YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 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 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 19 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 20 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
| 21 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | SOFTWARE IS DISCLAIMED. |
| 23 | */ |
| 24 | |
| 25 | /* Bluetooth address family and sockets. */ |
| 26 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include <linux/module.h> |
Marcel Holtmann | ffcecac | 2013-10-17 17:24:18 -0700 | [diff] [blame] | 28 | #include <linux/debugfs.h> |
Marcel Holtmann | 9e8305b | 2016-08-30 05:00:35 +0200 | [diff] [blame] | 29 | #include <linux/stringify.h> |
Marcel Holtmann | 3241ad8 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 30 | #include <asm/ioctls.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | |
| 32 | #include <net/bluetooth/bluetooth.h> |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 33 | #include <linux/proc_fs.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | |
Marcel Holtmann | e64c97b | 2016-07-21 14:12:41 +0200 | [diff] [blame] | 35 | #include "leds.h" |
Marcel Holtmann | ee48529 | 2014-12-29 20:48:35 -0800 | [diff] [blame] | 36 | #include "selftest.h" |
| 37 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | /* Bluetooth sockets */ |
| 39 | #define BT_MAX_PROTO 8 |
Stephen Hemminger | ec1b4cf | 2009-10-05 05:58:39 +0000 | [diff] [blame] | 40 | static const struct net_proto_family *bt_proto[BT_MAX_PROTO]; |
Marcel Holtmann | db7aa1c | 2008-11-30 12:17:19 +0100 | [diff] [blame] | 41 | static DEFINE_RWLOCK(bt_proto_lock); |
Dave Young | 68845cb | 2008-04-01 23:58:35 -0700 | [diff] [blame] | 42 | |
Dave Young | 68845cb | 2008-04-01 23:58:35 -0700 | [diff] [blame] | 43 | static struct lock_class_key bt_lock_key[BT_MAX_PROTO]; |
Jan Engelhardt | 36cbd3d | 2009-08-05 10:42:58 -0700 | [diff] [blame] | 44 | static const char *const bt_key_strings[BT_MAX_PROTO] = { |
Dave Young | 68845cb | 2008-04-01 23:58:35 -0700 | [diff] [blame] | 45 | "sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP", |
| 46 | "sk_lock-AF_BLUETOOTH-BTPROTO_HCI", |
| 47 | "sk_lock-AF_BLUETOOTH-BTPROTO_SCO", |
| 48 | "sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM", |
| 49 | "sk_lock-AF_BLUETOOTH-BTPROTO_BNEP", |
| 50 | "sk_lock-AF_BLUETOOTH-BTPROTO_CMTP", |
| 51 | "sk_lock-AF_BLUETOOTH-BTPROTO_HIDP", |
| 52 | "sk_lock-AF_BLUETOOTH-BTPROTO_AVDTP", |
| 53 | }; |
| 54 | |
Marcel Holtmann | db7aa1c | 2008-11-30 12:17:19 +0100 | [diff] [blame] | 55 | static struct lock_class_key bt_slock_key[BT_MAX_PROTO]; |
Jan Engelhardt | 36cbd3d | 2009-08-05 10:42:58 -0700 | [diff] [blame] | 56 | static const char *const bt_slock_key_strings[BT_MAX_PROTO] = { |
Dave Young | 68845cb | 2008-04-01 23:58:35 -0700 | [diff] [blame] | 57 | "slock-AF_BLUETOOTH-BTPROTO_L2CAP", |
| 58 | "slock-AF_BLUETOOTH-BTPROTO_HCI", |
| 59 | "slock-AF_BLUETOOTH-BTPROTO_SCO", |
| 60 | "slock-AF_BLUETOOTH-BTPROTO_RFCOMM", |
| 61 | "slock-AF_BLUETOOTH-BTPROTO_BNEP", |
| 62 | "slock-AF_BLUETOOTH-BTPROTO_CMTP", |
| 63 | "slock-AF_BLUETOOTH-BTPROTO_HIDP", |
| 64 | "slock-AF_BLUETOOTH-BTPROTO_AVDTP", |
| 65 | }; |
Marcel Holtmann | db7aa1c | 2008-11-30 12:17:19 +0100 | [diff] [blame] | 66 | |
Octavian Purdila | b5a30dd | 2012-01-22 00:28:34 +0200 | [diff] [blame] | 67 | void bt_sock_reclassify_lock(struct sock *sk, int proto) |
Marcel Holtmann | db7aa1c | 2008-11-30 12:17:19 +0100 | [diff] [blame] | 68 | { |
Octavian Purdila | b5a30dd | 2012-01-22 00:28:34 +0200 | [diff] [blame] | 69 | BUG_ON(!sk); |
Hannes Frederic Sowa | fafc4e1 | 2016-04-08 15:11:27 +0200 | [diff] [blame] | 70 | BUG_ON(!sock_allow_reclassification(sk)); |
Marcel Holtmann | db7aa1c | 2008-11-30 12:17:19 +0100 | [diff] [blame] | 71 | |
| 72 | sock_lock_init_class_and_name(sk, |
| 73 | bt_slock_key_strings[proto], &bt_slock_key[proto], |
| 74 | bt_key_strings[proto], &bt_lock_key[proto]); |
| 75 | } |
Octavian Purdila | b5a30dd | 2012-01-22 00:28:34 +0200 | [diff] [blame] | 76 | EXPORT_SYMBOL(bt_sock_reclassify_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | |
Stephen Hemminger | ec1b4cf | 2009-10-05 05:58:39 +0000 | [diff] [blame] | 78 | int bt_sock_register(int proto, const struct net_proto_family *ops) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | { |
Marcel Holtmann | 74da626 | 2006-10-15 17:31:14 +0200 | [diff] [blame] | 80 | int err = 0; |
| 81 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | if (proto < 0 || proto >= BT_MAX_PROTO) |
| 83 | return -EINVAL; |
| 84 | |
Marcel Holtmann | 74da626 | 2006-10-15 17:31:14 +0200 | [diff] [blame] | 85 | write_lock(&bt_proto_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
Marcel Holtmann | 74da626 | 2006-10-15 17:31:14 +0200 | [diff] [blame] | 87 | if (bt_proto[proto]) |
| 88 | err = -EEXIST; |
| 89 | else |
| 90 | bt_proto[proto] = ops; |
| 91 | |
| 92 | write_unlock(&bt_proto_lock); |
| 93 | |
| 94 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | } |
| 96 | EXPORT_SYMBOL(bt_sock_register); |
| 97 | |
David Herrmann | be9f97f | 2013-02-24 19:36:52 +0100 | [diff] [blame] | 98 | void bt_sock_unregister(int proto) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | { |
| 100 | if (proto < 0 || proto >= BT_MAX_PROTO) |
David Herrmann | be9f97f | 2013-02-24 19:36:52 +0100 | [diff] [blame] | 101 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | |
Marcel Holtmann | 74da626 | 2006-10-15 17:31:14 +0200 | [diff] [blame] | 103 | write_lock(&bt_proto_lock); |
David Herrmann | be9f97f | 2013-02-24 19:36:52 +0100 | [diff] [blame] | 104 | bt_proto[proto] = NULL; |
Marcel Holtmann | 74da626 | 2006-10-15 17:31:14 +0200 | [diff] [blame] | 105 | write_unlock(&bt_proto_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | } |
| 107 | EXPORT_SYMBOL(bt_sock_unregister); |
| 108 | |
Eric Paris | 3f378b6 | 2009-11-05 22:18:14 -0800 | [diff] [blame] | 109 | static int bt_sock_create(struct net *net, struct socket *sock, int proto, |
| 110 | int kern) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | { |
Marcel Holtmann | 74da626 | 2006-10-15 17:31:14 +0200 | [diff] [blame] | 112 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | |
Eric W. Biederman | 1b8d7ae | 2007-10-08 23:24:22 -0700 | [diff] [blame] | 114 | if (net != &init_net) |
| 115 | return -EAFNOSUPPORT; |
| 116 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | if (proto < 0 || proto >= BT_MAX_PROTO) |
| 118 | return -EINVAL; |
| 119 | |
Johannes Berg | 95a5afc | 2008-10-16 15:24:51 -0700 | [diff] [blame] | 120 | if (!bt_proto[proto]) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | request_module("bt-proto-%d", proto); |
Marcel Holtmann | 74da626 | 2006-10-15 17:31:14 +0200 | [diff] [blame] | 122 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | err = -EPROTONOSUPPORT; |
Marcel Holtmann | 74da626 | 2006-10-15 17:31:14 +0200 | [diff] [blame] | 124 | |
| 125 | read_lock(&bt_proto_lock); |
| 126 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | if (bt_proto[proto] && try_module_get(bt_proto[proto]->owner)) { |
Eric Paris | 3f378b6 | 2009-11-05 22:18:14 -0800 | [diff] [blame] | 128 | err = bt_proto[proto]->create(net, sock, proto, kern); |
Octavian Purdila | b5a30dd | 2012-01-22 00:28:34 +0200 | [diff] [blame] | 129 | if (!err) |
| 130 | bt_sock_reclassify_lock(sock->sk, proto); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | module_put(bt_proto[proto]->owner); |
| 132 | } |
Marcel Holtmann | 74da626 | 2006-10-15 17:31:14 +0200 | [diff] [blame] | 133 | |
| 134 | read_unlock(&bt_proto_lock); |
| 135 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 136 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | } |
| 138 | |
| 139 | void bt_sock_link(struct bt_sock_list *l, struct sock *sk) |
| 140 | { |
Gustavo F. Padovan | 94f5bfb | 2011-12-27 15:28:48 -0200 | [diff] [blame] | 141 | write_lock(&l->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | sk_add_node(sk, &l->head); |
Gustavo F. Padovan | 94f5bfb | 2011-12-27 15:28:48 -0200 | [diff] [blame] | 143 | write_unlock(&l->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | } |
| 145 | EXPORT_SYMBOL(bt_sock_link); |
| 146 | |
| 147 | void bt_sock_unlink(struct bt_sock_list *l, struct sock *sk) |
| 148 | { |
Gustavo F. Padovan | 94f5bfb | 2011-12-27 15:28:48 -0200 | [diff] [blame] | 149 | write_lock(&l->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | sk_del_node_init(sk); |
Gustavo F. Padovan | 94f5bfb | 2011-12-27 15:28:48 -0200 | [diff] [blame] | 151 | write_unlock(&l->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | } |
| 153 | EXPORT_SYMBOL(bt_sock_unlink); |
| 154 | |
| 155 | void bt_accept_enqueue(struct sock *parent, struct sock *sk) |
| 156 | { |
| 157 | BT_DBG("parent %p, sk %p", parent, sk); |
| 158 | |
| 159 | sock_hold(sk); |
| 160 | list_add_tail(&bt_sk(sk)->accept_q, &bt_sk(parent)->accept_q); |
| 161 | bt_sk(sk)->parent = parent; |
| 162 | parent->sk_ack_backlog++; |
| 163 | } |
| 164 | EXPORT_SYMBOL(bt_accept_enqueue); |
| 165 | |
Dean Jenkins | f3fa28a | 2017-03-10 11:34:46 +0000 | [diff] [blame^] | 166 | /* Calling function must hold the sk lock. |
| 167 | * bt_sk(sk)->parent must be non-NULL meaning sk is in the parent list. |
| 168 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | void bt_accept_unlink(struct sock *sk) |
| 170 | { |
| 171 | BT_DBG("sk %p state %d", sk, sk->sk_state); |
| 172 | |
| 173 | list_del_init(&bt_sk(sk)->accept_q); |
| 174 | bt_sk(sk)->parent->sk_ack_backlog--; |
| 175 | bt_sk(sk)->parent = NULL; |
| 176 | sock_put(sk); |
| 177 | } |
| 178 | EXPORT_SYMBOL(bt_accept_unlink); |
| 179 | |
| 180 | struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock) |
| 181 | { |
Geliang Tang | 7eb7404 | 2015-12-18 23:33:25 +0800 | [diff] [blame] | 182 | struct bt_sock *s, *n; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | struct sock *sk; |
| 184 | |
| 185 | BT_DBG("parent %p", parent); |
| 186 | |
Dean Jenkins | f3fa28a | 2017-03-10 11:34:46 +0000 | [diff] [blame^] | 187 | restart: |
Geliang Tang | 7eb7404 | 2015-12-18 23:33:25 +0800 | [diff] [blame] | 188 | list_for_each_entry_safe(s, n, &bt_sk(parent)->accept_q, accept_q) { |
| 189 | sk = (struct sock *)s; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | |
Dean Jenkins | f3fa28a | 2017-03-10 11:34:46 +0000 | [diff] [blame^] | 191 | /* Prevent early freeing of sk due to unlink and sock_kill */ |
| 192 | sock_hold(sk); |
Gustavo F. Padovan | 8a154a8 | 2011-12-20 17:15:56 -0200 | [diff] [blame] | 193 | lock_sock(sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | |
Dean Jenkins | f3fa28a | 2017-03-10 11:34:46 +0000 | [diff] [blame^] | 195 | /* Check sk has not already been unlinked via |
| 196 | * bt_accept_unlink() due to serialisation caused by sk locking |
| 197 | */ |
| 198 | if (!bt_sk(sk)->parent) { |
| 199 | BT_DBG("sk %p, already unlinked", sk); |
| 200 | release_sock(sk); |
| 201 | sock_put(sk); |
| 202 | |
| 203 | /* Restart the loop as sk is no longer in the list |
| 204 | * and also avoid a potential infinite loop because |
| 205 | * list_for_each_entry_safe() is not thread safe. |
| 206 | */ |
| 207 | goto restart; |
| 208 | } |
| 209 | |
| 210 | /* sk is safely in the parent list so reduce reference count */ |
| 211 | sock_put(sk); |
| 212 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | /* FIXME: Is this check still needed */ |
| 214 | if (sk->sk_state == BT_CLOSED) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | bt_accept_unlink(sk); |
Yichen Zhao | 1a11ec8 | 2015-12-01 11:11:01 -0800 | [diff] [blame] | 216 | release_sock(sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | continue; |
| 218 | } |
| 219 | |
Marcel Holtmann | c4f912e | 2009-01-15 21:52:16 +0100 | [diff] [blame] | 220 | if (sk->sk_state == BT_CONNECTED || !newsock || |
Vinicius Costa Gomes | d060991 | 2012-05-31 22:53:39 -0300 | [diff] [blame] | 221 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | bt_accept_unlink(sk); |
| 223 | if (newsock) |
| 224 | sock_graft(sk, newsock); |
Andrei Emeltchenko | d37f50e | 2011-01-24 10:53:24 +0200 | [diff] [blame] | 225 | |
Gustavo F. Padovan | 8a154a8 | 2011-12-20 17:15:56 -0200 | [diff] [blame] | 226 | release_sock(sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | return sk; |
| 228 | } |
| 229 | |
Gustavo F. Padovan | 8a154a8 | 2011-12-20 17:15:56 -0200 | [diff] [blame] | 230 | release_sock(sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | } |
Andrei Emeltchenko | d37f50e | 2011-01-24 10:53:24 +0200 | [diff] [blame] | 232 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | return NULL; |
| 234 | } |
| 235 | EXPORT_SYMBOL(bt_accept_dequeue); |
| 236 | |
Ying Xue | 1b78414 | 2015-03-02 15:37:48 +0800 | [diff] [blame] | 237 | int bt_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, |
| 238 | int flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | { |
| 240 | int noblock = flags & MSG_DONTWAIT; |
| 241 | struct sock *sk = sock->sk; |
| 242 | struct sk_buff *skb; |
| 243 | size_t copied; |
Denis Kenzior | b5f34f9 | 2016-06-27 11:01:12 -0500 | [diff] [blame] | 244 | size_t skblen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | int err; |
| 246 | |
Marcel Holtmann | a418b89 | 2008-11-30 12:17:28 +0100 | [diff] [blame] | 247 | BT_DBG("sock %p sk %p len %zu", sock, sk, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | |
Marcel Holtmann | d94a610 | 2015-10-25 22:45:18 +0100 | [diff] [blame] | 249 | if (flags & MSG_OOB) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | return -EOPNOTSUPP; |
| 251 | |
Andrei Emeltchenko | 5a08ecc | 2011-01-11 17:20:20 +0200 | [diff] [blame] | 252 | skb = skb_recv_datagram(sk, flags, noblock, &err); |
| 253 | if (!skb) { |
Hannes Frederic Sowa | f3d3342 | 2013-11-21 03:14:22 +0100 | [diff] [blame] | 254 | if (sk->sk_shutdown & RCV_SHUTDOWN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | return 0; |
Hannes Frederic Sowa | f3d3342 | 2013-11-21 03:14:22 +0100 | [diff] [blame] | 256 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | return err; |
| 258 | } |
| 259 | |
Denis Kenzior | b5f34f9 | 2016-06-27 11:01:12 -0500 | [diff] [blame] | 260 | skblen = skb->len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | copied = skb->len; |
| 262 | if (len < copied) { |
| 263 | msg->msg_flags |= MSG_TRUNC; |
| 264 | copied = len; |
| 265 | } |
| 266 | |
Arnaldo Carvalho de Melo | badff6d | 2007-03-13 13:06:52 -0300 | [diff] [blame] | 267 | skb_reset_transport_header(skb); |
David S. Miller | 51f3d02 | 2014-11-05 16:46:40 -0500 | [diff] [blame] | 268 | err = skb_copy_datagram_msg(skb, 0, msg, copied); |
Marcel Holtmann | d976369 | 2013-10-13 12:55:28 -0700 | [diff] [blame] | 269 | if (err == 0) { |
Neil Horman | 3b88578 | 2009-10-12 13:26:31 -0700 | [diff] [blame] | 270 | sock_recv_ts_and_drops(msg, sk, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | |
Marcel Holtmann | d976369 | 2013-10-13 12:55:28 -0700 | [diff] [blame] | 272 | if (bt_sk(sk)->skb_msg_name) |
| 273 | bt_sk(sk)->skb_msg_name(skb, msg->msg_name, |
| 274 | &msg->msg_namelen); |
Marcel Holtmann | d976369 | 2013-10-13 12:55:28 -0700 | [diff] [blame] | 275 | } |
| 276 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | skb_free_datagram(sk, skb); |
| 278 | |
Luiz Augusto von Dentz | 90a56f7 | 2016-08-12 15:11:28 +0300 | [diff] [blame] | 279 | if (flags & MSG_TRUNC) |
Denis Kenzior | b5f34f9 | 2016-06-27 11:01:12 -0500 | [diff] [blame] | 280 | copied = skblen; |
| 281 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | return err ? : copied; |
| 283 | } |
| 284 | EXPORT_SYMBOL(bt_sock_recvmsg); |
| 285 | |
Mat Martineau | 796c86e | 2010-09-08 10:05:27 -0700 | [diff] [blame] | 286 | static long bt_sock_data_wait(struct sock *sk, long timeo) |
| 287 | { |
| 288 | DECLARE_WAITQUEUE(wait, current); |
| 289 | |
| 290 | add_wait_queue(sk_sleep(sk), &wait); |
| 291 | for (;;) { |
| 292 | set_current_state(TASK_INTERRUPTIBLE); |
| 293 | |
| 294 | if (!skb_queue_empty(&sk->sk_receive_queue)) |
| 295 | break; |
| 296 | |
| 297 | if (sk->sk_err || (sk->sk_shutdown & RCV_SHUTDOWN)) |
| 298 | break; |
| 299 | |
| 300 | if (signal_pending(current) || !timeo) |
| 301 | break; |
| 302 | |
Eric Dumazet | 9cd3e07 | 2015-11-29 20:03:10 -0800 | [diff] [blame] | 303 | sk_set_bit(SOCKWQ_ASYNC_WAITDATA, sk); |
Mat Martineau | 796c86e | 2010-09-08 10:05:27 -0700 | [diff] [blame] | 304 | release_sock(sk); |
| 305 | timeo = schedule_timeout(timeo); |
| 306 | lock_sock(sk); |
Eric Dumazet | 9cd3e07 | 2015-11-29 20:03:10 -0800 | [diff] [blame] | 307 | sk_clear_bit(SOCKWQ_ASYNC_WAITDATA, sk); |
Mat Martineau | 796c86e | 2010-09-08 10:05:27 -0700 | [diff] [blame] | 308 | } |
| 309 | |
| 310 | __set_current_state(TASK_RUNNING); |
| 311 | remove_wait_queue(sk_sleep(sk), &wait); |
| 312 | return timeo; |
| 313 | } |
| 314 | |
Ying Xue | 1b78414 | 2015-03-02 15:37:48 +0800 | [diff] [blame] | 315 | int bt_sock_stream_recvmsg(struct socket *sock, struct msghdr *msg, |
| 316 | size_t size, int flags) |
Mat Martineau | 796c86e | 2010-09-08 10:05:27 -0700 | [diff] [blame] | 317 | { |
| 318 | struct sock *sk = sock->sk; |
| 319 | int err = 0; |
| 320 | size_t target, copied = 0; |
| 321 | long timeo; |
| 322 | |
| 323 | if (flags & MSG_OOB) |
| 324 | return -EOPNOTSUPP; |
| 325 | |
Mat Martineau | 796c86e | 2010-09-08 10:05:27 -0700 | [diff] [blame] | 326 | BT_DBG("sk %p size %zu", sk, size); |
| 327 | |
| 328 | lock_sock(sk); |
| 329 | |
| 330 | target = sock_rcvlowat(sk, flags & MSG_WAITALL, size); |
| 331 | timeo = sock_rcvtimeo(sk, flags & MSG_DONTWAIT); |
| 332 | |
| 333 | do { |
| 334 | struct sk_buff *skb; |
| 335 | int chunk; |
| 336 | |
| 337 | skb = skb_dequeue(&sk->sk_receive_queue); |
| 338 | if (!skb) { |
| 339 | if (copied >= target) |
| 340 | break; |
| 341 | |
Andrei Emeltchenko | 5a08ecc | 2011-01-11 17:20:20 +0200 | [diff] [blame] | 342 | err = sock_error(sk); |
| 343 | if (err) |
Mat Martineau | 796c86e | 2010-09-08 10:05:27 -0700 | [diff] [blame] | 344 | break; |
| 345 | if (sk->sk_shutdown & RCV_SHUTDOWN) |
| 346 | break; |
| 347 | |
| 348 | err = -EAGAIN; |
| 349 | if (!timeo) |
| 350 | break; |
| 351 | |
| 352 | timeo = bt_sock_data_wait(sk, timeo); |
| 353 | |
| 354 | if (signal_pending(current)) { |
| 355 | err = sock_intr_errno(timeo); |
| 356 | goto out; |
| 357 | } |
| 358 | continue; |
| 359 | } |
| 360 | |
| 361 | chunk = min_t(unsigned int, skb->len, size); |
David S. Miller | 51f3d02 | 2014-11-05 16:46:40 -0500 | [diff] [blame] | 362 | if (skb_copy_datagram_msg(skb, 0, msg, chunk)) { |
Mat Martineau | 796c86e | 2010-09-08 10:05:27 -0700 | [diff] [blame] | 363 | skb_queue_head(&sk->sk_receive_queue, skb); |
| 364 | if (!copied) |
| 365 | copied = -EFAULT; |
| 366 | break; |
| 367 | } |
| 368 | copied += chunk; |
| 369 | size -= chunk; |
| 370 | |
| 371 | sock_recv_ts_and_drops(msg, sk, skb); |
| 372 | |
| 373 | if (!(flags & MSG_PEEK)) { |
Mat Martineau | 5b668eb | 2011-07-22 14:53:59 -0700 | [diff] [blame] | 374 | int skb_len = skb_headlen(skb); |
| 375 | |
| 376 | if (chunk <= skb_len) { |
| 377 | __skb_pull(skb, chunk); |
| 378 | } else { |
| 379 | struct sk_buff *frag; |
| 380 | |
| 381 | __skb_pull(skb, skb_len); |
| 382 | chunk -= skb_len; |
| 383 | |
| 384 | skb_walk_frags(skb, frag) { |
| 385 | if (chunk <= frag->len) { |
| 386 | /* Pulling partial data */ |
| 387 | skb->len -= chunk; |
| 388 | skb->data_len -= chunk; |
| 389 | __skb_pull(frag, chunk); |
| 390 | break; |
| 391 | } else if (frag->len) { |
| 392 | /* Pulling all frag data */ |
| 393 | chunk -= frag->len; |
| 394 | skb->len -= frag->len; |
| 395 | skb->data_len -= frag->len; |
| 396 | __skb_pull(frag, frag->len); |
| 397 | } |
| 398 | } |
| 399 | } |
| 400 | |
Mat Martineau | 796c86e | 2010-09-08 10:05:27 -0700 | [diff] [blame] | 401 | if (skb->len) { |
| 402 | skb_queue_head(&sk->sk_receive_queue, skb); |
| 403 | break; |
| 404 | } |
| 405 | kfree_skb(skb); |
| 406 | |
| 407 | } else { |
| 408 | /* put message back and return */ |
| 409 | skb_queue_head(&sk->sk_receive_queue, skb); |
| 410 | break; |
| 411 | } |
| 412 | } while (size); |
| 413 | |
| 414 | out: |
| 415 | release_sock(sk); |
| 416 | return copied ? : err; |
| 417 | } |
| 418 | EXPORT_SYMBOL(bt_sock_stream_recvmsg); |
| 419 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | static inline unsigned int bt_accept_poll(struct sock *parent) |
| 421 | { |
Geliang Tang | 7eb7404 | 2015-12-18 23:33:25 +0800 | [diff] [blame] | 422 | struct bt_sock *s, *n; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | struct sock *sk; |
| 424 | |
Geliang Tang | 7eb7404 | 2015-12-18 23:33:25 +0800 | [diff] [blame] | 425 | list_for_each_entry_safe(s, n, &bt_sk(parent)->accept_q, accept_q) { |
| 426 | sk = (struct sock *)s; |
Marcel Holtmann | d5f2d2b | 2009-02-16 02:57:30 +0100 | [diff] [blame] | 427 | if (sk->sk_state == BT_CONNECTED || |
Gustavo Padovan | c5daa68 | 2012-05-16 12:17:10 -0300 | [diff] [blame] | 428 | (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags) && |
| 429 | sk->sk_state == BT_CONNECT2)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | return POLLIN | POLLRDNORM; |
| 431 | } |
| 432 | |
| 433 | return 0; |
| 434 | } |
| 435 | |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame] | 436 | unsigned int bt_sock_poll(struct file *file, struct socket *sock, |
| 437 | poll_table *wait) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | { |
| 439 | struct sock *sk = sock->sk; |
| 440 | unsigned int mask = 0; |
| 441 | |
| 442 | BT_DBG("sock %p, sk %p", sock, sk); |
| 443 | |
Eric Dumazet | aa39514 | 2010-04-20 13:03:51 +0000 | [diff] [blame] | 444 | poll_wait(file, sk_sleep(sk), wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | |
| 446 | if (sk->sk_state == BT_LISTEN) |
| 447 | return bt_accept_poll(sk); |
| 448 | |
| 449 | if (sk->sk_err || !skb_queue_empty(&sk->sk_error_queue)) |
Keller, Jacob E | 7d4c04f | 2013-03-28 11:19:25 +0000 | [diff] [blame] | 450 | mask |= POLLERR | |
Jacob Keller | 8facd5f | 2013-04-02 13:55:40 -0700 | [diff] [blame] | 451 | (sock_flag(sk, SOCK_SELECT_ERR_QUEUE) ? POLLPRI : 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | |
Davide Libenzi | f348d70 | 2006-03-25 03:07:39 -0800 | [diff] [blame] | 453 | if (sk->sk_shutdown & RCV_SHUTDOWN) |
Eric Dumazet | db40980 | 2010-09-06 11:13:50 +0000 | [diff] [blame] | 454 | mask |= POLLRDHUP | POLLIN | POLLRDNORM; |
Davide Libenzi | f348d70 | 2006-03-25 03:07:39 -0800 | [diff] [blame] | 455 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | if (sk->sk_shutdown == SHUTDOWN_MASK) |
| 457 | mask |= POLLHUP; |
| 458 | |
Eric Dumazet | db40980 | 2010-09-06 11:13:50 +0000 | [diff] [blame] | 459 | if (!skb_queue_empty(&sk->sk_receive_queue)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | mask |= POLLIN | POLLRDNORM; |
| 461 | |
| 462 | if (sk->sk_state == BT_CLOSED) |
| 463 | mask |= POLLHUP; |
| 464 | |
| 465 | if (sk->sk_state == BT_CONNECT || |
| 466 | sk->sk_state == BT_CONNECT2 || |
| 467 | sk->sk_state == BT_CONFIG) |
| 468 | return mask; |
| 469 | |
Gustavo Padovan | c5daa68 | 2012-05-16 12:17:10 -0300 | [diff] [blame] | 470 | if (!test_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags) && sock_writeable(sk)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | mask |= POLLOUT | POLLWRNORM | POLLWRBAND; |
| 472 | else |
Eric Dumazet | 9cd3e07 | 2015-11-29 20:03:10 -0800 | [diff] [blame] | 473 | sk_set_bit(SOCKWQ_ASYNC_NOSPACE, sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | |
| 475 | return mask; |
| 476 | } |
| 477 | EXPORT_SYMBOL(bt_sock_poll); |
| 478 | |
Marcel Holtmann | 3241ad8 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 479 | int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
| 480 | { |
| 481 | struct sock *sk = sock->sk; |
Marcel Holtmann | 43cbeee | 2008-07-14 20:13:51 +0200 | [diff] [blame] | 482 | struct sk_buff *skb; |
| 483 | long amount; |
Marcel Holtmann | 3241ad8 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 484 | int err; |
| 485 | |
| 486 | BT_DBG("sk %p cmd %x arg %lx", sk, cmd, arg); |
| 487 | |
| 488 | switch (cmd) { |
Marcel Holtmann | 43cbeee | 2008-07-14 20:13:51 +0200 | [diff] [blame] | 489 | case TIOCOUTQ: |
| 490 | if (sk->sk_state == BT_LISTEN) |
| 491 | return -EINVAL; |
| 492 | |
Eric Dumazet | 31e6d36 | 2009-06-17 19:05:41 -0700 | [diff] [blame] | 493 | amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk); |
Marcel Holtmann | 43cbeee | 2008-07-14 20:13:51 +0200 | [diff] [blame] | 494 | if (amount < 0) |
| 495 | amount = 0; |
| 496 | err = put_user(amount, (int __user *) arg); |
| 497 | break; |
| 498 | |
| 499 | case TIOCINQ: |
| 500 | if (sk->sk_state == BT_LISTEN) |
| 501 | return -EINVAL; |
| 502 | |
| 503 | lock_sock(sk); |
| 504 | skb = skb_peek(&sk->sk_receive_queue); |
| 505 | amount = skb ? skb->len : 0; |
| 506 | release_sock(sk); |
| 507 | err = put_user(amount, (int __user *) arg); |
| 508 | break; |
| 509 | |
Marcel Holtmann | 3241ad8 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 510 | case SIOCGSTAMP: |
| 511 | err = sock_get_timestamp(sk, (struct timeval __user *) arg); |
| 512 | break; |
| 513 | |
| 514 | case SIOCGSTAMPNS: |
| 515 | err = sock_get_timestampns(sk, (struct timespec __user *) arg); |
| 516 | break; |
| 517 | |
| 518 | default: |
| 519 | err = -ENOIOCTLCMD; |
| 520 | break; |
| 521 | } |
| 522 | |
| 523 | return err; |
| 524 | } |
| 525 | EXPORT_SYMBOL(bt_sock_ioctl); |
| 526 | |
Johan Hedberg | 0fba96f | 2013-09-25 13:26:04 +0300 | [diff] [blame] | 527 | /* This function expects the sk lock to be held when called */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo) |
| 529 | { |
| 530 | DECLARE_WAITQUEUE(wait, current); |
| 531 | int err = 0; |
| 532 | |
| 533 | BT_DBG("sk %p", sk); |
| 534 | |
Eric Dumazet | aa39514 | 2010-04-20 13:03:51 +0000 | [diff] [blame] | 535 | add_wait_queue(sk_sleep(sk), &wait); |
Peter Hurley | 9be4e3f | 2011-07-24 00:10:46 -0400 | [diff] [blame] | 536 | set_current_state(TASK_INTERRUPTIBLE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | while (sk->sk_state != state) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | if (!timeo) { |
Marcel Holtmann | b4c612a | 2006-09-23 09:54:38 +0200 | [diff] [blame] | 539 | err = -EINPROGRESS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | break; |
| 541 | } |
| 542 | |
| 543 | if (signal_pending(current)) { |
| 544 | err = sock_intr_errno(timeo); |
| 545 | break; |
| 546 | } |
| 547 | |
| 548 | release_sock(sk); |
| 549 | timeo = schedule_timeout(timeo); |
| 550 | lock_sock(sk); |
Peter Hurley | 9be4e3f | 2011-07-24 00:10:46 -0400 | [diff] [blame] | 551 | set_current_state(TASK_INTERRUPTIBLE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | |
Benjamin LaHaise | c1cbe4b | 2005-12-13 23:22:19 -0800 | [diff] [blame] | 553 | err = sock_error(sk); |
| 554 | if (err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | } |
Peter Hurley | 9be4e3f | 2011-07-24 00:10:46 -0400 | [diff] [blame] | 557 | __set_current_state(TASK_RUNNING); |
Eric Dumazet | aa39514 | 2010-04-20 13:03:51 +0000 | [diff] [blame] | 558 | remove_wait_queue(sk_sleep(sk), &wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | return err; |
| 560 | } |
| 561 | EXPORT_SYMBOL(bt_sock_wait_state); |
| 562 | |
Johan Hedberg | e793dcf | 2013-09-16 13:05:19 +0300 | [diff] [blame] | 563 | /* This function expects the sk lock to be held when called */ |
| 564 | int bt_sock_wait_ready(struct sock *sk, unsigned long flags) |
| 565 | { |
| 566 | DECLARE_WAITQUEUE(wait, current); |
| 567 | unsigned long timeo; |
| 568 | int err = 0; |
| 569 | |
| 570 | BT_DBG("sk %p", sk); |
| 571 | |
| 572 | timeo = sock_sndtimeo(sk, flags & O_NONBLOCK); |
| 573 | |
| 574 | add_wait_queue(sk_sleep(sk), &wait); |
| 575 | set_current_state(TASK_INTERRUPTIBLE); |
| 576 | while (test_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags)) { |
| 577 | if (!timeo) { |
| 578 | err = -EAGAIN; |
| 579 | break; |
| 580 | } |
| 581 | |
| 582 | if (signal_pending(current)) { |
| 583 | err = sock_intr_errno(timeo); |
| 584 | break; |
| 585 | } |
| 586 | |
| 587 | release_sock(sk); |
| 588 | timeo = schedule_timeout(timeo); |
| 589 | lock_sock(sk); |
| 590 | set_current_state(TASK_INTERRUPTIBLE); |
| 591 | |
| 592 | err = sock_error(sk); |
| 593 | if (err) |
| 594 | break; |
| 595 | } |
| 596 | __set_current_state(TASK_RUNNING); |
| 597 | remove_wait_queue(sk_sleep(sk), &wait); |
| 598 | |
| 599 | return err; |
| 600 | } |
| 601 | EXPORT_SYMBOL(bt_sock_wait_ready); |
| 602 | |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 603 | #ifdef CONFIG_PROC_FS |
| 604 | struct bt_seq_state { |
| 605 | struct bt_sock_list *l; |
| 606 | }; |
| 607 | |
| 608 | static void *bt_seq_start(struct seq_file *seq, loff_t *pos) |
| 609 | __acquires(seq->private->l->lock) |
| 610 | { |
| 611 | struct bt_seq_state *s = seq->private; |
| 612 | struct bt_sock_list *l = s->l; |
| 613 | |
| 614 | read_lock(&l->lock); |
| 615 | return seq_hlist_start_head(&l->head, *pos); |
| 616 | } |
| 617 | |
| 618 | static void *bt_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
| 619 | { |
| 620 | struct bt_seq_state *s = seq->private; |
| 621 | struct bt_sock_list *l = s->l; |
| 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_seq_state *s = seq->private; |
| 630 | struct bt_sock_list *l = s->l; |
| 631 | |
| 632 | read_unlock(&l->lock); |
| 633 | } |
| 634 | |
| 635 | static int bt_seq_show(struct seq_file *seq, void *v) |
| 636 | { |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 637 | struct bt_seq_state *s = seq->private; |
| 638 | struct bt_sock_list *l = s->l; |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 639 | |
| 640 | if (v == SEQ_START_TOKEN) { |
Marcel Holtmann | c560575 | 2013-10-14 02:05:25 -0700 | [diff] [blame] | 641 | seq_puts(seq ,"sk RefCnt Rmem Wmem User Inode Parent"); |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 642 | |
| 643 | if (l->custom_seq_show) { |
| 644 | seq_putc(seq, ' '); |
| 645 | l->custom_seq_show(seq, v); |
| 646 | } |
| 647 | |
| 648 | seq_putc(seq, '\n'); |
| 649 | } else { |
Andrei Emeltchenko | 09d5d4a | 2012-08-07 18:05:04 +0300 | [diff] [blame] | 650 | struct sock *sk = sk_entry(v); |
| 651 | struct bt_sock *bt = bt_sk(sk); |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 652 | |
Andrei Emeltchenko | 7028a88 | 2012-09-25 12:49:45 +0300 | [diff] [blame] | 653 | seq_printf(seq, |
Marcel Holtmann | 5f6cd79 | 2013-10-13 10:34:03 -0700 | [diff] [blame] | 654 | "%pK %-6d %-6u %-6u %-6u %-6lu %-6lu", |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 655 | sk, |
| 656 | atomic_read(&sk->sk_refcnt), |
| 657 | sk_rmem_alloc_get(sk), |
| 658 | sk_wmem_alloc_get(sk), |
Eric W. Biederman | 1bbb309 | 2012-10-03 20:32:17 -0700 | [diff] [blame] | 659 | from_kuid(seq_user_ns(seq), sock_i_uid(sk)), |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 660 | sock_i_ino(sk), |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 661 | bt->parent? sock_i_ino(bt->parent): 0LU); |
| 662 | |
| 663 | if (l->custom_seq_show) { |
| 664 | seq_putc(seq, ' '); |
| 665 | l->custom_seq_show(seq, v); |
| 666 | } |
| 667 | |
| 668 | seq_putc(seq, '\n'); |
| 669 | } |
| 670 | return 0; |
| 671 | } |
| 672 | |
Fabian Frederick | 26b0f4e | 2014-06-30 19:26:23 +0200 | [diff] [blame] | 673 | static const struct seq_operations bt_seq_ops = { |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 674 | .start = bt_seq_start, |
| 675 | .next = bt_seq_next, |
| 676 | .stop = bt_seq_stop, |
| 677 | .show = bt_seq_show, |
| 678 | }; |
| 679 | |
| 680 | static int bt_seq_open(struct inode *inode, struct file *file) |
| 681 | { |
| 682 | struct bt_sock_list *sk_list; |
| 683 | struct bt_seq_state *s; |
| 684 | |
Al Viro | d9dda78 | 2013-03-31 18:16:14 -0400 | [diff] [blame] | 685 | sk_list = PDE_DATA(inode); |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 686 | s = __seq_open_private(file, &bt_seq_ops, |
| 687 | sizeof(struct bt_seq_state)); |
Andrei Emeltchenko | 31f4707 | 2012-08-07 18:05:06 +0300 | [diff] [blame] | 688 | if (!s) |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 689 | return -ENOMEM; |
| 690 | |
| 691 | s->l = sk_list; |
| 692 | return 0; |
| 693 | } |
| 694 | |
Al Viro | 1480535 | 2013-04-04 19:12:06 -0400 | [diff] [blame] | 695 | static const struct file_operations bt_fops = { |
| 696 | .open = bt_seq_open, |
| 697 | .read = seq_read, |
| 698 | .llseek = seq_lseek, |
| 699 | .release = seq_release_private |
| 700 | }; |
| 701 | |
Al Viro | b031661 | 2013-04-04 19:14:33 -0400 | [diff] [blame] | 702 | int bt_procfs_init(struct net *net, const char *name, |
Prasanna Karthik | f37590b | 2015-11-17 11:06:53 +0000 | [diff] [blame] | 703 | struct bt_sock_list *sk_list, |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 704 | int (* seq_show)(struct seq_file *, void *)) |
| 705 | { |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 706 | sk_list->custom_seq_show = seq_show; |
| 707 | |
Al Viro | 4d00626 | 2013-04-04 19:16:06 -0400 | [diff] [blame] | 708 | if (!proc_create_data(name, 0, net->proc_net, &bt_fops, sk_list)) |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 709 | return -ENOMEM; |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 710 | return 0; |
| 711 | } |
| 712 | |
| 713 | void bt_procfs_cleanup(struct net *net, const char *name) |
| 714 | { |
Gao feng | ece31ff | 2013-02-18 01:34:56 +0000 | [diff] [blame] | 715 | remove_proc_entry(name, net->proc_net); |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 716 | } |
| 717 | #else |
Al Viro | b031661 | 2013-04-04 19:14:33 -0400 | [diff] [blame] | 718 | int bt_procfs_init(struct net *net, const char *name, |
Prasanna Karthik | f37590b | 2015-11-17 11:06:53 +0000 | [diff] [blame] | 719 | struct bt_sock_list *sk_list, |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 720 | int (* seq_show)(struct seq_file *, void *)) |
| 721 | { |
| 722 | return 0; |
| 723 | } |
| 724 | |
| 725 | void bt_procfs_cleanup(struct net *net, const char *name) |
| 726 | { |
| 727 | } |
| 728 | #endif |
| 729 | EXPORT_SYMBOL(bt_procfs_init); |
| 730 | EXPORT_SYMBOL(bt_procfs_cleanup); |
| 731 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | static struct net_proto_family bt_sock_family_ops = { |
| 733 | .owner = THIS_MODULE, |
| 734 | .family = PF_BLUETOOTH, |
| 735 | .create = bt_sock_create, |
| 736 | }; |
| 737 | |
Marcel Holtmann | ffcecac | 2013-10-17 17:24:18 -0700 | [diff] [blame] | 738 | struct dentry *bt_debugfs; |
| 739 | EXPORT_SYMBOL_GPL(bt_debugfs); |
| 740 | |
Marcel Holtmann | 9e8305b | 2016-08-30 05:00:35 +0200 | [diff] [blame] | 741 | #define VERSION __stringify(BT_SUBSYS_VERSION) "." \ |
| 742 | __stringify(BT_SUBSYS_REVISION) |
| 743 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | static int __init bt_init(void) |
| 745 | { |
Marcel Holtmann | 27d3528 | 2006-07-03 10:02:37 +0200 | [diff] [blame] | 746 | int err; |
| 747 | |
Eyal Birger | b4772ef | 2015-03-01 14:58:29 +0200 | [diff] [blame] | 748 | sock_skb_cb_check_size(sizeof(struct bt_skb_cb)); |
Marcel Holtmann | 7cb9d20 | 2014-09-14 22:50:46 +0200 | [diff] [blame] | 749 | |
Marcel Holtmann | 9e8305b | 2016-08-30 05:00:35 +0200 | [diff] [blame] | 750 | BT_INFO("Core ver %s", VERSION); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | |
Marcel Holtmann | ee48529 | 2014-12-29 20:48:35 -0800 | [diff] [blame] | 752 | err = bt_selftest(); |
| 753 | if (err < 0) |
| 754 | return err; |
| 755 | |
Marcel Holtmann | ffcecac | 2013-10-17 17:24:18 -0700 | [diff] [blame] | 756 | bt_debugfs = debugfs_create_dir("bluetooth", NULL); |
| 757 | |
Marcel Holtmann | e64c97b | 2016-07-21 14:12:41 +0200 | [diff] [blame] | 758 | bt_leds_init(); |
| 759 | |
Marcel Holtmann | 27d3528 | 2006-07-03 10:02:37 +0200 | [diff] [blame] | 760 | err = bt_sysfs_init(); |
| 761 | if (err < 0) |
| 762 | return err; |
| 763 | |
| 764 | err = sock_register(&bt_sock_family_ops); |
| 765 | if (err < 0) { |
| 766 | bt_sysfs_cleanup(); |
| 767 | return err; |
| 768 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | |
| 770 | BT_INFO("HCI device and connection manager initialized"); |
| 771 | |
Gustavo F. Padovan | 6427451 | 2011-02-07 20:08:52 -0200 | [diff] [blame] | 772 | err = hci_sock_init(); |
| 773 | if (err < 0) |
| 774 | goto error; |
| 775 | |
| 776 | err = l2cap_init(); |
Anand Gadiyar | 0ed54da | 2011-02-22 12:43:26 +0530 | [diff] [blame] | 777 | if (err < 0) |
Gustavo F. Padovan | 6427451 | 2011-02-07 20:08:52 -0200 | [diff] [blame] | 778 | goto sock_err; |
Gustavo F. Padovan | 6427451 | 2011-02-07 20:08:52 -0200 | [diff] [blame] | 779 | |
| 780 | err = sco_init(); |
| 781 | if (err < 0) { |
| 782 | l2cap_exit(); |
| 783 | goto sock_err; |
| 784 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 785 | |
Johan Hedberg | 6d785aa3 | 2015-03-06 21:08:51 +0200 | [diff] [blame] | 786 | err = mgmt_init(); |
| 787 | if (err < 0) { |
| 788 | sco_exit(); |
| 789 | l2cap_exit(); |
| 790 | goto sock_err; |
| 791 | } |
| 792 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | return 0; |
Gustavo F. Padovan | 6427451 | 2011-02-07 20:08:52 -0200 | [diff] [blame] | 794 | |
| 795 | sock_err: |
| 796 | hci_sock_cleanup(); |
| 797 | |
| 798 | error: |
| 799 | sock_unregister(PF_BLUETOOTH); |
| 800 | bt_sysfs_cleanup(); |
| 801 | |
| 802 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | } |
| 804 | |
| 805 | static void __exit bt_exit(void) |
| 806 | { |
Johan Hedberg | 6d785aa3 | 2015-03-06 21:08:51 +0200 | [diff] [blame] | 807 | mgmt_exit(); |
| 808 | |
Gustavo F. Padovan | 6427451 | 2011-02-07 20:08:52 -0200 | [diff] [blame] | 809 | sco_exit(); |
| 810 | |
| 811 | l2cap_exit(); |
| 812 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | hci_sock_cleanup(); |
| 814 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 815 | sock_unregister(PF_BLUETOOTH); |
Marcel Holtmann | 27d3528 | 2006-07-03 10:02:37 +0200 | [diff] [blame] | 816 | |
| 817 | bt_sysfs_cleanup(); |
Marcel Holtmann | ffcecac | 2013-10-17 17:24:18 -0700 | [diff] [blame] | 818 | |
Marcel Holtmann | e64c97b | 2016-07-21 14:12:41 +0200 | [diff] [blame] | 819 | bt_leds_cleanup(); |
| 820 | |
Marcel Holtmann | ffcecac | 2013-10-17 17:24:18 -0700 | [diff] [blame] | 821 | debugfs_remove_recursive(bt_debugfs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | } |
| 823 | |
| 824 | subsys_initcall(bt_init); |
| 825 | module_exit(bt_exit); |
| 826 | |
Marcel Holtmann | 63fbd24 | 2008-08-18 13:23:53 +0200 | [diff] [blame] | 827 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
Marcel Holtmann | 9e8305b | 2016-08-30 05:00:35 +0200 | [diff] [blame] | 828 | MODULE_DESCRIPTION("Bluetooth Core ver " VERSION); |
| 829 | MODULE_VERSION(VERSION); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 830 | MODULE_LICENSE("GPL"); |
| 831 | MODULE_ALIAS_NETPROTO(PF_BLUETOOTH); |