diff options
Diffstat (limited to 'net/bluetooth_tizen/hci_sock.c')
| -rw-r--r-- | net/bluetooth_tizen/hci_sock.c | 1102 |
1 files changed, 0 insertions, 1102 deletions
diff --git a/net/bluetooth_tizen/hci_sock.c b/net/bluetooth_tizen/hci_sock.c deleted file mode 100644 index 63c1516..0000000 --- a/net/bluetooth_tizen/hci_sock.c +++ /dev/null @@ -1,1102 +0,0 @@ -/* - 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/module.h> - -#include <linux/types.h> -#include <linux/capability.h> -#include <linux/errno.h> -#include <linux/kernel.h> -#include <linux/slab.h> -#include <linux/poll.h> -#include <linux/fcntl.h> -#include <linux/init.h> -#include <linux/skbuff.h> -#include <linux/workqueue.h> -#include <linux/interrupt.h> -#include <linux/compat.h> -#include <linux/socket.h> -#include <linux/ioctl.h> -#include <net/sock.h> - -#include <asm/system.h> -#include <linux/uaccess.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) -}; - -/* Send frame to RAW socket */ -void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb) -{ - struct sock *sk; - struct hlist_node *node; - 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, node, &hci_sk_list.head) { - struct hci_filter *flt; - 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; - - /* Apply filter */ - flt = &hci_pi(sk)->filter; - - if (!test_bit((bt_cb(skb)->pkt_type == HCI_VENDOR_PKT) ? - 0 : (bt_cb(skb)->pkt_type & HCI_FLT_TYPE_BITS), &flt->type_mask)) - continue; - - if (bt_cb(skb)->pkt_type == HCI_EVENT_PKT) { - register int evt = (*(__u8 *)skb->data & HCI_FLT_EVENT_BITS); - - if (!hci_test_bit(evt, &flt->event_mask)) - continue; - - if (flt->opcode && - ((evt == HCI_EV_CMD_COMPLETE && - flt->opcode != - get_unaligned((__le16 *)(skb->data + 3))) || - (evt == HCI_EV_CMD_STATUS && - flt->opcode != - get_unaligned((__le16 *)(skb->data + 4))))) - 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; - struct hlist_node *node; - - BT_DBG("len %d", skb->len); - - read_lock(&hci_sk_list.lock); - - sk_for_each(sk, node, &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 hlist_node *node; - 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, node, &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; - struct hlist_node *node; - - BT_DBG("len %d", skb->len); - - read_lock(&hci_sk_list.lock); - - sk_for_each(sk, node, &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); -} - -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 inline 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 -EACCES; - - 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 -EACCES; - return hci_sock_blacklist_add(hdev, (void __user *) arg); - - case HCIUNBLOCKADDR: - if (!capable(CAP_NET_ADMIN)) - return -EACCES; - 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 -EACCES; - return hci_dev_open(arg); - - case HCIDEVDOWN: - if (!capable(CAP_NET_ADMIN)) - return -EACCES; - return hci_dev_close(arg); - - case HCIDEVRESET: - if (!capable(CAP_NET_ADMIN)) - return -EACCES; - return hci_dev_reset(arg); - - case HCIDEVRESTAT: - if (!capable(CAP_NET_ADMIN)) - return -EACCES; - 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 -EACCES; - 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 (!hdev) - return -EBADFD; - - lock_sock(sk); - - *addr_len = sizeof(*haddr); - haddr->hci_family = AF_BLUETOOTH; - haddr->hci_dev = hdev->id; - - release_sock(sk); - return 0; -} - -static inline 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 (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 { - 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; - - 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 int hci_sock_dev_event(struct notifier_block *this, - unsigned long event, void *ptr) -{ - struct hci_dev *hdev = (struct hci_dev *) ptr; - struct hci_ev_si_device ev; - - BT_DBG("hdev %s event %ld", hdev->name, event); - - /* 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; - struct hlist_node *node; - - /* Detach sockets from device */ - read_lock(&hci_sk_list.lock); - sk_for_each(sk, node, &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); - } - - return NOTIFY_DONE; -} - -static const struct net_proto_family hci_sock_family_ops = { - .family = PF_BLUETOOTH, - .owner = THIS_MODULE, - .create = hci_sock_create, -}; - -static struct notifier_block hci_sock_nblock = { - .notifier_call = hci_sock_dev_event -}; - -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) - goto error; - - hci_register_notifier(&hci_sock_nblock); - - BT_INFO("HCI socket layer initialized"); - - return 0; - -error: - BT_ERR("HCI socket registration failed"); - proto_unregister(&hci_sk_proto); - return err; -} - -void hci_sock_cleanup(void) -{ - if (bt_sock_unregister(BTPROTO_HCI) < 0) - BT_ERR("HCI socket unregistration failed"); - - hci_unregister_notifier(&hci_sock_nblock); - - proto_unregister(&hci_sk_proto); -} |