	recvmsg:	sock_no_recvmsg,
+	poll:		sock_no_poll,
+	listen:		sock_no_listen,
+	shutdown:	sock_no_shutdown,
+	setsockopt:	sock_no_setsockopt,
+	getsockopt:	sock_no_getsockopt,
+	connect:	sock_no_connect,
+	socketpair:	sock_no_socketpair,
+	accept:		sock_no_accept,
+	mmap:		sock_no_mmap
+};
+
+static int cmtp_sock_create(struct socket *sock, int protocol)
+{
+	struct sock *sk;
+
+	BT_DBG("sock %p", sock);
+
+	if (sock->type != SOCK_RAW)
+		return -ESOCKTNOSUPPORT;
+
+	sock->ops = &cmtp_sock_ops;
+
+	if (!(sk = sk_alloc(PF_BLUETOOTH, GFP_KERNEL, 1)))
+		return -ENOMEM;
+
+	MOD_INC_USE_COUNT;
+
+	sock->state = SS_UNCONNECTED;
+	sock_init_data(sock, sk);
+
+	sk->destruct = NULL;
+	sk->protocol = protocol;
+
+	return 0;
+}
+
+static struct net_proto_family cmtp_sock_family_ops = {
+	family:		PF_BLUETOOTH,
+	create:		cmtp_sock_create
+};
+
+int cmtp_init_sockets(void)
+{
+	int err;
+
+	if ((err = bluez_sock_register(BTPROTO_CMTP, &cmtp_sock_family_ops))) {
+		BT_ERR("Can't register CMTP socket layer (%d)", err);
+		return err;
+	}
+
+	return 0;
+}
+
+void cmtp_cleanup_sockets(void)
+{
+	int err;
+
+	if ((err = bluez_sock_unregister(BTPROTO_CMTP)))
+		BT_ERR("Can't unregister CMTP socket layer (%d)", err);
+
+	return;
+}