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Diffstat (limited to 'net/bluetooth/hidp/sock.c')
-rw-r--r--net/bluetooth/hidp/sock.c312
1 files changed, 312 insertions, 0 deletions
diff --git a/net/bluetooth/hidp/sock.c b/net/bluetooth/hidp/sock.c
new file mode 100644
index 0000000000..c93aaeb3a3
--- /dev/null
+++ b/net/bluetooth/hidp/sock.c
@@ -0,0 +1,312 @@
+/*
+ HIDP implementation for Linux Bluetooth stack (BlueZ).
+ Copyright (C) 2003-2004 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/compat.h>
+#include <linux/export.h>
+#include <linux/file.h>
+
+#include "hidp.h"
+
+static struct bt_sock_list hidp_sk_list = {
+ .lock = __RW_LOCK_UNLOCKED(hidp_sk_list.lock)
+};
+
+static int hidp_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(&hidp_sk_list, sk);
+
+ sock_orphan(sk);
+ sock_put(sk);
+
+ return 0;
+}
+
+static int do_hidp_sock_ioctl(struct socket *sock, unsigned int cmd, void __user *argp)
+{
+ struct hidp_connadd_req ca;
+ struct hidp_conndel_req cd;
+ struct hidp_connlist_req cl;
+ struct hidp_conninfo ci;
+ struct socket *csock;
+ struct socket *isock;
+ int err;
+
+ BT_DBG("cmd %x arg %p", cmd, argp);
+
+ switch (cmd) {
+ case HIDPCONNADD:
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
+ if (copy_from_user(&ca, argp, sizeof(ca)))
+ return -EFAULT;
+
+ csock = sockfd_lookup(ca.ctrl_sock, &err);
+ if (!csock)
+ return err;
+
+ isock = sockfd_lookup(ca.intr_sock, &err);
+ if (!isock) {
+ sockfd_put(csock);
+ return err;
+ }
+ ca.name[sizeof(ca.name)-1] = 0;
+
+ err = hidp_connection_add(&ca, csock, isock);
+ if (!err && copy_to_user(argp, &ca, sizeof(ca)))
+ err = -EFAULT;
+
+ sockfd_put(csock);
+ sockfd_put(isock);
+
+ return err;
+
+ case HIDPCONNDEL:
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
+ if (copy_from_user(&cd, argp, sizeof(cd)))
+ return -EFAULT;
+
+ return hidp_connection_del(&cd);
+
+ case HIDPGETCONNLIST:
+ if (copy_from_user(&cl, argp, sizeof(cl)))
+ return -EFAULT;
+
+ if (cl.cnum <= 0)
+ return -EINVAL;
+
+ err = hidp_get_connlist(&cl);
+ if (!err && copy_to_user(argp, &cl, sizeof(cl)))
+ return -EFAULT;
+
+ return err;
+
+ case HIDPGETCONNINFO:
+ if (copy_from_user(&ci, argp, sizeof(ci)))
+ return -EFAULT;
+
+ err = hidp_get_conninfo(&ci);
+ if (!err && copy_to_user(argp, &ci, sizeof(ci)))
+ return -EFAULT;
+
+ return err;
+ }
+
+ return -EINVAL;
+}
+
+static int hidp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
+{
+ return do_hidp_sock_ioctl(sock, cmd, (void __user *)arg);
+}
+
+#ifdef CONFIG_COMPAT
+struct compat_hidp_connadd_req {
+ int ctrl_sock; /* Connected control socket */
+ int intr_sock; /* Connected interrupt socket */
+ __u16 parser;
+ __u16 rd_size;
+ compat_uptr_t rd_data;
+ __u8 country;
+ __u8 subclass;
+ __u16 vendor;
+ __u16 product;
+ __u16 version;
+ __u32 flags;
+ __u32 idle_to;
+ char name[128];
+};
+
+static int hidp_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
+{
+ void __user *argp = compat_ptr(arg);
+ int err;
+
+ if (cmd == HIDPGETCONNLIST) {
+ struct hidp_connlist_req cl;
+ u32 __user *p = argp;
+ u32 uci;
+
+ 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 = hidp_get_connlist(&cl);
+
+ if (!err && put_user(cl.cnum, p))
+ err = -EFAULT;
+
+ return err;
+ } else if (cmd == HIDPCONNADD) {
+ struct compat_hidp_connadd_req ca32;
+ struct hidp_connadd_req ca;
+ struct socket *csock;
+ struct socket *isock;
+
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
+ if (copy_from_user(&ca32, (void __user *) arg, sizeof(ca32)))
+ return -EFAULT;
+
+ ca.ctrl_sock = ca32.ctrl_sock;
+ ca.intr_sock = ca32.intr_sock;
+ ca.parser = ca32.parser;
+ ca.rd_size = ca32.rd_size;
+ ca.rd_data = compat_ptr(ca32.rd_data);
+ ca.country = ca32.country;
+ ca.subclass = ca32.subclass;
+ ca.vendor = ca32.vendor;
+ ca.product = ca32.product;
+ ca.version = ca32.version;
+ ca.flags = ca32.flags;
+ ca.idle_to = ca32.idle_to;
+ ca32.name[sizeof(ca32.name) - 1] = '\0';
+ memcpy(ca.name, ca32.name, 128);
+
+ csock = sockfd_lookup(ca.ctrl_sock, &err);
+ if (!csock)
+ return err;
+
+ isock = sockfd_lookup(ca.intr_sock, &err);
+ if (!isock) {
+ sockfd_put(csock);
+ return err;
+ }
+
+ err = hidp_connection_add(&ca, csock, isock);
+ if (!err && copy_to_user(argp, &ca32, sizeof(ca32)))
+ err = -EFAULT;
+
+ sockfd_put(csock);
+ sockfd_put(isock);
+
+ return err;
+ }
+
+ return hidp_sock_ioctl(sock, cmd, arg);
+}
+#endif
+
+static const struct proto_ops hidp_sock_ops = {
+ .family = PF_BLUETOOTH,
+ .owner = THIS_MODULE,
+ .release = hidp_sock_release,
+ .ioctl = hidp_sock_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = hidp_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 hidp_proto = {
+ .name = "HIDP",
+ .owner = THIS_MODULE,
+ .obj_size = sizeof(struct bt_sock)
+};
+
+static int hidp_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 = bt_sock_alloc(net, sock, &hidp_proto, protocol, GFP_ATOMIC, kern);
+ if (!sk)
+ return -ENOMEM;
+
+ sock->ops = &hidp_sock_ops;
+ sock->state = SS_UNCONNECTED;
+
+ bt_sock_link(&hidp_sk_list, sk);
+
+ return 0;
+}
+
+static const struct net_proto_family hidp_sock_family_ops = {
+ .family = PF_BLUETOOTH,
+ .owner = THIS_MODULE,
+ .create = hidp_sock_create
+};
+
+int __init hidp_init_sockets(void)
+{
+ int err;
+
+ err = proto_register(&hidp_proto, 0);
+ if (err < 0)
+ return err;
+
+ err = bt_sock_register(BTPROTO_HIDP, &hidp_sock_family_ops);
+ if (err < 0) {
+ BT_ERR("Can't register HIDP socket");
+ goto error;
+ }
+
+ err = bt_procfs_init(&init_net, "hidp", &hidp_sk_list, NULL);
+ if (err < 0) {
+ BT_ERR("Failed to create HIDP proc file");
+ bt_sock_unregister(BTPROTO_HIDP);
+ goto error;
+ }
+
+ BT_INFO("HIDP socket layer initialized");
+
+ return 0;
+
+error:
+ proto_unregister(&hidp_proto);
+ return err;
+}
+
+void __exit hidp_cleanup_sockets(void)
+{
+ bt_procfs_cleanup(&init_net, "hidp");
+ bt_sock_unregister(BTPROTO_HIDP);
+ proto_unregister(&hidp_proto);
+}