Release 4.8 net/bluetooth/bnep/sock.c

/*
   BNEP implementation for Linux Bluetooth stack (BlueZ).
   Copyright (C) 2001-2002 Inventel Systemes
   Written 2001-2002 by
        David Libault  <david.libault@inventel.fr>

   Copyright (C) 2002 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.
*/

#include <linux/export.h>
#include <linux/file.h>

#include "bnep.h"


static struct bt_sock_list bnep_sk_list = {
	.lock = __RW_LOCK_UNLOCKED(bnep_sk_list.lock)
};



static int bnep_sock_release(struct socket *sock)
{
	struct sock *sk = sock->sk;

	BT_DBG("sock %p sk %p", sock, sk);

	if (!sk)
		return 0;

	bt_sock_unlink(&bnep_sk_list, sk);

	sock_orphan(sk);
	sock_put(sk);
	return 0;
}

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maksim krasnyanskiy
maksim krasnyanskiy
50
86.21%
1
50.00%
masatake yamato
masatake yamato
8
13.79%
1
50.00%
Total
58
100.00%
2
100.00%



static int bnep_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
	struct bnep_connlist_req cl;
	struct bnep_connadd_req  ca;
	struct bnep_conndel_req  cd;
	struct bnep_conninfo ci;
	struct socket *nsock;
	void __user *argp = (void __user *)arg;
	__u32 supp_feat = BIT(BNEP_SETUP_RESPONSE);
	int err;

	BT_DBG("cmd %x arg %lx", cmd, arg);

	switch (cmd) {
	case BNEPCONNADD:
		if (!capable(CAP_NET_ADMIN))
			return -EPERM;

		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) {
			sockfd_put(nsock);
			return -EBADFD;
		}
		ca.device[sizeof(ca.device)-1] = 0;

		err = bnep_add_connection(&ca, nsock);
		if (!err) {
			if (copy_to_user(argp, &ca, sizeof(ca)))
				err = -EFAULT;
		} else
			sockfd_put(nsock);

		return err;

	case BNEPCONNDEL:
		if (!capable(CAP_NET_ADMIN))
			return -EPERM;

		if (copy_from_user(&cd, argp, sizeof(cd)))
			return -EFAULT;

		return bnep_del_connection(&cd);

	case BNEPGETCONNLIST:
		if (copy_from_user(&cl, argp, sizeof(cl)))
			return -EFAULT;

		if (cl.cnum <= 0)
			return -EINVAL;

		err = bnep_get_connlist(&cl);
		if (!err && copy_to_user(argp, &cl, sizeof(cl)))
			return -EFAULT;

		return err;

	case BNEPGETCONNINFO:
		if (copy_from_user(&ci, argp, sizeof(ci)))
			return -EFAULT;

		err = bnep_get_conninfo(&ci);
		if (!err && copy_to_user(argp, &ci, sizeof(ci)))
			return -EFAULT;

		return err;

	case BNEPGETSUPPFEAT:
		if (copy_to_user(argp, &supp_feat, sizeof(supp_feat)))
			return -EFAULT;

		return 0;

	default:
		return -EINVAL;
	}

	return 0;
}

Contributors
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maksim krasnyanskiy
maksim krasnyanskiy
318
77.37%
1
10.00%
grzegorz kolodziejczyk
grzegorz kolodziejczyk
33
8.03%
2
20.00%
marcel holtmann
marcel holtmann
20
4.87%
2
20.00%
al viro
al viro
19
4.62%
1
10.00%
vasiliy kulikov
vasiliy kulikov
16
3.89%
1
10.00%
zhao hongjiang
zhao hongjiang
2
0.49%
1
10.00%
julia lawall
julia lawall
2
0.49%
1
10.00%
arnaldo carvalho de melo
arnaldo carvalho de melo
1
0.24%
1
10.00%
Total
411
100.00%
10
100.00%

#ifdef CONFIG_COMPAT


static int bnep_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
	if (cmd == BNEPGETCONNLIST) {
		struct bnep_connlist_req cl;
		u32 uci;
		int err;

		if (get_user(cl.cnum, (u32 __user *) arg) ||
				get_user(uci, (u32 __user *) (arg + 4)))
			return -EFAULT;

		cl.ci = compat_ptr(uci);

		if (cl.cnum <= 0)
			return -EINVAL;

		err = bnep_get_connlist(&cl);

		if (!err && put_user(cl.cnum, (u32 __user *) arg))
			err = -EFAULT;

		return err;
	}

	return bnep_sock_ioctl(sock, cmd, arg);
}
Contributors
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CommitProp
marcel holtmann
marcel holtmann
136
97.84%
1
50.00%
johan hedberg
johan hedberg
3
2.16%
1
50.00%
Total
139
100.00%
2
100.00%

#endif


static const struct proto_ops bnep_sock_ops = {
	.family		= PF_BLUETOOTH,
	.owner		= THIS_MODULE,
	.release	= bnep_sock_release,
	.ioctl		= bnep_sock_ioctl,
#ifdef CONFIG_COMPAT
	.compat_ioctl	= bnep_sock_compat_ioctl,
#endif
	.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 bnep_proto = {
	.name		= "BNEP",
	.owner		= THIS_MODULE,
	.obj_size	= sizeof(struct bt_sock)
};



static int bnep_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;

	sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &bnep_proto, kern);
	if (!sk)
		return -ENOMEM;

	sock_init_data(sock, sk);

	sock->ops = &bnep_sock_ops;

	sock->state = SS_UNCONNECTED;

	sock_reset_flag(sk, SOCK_ZAPPED);

	sk->sk_protocol = protocol;
	sk->sk_state	= BT_OPEN;

	bt_sock_link(&bnep_sk_list, sk);
	return 0;
}

Contributors
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maksim krasnyanskiy
maksim krasnyanskiy
72
59.50%
1
11.11%
marcel holtmann
marcel holtmann
21
17.36%
2
22.22%
eric w. biederman
eric w. biederman
9
7.44%
2
22.22%
arnaldo carvalho de melo
arnaldo carvalho de melo
8
6.61%
2
22.22%
masatake yamato
masatake yamato
8
6.61%
1
11.11%
eric paris
eric paris
3
2.48%
1
11.11%
Total
121
100.00%
9
100.00%


static const struct net_proto_family bnep_sock_family_ops = {
	.family = PF_BLUETOOTH,
	.owner	= THIS_MODULE,
	.create = bnep_sock_create
};



int __init bnep_sock_init(void)
{
	int err;

	err = proto_register(&bnep_proto, 0);
	if (err < 0)
		return err;

	err = bt_sock_register(BTPROTO_BNEP, &bnep_sock_family_ops);
	if (err < 0) {
		BT_ERR("Can't register BNEP socket");
		goto error;
	}

	err = bt_procfs_init(&init_net, "bnep", &bnep_sk_list, NULL);
	if (err < 0) {
		BT_ERR("Failed to create BNEP proc file");
		bt_sock_unregister(BTPROTO_BNEP);
		goto error;
	}

	BT_INFO("BNEP socket layer initialized");

	return 0;

error:
	proto_unregister(&bnep_proto);
	return err;
}

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masatake yamato
masatake yamato
48
43.24%
1
20.00%
arnaldo carvalho de melo
arnaldo carvalho de melo
46
41.44%
1
20.00%
maksim krasnyanskiy
maksim krasnyanskiy
17
15.32%
3
60.00%
Total
111
100.00%
5
100.00%



void __exit bnep_sock_cleanup(void)
{
	bt_procfs_cleanup(&init_net, "bnep");
	bt_sock_unregister(BTPROTO_BNEP);
	proto_unregister(&bnep_proto);
}
Contributors
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maksim krasnyanskiy
maksim krasnyanskiy
12
44.44%
3
50.00%
masatake yamato
masatake yamato
8
29.63%
1
16.67%
arnaldo carvalho de melo
arnaldo carvalho de melo
6
22.22%
1
16.67%
tobias klauser
tobias klauser
1
3.70%
1
16.67%
Total
27
100.00%
6
100.00%

Overall Contributors
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CommitProp
maksim krasnyanskiy
maksim krasnyanskiy
581
55.39%
3
10.71%
marcel holtmann
marcel holtmann
192
18.30%
5
17.86%
arnaldo carvalho de melo
arnaldo carvalho de melo
92
8.77%
3
10.71%
masatake yamato
masatake yamato
87
8.29%
1
3.57%
grzegorz kolodziejczyk
grzegorz kolodziejczyk
33
3.15%
2
7.14%
al viro
al viro
19
1.81%
1
3.57%
vasiliy kulikov
vasiliy kulikov
16
1.53%
1
3.57%
eric w. biederman
eric w. biederman
9
0.86%
2
7.14%
david woodhouse
david woodhouse
5
0.48%
1
3.57%
eric paris
eric paris
3
0.29%
1
3.57%
johan hedberg
johan hedberg
3
0.29%
1
3.57%
julia lawall
julia lawall
2
0.19%
1
3.57%
zhao hongjiang
zhao hongjiang
2
0.19%
1
3.57%
tobias klauser
tobias klauser
1
0.10%
1
3.57%
hideaki yoshifuji
hideaki yoshifuji
1
0.10%
1
3.57%
eric dumazet
eric dumazet
1
0.10%
1
3.57%
stephen hemminger
stephen hemminger
1
0.10%
1
3.57%
gustavo padovan
gustavo padovan
1
0.10%
1
3.57%
Total
1049
100.00%
28
100.00%
  
Directory: net/bluetooth/bnep

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