diff options
Diffstat (limited to 'net/bluetooth/cmtp/sock.c')
| -rw-r--r-- | net/bluetooth/cmtp/sock.c | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/net/bluetooth/cmtp/sock.c b/net/bluetooth/cmtp/sock.c new file mode 100644 index 000000000000..4c7f9e20dade --- /dev/null +++ b/net/bluetooth/cmtp/sock.c @@ -0,0 +1,226 @@ +/* + CMTP implementation for Linux Bluetooth stack (BlueZ). + Copyright (C) 2002-2003 Marcel Holtmann <marcel@holtmann.org> + + 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. +*/ + +#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/skbuff.h> +#include <linux/socket.h> +#include <linux/ioctl.h> +#include <linux/file.h> +#include <net/sock.h> + +#include <linux/isdn/capilli.h> + +#include <asm/system.h> +#include <asm/uaccess.h> + +#include "cmtp.h" + +#ifndef CONFIG_BT_CMTP_DEBUG +#undef BT_DBG +#define BT_DBG(D...) +#endif + +static int cmtp_sock_release(struct socket *sock) +{ + struct sock *sk = sock->sk; + + BT_DBG("sock %p sk %p", sock, sk); + + if (!sk) + return 0; + + sock_orphan(sk); + sock_put(sk); + + return 0; +} + +static int cmtp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) +{ + struct cmtp_connadd_req ca; + struct cmtp_conndel_req cd; + struct cmtp_connlist_req cl; + struct cmtp_conninfo ci; + struct socket *nsock; + void __user *argp = (void __user *)arg; + int err; + + BT_DBG("cmd %x arg %lx", cmd, arg); + + switch (cmd) { + case CMTPCONNADD: + if (!capable(CAP_NET_ADMIN)) + return -EACCES; + + if (copy_from_user(&ca, argp, sizeof(ca))) + return -EFAULT; + + nsock = sockfd_lookup(ca.sock, &err); + if (!nsock) + return err; + + if (nsock->sk->sk_state != BT_CONNECTED) { + fput(nsock->file); + return -EBADFD; + } + + err = cmtp_add_connection(&ca, nsock); + if (!err) { + if (copy_to_user(argp, &ca, sizeof(ca))) + err = -EFAULT; + } else + fput(nsock->file); + + return err; + + case CMTPCONNDEL: + if (!capable(CAP_NET_ADMIN)) + return -EACCES; + + if (copy_from_user(&cd, argp, sizeof(cd))) + return -EFAULT; + + return cmtp_del_connection(&cd); + + case CMTPGETCONNLIST: + if (copy_from_user(&cl, argp, sizeof(cl))) + return -EFAULT; + + if (cl.cnum <= 0) + return -EINVAL; + + err = cmtp_get_connlist(&cl); + if (!err && copy_to_user(argp, &cl, sizeof(cl))) + return -EFAULT; + + return err; + + case CMTPGETCONNINFO: + if (copy_from_user(&ci, argp, sizeof(ci))) + return -EFAULT; + + err = cmtp_get_conninfo(&ci); + if (!err && copy_to_user(argp, &ci, sizeof(ci))) + return -EFAULT; + + return err; + } + + return -EINVAL; +} + +static struct proto_ops cmtp_sock_ops = { + .family = PF_BLUETOOTH, + .owner = THIS_MODULE, + .release = cmtp_sock_release, + .ioctl = cmtp_sock_ioctl, + .bind = sock_no_bind, + .getname = sock_no_getname, + .sendmsg = sock_no_sendmsg, + .recvmsg = sock_no_recvmsg, + .poll = sock_no_poll, + .listen = sock_no_listen, + .shutdown = sock_no_shutdown, + .setsockopt = sock_no_setsockopt, + .getsockopt = sock_no_getsockopt, + .connect = sock_no_connect, + .socketpair = sock_no_socketpair, + .accept = sock_no_accept, + .mmap = sock_no_mmap +}; + +static struct proto cmtp_proto = { + .name = "CMTP", + .owner = THIS_MODULE, + .obj_size = sizeof(struct bt_sock) +}; + +static int cmtp_sock_create(struct socket *sock, int protocol) +{ + struct sock *sk; + + BT_DBG("sock %p", sock); + + if (sock->type != SOCK_RAW) + return -ESOCKTNOSUPPORT; + + sk = sk_alloc(PF_BLUETOOTH, GFP_KERNEL, &cmtp_proto, 1); + if (!sk) + return -ENOMEM; + + sock_init_data(sock, sk); + + sock->ops = &cmtp_sock_ops; + + sock->state = SS_UNCONNECTED; + + sock_reset_flag(sk, SOCK_ZAPPED); + + sk->sk_protocol = protocol; + sk->sk_state = BT_OPEN; + + return 0; +} + +static struct net_proto_family cmtp_sock_family_ops = { + .family = PF_BLUETOOTH, + .owner = THIS_MODULE, + .create = cmtp_sock_create +}; + +int cmtp_init_sockets(void) +{ + int err; + + err = proto_register(&cmtp_proto, 0); + if (err < 0) + return err; + + err = bt_sock_register(BTPROTO_CMTP, &cmtp_sock_family_ops); + if (err < 0) + goto error; + + return 0; + +error: + BT_ERR("Can't register CMTP socket"); + proto_unregister(&cmtp_proto); + return err; +} + +void cmtp_cleanup_sockets(void) +{ + if (bt_sock_unregister(BTPROTO_CMTP) < 0) + BT_ERR("Can't unregister CMTP socket"); + + proto_unregister(&cmtp_proto); +} |