1 /* 2 BlueZ - Bluetooth protocol stack for Linux 3 Copyright (C) 2000-2001 Qualcomm Incorporated 4 5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License version 2 as 9 published by the Free Software Foundation; 10 11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. 14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY 15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 22 SOFTWARE IS DISCLAIMED. 23 */ 24 25 /* Bluetooth address family and sockets. */ 26 27 #include <linux/module.h> 28 #include <linux/debugfs.h> 29 #include <linux/stringify.h> 30 #include <linux/sched/signal.h> 31 32 #include <asm/ioctls.h> 33 34 #include <net/bluetooth/bluetooth.h> 35 #include <linux/proc_fs.h> 36 37 #include "leds.h" 38 #include "selftest.h" 39 40 /* Bluetooth sockets */ 41 #define BT_MAX_PROTO 8 42 static const struct net_proto_family *bt_proto[BT_MAX_PROTO]; 43 static DEFINE_RWLOCK(bt_proto_lock); 44 45 static struct lock_class_key bt_lock_key[BT_MAX_PROTO]; 46 static const char *const bt_key_strings[BT_MAX_PROTO] = { 47 "sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP", 48 "sk_lock-AF_BLUETOOTH-BTPROTO_HCI", 49 "sk_lock-AF_BLUETOOTH-BTPROTO_SCO", 50 "sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM", 51 "sk_lock-AF_BLUETOOTH-BTPROTO_BNEP", 52 "sk_lock-AF_BLUETOOTH-BTPROTO_CMTP", 53 "sk_lock-AF_BLUETOOTH-BTPROTO_HIDP", 54 "sk_lock-AF_BLUETOOTH-BTPROTO_AVDTP", 55 }; 56 57 static struct lock_class_key bt_slock_key[BT_MAX_PROTO]; 58 static const char *const bt_slock_key_strings[BT_MAX_PROTO] = { 59 "slock-AF_BLUETOOTH-BTPROTO_L2CAP", 60 "slock-AF_BLUETOOTH-BTPROTO_HCI", 61 "slock-AF_BLUETOOTH-BTPROTO_SCO", 62 "slock-AF_BLUETOOTH-BTPROTO_RFCOMM", 63 "slock-AF_BLUETOOTH-BTPROTO_BNEP", 64 "slock-AF_BLUETOOTH-BTPROTO_CMTP", 65 "slock-AF_BLUETOOTH-BTPROTO_HIDP", 66 "slock-AF_BLUETOOTH-BTPROTO_AVDTP", 67 }; 68 69 void bt_sock_reclassify_lock(struct sock *sk, int proto) 70 { 71 BUG_ON(!sk); 72 BUG_ON(!sock_allow_reclassification(sk)); 73 74 sock_lock_init_class_and_name(sk, 75 bt_slock_key_strings[proto], &bt_slock_key[proto], 76 bt_key_strings[proto], &bt_lock_key[proto]); 77 } 78 EXPORT_SYMBOL(bt_sock_reclassify_lock); 79 80 int bt_sock_register(int proto, const struct net_proto_family *ops) 81 { 82 int err = 0; 83 84 if (proto < 0 || proto >= BT_MAX_PROTO) 85 return -EINVAL; 86 87 write_lock(&bt_proto_lock); 88 89 if (bt_proto[proto]) 90 err = -EEXIST; 91 else 92 bt_proto[proto] = ops; 93 94 write_unlock(&bt_proto_lock); 95 96 return err; 97 } 98 EXPORT_SYMBOL(bt_sock_register); 99 100 void bt_sock_unregister(int proto) 101 { 102 if (proto < 0 || proto >= BT_MAX_PROTO) 103 return; 104 105 write_lock(&bt_proto_lock); 106 bt_proto[proto] = NULL; 107 write_unlock(&bt_proto_lock); 108 } 109 EXPORT_SYMBOL(bt_sock_unregister); 110 111 static int bt_sock_create(struct net *net, struct socket *sock, int proto, 112 int kern) 113 { 114 int err; 115 116 if (net != &init_net) 117 return -EAFNOSUPPORT; 118 119 if (proto < 0 || proto >= BT_MAX_PROTO) 120 return -EINVAL; 121 122 if (!bt_proto[proto]) 123 request_module("bt-proto-%d", proto); 124 125 err = -EPROTONOSUPPORT; 126 127 read_lock(&bt_proto_lock); 128 129 if (bt_proto[proto] && try_module_get(bt_proto[proto]->owner)) { 130 err = bt_proto[proto]->create(net, sock, proto, kern); 131 if (!err) 132 bt_sock_reclassify_lock(sock->sk, proto); 133 module_put(bt_proto[proto]->owner); 134 } 135 136 read_unlock(&bt_proto_lock); 137 138 return err; 139 } 140 141 void bt_sock_link(struct bt_sock_list *l, struct sock *sk) 142 { 143 write_lock(&l->lock); 144 sk_add_node(sk, &l->head); 145 write_unlock(&l->lock); 146 } 147 EXPORT_SYMBOL(bt_sock_link); 148 149 void bt_sock_unlink(struct bt_sock_list *l, struct sock *sk) 150 { 151 write_lock(&l->lock); 152 sk_del_node_init(sk); 153 write_unlock(&l->lock); 154 } 155 EXPORT_SYMBOL(bt_sock_unlink); 156 157 void bt_accept_enqueue(struct sock *parent, struct sock *sk, bool bh) 158 { 159 BT_DBG("parent %p, sk %p", parent, sk); 160 161 sock_hold(sk); 162 163 if (bh) 164 bh_lock_sock_nested(sk); 165 else 166 lock_sock_nested(sk, SINGLE_DEPTH_NESTING); 167 168 list_add_tail(&bt_sk(sk)->accept_q, &bt_sk(parent)->accept_q); 169 bt_sk(sk)->parent = parent; 170 171 if (bh) 172 bh_unlock_sock(sk); 173 else 174 release_sock(sk); 175 176 parent->sk_ack_backlog++; 177 } 178 EXPORT_SYMBOL(bt_accept_enqueue); 179 180 /* Calling function must hold the sk lock. 181 * bt_sk(sk)->parent must be non-NULL meaning sk is in the parent list. 182 */ 183 void bt_accept_unlink(struct sock *sk) 184 { 185 BT_DBG("sk %p state %d", sk, sk->sk_state); 186 187 list_del_init(&bt_sk(sk)->accept_q); 188 bt_sk(sk)->parent->sk_ack_backlog--; 189 bt_sk(sk)->parent = NULL; 190 sock_put(sk); 191 } 192 EXPORT_SYMBOL(bt_accept_unlink); 193 194 struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock) 195 { 196 struct bt_sock *s, *n; 197 struct sock *sk; 198 199 BT_DBG("parent %p", parent); 200 201 restart: 202 list_for_each_entry_safe(s, n, &bt_sk(parent)->accept_q, accept_q) { 203 sk = (struct sock *)s; 204 205 /* Prevent early freeing of sk due to unlink and sock_kill */ 206 sock_hold(sk); 207 lock_sock(sk); 208 209 /* Check sk has not already been unlinked via 210 * bt_accept_unlink() due to serialisation caused by sk locking 211 */ 212 if (!bt_sk(sk)->parent) { 213 BT_DBG("sk %p, already unlinked", sk); 214 release_sock(sk); 215 sock_put(sk); 216 217 /* Restart the loop as sk is no longer in the list 218 * and also avoid a potential infinite loop because 219 * list_for_each_entry_safe() is not thread safe. 220 */ 221 goto restart; 222 } 223 224 /* sk is safely in the parent list so reduce reference count */ 225 sock_put(sk); 226 227 /* FIXME: Is this check still needed */ 228 if (sk->sk_state == BT_CLOSED) { 229 bt_accept_unlink(sk); 230 release_sock(sk); 231 continue; 232 } 233 234 if (sk->sk_state == BT_CONNECTED || !newsock || 235 test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags)) { 236 bt_accept_unlink(sk); 237 if (newsock) 238 sock_graft(sk, newsock); 239 240 release_sock(sk); 241 return sk; 242 } 243 244 release_sock(sk); 245 } 246 247 return NULL; 248 } 249 EXPORT_SYMBOL(bt_accept_dequeue); 250 251 int bt_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, 252 int flags) 253 { 254 int noblock = flags & MSG_DONTWAIT; 255 struct sock *sk = sock->sk; 256 struct sk_buff *skb; 257 size_t copied; 258 size_t skblen; 259 int err; 260 261 BT_DBG("sock %p sk %p len %zu", sock, sk, len); 262 263 if (flags & MSG_OOB) 264 return -EOPNOTSUPP; 265 266 skb = skb_recv_datagram(sk, flags, noblock, &err); 267 if (!skb) { 268 if (sk->sk_shutdown & RCV_SHUTDOWN) 269 return 0; 270 271 return err; 272 } 273 274 skblen = skb->len; 275 copied = skb->len; 276 if (len < copied) { 277 msg->msg_flags |= MSG_TRUNC; 278 copied = len; 279 } 280 281 skb_reset_transport_header(skb); 282 err = skb_copy_datagram_msg(skb, 0, msg, copied); 283 if (err == 0) { 284 sock_recv_ts_and_drops(msg, sk, skb); 285 286 if (msg->msg_name && bt_sk(sk)->skb_msg_name) 287 bt_sk(sk)->skb_msg_name(skb, msg->msg_name, 288 &msg->msg_namelen); 289 } 290 291 skb_free_datagram(sk, skb); 292 293 if (flags & MSG_TRUNC) 294 copied = skblen; 295 296 return err ? : copied; 297 } 298 EXPORT_SYMBOL(bt_sock_recvmsg); 299 300 static long bt_sock_data_wait(struct sock *sk, long timeo) 301 { 302 DECLARE_WAITQUEUE(wait, current); 303 304 add_wait_queue(sk_sleep(sk), &wait); 305 for (;;) { 306 set_current_state(TASK_INTERRUPTIBLE); 307 308 if (!skb_queue_empty(&sk->sk_receive_queue)) 309 break; 310 311 if (sk->sk_err || (sk->sk_shutdown & RCV_SHUTDOWN)) 312 break; 313 314 if (signal_pending(current) || !timeo) 315 break; 316 317 sk_set_bit(SOCKWQ_ASYNC_WAITDATA, sk); 318 release_sock(sk); 319 timeo = schedule_timeout(timeo); 320 lock_sock(sk); 321 sk_clear_bit(SOCKWQ_ASYNC_WAITDATA, sk); 322 } 323 324 __set_current_state(TASK_RUNNING); 325 remove_wait_queue(sk_sleep(sk), &wait); 326 return timeo; 327 } 328 329 int bt_sock_stream_recvmsg(struct socket *sock, struct msghdr *msg, 330 size_t size, int flags) 331 { 332 struct sock *sk = sock->sk; 333 int err = 0; 334 size_t target, copied = 0; 335 long timeo; 336 337 if (flags & MSG_OOB) 338 return -EOPNOTSUPP; 339 340 BT_DBG("sk %p size %zu", sk, size); 341 342 lock_sock(sk); 343 344 target = sock_rcvlowat(sk, flags & MSG_WAITALL, size); 345 timeo = sock_rcvtimeo(sk, flags & MSG_DONTWAIT); 346 347 do { 348 struct sk_buff *skb; 349 int chunk; 350 351 skb = skb_dequeue(&sk->sk_receive_queue); 352 if (!skb) { 353 if (copied >= target) 354 break; 355 356 err = sock_error(sk); 357 if (err) 358 break; 359 if (sk->sk_shutdown & RCV_SHUTDOWN) 360 break; 361 362 err = -EAGAIN; 363 if (!timeo) 364 break; 365 366 timeo = bt_sock_data_wait(sk, timeo); 367 368 if (signal_pending(current)) { 369 err = sock_intr_errno(timeo); 370 goto out; 371 } 372 continue; 373 } 374 375 chunk = min_t(unsigned int, skb->len, size); 376 if (skb_copy_datagram_msg(skb, 0, msg, chunk)) { 377 skb_queue_head(&sk->sk_receive_queue, skb); 378 if (!copied) 379 copied = -EFAULT; 380 break; 381 } 382 copied += chunk; 383 size -= chunk; 384 385 sock_recv_ts_and_drops(msg, sk, skb); 386 387 if (!(flags & MSG_PEEK)) { 388 int skb_len = skb_headlen(skb); 389 390 if (chunk <= skb_len) { 391 __skb_pull(skb, chunk); 392 } else { 393 struct sk_buff *frag; 394 395 __skb_pull(skb, skb_len); 396 chunk -= skb_len; 397 398 skb_walk_frags(skb, frag) { 399 if (chunk <= frag->len) { 400 /* Pulling partial data */ 401 skb->len -= chunk; 402 skb->data_len -= chunk; 403 __skb_pull(frag, chunk); 404 break; 405 } else if (frag->len) { 406 /* Pulling all frag data */ 407 chunk -= frag->len; 408 skb->len -= frag->len; 409 skb->data_len -= frag->len; 410 __skb_pull(frag, frag->len); 411 } 412 } 413 } 414 415 if (skb->len) { 416 skb_queue_head(&sk->sk_receive_queue, skb); 417 break; 418 } 419 kfree_skb(skb); 420 421 } else { 422 /* put message back and return */ 423 skb_queue_head(&sk->sk_receive_queue, skb); 424 break; 425 } 426 } while (size); 427 428 out: 429 release_sock(sk); 430 return copied ? : err; 431 } 432 EXPORT_SYMBOL(bt_sock_stream_recvmsg); 433 434 static inline __poll_t bt_accept_poll(struct sock *parent) 435 { 436 struct bt_sock *s, *n; 437 struct sock *sk; 438 439 list_for_each_entry_safe(s, n, &bt_sk(parent)->accept_q, accept_q) { 440 sk = (struct sock *)s; 441 if (sk->sk_state == BT_CONNECTED || 442 (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags) && 443 sk->sk_state == BT_CONNECT2)) 444 return EPOLLIN | EPOLLRDNORM; 445 } 446 447 return 0; 448 } 449 450 __poll_t bt_sock_poll(struct file *file, struct socket *sock, 451 poll_table *wait) 452 { 453 struct sock *sk = sock->sk; 454 __poll_t mask = 0; 455 456 BT_DBG("sock %p, sk %p", sock, sk); 457 458 poll_wait(file, sk_sleep(sk), wait); 459 460 if (sk->sk_state == BT_LISTEN) 461 return bt_accept_poll(sk); 462 463 if (sk->sk_err || !skb_queue_empty(&sk->sk_error_queue)) 464 mask |= EPOLLERR | 465 (sock_flag(sk, SOCK_SELECT_ERR_QUEUE) ? EPOLLPRI : 0); 466 467 if (sk->sk_shutdown & RCV_SHUTDOWN) 468 mask |= EPOLLRDHUP | EPOLLIN | EPOLLRDNORM; 469 470 if (sk->sk_shutdown == SHUTDOWN_MASK) 471 mask |= EPOLLHUP; 472 473 if (!skb_queue_empty(&sk->sk_receive_queue)) 474 mask |= EPOLLIN | EPOLLRDNORM; 475 476 if (sk->sk_state == BT_CLOSED) 477 mask |= EPOLLHUP; 478 479 if (sk->sk_state == BT_CONNECT || 480 sk->sk_state == BT_CONNECT2 || 481 sk->sk_state == BT_CONFIG) 482 return mask; 483 484 if (!test_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags) && sock_writeable(sk)) 485 mask |= EPOLLOUT | EPOLLWRNORM | EPOLLWRBAND; 486 else 487 sk_set_bit(SOCKWQ_ASYNC_NOSPACE, sk); 488 489 return mask; 490 } 491 EXPORT_SYMBOL(bt_sock_poll); 492 493 int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) 494 { 495 struct sock *sk = sock->sk; 496 struct sk_buff *skb; 497 long amount; 498 int err; 499 500 BT_DBG("sk %p cmd %x arg %lx", sk, cmd, arg); 501 502 switch (cmd) { 503 case TIOCOUTQ: 504 if (sk->sk_state == BT_LISTEN) 505 return -EINVAL; 506 507 amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk); 508 if (amount < 0) 509 amount = 0; 510 err = put_user(amount, (int __user *) arg); 511 break; 512 513 case TIOCINQ: 514 if (sk->sk_state == BT_LISTEN) 515 return -EINVAL; 516 517 lock_sock(sk); 518 skb = skb_peek(&sk->sk_receive_queue); 519 amount = skb ? skb->len : 0; 520 release_sock(sk); 521 err = put_user(amount, (int __user *) arg); 522 break; 523 524 default: 525 err = -ENOIOCTLCMD; 526 break; 527 } 528 529 return err; 530 } 531 EXPORT_SYMBOL(bt_sock_ioctl); 532 533 /* This function expects the sk lock to be held when called */ 534 int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo) 535 { 536 DECLARE_WAITQUEUE(wait, current); 537 int err = 0; 538 539 BT_DBG("sk %p", sk); 540 541 add_wait_queue(sk_sleep(sk), &wait); 542 set_current_state(TASK_INTERRUPTIBLE); 543 while (sk->sk_state != state) { 544 if (!timeo) { 545 err = -EINPROGRESS; 546 break; 547 } 548 549 if (signal_pending(current)) { 550 err = sock_intr_errno(timeo); 551 break; 552 } 553 554 release_sock(sk); 555 timeo = schedule_timeout(timeo); 556 lock_sock(sk); 557 set_current_state(TASK_INTERRUPTIBLE); 558 559 err = sock_error(sk); 560 if (err) 561 break; 562 } 563 __set_current_state(TASK_RUNNING); 564 remove_wait_queue(sk_sleep(sk), &wait); 565 return err; 566 } 567 EXPORT_SYMBOL(bt_sock_wait_state); 568 569 /* This function expects the sk lock to be held when called */ 570 int bt_sock_wait_ready(struct sock *sk, unsigned long flags) 571 { 572 DECLARE_WAITQUEUE(wait, current); 573 unsigned long timeo; 574 int err = 0; 575 576 BT_DBG("sk %p", sk); 577 578 timeo = sock_sndtimeo(sk, flags & O_NONBLOCK); 579 580 add_wait_queue(sk_sleep(sk), &wait); 581 set_current_state(TASK_INTERRUPTIBLE); 582 while (test_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags)) { 583 if (!timeo) { 584 err = -EAGAIN; 585 break; 586 } 587 588 if (signal_pending(current)) { 589 err = sock_intr_errno(timeo); 590 break; 591 } 592 593 release_sock(sk); 594 timeo = schedule_timeout(timeo); 595 lock_sock(sk); 596 set_current_state(TASK_INTERRUPTIBLE); 597 598 err = sock_error(sk); 599 if (err) 600 break; 601 } 602 __set_current_state(TASK_RUNNING); 603 remove_wait_queue(sk_sleep(sk), &wait); 604 605 return err; 606 } 607 EXPORT_SYMBOL(bt_sock_wait_ready); 608 609 #ifdef CONFIG_PROC_FS 610 static void *bt_seq_start(struct seq_file *seq, loff_t *pos) 611 __acquires(seq->private->l->lock) 612 { 613 struct bt_sock_list *l = PDE_DATA(file_inode(seq->file)); 614 615 read_lock(&l->lock); 616 return seq_hlist_start_head(&l->head, *pos); 617 } 618 619 static void *bt_seq_next(struct seq_file *seq, void *v, loff_t *pos) 620 { 621 struct bt_sock_list *l = PDE_DATA(file_inode(seq->file)); 622 623 return seq_hlist_next(v, &l->head, pos); 624 } 625 626 static void bt_seq_stop(struct seq_file *seq, void *v) 627 __releases(seq->private->l->lock) 628 { 629 struct bt_sock_list *l = PDE_DATA(file_inode(seq->file)); 630 631 read_unlock(&l->lock); 632 } 633 634 static int bt_seq_show(struct seq_file *seq, void *v) 635 { 636 struct bt_sock_list *l = PDE_DATA(file_inode(seq->file)); 637 638 if (v == SEQ_START_TOKEN) { 639 seq_puts(seq ,"sk RefCnt Rmem Wmem User Inode Parent"); 640 641 if (l->custom_seq_show) { 642 seq_putc(seq, ' '); 643 l->custom_seq_show(seq, v); 644 } 645 646 seq_putc(seq, '\n'); 647 } else { 648 struct sock *sk = sk_entry(v); 649 struct bt_sock *bt = bt_sk(sk); 650 651 seq_printf(seq, 652 "%pK %-6d %-6u %-6u %-6u %-6lu %-6lu", 653 sk, 654 refcount_read(&sk->sk_refcnt), 655 sk_rmem_alloc_get(sk), 656 sk_wmem_alloc_get(sk), 657 from_kuid(seq_user_ns(seq), sock_i_uid(sk)), 658 sock_i_ino(sk), 659 bt->parent? sock_i_ino(bt->parent): 0LU); 660 661 if (l->custom_seq_show) { 662 seq_putc(seq, ' '); 663 l->custom_seq_show(seq, v); 664 } 665 666 seq_putc(seq, '\n'); 667 } 668 return 0; 669 } 670 671 static const struct seq_operations bt_seq_ops = { 672 .start = bt_seq_start, 673 .next = bt_seq_next, 674 .stop = bt_seq_stop, 675 .show = bt_seq_show, 676 }; 677 678 int bt_procfs_init(struct net *net, const char *name, 679 struct bt_sock_list *sk_list, 680 int (* seq_show)(struct seq_file *, void *)) 681 { 682 sk_list->custom_seq_show = seq_show; 683 684 if (!proc_create_seq_data(name, 0, net->proc_net, &bt_seq_ops, sk_list)) 685 return -ENOMEM; 686 return 0; 687 } 688 689 void bt_procfs_cleanup(struct net *net, const char *name) 690 { 691 remove_proc_entry(name, net->proc_net); 692 } 693 #else 694 int bt_procfs_init(struct net *net, const char *name, 695 struct bt_sock_list *sk_list, 696 int (* seq_show)(struct seq_file *, void *)) 697 { 698 return 0; 699 } 700 701 void bt_procfs_cleanup(struct net *net, const char *name) 702 { 703 } 704 #endif 705 EXPORT_SYMBOL(bt_procfs_init); 706 EXPORT_SYMBOL(bt_procfs_cleanup); 707 708 static const struct net_proto_family bt_sock_family_ops = { 709 .owner = THIS_MODULE, 710 .family = PF_BLUETOOTH, 711 .create = bt_sock_create, 712 }; 713 714 struct dentry *bt_debugfs; 715 EXPORT_SYMBOL_GPL(bt_debugfs); 716 717 #define VERSION __stringify(BT_SUBSYS_VERSION) "." \ 718 __stringify(BT_SUBSYS_REVISION) 719 720 static int __init bt_init(void) 721 { 722 int err; 723 724 sock_skb_cb_check_size(sizeof(struct bt_skb_cb)); 725 726 BT_INFO("Core ver %s", VERSION); 727 728 err = bt_selftest(); 729 if (err < 0) 730 return err; 731 732 bt_debugfs = debugfs_create_dir("bluetooth", NULL); 733 734 bt_leds_init(); 735 736 err = bt_sysfs_init(); 737 if (err < 0) 738 return err; 739 740 err = sock_register(&bt_sock_family_ops); 741 if (err) 742 goto cleanup_sysfs; 743 744 BT_INFO("HCI device and connection manager initialized"); 745 746 err = hci_sock_init(); 747 if (err) 748 goto unregister_socket; 749 750 err = l2cap_init(); 751 if (err) 752 goto cleanup_socket; 753 754 err = sco_init(); 755 if (err) 756 goto cleanup_cap; 757 758 err = mgmt_init(); 759 if (err) 760 goto cleanup_sco; 761 762 return 0; 763 764 cleanup_sco: 765 sco_exit(); 766 cleanup_cap: 767 l2cap_exit(); 768 cleanup_socket: 769 hci_sock_cleanup(); 770 unregister_socket: 771 sock_unregister(PF_BLUETOOTH); 772 cleanup_sysfs: 773 bt_sysfs_cleanup(); 774 return err; 775 } 776 777 static void __exit bt_exit(void) 778 { 779 mgmt_exit(); 780 781 sco_exit(); 782 783 l2cap_exit(); 784 785 hci_sock_cleanup(); 786 787 sock_unregister(PF_BLUETOOTH); 788 789 bt_sysfs_cleanup(); 790 791 bt_leds_cleanup(); 792 793 debugfs_remove_recursive(bt_debugfs); 794 } 795 796 subsys_initcall(bt_init); 797 module_exit(bt_exit); 798 799 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 800 MODULE_DESCRIPTION("Bluetooth Core ver " VERSION); 801 MODULE_VERSION(VERSION); 802 MODULE_LICENSE("GPL"); 803 MODULE_ALIAS_NETPROTO(PF_BLUETOOTH); 804