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 | |
Robert Love | ec2622b | 2008-10-15 15:35:44 -0400 | [diff] [blame] | 109 | #ifdef CONFIG_PARANOID_NETWORK |
| 110 | static inline int current_has_bt_admin(void) |
| 111 | { |
| 112 | return !current_euid(); |
| 113 | } |
| 114 | |
| 115 | static inline int current_has_bt(void) |
| 116 | { |
| 117 | return current_has_bt_admin(); |
| 118 | } |
| 119 | # else |
| 120 | static inline int current_has_bt_admin(void) |
| 121 | { |
| 122 | return 1; |
| 123 | } |
| 124 | |
| 125 | static inline int current_has_bt(void) |
| 126 | { |
| 127 | return 1; |
| 128 | } |
| 129 | #endif |
| 130 | |
Eric Paris | 3f378b6 | 2009-11-05 22:18:14 -0800 | [diff] [blame] | 131 | static int bt_sock_create(struct net *net, struct socket *sock, int proto, |
| 132 | int kern) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | { |
Marcel Holtmann | 74da626 | 2006-10-15 17:31:14 +0200 | [diff] [blame] | 134 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | |
Robert Love | ec2622b | 2008-10-15 15:35:44 -0400 | [diff] [blame] | 136 | if (proto == BTPROTO_RFCOMM || proto == BTPROTO_SCO || |
| 137 | proto == BTPROTO_L2CAP) { |
| 138 | if (!current_has_bt()) |
| 139 | return -EPERM; |
| 140 | } else if (!current_has_bt_admin()) |
| 141 | return -EPERM; |
| 142 | |
Eric W. Biederman | 1b8d7ae | 2007-10-08 23:24:22 -0700 | [diff] [blame] | 143 | if (net != &init_net) |
| 144 | return -EAFNOSUPPORT; |
| 145 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | if (proto < 0 || proto >= BT_MAX_PROTO) |
| 147 | return -EINVAL; |
| 148 | |
Johannes Berg | 95a5afc | 2008-10-16 15:24:51 -0700 | [diff] [blame] | 149 | if (!bt_proto[proto]) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | request_module("bt-proto-%d", proto); |
Marcel Holtmann | 74da626 | 2006-10-15 17:31:14 +0200 | [diff] [blame] | 151 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | err = -EPROTONOSUPPORT; |
Marcel Holtmann | 74da626 | 2006-10-15 17:31:14 +0200 | [diff] [blame] | 153 | |
| 154 | read_lock(&bt_proto_lock); |
| 155 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | if (bt_proto[proto] && try_module_get(bt_proto[proto]->owner)) { |
Eric Paris | 3f378b6 | 2009-11-05 22:18:14 -0800 | [diff] [blame] | 157 | err = bt_proto[proto]->create(net, sock, proto, kern); |
Octavian Purdila | b5a30dd | 2012-01-22 00:28:34 +0200 | [diff] [blame] | 158 | if (!err) |
| 159 | bt_sock_reclassify_lock(sock->sk, proto); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | module_put(bt_proto[proto]->owner); |
| 161 | } |
Marcel Holtmann | 74da626 | 2006-10-15 17:31:14 +0200 | [diff] [blame] | 162 | |
| 163 | read_unlock(&bt_proto_lock); |
| 164 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 165 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | } |
| 167 | |
| 168 | void bt_sock_link(struct bt_sock_list *l, struct sock *sk) |
| 169 | { |
Gustavo F. Padovan | 94f5bfb | 2011-12-27 15:28:48 -0200 | [diff] [blame] | 170 | write_lock(&l->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | sk_add_node(sk, &l->head); |
Gustavo F. Padovan | 94f5bfb | 2011-12-27 15:28:48 -0200 | [diff] [blame] | 172 | write_unlock(&l->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | } |
| 174 | EXPORT_SYMBOL(bt_sock_link); |
| 175 | |
| 176 | void bt_sock_unlink(struct bt_sock_list *l, struct sock *sk) |
| 177 | { |
Gustavo F. Padovan | 94f5bfb | 2011-12-27 15:28:48 -0200 | [diff] [blame] | 178 | write_lock(&l->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | sk_del_node_init(sk); |
Gustavo F. Padovan | 94f5bfb | 2011-12-27 15:28:48 -0200 | [diff] [blame] | 180 | write_unlock(&l->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | } |
| 182 | EXPORT_SYMBOL(bt_sock_unlink); |
| 183 | |
| 184 | void bt_accept_enqueue(struct sock *parent, struct sock *sk) |
| 185 | { |
| 186 | BT_DBG("parent %p, sk %p", parent, sk); |
| 187 | |
| 188 | sock_hold(sk); |
| 189 | list_add_tail(&bt_sk(sk)->accept_q, &bt_sk(parent)->accept_q); |
| 190 | bt_sk(sk)->parent = parent; |
| 191 | parent->sk_ack_backlog++; |
| 192 | } |
| 193 | EXPORT_SYMBOL(bt_accept_enqueue); |
| 194 | |
Dean Jenkins | f3fa28a | 2017-03-10 11:34:46 +0000 | [diff] [blame] | 195 | /* Calling function must hold the sk lock. |
| 196 | * bt_sk(sk)->parent must be non-NULL meaning sk is in the parent list. |
| 197 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | void bt_accept_unlink(struct sock *sk) |
| 199 | { |
| 200 | BT_DBG("sk %p state %d", sk, sk->sk_state); |
| 201 | |
| 202 | list_del_init(&bt_sk(sk)->accept_q); |
| 203 | bt_sk(sk)->parent->sk_ack_backlog--; |
| 204 | bt_sk(sk)->parent = NULL; |
| 205 | sock_put(sk); |
| 206 | } |
| 207 | EXPORT_SYMBOL(bt_accept_unlink); |
| 208 | |
| 209 | struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock) |
| 210 | { |
Geliang Tang | 7eb7404 | 2015-12-18 23:33:25 +0800 | [diff] [blame] | 211 | struct bt_sock *s, *n; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | struct sock *sk; |
| 213 | |
| 214 | BT_DBG("parent %p", parent); |
| 215 | |
Dean Jenkins | f3fa28a | 2017-03-10 11:34:46 +0000 | [diff] [blame] | 216 | restart: |
Geliang Tang | 7eb7404 | 2015-12-18 23:33:25 +0800 | [diff] [blame] | 217 | list_for_each_entry_safe(s, n, &bt_sk(parent)->accept_q, accept_q) { |
| 218 | sk = (struct sock *)s; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | |
Dean Jenkins | f3fa28a | 2017-03-10 11:34:46 +0000 | [diff] [blame] | 220 | /* Prevent early freeing of sk due to unlink and sock_kill */ |
| 221 | sock_hold(sk); |
Gustavo F. Padovan | 8a154a8 | 2011-12-20 17:15:56 -0200 | [diff] [blame] | 222 | lock_sock(sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | |
Dean Jenkins | f3fa28a | 2017-03-10 11:34:46 +0000 | [diff] [blame] | 224 | /* Check sk has not already been unlinked via |
| 225 | * bt_accept_unlink() due to serialisation caused by sk locking |
| 226 | */ |
| 227 | if (!bt_sk(sk)->parent) { |
| 228 | BT_DBG("sk %p, already unlinked", sk); |
| 229 | release_sock(sk); |
| 230 | sock_put(sk); |
| 231 | |
| 232 | /* Restart the loop as sk is no longer in the list |
| 233 | * and also avoid a potential infinite loop because |
| 234 | * list_for_each_entry_safe() is not thread safe. |
| 235 | */ |
| 236 | goto restart; |
| 237 | } |
| 238 | |
| 239 | /* sk is safely in the parent list so reduce reference count */ |
| 240 | sock_put(sk); |
| 241 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | /* FIXME: Is this check still needed */ |
| 243 | if (sk->sk_state == BT_CLOSED) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | bt_accept_unlink(sk); |
Yichen Zhao | 1a11ec8 | 2015-12-01 11:11:01 -0800 | [diff] [blame] | 245 | release_sock(sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | continue; |
| 247 | } |
| 248 | |
Marcel Holtmann | c4f912e | 2009-01-15 21:52:16 +0100 | [diff] [blame] | 249 | if (sk->sk_state == BT_CONNECTED || !newsock || |
Vinicius Costa Gomes | d060991 | 2012-05-31 22:53:39 -0300 | [diff] [blame] | 250 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | bt_accept_unlink(sk); |
| 252 | if (newsock) |
| 253 | sock_graft(sk, newsock); |
Andrei Emeltchenko | d37f50e | 2011-01-24 10:53:24 +0200 | [diff] [blame] | 254 | |
Gustavo F. Padovan | 8a154a8 | 2011-12-20 17:15:56 -0200 | [diff] [blame] | 255 | release_sock(sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | return sk; |
| 257 | } |
| 258 | |
Gustavo F. Padovan | 8a154a8 | 2011-12-20 17:15:56 -0200 | [diff] [blame] | 259 | release_sock(sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | } |
Andrei Emeltchenko | d37f50e | 2011-01-24 10:53:24 +0200 | [diff] [blame] | 261 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | return NULL; |
| 263 | } |
| 264 | EXPORT_SYMBOL(bt_accept_dequeue); |
| 265 | |
Ying Xue | 1b78414 | 2015-03-02 15:37:48 +0800 | [diff] [blame] | 266 | int bt_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, |
| 267 | int flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | { |
| 269 | int noblock = flags & MSG_DONTWAIT; |
| 270 | struct sock *sk = sock->sk; |
| 271 | struct sk_buff *skb; |
| 272 | size_t copied; |
Denis Kenzior | b5f34f9 | 2016-06-27 11:01:12 -0500 | [diff] [blame] | 273 | size_t skblen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | int err; |
| 275 | |
Marcel Holtmann | a418b89 | 2008-11-30 12:17:28 +0100 | [diff] [blame] | 276 | BT_DBG("sock %p sk %p len %zu", sock, sk, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | |
Marcel Holtmann | d94a610 | 2015-10-25 22:45:18 +0100 | [diff] [blame] | 278 | if (flags & MSG_OOB) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | return -EOPNOTSUPP; |
| 280 | |
Andrei Emeltchenko | 5a08ecc | 2011-01-11 17:20:20 +0200 | [diff] [blame] | 281 | skb = skb_recv_datagram(sk, flags, noblock, &err); |
| 282 | if (!skb) { |
Hannes Frederic Sowa | f3d3342 | 2013-11-21 03:14:22 +0100 | [diff] [blame] | 283 | if (sk->sk_shutdown & RCV_SHUTDOWN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | return 0; |
Hannes Frederic Sowa | f3d3342 | 2013-11-21 03:14:22 +0100 | [diff] [blame] | 285 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | return err; |
| 287 | } |
| 288 | |
Denis Kenzior | b5f34f9 | 2016-06-27 11:01:12 -0500 | [diff] [blame] | 289 | skblen = skb->len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | copied = skb->len; |
| 291 | if (len < copied) { |
| 292 | msg->msg_flags |= MSG_TRUNC; |
| 293 | copied = len; |
| 294 | } |
| 295 | |
Arnaldo Carvalho de Melo | badff6d | 2007-03-13 13:06:52 -0300 | [diff] [blame] | 296 | skb_reset_transport_header(skb); |
David S. Miller | 51f3d02 | 2014-11-05 16:46:40 -0500 | [diff] [blame] | 297 | err = skb_copy_datagram_msg(skb, 0, msg, copied); |
Marcel Holtmann | d976369 | 2013-10-13 12:55:28 -0700 | [diff] [blame] | 298 | if (err == 0) { |
Neil Horman | 3b88578 | 2009-10-12 13:26:31 -0700 | [diff] [blame] | 299 | sock_recv_ts_and_drops(msg, sk, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | |
Marcel Holtmann | d976369 | 2013-10-13 12:55:28 -0700 | [diff] [blame] | 301 | if (bt_sk(sk)->skb_msg_name) |
| 302 | bt_sk(sk)->skb_msg_name(skb, msg->msg_name, |
| 303 | &msg->msg_namelen); |
Marcel Holtmann | d976369 | 2013-10-13 12:55:28 -0700 | [diff] [blame] | 304 | } |
| 305 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | skb_free_datagram(sk, skb); |
| 307 | |
Luiz Augusto von Dentz | 90a56f7 | 2016-08-12 15:11:28 +0300 | [diff] [blame] | 308 | if (flags & MSG_TRUNC) |
Denis Kenzior | b5f34f9 | 2016-06-27 11:01:12 -0500 | [diff] [blame] | 309 | copied = skblen; |
| 310 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | return err ? : copied; |
| 312 | } |
| 313 | EXPORT_SYMBOL(bt_sock_recvmsg); |
| 314 | |
Mat Martineau | 796c86e | 2010-09-08 10:05:27 -0700 | [diff] [blame] | 315 | static long bt_sock_data_wait(struct sock *sk, long timeo) |
| 316 | { |
| 317 | DECLARE_WAITQUEUE(wait, current); |
| 318 | |
| 319 | add_wait_queue(sk_sleep(sk), &wait); |
| 320 | for (;;) { |
| 321 | set_current_state(TASK_INTERRUPTIBLE); |
| 322 | |
| 323 | if (!skb_queue_empty(&sk->sk_receive_queue)) |
| 324 | break; |
| 325 | |
| 326 | if (sk->sk_err || (sk->sk_shutdown & RCV_SHUTDOWN)) |
| 327 | break; |
| 328 | |
| 329 | if (signal_pending(current) || !timeo) |
| 330 | break; |
| 331 | |
Eric Dumazet | 9cd3e07 | 2015-11-29 20:03:10 -0800 | [diff] [blame] | 332 | sk_set_bit(SOCKWQ_ASYNC_WAITDATA, sk); |
Mat Martineau | 796c86e | 2010-09-08 10:05:27 -0700 | [diff] [blame] | 333 | release_sock(sk); |
| 334 | timeo = schedule_timeout(timeo); |
| 335 | lock_sock(sk); |
Eric Dumazet | 9cd3e07 | 2015-11-29 20:03:10 -0800 | [diff] [blame] | 336 | sk_clear_bit(SOCKWQ_ASYNC_WAITDATA, sk); |
Mat Martineau | 796c86e | 2010-09-08 10:05:27 -0700 | [diff] [blame] | 337 | } |
| 338 | |
| 339 | __set_current_state(TASK_RUNNING); |
| 340 | remove_wait_queue(sk_sleep(sk), &wait); |
| 341 | return timeo; |
| 342 | } |
| 343 | |
Ying Xue | 1b78414 | 2015-03-02 15:37:48 +0800 | [diff] [blame] | 344 | int bt_sock_stream_recvmsg(struct socket *sock, struct msghdr *msg, |
| 345 | size_t size, int flags) |
Mat Martineau | 796c86e | 2010-09-08 10:05:27 -0700 | [diff] [blame] | 346 | { |
| 347 | struct sock *sk = sock->sk; |
| 348 | int err = 0; |
| 349 | size_t target, copied = 0; |
| 350 | long timeo; |
| 351 | |
| 352 | if (flags & MSG_OOB) |
| 353 | return -EOPNOTSUPP; |
| 354 | |
Mat Martineau | 796c86e | 2010-09-08 10:05:27 -0700 | [diff] [blame] | 355 | BT_DBG("sk %p size %zu", sk, size); |
| 356 | |
| 357 | lock_sock(sk); |
| 358 | |
| 359 | target = sock_rcvlowat(sk, flags & MSG_WAITALL, size); |
| 360 | timeo = sock_rcvtimeo(sk, flags & MSG_DONTWAIT); |
| 361 | |
| 362 | do { |
| 363 | struct sk_buff *skb; |
| 364 | int chunk; |
| 365 | |
| 366 | skb = skb_dequeue(&sk->sk_receive_queue); |
| 367 | if (!skb) { |
| 368 | if (copied >= target) |
| 369 | break; |
| 370 | |
Andrei Emeltchenko | 5a08ecc | 2011-01-11 17:20:20 +0200 | [diff] [blame] | 371 | err = sock_error(sk); |
| 372 | if (err) |
Mat Martineau | 796c86e | 2010-09-08 10:05:27 -0700 | [diff] [blame] | 373 | break; |
| 374 | if (sk->sk_shutdown & RCV_SHUTDOWN) |
| 375 | break; |
| 376 | |
| 377 | err = -EAGAIN; |
| 378 | if (!timeo) |
| 379 | break; |
| 380 | |
| 381 | timeo = bt_sock_data_wait(sk, timeo); |
| 382 | |
| 383 | if (signal_pending(current)) { |
| 384 | err = sock_intr_errno(timeo); |
| 385 | goto out; |
| 386 | } |
| 387 | continue; |
| 388 | } |
| 389 | |
| 390 | chunk = min_t(unsigned int, skb->len, size); |
David S. Miller | 51f3d02 | 2014-11-05 16:46:40 -0500 | [diff] [blame] | 391 | if (skb_copy_datagram_msg(skb, 0, msg, chunk)) { |
Mat Martineau | 796c86e | 2010-09-08 10:05:27 -0700 | [diff] [blame] | 392 | skb_queue_head(&sk->sk_receive_queue, skb); |
| 393 | if (!copied) |
| 394 | copied = -EFAULT; |
| 395 | break; |
| 396 | } |
| 397 | copied += chunk; |
| 398 | size -= chunk; |
| 399 | |
| 400 | sock_recv_ts_and_drops(msg, sk, skb); |
| 401 | |
| 402 | if (!(flags & MSG_PEEK)) { |
Mat Martineau | 5b668eb | 2011-07-22 14:53:59 -0700 | [diff] [blame] | 403 | int skb_len = skb_headlen(skb); |
| 404 | |
| 405 | if (chunk <= skb_len) { |
| 406 | __skb_pull(skb, chunk); |
| 407 | } else { |
| 408 | struct sk_buff *frag; |
| 409 | |
| 410 | __skb_pull(skb, skb_len); |
| 411 | chunk -= skb_len; |
| 412 | |
| 413 | skb_walk_frags(skb, frag) { |
| 414 | if (chunk <= frag->len) { |
| 415 | /* Pulling partial data */ |
| 416 | skb->len -= chunk; |
| 417 | skb->data_len -= chunk; |
| 418 | __skb_pull(frag, chunk); |
| 419 | break; |
| 420 | } else if (frag->len) { |
| 421 | /* Pulling all frag data */ |
| 422 | chunk -= frag->len; |
| 423 | skb->len -= frag->len; |
| 424 | skb->data_len -= frag->len; |
| 425 | __skb_pull(frag, frag->len); |
| 426 | } |
| 427 | } |
| 428 | } |
| 429 | |
Mat Martineau | 796c86e | 2010-09-08 10:05:27 -0700 | [diff] [blame] | 430 | if (skb->len) { |
| 431 | skb_queue_head(&sk->sk_receive_queue, skb); |
| 432 | break; |
| 433 | } |
| 434 | kfree_skb(skb); |
| 435 | |
| 436 | } else { |
| 437 | /* put message back and return */ |
| 438 | skb_queue_head(&sk->sk_receive_queue, skb); |
| 439 | break; |
| 440 | } |
| 441 | } while (size); |
| 442 | |
| 443 | out: |
| 444 | release_sock(sk); |
| 445 | return copied ? : err; |
| 446 | } |
| 447 | EXPORT_SYMBOL(bt_sock_stream_recvmsg); |
| 448 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | static inline unsigned int bt_accept_poll(struct sock *parent) |
| 450 | { |
Geliang Tang | 7eb7404 | 2015-12-18 23:33:25 +0800 | [diff] [blame] | 451 | struct bt_sock *s, *n; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | struct sock *sk; |
| 453 | |
Geliang Tang | 7eb7404 | 2015-12-18 23:33:25 +0800 | [diff] [blame] | 454 | list_for_each_entry_safe(s, n, &bt_sk(parent)->accept_q, accept_q) { |
| 455 | sk = (struct sock *)s; |
Marcel Holtmann | d5f2d2b | 2009-02-16 02:57:30 +0100 | [diff] [blame] | 456 | if (sk->sk_state == BT_CONNECTED || |
Gustavo Padovan | c5daa68 | 2012-05-16 12:17:10 -0300 | [diff] [blame] | 457 | (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags) && |
| 458 | sk->sk_state == BT_CONNECT2)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | return POLLIN | POLLRDNORM; |
| 460 | } |
| 461 | |
| 462 | return 0; |
| 463 | } |
| 464 | |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame] | 465 | unsigned int bt_sock_poll(struct file *file, struct socket *sock, |
| 466 | poll_table *wait) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | { |
| 468 | struct sock *sk = sock->sk; |
| 469 | unsigned int mask = 0; |
| 470 | |
| 471 | BT_DBG("sock %p, sk %p", sock, sk); |
| 472 | |
Eric Dumazet | aa39514 | 2010-04-20 13:03:51 +0000 | [diff] [blame] | 473 | poll_wait(file, sk_sleep(sk), wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | |
| 475 | if (sk->sk_state == BT_LISTEN) |
| 476 | return bt_accept_poll(sk); |
| 477 | |
| 478 | if (sk->sk_err || !skb_queue_empty(&sk->sk_error_queue)) |
Keller, Jacob E | 7d4c04f | 2013-03-28 11:19:25 +0000 | [diff] [blame] | 479 | mask |= POLLERR | |
Jacob Keller | 8facd5f | 2013-04-02 13:55:40 -0700 | [diff] [blame] | 480 | (sock_flag(sk, SOCK_SELECT_ERR_QUEUE) ? POLLPRI : 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | |
Davide Libenzi | f348d70 | 2006-03-25 03:07:39 -0800 | [diff] [blame] | 482 | if (sk->sk_shutdown & RCV_SHUTDOWN) |
Eric Dumazet | db40980 | 2010-09-06 11:13:50 +0000 | [diff] [blame] | 483 | mask |= POLLRDHUP | POLLIN | POLLRDNORM; |
Davide Libenzi | f348d70 | 2006-03-25 03:07:39 -0800 | [diff] [blame] | 484 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | if (sk->sk_shutdown == SHUTDOWN_MASK) |
| 486 | mask |= POLLHUP; |
| 487 | |
Eric Dumazet | db40980 | 2010-09-06 11:13:50 +0000 | [diff] [blame] | 488 | if (!skb_queue_empty(&sk->sk_receive_queue)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | mask |= POLLIN | POLLRDNORM; |
| 490 | |
| 491 | if (sk->sk_state == BT_CLOSED) |
| 492 | mask |= POLLHUP; |
| 493 | |
| 494 | if (sk->sk_state == BT_CONNECT || |
| 495 | sk->sk_state == BT_CONNECT2 || |
| 496 | sk->sk_state == BT_CONFIG) |
| 497 | return mask; |
| 498 | |
Gustavo Padovan | c5daa68 | 2012-05-16 12:17:10 -0300 | [diff] [blame] | 499 | 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] | 500 | mask |= POLLOUT | POLLWRNORM | POLLWRBAND; |
| 501 | else |
Eric Dumazet | 9cd3e07 | 2015-11-29 20:03:10 -0800 | [diff] [blame] | 502 | sk_set_bit(SOCKWQ_ASYNC_NOSPACE, sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | |
| 504 | return mask; |
| 505 | } |
| 506 | EXPORT_SYMBOL(bt_sock_poll); |
| 507 | |
Marcel Holtmann | 3241ad8 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 508 | int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
| 509 | { |
| 510 | struct sock *sk = sock->sk; |
Marcel Holtmann | 43cbeee | 2008-07-14 20:13:51 +0200 | [diff] [blame] | 511 | struct sk_buff *skb; |
| 512 | long amount; |
Marcel Holtmann | 3241ad8 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 513 | int err; |
| 514 | |
| 515 | BT_DBG("sk %p cmd %x arg %lx", sk, cmd, arg); |
| 516 | |
| 517 | switch (cmd) { |
Marcel Holtmann | 43cbeee | 2008-07-14 20:13:51 +0200 | [diff] [blame] | 518 | case TIOCOUTQ: |
| 519 | if (sk->sk_state == BT_LISTEN) |
| 520 | return -EINVAL; |
| 521 | |
Eric Dumazet | 31e6d36 | 2009-06-17 19:05:41 -0700 | [diff] [blame] | 522 | amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk); |
Marcel Holtmann | 43cbeee | 2008-07-14 20:13:51 +0200 | [diff] [blame] | 523 | if (amount < 0) |
| 524 | amount = 0; |
| 525 | err = put_user(amount, (int __user *) arg); |
| 526 | break; |
| 527 | |
| 528 | case TIOCINQ: |
| 529 | if (sk->sk_state == BT_LISTEN) |
| 530 | return -EINVAL; |
| 531 | |
| 532 | lock_sock(sk); |
| 533 | skb = skb_peek(&sk->sk_receive_queue); |
| 534 | amount = skb ? skb->len : 0; |
| 535 | release_sock(sk); |
| 536 | err = put_user(amount, (int __user *) arg); |
| 537 | break; |
| 538 | |
Marcel Holtmann | 3241ad8 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 539 | case SIOCGSTAMP: |
| 540 | err = sock_get_timestamp(sk, (struct timeval __user *) arg); |
| 541 | break; |
| 542 | |
| 543 | case SIOCGSTAMPNS: |
| 544 | err = sock_get_timestampns(sk, (struct timespec __user *) arg); |
| 545 | break; |
| 546 | |
| 547 | default: |
| 548 | err = -ENOIOCTLCMD; |
| 549 | break; |
| 550 | } |
| 551 | |
| 552 | return err; |
| 553 | } |
| 554 | EXPORT_SYMBOL(bt_sock_ioctl); |
| 555 | |
Johan Hedberg | 0fba96f | 2013-09-25 13:26:04 +0300 | [diff] [blame] | 556 | /* This function expects the sk lock to be held when called */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo) |
| 558 | { |
| 559 | DECLARE_WAITQUEUE(wait, current); |
| 560 | int err = 0; |
| 561 | |
| 562 | BT_DBG("sk %p", sk); |
| 563 | |
Eric Dumazet | aa39514 | 2010-04-20 13:03:51 +0000 | [diff] [blame] | 564 | add_wait_queue(sk_sleep(sk), &wait); |
Peter Hurley | 9be4e3f | 2011-07-24 00:10:46 -0400 | [diff] [blame] | 565 | set_current_state(TASK_INTERRUPTIBLE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | while (sk->sk_state != state) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | if (!timeo) { |
Marcel Holtmann | b4c612a | 2006-09-23 09:54:38 +0200 | [diff] [blame] | 568 | err = -EINPROGRESS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | break; |
| 570 | } |
| 571 | |
| 572 | if (signal_pending(current)) { |
| 573 | err = sock_intr_errno(timeo); |
| 574 | break; |
| 575 | } |
| 576 | |
| 577 | release_sock(sk); |
| 578 | timeo = schedule_timeout(timeo); |
| 579 | lock_sock(sk); |
Peter Hurley | 9be4e3f | 2011-07-24 00:10:46 -0400 | [diff] [blame] | 580 | set_current_state(TASK_INTERRUPTIBLE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | |
Benjamin LaHaise | c1cbe4b | 2005-12-13 23:22:19 -0800 | [diff] [blame] | 582 | err = sock_error(sk); |
| 583 | if (err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | } |
Peter Hurley | 9be4e3f | 2011-07-24 00:10:46 -0400 | [diff] [blame] | 586 | __set_current_state(TASK_RUNNING); |
Eric Dumazet | aa39514 | 2010-04-20 13:03:51 +0000 | [diff] [blame] | 587 | remove_wait_queue(sk_sleep(sk), &wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | return err; |
| 589 | } |
| 590 | EXPORT_SYMBOL(bt_sock_wait_state); |
| 591 | |
Johan Hedberg | e793dcf | 2013-09-16 13:05:19 +0300 | [diff] [blame] | 592 | /* This function expects the sk lock to be held when called */ |
| 593 | int bt_sock_wait_ready(struct sock *sk, unsigned long flags) |
| 594 | { |
| 595 | DECLARE_WAITQUEUE(wait, current); |
| 596 | unsigned long timeo; |
| 597 | int err = 0; |
| 598 | |
| 599 | BT_DBG("sk %p", sk); |
| 600 | |
| 601 | timeo = sock_sndtimeo(sk, flags & O_NONBLOCK); |
| 602 | |
| 603 | add_wait_queue(sk_sleep(sk), &wait); |
| 604 | set_current_state(TASK_INTERRUPTIBLE); |
| 605 | while (test_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags)) { |
| 606 | if (!timeo) { |
| 607 | err = -EAGAIN; |
| 608 | break; |
| 609 | } |
| 610 | |
| 611 | if (signal_pending(current)) { |
| 612 | err = sock_intr_errno(timeo); |
| 613 | break; |
| 614 | } |
| 615 | |
| 616 | release_sock(sk); |
| 617 | timeo = schedule_timeout(timeo); |
| 618 | lock_sock(sk); |
| 619 | set_current_state(TASK_INTERRUPTIBLE); |
| 620 | |
| 621 | err = sock_error(sk); |
| 622 | if (err) |
| 623 | break; |
| 624 | } |
| 625 | __set_current_state(TASK_RUNNING); |
| 626 | remove_wait_queue(sk_sleep(sk), &wait); |
| 627 | |
| 628 | return err; |
| 629 | } |
| 630 | EXPORT_SYMBOL(bt_sock_wait_ready); |
| 631 | |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 632 | #ifdef CONFIG_PROC_FS |
| 633 | struct bt_seq_state { |
| 634 | struct bt_sock_list *l; |
| 635 | }; |
| 636 | |
| 637 | static void *bt_seq_start(struct seq_file *seq, loff_t *pos) |
| 638 | __acquires(seq->private->l->lock) |
| 639 | { |
| 640 | struct bt_seq_state *s = seq->private; |
| 641 | struct bt_sock_list *l = s->l; |
| 642 | |
| 643 | read_lock(&l->lock); |
| 644 | return seq_hlist_start_head(&l->head, *pos); |
| 645 | } |
| 646 | |
| 647 | static void *bt_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
| 648 | { |
| 649 | struct bt_seq_state *s = seq->private; |
| 650 | struct bt_sock_list *l = s->l; |
| 651 | |
| 652 | return seq_hlist_next(v, &l->head, pos); |
| 653 | } |
| 654 | |
| 655 | static void bt_seq_stop(struct seq_file *seq, void *v) |
| 656 | __releases(seq->private->l->lock) |
| 657 | { |
| 658 | struct bt_seq_state *s = seq->private; |
| 659 | struct bt_sock_list *l = s->l; |
| 660 | |
| 661 | read_unlock(&l->lock); |
| 662 | } |
| 663 | |
| 664 | static int bt_seq_show(struct seq_file *seq, void *v) |
| 665 | { |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 666 | struct bt_seq_state *s = seq->private; |
| 667 | struct bt_sock_list *l = s->l; |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 668 | |
| 669 | if (v == SEQ_START_TOKEN) { |
Marcel Holtmann | c560575 | 2013-10-14 02:05:25 -0700 | [diff] [blame] | 670 | seq_puts(seq ,"sk RefCnt Rmem Wmem User Inode Parent"); |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 671 | |
| 672 | if (l->custom_seq_show) { |
| 673 | seq_putc(seq, ' '); |
| 674 | l->custom_seq_show(seq, v); |
| 675 | } |
| 676 | |
| 677 | seq_putc(seq, '\n'); |
| 678 | } else { |
Andrei Emeltchenko | 09d5d4a | 2012-08-07 18:05:04 +0300 | [diff] [blame] | 679 | struct sock *sk = sk_entry(v); |
| 680 | struct bt_sock *bt = bt_sk(sk); |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 681 | |
Andrei Emeltchenko | 7028a88 | 2012-09-25 12:49:45 +0300 | [diff] [blame] | 682 | seq_printf(seq, |
Marcel Holtmann | 5f6cd79 | 2013-10-13 10:34:03 -0700 | [diff] [blame] | 683 | "%pK %-6d %-6u %-6u %-6u %-6lu %-6lu", |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 684 | sk, |
| 685 | atomic_read(&sk->sk_refcnt), |
| 686 | sk_rmem_alloc_get(sk), |
| 687 | sk_wmem_alloc_get(sk), |
Eric W. Biederman | 1bbb309 | 2012-10-03 20:32:17 -0700 | [diff] [blame] | 688 | from_kuid(seq_user_ns(seq), sock_i_uid(sk)), |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 689 | sock_i_ino(sk), |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 690 | bt->parent? sock_i_ino(bt->parent): 0LU); |
| 691 | |
| 692 | if (l->custom_seq_show) { |
| 693 | seq_putc(seq, ' '); |
| 694 | l->custom_seq_show(seq, v); |
| 695 | } |
| 696 | |
| 697 | seq_putc(seq, '\n'); |
| 698 | } |
| 699 | return 0; |
| 700 | } |
| 701 | |
Fabian Frederick | 26b0f4e | 2014-06-30 19:26:23 +0200 | [diff] [blame] | 702 | static const struct seq_operations bt_seq_ops = { |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 703 | .start = bt_seq_start, |
| 704 | .next = bt_seq_next, |
| 705 | .stop = bt_seq_stop, |
| 706 | .show = bt_seq_show, |
| 707 | }; |
| 708 | |
| 709 | static int bt_seq_open(struct inode *inode, struct file *file) |
| 710 | { |
| 711 | struct bt_sock_list *sk_list; |
| 712 | struct bt_seq_state *s; |
| 713 | |
Al Viro | d9dda78 | 2013-03-31 18:16:14 -0400 | [diff] [blame] | 714 | sk_list = PDE_DATA(inode); |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 715 | s = __seq_open_private(file, &bt_seq_ops, |
| 716 | sizeof(struct bt_seq_state)); |
Andrei Emeltchenko | 31f4707 | 2012-08-07 18:05:06 +0300 | [diff] [blame] | 717 | if (!s) |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 718 | return -ENOMEM; |
| 719 | |
| 720 | s->l = sk_list; |
| 721 | return 0; |
| 722 | } |
| 723 | |
Al Viro | 1480535 | 2013-04-04 19:12:06 -0400 | [diff] [blame] | 724 | static const struct file_operations bt_fops = { |
| 725 | .open = bt_seq_open, |
| 726 | .read = seq_read, |
| 727 | .llseek = seq_lseek, |
| 728 | .release = seq_release_private |
| 729 | }; |
| 730 | |
Al Viro | b031661 | 2013-04-04 19:14:33 -0400 | [diff] [blame] | 731 | int bt_procfs_init(struct net *net, const char *name, |
Prasanna Karthik | f37590b | 2015-11-17 11:06:53 +0000 | [diff] [blame] | 732 | struct bt_sock_list *sk_list, |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 733 | int (* seq_show)(struct seq_file *, void *)) |
| 734 | { |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 735 | sk_list->custom_seq_show = seq_show; |
| 736 | |
Al Viro | 4d00626 | 2013-04-04 19:16:06 -0400 | [diff] [blame] | 737 | 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] | 738 | return -ENOMEM; |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 739 | return 0; |
| 740 | } |
| 741 | |
| 742 | void bt_procfs_cleanup(struct net *net, const char *name) |
| 743 | { |
Gao feng | ece31ff | 2013-02-18 01:34:56 +0000 | [diff] [blame] | 744 | remove_proc_entry(name, net->proc_net); |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 745 | } |
| 746 | #else |
Al Viro | b031661 | 2013-04-04 19:14:33 -0400 | [diff] [blame] | 747 | int bt_procfs_init(struct net *net, const char *name, |
Prasanna Karthik | f37590b | 2015-11-17 11:06:53 +0000 | [diff] [blame] | 748 | struct bt_sock_list *sk_list, |
Masatake YAMATO | 256a06c | 2012-07-26 01:26:32 +0900 | [diff] [blame] | 749 | int (* seq_show)(struct seq_file *, void *)) |
| 750 | { |
| 751 | return 0; |
| 752 | } |
| 753 | |
| 754 | void bt_procfs_cleanup(struct net *net, const char *name) |
| 755 | { |
| 756 | } |
| 757 | #endif |
| 758 | EXPORT_SYMBOL(bt_procfs_init); |
| 759 | EXPORT_SYMBOL(bt_procfs_cleanup); |
| 760 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | static struct net_proto_family bt_sock_family_ops = { |
| 762 | .owner = THIS_MODULE, |
| 763 | .family = PF_BLUETOOTH, |
| 764 | .create = bt_sock_create, |
| 765 | }; |
| 766 | |
Marcel Holtmann | ffcecac | 2013-10-17 17:24:18 -0700 | [diff] [blame] | 767 | struct dentry *bt_debugfs; |
| 768 | EXPORT_SYMBOL_GPL(bt_debugfs); |
| 769 | |
Marcel Holtmann | 9e8305b | 2016-08-30 05:00:35 +0200 | [diff] [blame] | 770 | #define VERSION __stringify(BT_SUBSYS_VERSION) "." \ |
| 771 | __stringify(BT_SUBSYS_REVISION) |
| 772 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 773 | static int __init bt_init(void) |
| 774 | { |
Marcel Holtmann | 27d3528 | 2006-07-03 10:02:37 +0200 | [diff] [blame] | 775 | int err; |
| 776 | |
Eyal Birger | b4772ef | 2015-03-01 14:58:29 +0200 | [diff] [blame] | 777 | sock_skb_cb_check_size(sizeof(struct bt_skb_cb)); |
Marcel Holtmann | 7cb9d20 | 2014-09-14 22:50:46 +0200 | [diff] [blame] | 778 | |
Marcel Holtmann | 9e8305b | 2016-08-30 05:00:35 +0200 | [diff] [blame] | 779 | BT_INFO("Core ver %s", VERSION); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | |
Marcel Holtmann | ee48529 | 2014-12-29 20:48:35 -0800 | [diff] [blame] | 781 | err = bt_selftest(); |
| 782 | if (err < 0) |
| 783 | return err; |
| 784 | |
Marcel Holtmann | ffcecac | 2013-10-17 17:24:18 -0700 | [diff] [blame] | 785 | bt_debugfs = debugfs_create_dir("bluetooth", NULL); |
| 786 | |
Marcel Holtmann | e64c97b | 2016-07-21 14:12:41 +0200 | [diff] [blame] | 787 | bt_leds_init(); |
| 788 | |
Marcel Holtmann | 27d3528 | 2006-07-03 10:02:37 +0200 | [diff] [blame] | 789 | err = bt_sysfs_init(); |
| 790 | if (err < 0) |
| 791 | return err; |
| 792 | |
| 793 | err = sock_register(&bt_sock_family_ops); |
| 794 | if (err < 0) { |
| 795 | bt_sysfs_cleanup(); |
| 796 | return err; |
| 797 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | |
| 799 | BT_INFO("HCI device and connection manager initialized"); |
| 800 | |
Gustavo F. Padovan | 6427451 | 2011-02-07 20:08:52 -0200 | [diff] [blame] | 801 | err = hci_sock_init(); |
| 802 | if (err < 0) |
| 803 | goto error; |
| 804 | |
| 805 | err = l2cap_init(); |
Anand Gadiyar | 0ed54da | 2011-02-22 12:43:26 +0530 | [diff] [blame] | 806 | if (err < 0) |
Gustavo F. Padovan | 6427451 | 2011-02-07 20:08:52 -0200 | [diff] [blame] | 807 | goto sock_err; |
Gustavo F. Padovan | 6427451 | 2011-02-07 20:08:52 -0200 | [diff] [blame] | 808 | |
| 809 | err = sco_init(); |
| 810 | if (err < 0) { |
| 811 | l2cap_exit(); |
| 812 | goto sock_err; |
| 813 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | |
Johan Hedberg | 6d785aa3 | 2015-03-06 21:08:51 +0200 | [diff] [blame] | 815 | err = mgmt_init(); |
| 816 | if (err < 0) { |
| 817 | sco_exit(); |
| 818 | l2cap_exit(); |
| 819 | goto sock_err; |
| 820 | } |
| 821 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | return 0; |
Gustavo F. Padovan | 6427451 | 2011-02-07 20:08:52 -0200 | [diff] [blame] | 823 | |
| 824 | sock_err: |
| 825 | hci_sock_cleanup(); |
| 826 | |
| 827 | error: |
| 828 | sock_unregister(PF_BLUETOOTH); |
| 829 | bt_sysfs_cleanup(); |
| 830 | |
| 831 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | } |
| 833 | |
| 834 | static void __exit bt_exit(void) |
| 835 | { |
Johan Hedberg | 6d785aa3 | 2015-03-06 21:08:51 +0200 | [diff] [blame] | 836 | mgmt_exit(); |
| 837 | |
Gustavo F. Padovan | 6427451 | 2011-02-07 20:08:52 -0200 | [diff] [blame] | 838 | sco_exit(); |
| 839 | |
| 840 | l2cap_exit(); |
| 841 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | hci_sock_cleanup(); |
| 843 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | sock_unregister(PF_BLUETOOTH); |
Marcel Holtmann | 27d3528 | 2006-07-03 10:02:37 +0200 | [diff] [blame] | 845 | |
| 846 | bt_sysfs_cleanup(); |
Marcel Holtmann | ffcecac | 2013-10-17 17:24:18 -0700 | [diff] [blame] | 847 | |
Marcel Holtmann | e64c97b | 2016-07-21 14:12:41 +0200 | [diff] [blame] | 848 | bt_leds_cleanup(); |
| 849 | |
Marcel Holtmann | ffcecac | 2013-10-17 17:24:18 -0700 | [diff] [blame] | 850 | debugfs_remove_recursive(bt_debugfs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | } |
| 852 | |
| 853 | subsys_initcall(bt_init); |
| 854 | module_exit(bt_exit); |
| 855 | |
Marcel Holtmann | 63fbd24 | 2008-08-18 13:23:53 +0200 | [diff] [blame] | 856 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
Marcel Holtmann | 9e8305b | 2016-08-30 05:00:35 +0200 | [diff] [blame] | 857 | MODULE_DESCRIPTION("Bluetooth Core ver " VERSION); |
| 858 | MODULE_VERSION(VERSION); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | MODULE_LICENSE("GPL"); |
| 860 | MODULE_ALIAS_NETPROTO(PF_BLUETOOTH); |