linux/net/bluetooth/rfcomm/sock.c

/*
   RFCOMM implementation for Linux Bluetooth stack (BlueZ).
   Copyright (C) 2002 Maxim Krasnyansky <[email protected]>
   Copyright (C) 2002 Marcel Holtmann <[email protected]>

   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.
*/

/*
 * RFCOMM sockets.
 */
#include <linux/compat.h>
#include <linux/export.h>
#include <linux/debugfs.h>
#include <linux/sched/signal.h>

#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
#include <net/bluetooth/l2cap.h>
#include <net/bluetooth/rfcomm.h>

static const struct proto_ops rfcomm_sock_ops;

static struct bt_sock_list rfcomm_sk_list = …;

static void rfcomm_sock_close(struct sock *sk);
static void rfcomm_sock_kill(struct sock *sk);

/* ---- DLC callbacks ----
 *
 * called under rfcomm_dlc_lock()
 */
static void rfcomm_sk_data_ready(struct rfcomm_dlc *d, struct sk_buff *skb)
{ … }

static void rfcomm_sk_state_change(struct rfcomm_dlc *d, int err)
{ … }

/* ---- Socket functions ---- */
static struct sock *__rfcomm_get_listen_sock_by_addr(u8 channel, bdaddr_t *src)
{ … }

/* Find socket with channel and source bdaddr.
 * Returns closest match.
 */
static struct sock *rfcomm_get_sock_by_channel(int state, u8 channel, bdaddr_t *src)
{ … }

static void rfcomm_sock_destruct(struct sock *sk)
{ … }

static void rfcomm_sock_cleanup_listen(struct sock *parent)
{ … }

/* Kill socket (only if zapped and orphan)
 * Must be called on unlocked socket.
 */
static void rfcomm_sock_kill(struct sock *sk)
{ … }

static void __rfcomm_sock_close(struct sock *sk)
{ … }

/* Close socket.
 * Must be called on unlocked socket.
 */
static void rfcomm_sock_close(struct sock *sk)
{ … }

static void rfcomm_sock_init(struct sock *sk, struct sock *parent)
{ … }

static struct proto rfcomm_proto = …;

static struct sock *rfcomm_sock_alloc(struct net *net, struct socket *sock,
				      int proto, gfp_t prio, int kern)
{ … }

static int rfcomm_sock_create(struct net *net, struct socket *sock,
			      int protocol, int kern)
{ … }

static int rfcomm_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
{ … }

static int rfcomm_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags)
{ … }

static int rfcomm_sock_listen(struct socket *sock, int backlog)
{ … }

static int rfcomm_sock_accept(struct socket *sock, struct socket *newsock,
			      struct proto_accept_arg *arg)
{ … }

static int rfcomm_sock_getname(struct socket *sock, struct sockaddr *addr, int peer)
{ … }

static int rfcomm_sock_sendmsg(struct socket *sock, struct msghdr *msg,
			       size_t len)
{ … }

static int rfcomm_sock_recvmsg(struct socket *sock, struct msghdr *msg,
			       size_t size, int flags)
{ … }

static int rfcomm_sock_setsockopt_old(struct socket *sock, int optname,
		sockptr_t optval, unsigned int optlen)
{ … }

static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname,
		sockptr_t optval, unsigned int optlen)
{ … }

static int rfcomm_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen)
{ … }

static int rfcomm_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen)
{ … }

static int rfcomm_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{ … }

#ifdef CONFIG_COMPAT
static int rfcomm_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{ … }
#endif

static int rfcomm_sock_shutdown(struct socket *sock, int how)
{ … }

static int rfcomm_sock_release(struct socket *sock)
{ … }

/* ---- RFCOMM core layer callbacks ----
 *
 * called under rfcomm_lock()
 */
int rfcomm_connect_ind(struct rfcomm_session *s, u8 channel, struct rfcomm_dlc **d)
{ … }

static int rfcomm_sock_debugfs_show(struct seq_file *f, void *p)
{ … }

DEFINE_SHOW_ATTRIBUTE(…);

static struct dentry *rfcomm_sock_debugfs;

static const struct proto_ops rfcomm_sock_ops = …;

static const struct net_proto_family rfcomm_sock_family_ops = …;

int __init rfcomm_init_sockets(void)
{ … }

void __exit rfcomm_cleanup_sockets(void)
{ … }