Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
new file mode 100644
index 0000000..c9792ba
--- /dev/null
+++ b/net/bluetooth/hci_sock.c
@@ -0,0 +1,707 @@
+/*
+ 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/config.h>
+#include <linux/module.h>
+
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/sched.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/socket.h>
+#include <linux/ioctl.h>
+#include <net/sock.h>
+
+#include <asm/system.h>
+#include <asm/uaccess.h>
+#include <asm/unaligned.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#ifndef CONFIG_BT_HCI_SOCK_DEBUG
+#undef BT_DBG
+#define BT_DBG(D...)
+#endif
+
+/* ----- 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, 0x0000300c },
+ /* Commands */
+ {
+ { 0x0 },
+ /* OGF_LINK_CTL */
+ { 0xbe000006, 0x00000001, 0x0000, 0x00 },
+ /* OGF_LINK_POLICY */
+ { 0x00005200, 0x00000000, 0x0000, 0x00 },
+ /* OGF_HOST_CTL */
+ { 0xaab00200, 0x2b402aaa, 0x0154, 0x00 },
+ /* OGF_INFO_PARAM */
+ { 0x000002be, 0x00000000, 0x0000, 0x00 },
+ /* OGF_STATUS_PARAM */
+ { 0x000000ea, 0x00000000, 0x0000, 0x00 }
+ }
+};
+
+static struct bt_sock_list hci_sk_list = {
+ .lock = RW_LOCK_UNLOCKED
+};
+
+/* 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;
+
+ 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;
+
+ /* Apply filter */
+ flt = &hci_pi(sk)->filter;
+
+ if (!test_bit((skb->pkt_type == HCI_VENDOR_PKT) ?
+ 0 : (skb->pkt_type & HCI_FLT_TYPE_BITS), &flt->type_mask))
+ continue;
+
+ if (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 != *(__u16 *)(skb->data + 3)) ||
+ (evt == HCI_EV_CMD_STATUS &&
+ flt->opcode != *(__u16 *)(skb->data + 4))))
+ continue;
+ }
+
+ if (!(nskb = skb_clone(skb, GFP_ATOMIC)))
+ continue;
+
+ /* Put type byte before the data */
+ memcpy(skb_push(nskb, 1), &nskb->pkt_type, 1);
+
+ if (sock_queue_rcv_skb(sk, nskb))
+ kfree_skb(nskb);
+ }
+ read_unlock(&hci_sk_list.lock);
+}
+
+static int hci_sock_release(struct socket *sock)
+{
+ struct sock *sk = sock->sk;
+ struct hci_dev *hdev = hci_pi(sk)->hdev;
+
+ BT_DBG("sock %p sk %p", sock, sk);
+
+ if (!sk)
+ return 0;
+
+ 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;
+}
+
+/* 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 HCISETSECMGR:
+ if (!capable(CAP_NET_ADMIN))
+ return -EACCES;
+
+ if (arg)
+ set_bit(HCI_SECMGR, &hdev->flags);
+ else
+ clear_bit(HCI_SECMGR, &hdev->flags);
+
+ return 0;
+
+ case HCIGETCONNINFO:
+ return hci_get_conn_info(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 sockaddr_hci *) addr;
+ struct sock *sk = sock->sk;
+ struct hci_dev *hdev = NULL;
+ int err = 0;
+
+ BT_DBG("sock %p sk %p", sock, sk);
+
+ if (!haddr || haddr->hci_family != AF_BLUETOOTH)
+ return -EINVAL;
+
+ lock_sock(sk);
+
+ if (hci_pi(sk)->hdev) {
+ err = -EALREADY;
+ goto done;
+ }
+
+ if (haddr->hci_dev != HCI_DEV_NONE) {
+ if (!(hdev = hci_dev_get(haddr->hci_dev))) {
+ err = -ENODEV;
+ goto done;
+ }
+
+ atomic_inc(&hdev->promisc);
+ }
+
+ hci_pi(sk)->hdev = hdev;
+ 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;
+
+ BT_DBG("sock %p sk %p", sock, sk);
+
+ lock_sock(sk);
+
+ *addr_len = sizeof(*haddr);
+ haddr->hci_family = AF_BLUETOOTH;
+ haddr->hci_dev = hci_pi(sk)->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)
+ put_cmsg(msg, SOL_HCI, HCI_CMSG_DIR, sizeof(int), &bt_cb(skb)->incoming);
+
+ if (mask & HCI_CMSG_TSTAMP)
+ put_cmsg(msg, SOL_HCI, HCI_CMSG_TSTAMP, sizeof(skb->stamp), &skb->stamp);
+}
+
+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;
+
+ if (!(skb = skb_recv_datagram(sk, flags, noblock, &err)))
+ return err;
+
+ msg->msg_namelen = 0;
+
+ copied = skb->len;
+ if (len < copied) {
+ msg->msg_flags |= MSG_TRUNC;
+ copied = len;
+ }
+
+ skb->h.raw = skb->data;
+ err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
+
+ hci_sock_cmsg(sk, msg, skb);
+
+ 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);
+
+ if (!(hdev = hci_pi(sk)->hdev)) {
+ err = -EBADFD;
+ goto done;
+ }
+
+ if (!(skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err)))
+ goto done;
+
+ if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) {
+ err = -EFAULT;
+ goto drop;
+ }
+
+ skb->pkt_type = *((unsigned char *) skb->data);
+ skb_pull(skb, 1);
+ skb->dev = (void *) hdev;
+
+ if (skb->pkt_type == HCI_COMMAND_PKT) {
+ u16 opcode = __le16_to_cpu(get_unaligned((u16 *)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 == OGF_VENDOR_CMD)) {
+ skb_queue_tail(&hdev->raw_q, skb);
+ hci_sched_tx(hdev);
+ } else {
+ skb_queue_tail(&hdev->cmd_q, skb);
+ hci_sched_cmd(hdev);
+ }
+ } else {
+ if (!capable(CAP_NET_RAW)) {
+ err = -EPERM;
+ goto drop;
+ }
+
+ skb_queue_tail(&hdev->raw_q, skb);
+ hci_sched_tx(hdev);
+ }
+
+ 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, 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);
+
+ 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:
+ 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;
+ }
+
+ 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;
+
+ if (get_user(len, optlen))
+ return -EFAULT;
+
+ 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))
+ return -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))
+ return -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))
+ return -EFAULT;
+ break;
+
+ default:
+ return -ENOPROTOOPT;
+ break;
+ }
+
+ return 0;
+}
+
+static 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 socket *sock, int protocol)
+{
+ struct sock *sk;
+
+ BT_DBG("sock %p", sock);
+
+ if (sock->type != SOCK_RAW)
+ return -ESOCKTNOSUPPORT;
+
+ sock->ops = &hci_sock_ops;
+
+ sk = sk_alloc(PF_BLUETOOTH, GFP_KERNEL, &hci_sk_proto, 1);
+ 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(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 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;
+}
+
+int __exit 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);
+
+ return 0;
+}