zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/net/bluetooth/af_bluetooth.c b/ap/os/linux/linux-3.4.x/net/bluetooth/af_bluetooth.c
new file mode 100644
index 0000000..3f97050
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/net/bluetooth/af_bluetooth.c
@@ -0,0 +1,650 @@
+/*
+ BlueZ - Bluetooth protocol stack for Linux
+ Copyright (C) 2000-2001 Qualcomm Incorporated
+
+ Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
+
+ 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.
+*/
+
+/* Bluetooth address family and sockets. */
+
+#include <linux/module.h>
+
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/skbuff.h>
+#include <linux/init.h>
+#include <linux/poll.h>
+#include <net/sock.h>
+#include <asm/ioctls.h>
+#include <linux/kmod.h>
+
+#include <net/bluetooth/bluetooth.h>
+
+#ifdef CONFIG_ANDROID_PARANOID_NETWORK
+#include <linux/android_aid.h>
+#endif
+
+#ifndef CONFIG_BT_SOCK_DEBUG
+#undef BT_DBG
+#define BT_DBG(D...)
+#endif
+
+#define VERSION "2.16"
+
+/* Bluetooth sockets */
+#define BT_MAX_PROTO 8
+static const struct net_proto_family *bt_proto[BT_MAX_PROTO];
+static DEFINE_RWLOCK(bt_proto_lock);
+
+static struct lock_class_key bt_lock_key[BT_MAX_PROTO];
+static const char *const bt_key_strings[BT_MAX_PROTO] = {
+ "sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP",
+ "sk_lock-AF_BLUETOOTH-BTPROTO_HCI",
+ "sk_lock-AF_BLUETOOTH-BTPROTO_SCO",
+ "sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM",
+ "sk_lock-AF_BLUETOOTH-BTPROTO_BNEP",
+ "sk_lock-AF_BLUETOOTH-BTPROTO_CMTP",
+ "sk_lock-AF_BLUETOOTH-BTPROTO_HIDP",
+ "sk_lock-AF_BLUETOOTH-BTPROTO_AVDTP",
+};
+
+static struct lock_class_key bt_slock_key[BT_MAX_PROTO];
+static const char *const bt_slock_key_strings[BT_MAX_PROTO] = {
+ "slock-AF_BLUETOOTH-BTPROTO_L2CAP",
+ "slock-AF_BLUETOOTH-BTPROTO_HCI",
+ "slock-AF_BLUETOOTH-BTPROTO_SCO",
+ "slock-AF_BLUETOOTH-BTPROTO_RFCOMM",
+ "slock-AF_BLUETOOTH-BTPROTO_BNEP",
+ "slock-AF_BLUETOOTH-BTPROTO_CMTP",
+ "slock-AF_BLUETOOTH-BTPROTO_HIDP",
+ "slock-AF_BLUETOOTH-BTPROTO_AVDTP",
+};
+
+void bt_sock_reclassify_lock(struct sock *sk, int proto)
+{
+ BUG_ON(!sk);
+ BUG_ON(sock_owned_by_user(sk));
+
+ sock_lock_init_class_and_name(sk,
+ bt_slock_key_strings[proto], &bt_slock_key[proto],
+ bt_key_strings[proto], &bt_lock_key[proto]);
+}
+EXPORT_SYMBOL(bt_sock_reclassify_lock);
+
+int bt_sock_register(int proto, const struct net_proto_family *ops)
+{
+ int err = 0;
+
+ if (proto < 0 || proto >= BT_MAX_PROTO)
+ return -EINVAL;
+
+ write_lock(&bt_proto_lock);
+
+ if (bt_proto[proto])
+ err = -EEXIST;
+ else
+ bt_proto[proto] = ops;
+
+ write_unlock(&bt_proto_lock);
+
+ return err;
+}
+EXPORT_SYMBOL(bt_sock_register);
+
+int bt_sock_unregister(int proto)
+{
+ int err = 0;
+
+ if (proto < 0 || proto >= BT_MAX_PROTO)
+ return -EINVAL;
+
+ write_lock(&bt_proto_lock);
+
+ if (!bt_proto[proto])
+ err = -ENOENT;
+ else
+ bt_proto[proto] = NULL;
+
+ write_unlock(&bt_proto_lock);
+
+ return err;
+}
+EXPORT_SYMBOL(bt_sock_unregister);
+
+#ifdef CONFIG_ANDROID_PARANOID_NETWORK
+static inline int current_has_bt_admin(void)
+{
+ return (!current_euid() || in_egroup_p(AID_NET_BT_ADMIN));
+}
+
+static inline int current_has_bt(void)
+{
+ return (current_has_bt_admin() || in_egroup_p(AID_NET_BT));
+}
+# else
+static inline int current_has_bt_admin(void)
+{
+ return 1;
+}
+
+static inline int current_has_bt(void)
+{
+ return 1;
+}
+#endif
+
+static int bt_sock_create(struct net *net, struct socket *sock, int proto,
+ int kern)
+{
+ int err;
+
+ if (proto == BTPROTO_RFCOMM || proto == BTPROTO_SCO ||
+ proto == BTPROTO_L2CAP) {
+ if (!current_has_bt())
+ return -EPERM;
+ } else if (!current_has_bt_admin())
+ return -EPERM;
+
+ if (net != &init_net)
+ return -EAFNOSUPPORT;
+
+ if (proto < 0 || proto >= BT_MAX_PROTO)
+ return -EINVAL;
+
+ if (!bt_proto[proto])
+ request_module("bt-proto-%d", proto);
+
+ err = -EPROTONOSUPPORT;
+
+ read_lock(&bt_proto_lock);
+
+ if (bt_proto[proto] && try_module_get(bt_proto[proto]->owner)) {
+ err = bt_proto[proto]->create(net, sock, proto, kern);
+ if (!err)
+ bt_sock_reclassify_lock(sock->sk, proto);
+ module_put(bt_proto[proto]->owner);
+ }
+
+ read_unlock(&bt_proto_lock);
+
+ return err;
+}
+
+void bt_sock_link(struct bt_sock_list *l, struct sock *sk)
+{
+ write_lock(&l->lock);
+ sk_add_node(sk, &l->head);
+ write_unlock(&l->lock);
+}
+EXPORT_SYMBOL(bt_sock_link);
+
+void bt_sock_unlink(struct bt_sock_list *l, struct sock *sk)
+{
+ write_lock(&l->lock);
+ sk_del_node_init(sk);
+ write_unlock(&l->lock);
+}
+EXPORT_SYMBOL(bt_sock_unlink);
+
+void bt_accept_enqueue(struct sock *parent, struct sock *sk)
+{
+ BT_DBG("parent %p, sk %p", parent, sk);
+
+ sock_hold(sk);
+ list_add_tail(&bt_sk(sk)->accept_q, &bt_sk(parent)->accept_q);
+ bt_sk(sk)->parent = parent;
+ parent->sk_ack_backlog++;
+}
+EXPORT_SYMBOL(bt_accept_enqueue);
+
+void bt_accept_unlink(struct sock *sk)
+{
+ BT_DBG("sk %p state %d", sk, sk->sk_state);
+
+ list_del_init(&bt_sk(sk)->accept_q);
+ bt_sk(sk)->parent->sk_ack_backlog--;
+ bt_sk(sk)->parent = NULL;
+ sock_put(sk);
+}
+EXPORT_SYMBOL(bt_accept_unlink);
+
+struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock)
+{
+ struct list_head *p, *n;
+ struct sock *sk;
+
+ BT_DBG("parent %p", parent);
+
+ list_for_each_safe(p, n, &bt_sk(parent)->accept_q) {
+ sk = (struct sock *) list_entry(p, struct bt_sock, accept_q);
+
+ lock_sock(sk);
+
+ /* FIXME: Is this check still needed */
+ if (sk->sk_state == BT_CLOSED) {
+ release_sock(sk);
+ bt_accept_unlink(sk);
+ continue;
+ }
+
+ if (sk->sk_state == BT_CONNECTED || !newsock ||
+ bt_sk(parent)->defer_setup) {
+ bt_accept_unlink(sk);
+ if (newsock)
+ sock_graft(sk, newsock);
+
+ release_sock(sk);
+ return sk;
+ }
+
+ release_sock(sk);
+ }
+
+ return NULL;
+}
+EXPORT_SYMBOL(bt_accept_dequeue);
+
+int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
+ struct msghdr *msg, size_t len, int flags)
+{
+ int noblock = flags & MSG_DONTWAIT;
+ struct sock *sk = sock->sk;
+ struct sk_buff *skb;
+ size_t copied;
+ int err;
+
+ BT_DBG("sock %p sk %p len %zu", sock, sk, len);
+
+ if (flags & (MSG_OOB))
+ return -EOPNOTSUPP;
+
+ skb = skb_recv_datagram(sk, flags, noblock, &err);
+ if (!skb) {
+ if (sk->sk_shutdown & RCV_SHUTDOWN)
+ return 0;
+ return err;
+ }
+
+ copied = skb->len;
+ if (len < copied) {
+ msg->msg_flags |= MSG_TRUNC;
+ copied = len;
+ }
+
+ skb_reset_transport_header(skb);
+ err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
+ if (err == 0)
+ sock_recv_ts_and_drops(msg, sk, skb);
+
+ skb_free_datagram(sk, skb);
+
+ return err ? : copied;
+}
+EXPORT_SYMBOL(bt_sock_recvmsg);
+
+static long bt_sock_data_wait(struct sock *sk, long timeo)
+{
+ DECLARE_WAITQUEUE(wait, current);
+
+ add_wait_queue(sk_sleep(sk), &wait);
+ for (;;) {
+ set_current_state(TASK_INTERRUPTIBLE);
+
+ if (!skb_queue_empty(&sk->sk_receive_queue))
+ break;
+
+ if (sk->sk_err || (sk->sk_shutdown & RCV_SHUTDOWN))
+ break;
+
+ if (signal_pending(current) || !timeo)
+ break;
+
+ set_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags);
+ release_sock(sk);
+ timeo = schedule_timeout(timeo);
+ lock_sock(sk);
+ clear_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags);
+ }
+
+ __set_current_state(TASK_RUNNING);
+ remove_wait_queue(sk_sleep(sk), &wait);
+ return timeo;
+}
+
+int bt_sock_stream_recvmsg(struct kiocb *iocb, struct socket *sock,
+ struct msghdr *msg, size_t size, int flags)
+{
+ struct sock *sk = sock->sk;
+ int err = 0;
+ size_t target, copied = 0;
+ long timeo;
+
+ if (flags & MSG_OOB)
+ return -EOPNOTSUPP;
+
+ BT_DBG("sk %p size %zu", sk, size);
+
+ lock_sock(sk);
+
+ target = sock_rcvlowat(sk, flags & MSG_WAITALL, size);
+ timeo = sock_rcvtimeo(sk, flags & MSG_DONTWAIT);
+
+ do {
+ struct sk_buff *skb;
+ int chunk;
+
+ skb = skb_dequeue(&sk->sk_receive_queue);
+ if (!skb) {
+ if (copied >= target)
+ break;
+
+ err = sock_error(sk);
+ if (err)
+ break;
+ if (sk->sk_shutdown & RCV_SHUTDOWN)
+ break;
+
+ err = -EAGAIN;
+ if (!timeo)
+ break;
+
+ timeo = bt_sock_data_wait(sk, timeo);
+
+ if (signal_pending(current)) {
+ err = sock_intr_errno(timeo);
+ goto out;
+ }
+ continue;
+ }
+
+ chunk = min_t(unsigned int, skb->len, size);
+ if (skb_copy_datagram_iovec(skb, 0, msg->msg_iov, chunk)) {
+ skb_queue_head(&sk->sk_receive_queue, skb);
+ if (!copied)
+ copied = -EFAULT;
+ break;
+ }
+ copied += chunk;
+ size -= chunk;
+
+ sock_recv_ts_and_drops(msg, sk, skb);
+
+ if (!(flags & MSG_PEEK)) {
+ int skb_len = skb_headlen(skb);
+
+ if (chunk <= skb_len) {
+ __skb_pull(skb, chunk);
+ } else {
+ struct sk_buff *frag;
+
+ __skb_pull(skb, skb_len);
+ chunk -= skb_len;
+
+ skb_walk_frags(skb, frag) {
+ if (chunk <= frag->len) {
+ /* Pulling partial data */
+ skb->len -= chunk;
+ skb->data_len -= chunk;
+ __skb_pull(frag, chunk);
+ break;
+ } else if (frag->len) {
+ /* Pulling all frag data */
+ chunk -= frag->len;
+ skb->len -= frag->len;
+ skb->data_len -= frag->len;
+ __skb_pull(frag, frag->len);
+ }
+ }
+ }
+
+ if (skb->len) {
+ skb_queue_head(&sk->sk_receive_queue, skb);
+ break;
+ }
+ kfree_skb(skb);
+
+ } else {
+ /* put message back and return */
+ skb_queue_head(&sk->sk_receive_queue, skb);
+ break;
+ }
+ } while (size);
+
+out:
+ release_sock(sk);
+ return copied ? : err;
+}
+EXPORT_SYMBOL(bt_sock_stream_recvmsg);
+
+static inline unsigned int bt_accept_poll(struct sock *parent)
+{
+ struct list_head *p, *n;
+ struct sock *sk;
+
+ 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 ||
+ (bt_sk(parent)->defer_setup &&
+ sk->sk_state == BT_CONNECT2))
+ return POLLIN | POLLRDNORM;
+ }
+
+ return 0;
+}
+
+unsigned int bt_sock_poll(struct file *file, struct socket *sock, poll_table *wait)
+{
+ struct sock *sk = sock->sk;
+ unsigned int mask = 0;
+
+ BT_DBG("sock %p, sk %p", sock, sk);
+
+ poll_wait(file, sk_sleep(sk), wait);
+
+ if (sk->sk_state == BT_LISTEN)
+ return bt_accept_poll(sk);
+
+ if (sk->sk_err || !skb_queue_empty(&sk->sk_error_queue))
+ mask |= POLLERR;
+
+ if (sk->sk_shutdown & RCV_SHUTDOWN)
+ mask |= POLLRDHUP | POLLIN | POLLRDNORM;
+
+ if (sk->sk_shutdown == SHUTDOWN_MASK)
+ mask |= POLLHUP;
+
+ if (!skb_queue_empty(&sk->sk_receive_queue))
+ mask |= POLLIN | POLLRDNORM;
+
+ if (sk->sk_state == BT_CLOSED)
+ mask |= POLLHUP;
+
+ if (sk->sk_state == BT_CONNECT ||
+ sk->sk_state == BT_CONNECT2 ||
+ sk->sk_state == BT_CONFIG)
+ return mask;
+
+ if (!bt_sk(sk)->suspended && sock_writeable(sk))
+ mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
+ else
+ set_bit(SOCK_ASYNC_NOSPACE, &sk->sk_socket->flags);
+
+ return mask;
+}
+EXPORT_SYMBOL(bt_sock_poll);
+
+int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
+{
+ struct sock *sk = sock->sk;
+ struct sk_buff *skb;
+ long amount;
+ int err;
+
+ BT_DBG("sk %p cmd %x arg %lx", sk, cmd, arg);
+
+ switch (cmd) {
+ case TIOCOUTQ:
+ if (sk->sk_state == BT_LISTEN)
+ return -EINVAL;
+
+ amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk);
+ if (amount < 0)
+ amount = 0;
+ err = put_user(amount, (int __user *) arg);
+ break;
+
+ case TIOCINQ:
+ if (sk->sk_state == BT_LISTEN)
+ return -EINVAL;
+
+ lock_sock(sk);
+ skb = skb_peek(&sk->sk_receive_queue);
+ amount = skb ? skb->len : 0;
+ release_sock(sk);
+ err = put_user(amount, (int __user *) arg);
+ break;
+
+ case SIOCGSTAMP:
+ err = sock_get_timestamp(sk, (struct timeval __user *) arg);
+ break;
+
+ case SIOCGSTAMPNS:
+ err = sock_get_timestampns(sk, (struct timespec __user *) arg);
+ break;
+
+ default:
+ err = -ENOIOCTLCMD;
+ break;
+ }
+
+ return err;
+}
+EXPORT_SYMBOL(bt_sock_ioctl);
+
+int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo)
+{
+ DECLARE_WAITQUEUE(wait, current);
+ int err = 0;
+
+ BT_DBG("sk %p", sk);
+
+ add_wait_queue(sk_sleep(sk), &wait);
+ set_current_state(TASK_INTERRUPTIBLE);
+ while (sk->sk_state != state) {
+ if (!timeo) {
+ err = -EINPROGRESS;
+ break;
+ }
+
+ if (signal_pending(current)) {
+ err = sock_intr_errno(timeo);
+ break;
+ }
+
+ release_sock(sk);
+ timeo = schedule_timeout(timeo);
+ lock_sock(sk);
+ set_current_state(TASK_INTERRUPTIBLE);
+
+ err = sock_error(sk);
+ if (err)
+ break;
+ }
+ __set_current_state(TASK_RUNNING);
+ remove_wait_queue(sk_sleep(sk), &wait);
+ return err;
+}
+EXPORT_SYMBOL(bt_sock_wait_state);
+
+static struct net_proto_family bt_sock_family_ops = {
+ .owner = THIS_MODULE,
+ .family = PF_BLUETOOTH,
+ .create = bt_sock_create,
+};
+
+static int __init bt_init(void)
+{
+ int err;
+
+ BT_INFO("Core ver %s", VERSION);
+
+ err = bt_sysfs_init();
+ if (err < 0)
+ return err;
+
+ err = sock_register(&bt_sock_family_ops);
+ if (err < 0) {
+ bt_sysfs_cleanup();
+ return err;
+ }
+
+ BT_INFO("HCI device and connection manager initialized");
+
+ err = hci_sock_init();
+ if (err < 0)
+ goto error;
+
+ err = l2cap_init();
+ if (err < 0)
+ goto sock_err;
+
+ err = sco_init();
+ if (err < 0) {
+ l2cap_exit();
+ goto sock_err;
+ }
+
+ return 0;
+
+sock_err:
+ hci_sock_cleanup();
+
+error:
+ sock_unregister(PF_BLUETOOTH);
+ bt_sysfs_cleanup();
+
+ return err;
+}
+
+static void __exit bt_exit(void)
+{
+
+ sco_exit();
+
+ l2cap_exit();
+
+ hci_sock_cleanup();
+
+ sock_unregister(PF_BLUETOOTH);
+
+ bt_sysfs_cleanup();
+}
+
+subsys_initcall(bt_init);
+module_exit(bt_exit);
+
+MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
+MODULE_DESCRIPTION("Bluetooth Core ver " VERSION);
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_NETPROTO(PF_BLUETOOTH);