mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-15 03:26:47 +07:00
06f43cbc4d
The HCI sockets do not have a peer associated with it and so make sure that getpeername() returns EOPNOTSUPP since this operation is actually not supported on HCI sockets. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
1153 lines
23 KiB
C
1153 lines
23 KiB
C
/*
|
|
BlueZ - Bluetooth protocol stack for Linux
|
|
Copyright (C) 2000-2001 Qualcomm Incorporated
|
|
|
|
Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License version 2 as
|
|
published by the Free Software Foundation;
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
|
|
IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
|
|
CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
|
|
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
|
|
ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
|
|
COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
|
|
SOFTWARE IS DISCLAIMED.
|
|
*/
|
|
|
|
/* Bluetooth HCI sockets. */
|
|
|
|
#include <linux/export.h>
|
|
#include <asm/unaligned.h>
|
|
|
|
#include <net/bluetooth/bluetooth.h>
|
|
#include <net/bluetooth/hci_core.h>
|
|
#include <net/bluetooth/hci_mon.h>
|
|
|
|
static atomic_t monitor_promisc = ATOMIC_INIT(0);
|
|
|
|
/* ----- HCI socket interface ----- */
|
|
|
|
static inline int hci_test_bit(int nr, void *addr)
|
|
{
|
|
return *((__u32 *) addr + (nr >> 5)) & ((__u32) 1 << (nr & 31));
|
|
}
|
|
|
|
/* Security filter */
|
|
static struct hci_sec_filter hci_sec_filter = {
|
|
/* Packet types */
|
|
0x10,
|
|
/* Events */
|
|
{ 0x1000d9fe, 0x0000b00c },
|
|
/* Commands */
|
|
{
|
|
{ 0x0 },
|
|
/* OGF_LINK_CTL */
|
|
{ 0xbe000006, 0x00000001, 0x00000000, 0x00 },
|
|
/* OGF_LINK_POLICY */
|
|
{ 0x00005200, 0x00000000, 0x00000000, 0x00 },
|
|
/* OGF_HOST_CTL */
|
|
{ 0xaab00200, 0x2b402aaa, 0x05220154, 0x00 },
|
|
/* OGF_INFO_PARAM */
|
|
{ 0x000002be, 0x00000000, 0x00000000, 0x00 },
|
|
/* OGF_STATUS_PARAM */
|
|
{ 0x000000ea, 0x00000000, 0x00000000, 0x00 }
|
|
}
|
|
};
|
|
|
|
static struct bt_sock_list hci_sk_list = {
|
|
.lock = __RW_LOCK_UNLOCKED(hci_sk_list.lock)
|
|
};
|
|
|
|
static bool is_filtered_packet(struct sock *sk, struct sk_buff *skb)
|
|
{
|
|
struct hci_filter *flt;
|
|
int flt_type, flt_event;
|
|
|
|
/* Apply filter */
|
|
flt = &hci_pi(sk)->filter;
|
|
|
|
if (bt_cb(skb)->pkt_type == HCI_VENDOR_PKT)
|
|
flt_type = 0;
|
|
else
|
|
flt_type = bt_cb(skb)->pkt_type & HCI_FLT_TYPE_BITS;
|
|
|
|
if (!test_bit(flt_type, &flt->type_mask))
|
|
return true;
|
|
|
|
/* Extra filter for event packets only */
|
|
if (bt_cb(skb)->pkt_type != HCI_EVENT_PKT)
|
|
return false;
|
|
|
|
flt_event = (*(__u8 *)skb->data & HCI_FLT_EVENT_BITS);
|
|
|
|
if (!hci_test_bit(flt_event, &flt->event_mask))
|
|
return true;
|
|
|
|
/* Check filter only when opcode is set */
|
|
if (!flt->opcode)
|
|
return false;
|
|
|
|
if (flt_event == HCI_EV_CMD_COMPLETE &&
|
|
flt->opcode != get_unaligned((__le16 *)(skb->data + 3)))
|
|
return true;
|
|
|
|
if (flt_event == HCI_EV_CMD_STATUS &&
|
|
flt->opcode != get_unaligned((__le16 *)(skb->data + 4)))
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
/* Send frame to RAW socket */
|
|
void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb)
|
|
{
|
|
struct sock *sk;
|
|
struct sk_buff *skb_copy = NULL;
|
|
|
|
BT_DBG("hdev %p len %d", hdev, skb->len);
|
|
|
|
read_lock(&hci_sk_list.lock);
|
|
|
|
sk_for_each(sk, &hci_sk_list.head) {
|
|
struct sk_buff *nskb;
|
|
|
|
if (sk->sk_state != BT_BOUND || hci_pi(sk)->hdev != hdev)
|
|
continue;
|
|
|
|
/* Don't send frame to the socket it came from */
|
|
if (skb->sk == sk)
|
|
continue;
|
|
|
|
if (hci_pi(sk)->channel != HCI_CHANNEL_RAW)
|
|
continue;
|
|
|
|
if (is_filtered_packet(sk, skb))
|
|
continue;
|
|
|
|
if (!skb_copy) {
|
|
/* Create a private copy with headroom */
|
|
skb_copy = __pskb_copy(skb, 1, GFP_ATOMIC);
|
|
if (!skb_copy)
|
|
continue;
|
|
|
|
/* Put type byte before the data */
|
|
memcpy(skb_push(skb_copy, 1), &bt_cb(skb)->pkt_type, 1);
|
|
}
|
|
|
|
nskb = skb_clone(skb_copy, GFP_ATOMIC);
|
|
if (!nskb)
|
|
continue;
|
|
|
|
if (sock_queue_rcv_skb(sk, nskb))
|
|
kfree_skb(nskb);
|
|
}
|
|
|
|
read_unlock(&hci_sk_list.lock);
|
|
|
|
kfree_skb(skb_copy);
|
|
}
|
|
|
|
/* Send frame to control socket */
|
|
void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk)
|
|
{
|
|
struct sock *sk;
|
|
|
|
BT_DBG("len %d", skb->len);
|
|
|
|
read_lock(&hci_sk_list.lock);
|
|
|
|
sk_for_each(sk, &hci_sk_list.head) {
|
|
struct sk_buff *nskb;
|
|
|
|
/* Skip the original socket */
|
|
if (sk == skip_sk)
|
|
continue;
|
|
|
|
if (sk->sk_state != BT_BOUND)
|
|
continue;
|
|
|
|
if (hci_pi(sk)->channel != HCI_CHANNEL_CONTROL)
|
|
continue;
|
|
|
|
nskb = skb_clone(skb, GFP_ATOMIC);
|
|
if (!nskb)
|
|
continue;
|
|
|
|
if (sock_queue_rcv_skb(sk, nskb))
|
|
kfree_skb(nskb);
|
|
}
|
|
|
|
read_unlock(&hci_sk_list.lock);
|
|
}
|
|
|
|
/* Send frame to monitor socket */
|
|
void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb)
|
|
{
|
|
struct sock *sk;
|
|
struct sk_buff *skb_copy = NULL;
|
|
__le16 opcode;
|
|
|
|
if (!atomic_read(&monitor_promisc))
|
|
return;
|
|
|
|
BT_DBG("hdev %p len %d", hdev, skb->len);
|
|
|
|
switch (bt_cb(skb)->pkt_type) {
|
|
case HCI_COMMAND_PKT:
|
|
opcode = __constant_cpu_to_le16(HCI_MON_COMMAND_PKT);
|
|
break;
|
|
case HCI_EVENT_PKT:
|
|
opcode = __constant_cpu_to_le16(HCI_MON_EVENT_PKT);
|
|
break;
|
|
case HCI_ACLDATA_PKT:
|
|
if (bt_cb(skb)->incoming)
|
|
opcode = __constant_cpu_to_le16(HCI_MON_ACL_RX_PKT);
|
|
else
|
|
opcode = __constant_cpu_to_le16(HCI_MON_ACL_TX_PKT);
|
|
break;
|
|
case HCI_SCODATA_PKT:
|
|
if (bt_cb(skb)->incoming)
|
|
opcode = __constant_cpu_to_le16(HCI_MON_SCO_RX_PKT);
|
|
else
|
|
opcode = __constant_cpu_to_le16(HCI_MON_SCO_TX_PKT);
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
read_lock(&hci_sk_list.lock);
|
|
|
|
sk_for_each(sk, &hci_sk_list.head) {
|
|
struct sk_buff *nskb;
|
|
|
|
if (sk->sk_state != BT_BOUND)
|
|
continue;
|
|
|
|
if (hci_pi(sk)->channel != HCI_CHANNEL_MONITOR)
|
|
continue;
|
|
|
|
if (!skb_copy) {
|
|
struct hci_mon_hdr *hdr;
|
|
|
|
/* Create a private copy with headroom */
|
|
skb_copy = __pskb_copy(skb, HCI_MON_HDR_SIZE,
|
|
GFP_ATOMIC);
|
|
if (!skb_copy)
|
|
continue;
|
|
|
|
/* Put header before the data */
|
|
hdr = (void *) skb_push(skb_copy, HCI_MON_HDR_SIZE);
|
|
hdr->opcode = opcode;
|
|
hdr->index = cpu_to_le16(hdev->id);
|
|
hdr->len = cpu_to_le16(skb->len);
|
|
}
|
|
|
|
nskb = skb_clone(skb_copy, GFP_ATOMIC);
|
|
if (!nskb)
|
|
continue;
|
|
|
|
if (sock_queue_rcv_skb(sk, nskb))
|
|
kfree_skb(nskb);
|
|
}
|
|
|
|
read_unlock(&hci_sk_list.lock);
|
|
|
|
kfree_skb(skb_copy);
|
|
}
|
|
|
|
static void send_monitor_event(struct sk_buff *skb)
|
|
{
|
|
struct sock *sk;
|
|
|
|
BT_DBG("len %d", skb->len);
|
|
|
|
read_lock(&hci_sk_list.lock);
|
|
|
|
sk_for_each(sk, &hci_sk_list.head) {
|
|
struct sk_buff *nskb;
|
|
|
|
if (sk->sk_state != BT_BOUND)
|
|
continue;
|
|
|
|
if (hci_pi(sk)->channel != HCI_CHANNEL_MONITOR)
|
|
continue;
|
|
|
|
nskb = skb_clone(skb, GFP_ATOMIC);
|
|
if (!nskb)
|
|
continue;
|
|
|
|
if (sock_queue_rcv_skb(sk, nskb))
|
|
kfree_skb(nskb);
|
|
}
|
|
|
|
read_unlock(&hci_sk_list.lock);
|
|
}
|
|
|
|
static struct sk_buff *create_monitor_event(struct hci_dev *hdev, int event)
|
|
{
|
|
struct hci_mon_hdr *hdr;
|
|
struct hci_mon_new_index *ni;
|
|
struct sk_buff *skb;
|
|
__le16 opcode;
|
|
|
|
switch (event) {
|
|
case HCI_DEV_REG:
|
|
skb = bt_skb_alloc(HCI_MON_NEW_INDEX_SIZE, GFP_ATOMIC);
|
|
if (!skb)
|
|
return NULL;
|
|
|
|
ni = (void *) skb_put(skb, HCI_MON_NEW_INDEX_SIZE);
|
|
ni->type = hdev->dev_type;
|
|
ni->bus = hdev->bus;
|
|
bacpy(&ni->bdaddr, &hdev->bdaddr);
|
|
memcpy(ni->name, hdev->name, 8);
|
|
|
|
opcode = __constant_cpu_to_le16(HCI_MON_NEW_INDEX);
|
|
break;
|
|
|
|
case HCI_DEV_UNREG:
|
|
skb = bt_skb_alloc(0, GFP_ATOMIC);
|
|
if (!skb)
|
|
return NULL;
|
|
|
|
opcode = __constant_cpu_to_le16(HCI_MON_DEL_INDEX);
|
|
break;
|
|
|
|
default:
|
|
return NULL;
|
|
}
|
|
|
|
__net_timestamp(skb);
|
|
|
|
hdr = (void *) skb_push(skb, HCI_MON_HDR_SIZE);
|
|
hdr->opcode = opcode;
|
|
hdr->index = cpu_to_le16(hdev->id);
|
|
hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE);
|
|
|
|
return skb;
|
|
}
|
|
|
|
static void send_monitor_replay(struct sock *sk)
|
|
{
|
|
struct hci_dev *hdev;
|
|
|
|
read_lock(&hci_dev_list_lock);
|
|
|
|
list_for_each_entry(hdev, &hci_dev_list, list) {
|
|
struct sk_buff *skb;
|
|
|
|
skb = create_monitor_event(hdev, HCI_DEV_REG);
|
|
if (!skb)
|
|
continue;
|
|
|
|
if (sock_queue_rcv_skb(sk, skb))
|
|
kfree_skb(skb);
|
|
}
|
|
|
|
read_unlock(&hci_dev_list_lock);
|
|
}
|
|
|
|
/* Generate internal stack event */
|
|
static void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data)
|
|
{
|
|
struct hci_event_hdr *hdr;
|
|
struct hci_ev_stack_internal *ev;
|
|
struct sk_buff *skb;
|
|
|
|
skb = bt_skb_alloc(HCI_EVENT_HDR_SIZE + sizeof(*ev) + dlen, GFP_ATOMIC);
|
|
if (!skb)
|
|
return;
|
|
|
|
hdr = (void *) skb_put(skb, HCI_EVENT_HDR_SIZE);
|
|
hdr->evt = HCI_EV_STACK_INTERNAL;
|
|
hdr->plen = sizeof(*ev) + dlen;
|
|
|
|
ev = (void *) skb_put(skb, sizeof(*ev) + dlen);
|
|
ev->type = type;
|
|
memcpy(ev->data, data, dlen);
|
|
|
|
bt_cb(skb)->incoming = 1;
|
|
__net_timestamp(skb);
|
|
|
|
bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
|
|
skb->dev = (void *) hdev;
|
|
hci_send_to_sock(hdev, skb);
|
|
kfree_skb(skb);
|
|
}
|
|
|
|
void hci_sock_dev_event(struct hci_dev *hdev, int event)
|
|
{
|
|
struct hci_ev_si_device ev;
|
|
|
|
BT_DBG("hdev %s event %d", hdev->name, event);
|
|
|
|
/* Send event to monitor */
|
|
if (atomic_read(&monitor_promisc)) {
|
|
struct sk_buff *skb;
|
|
|
|
skb = create_monitor_event(hdev, event);
|
|
if (skb) {
|
|
send_monitor_event(skb);
|
|
kfree_skb(skb);
|
|
}
|
|
}
|
|
|
|
/* Send event to sockets */
|
|
ev.event = event;
|
|
ev.dev_id = hdev->id;
|
|
hci_si_event(NULL, HCI_EV_SI_DEVICE, sizeof(ev), &ev);
|
|
|
|
if (event == HCI_DEV_UNREG) {
|
|
struct sock *sk;
|
|
|
|
/* Detach sockets from device */
|
|
read_lock(&hci_sk_list.lock);
|
|
sk_for_each(sk, &hci_sk_list.head) {
|
|
bh_lock_sock_nested(sk);
|
|
if (hci_pi(sk)->hdev == hdev) {
|
|
hci_pi(sk)->hdev = NULL;
|
|
sk->sk_err = EPIPE;
|
|
sk->sk_state = BT_OPEN;
|
|
sk->sk_state_change(sk);
|
|
|
|
hci_dev_put(hdev);
|
|
}
|
|
bh_unlock_sock(sk);
|
|
}
|
|
read_unlock(&hci_sk_list.lock);
|
|
}
|
|
}
|
|
|
|
static int hci_sock_release(struct socket *sock)
|
|
{
|
|
struct sock *sk = sock->sk;
|
|
struct hci_dev *hdev;
|
|
|
|
BT_DBG("sock %p sk %p", sock, sk);
|
|
|
|
if (!sk)
|
|
return 0;
|
|
|
|
hdev = hci_pi(sk)->hdev;
|
|
|
|
if (hci_pi(sk)->channel == HCI_CHANNEL_MONITOR)
|
|
atomic_dec(&monitor_promisc);
|
|
|
|
bt_sock_unlink(&hci_sk_list, sk);
|
|
|
|
if (hdev) {
|
|
atomic_dec(&hdev->promisc);
|
|
hci_dev_put(hdev);
|
|
}
|
|
|
|
sock_orphan(sk);
|
|
|
|
skb_queue_purge(&sk->sk_receive_queue);
|
|
skb_queue_purge(&sk->sk_write_queue);
|
|
|
|
sock_put(sk);
|
|
return 0;
|
|
}
|
|
|
|
static int hci_sock_blacklist_add(struct hci_dev *hdev, void __user *arg)
|
|
{
|
|
bdaddr_t bdaddr;
|
|
int err;
|
|
|
|
if (copy_from_user(&bdaddr, arg, sizeof(bdaddr)))
|
|
return -EFAULT;
|
|
|
|
hci_dev_lock(hdev);
|
|
|
|
err = hci_blacklist_add(hdev, &bdaddr, 0);
|
|
|
|
hci_dev_unlock(hdev);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int hci_sock_blacklist_del(struct hci_dev *hdev, void __user *arg)
|
|
{
|
|
bdaddr_t bdaddr;
|
|
int err;
|
|
|
|
if (copy_from_user(&bdaddr, arg, sizeof(bdaddr)))
|
|
return -EFAULT;
|
|
|
|
hci_dev_lock(hdev);
|
|
|
|
err = hci_blacklist_del(hdev, &bdaddr, 0);
|
|
|
|
hci_dev_unlock(hdev);
|
|
|
|
return err;
|
|
}
|
|
|
|
/* Ioctls that require bound socket */
|
|
static int hci_sock_bound_ioctl(struct sock *sk, unsigned int cmd,
|
|
unsigned long arg)
|
|
{
|
|
struct hci_dev *hdev = hci_pi(sk)->hdev;
|
|
|
|
if (!hdev)
|
|
return -EBADFD;
|
|
|
|
switch (cmd) {
|
|
case HCISETRAW:
|
|
if (!capable(CAP_NET_ADMIN))
|
|
return -EPERM;
|
|
|
|
if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
|
|
return -EPERM;
|
|
|
|
if (arg)
|
|
set_bit(HCI_RAW, &hdev->flags);
|
|
else
|
|
clear_bit(HCI_RAW, &hdev->flags);
|
|
|
|
return 0;
|
|
|
|
case HCIGETCONNINFO:
|
|
return hci_get_conn_info(hdev, (void __user *) arg);
|
|
|
|
case HCIGETAUTHINFO:
|
|
return hci_get_auth_info(hdev, (void __user *) arg);
|
|
|
|
case HCIBLOCKADDR:
|
|
if (!capable(CAP_NET_ADMIN))
|
|
return -EPERM;
|
|
return hci_sock_blacklist_add(hdev, (void __user *) arg);
|
|
|
|
case HCIUNBLOCKADDR:
|
|
if (!capable(CAP_NET_ADMIN))
|
|
return -EPERM;
|
|
return hci_sock_blacklist_del(hdev, (void __user *) arg);
|
|
|
|
default:
|
|
if (hdev->ioctl)
|
|
return hdev->ioctl(hdev, cmd, arg);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
static int hci_sock_ioctl(struct socket *sock, unsigned int cmd,
|
|
unsigned long arg)
|
|
{
|
|
struct sock *sk = sock->sk;
|
|
void __user *argp = (void __user *) arg;
|
|
int err;
|
|
|
|
BT_DBG("cmd %x arg %lx", cmd, arg);
|
|
|
|
switch (cmd) {
|
|
case HCIGETDEVLIST:
|
|
return hci_get_dev_list(argp);
|
|
|
|
case HCIGETDEVINFO:
|
|
return hci_get_dev_info(argp);
|
|
|
|
case HCIGETCONNLIST:
|
|
return hci_get_conn_list(argp);
|
|
|
|
case HCIDEVUP:
|
|
if (!capable(CAP_NET_ADMIN))
|
|
return -EPERM;
|
|
return hci_dev_open(arg);
|
|
|
|
case HCIDEVDOWN:
|
|
if (!capable(CAP_NET_ADMIN))
|
|
return -EPERM;
|
|
return hci_dev_close(arg);
|
|
|
|
case HCIDEVRESET:
|
|
if (!capable(CAP_NET_ADMIN))
|
|
return -EPERM;
|
|
return hci_dev_reset(arg);
|
|
|
|
case HCIDEVRESTAT:
|
|
if (!capable(CAP_NET_ADMIN))
|
|
return -EPERM;
|
|
return hci_dev_reset_stat(arg);
|
|
|
|
case HCISETSCAN:
|
|
case HCISETAUTH:
|
|
case HCISETENCRYPT:
|
|
case HCISETPTYPE:
|
|
case HCISETLINKPOL:
|
|
case HCISETLINKMODE:
|
|
case HCISETACLMTU:
|
|
case HCISETSCOMTU:
|
|
if (!capable(CAP_NET_ADMIN))
|
|
return -EPERM;
|
|
return hci_dev_cmd(cmd, argp);
|
|
|
|
case HCIINQUIRY:
|
|
return hci_inquiry(argp);
|
|
|
|
default:
|
|
lock_sock(sk);
|
|
err = hci_sock_bound_ioctl(sk, cmd, arg);
|
|
release_sock(sk);
|
|
return err;
|
|
}
|
|
}
|
|
|
|
static int hci_sock_bind(struct socket *sock, struct sockaddr *addr,
|
|
int addr_len)
|
|
{
|
|
struct sockaddr_hci haddr;
|
|
struct sock *sk = sock->sk;
|
|
struct hci_dev *hdev = NULL;
|
|
int len, err = 0;
|
|
|
|
BT_DBG("sock %p sk %p", sock, sk);
|
|
|
|
if (!addr)
|
|
return -EINVAL;
|
|
|
|
memset(&haddr, 0, sizeof(haddr));
|
|
len = min_t(unsigned int, sizeof(haddr), addr_len);
|
|
memcpy(&haddr, addr, len);
|
|
|
|
if (haddr.hci_family != AF_BLUETOOTH)
|
|
return -EINVAL;
|
|
|
|
lock_sock(sk);
|
|
|
|
if (sk->sk_state == BT_BOUND) {
|
|
err = -EALREADY;
|
|
goto done;
|
|
}
|
|
|
|
switch (haddr.hci_channel) {
|
|
case HCI_CHANNEL_RAW:
|
|
if (hci_pi(sk)->hdev) {
|
|
err = -EALREADY;
|
|
goto done;
|
|
}
|
|
|
|
if (haddr.hci_dev != HCI_DEV_NONE) {
|
|
hdev = hci_dev_get(haddr.hci_dev);
|
|
if (!hdev) {
|
|
err = -ENODEV;
|
|
goto done;
|
|
}
|
|
|
|
atomic_inc(&hdev->promisc);
|
|
}
|
|
|
|
hci_pi(sk)->hdev = hdev;
|
|
break;
|
|
|
|
case HCI_CHANNEL_CONTROL:
|
|
if (haddr.hci_dev != HCI_DEV_NONE) {
|
|
err = -EINVAL;
|
|
goto done;
|
|
}
|
|
|
|
if (!capable(CAP_NET_ADMIN)) {
|
|
err = -EPERM;
|
|
goto done;
|
|
}
|
|
|
|
break;
|
|
|
|
case HCI_CHANNEL_MONITOR:
|
|
if (haddr.hci_dev != HCI_DEV_NONE) {
|
|
err = -EINVAL;
|
|
goto done;
|
|
}
|
|
|
|
if (!capable(CAP_NET_RAW)) {
|
|
err = -EPERM;
|
|
goto done;
|
|
}
|
|
|
|
send_monitor_replay(sk);
|
|
|
|
atomic_inc(&monitor_promisc);
|
|
break;
|
|
|
|
default:
|
|
err = -EINVAL;
|
|
goto done;
|
|
}
|
|
|
|
|
|
hci_pi(sk)->channel = haddr.hci_channel;
|
|
sk->sk_state = BT_BOUND;
|
|
|
|
done:
|
|
release_sock(sk);
|
|
return err;
|
|
}
|
|
|
|
static int hci_sock_getname(struct socket *sock, struct sockaddr *addr,
|
|
int *addr_len, int peer)
|
|
{
|
|
struct sockaddr_hci *haddr = (struct sockaddr_hci *) addr;
|
|
struct sock *sk = sock->sk;
|
|
struct hci_dev *hdev = hci_pi(sk)->hdev;
|
|
|
|
BT_DBG("sock %p sk %p", sock, sk);
|
|
|
|
if (peer)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (!hdev)
|
|
return -EBADFD;
|
|
|
|
lock_sock(sk);
|
|
|
|
*addr_len = sizeof(*haddr);
|
|
haddr->hci_family = AF_BLUETOOTH;
|
|
haddr->hci_dev = hdev->id;
|
|
haddr->hci_channel= 0;
|
|
|
|
release_sock(sk);
|
|
return 0;
|
|
}
|
|
|
|
static void hci_sock_cmsg(struct sock *sk, struct msghdr *msg,
|
|
struct sk_buff *skb)
|
|
{
|
|
__u32 mask = hci_pi(sk)->cmsg_mask;
|
|
|
|
if (mask & HCI_CMSG_DIR) {
|
|
int incoming = bt_cb(skb)->incoming;
|
|
put_cmsg(msg, SOL_HCI, HCI_CMSG_DIR, sizeof(incoming),
|
|
&incoming);
|
|
}
|
|
|
|
if (mask & HCI_CMSG_TSTAMP) {
|
|
#ifdef CONFIG_COMPAT
|
|
struct compat_timeval ctv;
|
|
#endif
|
|
struct timeval tv;
|
|
void *data;
|
|
int len;
|
|
|
|
skb_get_timestamp(skb, &tv);
|
|
|
|
data = &tv;
|
|
len = sizeof(tv);
|
|
#ifdef CONFIG_COMPAT
|
|
if (!COMPAT_USE_64BIT_TIME &&
|
|
(msg->msg_flags & MSG_CMSG_COMPAT)) {
|
|
ctv.tv_sec = tv.tv_sec;
|
|
ctv.tv_usec = tv.tv_usec;
|
|
data = &ctv;
|
|
len = sizeof(ctv);
|
|
}
|
|
#endif
|
|
|
|
put_cmsg(msg, SOL_HCI, HCI_CMSG_TSTAMP, len, data);
|
|
}
|
|
}
|
|
|
|
static int hci_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
|
|
struct msghdr *msg, size_t len, int flags)
|
|
{
|
|
int noblock = flags & MSG_DONTWAIT;
|
|
struct sock *sk = sock->sk;
|
|
struct sk_buff *skb;
|
|
int copied, err;
|
|
|
|
BT_DBG("sock %p, sk %p", sock, sk);
|
|
|
|
if (flags & (MSG_OOB))
|
|
return -EOPNOTSUPP;
|
|
|
|
if (sk->sk_state == BT_CLOSED)
|
|
return 0;
|
|
|
|
skb = skb_recv_datagram(sk, flags, noblock, &err);
|
|
if (!skb)
|
|
return err;
|
|
|
|
msg->msg_namelen = 0;
|
|
|
|
copied = skb->len;
|
|
if (len < copied) {
|
|
msg->msg_flags |= MSG_TRUNC;
|
|
copied = len;
|
|
}
|
|
|
|
skb_reset_transport_header(skb);
|
|
err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
|
|
|
|
switch (hci_pi(sk)->channel) {
|
|
case HCI_CHANNEL_RAW:
|
|
hci_sock_cmsg(sk, msg, skb);
|
|
break;
|
|
case HCI_CHANNEL_CONTROL:
|
|
case HCI_CHANNEL_MONITOR:
|
|
sock_recv_timestamp(msg, sk, skb);
|
|
break;
|
|
}
|
|
|
|
skb_free_datagram(sk, skb);
|
|
|
|
return err ? : copied;
|
|
}
|
|
|
|
static int hci_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
|
|
struct msghdr *msg, size_t len)
|
|
{
|
|
struct sock *sk = sock->sk;
|
|
struct hci_dev *hdev;
|
|
struct sk_buff *skb;
|
|
int err;
|
|
|
|
BT_DBG("sock %p sk %p", sock, sk);
|
|
|
|
if (msg->msg_flags & MSG_OOB)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_NOSIGNAL|MSG_ERRQUEUE))
|
|
return -EINVAL;
|
|
|
|
if (len < 4 || len > HCI_MAX_FRAME_SIZE)
|
|
return -EINVAL;
|
|
|
|
lock_sock(sk);
|
|
|
|
switch (hci_pi(sk)->channel) {
|
|
case HCI_CHANNEL_RAW:
|
|
break;
|
|
case HCI_CHANNEL_CONTROL:
|
|
err = mgmt_control(sk, msg, len);
|
|
goto done;
|
|
case HCI_CHANNEL_MONITOR:
|
|
err = -EOPNOTSUPP;
|
|
goto done;
|
|
default:
|
|
err = -EINVAL;
|
|
goto done;
|
|
}
|
|
|
|
hdev = hci_pi(sk)->hdev;
|
|
if (!hdev) {
|
|
err = -EBADFD;
|
|
goto done;
|
|
}
|
|
|
|
if (!test_bit(HCI_UP, &hdev->flags)) {
|
|
err = -ENETDOWN;
|
|
goto done;
|
|
}
|
|
|
|
skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err);
|
|
if (!skb)
|
|
goto done;
|
|
|
|
if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) {
|
|
err = -EFAULT;
|
|
goto drop;
|
|
}
|
|
|
|
bt_cb(skb)->pkt_type = *((unsigned char *) skb->data);
|
|
skb_pull(skb, 1);
|
|
skb->dev = (void *) hdev;
|
|
|
|
if (bt_cb(skb)->pkt_type == HCI_COMMAND_PKT) {
|
|
u16 opcode = get_unaligned_le16(skb->data);
|
|
u16 ogf = hci_opcode_ogf(opcode);
|
|
u16 ocf = hci_opcode_ocf(opcode);
|
|
|
|
if (((ogf > HCI_SFLT_MAX_OGF) ||
|
|
!hci_test_bit(ocf & HCI_FLT_OCF_BITS,
|
|
&hci_sec_filter.ocf_mask[ogf])) &&
|
|
!capable(CAP_NET_RAW)) {
|
|
err = -EPERM;
|
|
goto drop;
|
|
}
|
|
|
|
if (test_bit(HCI_RAW, &hdev->flags) || (ogf == 0x3f)) {
|
|
skb_queue_tail(&hdev->raw_q, skb);
|
|
queue_work(hdev->workqueue, &hdev->tx_work);
|
|
} else {
|
|
/* Stand-alone HCI commands must be flaged as
|
|
* single-command requests.
|
|
*/
|
|
bt_cb(skb)->req.start = true;
|
|
|
|
skb_queue_tail(&hdev->cmd_q, skb);
|
|
queue_work(hdev->workqueue, &hdev->cmd_work);
|
|
}
|
|
} else {
|
|
if (!capable(CAP_NET_RAW)) {
|
|
err = -EPERM;
|
|
goto drop;
|
|
}
|
|
|
|
skb_queue_tail(&hdev->raw_q, skb);
|
|
queue_work(hdev->workqueue, &hdev->tx_work);
|
|
}
|
|
|
|
err = len;
|
|
|
|
done:
|
|
release_sock(sk);
|
|
return err;
|
|
|
|
drop:
|
|
kfree_skb(skb);
|
|
goto done;
|
|
}
|
|
|
|
static int hci_sock_setsockopt(struct socket *sock, int level, int optname,
|
|
char __user *optval, unsigned int len)
|
|
{
|
|
struct hci_ufilter uf = { .opcode = 0 };
|
|
struct sock *sk = sock->sk;
|
|
int err = 0, opt = 0;
|
|
|
|
BT_DBG("sk %p, opt %d", sk, optname);
|
|
|
|
lock_sock(sk);
|
|
|
|
if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) {
|
|
err = -EINVAL;
|
|
goto done;
|
|
}
|
|
|
|
switch (optname) {
|
|
case HCI_DATA_DIR:
|
|
if (get_user(opt, (int __user *)optval)) {
|
|
err = -EFAULT;
|
|
break;
|
|
}
|
|
|
|
if (opt)
|
|
hci_pi(sk)->cmsg_mask |= HCI_CMSG_DIR;
|
|
else
|
|
hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_DIR;
|
|
break;
|
|
|
|
case HCI_TIME_STAMP:
|
|
if (get_user(opt, (int __user *)optval)) {
|
|
err = -EFAULT;
|
|
break;
|
|
}
|
|
|
|
if (opt)
|
|
hci_pi(sk)->cmsg_mask |= HCI_CMSG_TSTAMP;
|
|
else
|
|
hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_TSTAMP;
|
|
break;
|
|
|
|
case HCI_FILTER:
|
|
{
|
|
struct hci_filter *f = &hci_pi(sk)->filter;
|
|
|
|
uf.type_mask = f->type_mask;
|
|
uf.opcode = f->opcode;
|
|
uf.event_mask[0] = *((u32 *) f->event_mask + 0);
|
|
uf.event_mask[1] = *((u32 *) f->event_mask + 1);
|
|
}
|
|
|
|
len = min_t(unsigned int, len, sizeof(uf));
|
|
if (copy_from_user(&uf, optval, len)) {
|
|
err = -EFAULT;
|
|
break;
|
|
}
|
|
|
|
if (!capable(CAP_NET_RAW)) {
|
|
uf.type_mask &= hci_sec_filter.type_mask;
|
|
uf.event_mask[0] &= *((u32 *) hci_sec_filter.event_mask + 0);
|
|
uf.event_mask[1] &= *((u32 *) hci_sec_filter.event_mask + 1);
|
|
}
|
|
|
|
{
|
|
struct hci_filter *f = &hci_pi(sk)->filter;
|
|
|
|
f->type_mask = uf.type_mask;
|
|
f->opcode = uf.opcode;
|
|
*((u32 *) f->event_mask + 0) = uf.event_mask[0];
|
|
*((u32 *) f->event_mask + 1) = uf.event_mask[1];
|
|
}
|
|
break;
|
|
|
|
default:
|
|
err = -ENOPROTOOPT;
|
|
break;
|
|
}
|
|
|
|
done:
|
|
release_sock(sk);
|
|
return err;
|
|
}
|
|
|
|
static int hci_sock_getsockopt(struct socket *sock, int level, int optname,
|
|
char __user *optval, int __user *optlen)
|
|
{
|
|
struct hci_ufilter uf;
|
|
struct sock *sk = sock->sk;
|
|
int len, opt, err = 0;
|
|
|
|
BT_DBG("sk %p, opt %d", sk, optname);
|
|
|
|
if (get_user(len, optlen))
|
|
return -EFAULT;
|
|
|
|
lock_sock(sk);
|
|
|
|
if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) {
|
|
err = -EINVAL;
|
|
goto done;
|
|
}
|
|
|
|
switch (optname) {
|
|
case HCI_DATA_DIR:
|
|
if (hci_pi(sk)->cmsg_mask & HCI_CMSG_DIR)
|
|
opt = 1;
|
|
else
|
|
opt = 0;
|
|
|
|
if (put_user(opt, optval))
|
|
err = -EFAULT;
|
|
break;
|
|
|
|
case HCI_TIME_STAMP:
|
|
if (hci_pi(sk)->cmsg_mask & HCI_CMSG_TSTAMP)
|
|
opt = 1;
|
|
else
|
|
opt = 0;
|
|
|
|
if (put_user(opt, optval))
|
|
err = -EFAULT;
|
|
break;
|
|
|
|
case HCI_FILTER:
|
|
{
|
|
struct hci_filter *f = &hci_pi(sk)->filter;
|
|
|
|
memset(&uf, 0, sizeof(uf));
|
|
uf.type_mask = f->type_mask;
|
|
uf.opcode = f->opcode;
|
|
uf.event_mask[0] = *((u32 *) f->event_mask + 0);
|
|
uf.event_mask[1] = *((u32 *) f->event_mask + 1);
|
|
}
|
|
|
|
len = min_t(unsigned int, len, sizeof(uf));
|
|
if (copy_to_user(optval, &uf, len))
|
|
err = -EFAULT;
|
|
break;
|
|
|
|
default:
|
|
err = -ENOPROTOOPT;
|
|
break;
|
|
}
|
|
|
|
done:
|
|
release_sock(sk);
|
|
return err;
|
|
}
|
|
|
|
static const struct proto_ops hci_sock_ops = {
|
|
.family = PF_BLUETOOTH,
|
|
.owner = THIS_MODULE,
|
|
.release = hci_sock_release,
|
|
.bind = hci_sock_bind,
|
|
.getname = hci_sock_getname,
|
|
.sendmsg = hci_sock_sendmsg,
|
|
.recvmsg = hci_sock_recvmsg,
|
|
.ioctl = hci_sock_ioctl,
|
|
.poll = datagram_poll,
|
|
.listen = sock_no_listen,
|
|
.shutdown = sock_no_shutdown,
|
|
.setsockopt = hci_sock_setsockopt,
|
|
.getsockopt = hci_sock_getsockopt,
|
|
.connect = sock_no_connect,
|
|
.socketpair = sock_no_socketpair,
|
|
.accept = sock_no_accept,
|
|
.mmap = sock_no_mmap
|
|
};
|
|
|
|
static struct proto hci_sk_proto = {
|
|
.name = "HCI",
|
|
.owner = THIS_MODULE,
|
|
.obj_size = sizeof(struct hci_pinfo)
|
|
};
|
|
|
|
static int hci_sock_create(struct net *net, struct socket *sock, int protocol,
|
|
int kern)
|
|
{
|
|
struct sock *sk;
|
|
|
|
BT_DBG("sock %p", sock);
|
|
|
|
if (sock->type != SOCK_RAW)
|
|
return -ESOCKTNOSUPPORT;
|
|
|
|
sock->ops = &hci_sock_ops;
|
|
|
|
sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hci_sk_proto);
|
|
if (!sk)
|
|
return -ENOMEM;
|
|
|
|
sock_init_data(sock, sk);
|
|
|
|
sock_reset_flag(sk, SOCK_ZAPPED);
|
|
|
|
sk->sk_protocol = protocol;
|
|
|
|
sock->state = SS_UNCONNECTED;
|
|
sk->sk_state = BT_OPEN;
|
|
|
|
bt_sock_link(&hci_sk_list, sk);
|
|
return 0;
|
|
}
|
|
|
|
static const struct net_proto_family hci_sock_family_ops = {
|
|
.family = PF_BLUETOOTH,
|
|
.owner = THIS_MODULE,
|
|
.create = hci_sock_create,
|
|
};
|
|
|
|
int __init hci_sock_init(void)
|
|
{
|
|
int err;
|
|
|
|
err = proto_register(&hci_sk_proto, 0);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = bt_sock_register(BTPROTO_HCI, &hci_sock_family_ops);
|
|
if (err < 0) {
|
|
BT_ERR("HCI socket registration failed");
|
|
goto error;
|
|
}
|
|
|
|
err = bt_procfs_init(&init_net, "hci", &hci_sk_list, NULL);
|
|
if (err < 0) {
|
|
BT_ERR("Failed to create HCI proc file");
|
|
bt_sock_unregister(BTPROTO_HCI);
|
|
goto error;
|
|
}
|
|
|
|
BT_INFO("HCI socket layer initialized");
|
|
|
|
return 0;
|
|
|
|
error:
|
|
proto_unregister(&hci_sk_proto);
|
|
return err;
|
|
}
|
|
|
|
void hci_sock_cleanup(void)
|
|
{
|
|
bt_procfs_cleanup(&init_net, "hci");
|
|
bt_sock_unregister(BTPROTO_HCI);
|
|
proto_unregister(&hci_sk_proto);
|
|
}
|