/*
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);
}
Messung V0.5 in Prozent C=97 H=98 G=97
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-10-11)
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