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> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include <asm/unaligned.h> |
| 29 | |
| 30 | #include <net/bluetooth/bluetooth.h> |
| 31 | #include <net/bluetooth/hci_core.h> |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 32 | #include <net/bluetooth/hci_mon.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 34 | static atomic_t monitor_promisc = ATOMIC_INIT(0); |
| 35 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | /* ----- HCI socket interface ----- */ |
| 37 | |
| 38 | static inline int hci_test_bit(int nr, void *addr) |
| 39 | { |
| 40 | return *((__u32 *) addr + (nr >> 5)) & ((__u32) 1 << (nr & 31)); |
| 41 | } |
| 42 | |
| 43 | /* Security filter */ |
Marcel Holtmann | 3ad254f | 2014-07-11 05:36:39 +0200 | [diff] [blame] | 44 | #define HCI_SFLT_MAX_OGF 5 |
| 45 | |
| 46 | struct hci_sec_filter { |
| 47 | __u32 type_mask; |
| 48 | __u32 event_mask[2]; |
| 49 | __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4]; |
| 50 | }; |
| 51 | |
Marcel Holtmann | 7e67c11 | 2014-07-11 05:36:40 +0200 | [diff] [blame^] | 52 | static const struct hci_sec_filter hci_sec_filter = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | /* Packet types */ |
| 54 | 0x10, |
| 55 | /* Events */ |
Marcel Holtmann | dd7f552 | 2005-10-28 19:20:53 +0200 | [diff] [blame] | 56 | { 0x1000d9fe, 0x0000b00c }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | /* Commands */ |
| 58 | { |
| 59 | { 0x0 }, |
| 60 | /* OGF_LINK_CTL */ |
Marcel Holtmann | 7c631a6 | 2007-09-09 08:39:43 +0200 | [diff] [blame] | 61 | { 0xbe000006, 0x00000001, 0x00000000, 0x00 }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | /* OGF_LINK_POLICY */ |
Marcel Holtmann | 7c631a6 | 2007-09-09 08:39:43 +0200 | [diff] [blame] | 63 | { 0x00005200, 0x00000000, 0x00000000, 0x00 }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | /* OGF_HOST_CTL */ |
Marcel Holtmann | 7c631a6 | 2007-09-09 08:39:43 +0200 | [diff] [blame] | 65 | { 0xaab00200, 0x2b402aaa, 0x05220154, 0x00 }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | /* OGF_INFO_PARAM */ |
Marcel Holtmann | 7c631a6 | 2007-09-09 08:39:43 +0200 | [diff] [blame] | 67 | { 0x000002be, 0x00000000, 0x00000000, 0x00 }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | /* OGF_STATUS_PARAM */ |
Marcel Holtmann | 7c631a6 | 2007-09-09 08:39:43 +0200 | [diff] [blame] | 69 | { 0x000000ea, 0x00000000, 0x00000000, 0x00 } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | } |
| 71 | }; |
| 72 | |
| 73 | static struct bt_sock_list hci_sk_list = { |
Robert P. J. Day | d5fb296 | 2008-03-28 16:17:38 -0700 | [diff] [blame] | 74 | .lock = __RW_LOCK_UNLOCKED(hci_sk_list.lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | }; |
| 76 | |
Marcel Holtmann | f81fe64 | 2013-08-25 23:25:15 -0700 | [diff] [blame] | 77 | static bool is_filtered_packet(struct sock *sk, struct sk_buff *skb) |
| 78 | { |
| 79 | struct hci_filter *flt; |
| 80 | int flt_type, flt_event; |
| 81 | |
| 82 | /* Apply filter */ |
| 83 | flt = &hci_pi(sk)->filter; |
| 84 | |
| 85 | if (bt_cb(skb)->pkt_type == HCI_VENDOR_PKT) |
| 86 | flt_type = 0; |
| 87 | else |
| 88 | flt_type = bt_cb(skb)->pkt_type & HCI_FLT_TYPE_BITS; |
| 89 | |
| 90 | if (!test_bit(flt_type, &flt->type_mask)) |
| 91 | return true; |
| 92 | |
| 93 | /* Extra filter for event packets only */ |
| 94 | if (bt_cb(skb)->pkt_type != HCI_EVENT_PKT) |
| 95 | return false; |
| 96 | |
| 97 | flt_event = (*(__u8 *)skb->data & HCI_FLT_EVENT_BITS); |
| 98 | |
| 99 | if (!hci_test_bit(flt_event, &flt->event_mask)) |
| 100 | return true; |
| 101 | |
| 102 | /* Check filter only when opcode is set */ |
| 103 | if (!flt->opcode) |
| 104 | return false; |
| 105 | |
| 106 | if (flt_event == HCI_EV_CMD_COMPLETE && |
| 107 | flt->opcode != get_unaligned((__le16 *)(skb->data + 3))) |
| 108 | return true; |
| 109 | |
| 110 | if (flt_event == HCI_EV_CMD_STATUS && |
| 111 | flt->opcode != get_unaligned((__le16 *)(skb->data + 4))) |
| 112 | return true; |
| 113 | |
| 114 | return false; |
| 115 | } |
| 116 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | /* Send frame to RAW socket */ |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 118 | 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] | 119 | { |
| 120 | struct sock *sk; |
Marcel Holtmann | e0edf37 | 2012-02-20 14:50:36 +0100 | [diff] [blame] | 121 | struct sk_buff *skb_copy = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | |
| 123 | BT_DBG("hdev %p len %d", hdev, skb->len); |
| 124 | |
| 125 | read_lock(&hci_sk_list.lock); |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 126 | |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 127 | sk_for_each(sk, &hci_sk_list.head) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | struct sk_buff *nskb; |
| 129 | |
| 130 | if (sk->sk_state != BT_BOUND || hci_pi(sk)->hdev != hdev) |
| 131 | continue; |
| 132 | |
| 133 | /* Don't send frame to the socket it came from */ |
| 134 | if (skb->sk == sk) |
| 135 | continue; |
| 136 | |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 137 | if (hci_pi(sk)->channel == HCI_CHANNEL_RAW) { |
| 138 | if (is_filtered_packet(sk, skb)) |
| 139 | continue; |
| 140 | } else if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { |
| 141 | if (!bt_cb(skb)->incoming) |
| 142 | continue; |
| 143 | if (bt_cb(skb)->pkt_type != HCI_EVENT_PKT && |
| 144 | bt_cb(skb)->pkt_type != HCI_ACLDATA_PKT && |
| 145 | bt_cb(skb)->pkt_type != HCI_SCODATA_PKT) |
| 146 | continue; |
| 147 | } else { |
| 148 | /* Don't send frame to other channel types */ |
Johan Hedberg | a40c406 | 2010-12-08 00:21:07 +0200 | [diff] [blame] | 149 | continue; |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 150 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | |
Marcel Holtmann | e0edf37 | 2012-02-20 14:50:36 +0100 | [diff] [blame] | 152 | if (!skb_copy) { |
| 153 | /* Create a private copy with headroom */ |
Octavian Purdila | bad93e9 | 2014-06-12 01:36:26 +0300 | [diff] [blame] | 154 | skb_copy = __pskb_copy_fclone(skb, 1, GFP_ATOMIC, true); |
Marcel Holtmann | e0edf37 | 2012-02-20 14:50:36 +0100 | [diff] [blame] | 155 | if (!skb_copy) |
| 156 | continue; |
| 157 | |
| 158 | /* Put type byte before the data */ |
| 159 | memcpy(skb_push(skb_copy, 1), &bt_cb(skb)->pkt_type, 1); |
| 160 | } |
| 161 | |
| 162 | nskb = skb_clone(skb_copy, GFP_ATOMIC); |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 163 | if (!nskb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | continue; |
| 165 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | if (sock_queue_rcv_skb(sk, nskb)) |
| 167 | kfree_skb(nskb); |
| 168 | } |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 169 | |
| 170 | read_unlock(&hci_sk_list.lock); |
Marcel Holtmann | e0edf37 | 2012-02-20 14:50:36 +0100 | [diff] [blame] | 171 | |
| 172 | kfree_skb(skb_copy); |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 173 | } |
| 174 | |
| 175 | /* Send frame to control socket */ |
| 176 | void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk) |
| 177 | { |
| 178 | struct sock *sk; |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 179 | |
| 180 | BT_DBG("len %d", skb->len); |
| 181 | |
| 182 | read_lock(&hci_sk_list.lock); |
| 183 | |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 184 | sk_for_each(sk, &hci_sk_list.head) { |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 185 | struct sk_buff *nskb; |
| 186 | |
| 187 | /* Skip the original socket */ |
| 188 | if (sk == skip_sk) |
| 189 | continue; |
| 190 | |
| 191 | if (sk->sk_state != BT_BOUND) |
| 192 | continue; |
| 193 | |
| 194 | if (hci_pi(sk)->channel != HCI_CHANNEL_CONTROL) |
| 195 | continue; |
| 196 | |
| 197 | nskb = skb_clone(skb, GFP_ATOMIC); |
| 198 | if (!nskb) |
| 199 | continue; |
| 200 | |
| 201 | if (sock_queue_rcv_skb(sk, nskb)) |
| 202 | kfree_skb(nskb); |
| 203 | } |
| 204 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | read_unlock(&hci_sk_list.lock); |
| 206 | } |
| 207 | |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 208 | /* Send frame to monitor socket */ |
| 209 | void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb) |
| 210 | { |
| 211 | struct sock *sk; |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 212 | struct sk_buff *skb_copy = NULL; |
| 213 | __le16 opcode; |
| 214 | |
| 215 | if (!atomic_read(&monitor_promisc)) |
| 216 | return; |
| 217 | |
| 218 | BT_DBG("hdev %p len %d", hdev, skb->len); |
| 219 | |
| 220 | switch (bt_cb(skb)->pkt_type) { |
| 221 | case HCI_COMMAND_PKT: |
Joe Perches | dcf4adb | 2014-03-12 10:52:35 -0700 | [diff] [blame] | 222 | opcode = cpu_to_le16(HCI_MON_COMMAND_PKT); |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 223 | break; |
| 224 | case HCI_EVENT_PKT: |
Joe Perches | dcf4adb | 2014-03-12 10:52:35 -0700 | [diff] [blame] | 225 | opcode = cpu_to_le16(HCI_MON_EVENT_PKT); |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 226 | break; |
| 227 | case HCI_ACLDATA_PKT: |
| 228 | if (bt_cb(skb)->incoming) |
Joe Perches | dcf4adb | 2014-03-12 10:52:35 -0700 | [diff] [blame] | 229 | opcode = cpu_to_le16(HCI_MON_ACL_RX_PKT); |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 230 | else |
Joe Perches | dcf4adb | 2014-03-12 10:52:35 -0700 | [diff] [blame] | 231 | opcode = cpu_to_le16(HCI_MON_ACL_TX_PKT); |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 232 | break; |
| 233 | case HCI_SCODATA_PKT: |
| 234 | if (bt_cb(skb)->incoming) |
Joe Perches | dcf4adb | 2014-03-12 10:52:35 -0700 | [diff] [blame] | 235 | opcode = cpu_to_le16(HCI_MON_SCO_RX_PKT); |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 236 | else |
Joe Perches | dcf4adb | 2014-03-12 10:52:35 -0700 | [diff] [blame] | 237 | opcode = cpu_to_le16(HCI_MON_SCO_TX_PKT); |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 238 | break; |
| 239 | default: |
| 240 | return; |
| 241 | } |
| 242 | |
| 243 | read_lock(&hci_sk_list.lock); |
| 244 | |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 245 | sk_for_each(sk, &hci_sk_list.head) { |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 246 | struct sk_buff *nskb; |
| 247 | |
| 248 | if (sk->sk_state != BT_BOUND) |
| 249 | continue; |
| 250 | |
| 251 | if (hci_pi(sk)->channel != HCI_CHANNEL_MONITOR) |
| 252 | continue; |
| 253 | |
| 254 | if (!skb_copy) { |
| 255 | struct hci_mon_hdr *hdr; |
| 256 | |
| 257 | /* Create a private copy with headroom */ |
Octavian Purdila | bad93e9 | 2014-06-12 01:36:26 +0300 | [diff] [blame] | 258 | skb_copy = __pskb_copy_fclone(skb, HCI_MON_HDR_SIZE, |
| 259 | GFP_ATOMIC, true); |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 260 | if (!skb_copy) |
| 261 | continue; |
| 262 | |
| 263 | /* Put header before the data */ |
| 264 | hdr = (void *) skb_push(skb_copy, HCI_MON_HDR_SIZE); |
| 265 | hdr->opcode = opcode; |
| 266 | hdr->index = cpu_to_le16(hdev->id); |
| 267 | hdr->len = cpu_to_le16(skb->len); |
| 268 | } |
| 269 | |
| 270 | nskb = skb_clone(skb_copy, GFP_ATOMIC); |
| 271 | if (!nskb) |
| 272 | continue; |
| 273 | |
| 274 | if (sock_queue_rcv_skb(sk, nskb)) |
| 275 | kfree_skb(nskb); |
| 276 | } |
| 277 | |
| 278 | read_unlock(&hci_sk_list.lock); |
| 279 | |
| 280 | kfree_skb(skb_copy); |
| 281 | } |
| 282 | |
| 283 | static void send_monitor_event(struct sk_buff *skb) |
| 284 | { |
| 285 | struct sock *sk; |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 286 | |
| 287 | BT_DBG("len %d", skb->len); |
| 288 | |
| 289 | read_lock(&hci_sk_list.lock); |
| 290 | |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 291 | sk_for_each(sk, &hci_sk_list.head) { |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 292 | struct sk_buff *nskb; |
| 293 | |
| 294 | if (sk->sk_state != BT_BOUND) |
| 295 | continue; |
| 296 | |
| 297 | if (hci_pi(sk)->channel != HCI_CHANNEL_MONITOR) |
| 298 | continue; |
| 299 | |
| 300 | nskb = skb_clone(skb, GFP_ATOMIC); |
| 301 | if (!nskb) |
| 302 | continue; |
| 303 | |
| 304 | if (sock_queue_rcv_skb(sk, nskb)) |
| 305 | kfree_skb(nskb); |
| 306 | } |
| 307 | |
| 308 | read_unlock(&hci_sk_list.lock); |
| 309 | } |
| 310 | |
| 311 | static struct sk_buff *create_monitor_event(struct hci_dev *hdev, int event) |
| 312 | { |
| 313 | struct hci_mon_hdr *hdr; |
| 314 | struct hci_mon_new_index *ni; |
| 315 | struct sk_buff *skb; |
| 316 | __le16 opcode; |
| 317 | |
| 318 | switch (event) { |
| 319 | case HCI_DEV_REG: |
| 320 | skb = bt_skb_alloc(HCI_MON_NEW_INDEX_SIZE, GFP_ATOMIC); |
| 321 | if (!skb) |
| 322 | return NULL; |
| 323 | |
| 324 | ni = (void *) skb_put(skb, HCI_MON_NEW_INDEX_SIZE); |
| 325 | ni->type = hdev->dev_type; |
| 326 | ni->bus = hdev->bus; |
| 327 | bacpy(&ni->bdaddr, &hdev->bdaddr); |
| 328 | memcpy(ni->name, hdev->name, 8); |
| 329 | |
Joe Perches | dcf4adb | 2014-03-12 10:52:35 -0700 | [diff] [blame] | 330 | opcode = cpu_to_le16(HCI_MON_NEW_INDEX); |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 331 | break; |
| 332 | |
| 333 | case HCI_DEV_UNREG: |
| 334 | skb = bt_skb_alloc(0, GFP_ATOMIC); |
| 335 | if (!skb) |
| 336 | return NULL; |
| 337 | |
Joe Perches | dcf4adb | 2014-03-12 10:52:35 -0700 | [diff] [blame] | 338 | opcode = cpu_to_le16(HCI_MON_DEL_INDEX); |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 339 | break; |
| 340 | |
| 341 | default: |
| 342 | return NULL; |
| 343 | } |
| 344 | |
| 345 | __net_timestamp(skb); |
| 346 | |
| 347 | hdr = (void *) skb_push(skb, HCI_MON_HDR_SIZE); |
| 348 | hdr->opcode = opcode; |
| 349 | hdr->index = cpu_to_le16(hdev->id); |
| 350 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); |
| 351 | |
| 352 | return skb; |
| 353 | } |
| 354 | |
| 355 | static void send_monitor_replay(struct sock *sk) |
| 356 | { |
| 357 | struct hci_dev *hdev; |
| 358 | |
| 359 | read_lock(&hci_dev_list_lock); |
| 360 | |
| 361 | list_for_each_entry(hdev, &hci_dev_list, list) { |
| 362 | struct sk_buff *skb; |
| 363 | |
| 364 | skb = create_monitor_event(hdev, HCI_DEV_REG); |
| 365 | if (!skb) |
| 366 | continue; |
| 367 | |
| 368 | if (sock_queue_rcv_skb(sk, skb)) |
| 369 | kfree_skb(skb); |
| 370 | } |
| 371 | |
| 372 | read_unlock(&hci_dev_list_lock); |
| 373 | } |
| 374 | |
Marcel Holtmann | 040030e | 2012-02-20 14:50:37 +0100 | [diff] [blame] | 375 | /* Generate internal stack event */ |
| 376 | static void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data) |
| 377 | { |
| 378 | struct hci_event_hdr *hdr; |
| 379 | struct hci_ev_stack_internal *ev; |
| 380 | struct sk_buff *skb; |
| 381 | |
| 382 | skb = bt_skb_alloc(HCI_EVENT_HDR_SIZE + sizeof(*ev) + dlen, GFP_ATOMIC); |
| 383 | if (!skb) |
| 384 | return; |
| 385 | |
| 386 | hdr = (void *) skb_put(skb, HCI_EVENT_HDR_SIZE); |
| 387 | hdr->evt = HCI_EV_STACK_INTERNAL; |
| 388 | hdr->plen = sizeof(*ev) + dlen; |
| 389 | |
| 390 | ev = (void *) skb_put(skb, sizeof(*ev) + dlen); |
| 391 | ev->type = type; |
| 392 | memcpy(ev->data, data, dlen); |
| 393 | |
| 394 | bt_cb(skb)->incoming = 1; |
| 395 | __net_timestamp(skb); |
| 396 | |
| 397 | bt_cb(skb)->pkt_type = HCI_EVENT_PKT; |
Marcel Holtmann | 040030e | 2012-02-20 14:50:37 +0100 | [diff] [blame] | 398 | hci_send_to_sock(hdev, skb); |
| 399 | kfree_skb(skb); |
| 400 | } |
| 401 | |
| 402 | void hci_sock_dev_event(struct hci_dev *hdev, int event) |
| 403 | { |
| 404 | struct hci_ev_si_device ev; |
| 405 | |
| 406 | BT_DBG("hdev %s event %d", hdev->name, event); |
| 407 | |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 408 | /* Send event to monitor */ |
| 409 | if (atomic_read(&monitor_promisc)) { |
| 410 | struct sk_buff *skb; |
| 411 | |
| 412 | skb = create_monitor_event(hdev, event); |
| 413 | if (skb) { |
| 414 | send_monitor_event(skb); |
| 415 | kfree_skb(skb); |
| 416 | } |
| 417 | } |
| 418 | |
Marcel Holtmann | 040030e | 2012-02-20 14:50:37 +0100 | [diff] [blame] | 419 | /* Send event to sockets */ |
| 420 | ev.event = event; |
| 421 | ev.dev_id = hdev->id; |
| 422 | hci_si_event(NULL, HCI_EV_SI_DEVICE, sizeof(ev), &ev); |
| 423 | |
| 424 | if (event == HCI_DEV_UNREG) { |
| 425 | struct sock *sk; |
Marcel Holtmann | 040030e | 2012-02-20 14:50:37 +0100 | [diff] [blame] | 426 | |
| 427 | /* Detach sockets from device */ |
| 428 | read_lock(&hci_sk_list.lock); |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 429 | sk_for_each(sk, &hci_sk_list.head) { |
Marcel Holtmann | 040030e | 2012-02-20 14:50:37 +0100 | [diff] [blame] | 430 | bh_lock_sock_nested(sk); |
| 431 | if (hci_pi(sk)->hdev == hdev) { |
| 432 | hci_pi(sk)->hdev = NULL; |
| 433 | sk->sk_err = EPIPE; |
| 434 | sk->sk_state = BT_OPEN; |
| 435 | sk->sk_state_change(sk); |
| 436 | |
| 437 | hci_dev_put(hdev); |
| 438 | } |
| 439 | bh_unlock_sock(sk); |
| 440 | } |
| 441 | read_unlock(&hci_sk_list.lock); |
| 442 | } |
| 443 | } |
| 444 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | static int hci_sock_release(struct socket *sock) |
| 446 | { |
| 447 | struct sock *sk = sock->sk; |
Marcel Holtmann | 7b005bd | 2006-02-13 11:40:03 +0100 | [diff] [blame] | 448 | struct hci_dev *hdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | |
| 450 | BT_DBG("sock %p sk %p", sock, sk); |
| 451 | |
| 452 | if (!sk) |
| 453 | return 0; |
| 454 | |
Marcel Holtmann | 7b005bd | 2006-02-13 11:40:03 +0100 | [diff] [blame] | 455 | hdev = hci_pi(sk)->hdev; |
| 456 | |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 457 | if (hci_pi(sk)->channel == HCI_CHANNEL_MONITOR) |
| 458 | atomic_dec(&monitor_promisc); |
| 459 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | bt_sock_unlink(&hci_sk_list, sk); |
| 461 | |
| 462 | if (hdev) { |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 463 | if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { |
Marcel Holtmann | 0602a8a | 2014-07-02 21:30:54 +0200 | [diff] [blame] | 464 | mgmt_index_added(hdev); |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 465 | clear_bit(HCI_USER_CHANNEL, &hdev->dev_flags); |
| 466 | hci_dev_close(hdev->id); |
| 467 | } |
| 468 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | atomic_dec(&hdev->promisc); |
| 470 | hci_dev_put(hdev); |
| 471 | } |
| 472 | |
| 473 | sock_orphan(sk); |
| 474 | |
| 475 | skb_queue_purge(&sk->sk_receive_queue); |
| 476 | skb_queue_purge(&sk->sk_write_queue); |
| 477 | |
| 478 | sock_put(sk); |
| 479 | return 0; |
| 480 | } |
| 481 | |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 482 | 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] | 483 | { |
| 484 | bdaddr_t bdaddr; |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 485 | int err; |
Johan Hedberg | f035856 | 2010-05-18 13:20:32 +0200 | [diff] [blame] | 486 | |
| 487 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) |
| 488 | return -EFAULT; |
| 489 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 490 | hci_dev_lock(hdev); |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 491 | |
Johan Hedberg | dcc36c1 | 2014-07-09 12:59:13 +0300 | [diff] [blame] | 492 | err = hci_bdaddr_list_add(&hdev->blacklist, &bdaddr, BDADDR_BREDR); |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 493 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 494 | hci_dev_unlock(hdev); |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 495 | |
| 496 | return err; |
Johan Hedberg | f035856 | 2010-05-18 13:20:32 +0200 | [diff] [blame] | 497 | } |
| 498 | |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 499 | 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] | 500 | { |
| 501 | bdaddr_t bdaddr; |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 502 | int err; |
Johan Hedberg | f035856 | 2010-05-18 13:20:32 +0200 | [diff] [blame] | 503 | |
| 504 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) |
| 505 | return -EFAULT; |
| 506 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 507 | hci_dev_lock(hdev); |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 508 | |
Johan Hedberg | dcc36c1 | 2014-07-09 12:59:13 +0300 | [diff] [blame] | 509 | err = hci_bdaddr_list_del(&hdev->blacklist, &bdaddr, BDADDR_BREDR); |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 510 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 511 | hci_dev_unlock(hdev); |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 512 | |
| 513 | return err; |
Johan Hedberg | f035856 | 2010-05-18 13:20:32 +0200 | [diff] [blame] | 514 | } |
| 515 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 516 | /* Ioctls that require bound socket */ |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 517 | static int hci_sock_bound_ioctl(struct sock *sk, unsigned int cmd, |
| 518 | unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | { |
| 520 | struct hci_dev *hdev = hci_pi(sk)->hdev; |
| 521 | |
| 522 | if (!hdev) |
| 523 | return -EBADFD; |
| 524 | |
Marcel Holtmann | 0736cfa | 2013-08-26 21:40:51 -0700 | [diff] [blame] | 525 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) |
| 526 | return -EBUSY; |
| 527 | |
Marcel Holtmann | 4a96440 | 2014-07-02 19:10:33 +0200 | [diff] [blame] | 528 | if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) |
Marcel Holtmann | fee746b | 2014-06-29 12:13:05 +0200 | [diff] [blame] | 529 | return -EOPNOTSUPP; |
| 530 | |
Marcel Holtmann | 5b69bef5 | 2013-10-10 10:02:08 -0700 | [diff] [blame] | 531 | if (hdev->dev_type != HCI_BREDR) |
| 532 | return -EOPNOTSUPP; |
| 533 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | switch (cmd) { |
| 535 | case HCISETRAW: |
| 536 | if (!capable(CAP_NET_ADMIN)) |
Zhao Hongjiang | bf5b30b | 2012-09-20 22:37:25 +0000 | [diff] [blame] | 537 | return -EPERM; |
Marcel Holtmann | db59668 | 2014-04-16 20:04:38 -0700 | [diff] [blame] | 538 | return -EOPNOTSUPP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | case HCIGETCONNINFO: |
Marcel Holtmann | 40be492 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 541 | return hci_get_conn_info(hdev, (void __user *) arg); |
| 542 | |
| 543 | case HCIGETAUTHINFO: |
| 544 | return hci_get_auth_info(hdev, (void __user *) arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | |
Johan Hedberg | f035856 | 2010-05-18 13:20:32 +0200 | [diff] [blame] | 546 | case HCIBLOCKADDR: |
| 547 | if (!capable(CAP_NET_ADMIN)) |
Zhao Hongjiang | bf5b30b | 2012-09-20 22:37:25 +0000 | [diff] [blame] | 548 | return -EPERM; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 549 | return hci_sock_blacklist_add(hdev, (void __user *) arg); |
Johan Hedberg | f035856 | 2010-05-18 13:20:32 +0200 | [diff] [blame] | 550 | |
| 551 | case HCIUNBLOCKADDR: |
| 552 | if (!capable(CAP_NET_ADMIN)) |
Zhao Hongjiang | bf5b30b | 2012-09-20 22:37:25 +0000 | [diff] [blame] | 553 | return -EPERM; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 554 | return hci_sock_blacklist_del(hdev, (void __user *) arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | } |
Marcel Holtmann | 0736cfa | 2013-08-26 21:40:51 -0700 | [diff] [blame] | 556 | |
Marcel Holtmann | 324d36e | 2013-10-10 10:50:06 -0700 | [diff] [blame] | 557 | return -ENOIOCTLCMD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | } |
| 559 | |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame] | 560 | static int hci_sock_ioctl(struct socket *sock, unsigned int cmd, |
| 561 | unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | { |
Marcel Holtmann | 40be492 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 563 | void __user *argp = (void __user *) arg; |
Marcel Holtmann | 0736cfa | 2013-08-26 21:40:51 -0700 | [diff] [blame] | 564 | struct sock *sk = sock->sk; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | int err; |
| 566 | |
| 567 | BT_DBG("cmd %x arg %lx", cmd, arg); |
| 568 | |
Marcel Holtmann | c1c4f95 | 2013-08-26 09:39:55 -0700 | [diff] [blame] | 569 | lock_sock(sk); |
| 570 | |
| 571 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { |
| 572 | err = -EBADFD; |
| 573 | goto done; |
| 574 | } |
| 575 | |
| 576 | release_sock(sk); |
| 577 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | switch (cmd) { |
| 579 | case HCIGETDEVLIST: |
| 580 | return hci_get_dev_list(argp); |
| 581 | |
| 582 | case HCIGETDEVINFO: |
| 583 | return hci_get_dev_info(argp); |
| 584 | |
| 585 | case HCIGETCONNLIST: |
| 586 | return hci_get_conn_list(argp); |
| 587 | |
| 588 | case HCIDEVUP: |
| 589 | if (!capable(CAP_NET_ADMIN)) |
Zhao Hongjiang | bf5b30b | 2012-09-20 22:37:25 +0000 | [diff] [blame] | 590 | return -EPERM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | return hci_dev_open(arg); |
| 592 | |
| 593 | case HCIDEVDOWN: |
| 594 | if (!capable(CAP_NET_ADMIN)) |
Zhao Hongjiang | bf5b30b | 2012-09-20 22:37:25 +0000 | [diff] [blame] | 595 | return -EPERM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | return hci_dev_close(arg); |
| 597 | |
| 598 | case HCIDEVRESET: |
| 599 | if (!capable(CAP_NET_ADMIN)) |
Zhao Hongjiang | bf5b30b | 2012-09-20 22:37:25 +0000 | [diff] [blame] | 600 | return -EPERM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 601 | return hci_dev_reset(arg); |
| 602 | |
| 603 | case HCIDEVRESTAT: |
| 604 | if (!capable(CAP_NET_ADMIN)) |
Zhao Hongjiang | bf5b30b | 2012-09-20 22:37:25 +0000 | [diff] [blame] | 605 | return -EPERM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | return hci_dev_reset_stat(arg); |
| 607 | |
| 608 | case HCISETSCAN: |
| 609 | case HCISETAUTH: |
| 610 | case HCISETENCRYPT: |
| 611 | case HCISETPTYPE: |
| 612 | case HCISETLINKPOL: |
| 613 | case HCISETLINKMODE: |
| 614 | case HCISETACLMTU: |
| 615 | case HCISETSCOMTU: |
| 616 | if (!capable(CAP_NET_ADMIN)) |
Zhao Hongjiang | bf5b30b | 2012-09-20 22:37:25 +0000 | [diff] [blame] | 617 | return -EPERM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | return hci_dev_cmd(cmd, argp); |
| 619 | |
| 620 | case HCIINQUIRY: |
| 621 | return hci_inquiry(argp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | } |
Marcel Holtmann | c1c4f95 | 2013-08-26 09:39:55 -0700 | [diff] [blame] | 623 | |
| 624 | lock_sock(sk); |
| 625 | |
| 626 | err = hci_sock_bound_ioctl(sk, cmd, arg); |
| 627 | |
| 628 | done: |
| 629 | release_sock(sk); |
| 630 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | } |
| 632 | |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame] | 633 | static int hci_sock_bind(struct socket *sock, struct sockaddr *addr, |
| 634 | int addr_len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | { |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 636 | struct sockaddr_hci haddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | struct sock *sk = sock->sk; |
| 638 | struct hci_dev *hdev = NULL; |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 639 | int len, err = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | |
| 641 | BT_DBG("sock %p sk %p", sock, sk); |
| 642 | |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 643 | if (!addr) |
| 644 | return -EINVAL; |
| 645 | |
| 646 | memset(&haddr, 0, sizeof(haddr)); |
| 647 | len = min_t(unsigned int, sizeof(haddr), addr_len); |
| 648 | memcpy(&haddr, addr, len); |
| 649 | |
| 650 | if (haddr.hci_family != AF_BLUETOOTH) |
| 651 | return -EINVAL; |
| 652 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | lock_sock(sk); |
| 654 | |
Marcel Holtmann | 7cc2ade | 2012-02-20 14:50:35 +0100 | [diff] [blame] | 655 | if (sk->sk_state == BT_BOUND) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | err = -EALREADY; |
| 657 | goto done; |
| 658 | } |
| 659 | |
Marcel Holtmann | 7cc2ade | 2012-02-20 14:50:35 +0100 | [diff] [blame] | 660 | switch (haddr.hci_channel) { |
| 661 | case HCI_CHANNEL_RAW: |
| 662 | if (hci_pi(sk)->hdev) { |
| 663 | err = -EALREADY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | goto done; |
| 665 | } |
| 666 | |
Marcel Holtmann | 7cc2ade | 2012-02-20 14:50:35 +0100 | [diff] [blame] | 667 | if (haddr.hci_dev != HCI_DEV_NONE) { |
| 668 | hdev = hci_dev_get(haddr.hci_dev); |
| 669 | if (!hdev) { |
| 670 | err = -ENODEV; |
| 671 | goto done; |
| 672 | } |
| 673 | |
| 674 | atomic_inc(&hdev->promisc); |
| 675 | } |
| 676 | |
| 677 | hci_pi(sk)->hdev = hdev; |
| 678 | break; |
| 679 | |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 680 | case HCI_CHANNEL_USER: |
| 681 | if (hci_pi(sk)->hdev) { |
| 682 | err = -EALREADY; |
| 683 | goto done; |
| 684 | } |
| 685 | |
| 686 | if (haddr.hci_dev == HCI_DEV_NONE) { |
| 687 | err = -EINVAL; |
| 688 | goto done; |
| 689 | } |
| 690 | |
Marcel Holtmann | 10a8b86 | 2013-10-01 22:59:24 -0700 | [diff] [blame] | 691 | if (!capable(CAP_NET_ADMIN)) { |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 692 | err = -EPERM; |
| 693 | goto done; |
| 694 | } |
| 695 | |
| 696 | hdev = hci_dev_get(haddr.hci_dev); |
| 697 | if (!hdev) { |
| 698 | err = -ENODEV; |
| 699 | goto done; |
| 700 | } |
| 701 | |
| 702 | if (test_bit(HCI_UP, &hdev->flags) || |
| 703 | test_bit(HCI_INIT, &hdev->flags) || |
Marcel Holtmann | d603b76 | 2014-07-06 12:11:14 +0200 | [diff] [blame] | 704 | test_bit(HCI_SETUP, &hdev->dev_flags) || |
| 705 | test_bit(HCI_CONFIG, &hdev->dev_flags)) { |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 706 | err = -EBUSY; |
| 707 | hci_dev_put(hdev); |
| 708 | goto done; |
| 709 | } |
| 710 | |
| 711 | if (test_and_set_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
| 712 | err = -EUSERS; |
| 713 | hci_dev_put(hdev); |
| 714 | goto done; |
| 715 | } |
| 716 | |
Marcel Holtmann | 0602a8a | 2014-07-02 21:30:54 +0200 | [diff] [blame] | 717 | mgmt_index_removed(hdev); |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 718 | |
| 719 | err = hci_dev_open(hdev->id); |
| 720 | if (err) { |
| 721 | clear_bit(HCI_USER_CHANNEL, &hdev->dev_flags); |
Marcel Holtmann | 0602a8a | 2014-07-02 21:30:54 +0200 | [diff] [blame] | 722 | mgmt_index_added(hdev); |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 723 | hci_dev_put(hdev); |
| 724 | goto done; |
| 725 | } |
| 726 | |
| 727 | atomic_inc(&hdev->promisc); |
| 728 | |
| 729 | hci_pi(sk)->hdev = hdev; |
| 730 | break; |
| 731 | |
Marcel Holtmann | 7cc2ade | 2012-02-20 14:50:35 +0100 | [diff] [blame] | 732 | case HCI_CHANNEL_CONTROL: |
Marcel Holtmann | 4b95a24 | 2012-02-20 21:24:37 +0100 | [diff] [blame] | 733 | if (haddr.hci_dev != HCI_DEV_NONE) { |
Marcel Holtmann | 7cc2ade | 2012-02-20 14:50:35 +0100 | [diff] [blame] | 734 | err = -EINVAL; |
| 735 | goto done; |
| 736 | } |
| 737 | |
Marcel Holtmann | 801f13b | 2012-02-20 20:54:10 +0100 | [diff] [blame] | 738 | if (!capable(CAP_NET_ADMIN)) { |
| 739 | err = -EPERM; |
| 740 | goto done; |
| 741 | } |
| 742 | |
Marcel Holtmann | 7cc2ade | 2012-02-20 14:50:35 +0100 | [diff] [blame] | 743 | break; |
| 744 | |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 745 | case HCI_CHANNEL_MONITOR: |
| 746 | if (haddr.hci_dev != HCI_DEV_NONE) { |
| 747 | err = -EINVAL; |
| 748 | goto done; |
| 749 | } |
| 750 | |
| 751 | if (!capable(CAP_NET_RAW)) { |
| 752 | err = -EPERM; |
| 753 | goto done; |
| 754 | } |
| 755 | |
| 756 | send_monitor_replay(sk); |
| 757 | |
| 758 | atomic_inc(&monitor_promisc); |
| 759 | break; |
| 760 | |
Marcel Holtmann | 7cc2ade | 2012-02-20 14:50:35 +0100 | [diff] [blame] | 761 | default: |
| 762 | err = -EINVAL; |
| 763 | goto done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | } |
| 765 | |
Marcel Holtmann | 7cc2ade | 2012-02-20 14:50:35 +0100 | [diff] [blame] | 766 | |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 767 | hci_pi(sk)->channel = haddr.hci_channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | sk->sk_state = BT_BOUND; |
| 769 | |
| 770 | done: |
| 771 | release_sock(sk); |
| 772 | return err; |
| 773 | } |
| 774 | |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame] | 775 | static int hci_sock_getname(struct socket *sock, struct sockaddr *addr, |
| 776 | int *addr_len, int peer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 777 | { |
| 778 | struct sockaddr_hci *haddr = (struct sockaddr_hci *) addr; |
| 779 | struct sock *sk = sock->sk; |
Marcel Holtmann | 9d4b68b | 2013-08-26 00:20:37 -0700 | [diff] [blame] | 780 | struct hci_dev *hdev; |
| 781 | int err = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | |
| 783 | BT_DBG("sock %p sk %p", sock, sk); |
| 784 | |
Marcel Holtmann | 06f43cb | 2013-08-26 00:06:30 -0700 | [diff] [blame] | 785 | if (peer) |
| 786 | return -EOPNOTSUPP; |
| 787 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | lock_sock(sk); |
| 789 | |
Marcel Holtmann | 9d4b68b | 2013-08-26 00:20:37 -0700 | [diff] [blame] | 790 | hdev = hci_pi(sk)->hdev; |
| 791 | if (!hdev) { |
| 792 | err = -EBADFD; |
| 793 | goto done; |
| 794 | } |
| 795 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 796 | *addr_len = sizeof(*haddr); |
| 797 | haddr->hci_family = AF_BLUETOOTH; |
Marcel Holtmann | 7b005bd | 2006-02-13 11:40:03 +0100 | [diff] [blame] | 798 | haddr->hci_dev = hdev->id; |
Marcel Holtmann | 9d4b68b | 2013-08-26 00:20:37 -0700 | [diff] [blame] | 799 | haddr->hci_channel= hci_pi(sk)->channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | |
Marcel Holtmann | 9d4b68b | 2013-08-26 00:20:37 -0700 | [diff] [blame] | 801 | done: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | release_sock(sk); |
Marcel Holtmann | 9d4b68b | 2013-08-26 00:20:37 -0700 | [diff] [blame] | 803 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | } |
| 805 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 806 | static void hci_sock_cmsg(struct sock *sk, struct msghdr *msg, |
| 807 | struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 808 | { |
| 809 | __u32 mask = hci_pi(sk)->cmsg_mask; |
| 810 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 811 | if (mask & HCI_CMSG_DIR) { |
| 812 | int incoming = bt_cb(skb)->incoming; |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame] | 813 | put_cmsg(msg, SOL_HCI, HCI_CMSG_DIR, sizeof(incoming), |
| 814 | &incoming); |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 815 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | |
Patrick McHardy | a61bbcf | 2005-08-14 17:24:31 -0700 | [diff] [blame] | 817 | if (mask & HCI_CMSG_TSTAMP) { |
Johann Felix Soden | f6e623a | 2010-02-15 22:23:48 +0100 | [diff] [blame] | 818 | #ifdef CONFIG_COMPAT |
| 819 | struct compat_timeval ctv; |
| 820 | #endif |
Patrick McHardy | a61bbcf | 2005-08-14 17:24:31 -0700 | [diff] [blame] | 821 | struct timeval tv; |
Marcel Holtmann | 767c5eb | 2007-09-09 08:39:34 +0200 | [diff] [blame] | 822 | void *data; |
| 823 | int len; |
Patrick McHardy | a61bbcf | 2005-08-14 17:24:31 -0700 | [diff] [blame] | 824 | |
| 825 | skb_get_timestamp(skb, &tv); |
Marcel Holtmann | 767c5eb | 2007-09-09 08:39:34 +0200 | [diff] [blame] | 826 | |
David S. Miller | 1da97f8 | 2007-09-12 14:10:58 +0200 | [diff] [blame] | 827 | data = &tv; |
| 828 | len = sizeof(tv); |
| 829 | #ifdef CONFIG_COMPAT |
H. J. Lu | da88cea | 2012-02-10 14:12:15 -0800 | [diff] [blame] | 830 | if (!COMPAT_USE_64BIT_TIME && |
| 831 | (msg->msg_flags & MSG_CMSG_COMPAT)) { |
Marcel Holtmann | 767c5eb | 2007-09-09 08:39:34 +0200 | [diff] [blame] | 832 | ctv.tv_sec = tv.tv_sec; |
| 833 | ctv.tv_usec = tv.tv_usec; |
| 834 | data = &ctv; |
| 835 | len = sizeof(ctv); |
Marcel Holtmann | 767c5eb | 2007-09-09 08:39:34 +0200 | [diff] [blame] | 836 | } |
David S. Miller | 1da97f8 | 2007-09-12 14:10:58 +0200 | [diff] [blame] | 837 | #endif |
Marcel Holtmann | 767c5eb | 2007-09-09 08:39:34 +0200 | [diff] [blame] | 838 | |
| 839 | put_cmsg(msg, SOL_HCI, HCI_CMSG_TSTAMP, len, data); |
Patrick McHardy | a61bbcf | 2005-08-14 17:24:31 -0700 | [diff] [blame] | 840 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | } |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 842 | |
| 843 | static int hci_sock_recvmsg(struct kiocb *iocb, struct socket *sock, |
Gustavo Padovan | 3bb3c75 | 2012-05-17 00:36:22 -0300 | [diff] [blame] | 844 | struct msghdr *msg, size_t len, int flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | { |
| 846 | int noblock = flags & MSG_DONTWAIT; |
| 847 | struct sock *sk = sock->sk; |
| 848 | struct sk_buff *skb; |
| 849 | int copied, err; |
| 850 | |
| 851 | BT_DBG("sock %p, sk %p", sock, sk); |
| 852 | |
| 853 | if (flags & (MSG_OOB)) |
| 854 | return -EOPNOTSUPP; |
| 855 | |
| 856 | if (sk->sk_state == BT_CLOSED) |
| 857 | return 0; |
| 858 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 859 | skb = skb_recv_datagram(sk, flags, noblock, &err); |
| 860 | if (!skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 861 | return err; |
| 862 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | copied = skb->len; |
| 864 | if (len < copied) { |
| 865 | msg->msg_flags |= MSG_TRUNC; |
| 866 | copied = len; |
| 867 | } |
| 868 | |
Arnaldo Carvalho de Melo | badff6d | 2007-03-13 13:06:52 -0300 | [diff] [blame] | 869 | skb_reset_transport_header(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); |
| 871 | |
Marcel Holtmann | 3a20862 | 2012-02-20 14:50:34 +0100 | [diff] [blame] | 872 | switch (hci_pi(sk)->channel) { |
| 873 | case HCI_CHANNEL_RAW: |
| 874 | hci_sock_cmsg(sk, msg, skb); |
| 875 | break; |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 876 | case HCI_CHANNEL_USER: |
Marcel Holtmann | 97e0bde | 2012-02-22 13:49:28 +0100 | [diff] [blame] | 877 | case HCI_CHANNEL_CONTROL: |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 878 | case HCI_CHANNEL_MONITOR: |
| 879 | sock_recv_timestamp(msg, sk, skb); |
| 880 | break; |
Marcel Holtmann | 3a20862 | 2012-02-20 14:50:34 +0100 | [diff] [blame] | 881 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | |
| 883 | skb_free_datagram(sk, skb); |
| 884 | |
| 885 | return err ? : copied; |
| 886 | } |
| 887 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 888 | static int hci_sock_sendmsg(struct kiocb *iocb, struct socket *sock, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | struct msghdr *msg, size_t len) |
| 890 | { |
| 891 | struct sock *sk = sock->sk; |
| 892 | struct hci_dev *hdev; |
| 893 | struct sk_buff *skb; |
| 894 | int err; |
| 895 | |
| 896 | BT_DBG("sock %p sk %p", sock, sk); |
| 897 | |
| 898 | if (msg->msg_flags & MSG_OOB) |
| 899 | return -EOPNOTSUPP; |
| 900 | |
| 901 | if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_NOSIGNAL|MSG_ERRQUEUE)) |
| 902 | return -EINVAL; |
| 903 | |
| 904 | if (len < 4 || len > HCI_MAX_FRAME_SIZE) |
| 905 | return -EINVAL; |
| 906 | |
| 907 | lock_sock(sk); |
| 908 | |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 909 | switch (hci_pi(sk)->channel) { |
| 910 | case HCI_CHANNEL_RAW: |
Marcel Holtmann | 2350018 | 2013-08-26 21:40:52 -0700 | [diff] [blame] | 911 | case HCI_CHANNEL_USER: |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 912 | break; |
| 913 | case HCI_CHANNEL_CONTROL: |
| 914 | err = mgmt_control(sk, msg, len); |
| 915 | goto done; |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 916 | case HCI_CHANNEL_MONITOR: |
| 917 | err = -EOPNOTSUPP; |
| 918 | goto done; |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 919 | default: |
| 920 | err = -EINVAL; |
| 921 | goto done; |
| 922 | } |
| 923 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 924 | hdev = hci_pi(sk)->hdev; |
| 925 | if (!hdev) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | err = -EBADFD; |
| 927 | goto done; |
| 928 | } |
| 929 | |
Marcel Holtmann | 7e21add | 2009-11-18 01:05:00 +0100 | [diff] [blame] | 930 | if (!test_bit(HCI_UP, &hdev->flags)) { |
| 931 | err = -ENETDOWN; |
| 932 | goto done; |
| 933 | } |
| 934 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 935 | skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err); |
| 936 | if (!skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | goto done; |
| 938 | |
| 939 | if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) { |
| 940 | err = -EFAULT; |
| 941 | goto drop; |
| 942 | } |
| 943 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 944 | bt_cb(skb)->pkt_type = *((unsigned char *) skb->data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | skb_pull(skb, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 946 | |
Marcel Holtmann | 1bc5ad1 | 2013-12-17 03:21:25 -0800 | [diff] [blame] | 947 | if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { |
| 948 | /* No permission check is needed for user channel |
| 949 | * since that gets enforced when binding the socket. |
| 950 | * |
| 951 | * However check that the packet type is valid. |
| 952 | */ |
| 953 | if (bt_cb(skb)->pkt_type != HCI_COMMAND_PKT && |
| 954 | bt_cb(skb)->pkt_type != HCI_ACLDATA_PKT && |
| 955 | bt_cb(skb)->pkt_type != HCI_SCODATA_PKT) { |
| 956 | err = -EINVAL; |
| 957 | goto drop; |
| 958 | } |
| 959 | |
| 960 | skb_queue_tail(&hdev->raw_q, skb); |
| 961 | queue_work(hdev->workqueue, &hdev->tx_work); |
| 962 | } else if (bt_cb(skb)->pkt_type == HCI_COMMAND_PKT) { |
Harvey Harrison | 8398531 | 2008-05-02 16:25:46 -0700 | [diff] [blame] | 963 | u16 opcode = get_unaligned_le16(skb->data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | u16 ogf = hci_opcode_ogf(opcode); |
| 965 | u16 ocf = hci_opcode_ocf(opcode); |
| 966 | |
| 967 | if (((ogf > HCI_SFLT_MAX_OGF) || |
Gustavo Padovan | 3bb3c75 | 2012-05-17 00:36:22 -0300 | [diff] [blame] | 968 | !hci_test_bit(ocf & HCI_FLT_OCF_BITS, |
| 969 | &hci_sec_filter.ocf_mask[ogf])) && |
| 970 | !capable(CAP_NET_RAW)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 971 | err = -EPERM; |
| 972 | goto drop; |
| 973 | } |
| 974 | |
Marcel Holtmann | fee746b | 2014-06-29 12:13:05 +0200 | [diff] [blame] | 975 | if (ogf == 0x3f) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | skb_queue_tail(&hdev->raw_q, skb); |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 977 | queue_work(hdev->workqueue, &hdev->tx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | } else { |
Johan Hedberg | 11714b3 | 2013-03-05 20:37:47 +0200 | [diff] [blame] | 979 | /* Stand-alone HCI commands must be flaged as |
| 980 | * single-command requests. |
| 981 | */ |
| 982 | bt_cb(skb)->req.start = true; |
| 983 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 984 | skb_queue_tail(&hdev->cmd_q, skb); |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 985 | queue_work(hdev->workqueue, &hdev->cmd_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 986 | } |
| 987 | } else { |
| 988 | if (!capable(CAP_NET_RAW)) { |
| 989 | err = -EPERM; |
| 990 | goto drop; |
| 991 | } |
| 992 | |
| 993 | skb_queue_tail(&hdev->raw_q, skb); |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 994 | queue_work(hdev->workqueue, &hdev->tx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 995 | } |
| 996 | |
| 997 | err = len; |
| 998 | |
| 999 | done: |
| 1000 | release_sock(sk); |
| 1001 | return err; |
| 1002 | |
| 1003 | drop: |
| 1004 | kfree_skb(skb); |
| 1005 | goto done; |
| 1006 | } |
| 1007 | |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame] | 1008 | static int hci_sock_setsockopt(struct socket *sock, int level, int optname, |
| 1009 | char __user *optval, unsigned int len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1010 | { |
| 1011 | struct hci_ufilter uf = { .opcode = 0 }; |
| 1012 | struct sock *sk = sock->sk; |
| 1013 | int err = 0, opt = 0; |
| 1014 | |
| 1015 | BT_DBG("sk %p, opt %d", sk, optname); |
| 1016 | |
| 1017 | lock_sock(sk); |
| 1018 | |
Marcel Holtmann | 2f39cdb | 2012-02-20 14:50:32 +0100 | [diff] [blame] | 1019 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { |
Marcel Holtmann | c2371e8 | 2013-08-26 09:29:39 -0700 | [diff] [blame] | 1020 | err = -EBADFD; |
Marcel Holtmann | 2f39cdb | 2012-02-20 14:50:32 +0100 | [diff] [blame] | 1021 | goto done; |
| 1022 | } |
| 1023 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1024 | switch (optname) { |
| 1025 | case HCI_DATA_DIR: |
| 1026 | if (get_user(opt, (int __user *)optval)) { |
| 1027 | err = -EFAULT; |
| 1028 | break; |
| 1029 | } |
| 1030 | |
| 1031 | if (opt) |
| 1032 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_DIR; |
| 1033 | else |
| 1034 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_DIR; |
| 1035 | break; |
| 1036 | |
| 1037 | case HCI_TIME_STAMP: |
| 1038 | if (get_user(opt, (int __user *)optval)) { |
| 1039 | err = -EFAULT; |
| 1040 | break; |
| 1041 | } |
| 1042 | |
| 1043 | if (opt) |
| 1044 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_TSTAMP; |
| 1045 | else |
| 1046 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_TSTAMP; |
| 1047 | break; |
| 1048 | |
| 1049 | case HCI_FILTER: |
Marcel Holtmann | 0878b66 | 2007-05-05 00:35:59 +0200 | [diff] [blame] | 1050 | { |
| 1051 | struct hci_filter *f = &hci_pi(sk)->filter; |
| 1052 | |
| 1053 | uf.type_mask = f->type_mask; |
| 1054 | uf.opcode = f->opcode; |
| 1055 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); |
| 1056 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); |
| 1057 | } |
| 1058 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1059 | len = min_t(unsigned int, len, sizeof(uf)); |
| 1060 | if (copy_from_user(&uf, optval, len)) { |
| 1061 | err = -EFAULT; |
| 1062 | break; |
| 1063 | } |
| 1064 | |
| 1065 | if (!capable(CAP_NET_RAW)) { |
| 1066 | uf.type_mask &= hci_sec_filter.type_mask; |
| 1067 | uf.event_mask[0] &= *((u32 *) hci_sec_filter.event_mask + 0); |
| 1068 | uf.event_mask[1] &= *((u32 *) hci_sec_filter.event_mask + 1); |
| 1069 | } |
| 1070 | |
| 1071 | { |
| 1072 | struct hci_filter *f = &hci_pi(sk)->filter; |
| 1073 | |
| 1074 | f->type_mask = uf.type_mask; |
| 1075 | f->opcode = uf.opcode; |
| 1076 | *((u32 *) f->event_mask + 0) = uf.event_mask[0]; |
| 1077 | *((u32 *) f->event_mask + 1) = uf.event_mask[1]; |
| 1078 | } |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1079 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1080 | |
| 1081 | default: |
| 1082 | err = -ENOPROTOOPT; |
| 1083 | break; |
| 1084 | } |
| 1085 | |
Marcel Holtmann | 2f39cdb | 2012-02-20 14:50:32 +0100 | [diff] [blame] | 1086 | done: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1087 | release_sock(sk); |
| 1088 | return err; |
| 1089 | } |
| 1090 | |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame] | 1091 | static int hci_sock_getsockopt(struct socket *sock, int level, int optname, |
| 1092 | char __user *optval, int __user *optlen) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1093 | { |
| 1094 | struct hci_ufilter uf; |
| 1095 | struct sock *sk = sock->sk; |
Marcel Holtmann | cedc546 | 2012-02-20 14:50:33 +0100 | [diff] [blame] | 1096 | int len, opt, err = 0; |
| 1097 | |
| 1098 | BT_DBG("sk %p, opt %d", sk, optname); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1099 | |
| 1100 | if (get_user(len, optlen)) |
| 1101 | return -EFAULT; |
| 1102 | |
Marcel Holtmann | cedc546 | 2012-02-20 14:50:33 +0100 | [diff] [blame] | 1103 | lock_sock(sk); |
| 1104 | |
| 1105 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { |
Marcel Holtmann | c2371e8 | 2013-08-26 09:29:39 -0700 | [diff] [blame] | 1106 | err = -EBADFD; |
Marcel Holtmann | cedc546 | 2012-02-20 14:50:33 +0100 | [diff] [blame] | 1107 | goto done; |
| 1108 | } |
| 1109 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1110 | switch (optname) { |
| 1111 | case HCI_DATA_DIR: |
| 1112 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_DIR) |
| 1113 | opt = 1; |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1114 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1115 | opt = 0; |
| 1116 | |
| 1117 | if (put_user(opt, optval)) |
Marcel Holtmann | cedc546 | 2012-02-20 14:50:33 +0100 | [diff] [blame] | 1118 | err = -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1119 | break; |
| 1120 | |
| 1121 | case HCI_TIME_STAMP: |
| 1122 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_TSTAMP) |
| 1123 | opt = 1; |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1124 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1125 | opt = 0; |
| 1126 | |
| 1127 | if (put_user(opt, optval)) |
Marcel Holtmann | cedc546 | 2012-02-20 14:50:33 +0100 | [diff] [blame] | 1128 | err = -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1129 | break; |
| 1130 | |
| 1131 | case HCI_FILTER: |
| 1132 | { |
| 1133 | struct hci_filter *f = &hci_pi(sk)->filter; |
| 1134 | |
Mathias Krause | e15ca9a | 2012-08-15 11:31:46 +0000 | [diff] [blame] | 1135 | memset(&uf, 0, sizeof(uf)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1136 | uf.type_mask = f->type_mask; |
| 1137 | uf.opcode = f->opcode; |
| 1138 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); |
| 1139 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); |
| 1140 | } |
| 1141 | |
| 1142 | len = min_t(unsigned int, len, sizeof(uf)); |
| 1143 | if (copy_to_user(optval, &uf, len)) |
Marcel Holtmann | cedc546 | 2012-02-20 14:50:33 +0100 | [diff] [blame] | 1144 | err = -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1145 | break; |
| 1146 | |
| 1147 | default: |
Marcel Holtmann | cedc546 | 2012-02-20 14:50:33 +0100 | [diff] [blame] | 1148 | err = -ENOPROTOOPT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1149 | break; |
| 1150 | } |
| 1151 | |
Marcel Holtmann | cedc546 | 2012-02-20 14:50:33 +0100 | [diff] [blame] | 1152 | done: |
| 1153 | release_sock(sk); |
| 1154 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | } |
| 1156 | |
Eric Dumazet | 90ddc4f | 2005-12-22 12:49:22 -0800 | [diff] [blame] | 1157 | static const struct proto_ops hci_sock_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1158 | .family = PF_BLUETOOTH, |
| 1159 | .owner = THIS_MODULE, |
| 1160 | .release = hci_sock_release, |
| 1161 | .bind = hci_sock_bind, |
| 1162 | .getname = hci_sock_getname, |
| 1163 | .sendmsg = hci_sock_sendmsg, |
| 1164 | .recvmsg = hci_sock_recvmsg, |
| 1165 | .ioctl = hci_sock_ioctl, |
| 1166 | .poll = datagram_poll, |
| 1167 | .listen = sock_no_listen, |
| 1168 | .shutdown = sock_no_shutdown, |
| 1169 | .setsockopt = hci_sock_setsockopt, |
| 1170 | .getsockopt = hci_sock_getsockopt, |
| 1171 | .connect = sock_no_connect, |
| 1172 | .socketpair = sock_no_socketpair, |
| 1173 | .accept = sock_no_accept, |
| 1174 | .mmap = sock_no_mmap |
| 1175 | }; |
| 1176 | |
| 1177 | static struct proto hci_sk_proto = { |
| 1178 | .name = "HCI", |
| 1179 | .owner = THIS_MODULE, |
| 1180 | .obj_size = sizeof(struct hci_pinfo) |
| 1181 | }; |
| 1182 | |
Eric Paris | 3f378b6 | 2009-11-05 22:18:14 -0800 | [diff] [blame] | 1183 | static int hci_sock_create(struct net *net, struct socket *sock, int protocol, |
| 1184 | int kern) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1185 | { |
| 1186 | struct sock *sk; |
| 1187 | |
| 1188 | BT_DBG("sock %p", sock); |
| 1189 | |
| 1190 | if (sock->type != SOCK_RAW) |
| 1191 | return -ESOCKTNOSUPPORT; |
| 1192 | |
| 1193 | sock->ops = &hci_sock_ops; |
| 1194 | |
Pavel Emelyanov | 6257ff2 | 2007-11-01 00:39:31 -0700 | [diff] [blame] | 1195 | sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hci_sk_proto); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1196 | if (!sk) |
| 1197 | return -ENOMEM; |
| 1198 | |
| 1199 | sock_init_data(sock, sk); |
| 1200 | |
| 1201 | sock_reset_flag(sk, SOCK_ZAPPED); |
| 1202 | |
| 1203 | sk->sk_protocol = protocol; |
| 1204 | |
| 1205 | sock->state = SS_UNCONNECTED; |
| 1206 | sk->sk_state = BT_OPEN; |
| 1207 | |
| 1208 | bt_sock_link(&hci_sk_list, sk); |
| 1209 | return 0; |
| 1210 | } |
| 1211 | |
Stephen Hemminger | ec1b4cf | 2009-10-05 05:58:39 +0000 | [diff] [blame] | 1212 | static const struct net_proto_family hci_sock_family_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1213 | .family = PF_BLUETOOTH, |
| 1214 | .owner = THIS_MODULE, |
| 1215 | .create = hci_sock_create, |
| 1216 | }; |
| 1217 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1218 | int __init hci_sock_init(void) |
| 1219 | { |
| 1220 | int err; |
| 1221 | |
| 1222 | err = proto_register(&hci_sk_proto, 0); |
| 1223 | if (err < 0) |
| 1224 | return err; |
| 1225 | |
| 1226 | err = bt_sock_register(BTPROTO_HCI, &hci_sock_family_ops); |
Masatake YAMATO | f7c8663 | 2012-07-26 01:28:36 +0900 | [diff] [blame] | 1227 | if (err < 0) { |
| 1228 | BT_ERR("HCI socket registration failed"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1229 | goto error; |
Masatake YAMATO | f7c8663 | 2012-07-26 01:28:36 +0900 | [diff] [blame] | 1230 | } |
| 1231 | |
Al Viro | b031661 | 2013-04-04 19:14:33 -0400 | [diff] [blame] | 1232 | err = bt_procfs_init(&init_net, "hci", &hci_sk_list, NULL); |
Masatake YAMATO | f7c8663 | 2012-07-26 01:28:36 +0900 | [diff] [blame] | 1233 | if (err < 0) { |
| 1234 | BT_ERR("Failed to create HCI proc file"); |
| 1235 | bt_sock_unregister(BTPROTO_HCI); |
| 1236 | goto error; |
| 1237 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1238 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1239 | BT_INFO("HCI socket layer initialized"); |
| 1240 | |
| 1241 | return 0; |
| 1242 | |
| 1243 | error: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1244 | proto_unregister(&hci_sk_proto); |
| 1245 | return err; |
| 1246 | } |
| 1247 | |
Anand Gadiyar | b7440a14 | 2011-02-22 12:43:09 +0530 | [diff] [blame] | 1248 | void hci_sock_cleanup(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1249 | { |
Masatake YAMATO | f7c8663 | 2012-07-26 01:28:36 +0900 | [diff] [blame] | 1250 | bt_procfs_cleanup(&init_net, "hci"); |
David Herrmann | 5e9d7f8 | 2013-02-24 19:36:51 +0100 | [diff] [blame] | 1251 | bt_sock_unregister(BTPROTO_HCI); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1252 | proto_unregister(&hci_sk_proto); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1253 | } |