Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 267 insertions, 0 deletions

diff --git a/net/bluetooth/bnep/sock.c b/net/bluetooth/bnep/sock.c
new file mode 100644
index 000000000..d515571b2
--- /dev/null
+++ b/net/bluetooth/bnep/sock.c
@@ -0,0 +1,267 @@
+/*
+   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;
+}
+
+static int do_bnep_sock_ioctl(struct socket *sock, unsigned int cmd, void __user *argp)
+{
+	struct bnep_connlist_req cl;
+	struct bnep_connadd_req  ca;
+	struct bnep_conndel_req  cd;
+	struct bnep_conninfo ci;
+	struct socket *nsock;
+	__u32 supp_feat = BIT(BNEP_SETUP_RESPONSE);
+	int err;
+
+	BT_DBG("cmd %x arg %p", cmd, argp);
+
+	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;
+}
+
+static int bnep_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
+{
+	return do_bnep_sock_ioctl(sock, cmd, (void __user *)arg);
+}
+
+#ifdef CONFIG_COMPAT
+static int bnep_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
+{
+	void __user *argp = compat_ptr(arg);
+	if (cmd == BNEPGETCONNLIST) {
+		struct bnep_connlist_req cl;
+		unsigned __user *p = argp;
+		u32 uci;
+		int err;
+
+		if (get_user(cl.cnum, p) || get_user(uci, p + 1))
+			return -EFAULT;
+
+		cl.ci = compat_ptr(uci);
+
+		if (cl.cnum <= 0)
+			return -EINVAL;
+
+		err = bnep_get_connlist(&cl);
+
+		if (!err && put_user(cl.cnum, p))
+			err = -EFAULT;
+
+		return err;
+	}
+
+	return do_bnep_sock_ioctl(sock, cmd, argp);
+}
+#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,
+	.listen		= sock_no_listen,
+	.shutdown	= sock_no_shutdown,
+	.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;
+}
+
+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;
+}
+
+void __exit bnep_sock_cleanup(void)
+{
+	bt_procfs_cleanup(&init_net, "bnep");
+	bt_sock_unregister(BTPROTO_BNEP);
+	proto_unregister(&bnep_proto);
+}