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Bluetooth: Add global deferred socket parameter 

The L2CAP and RFCOMM applications require support for authorization
and the ability of rejecting incoming connection requests. The socket
interface is not really able to support this.

This patch does the ground work for a socket option to defer connection
setup. Setting this option allows calling of accept() and then the
first read() will trigger the final connection setup. Calling close()
would reject the connection.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Marcel Holtmann 2009-01-15 21:52:16 +01:00
parent d58daf42d2
commit c4f912e155
2 changed files with 9 additions and 2 deletions
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3
include/net/bluetooth/bluetooth.h
View File

@ -53,6 +53,8 @@
#define SOL_SCO 17
#define SOL_RFCOMM 18
#define BT_DEFER_SETUP 7
#define BT_INFO(fmt, arg...) printk(KERN_INFO "Bluetooth: " fmt "\n" , ## arg)
#define BT_ERR(fmt, arg...) printk(KERN_ERR "%s: " fmt "\n" , __func__ , ## arg)
#define BT_DBG(fmt, arg...) pr_debug("%s: " fmt "\n" , __func__ , ## arg)
@ -108,6 +110,7 @@ struct bt_sock {
bdaddr_t dst;
struct list_head accept_q;
struct sock *parent;
u32 defer_setup;
};
struct bt_sock_list {

8
net/bluetooth/af_bluetooth.c
View File

@ -217,7 +217,8 @@ struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock)
continue;
}
if (sk->sk_state == BT_CONNECTED || !newsock) {
if (sk->sk_state == BT_CONNECTED || !newsock ||
bt_sk(parent)->defer_setup) {
bt_accept_unlink(sk);
if (newsock)
sock_graft(sk, newsock);
@ -232,7 +233,7 @@ struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock)
EXPORT_SYMBOL(bt_accept_dequeue);
int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
struct msghdr *msg, size_t len, int flags)
struct msghdr *msg, size_t len, int flags)
{
int noblock = flags & MSG_DONTWAIT;
struct sock *sk = sock->sk;
@ -275,6 +276,9 @@ static inline unsigned int bt_accept_poll(struct sock *parent)
struct list_head *p, *n;
struct sock *sk;
if (bt_sk(parent)->defer_setup)
return POLLIN | POLLRDNORM;
list_for_each_safe(p, n, &bt_sk(parent)->accept_q) {
sk = (struct sock *) list_entry(p, struct bt_sock, accept_q);
if (sk->sk_state == BT_CONNECTED)