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 HCI sockets. */ |
| 26 | |
Gustavo Padovan | 8c520a5 | 2012-05-23 04:04:22 -0300 | [diff] [blame] | 27 | #include <linux/export.h> |
Johannes Berg | 787b306 | 2016-01-06 14:38:40 +0100 | [diff] [blame] | 28 | #include <linux/utsname.h> |
Marcel Holtmann | 70ecce9 | 2016-08-27 20:23:38 +0200 | [diff] [blame] | 29 | #include <linux/sched.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include <asm/unaligned.h> |
| 31 | |
| 32 | #include <net/bluetooth/bluetooth.h> |
| 33 | #include <net/bluetooth/hci_core.h> |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 34 | #include <net/bluetooth/hci_mon.h> |
Johan Hedberg | fa4335d | 2015-03-17 13:48:50 +0200 | [diff] [blame] | 35 | #include <net/bluetooth/mgmt.h> |
| 36 | |
| 37 | #include "mgmt_util.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | |
Johan Hedberg | 801c1e8 | 2015-03-06 21:08:50 +0200 | [diff] [blame] | 39 | static LIST_HEAD(mgmt_chan_list); |
| 40 | static DEFINE_MUTEX(mgmt_chan_list_lock); |
| 41 | |
Marcel Holtmann | 70ecce9 | 2016-08-27 20:23:38 +0200 | [diff] [blame] | 42 | static DEFINE_IDA(sock_cookie_ida); |
| 43 | |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 44 | static atomic_t monitor_promisc = ATOMIC_INIT(0); |
| 45 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | /* ----- HCI socket interface ----- */ |
| 47 | |
Marcel Holtmann | 863def5 | 2014-07-11 05:41:00 +0200 | [diff] [blame] | 48 | /* Socket info */ |
| 49 | #define hci_pi(sk) ((struct hci_pinfo *) sk) |
| 50 | |
| 51 | struct hci_pinfo { |
| 52 | struct bt_sock bt; |
| 53 | struct hci_dev *hdev; |
| 54 | struct hci_filter filter; |
| 55 | __u32 cmsg_mask; |
| 56 | unsigned short channel; |
Marcel Holtmann | 6befc64 | 2015-03-14 19:27:53 -0700 | [diff] [blame] | 57 | unsigned long flags; |
Marcel Holtmann | 70ecce9 | 2016-08-27 20:23:38 +0200 | [diff] [blame] | 58 | __u32 cookie; |
| 59 | char comm[TASK_COMM_LEN]; |
Marcel Holtmann | 863def5 | 2014-07-11 05:41:00 +0200 | [diff] [blame] | 60 | }; |
| 61 | |
Tetsuo Handa | 0782c8c | 2021-08-04 19:26:56 +0900 | [diff] [blame] | 62 | static struct hci_dev *hci_hdev_from_sock(struct sock *sk) |
| 63 | { |
| 64 | struct hci_dev *hdev = hci_pi(sk)->hdev; |
| 65 | |
| 66 | if (!hdev) |
| 67 | return ERR_PTR(-EBADFD); |
| 68 | if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) |
| 69 | return ERR_PTR(-EPIPE); |
| 70 | return hdev; |
| 71 | } |
| 72 | |
Marcel Holtmann | 6befc64 | 2015-03-14 19:27:53 -0700 | [diff] [blame] | 73 | void hci_sock_set_flag(struct sock *sk, int nr) |
| 74 | { |
| 75 | set_bit(nr, &hci_pi(sk)->flags); |
| 76 | } |
| 77 | |
| 78 | void hci_sock_clear_flag(struct sock *sk, int nr) |
| 79 | { |
| 80 | clear_bit(nr, &hci_pi(sk)->flags); |
| 81 | } |
| 82 | |
Marcel Holtmann | c85be54 | 2015-03-14 19:28:00 -0700 | [diff] [blame] | 83 | int hci_sock_test_flag(struct sock *sk, int nr) |
| 84 | { |
| 85 | return test_bit(nr, &hci_pi(sk)->flags); |
| 86 | } |
| 87 | |
Johan Hedberg | d0f172b | 2015-03-17 13:48:46 +0200 | [diff] [blame] | 88 | unsigned short hci_sock_get_channel(struct sock *sk) |
| 89 | { |
| 90 | return hci_pi(sk)->channel; |
| 91 | } |
| 92 | |
Marcel Holtmann | 70ecce9 | 2016-08-27 20:23:38 +0200 | [diff] [blame] | 93 | u32 hci_sock_get_cookie(struct sock *sk) |
| 94 | { |
| 95 | return hci_pi(sk)->cookie; |
| 96 | } |
| 97 | |
Marcel Holtmann | df1cb87 | 2016-08-30 05:00:34 +0200 | [diff] [blame] | 98 | static bool hci_sock_gen_cookie(struct sock *sk) |
| 99 | { |
| 100 | int id = hci_pi(sk)->cookie; |
| 101 | |
| 102 | if (!id) { |
| 103 | id = ida_simple_get(&sock_cookie_ida, 1, 0, GFP_KERNEL); |
| 104 | if (id < 0) |
| 105 | id = 0xffffffff; |
| 106 | |
| 107 | hci_pi(sk)->cookie = id; |
| 108 | get_task_comm(hci_pi(sk)->comm, current); |
| 109 | return true; |
| 110 | } |
| 111 | |
| 112 | return false; |
| 113 | } |
| 114 | |
| 115 | static void hci_sock_free_cookie(struct sock *sk) |
| 116 | { |
| 117 | int id = hci_pi(sk)->cookie; |
| 118 | |
| 119 | if (id) { |
| 120 | hci_pi(sk)->cookie = 0xffffffff; |
| 121 | ida_simple_remove(&sock_cookie_ida, id); |
| 122 | } |
| 123 | } |
| 124 | |
Jiri Slaby | 9391976 | 2015-02-19 15:20:43 +0100 | [diff] [blame] | 125 | static inline int hci_test_bit(int nr, const void *addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | { |
Jiri Slaby | 9391976 | 2015-02-19 15:20:43 +0100 | [diff] [blame] | 127 | return *((const __u32 *) addr + (nr >> 5)) & ((__u32) 1 << (nr & 31)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | } |
| 129 | |
| 130 | /* Security filter */ |
Marcel Holtmann | 3ad254f | 2014-07-11 05:36:39 +0200 | [diff] [blame] | 131 | #define HCI_SFLT_MAX_OGF 5 |
| 132 | |
| 133 | struct hci_sec_filter { |
| 134 | __u32 type_mask; |
| 135 | __u32 event_mask[2]; |
| 136 | __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4]; |
| 137 | }; |
| 138 | |
Marcel Holtmann | 7e67c11 | 2014-07-11 05:36:40 +0200 | [diff] [blame] | 139 | static const struct hci_sec_filter hci_sec_filter = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | /* Packet types */ |
| 141 | 0x10, |
| 142 | /* Events */ |
Marcel Holtmann | dd7f552 | 2005-10-28 19:20:53 +0200 | [diff] [blame] | 143 | { 0x1000d9fe, 0x0000b00c }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | /* Commands */ |
| 145 | { |
| 146 | { 0x0 }, |
| 147 | /* OGF_LINK_CTL */ |
Marcel Holtmann | 7c631a6 | 2007-09-09 08:39:43 +0200 | [diff] [blame] | 148 | { 0xbe000006, 0x00000001, 0x00000000, 0x00 }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | /* OGF_LINK_POLICY */ |
Marcel Holtmann | 7c631a6 | 2007-09-09 08:39:43 +0200 | [diff] [blame] | 150 | { 0x00005200, 0x00000000, 0x00000000, 0x00 }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | /* OGF_HOST_CTL */ |
Marcel Holtmann | 7c631a6 | 2007-09-09 08:39:43 +0200 | [diff] [blame] | 152 | { 0xaab00200, 0x2b402aaa, 0x05220154, 0x00 }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | /* OGF_INFO_PARAM */ |
Marcel Holtmann | 7c631a6 | 2007-09-09 08:39:43 +0200 | [diff] [blame] | 154 | { 0x000002be, 0x00000000, 0x00000000, 0x00 }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | /* OGF_STATUS_PARAM */ |
Marcel Holtmann | 7c631a6 | 2007-09-09 08:39:43 +0200 | [diff] [blame] | 156 | { 0x000000ea, 0x00000000, 0x00000000, 0x00 } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | } |
| 158 | }; |
| 159 | |
| 160 | static struct bt_sock_list hci_sk_list = { |
Robert P. J. Day | d5fb296 | 2008-03-28 16:17:38 -0700 | [diff] [blame] | 161 | .lock = __RW_LOCK_UNLOCKED(hci_sk_list.lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | }; |
| 163 | |
Marcel Holtmann | f81fe64 | 2013-08-25 23:25:15 -0700 | [diff] [blame] | 164 | static bool is_filtered_packet(struct sock *sk, struct sk_buff *skb) |
| 165 | { |
| 166 | struct hci_filter *flt; |
| 167 | int flt_type, flt_event; |
| 168 | |
| 169 | /* Apply filter */ |
| 170 | flt = &hci_pi(sk)->filter; |
| 171 | |
Marcel Holtmann | d79f34e | 2015-11-05 07:10:00 +0100 | [diff] [blame] | 172 | flt_type = hci_skb_pkt_type(skb) & HCI_FLT_TYPE_BITS; |
Marcel Holtmann | f81fe64 | 2013-08-25 23:25:15 -0700 | [diff] [blame] | 173 | |
| 174 | if (!test_bit(flt_type, &flt->type_mask)) |
| 175 | return true; |
| 176 | |
| 177 | /* Extra filter for event packets only */ |
Marcel Holtmann | d79f34e | 2015-11-05 07:10:00 +0100 | [diff] [blame] | 178 | if (hci_skb_pkt_type(skb) != HCI_EVENT_PKT) |
Marcel Holtmann | f81fe64 | 2013-08-25 23:25:15 -0700 | [diff] [blame] | 179 | return false; |
| 180 | |
| 181 | flt_event = (*(__u8 *)skb->data & HCI_FLT_EVENT_BITS); |
| 182 | |
| 183 | if (!hci_test_bit(flt_event, &flt->event_mask)) |
| 184 | return true; |
| 185 | |
| 186 | /* Check filter only when opcode is set */ |
| 187 | if (!flt->opcode) |
| 188 | return false; |
| 189 | |
| 190 | if (flt_event == HCI_EV_CMD_COMPLETE && |
| 191 | flt->opcode != get_unaligned((__le16 *)(skb->data + 3))) |
| 192 | return true; |
| 193 | |
| 194 | if (flt_event == HCI_EV_CMD_STATUS && |
| 195 | flt->opcode != get_unaligned((__le16 *)(skb->data + 4))) |
| 196 | return true; |
| 197 | |
| 198 | return false; |
| 199 | } |
| 200 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | /* Send frame to RAW socket */ |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 202 | void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | { |
| 204 | struct sock *sk; |
Marcel Holtmann | e0edf37 | 2012-02-20 14:50:36 +0100 | [diff] [blame] | 205 | struct sk_buff *skb_copy = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | |
| 207 | BT_DBG("hdev %p len %d", hdev, skb->len); |
| 208 | |
| 209 | read_lock(&hci_sk_list.lock); |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 210 | |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 211 | sk_for_each(sk, &hci_sk_list.head) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | struct sk_buff *nskb; |
| 213 | |
| 214 | if (sk->sk_state != BT_BOUND || hci_pi(sk)->hdev != hdev) |
| 215 | continue; |
| 216 | |
| 217 | /* Don't send frame to the socket it came from */ |
| 218 | if (skb->sk == sk) |
| 219 | continue; |
| 220 | |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 221 | if (hci_pi(sk)->channel == HCI_CHANNEL_RAW) { |
Marcel Holtmann | d79f34e | 2015-11-05 07:10:00 +0100 | [diff] [blame] | 222 | if (hci_skb_pkt_type(skb) != HCI_COMMAND_PKT && |
| 223 | hci_skb_pkt_type(skb) != HCI_EVENT_PKT && |
| 224 | hci_skb_pkt_type(skb) != HCI_ACLDATA_PKT && |
| 225 | hci_skb_pkt_type(skb) != HCI_SCODATA_PKT) |
Marcel Holtmann | bb77543 | 2015-10-09 16:13:50 +0200 | [diff] [blame] | 226 | continue; |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 227 | if (is_filtered_packet(sk, skb)) |
| 228 | continue; |
| 229 | } else if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { |
| 230 | if (!bt_cb(skb)->incoming) |
| 231 | continue; |
Marcel Holtmann | d79f34e | 2015-11-05 07:10:00 +0100 | [diff] [blame] | 232 | if (hci_skb_pkt_type(skb) != HCI_EVENT_PKT && |
| 233 | hci_skb_pkt_type(skb) != HCI_ACLDATA_PKT && |
| 234 | hci_skb_pkt_type(skb) != HCI_SCODATA_PKT) |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 235 | continue; |
| 236 | } else { |
| 237 | /* Don't send frame to other channel types */ |
Johan Hedberg | a40c406 | 2010-12-08 00:21:07 +0200 | [diff] [blame] | 238 | continue; |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 239 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | |
Marcel Holtmann | e0edf37 | 2012-02-20 14:50:36 +0100 | [diff] [blame] | 241 | if (!skb_copy) { |
| 242 | /* Create a private copy with headroom */ |
Octavian Purdila | bad93e9 | 2014-06-12 01:36:26 +0300 | [diff] [blame] | 243 | skb_copy = __pskb_copy_fclone(skb, 1, GFP_ATOMIC, true); |
Marcel Holtmann | e0edf37 | 2012-02-20 14:50:36 +0100 | [diff] [blame] | 244 | if (!skb_copy) |
| 245 | continue; |
| 246 | |
| 247 | /* Put type byte before the data */ |
Marcel Holtmann | d79f34e | 2015-11-05 07:10:00 +0100 | [diff] [blame] | 248 | memcpy(skb_push(skb_copy, 1), &hci_skb_pkt_type(skb), 1); |
Marcel Holtmann | e0edf37 | 2012-02-20 14:50:36 +0100 | [diff] [blame] | 249 | } |
| 250 | |
| 251 | nskb = skb_clone(skb_copy, GFP_ATOMIC); |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 252 | if (!nskb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | continue; |
| 254 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | if (sock_queue_rcv_skb(sk, nskb)) |
| 256 | kfree_skb(nskb); |
| 257 | } |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 258 | |
| 259 | read_unlock(&hci_sk_list.lock); |
Marcel Holtmann | e0edf37 | 2012-02-20 14:50:36 +0100 | [diff] [blame] | 260 | |
| 261 | kfree_skb(skb_copy); |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 262 | } |
| 263 | |
Johan Hedberg | 7129069 | 2015-02-20 13:26:23 +0200 | [diff] [blame] | 264 | /* Send frame to sockets with specific channel */ |
| 265 | void hci_send_to_channel(unsigned short channel, struct sk_buff *skb, |
Marcel Holtmann | c08b1a1 | 2015-03-14 19:27:59 -0700 | [diff] [blame] | 266 | int flag, struct sock *skip_sk) |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 267 | { |
| 268 | struct sock *sk; |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 269 | |
Johan Hedberg | 7129069 | 2015-02-20 13:26:23 +0200 | [diff] [blame] | 270 | BT_DBG("channel %u len %d", channel, skb->len); |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 271 | |
| 272 | read_lock(&hci_sk_list.lock); |
| 273 | |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 274 | sk_for_each(sk, &hci_sk_list.head) { |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 275 | struct sk_buff *nskb; |
| 276 | |
Marcel Holtmann | c08b1a1 | 2015-03-14 19:27:59 -0700 | [diff] [blame] | 277 | /* Ignore socket without the flag set */ |
Marcel Holtmann | c85be54 | 2015-03-14 19:28:00 -0700 | [diff] [blame] | 278 | if (!hci_sock_test_flag(sk, flag)) |
Marcel Holtmann | c08b1a1 | 2015-03-14 19:27:59 -0700 | [diff] [blame] | 279 | continue; |
| 280 | |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 281 | /* Skip the original socket */ |
| 282 | if (sk == skip_sk) |
| 283 | continue; |
| 284 | |
| 285 | if (sk->sk_state != BT_BOUND) |
| 286 | continue; |
| 287 | |
Johan Hedberg | 7129069 | 2015-02-20 13:26:23 +0200 | [diff] [blame] | 288 | if (hci_pi(sk)->channel != channel) |
Marcel Holtmann | d7f72f6 | 2015-01-11 19:33:32 -0800 | [diff] [blame] | 289 | continue; |
| 290 | |
| 291 | nskb = skb_clone(skb, GFP_ATOMIC); |
| 292 | if (!nskb) |
| 293 | continue; |
| 294 | |
| 295 | if (sock_queue_rcv_skb(sk, nskb)) |
| 296 | kfree_skb(nskb); |
| 297 | } |
| 298 | |
| 299 | read_unlock(&hci_sk_list.lock); |
| 300 | } |
| 301 | |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 302 | /* Send frame to monitor socket */ |
| 303 | void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb) |
| 304 | { |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 305 | struct sk_buff *skb_copy = NULL; |
Marcel Holtmann | 2b53129 | 2015-01-11 19:33:31 -0800 | [diff] [blame] | 306 | struct hci_mon_hdr *hdr; |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 307 | __le16 opcode; |
| 308 | |
| 309 | if (!atomic_read(&monitor_promisc)) |
| 310 | return; |
| 311 | |
| 312 | BT_DBG("hdev %p len %d", hdev, skb->len); |
| 313 | |
Marcel Holtmann | d79f34e | 2015-11-05 07:10:00 +0100 | [diff] [blame] | 314 | switch (hci_skb_pkt_type(skb)) { |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 315 | case HCI_COMMAND_PKT: |
Joe Perches | dcf4adb | 2014-03-12 10:52:35 -0700 | [diff] [blame] | 316 | opcode = cpu_to_le16(HCI_MON_COMMAND_PKT); |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 317 | break; |
| 318 | case HCI_EVENT_PKT: |
Joe Perches | dcf4adb | 2014-03-12 10:52:35 -0700 | [diff] [blame] | 319 | opcode = cpu_to_le16(HCI_MON_EVENT_PKT); |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 320 | break; |
| 321 | case HCI_ACLDATA_PKT: |
| 322 | if (bt_cb(skb)->incoming) |
Joe Perches | dcf4adb | 2014-03-12 10:52:35 -0700 | [diff] [blame] | 323 | opcode = cpu_to_le16(HCI_MON_ACL_RX_PKT); |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 324 | else |
Joe Perches | dcf4adb | 2014-03-12 10:52:35 -0700 | [diff] [blame] | 325 | opcode = cpu_to_le16(HCI_MON_ACL_TX_PKT); |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 326 | break; |
| 327 | case HCI_SCODATA_PKT: |
| 328 | if (bt_cb(skb)->incoming) |
Joe Perches | dcf4adb | 2014-03-12 10:52:35 -0700 | [diff] [blame] | 329 | opcode = cpu_to_le16(HCI_MON_SCO_RX_PKT); |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 330 | else |
Joe Perches | dcf4adb | 2014-03-12 10:52:35 -0700 | [diff] [blame] | 331 | opcode = cpu_to_le16(HCI_MON_SCO_TX_PKT); |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 332 | break; |
Marcel Holtmann | e875ff8 | 2015-10-07 16:38:35 +0200 | [diff] [blame] | 333 | case HCI_DIAG_PKT: |
| 334 | opcode = cpu_to_le16(HCI_MON_VENDOR_DIAG); |
| 335 | break; |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 336 | default: |
| 337 | return; |
| 338 | } |
| 339 | |
Marcel Holtmann | 2b53129 | 2015-01-11 19:33:31 -0800 | [diff] [blame] | 340 | /* Create a private copy with headroom */ |
| 341 | skb_copy = __pskb_copy_fclone(skb, HCI_MON_HDR_SIZE, GFP_ATOMIC, true); |
| 342 | if (!skb_copy) |
| 343 | return; |
| 344 | |
| 345 | /* Put header before the data */ |
Johannes Berg | d58ff35 | 2017-06-16 14:29:23 +0200 | [diff] [blame] | 346 | hdr = skb_push(skb_copy, HCI_MON_HDR_SIZE); |
Marcel Holtmann | 2b53129 | 2015-01-11 19:33:31 -0800 | [diff] [blame] | 347 | hdr->opcode = opcode; |
| 348 | hdr->index = cpu_to_le16(hdev->id); |
| 349 | hdr->len = cpu_to_le16(skb->len); |
| 350 | |
Marcel Holtmann | c08b1a1 | 2015-03-14 19:27:59 -0700 | [diff] [blame] | 351 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb_copy, |
| 352 | HCI_SOCK_TRUSTED, NULL); |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 353 | kfree_skb(skb_copy); |
| 354 | } |
| 355 | |
Marcel Holtmann | 38ceaa0 | 2016-08-27 20:23:41 +0200 | [diff] [blame] | 356 | void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event, |
| 357 | void *data, u16 data_len, ktime_t tstamp, |
| 358 | int flag, struct sock *skip_sk) |
| 359 | { |
| 360 | struct sock *sk; |
| 361 | __le16 index; |
| 362 | |
| 363 | if (hdev) |
| 364 | index = cpu_to_le16(hdev->id); |
| 365 | else |
| 366 | index = cpu_to_le16(MGMT_INDEX_NONE); |
| 367 | |
| 368 | read_lock(&hci_sk_list.lock); |
| 369 | |
| 370 | sk_for_each(sk, &hci_sk_list.head) { |
| 371 | struct hci_mon_hdr *hdr; |
| 372 | struct sk_buff *skb; |
| 373 | |
| 374 | if (hci_pi(sk)->channel != HCI_CHANNEL_CONTROL) |
| 375 | continue; |
| 376 | |
| 377 | /* Ignore socket without the flag set */ |
| 378 | if (!hci_sock_test_flag(sk, flag)) |
| 379 | continue; |
| 380 | |
| 381 | /* Skip the original socket */ |
| 382 | if (sk == skip_sk) |
| 383 | continue; |
| 384 | |
| 385 | skb = bt_skb_alloc(6 + data_len, GFP_ATOMIC); |
| 386 | if (!skb) |
| 387 | continue; |
| 388 | |
| 389 | put_unaligned_le32(hci_pi(sk)->cookie, skb_put(skb, 4)); |
| 390 | put_unaligned_le16(event, skb_put(skb, 2)); |
| 391 | |
| 392 | if (data) |
Johannes Berg | 59ae1d1 | 2017-06-16 14:29:20 +0200 | [diff] [blame] | 393 | skb_put_data(skb, data, data_len); |
Marcel Holtmann | 38ceaa0 | 2016-08-27 20:23:41 +0200 | [diff] [blame] | 394 | |
| 395 | skb->tstamp = tstamp; |
| 396 | |
Johannes Berg | d58ff35 | 2017-06-16 14:29:23 +0200 | [diff] [blame] | 397 | hdr = skb_push(skb, HCI_MON_HDR_SIZE); |
Marcel Holtmann | 38ceaa0 | 2016-08-27 20:23:41 +0200 | [diff] [blame] | 398 | hdr->opcode = cpu_to_le16(HCI_MON_CTRL_EVENT); |
| 399 | hdr->index = index; |
| 400 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); |
| 401 | |
| 402 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, |
| 403 | HCI_SOCK_TRUSTED, NULL); |
| 404 | kfree_skb(skb); |
| 405 | } |
| 406 | |
| 407 | read_unlock(&hci_sk_list.lock); |
| 408 | } |
| 409 | |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 410 | static struct sk_buff *create_monitor_event(struct hci_dev *hdev, int event) |
| 411 | { |
| 412 | struct hci_mon_hdr *hdr; |
| 413 | struct hci_mon_new_index *ni; |
Marcel Holtmann | 6c566dd | 2015-10-07 15:32:13 +0200 | [diff] [blame] | 414 | struct hci_mon_index_info *ii; |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 415 | struct sk_buff *skb; |
| 416 | __le16 opcode; |
| 417 | |
| 418 | switch (event) { |
| 419 | case HCI_DEV_REG: |
| 420 | skb = bt_skb_alloc(HCI_MON_NEW_INDEX_SIZE, GFP_ATOMIC); |
| 421 | if (!skb) |
| 422 | return NULL; |
| 423 | |
Johannes Berg | 4df864c | 2017-06-16 14:29:21 +0200 | [diff] [blame] | 424 | ni = skb_put(skb, HCI_MON_NEW_INDEX_SIZE); |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 425 | ni->type = hdev->dev_type; |
| 426 | ni->bus = hdev->bus; |
| 427 | bacpy(&ni->bdaddr, &hdev->bdaddr); |
| 428 | memcpy(ni->name, hdev->name, 8); |
| 429 | |
Joe Perches | dcf4adb | 2014-03-12 10:52:35 -0700 | [diff] [blame] | 430 | opcode = cpu_to_le16(HCI_MON_NEW_INDEX); |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 431 | break; |
| 432 | |
| 433 | case HCI_DEV_UNREG: |
| 434 | skb = bt_skb_alloc(0, GFP_ATOMIC); |
| 435 | if (!skb) |
| 436 | return NULL; |
| 437 | |
Joe Perches | dcf4adb | 2014-03-12 10:52:35 -0700 | [diff] [blame] | 438 | opcode = cpu_to_le16(HCI_MON_DEL_INDEX); |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 439 | break; |
| 440 | |
Marcel Holtmann | e131d74 | 2015-10-20 02:30:47 +0200 | [diff] [blame] | 441 | case HCI_DEV_SETUP: |
| 442 | if (hdev->manufacturer == 0xffff) |
| 443 | return NULL; |
| 444 | |
| 445 | /* fall through */ |
| 446 | |
Marcel Holtmann | 6c566dd | 2015-10-07 15:32:13 +0200 | [diff] [blame] | 447 | case HCI_DEV_UP: |
| 448 | skb = bt_skb_alloc(HCI_MON_INDEX_INFO_SIZE, GFP_ATOMIC); |
| 449 | if (!skb) |
| 450 | return NULL; |
| 451 | |
Johannes Berg | 4df864c | 2017-06-16 14:29:21 +0200 | [diff] [blame] | 452 | ii = skb_put(skb, HCI_MON_INDEX_INFO_SIZE); |
Marcel Holtmann | 6c566dd | 2015-10-07 15:32:13 +0200 | [diff] [blame] | 453 | bacpy(&ii->bdaddr, &hdev->bdaddr); |
| 454 | ii->manufacturer = cpu_to_le16(hdev->manufacturer); |
| 455 | |
| 456 | opcode = cpu_to_le16(HCI_MON_INDEX_INFO); |
| 457 | break; |
| 458 | |
Marcel Holtmann | 22db3cbc | 2015-10-04 23:34:03 +0200 | [diff] [blame] | 459 | case HCI_DEV_OPEN: |
| 460 | skb = bt_skb_alloc(0, GFP_ATOMIC); |
| 461 | if (!skb) |
| 462 | return NULL; |
| 463 | |
| 464 | opcode = cpu_to_le16(HCI_MON_OPEN_INDEX); |
| 465 | break; |
| 466 | |
| 467 | case HCI_DEV_CLOSE: |
| 468 | skb = bt_skb_alloc(0, GFP_ATOMIC); |
| 469 | if (!skb) |
| 470 | return NULL; |
| 471 | |
| 472 | opcode = cpu_to_le16(HCI_MON_CLOSE_INDEX); |
| 473 | break; |
| 474 | |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 475 | default: |
| 476 | return NULL; |
| 477 | } |
| 478 | |
| 479 | __net_timestamp(skb); |
| 480 | |
Johannes Berg | d58ff35 | 2017-06-16 14:29:23 +0200 | [diff] [blame] | 481 | hdr = skb_push(skb, HCI_MON_HDR_SIZE); |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 482 | hdr->opcode = opcode; |
| 483 | hdr->index = cpu_to_le16(hdev->id); |
| 484 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); |
| 485 | |
| 486 | return skb; |
| 487 | } |
| 488 | |
Marcel Holtmann | 249fa16 | 2016-08-27 20:23:40 +0200 | [diff] [blame] | 489 | static struct sk_buff *create_monitor_ctrl_open(struct sock *sk) |
| 490 | { |
| 491 | struct hci_mon_hdr *hdr; |
| 492 | struct sk_buff *skb; |
Marcel Holtmann | d0bef1d | 2016-08-30 05:00:38 +0200 | [diff] [blame] | 493 | u16 format; |
Marcel Holtmann | 249fa16 | 2016-08-27 20:23:40 +0200 | [diff] [blame] | 494 | u8 ver[3]; |
| 495 | u32 flags; |
| 496 | |
Marcel Holtmann | 0ef2c42 | 2016-08-30 05:00:36 +0200 | [diff] [blame] | 497 | /* No message needed when cookie is not present */ |
| 498 | if (!hci_pi(sk)->cookie) |
| 499 | return NULL; |
| 500 | |
Marcel Holtmann | d0bef1d | 2016-08-30 05:00:38 +0200 | [diff] [blame] | 501 | switch (hci_pi(sk)->channel) { |
Marcel Holtmann | f81f5b2 | 2016-08-30 05:00:39 +0200 | [diff] [blame] | 502 | case HCI_CHANNEL_RAW: |
| 503 | format = 0x0000; |
| 504 | ver[0] = BT_SUBSYS_VERSION; |
| 505 | put_unaligned_le16(BT_SUBSYS_REVISION, ver + 1); |
| 506 | break; |
Marcel Holtmann | aa1638d | 2016-09-01 19:48:28 +0200 | [diff] [blame] | 507 | case HCI_CHANNEL_USER: |
| 508 | format = 0x0001; |
| 509 | ver[0] = BT_SUBSYS_VERSION; |
| 510 | put_unaligned_le16(BT_SUBSYS_REVISION, ver + 1); |
| 511 | break; |
Marcel Holtmann | d0bef1d | 2016-08-30 05:00:38 +0200 | [diff] [blame] | 512 | case HCI_CHANNEL_CONTROL: |
| 513 | format = 0x0002; |
| 514 | mgmt_fill_version_info(ver); |
| 515 | break; |
| 516 | default: |
| 517 | /* No message for unsupported format */ |
| 518 | return NULL; |
| 519 | } |
| 520 | |
Marcel Holtmann | 249fa16 | 2016-08-27 20:23:40 +0200 | [diff] [blame] | 521 | skb = bt_skb_alloc(14 + TASK_COMM_LEN , GFP_ATOMIC); |
| 522 | if (!skb) |
| 523 | return NULL; |
| 524 | |
Marcel Holtmann | 249fa16 | 2016-08-27 20:23:40 +0200 | [diff] [blame] | 525 | flags = hci_sock_test_flag(sk, HCI_SOCK_TRUSTED) ? 0x1 : 0x0; |
| 526 | |
| 527 | put_unaligned_le32(hci_pi(sk)->cookie, skb_put(skb, 4)); |
| 528 | put_unaligned_le16(format, skb_put(skb, 2)); |
Johannes Berg | 59ae1d1 | 2017-06-16 14:29:20 +0200 | [diff] [blame] | 529 | skb_put_data(skb, ver, sizeof(ver)); |
Marcel Holtmann | 249fa16 | 2016-08-27 20:23:40 +0200 | [diff] [blame] | 530 | put_unaligned_le32(flags, skb_put(skb, 4)); |
Johannes Berg | 634fef6 | 2017-06-16 14:29:24 +0200 | [diff] [blame] | 531 | skb_put_u8(skb, TASK_COMM_LEN); |
Johannes Berg | 59ae1d1 | 2017-06-16 14:29:20 +0200 | [diff] [blame] | 532 | skb_put_data(skb, hci_pi(sk)->comm, TASK_COMM_LEN); |
Marcel Holtmann | 249fa16 | 2016-08-27 20:23:40 +0200 | [diff] [blame] | 533 | |
| 534 | __net_timestamp(skb); |
| 535 | |
Johannes Berg | d58ff35 | 2017-06-16 14:29:23 +0200 | [diff] [blame] | 536 | hdr = skb_push(skb, HCI_MON_HDR_SIZE); |
Marcel Holtmann | 249fa16 | 2016-08-27 20:23:40 +0200 | [diff] [blame] | 537 | hdr->opcode = cpu_to_le16(HCI_MON_CTRL_OPEN); |
Marcel Holtmann | 0ef2c42 | 2016-08-30 05:00:36 +0200 | [diff] [blame] | 538 | if (hci_pi(sk)->hdev) |
| 539 | hdr->index = cpu_to_le16(hci_pi(sk)->hdev->id); |
| 540 | else |
| 541 | hdr->index = cpu_to_le16(HCI_DEV_NONE); |
Marcel Holtmann | 249fa16 | 2016-08-27 20:23:40 +0200 | [diff] [blame] | 542 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); |
| 543 | |
| 544 | return skb; |
| 545 | } |
| 546 | |
| 547 | static struct sk_buff *create_monitor_ctrl_close(struct sock *sk) |
| 548 | { |
| 549 | struct hci_mon_hdr *hdr; |
| 550 | struct sk_buff *skb; |
| 551 | |
Marcel Holtmann | 0ef2c42 | 2016-08-30 05:00:36 +0200 | [diff] [blame] | 552 | /* No message needed when cookie is not present */ |
| 553 | if (!hci_pi(sk)->cookie) |
| 554 | return NULL; |
| 555 | |
Marcel Holtmann | d0bef1d | 2016-08-30 05:00:38 +0200 | [diff] [blame] | 556 | switch (hci_pi(sk)->channel) { |
Marcel Holtmann | f81f5b2 | 2016-08-30 05:00:39 +0200 | [diff] [blame] | 557 | case HCI_CHANNEL_RAW: |
Marcel Holtmann | aa1638d | 2016-09-01 19:48:28 +0200 | [diff] [blame] | 558 | case HCI_CHANNEL_USER: |
Marcel Holtmann | d0bef1d | 2016-08-30 05:00:38 +0200 | [diff] [blame] | 559 | case HCI_CHANNEL_CONTROL: |
| 560 | break; |
| 561 | default: |
| 562 | /* No message for unsupported format */ |
| 563 | return NULL; |
| 564 | } |
| 565 | |
Marcel Holtmann | 249fa16 | 2016-08-27 20:23:40 +0200 | [diff] [blame] | 566 | skb = bt_skb_alloc(4, GFP_ATOMIC); |
| 567 | if (!skb) |
| 568 | return NULL; |
| 569 | |
| 570 | put_unaligned_le32(hci_pi(sk)->cookie, skb_put(skb, 4)); |
| 571 | |
| 572 | __net_timestamp(skb); |
| 573 | |
Johannes Berg | d58ff35 | 2017-06-16 14:29:23 +0200 | [diff] [blame] | 574 | hdr = skb_push(skb, HCI_MON_HDR_SIZE); |
Marcel Holtmann | 249fa16 | 2016-08-27 20:23:40 +0200 | [diff] [blame] | 575 | hdr->opcode = cpu_to_le16(HCI_MON_CTRL_CLOSE); |
Marcel Holtmann | 0ef2c42 | 2016-08-30 05:00:36 +0200 | [diff] [blame] | 576 | if (hci_pi(sk)->hdev) |
| 577 | hdr->index = cpu_to_le16(hci_pi(sk)->hdev->id); |
| 578 | else |
| 579 | hdr->index = cpu_to_le16(HCI_DEV_NONE); |
Marcel Holtmann | 249fa16 | 2016-08-27 20:23:40 +0200 | [diff] [blame] | 580 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); |
| 581 | |
| 582 | return skb; |
| 583 | } |
| 584 | |
Marcel Holtmann | 38ceaa0 | 2016-08-27 20:23:41 +0200 | [diff] [blame] | 585 | static struct sk_buff *create_monitor_ctrl_command(struct sock *sk, u16 index, |
| 586 | u16 opcode, u16 len, |
| 587 | const void *buf) |
| 588 | { |
| 589 | struct hci_mon_hdr *hdr; |
| 590 | struct sk_buff *skb; |
| 591 | |
| 592 | skb = bt_skb_alloc(6 + len, GFP_ATOMIC); |
| 593 | if (!skb) |
| 594 | return NULL; |
| 595 | |
| 596 | put_unaligned_le32(hci_pi(sk)->cookie, skb_put(skb, 4)); |
| 597 | put_unaligned_le16(opcode, skb_put(skb, 2)); |
| 598 | |
| 599 | if (buf) |
Johannes Berg | 59ae1d1 | 2017-06-16 14:29:20 +0200 | [diff] [blame] | 600 | skb_put_data(skb, buf, len); |
Marcel Holtmann | 38ceaa0 | 2016-08-27 20:23:41 +0200 | [diff] [blame] | 601 | |
| 602 | __net_timestamp(skb); |
| 603 | |
Johannes Berg | d58ff35 | 2017-06-16 14:29:23 +0200 | [diff] [blame] | 604 | hdr = skb_push(skb, HCI_MON_HDR_SIZE); |
Marcel Holtmann | 38ceaa0 | 2016-08-27 20:23:41 +0200 | [diff] [blame] | 605 | hdr->opcode = cpu_to_le16(HCI_MON_CTRL_COMMAND); |
| 606 | hdr->index = cpu_to_le16(index); |
| 607 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); |
| 608 | |
| 609 | return skb; |
| 610 | } |
| 611 | |
Johannes Berg | 787b306 | 2016-01-06 14:38:40 +0100 | [diff] [blame] | 612 | static void __printf(2, 3) |
| 613 | send_monitor_note(struct sock *sk, const char *fmt, ...) |
Marcel Holtmann | dd31506 | 2015-11-08 07:47:12 +0100 | [diff] [blame] | 614 | { |
Johannes Berg | 787b306 | 2016-01-06 14:38:40 +0100 | [diff] [blame] | 615 | size_t len; |
Marcel Holtmann | dd31506 | 2015-11-08 07:47:12 +0100 | [diff] [blame] | 616 | struct hci_mon_hdr *hdr; |
| 617 | struct sk_buff *skb; |
Johannes Berg | 787b306 | 2016-01-06 14:38:40 +0100 | [diff] [blame] | 618 | va_list args; |
| 619 | |
| 620 | va_start(args, fmt); |
| 621 | len = vsnprintf(NULL, 0, fmt, args); |
| 622 | va_end(args); |
Marcel Holtmann | dd31506 | 2015-11-08 07:47:12 +0100 | [diff] [blame] | 623 | |
| 624 | skb = bt_skb_alloc(len + 1, GFP_ATOMIC); |
| 625 | if (!skb) |
| 626 | return; |
| 627 | |
Johannes Berg | 787b306 | 2016-01-06 14:38:40 +0100 | [diff] [blame] | 628 | va_start(args, fmt); |
| 629 | vsprintf(skb_put(skb, len), fmt, args); |
Johannes Berg | 4df864c | 2017-06-16 14:29:21 +0200 | [diff] [blame] | 630 | *(u8 *)skb_put(skb, 1) = 0; |
Johannes Berg | 787b306 | 2016-01-06 14:38:40 +0100 | [diff] [blame] | 631 | va_end(args); |
Marcel Holtmann | dd31506 | 2015-11-08 07:47:12 +0100 | [diff] [blame] | 632 | |
| 633 | __net_timestamp(skb); |
| 634 | |
| 635 | hdr = (void *)skb_push(skb, HCI_MON_HDR_SIZE); |
| 636 | hdr->opcode = cpu_to_le16(HCI_MON_SYSTEM_NOTE); |
| 637 | hdr->index = cpu_to_le16(HCI_DEV_NONE); |
| 638 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); |
| 639 | |
| 640 | if (sock_queue_rcv_skb(sk, skb)) |
| 641 | kfree_skb(skb); |
| 642 | } |
| 643 | |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 644 | static void send_monitor_replay(struct sock *sk) |
| 645 | { |
| 646 | struct hci_dev *hdev; |
| 647 | |
| 648 | read_lock(&hci_dev_list_lock); |
| 649 | |
| 650 | list_for_each_entry(hdev, &hci_dev_list, list) { |
| 651 | struct sk_buff *skb; |
| 652 | |
| 653 | skb = create_monitor_event(hdev, HCI_DEV_REG); |
| 654 | if (!skb) |
| 655 | continue; |
| 656 | |
| 657 | if (sock_queue_rcv_skb(sk, skb)) |
| 658 | kfree_skb(skb); |
Marcel Holtmann | 22db3cbc | 2015-10-04 23:34:03 +0200 | [diff] [blame] | 659 | |
| 660 | if (!test_bit(HCI_RUNNING, &hdev->flags)) |
| 661 | continue; |
| 662 | |
| 663 | skb = create_monitor_event(hdev, HCI_DEV_OPEN); |
| 664 | if (!skb) |
| 665 | continue; |
| 666 | |
| 667 | if (sock_queue_rcv_skb(sk, skb)) |
| 668 | kfree_skb(skb); |
Marcel Holtmann | 6c566dd | 2015-10-07 15:32:13 +0200 | [diff] [blame] | 669 | |
Marcel Holtmann | e131d74 | 2015-10-20 02:30:47 +0200 | [diff] [blame] | 670 | if (test_bit(HCI_UP, &hdev->flags)) |
| 671 | skb = create_monitor_event(hdev, HCI_DEV_UP); |
| 672 | else if (hci_dev_test_flag(hdev, HCI_SETUP)) |
| 673 | skb = create_monitor_event(hdev, HCI_DEV_SETUP); |
| 674 | else |
| 675 | skb = NULL; |
Marcel Holtmann | 6c566dd | 2015-10-07 15:32:13 +0200 | [diff] [blame] | 676 | |
Marcel Holtmann | e131d74 | 2015-10-20 02:30:47 +0200 | [diff] [blame] | 677 | if (skb) { |
| 678 | if (sock_queue_rcv_skb(sk, skb)) |
| 679 | kfree_skb(skb); |
| 680 | } |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 681 | } |
| 682 | |
| 683 | read_unlock(&hci_dev_list_lock); |
| 684 | } |
| 685 | |
Marcel Holtmann | 249fa16 | 2016-08-27 20:23:40 +0200 | [diff] [blame] | 686 | static void send_monitor_control_replay(struct sock *mon_sk) |
| 687 | { |
| 688 | struct sock *sk; |
| 689 | |
| 690 | read_lock(&hci_sk_list.lock); |
| 691 | |
| 692 | sk_for_each(sk, &hci_sk_list.head) { |
| 693 | struct sk_buff *skb; |
| 694 | |
Marcel Holtmann | 249fa16 | 2016-08-27 20:23:40 +0200 | [diff] [blame] | 695 | skb = create_monitor_ctrl_open(sk); |
| 696 | if (!skb) |
| 697 | continue; |
| 698 | |
| 699 | if (sock_queue_rcv_skb(mon_sk, skb)) |
| 700 | kfree_skb(skb); |
| 701 | } |
| 702 | |
| 703 | read_unlock(&hci_sk_list.lock); |
| 704 | } |
| 705 | |
Marcel Holtmann | 040030e | 2012-02-20 14:50:37 +0100 | [diff] [blame] | 706 | /* Generate internal stack event */ |
| 707 | static void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data) |
| 708 | { |
| 709 | struct hci_event_hdr *hdr; |
| 710 | struct hci_ev_stack_internal *ev; |
| 711 | struct sk_buff *skb; |
| 712 | |
| 713 | skb = bt_skb_alloc(HCI_EVENT_HDR_SIZE + sizeof(*ev) + dlen, GFP_ATOMIC); |
| 714 | if (!skb) |
| 715 | return; |
| 716 | |
Johannes Berg | 4df864c | 2017-06-16 14:29:21 +0200 | [diff] [blame] | 717 | hdr = skb_put(skb, HCI_EVENT_HDR_SIZE); |
Marcel Holtmann | 040030e | 2012-02-20 14:50:37 +0100 | [diff] [blame] | 718 | hdr->evt = HCI_EV_STACK_INTERNAL; |
| 719 | hdr->plen = sizeof(*ev) + dlen; |
| 720 | |
Johannes Berg | 4df864c | 2017-06-16 14:29:21 +0200 | [diff] [blame] | 721 | ev = skb_put(skb, sizeof(*ev) + dlen); |
Marcel Holtmann | 040030e | 2012-02-20 14:50:37 +0100 | [diff] [blame] | 722 | ev->type = type; |
| 723 | memcpy(ev->data, data, dlen); |
| 724 | |
| 725 | bt_cb(skb)->incoming = 1; |
| 726 | __net_timestamp(skb); |
| 727 | |
Marcel Holtmann | d79f34e | 2015-11-05 07:10:00 +0100 | [diff] [blame] | 728 | hci_skb_pkt_type(skb) = HCI_EVENT_PKT; |
Marcel Holtmann | 040030e | 2012-02-20 14:50:37 +0100 | [diff] [blame] | 729 | hci_send_to_sock(hdev, skb); |
| 730 | kfree_skb(skb); |
| 731 | } |
| 732 | |
| 733 | void hci_sock_dev_event(struct hci_dev *hdev, int event) |
| 734 | { |
Marcel Holtmann | 040030e | 2012-02-20 14:50:37 +0100 | [diff] [blame] | 735 | BT_DBG("hdev %s event %d", hdev->name, event); |
| 736 | |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 737 | if (atomic_read(&monitor_promisc)) { |
| 738 | struct sk_buff *skb; |
| 739 | |
Marcel Holtmann | ed1b28a | 2015-10-04 23:33:59 +0200 | [diff] [blame] | 740 | /* Send event to monitor */ |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 741 | skb = create_monitor_event(hdev, event); |
| 742 | if (skb) { |
Marcel Holtmann | c08b1a1 | 2015-03-14 19:27:59 -0700 | [diff] [blame] | 743 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, |
| 744 | HCI_SOCK_TRUSTED, NULL); |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 745 | kfree_skb(skb); |
| 746 | } |
| 747 | } |
| 748 | |
Marcel Holtmann | ed1b28a | 2015-10-04 23:33:59 +0200 | [diff] [blame] | 749 | if (event <= HCI_DEV_DOWN) { |
| 750 | struct hci_ev_si_device ev; |
| 751 | |
| 752 | /* Send event to sockets */ |
| 753 | ev.event = event; |
| 754 | ev.dev_id = hdev->id; |
| 755 | hci_si_event(NULL, HCI_EV_SI_DEVICE, sizeof(ev), &ev); |
| 756 | } |
Marcel Holtmann | 040030e | 2012-02-20 14:50:37 +0100 | [diff] [blame] | 757 | |
| 758 | if (event == HCI_DEV_UNREG) { |
| 759 | struct sock *sk; |
Marcel Holtmann | 040030e | 2012-02-20 14:50:37 +0100 | [diff] [blame] | 760 | |
Tetsuo Handa | 0782c8c | 2021-08-04 19:26:56 +0900 | [diff] [blame] | 761 | /* Wake up sockets using this dead device */ |
Marcel Holtmann | 040030e | 2012-02-20 14:50:37 +0100 | [diff] [blame] | 762 | read_lock(&hci_sk_list.lock); |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 763 | sk_for_each(sk, &hci_sk_list.head) { |
Marcel Holtmann | 040030e | 2012-02-20 14:50:37 +0100 | [diff] [blame] | 764 | if (hci_pi(sk)->hdev == hdev) { |
Marcel Holtmann | 040030e | 2012-02-20 14:50:37 +0100 | [diff] [blame] | 765 | sk->sk_err = EPIPE; |
Marcel Holtmann | 040030e | 2012-02-20 14:50:37 +0100 | [diff] [blame] | 766 | sk->sk_state_change(sk); |
Marcel Holtmann | 040030e | 2012-02-20 14:50:37 +0100 | [diff] [blame] | 767 | } |
Marcel Holtmann | 040030e | 2012-02-20 14:50:37 +0100 | [diff] [blame] | 768 | } |
| 769 | read_unlock(&hci_sk_list.lock); |
| 770 | } |
| 771 | } |
| 772 | |
Johan Hedberg | 801c1e8 | 2015-03-06 21:08:50 +0200 | [diff] [blame] | 773 | static struct hci_mgmt_chan *__hci_mgmt_chan_find(unsigned short channel) |
| 774 | { |
| 775 | struct hci_mgmt_chan *c; |
| 776 | |
| 777 | list_for_each_entry(c, &mgmt_chan_list, list) { |
| 778 | if (c->channel == channel) |
| 779 | return c; |
| 780 | } |
| 781 | |
| 782 | return NULL; |
| 783 | } |
| 784 | |
| 785 | static struct hci_mgmt_chan *hci_mgmt_chan_find(unsigned short channel) |
| 786 | { |
| 787 | struct hci_mgmt_chan *c; |
| 788 | |
| 789 | mutex_lock(&mgmt_chan_list_lock); |
| 790 | c = __hci_mgmt_chan_find(channel); |
| 791 | mutex_unlock(&mgmt_chan_list_lock); |
| 792 | |
| 793 | return c; |
| 794 | } |
| 795 | |
| 796 | int hci_mgmt_chan_register(struct hci_mgmt_chan *c) |
| 797 | { |
| 798 | if (c->channel < HCI_CHANNEL_CONTROL) |
| 799 | return -EINVAL; |
| 800 | |
| 801 | mutex_lock(&mgmt_chan_list_lock); |
| 802 | if (__hci_mgmt_chan_find(c->channel)) { |
| 803 | mutex_unlock(&mgmt_chan_list_lock); |
| 804 | return -EALREADY; |
| 805 | } |
| 806 | |
| 807 | list_add_tail(&c->list, &mgmt_chan_list); |
| 808 | |
| 809 | mutex_unlock(&mgmt_chan_list_lock); |
| 810 | |
| 811 | return 0; |
| 812 | } |
| 813 | EXPORT_SYMBOL(hci_mgmt_chan_register); |
| 814 | |
| 815 | void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c) |
| 816 | { |
| 817 | mutex_lock(&mgmt_chan_list_lock); |
| 818 | list_del(&c->list); |
| 819 | mutex_unlock(&mgmt_chan_list_lock); |
| 820 | } |
| 821 | EXPORT_SYMBOL(hci_mgmt_chan_unregister); |
| 822 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | static int hci_sock_release(struct socket *sock) |
| 824 | { |
| 825 | struct sock *sk = sock->sk; |
Marcel Holtmann | 7b005bd | 2006-02-13 11:40:03 +0100 | [diff] [blame] | 826 | struct hci_dev *hdev; |
Marcel Holtmann | 249fa16 | 2016-08-27 20:23:40 +0200 | [diff] [blame] | 827 | struct sk_buff *skb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | |
| 829 | BT_DBG("sock %p sk %p", sock, sk); |
| 830 | |
| 831 | if (!sk) |
| 832 | return 0; |
| 833 | |
Dan Carpenter | 58e957b | 2020-01-15 20:49:04 +0300 | [diff] [blame] | 834 | lock_sock(sk); |
| 835 | |
Marcel Holtmann | 70ecce9 | 2016-08-27 20:23:38 +0200 | [diff] [blame] | 836 | switch (hci_pi(sk)->channel) { |
| 837 | case HCI_CHANNEL_MONITOR: |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 838 | atomic_dec(&monitor_promisc); |
Marcel Holtmann | 70ecce9 | 2016-08-27 20:23:38 +0200 | [diff] [blame] | 839 | break; |
Marcel Holtmann | f81f5b2 | 2016-08-30 05:00:39 +0200 | [diff] [blame] | 840 | case HCI_CHANNEL_RAW: |
Marcel Holtmann | aa1638d | 2016-09-01 19:48:28 +0200 | [diff] [blame] | 841 | case HCI_CHANNEL_USER: |
Marcel Holtmann | 70ecce9 | 2016-08-27 20:23:38 +0200 | [diff] [blame] | 842 | case HCI_CHANNEL_CONTROL: |
Marcel Holtmann | 249fa16 | 2016-08-27 20:23:40 +0200 | [diff] [blame] | 843 | /* Send event to monitor */ |
| 844 | skb = create_monitor_ctrl_close(sk); |
| 845 | if (skb) { |
| 846 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, |
| 847 | HCI_SOCK_TRUSTED, NULL); |
| 848 | kfree_skb(skb); |
| 849 | } |
| 850 | |
Marcel Holtmann | df1cb87 | 2016-08-30 05:00:34 +0200 | [diff] [blame] | 851 | hci_sock_free_cookie(sk); |
Marcel Holtmann | 70ecce9 | 2016-08-27 20:23:38 +0200 | [diff] [blame] | 852 | break; |
| 853 | } |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 854 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | bt_sock_unlink(&hci_sk_list, sk); |
| 856 | |
Myungho Jung | 3df00eb | 2019-02-02 16:56:36 -0800 | [diff] [blame] | 857 | hdev = hci_pi(sk)->hdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | if (hdev) { |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 859 | if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { |
Masahiro Yamada | 9332ef9 | 2017-02-27 14:28:47 -0800 | [diff] [blame] | 860 | /* When releasing a user channel exclusive access, |
Simon Fels | 6b3cc1d | 2015-09-02 12:10:12 +0200 | [diff] [blame] | 861 | * call hci_dev_do_close directly instead of calling |
| 862 | * hci_dev_close to ensure the exclusive access will |
| 863 | * be released and the controller brought back down. |
| 864 | * |
| 865 | * The checking of HCI_AUTO_OFF is not needed in this |
| 866 | * case since it will have been cleared already when |
| 867 | * opening the user channel. |
| 868 | */ |
| 869 | hci_dev_do_close(hdev); |
Loic Poulain | 9380f9e | 2015-05-21 16:46:41 +0200 | [diff] [blame] | 870 | hci_dev_clear_flag(hdev, HCI_USER_CHANNEL); |
| 871 | mgmt_index_added(hdev); |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 872 | } |
| 873 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 874 | atomic_dec(&hdev->promisc); |
| 875 | hci_dev_put(hdev); |
| 876 | } |
| 877 | |
| 878 | sock_orphan(sk); |
Dan Carpenter | 58e957b | 2020-01-15 20:49:04 +0300 | [diff] [blame] | 879 | release_sock(sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | sock_put(sk); |
| 881 | return 0; |
| 882 | } |
| 883 | |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 884 | static int hci_sock_blacklist_add(struct hci_dev *hdev, void __user *arg) |
Johan Hedberg | f035856 | 2010-05-18 13:20:32 +0200 | [diff] [blame] | 885 | { |
| 886 | bdaddr_t bdaddr; |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 887 | int err; |
Johan Hedberg | f035856 | 2010-05-18 13:20:32 +0200 | [diff] [blame] | 888 | |
| 889 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) |
| 890 | return -EFAULT; |
| 891 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 892 | hci_dev_lock(hdev); |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 893 | |
Johan Hedberg | dcc36c1 | 2014-07-09 12:59:13 +0300 | [diff] [blame] | 894 | err = hci_bdaddr_list_add(&hdev->blacklist, &bdaddr, BDADDR_BREDR); |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 895 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 896 | hci_dev_unlock(hdev); |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 897 | |
| 898 | return err; |
Johan Hedberg | f035856 | 2010-05-18 13:20:32 +0200 | [diff] [blame] | 899 | } |
| 900 | |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 901 | static int hci_sock_blacklist_del(struct hci_dev *hdev, void __user *arg) |
Johan Hedberg | f035856 | 2010-05-18 13:20:32 +0200 | [diff] [blame] | 902 | { |
| 903 | bdaddr_t bdaddr; |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 904 | int err; |
Johan Hedberg | f035856 | 2010-05-18 13:20:32 +0200 | [diff] [blame] | 905 | |
| 906 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) |
| 907 | return -EFAULT; |
| 908 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 909 | hci_dev_lock(hdev); |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 910 | |
Johan Hedberg | dcc36c1 | 2014-07-09 12:59:13 +0300 | [diff] [blame] | 911 | err = hci_bdaddr_list_del(&hdev->blacklist, &bdaddr, BDADDR_BREDR); |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 912 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 913 | hci_dev_unlock(hdev); |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 914 | |
| 915 | return err; |
Johan Hedberg | f035856 | 2010-05-18 13:20:32 +0200 | [diff] [blame] | 916 | } |
| 917 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 918 | /* Ioctls that require bound socket */ |
Gustavo Padovan | 6039aa7 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 919 | static int hci_sock_bound_ioctl(struct sock *sk, unsigned int cmd, |
| 920 | unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 921 | { |
Tetsuo Handa | 0782c8c | 2021-08-04 19:26:56 +0900 | [diff] [blame] | 922 | struct hci_dev *hdev = hci_hdev_from_sock(sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 923 | |
Tetsuo Handa | 0782c8c | 2021-08-04 19:26:56 +0900 | [diff] [blame] | 924 | if (IS_ERR(hdev)) |
| 925 | return PTR_ERR(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 927 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) |
Marcel Holtmann | 0736cfa | 2013-08-26 21:40:51 -0700 | [diff] [blame] | 928 | return -EBUSY; |
| 929 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 930 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
Marcel Holtmann | fee746b | 2014-06-29 12:13:05 +0200 | [diff] [blame] | 931 | return -EOPNOTSUPP; |
| 932 | |
Marcel Holtmann | ca8bee5 | 2016-07-05 14:30:14 +0200 | [diff] [blame] | 933 | if (hdev->dev_type != HCI_PRIMARY) |
Marcel Holtmann | 5b69bef5 | 2013-10-10 10:02:08 -0700 | [diff] [blame] | 934 | return -EOPNOTSUPP; |
| 935 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 936 | switch (cmd) { |
| 937 | case HCISETRAW: |
| 938 | if (!capable(CAP_NET_ADMIN)) |
Zhao Hongjiang | bf5b30b | 2012-09-20 22:37:25 +0000 | [diff] [blame] | 939 | return -EPERM; |
Marcel Holtmann | db59668 | 2014-04-16 20:04:38 -0700 | [diff] [blame] | 940 | return -EOPNOTSUPP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 942 | case HCIGETCONNINFO: |
Marcel Holtmann | 8528d3f | 2015-11-08 07:47:11 +0100 | [diff] [blame] | 943 | return hci_get_conn_info(hdev, (void __user *)arg); |
Marcel Holtmann | 40be492 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 944 | |
| 945 | case HCIGETAUTHINFO: |
Marcel Holtmann | 8528d3f | 2015-11-08 07:47:11 +0100 | [diff] [blame] | 946 | return hci_get_auth_info(hdev, (void __user *)arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | |
Johan Hedberg | f035856 | 2010-05-18 13:20:32 +0200 | [diff] [blame] | 948 | case HCIBLOCKADDR: |
| 949 | if (!capable(CAP_NET_ADMIN)) |
Zhao Hongjiang | bf5b30b | 2012-09-20 22:37:25 +0000 | [diff] [blame] | 950 | return -EPERM; |
Marcel Holtmann | 8528d3f | 2015-11-08 07:47:11 +0100 | [diff] [blame] | 951 | return hci_sock_blacklist_add(hdev, (void __user *)arg); |
Johan Hedberg | f035856 | 2010-05-18 13:20:32 +0200 | [diff] [blame] | 952 | |
| 953 | case HCIUNBLOCKADDR: |
| 954 | if (!capable(CAP_NET_ADMIN)) |
Zhao Hongjiang | bf5b30b | 2012-09-20 22:37:25 +0000 | [diff] [blame] | 955 | return -EPERM; |
Marcel Holtmann | 8528d3f | 2015-11-08 07:47:11 +0100 | [diff] [blame] | 956 | return hci_sock_blacklist_del(hdev, (void __user *)arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | } |
Marcel Holtmann | 0736cfa | 2013-08-26 21:40:51 -0700 | [diff] [blame] | 958 | |
Marcel Holtmann | 324d36e | 2013-10-10 10:50:06 -0700 | [diff] [blame] | 959 | return -ENOIOCTLCMD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | } |
| 961 | |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame] | 962 | static int hci_sock_ioctl(struct socket *sock, unsigned int cmd, |
| 963 | unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | { |
Marcel Holtmann | 8528d3f | 2015-11-08 07:47:11 +0100 | [diff] [blame] | 965 | void __user *argp = (void __user *)arg; |
Marcel Holtmann | 0736cfa | 2013-08-26 21:40:51 -0700 | [diff] [blame] | 966 | struct sock *sk = sock->sk; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 967 | int err; |
| 968 | |
| 969 | BT_DBG("cmd %x arg %lx", cmd, arg); |
| 970 | |
Marcel Holtmann | c1c4f95 | 2013-08-26 09:39:55 -0700 | [diff] [blame] | 971 | lock_sock(sk); |
| 972 | |
| 973 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { |
| 974 | err = -EBADFD; |
| 975 | goto done; |
| 976 | } |
| 977 | |
Marcel Holtmann | f81f5b2 | 2016-08-30 05:00:39 +0200 | [diff] [blame] | 978 | /* When calling an ioctl on an unbound raw socket, then ensure |
| 979 | * that the monitor gets informed. Ensure that the resulting event |
| 980 | * is only send once by checking if the cookie exists or not. The |
| 981 | * socket cookie will be only ever generated once for the lifetime |
| 982 | * of a given socket. |
| 983 | */ |
| 984 | if (hci_sock_gen_cookie(sk)) { |
| 985 | struct sk_buff *skb; |
| 986 | |
| 987 | if (capable(CAP_NET_ADMIN)) |
| 988 | hci_sock_set_flag(sk, HCI_SOCK_TRUSTED); |
| 989 | |
| 990 | /* Send event to monitor */ |
| 991 | skb = create_monitor_ctrl_open(sk); |
| 992 | if (skb) { |
| 993 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, |
| 994 | HCI_SOCK_TRUSTED, NULL); |
| 995 | kfree_skb(skb); |
| 996 | } |
| 997 | } |
| 998 | |
Marcel Holtmann | c1c4f95 | 2013-08-26 09:39:55 -0700 | [diff] [blame] | 999 | release_sock(sk); |
| 1000 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | switch (cmd) { |
| 1002 | case HCIGETDEVLIST: |
| 1003 | return hci_get_dev_list(argp); |
| 1004 | |
| 1005 | case HCIGETDEVINFO: |
| 1006 | return hci_get_dev_info(argp); |
| 1007 | |
| 1008 | case HCIGETCONNLIST: |
| 1009 | return hci_get_conn_list(argp); |
| 1010 | |
| 1011 | case HCIDEVUP: |
| 1012 | if (!capable(CAP_NET_ADMIN)) |
Zhao Hongjiang | bf5b30b | 2012-09-20 22:37:25 +0000 | [diff] [blame] | 1013 | return -EPERM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1014 | return hci_dev_open(arg); |
| 1015 | |
| 1016 | case HCIDEVDOWN: |
| 1017 | if (!capable(CAP_NET_ADMIN)) |
Zhao Hongjiang | bf5b30b | 2012-09-20 22:37:25 +0000 | [diff] [blame] | 1018 | return -EPERM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | return hci_dev_close(arg); |
| 1020 | |
| 1021 | case HCIDEVRESET: |
| 1022 | if (!capable(CAP_NET_ADMIN)) |
Zhao Hongjiang | bf5b30b | 2012-09-20 22:37:25 +0000 | [diff] [blame] | 1023 | return -EPERM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1024 | return hci_dev_reset(arg); |
| 1025 | |
| 1026 | case HCIDEVRESTAT: |
| 1027 | if (!capable(CAP_NET_ADMIN)) |
Zhao Hongjiang | bf5b30b | 2012-09-20 22:37:25 +0000 | [diff] [blame] | 1028 | return -EPERM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1029 | return hci_dev_reset_stat(arg); |
| 1030 | |
| 1031 | case HCISETSCAN: |
| 1032 | case HCISETAUTH: |
| 1033 | case HCISETENCRYPT: |
| 1034 | case HCISETPTYPE: |
| 1035 | case HCISETLINKPOL: |
| 1036 | case HCISETLINKMODE: |
| 1037 | case HCISETACLMTU: |
| 1038 | case HCISETSCOMTU: |
| 1039 | if (!capable(CAP_NET_ADMIN)) |
Zhao Hongjiang | bf5b30b | 2012-09-20 22:37:25 +0000 | [diff] [blame] | 1040 | return -EPERM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1041 | return hci_dev_cmd(cmd, argp); |
| 1042 | |
| 1043 | case HCIINQUIRY: |
| 1044 | return hci_inquiry(argp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1045 | } |
Marcel Holtmann | c1c4f95 | 2013-08-26 09:39:55 -0700 | [diff] [blame] | 1046 | |
| 1047 | lock_sock(sk); |
| 1048 | |
| 1049 | err = hci_sock_bound_ioctl(sk, cmd, arg); |
| 1050 | |
| 1051 | done: |
| 1052 | release_sock(sk); |
| 1053 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1054 | } |
| 1055 | |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame] | 1056 | static int hci_sock_bind(struct socket *sock, struct sockaddr *addr, |
| 1057 | int addr_len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1058 | { |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 1059 | struct sockaddr_hci haddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1060 | struct sock *sk = sock->sk; |
| 1061 | struct hci_dev *hdev = NULL; |
Marcel Holtmann | f4cdbb3f | 2016-08-30 05:00:40 +0200 | [diff] [blame] | 1062 | struct sk_buff *skb; |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 1063 | int len, err = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1064 | |
| 1065 | BT_DBG("sock %p sk %p", sock, sk); |
| 1066 | |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 1067 | if (!addr) |
| 1068 | return -EINVAL; |
| 1069 | |
| 1070 | memset(&haddr, 0, sizeof(haddr)); |
| 1071 | len = min_t(unsigned int, sizeof(haddr), addr_len); |
| 1072 | memcpy(&haddr, addr, len); |
| 1073 | |
| 1074 | if (haddr.hci_family != AF_BLUETOOTH) |
| 1075 | return -EINVAL; |
| 1076 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1077 | lock_sock(sk); |
| 1078 | |
Tetsuo Handa | 0782c8c | 2021-08-04 19:26:56 +0900 | [diff] [blame] | 1079 | /* Allow detaching from dead device and attaching to alive device, if |
| 1080 | * the caller wants to re-bind (instead of close) this socket in |
| 1081 | * response to hci_sock_dev_event(HCI_DEV_UNREG) notification. |
| 1082 | */ |
| 1083 | hdev = hci_pi(sk)->hdev; |
| 1084 | if (hdev && hci_dev_test_flag(hdev, HCI_UNREGISTER)) { |
| 1085 | hci_pi(sk)->hdev = NULL; |
| 1086 | sk->sk_state = BT_OPEN; |
| 1087 | hci_dev_put(hdev); |
| 1088 | } |
| 1089 | hdev = NULL; |
| 1090 | |
Marcel Holtmann | 7cc2ade | 2012-02-20 14:50:35 +0100 | [diff] [blame] | 1091 | if (sk->sk_state == BT_BOUND) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1092 | err = -EALREADY; |
| 1093 | goto done; |
| 1094 | } |
| 1095 | |
Marcel Holtmann | 7cc2ade | 2012-02-20 14:50:35 +0100 | [diff] [blame] | 1096 | switch (haddr.hci_channel) { |
| 1097 | case HCI_CHANNEL_RAW: |
| 1098 | if (hci_pi(sk)->hdev) { |
| 1099 | err = -EALREADY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1100 | goto done; |
| 1101 | } |
| 1102 | |
Marcel Holtmann | 7cc2ade | 2012-02-20 14:50:35 +0100 | [diff] [blame] | 1103 | if (haddr.hci_dev != HCI_DEV_NONE) { |
| 1104 | hdev = hci_dev_get(haddr.hci_dev); |
| 1105 | if (!hdev) { |
| 1106 | err = -ENODEV; |
| 1107 | goto done; |
| 1108 | } |
| 1109 | |
| 1110 | atomic_inc(&hdev->promisc); |
| 1111 | } |
| 1112 | |
Marcel Holtmann | 5a6d2cf | 2016-08-30 05:00:37 +0200 | [diff] [blame] | 1113 | hci_pi(sk)->channel = haddr.hci_channel; |
Marcel Holtmann | f81f5b2 | 2016-08-30 05:00:39 +0200 | [diff] [blame] | 1114 | |
Marcel Holtmann | f4cdbb3f | 2016-08-30 05:00:40 +0200 | [diff] [blame] | 1115 | if (!hci_sock_gen_cookie(sk)) { |
| 1116 | /* In the case when a cookie has already been assigned, |
| 1117 | * then there has been already an ioctl issued against |
| 1118 | * an unbound socket and with that triggerd an open |
| 1119 | * notification. Send a close notification first to |
| 1120 | * allow the state transition to bounded. |
| 1121 | */ |
| 1122 | skb = create_monitor_ctrl_close(sk); |
Marcel Holtmann | f81f5b2 | 2016-08-30 05:00:39 +0200 | [diff] [blame] | 1123 | if (skb) { |
| 1124 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, |
| 1125 | HCI_SOCK_TRUSTED, NULL); |
| 1126 | kfree_skb(skb); |
| 1127 | } |
| 1128 | } |
Marcel Holtmann | f4cdbb3f | 2016-08-30 05:00:40 +0200 | [diff] [blame] | 1129 | |
| 1130 | if (capable(CAP_NET_ADMIN)) |
| 1131 | hci_sock_set_flag(sk, HCI_SOCK_TRUSTED); |
| 1132 | |
| 1133 | hci_pi(sk)->hdev = hdev; |
| 1134 | |
| 1135 | /* Send event to monitor */ |
| 1136 | skb = create_monitor_ctrl_open(sk); |
| 1137 | if (skb) { |
| 1138 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, |
| 1139 | HCI_SOCK_TRUSTED, NULL); |
| 1140 | kfree_skb(skb); |
| 1141 | } |
Marcel Holtmann | 7cc2ade | 2012-02-20 14:50:35 +0100 | [diff] [blame] | 1142 | break; |
| 1143 | |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 1144 | case HCI_CHANNEL_USER: |
| 1145 | if (hci_pi(sk)->hdev) { |
| 1146 | err = -EALREADY; |
| 1147 | goto done; |
| 1148 | } |
| 1149 | |
| 1150 | if (haddr.hci_dev == HCI_DEV_NONE) { |
| 1151 | err = -EINVAL; |
| 1152 | goto done; |
| 1153 | } |
| 1154 | |
Marcel Holtmann | 10a8b86 | 2013-10-01 22:59:24 -0700 | [diff] [blame] | 1155 | if (!capable(CAP_NET_ADMIN)) { |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 1156 | err = -EPERM; |
| 1157 | goto done; |
| 1158 | } |
| 1159 | |
| 1160 | hdev = hci_dev_get(haddr.hci_dev); |
| 1161 | if (!hdev) { |
| 1162 | err = -ENODEV; |
| 1163 | goto done; |
| 1164 | } |
| 1165 | |
Marcel Holtmann | 781f899 | 2015-06-06 06:06:49 +0200 | [diff] [blame] | 1166 | if (test_bit(HCI_INIT, &hdev->flags) || |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 1167 | hci_dev_test_flag(hdev, HCI_SETUP) || |
Marcel Holtmann | 781f899 | 2015-06-06 06:06:49 +0200 | [diff] [blame] | 1168 | hci_dev_test_flag(hdev, HCI_CONFIG) || |
| 1169 | (!hci_dev_test_flag(hdev, HCI_AUTO_OFF) && |
| 1170 | test_bit(HCI_UP, &hdev->flags))) { |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 1171 | err = -EBUSY; |
| 1172 | hci_dev_put(hdev); |
| 1173 | goto done; |
| 1174 | } |
| 1175 | |
Marcel Holtmann | 238be78 | 2015-03-13 02:11:06 -0700 | [diff] [blame] | 1176 | if (hci_dev_test_and_set_flag(hdev, HCI_USER_CHANNEL)) { |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 1177 | err = -EUSERS; |
| 1178 | hci_dev_put(hdev); |
| 1179 | goto done; |
| 1180 | } |
| 1181 | |
Marcel Holtmann | 0602a8a | 2014-07-02 21:30:54 +0200 | [diff] [blame] | 1182 | mgmt_index_removed(hdev); |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 1183 | |
| 1184 | err = hci_dev_open(hdev->id); |
| 1185 | if (err) { |
Marcel Holtmann | 781f899 | 2015-06-06 06:06:49 +0200 | [diff] [blame] | 1186 | if (err == -EALREADY) { |
| 1187 | /* In case the transport is already up and |
| 1188 | * running, clear the error here. |
| 1189 | * |
Masahiro Yamada | 9332ef9 | 2017-02-27 14:28:47 -0800 | [diff] [blame] | 1190 | * This can happen when opening a user |
Marcel Holtmann | 781f899 | 2015-06-06 06:06:49 +0200 | [diff] [blame] | 1191 | * channel and HCI_AUTO_OFF grace period |
| 1192 | * is still active. |
| 1193 | */ |
| 1194 | err = 0; |
| 1195 | } else { |
| 1196 | hci_dev_clear_flag(hdev, HCI_USER_CHANNEL); |
| 1197 | mgmt_index_added(hdev); |
| 1198 | hci_dev_put(hdev); |
| 1199 | goto done; |
| 1200 | } |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 1201 | } |
| 1202 | |
Marcel Holtmann | 5a6d2cf | 2016-08-30 05:00:37 +0200 | [diff] [blame] | 1203 | hci_pi(sk)->channel = haddr.hci_channel; |
Marcel Holtmann | aa1638d | 2016-09-01 19:48:28 +0200 | [diff] [blame] | 1204 | |
| 1205 | if (!hci_sock_gen_cookie(sk)) { |
| 1206 | /* In the case when a cookie has already been assigned, |
| 1207 | * this socket will transition from a raw socket into |
Masahiro Yamada | 9332ef9 | 2017-02-27 14:28:47 -0800 | [diff] [blame] | 1208 | * a user channel socket. For a clean transition, send |
Marcel Holtmann | aa1638d | 2016-09-01 19:48:28 +0200 | [diff] [blame] | 1209 | * the close notification first. |
| 1210 | */ |
| 1211 | skb = create_monitor_ctrl_close(sk); |
| 1212 | if (skb) { |
| 1213 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, |
| 1214 | HCI_SOCK_TRUSTED, NULL); |
| 1215 | kfree_skb(skb); |
| 1216 | } |
| 1217 | } |
| 1218 | |
| 1219 | /* The user channel is restricted to CAP_NET_ADMIN |
| 1220 | * capabilities and with that implicitly trusted. |
| 1221 | */ |
| 1222 | hci_sock_set_flag(sk, HCI_SOCK_TRUSTED); |
| 1223 | |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 1224 | hci_pi(sk)->hdev = hdev; |
Marcel Holtmann | 5a6d2cf | 2016-08-30 05:00:37 +0200 | [diff] [blame] | 1225 | |
Marcel Holtmann | aa1638d | 2016-09-01 19:48:28 +0200 | [diff] [blame] | 1226 | /* Send event to monitor */ |
| 1227 | skb = create_monitor_ctrl_open(sk); |
| 1228 | if (skb) { |
| 1229 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, |
| 1230 | HCI_SOCK_TRUSTED, NULL); |
| 1231 | kfree_skb(skb); |
| 1232 | } |
| 1233 | |
Marcel Holtmann | 5a6d2cf | 2016-08-30 05:00:37 +0200 | [diff] [blame] | 1234 | atomic_inc(&hdev->promisc); |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 1235 | break; |
| 1236 | |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 1237 | case HCI_CHANNEL_MONITOR: |
| 1238 | if (haddr.hci_dev != HCI_DEV_NONE) { |
| 1239 | err = -EINVAL; |
| 1240 | goto done; |
| 1241 | } |
| 1242 | |
| 1243 | if (!capable(CAP_NET_RAW)) { |
| 1244 | err = -EPERM; |
| 1245 | goto done; |
| 1246 | } |
| 1247 | |
Marcel Holtmann | 5a6d2cf | 2016-08-30 05:00:37 +0200 | [diff] [blame] | 1248 | hci_pi(sk)->channel = haddr.hci_channel; |
| 1249 | |
Marcel Holtmann | 50ebc05 | 2015-03-14 19:27:58 -0700 | [diff] [blame] | 1250 | /* The monitor interface is restricted to CAP_NET_RAW |
| 1251 | * capabilities and with that implicitly trusted. |
| 1252 | */ |
| 1253 | hci_sock_set_flag(sk, HCI_SOCK_TRUSTED); |
| 1254 | |
Johannes Berg | 787b306 | 2016-01-06 14:38:40 +0100 | [diff] [blame] | 1255 | send_monitor_note(sk, "Linux version %s (%s)", |
| 1256 | init_utsname()->release, |
| 1257 | init_utsname()->machine); |
Marcel Holtmann | 9e8305b | 2016-08-30 05:00:35 +0200 | [diff] [blame] | 1258 | send_monitor_note(sk, "Bluetooth subsystem version %u.%u", |
| 1259 | BT_SUBSYS_VERSION, BT_SUBSYS_REVISION); |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 1260 | send_monitor_replay(sk); |
Marcel Holtmann | 249fa16 | 2016-08-27 20:23:40 +0200 | [diff] [blame] | 1261 | send_monitor_control_replay(sk); |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 1262 | |
| 1263 | atomic_inc(&monitor_promisc); |
| 1264 | break; |
| 1265 | |
Marcel Holtmann | ac71494 | 2015-11-08 07:47:13 +0100 | [diff] [blame] | 1266 | case HCI_CHANNEL_LOGGING: |
| 1267 | if (haddr.hci_dev != HCI_DEV_NONE) { |
| 1268 | err = -EINVAL; |
| 1269 | goto done; |
| 1270 | } |
| 1271 | |
| 1272 | if (!capable(CAP_NET_ADMIN)) { |
| 1273 | err = -EPERM; |
| 1274 | goto done; |
| 1275 | } |
Marcel Holtmann | 5a6d2cf | 2016-08-30 05:00:37 +0200 | [diff] [blame] | 1276 | |
| 1277 | hci_pi(sk)->channel = haddr.hci_channel; |
Marcel Holtmann | ac71494 | 2015-11-08 07:47:13 +0100 | [diff] [blame] | 1278 | break; |
| 1279 | |
Marcel Holtmann | 7cc2ade | 2012-02-20 14:50:35 +0100 | [diff] [blame] | 1280 | default: |
Johan Hedberg | 801c1e8 | 2015-03-06 21:08:50 +0200 | [diff] [blame] | 1281 | if (!hci_mgmt_chan_find(haddr.hci_channel)) { |
| 1282 | err = -EINVAL; |
| 1283 | goto done; |
| 1284 | } |
| 1285 | |
| 1286 | if (haddr.hci_dev != HCI_DEV_NONE) { |
| 1287 | err = -EINVAL; |
| 1288 | goto done; |
| 1289 | } |
| 1290 | |
Marcel Holtmann | 1195fbb | 2015-03-14 19:28:04 -0700 | [diff] [blame] | 1291 | /* Users with CAP_NET_ADMIN capabilities are allowed |
| 1292 | * access to all management commands and events. For |
| 1293 | * untrusted users the interface is restricted and |
| 1294 | * also only untrusted events are sent. |
Marcel Holtmann | 50ebc05 | 2015-03-14 19:27:58 -0700 | [diff] [blame] | 1295 | */ |
Marcel Holtmann | 1195fbb | 2015-03-14 19:28:04 -0700 | [diff] [blame] | 1296 | if (capable(CAP_NET_ADMIN)) |
| 1297 | hci_sock_set_flag(sk, HCI_SOCK_TRUSTED); |
Marcel Holtmann | 50ebc05 | 2015-03-14 19:27:58 -0700 | [diff] [blame] | 1298 | |
Marcel Holtmann | 5a6d2cf | 2016-08-30 05:00:37 +0200 | [diff] [blame] | 1299 | hci_pi(sk)->channel = haddr.hci_channel; |
| 1300 | |
Marcel Holtmann | f920733 | 2015-03-14 19:27:55 -0700 | [diff] [blame] | 1301 | /* At the moment the index and unconfigured index events |
| 1302 | * are enabled unconditionally. Setting them on each |
| 1303 | * socket when binding keeps this functionality. They |
| 1304 | * however might be cleared later and then sending of these |
| 1305 | * events will be disabled, but that is then intentional. |
Marcel Holtmann | f6b7712 | 2015-03-14 19:28:05 -0700 | [diff] [blame] | 1306 | * |
| 1307 | * This also enables generic events that are safe to be |
| 1308 | * received by untrusted users. Example for such events |
| 1309 | * are changes to settings, class of device, name etc. |
Marcel Holtmann | f920733 | 2015-03-14 19:27:55 -0700 | [diff] [blame] | 1310 | */ |
Marcel Holtmann | 5a6d2cf | 2016-08-30 05:00:37 +0200 | [diff] [blame] | 1311 | if (hci_pi(sk)->channel == HCI_CHANNEL_CONTROL) { |
Marcel Holtmann | f4cdbb3f | 2016-08-30 05:00:40 +0200 | [diff] [blame] | 1312 | if (!hci_sock_gen_cookie(sk)) { |
| 1313 | /* In the case when a cookie has already been |
| 1314 | * assigned, this socket will transtion from |
| 1315 | * a raw socket into a control socket. To |
| 1316 | * allow for a clean transtion, send the |
| 1317 | * close notification first. |
| 1318 | */ |
| 1319 | skb = create_monitor_ctrl_close(sk); |
| 1320 | if (skb) { |
| 1321 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, |
| 1322 | HCI_SOCK_TRUSTED, NULL); |
| 1323 | kfree_skb(skb); |
| 1324 | } |
| 1325 | } |
Marcel Holtmann | 70ecce9 | 2016-08-27 20:23:38 +0200 | [diff] [blame] | 1326 | |
Marcel Holtmann | 249fa16 | 2016-08-27 20:23:40 +0200 | [diff] [blame] | 1327 | /* Send event to monitor */ |
| 1328 | skb = create_monitor_ctrl_open(sk); |
| 1329 | if (skb) { |
| 1330 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, |
| 1331 | HCI_SOCK_TRUSTED, NULL); |
| 1332 | kfree_skb(skb); |
| 1333 | } |
| 1334 | |
Marcel Holtmann | f920733 | 2015-03-14 19:27:55 -0700 | [diff] [blame] | 1335 | hci_sock_set_flag(sk, HCI_MGMT_INDEX_EVENTS); |
| 1336 | hci_sock_set_flag(sk, HCI_MGMT_UNCONF_INDEX_EVENTS); |
Marcel Holtmann | 5504c3a | 2016-08-29 06:19:46 +0200 | [diff] [blame] | 1337 | hci_sock_set_flag(sk, HCI_MGMT_OPTION_EVENTS); |
| 1338 | hci_sock_set_flag(sk, HCI_MGMT_SETTING_EVENTS); |
| 1339 | hci_sock_set_flag(sk, HCI_MGMT_DEV_CLASS_EVENTS); |
| 1340 | hci_sock_set_flag(sk, HCI_MGMT_LOCAL_NAME_EVENTS); |
Marcel Holtmann | f920733 | 2015-03-14 19:27:55 -0700 | [diff] [blame] | 1341 | } |
Johan Hedberg | 801c1e8 | 2015-03-06 21:08:50 +0200 | [diff] [blame] | 1342 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1343 | } |
| 1344 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1345 | sk->sk_state = BT_BOUND; |
| 1346 | |
| 1347 | done: |
| 1348 | release_sock(sk); |
| 1349 | return err; |
| 1350 | } |
| 1351 | |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame] | 1352 | static int hci_sock_getname(struct socket *sock, struct sockaddr *addr, |
| 1353 | int *addr_len, int peer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1354 | { |
Marcel Holtmann | 8528d3f | 2015-11-08 07:47:11 +0100 | [diff] [blame] | 1355 | struct sockaddr_hci *haddr = (struct sockaddr_hci *)addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1356 | struct sock *sk = sock->sk; |
Marcel Holtmann | 9d4b68b | 2013-08-26 00:20:37 -0700 | [diff] [blame] | 1357 | struct hci_dev *hdev; |
| 1358 | int err = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1359 | |
| 1360 | BT_DBG("sock %p sk %p", sock, sk); |
| 1361 | |
Marcel Holtmann | 06f43cb | 2013-08-26 00:06:30 -0700 | [diff] [blame] | 1362 | if (peer) |
| 1363 | return -EOPNOTSUPP; |
| 1364 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1365 | lock_sock(sk); |
| 1366 | |
Tetsuo Handa | 0782c8c | 2021-08-04 19:26:56 +0900 | [diff] [blame] | 1367 | hdev = hci_hdev_from_sock(sk); |
| 1368 | if (IS_ERR(hdev)) { |
| 1369 | err = PTR_ERR(hdev); |
Marcel Holtmann | 9d4b68b | 2013-08-26 00:20:37 -0700 | [diff] [blame] | 1370 | goto done; |
| 1371 | } |
| 1372 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1373 | *addr_len = sizeof(*haddr); |
| 1374 | haddr->hci_family = AF_BLUETOOTH; |
Marcel Holtmann | 7b005bd | 2006-02-13 11:40:03 +0100 | [diff] [blame] | 1375 | haddr->hci_dev = hdev->id; |
Marcel Holtmann | 9d4b68b | 2013-08-26 00:20:37 -0700 | [diff] [blame] | 1376 | haddr->hci_channel= hci_pi(sk)->channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1377 | |
Marcel Holtmann | 9d4b68b | 2013-08-26 00:20:37 -0700 | [diff] [blame] | 1378 | done: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1379 | release_sock(sk); |
Marcel Holtmann | 9d4b68b | 2013-08-26 00:20:37 -0700 | [diff] [blame] | 1380 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1381 | } |
| 1382 | |
Gustavo Padovan | 6039aa7 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 1383 | static void hci_sock_cmsg(struct sock *sk, struct msghdr *msg, |
| 1384 | struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1385 | { |
| 1386 | __u32 mask = hci_pi(sk)->cmsg_mask; |
| 1387 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 1388 | if (mask & HCI_CMSG_DIR) { |
| 1389 | int incoming = bt_cb(skb)->incoming; |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame] | 1390 | put_cmsg(msg, SOL_HCI, HCI_CMSG_DIR, sizeof(incoming), |
| 1391 | &incoming); |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 1392 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1393 | |
Patrick McHardy | a61bbcf | 2005-08-14 17:24:31 -0700 | [diff] [blame] | 1394 | if (mask & HCI_CMSG_TSTAMP) { |
Johann Felix Soden | f6e623a | 2010-02-15 22:23:48 +0100 | [diff] [blame] | 1395 | #ifdef CONFIG_COMPAT |
| 1396 | struct compat_timeval ctv; |
| 1397 | #endif |
Patrick McHardy | a61bbcf | 2005-08-14 17:24:31 -0700 | [diff] [blame] | 1398 | struct timeval tv; |
Marcel Holtmann | 767c5eb | 2007-09-09 08:39:34 +0200 | [diff] [blame] | 1399 | void *data; |
| 1400 | int len; |
Patrick McHardy | a61bbcf | 2005-08-14 17:24:31 -0700 | [diff] [blame] | 1401 | |
| 1402 | skb_get_timestamp(skb, &tv); |
Marcel Holtmann | 767c5eb | 2007-09-09 08:39:34 +0200 | [diff] [blame] | 1403 | |
David S. Miller | 1da97f8 | 2007-09-12 14:10:58 +0200 | [diff] [blame] | 1404 | data = &tv; |
| 1405 | len = sizeof(tv); |
| 1406 | #ifdef CONFIG_COMPAT |
H. J. Lu | da88cea | 2012-02-10 14:12:15 -0800 | [diff] [blame] | 1407 | if (!COMPAT_USE_64BIT_TIME && |
| 1408 | (msg->msg_flags & MSG_CMSG_COMPAT)) { |
Marcel Holtmann | 767c5eb | 2007-09-09 08:39:34 +0200 | [diff] [blame] | 1409 | ctv.tv_sec = tv.tv_sec; |
| 1410 | ctv.tv_usec = tv.tv_usec; |
| 1411 | data = &ctv; |
| 1412 | len = sizeof(ctv); |
Marcel Holtmann | 767c5eb | 2007-09-09 08:39:34 +0200 | [diff] [blame] | 1413 | } |
David S. Miller | 1da97f8 | 2007-09-12 14:10:58 +0200 | [diff] [blame] | 1414 | #endif |
Marcel Holtmann | 767c5eb | 2007-09-09 08:39:34 +0200 | [diff] [blame] | 1415 | |
| 1416 | put_cmsg(msg, SOL_HCI, HCI_CMSG_TSTAMP, len, data); |
Patrick McHardy | a61bbcf | 2005-08-14 17:24:31 -0700 | [diff] [blame] | 1417 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1418 | } |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1419 | |
Marcel Holtmann | 8528d3f | 2015-11-08 07:47:11 +0100 | [diff] [blame] | 1420 | static int hci_sock_recvmsg(struct socket *sock, struct msghdr *msg, |
| 1421 | size_t len, int flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1422 | { |
| 1423 | int noblock = flags & MSG_DONTWAIT; |
| 1424 | struct sock *sk = sock->sk; |
| 1425 | struct sk_buff *skb; |
| 1426 | int copied, err; |
Denis Kenzior | 83871f8 | 2016-06-27 11:01:13 -0500 | [diff] [blame] | 1427 | unsigned int skblen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1428 | |
| 1429 | BT_DBG("sock %p, sk %p", sock, sk); |
| 1430 | |
Marcel Holtmann | d94a610 | 2015-10-25 22:45:18 +0100 | [diff] [blame] | 1431 | if (flags & MSG_OOB) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1432 | return -EOPNOTSUPP; |
| 1433 | |
Marcel Holtmann | ac71494 | 2015-11-08 07:47:13 +0100 | [diff] [blame] | 1434 | if (hci_pi(sk)->channel == HCI_CHANNEL_LOGGING) |
| 1435 | return -EOPNOTSUPP; |
| 1436 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1437 | if (sk->sk_state == BT_CLOSED) |
| 1438 | return 0; |
| 1439 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 1440 | skb = skb_recv_datagram(sk, flags, noblock, &err); |
| 1441 | if (!skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1442 | return err; |
| 1443 | |
Denis Kenzior | 83871f8 | 2016-06-27 11:01:13 -0500 | [diff] [blame] | 1444 | skblen = skb->len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1445 | copied = skb->len; |
| 1446 | if (len < copied) { |
| 1447 | msg->msg_flags |= MSG_TRUNC; |
| 1448 | copied = len; |
| 1449 | } |
| 1450 | |
Arnaldo Carvalho de Melo | badff6d | 2007-03-13 13:06:52 -0300 | [diff] [blame] | 1451 | skb_reset_transport_header(skb); |
David S. Miller | 51f3d02 | 2014-11-05 16:46:40 -0500 | [diff] [blame] | 1452 | err = skb_copy_datagram_msg(skb, 0, msg, copied); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1453 | |
Marcel Holtmann | 3a20862 | 2012-02-20 14:50:34 +0100 | [diff] [blame] | 1454 | switch (hci_pi(sk)->channel) { |
| 1455 | case HCI_CHANNEL_RAW: |
| 1456 | hci_sock_cmsg(sk, msg, skb); |
| 1457 | break; |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 1458 | case HCI_CHANNEL_USER: |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 1459 | case HCI_CHANNEL_MONITOR: |
| 1460 | sock_recv_timestamp(msg, sk, skb); |
| 1461 | break; |
Johan Hedberg | 801c1e8 | 2015-03-06 21:08:50 +0200 | [diff] [blame] | 1462 | default: |
| 1463 | if (hci_mgmt_chan_find(hci_pi(sk)->channel)) |
| 1464 | sock_recv_timestamp(msg, sk, skb); |
| 1465 | break; |
Marcel Holtmann | 3a20862 | 2012-02-20 14:50:34 +0100 | [diff] [blame] | 1466 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1467 | |
| 1468 | skb_free_datagram(sk, skb); |
| 1469 | |
Luiz Augusto von Dentz | 4f34228 | 2016-08-15 16:02:20 +0300 | [diff] [blame] | 1470 | if (flags & MSG_TRUNC) |
Denis Kenzior | 83871f8 | 2016-06-27 11:01:13 -0500 | [diff] [blame] | 1471 | copied = skblen; |
| 1472 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1473 | return err ? : copied; |
| 1474 | } |
| 1475 | |
Johan Hedberg | fa4335d | 2015-03-17 13:48:50 +0200 | [diff] [blame] | 1476 | static int hci_mgmt_cmd(struct hci_mgmt_chan *chan, struct sock *sk, |
| 1477 | struct msghdr *msg, size_t msglen) |
| 1478 | { |
| 1479 | void *buf; |
| 1480 | u8 *cp; |
| 1481 | struct mgmt_hdr *hdr; |
| 1482 | u16 opcode, index, len; |
| 1483 | struct hci_dev *hdev = NULL; |
| 1484 | const struct hci_mgmt_handler *handler; |
| 1485 | bool var_len, no_hdev; |
| 1486 | int err; |
| 1487 | |
| 1488 | BT_DBG("got %zu bytes", msglen); |
| 1489 | |
| 1490 | if (msglen < sizeof(*hdr)) |
| 1491 | return -EINVAL; |
| 1492 | |
| 1493 | buf = kmalloc(msglen, GFP_KERNEL); |
| 1494 | if (!buf) |
| 1495 | return -ENOMEM; |
| 1496 | |
| 1497 | if (memcpy_from_msg(buf, msg, msglen)) { |
| 1498 | err = -EFAULT; |
| 1499 | goto done; |
| 1500 | } |
| 1501 | |
| 1502 | hdr = buf; |
| 1503 | opcode = __le16_to_cpu(hdr->opcode); |
| 1504 | index = __le16_to_cpu(hdr->index); |
| 1505 | len = __le16_to_cpu(hdr->len); |
| 1506 | |
| 1507 | if (len != msglen - sizeof(*hdr)) { |
| 1508 | err = -EINVAL; |
| 1509 | goto done; |
| 1510 | } |
| 1511 | |
Marcel Holtmann | 38ceaa0 | 2016-08-27 20:23:41 +0200 | [diff] [blame] | 1512 | if (chan->channel == HCI_CHANNEL_CONTROL) { |
| 1513 | struct sk_buff *skb; |
| 1514 | |
| 1515 | /* Send event to monitor */ |
| 1516 | skb = create_monitor_ctrl_command(sk, index, opcode, len, |
| 1517 | buf + sizeof(*hdr)); |
| 1518 | if (skb) { |
| 1519 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, |
| 1520 | HCI_SOCK_TRUSTED, NULL); |
| 1521 | kfree_skb(skb); |
| 1522 | } |
| 1523 | } |
| 1524 | |
Johan Hedberg | fa4335d | 2015-03-17 13:48:50 +0200 | [diff] [blame] | 1525 | if (opcode >= chan->handler_count || |
| 1526 | chan->handlers[opcode].func == NULL) { |
| 1527 | BT_DBG("Unknown op %u", opcode); |
| 1528 | err = mgmt_cmd_status(sk, index, opcode, |
| 1529 | MGMT_STATUS_UNKNOWN_COMMAND); |
| 1530 | goto done; |
| 1531 | } |
| 1532 | |
| 1533 | handler = &chan->handlers[opcode]; |
| 1534 | |
| 1535 | if (!hci_sock_test_flag(sk, HCI_SOCK_TRUSTED) && |
| 1536 | !(handler->flags & HCI_MGMT_UNTRUSTED)) { |
| 1537 | err = mgmt_cmd_status(sk, index, opcode, |
| 1538 | MGMT_STATUS_PERMISSION_DENIED); |
| 1539 | goto done; |
| 1540 | } |
| 1541 | |
| 1542 | if (index != MGMT_INDEX_NONE) { |
| 1543 | hdev = hci_dev_get(index); |
| 1544 | if (!hdev) { |
| 1545 | err = mgmt_cmd_status(sk, index, opcode, |
| 1546 | MGMT_STATUS_INVALID_INDEX); |
| 1547 | goto done; |
| 1548 | } |
| 1549 | |
| 1550 | if (hci_dev_test_flag(hdev, HCI_SETUP) || |
| 1551 | hci_dev_test_flag(hdev, HCI_CONFIG) || |
| 1552 | hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
| 1553 | err = mgmt_cmd_status(sk, index, opcode, |
| 1554 | MGMT_STATUS_INVALID_INDEX); |
| 1555 | goto done; |
| 1556 | } |
| 1557 | |
| 1558 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && |
| 1559 | !(handler->flags & HCI_MGMT_UNCONFIGURED)) { |
| 1560 | err = mgmt_cmd_status(sk, index, opcode, |
| 1561 | MGMT_STATUS_INVALID_INDEX); |
| 1562 | goto done; |
| 1563 | } |
| 1564 | } |
| 1565 | |
| 1566 | no_hdev = (handler->flags & HCI_MGMT_NO_HDEV); |
| 1567 | if (no_hdev != !hdev) { |
| 1568 | err = mgmt_cmd_status(sk, index, opcode, |
| 1569 | MGMT_STATUS_INVALID_INDEX); |
| 1570 | goto done; |
| 1571 | } |
| 1572 | |
| 1573 | var_len = (handler->flags & HCI_MGMT_VAR_LEN); |
| 1574 | if ((var_len && len < handler->data_len) || |
| 1575 | (!var_len && len != handler->data_len)) { |
| 1576 | err = mgmt_cmd_status(sk, index, opcode, |
| 1577 | MGMT_STATUS_INVALID_PARAMS); |
| 1578 | goto done; |
| 1579 | } |
| 1580 | |
| 1581 | if (hdev && chan->hdev_init) |
| 1582 | chan->hdev_init(sk, hdev); |
| 1583 | |
| 1584 | cp = buf + sizeof(*hdr); |
| 1585 | |
| 1586 | err = handler->func(sk, hdev, cp, len); |
| 1587 | if (err < 0) |
| 1588 | goto done; |
| 1589 | |
| 1590 | err = msglen; |
| 1591 | |
| 1592 | done: |
| 1593 | if (hdev) |
| 1594 | hci_dev_put(hdev); |
| 1595 | |
| 1596 | kfree(buf); |
| 1597 | return err; |
| 1598 | } |
| 1599 | |
Marcel Holtmann | ac71494 | 2015-11-08 07:47:13 +0100 | [diff] [blame] | 1600 | static int hci_logging_frame(struct sock *sk, struct msghdr *msg, int len) |
| 1601 | { |
| 1602 | struct hci_mon_hdr *hdr; |
| 1603 | struct sk_buff *skb; |
| 1604 | struct hci_dev *hdev; |
| 1605 | u16 index; |
| 1606 | int err; |
| 1607 | |
| 1608 | /* The logging frame consists at minimum of the standard header, |
| 1609 | * the priority byte, the ident length byte and at least one string |
| 1610 | * terminator NUL byte. Anything shorter are invalid packets. |
| 1611 | */ |
| 1612 | if (len < sizeof(*hdr) + 3) |
| 1613 | return -EINVAL; |
| 1614 | |
| 1615 | skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err); |
| 1616 | if (!skb) |
| 1617 | return err; |
| 1618 | |
| 1619 | if (memcpy_from_msg(skb_put(skb, len), msg, len)) { |
| 1620 | err = -EFAULT; |
| 1621 | goto drop; |
| 1622 | } |
| 1623 | |
| 1624 | hdr = (void *)skb->data; |
| 1625 | |
| 1626 | if (__le16_to_cpu(hdr->len) != len - sizeof(*hdr)) { |
| 1627 | err = -EINVAL; |
| 1628 | goto drop; |
| 1629 | } |
| 1630 | |
| 1631 | if (__le16_to_cpu(hdr->opcode) == 0x0000) { |
| 1632 | __u8 priority = skb->data[sizeof(*hdr)]; |
| 1633 | __u8 ident_len = skb->data[sizeof(*hdr) + 1]; |
| 1634 | |
| 1635 | /* Only the priorities 0-7 are valid and with that any other |
| 1636 | * value results in an invalid packet. |
| 1637 | * |
| 1638 | * The priority byte is followed by an ident length byte and |
| 1639 | * the NUL terminated ident string. Check that the ident |
| 1640 | * length is not overflowing the packet and also that the |
| 1641 | * ident string itself is NUL terminated. In case the ident |
| 1642 | * length is zero, the length value actually doubles as NUL |
| 1643 | * terminator identifier. |
| 1644 | * |
| 1645 | * The message follows the ident string (if present) and |
| 1646 | * must be NUL terminated. Otherwise it is not a valid packet. |
| 1647 | */ |
| 1648 | if (priority > 7 || skb->data[len - 1] != 0x00 || |
| 1649 | ident_len > len - sizeof(*hdr) - 3 || |
| 1650 | skb->data[sizeof(*hdr) + ident_len + 1] != 0x00) { |
| 1651 | err = -EINVAL; |
| 1652 | goto drop; |
| 1653 | } |
| 1654 | } else { |
| 1655 | err = -EINVAL; |
| 1656 | goto drop; |
| 1657 | } |
| 1658 | |
| 1659 | index = __le16_to_cpu(hdr->index); |
| 1660 | |
| 1661 | if (index != MGMT_INDEX_NONE) { |
| 1662 | hdev = hci_dev_get(index); |
| 1663 | if (!hdev) { |
| 1664 | err = -ENODEV; |
| 1665 | goto drop; |
| 1666 | } |
| 1667 | } else { |
| 1668 | hdev = NULL; |
| 1669 | } |
| 1670 | |
| 1671 | hdr->opcode = cpu_to_le16(HCI_MON_USER_LOGGING); |
| 1672 | |
| 1673 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, HCI_SOCK_TRUSTED, NULL); |
| 1674 | err = len; |
| 1675 | |
| 1676 | if (hdev) |
| 1677 | hci_dev_put(hdev); |
| 1678 | |
| 1679 | drop: |
| 1680 | kfree_skb(skb); |
| 1681 | return err; |
| 1682 | } |
| 1683 | |
Ying Xue | 1b78414 | 2015-03-02 15:37:48 +0800 | [diff] [blame] | 1684 | static int hci_sock_sendmsg(struct socket *sock, struct msghdr *msg, |
| 1685 | size_t len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1686 | { |
| 1687 | struct sock *sk = sock->sk; |
Johan Hedberg | 801c1e8 | 2015-03-06 21:08:50 +0200 | [diff] [blame] | 1688 | struct hci_mgmt_chan *chan; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1689 | struct hci_dev *hdev; |
| 1690 | struct sk_buff *skb; |
| 1691 | int err; |
| 1692 | |
| 1693 | BT_DBG("sock %p sk %p", sock, sk); |
| 1694 | |
| 1695 | if (msg->msg_flags & MSG_OOB) |
| 1696 | return -EOPNOTSUPP; |
| 1697 | |
Szymon Janc | ab89f0b | 2017-04-24 18:25:04 -0700 | [diff] [blame] | 1698 | if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_NOSIGNAL|MSG_ERRQUEUE| |
| 1699 | MSG_CMSG_COMPAT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1700 | return -EINVAL; |
| 1701 | |
| 1702 | if (len < 4 || len > HCI_MAX_FRAME_SIZE) |
| 1703 | return -EINVAL; |
| 1704 | |
| 1705 | lock_sock(sk); |
| 1706 | |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 1707 | switch (hci_pi(sk)->channel) { |
| 1708 | case HCI_CHANNEL_RAW: |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 1709 | case HCI_CHANNEL_USER: |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 1710 | break; |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 1711 | case HCI_CHANNEL_MONITOR: |
| 1712 | err = -EOPNOTSUPP; |
| 1713 | goto done; |
Marcel Holtmann | ac71494 | 2015-11-08 07:47:13 +0100 | [diff] [blame] | 1714 | case HCI_CHANNEL_LOGGING: |
| 1715 | err = hci_logging_frame(sk, msg, len); |
| 1716 | goto done; |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 1717 | default: |
Johan Hedberg | 801c1e8 | 2015-03-06 21:08:50 +0200 | [diff] [blame] | 1718 | mutex_lock(&mgmt_chan_list_lock); |
| 1719 | chan = __hci_mgmt_chan_find(hci_pi(sk)->channel); |
| 1720 | if (chan) |
Johan Hedberg | fa4335d | 2015-03-17 13:48:50 +0200 | [diff] [blame] | 1721 | err = hci_mgmt_cmd(chan, sk, msg, len); |
Johan Hedberg | 801c1e8 | 2015-03-06 21:08:50 +0200 | [diff] [blame] | 1722 | else |
| 1723 | err = -EINVAL; |
| 1724 | |
| 1725 | mutex_unlock(&mgmt_chan_list_lock); |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 1726 | goto done; |
| 1727 | } |
| 1728 | |
Tetsuo Handa | 0782c8c | 2021-08-04 19:26:56 +0900 | [diff] [blame] | 1729 | hdev = hci_hdev_from_sock(sk); |
| 1730 | if (IS_ERR(hdev)) { |
| 1731 | err = PTR_ERR(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1732 | goto done; |
| 1733 | } |
| 1734 | |
Marcel Holtmann | 7e21add | 2009-11-18 01:05:00 +0100 | [diff] [blame] | 1735 | if (!test_bit(HCI_UP, &hdev->flags)) { |
| 1736 | err = -ENETDOWN; |
| 1737 | goto done; |
| 1738 | } |
| 1739 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 1740 | skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err); |
| 1741 | if (!skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1742 | goto done; |
| 1743 | |
Al Viro | 6ce8e9c | 2014-04-06 21:25:44 -0400 | [diff] [blame] | 1744 | if (memcpy_from_msg(skb_put(skb, len), msg, len)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1745 | err = -EFAULT; |
| 1746 | goto drop; |
| 1747 | } |
| 1748 | |
Marcel Holtmann | 8528d3f | 2015-11-08 07:47:11 +0100 | [diff] [blame] | 1749 | hci_skb_pkt_type(skb) = skb->data[0]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1750 | skb_pull(skb, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1751 | |
Marcel Holtmann | 1bc5ad1 | 2013-12-17 03:21:25 -0800 | [diff] [blame] | 1752 | if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { |
| 1753 | /* No permission check is needed for user channel |
| 1754 | * since that gets enforced when binding the socket. |
| 1755 | * |
| 1756 | * However check that the packet type is valid. |
| 1757 | */ |
Marcel Holtmann | d79f34e | 2015-11-05 07:10:00 +0100 | [diff] [blame] | 1758 | if (hci_skb_pkt_type(skb) != HCI_COMMAND_PKT && |
| 1759 | hci_skb_pkt_type(skb) != HCI_ACLDATA_PKT && |
| 1760 | hci_skb_pkt_type(skb) != HCI_SCODATA_PKT) { |
Marcel Holtmann | 1bc5ad1 | 2013-12-17 03:21:25 -0800 | [diff] [blame] | 1761 | err = -EINVAL; |
| 1762 | goto drop; |
| 1763 | } |
| 1764 | |
| 1765 | skb_queue_tail(&hdev->raw_q, skb); |
| 1766 | queue_work(hdev->workqueue, &hdev->tx_work); |
Marcel Holtmann | d79f34e | 2015-11-05 07:10:00 +0100 | [diff] [blame] | 1767 | } else if (hci_skb_pkt_type(skb) == HCI_COMMAND_PKT) { |
Harvey Harrison | 8398531 | 2008-05-02 16:25:46 -0700 | [diff] [blame] | 1768 | u16 opcode = get_unaligned_le16(skb->data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1769 | u16 ogf = hci_opcode_ogf(opcode); |
| 1770 | u16 ocf = hci_opcode_ocf(opcode); |
| 1771 | |
| 1772 | if (((ogf > HCI_SFLT_MAX_OGF) || |
Gustavo Padovan | 3bb3c75 | 2012-05-17 00:36:22 -0300 | [diff] [blame] | 1773 | !hci_test_bit(ocf & HCI_FLT_OCF_BITS, |
| 1774 | &hci_sec_filter.ocf_mask[ogf])) && |
| 1775 | !capable(CAP_NET_RAW)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1776 | err = -EPERM; |
| 1777 | goto drop; |
| 1778 | } |
| 1779 | |
Marcel Holtmann | 1982162 | 2015-11-06 07:42:20 +0100 | [diff] [blame] | 1780 | /* Since the opcode has already been extracted here, store |
| 1781 | * a copy of the value for later use by the drivers. |
| 1782 | */ |
| 1783 | hci_skb_opcode(skb) = opcode; |
| 1784 | |
Marcel Holtmann | fee746b | 2014-06-29 12:13:05 +0200 | [diff] [blame] | 1785 | if (ogf == 0x3f) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1786 | skb_queue_tail(&hdev->raw_q, skb); |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 1787 | queue_work(hdev->workqueue, &hdev->tx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1788 | } else { |
Stephen Hemminger | 49c922b | 2014-10-27 21:12:20 -0700 | [diff] [blame] | 1789 | /* Stand-alone HCI commands must be flagged as |
Johan Hedberg | 11714b3 | 2013-03-05 20:37:47 +0200 | [diff] [blame] | 1790 | * single-command requests. |
| 1791 | */ |
Johan Hedberg | 44d2713 | 2015-11-05 09:31:40 +0200 | [diff] [blame] | 1792 | bt_cb(skb)->hci.req_flags |= HCI_REQ_START; |
Johan Hedberg | 11714b3 | 2013-03-05 20:37:47 +0200 | [diff] [blame] | 1793 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1794 | skb_queue_tail(&hdev->cmd_q, skb); |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 1795 | queue_work(hdev->workqueue, &hdev->cmd_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1796 | } |
| 1797 | } else { |
| 1798 | if (!capable(CAP_NET_RAW)) { |
| 1799 | err = -EPERM; |
| 1800 | goto drop; |
| 1801 | } |
| 1802 | |
Marcel Holtmann | d79f34e | 2015-11-05 07:10:00 +0100 | [diff] [blame] | 1803 | if (hci_skb_pkt_type(skb) != HCI_ACLDATA_PKT && |
| 1804 | hci_skb_pkt_type(skb) != HCI_SCODATA_PKT) { |
Marcel Holtmann | bb77543 | 2015-10-09 16:13:50 +0200 | [diff] [blame] | 1805 | err = -EINVAL; |
| 1806 | goto drop; |
| 1807 | } |
| 1808 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1809 | skb_queue_tail(&hdev->raw_q, skb); |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 1810 | queue_work(hdev->workqueue, &hdev->tx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1811 | } |
| 1812 | |
| 1813 | err = len; |
| 1814 | |
| 1815 | done: |
| 1816 | release_sock(sk); |
| 1817 | return err; |
| 1818 | |
| 1819 | drop: |
| 1820 | kfree_skb(skb); |
| 1821 | goto done; |
| 1822 | } |
| 1823 | |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame] | 1824 | static int hci_sock_setsockopt(struct socket *sock, int level, int optname, |
| 1825 | char __user *optval, unsigned int len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1826 | { |
| 1827 | struct hci_ufilter uf = { .opcode = 0 }; |
| 1828 | struct sock *sk = sock->sk; |
| 1829 | int err = 0, opt = 0; |
| 1830 | |
| 1831 | BT_DBG("sk %p, opt %d", sk, optname); |
| 1832 | |
Marcel Holtmann | 47b0f57 | 2016-08-27 20:23:37 +0200 | [diff] [blame] | 1833 | if (level != SOL_HCI) |
| 1834 | return -ENOPROTOOPT; |
| 1835 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1836 | lock_sock(sk); |
| 1837 | |
Marcel Holtmann | 2f39cdb | 2012-02-20 14:50:32 +0100 | [diff] [blame] | 1838 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { |
Marcel Holtmann | c2371e8 | 2013-08-26 09:29:39 -0700 | [diff] [blame] | 1839 | err = -EBADFD; |
Marcel Holtmann | 2f39cdb | 2012-02-20 14:50:32 +0100 | [diff] [blame] | 1840 | goto done; |
| 1841 | } |
| 1842 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1843 | switch (optname) { |
| 1844 | case HCI_DATA_DIR: |
| 1845 | if (get_user(opt, (int __user *)optval)) { |
| 1846 | err = -EFAULT; |
| 1847 | break; |
| 1848 | } |
| 1849 | |
| 1850 | if (opt) |
| 1851 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_DIR; |
| 1852 | else |
| 1853 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_DIR; |
| 1854 | break; |
| 1855 | |
| 1856 | case HCI_TIME_STAMP: |
| 1857 | if (get_user(opt, (int __user *)optval)) { |
| 1858 | err = -EFAULT; |
| 1859 | break; |
| 1860 | } |
| 1861 | |
| 1862 | if (opt) |
| 1863 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_TSTAMP; |
| 1864 | else |
| 1865 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_TSTAMP; |
| 1866 | break; |
| 1867 | |
| 1868 | case HCI_FILTER: |
Marcel Holtmann | 0878b66 | 2007-05-05 00:35:59 +0200 | [diff] [blame] | 1869 | { |
| 1870 | struct hci_filter *f = &hci_pi(sk)->filter; |
| 1871 | |
| 1872 | uf.type_mask = f->type_mask; |
| 1873 | uf.opcode = f->opcode; |
| 1874 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); |
| 1875 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); |
| 1876 | } |
| 1877 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1878 | len = min_t(unsigned int, len, sizeof(uf)); |
| 1879 | if (copy_from_user(&uf, optval, len)) { |
| 1880 | err = -EFAULT; |
| 1881 | break; |
| 1882 | } |
| 1883 | |
| 1884 | if (!capable(CAP_NET_RAW)) { |
| 1885 | uf.type_mask &= hci_sec_filter.type_mask; |
| 1886 | uf.event_mask[0] &= *((u32 *) hci_sec_filter.event_mask + 0); |
| 1887 | uf.event_mask[1] &= *((u32 *) hci_sec_filter.event_mask + 1); |
| 1888 | } |
| 1889 | |
| 1890 | { |
| 1891 | struct hci_filter *f = &hci_pi(sk)->filter; |
| 1892 | |
| 1893 | f->type_mask = uf.type_mask; |
| 1894 | f->opcode = uf.opcode; |
| 1895 | *((u32 *) f->event_mask + 0) = uf.event_mask[0]; |
| 1896 | *((u32 *) f->event_mask + 1) = uf.event_mask[1]; |
| 1897 | } |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1898 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1899 | |
| 1900 | default: |
| 1901 | err = -ENOPROTOOPT; |
| 1902 | break; |
| 1903 | } |
| 1904 | |
Marcel Holtmann | 2f39cdb | 2012-02-20 14:50:32 +0100 | [diff] [blame] | 1905 | done: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1906 | release_sock(sk); |
| 1907 | return err; |
| 1908 | } |
| 1909 | |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame] | 1910 | static int hci_sock_getsockopt(struct socket *sock, int level, int optname, |
| 1911 | char __user *optval, int __user *optlen) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1912 | { |
| 1913 | struct hci_ufilter uf; |
| 1914 | struct sock *sk = sock->sk; |
Marcel Holtmann | cedc546 | 2012-02-20 14:50:33 +0100 | [diff] [blame] | 1915 | int len, opt, err = 0; |
| 1916 | |
| 1917 | BT_DBG("sk %p, opt %d", sk, optname); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1918 | |
Marcel Holtmann | 47b0f57 | 2016-08-27 20:23:37 +0200 | [diff] [blame] | 1919 | if (level != SOL_HCI) |
| 1920 | return -ENOPROTOOPT; |
| 1921 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1922 | if (get_user(len, optlen)) |
| 1923 | return -EFAULT; |
| 1924 | |
Marcel Holtmann | cedc546 | 2012-02-20 14:50:33 +0100 | [diff] [blame] | 1925 | lock_sock(sk); |
| 1926 | |
| 1927 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { |
Marcel Holtmann | c2371e8 | 2013-08-26 09:29:39 -0700 | [diff] [blame] | 1928 | err = -EBADFD; |
Marcel Holtmann | cedc546 | 2012-02-20 14:50:33 +0100 | [diff] [blame] | 1929 | goto done; |
| 1930 | } |
| 1931 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1932 | switch (optname) { |
| 1933 | case HCI_DATA_DIR: |
| 1934 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_DIR) |
| 1935 | opt = 1; |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1936 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1937 | opt = 0; |
| 1938 | |
| 1939 | if (put_user(opt, optval)) |
Marcel Holtmann | cedc546 | 2012-02-20 14:50:33 +0100 | [diff] [blame] | 1940 | err = -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1941 | break; |
| 1942 | |
| 1943 | case HCI_TIME_STAMP: |
| 1944 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_TSTAMP) |
| 1945 | opt = 1; |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1946 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1947 | opt = 0; |
| 1948 | |
| 1949 | if (put_user(opt, optval)) |
Marcel Holtmann | cedc546 | 2012-02-20 14:50:33 +0100 | [diff] [blame] | 1950 | err = -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1951 | break; |
| 1952 | |
| 1953 | case HCI_FILTER: |
| 1954 | { |
| 1955 | struct hci_filter *f = &hci_pi(sk)->filter; |
| 1956 | |
Mathias Krause | e15ca9a | 2012-08-15 11:31:46 +0000 | [diff] [blame] | 1957 | memset(&uf, 0, sizeof(uf)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1958 | uf.type_mask = f->type_mask; |
| 1959 | uf.opcode = f->opcode; |
| 1960 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); |
| 1961 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); |
| 1962 | } |
| 1963 | |
| 1964 | len = min_t(unsigned int, len, sizeof(uf)); |
| 1965 | if (copy_to_user(optval, &uf, len)) |
Marcel Holtmann | cedc546 | 2012-02-20 14:50:33 +0100 | [diff] [blame] | 1966 | err = -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1967 | break; |
| 1968 | |
| 1969 | default: |
Marcel Holtmann | cedc546 | 2012-02-20 14:50:33 +0100 | [diff] [blame] | 1970 | err = -ENOPROTOOPT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1971 | break; |
| 1972 | } |
| 1973 | |
Marcel Holtmann | cedc546 | 2012-02-20 14:50:33 +0100 | [diff] [blame] | 1974 | done: |
| 1975 | release_sock(sk); |
| 1976 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1977 | } |
| 1978 | |
Nguyen Dinh Phi | c214be9 | 2021-10-08 03:04:24 +0800 | [diff] [blame] | 1979 | static void hci_sock_destruct(struct sock *sk) |
| 1980 | { |
| 1981 | skb_queue_purge(&sk->sk_receive_queue); |
| 1982 | skb_queue_purge(&sk->sk_write_queue); |
| 1983 | } |
| 1984 | |
Eric Dumazet | 90ddc4f | 2005-12-22 12:49:22 -0800 | [diff] [blame] | 1985 | static const struct proto_ops hci_sock_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1986 | .family = PF_BLUETOOTH, |
| 1987 | .owner = THIS_MODULE, |
| 1988 | .release = hci_sock_release, |
| 1989 | .bind = hci_sock_bind, |
| 1990 | .getname = hci_sock_getname, |
| 1991 | .sendmsg = hci_sock_sendmsg, |
| 1992 | .recvmsg = hci_sock_recvmsg, |
| 1993 | .ioctl = hci_sock_ioctl, |
| 1994 | .poll = datagram_poll, |
| 1995 | .listen = sock_no_listen, |
| 1996 | .shutdown = sock_no_shutdown, |
| 1997 | .setsockopt = hci_sock_setsockopt, |
| 1998 | .getsockopt = hci_sock_getsockopt, |
| 1999 | .connect = sock_no_connect, |
| 2000 | .socketpair = sock_no_socketpair, |
| 2001 | .accept = sock_no_accept, |
| 2002 | .mmap = sock_no_mmap |
| 2003 | }; |
| 2004 | |
| 2005 | static struct proto hci_sk_proto = { |
| 2006 | .name = "HCI", |
| 2007 | .owner = THIS_MODULE, |
| 2008 | .obj_size = sizeof(struct hci_pinfo) |
| 2009 | }; |
| 2010 | |
Eric Paris | 3f378b6 | 2009-11-05 22:18:14 -0800 | [diff] [blame] | 2011 | static int hci_sock_create(struct net *net, struct socket *sock, int protocol, |
| 2012 | int kern) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2013 | { |
| 2014 | struct sock *sk; |
| 2015 | |
| 2016 | BT_DBG("sock %p", sock); |
| 2017 | |
| 2018 | if (sock->type != SOCK_RAW) |
| 2019 | return -ESOCKTNOSUPPORT; |
| 2020 | |
| 2021 | sock->ops = &hci_sock_ops; |
| 2022 | |
Eric W. Biederman | 11aa9c2 | 2015-05-08 21:09:13 -0500 | [diff] [blame] | 2023 | sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hci_sk_proto, kern); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2024 | if (!sk) |
| 2025 | return -ENOMEM; |
| 2026 | |
| 2027 | sock_init_data(sock, sk); |
| 2028 | |
| 2029 | sock_reset_flag(sk, SOCK_ZAPPED); |
| 2030 | |
| 2031 | sk->sk_protocol = protocol; |
| 2032 | |
| 2033 | sock->state = SS_UNCONNECTED; |
| 2034 | sk->sk_state = BT_OPEN; |
Nguyen Dinh Phi | c214be9 | 2021-10-08 03:04:24 +0800 | [diff] [blame] | 2035 | sk->sk_destruct = hci_sock_destruct; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2036 | |
| 2037 | bt_sock_link(&hci_sk_list, sk); |
| 2038 | return 0; |
| 2039 | } |
| 2040 | |
Stephen Hemminger | ec1b4cf | 2009-10-05 05:58:39 +0000 | [diff] [blame] | 2041 | static const struct net_proto_family hci_sock_family_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2042 | .family = PF_BLUETOOTH, |
| 2043 | .owner = THIS_MODULE, |
| 2044 | .create = hci_sock_create, |
| 2045 | }; |
| 2046 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2047 | int __init hci_sock_init(void) |
| 2048 | { |
| 2049 | int err; |
| 2050 | |
Marcel Holtmann | b0a8e28 | 2015-01-11 15:18:17 -0800 | [diff] [blame] | 2051 | BUILD_BUG_ON(sizeof(struct sockaddr_hci) > sizeof(struct sockaddr)); |
| 2052 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2053 | err = proto_register(&hci_sk_proto, 0); |
| 2054 | if (err < 0) |
| 2055 | return err; |
| 2056 | |
| 2057 | err = bt_sock_register(BTPROTO_HCI, &hci_sock_family_ops); |
Masatake YAMATO | f7c8663 | 2012-07-26 01:28:36 +0900 | [diff] [blame] | 2058 | if (err < 0) { |
| 2059 | BT_ERR("HCI socket registration failed"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2060 | goto error; |
Masatake YAMATO | f7c8663 | 2012-07-26 01:28:36 +0900 | [diff] [blame] | 2061 | } |
| 2062 | |
Al Viro | b031661 | 2013-04-04 19:14:33 -0400 | [diff] [blame] | 2063 | err = bt_procfs_init(&init_net, "hci", &hci_sk_list, NULL); |
Masatake YAMATO | f7c8663 | 2012-07-26 01:28:36 +0900 | [diff] [blame] | 2064 | if (err < 0) { |
| 2065 | BT_ERR("Failed to create HCI proc file"); |
| 2066 | bt_sock_unregister(BTPROTO_HCI); |
| 2067 | goto error; |
| 2068 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2069 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2070 | BT_INFO("HCI socket layer initialized"); |
| 2071 | |
| 2072 | return 0; |
| 2073 | |
| 2074 | error: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2075 | proto_unregister(&hci_sk_proto); |
| 2076 | return err; |
| 2077 | } |
| 2078 | |
Anand Gadiyar | b7440a14 | 2011-02-22 12:43:09 +0530 | [diff] [blame] | 2079 | void hci_sock_cleanup(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2080 | { |
Masatake YAMATO | f7c8663 | 2012-07-26 01:28:36 +0900 | [diff] [blame] | 2081 | bt_procfs_cleanup(&init_net, "hci"); |
David Herrmann | 5e9d7f8 | 2013-02-24 19:36:51 +0100 | [diff] [blame] | 2082 | bt_sock_unregister(BTPROTO_HCI); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2083 | proto_unregister(&hci_sk_proto); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2084 | } |