Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 707 insertions, 0 deletions

diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
new file mode 100644
index 000000000000..c9792ba75122
--- /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;
+}