Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2)    CMTP implementation for Linux Bluetooth stack (BlueZ).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)    Copyright (C) 2002-2003 Marcel Holtmann <marcel@holtmann.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)    This program is free software; you can redistribute it and/or modify
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)    it under the terms of the GNU General Public License version 2 as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)    published by the Free Software Foundation;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)    IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13)    CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14)    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15)    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16)    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18)    ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19)    COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20)    SOFTWARE IS DISCLAIMED.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #include <linux/capability.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #include <linux/poll.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #include <linux/fcntl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #include <linux/skbuff.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #include <linux/socket.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #include <linux/ioctl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #include <linux/file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #include <linux/compat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #include <linux/gfp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) #include <net/sock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) #include <linux/isdn/capilli.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) #include "cmtp.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) static struct bt_sock_list cmtp_sk_list = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	.lock = __RW_LOCK_UNLOCKED(cmtp_sk_list.lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) static int cmtp_sock_release(struct socket *sock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	struct sock *sk = sock->sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	BT_DBG("sock %p sk %p", sock, sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	if (!sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	bt_sock_unlink(&cmtp_sk_list, sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	sock_orphan(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	sock_put(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) static int do_cmtp_sock_ioctl(struct socket *sock, unsigned int cmd, void __user *argp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	struct cmtp_connadd_req ca;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	struct cmtp_conndel_req cd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	struct cmtp_connlist_req cl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	struct cmtp_conninfo ci;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	struct socket *nsock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	BT_DBG("cmd %x arg %p", cmd, argp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	case CMTPCONNADD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 		if (!capable(CAP_NET_ADMIN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 			return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 		if (copy_from_user(&ca, argp, sizeof(ca)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 			return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 		nsock = sockfd_lookup(ca.sock, &err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 		if (!nsock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		if (nsock->sk->sk_state != BT_CONNECTED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 			sockfd_put(nsock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 			return -EBADFD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 		err = cmtp_add_connection(&ca, nsock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 		if (!err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 			if (copy_to_user(argp, &ca, sizeof(ca)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 				err = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 		} else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 			sockfd_put(nsock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	case CMTPCONNDEL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 		if (!capable(CAP_NET_ADMIN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 			return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 		if (copy_from_user(&cd, argp, sizeof(cd)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 			return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 		return cmtp_del_connection(&cd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	case CMTPGETCONNLIST:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 		if (copy_from_user(&cl, argp, sizeof(cl)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 			return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 		if (cl.cnum <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 			return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 		err = cmtp_get_connlist(&cl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 		if (!err && copy_to_user(argp, &cl, sizeof(cl)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 			return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	case CMTPGETCONNINFO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 		if (copy_from_user(&ci, argp, sizeof(ci)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 			return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 		err = cmtp_get_conninfo(&ci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 		if (!err && copy_to_user(argp, &ci, sizeof(ci)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 			return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) static int cmtp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	return do_cmtp_sock_ioctl(sock, cmd, (void __user *)arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) #ifdef CONFIG_COMPAT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) static int cmtp_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	void __user *argp = compat_ptr(arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	if (cmd == CMTPGETCONNLIST) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 		struct cmtp_connlist_req cl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 		u32 __user *p = argp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 		u32 uci;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 		int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 		if (get_user(cl.cnum, p) || get_user(uci, p + 1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 			return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 		cl.ci = compat_ptr(uci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 		if (cl.cnum <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 			return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 		err = cmtp_get_connlist(&cl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 		if (!err && put_user(cl.cnum, p))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 			err = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	return do_cmtp_sock_ioctl(sock, cmd, argp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) static const struct proto_ops cmtp_sock_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	.family		= PF_BLUETOOTH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	.owner		= THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	.release	= cmtp_sock_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	.ioctl		= cmtp_sock_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) #ifdef CONFIG_COMPAT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	.compat_ioctl	= cmtp_sock_compat_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	.bind		= sock_no_bind,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	.getname	= sock_no_getname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	.sendmsg	= sock_no_sendmsg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	.recvmsg	= sock_no_recvmsg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	.listen		= sock_no_listen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	.shutdown	= sock_no_shutdown,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	.connect	= sock_no_connect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	.socketpair	= sock_no_socketpair,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	.accept		= sock_no_accept,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	.mmap		= sock_no_mmap
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) static struct proto cmtp_proto = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	.name		= "CMTP",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	.owner		= THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	.obj_size	= sizeof(struct bt_sock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) static int cmtp_sock_create(struct net *net, struct socket *sock, int protocol,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 			    int kern)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	struct sock *sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	BT_DBG("sock %p", sock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	if (sock->type != SOCK_RAW)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 		return -ESOCKTNOSUPPORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &cmtp_proto, kern);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	if (!sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	sock_init_data(sock, sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	sock->ops = &cmtp_sock_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	sock->state = SS_UNCONNECTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	sock_reset_flag(sk, SOCK_ZAPPED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	sk->sk_protocol = protocol;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	sk->sk_state    = BT_OPEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	bt_sock_link(&cmtp_sk_list, sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) static const struct net_proto_family cmtp_sock_family_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	.family	= PF_BLUETOOTH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	.owner	= THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	.create	= cmtp_sock_create
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) int cmtp_init_sockets(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	err = proto_register(&cmtp_proto, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	err = bt_sock_register(BTPROTO_CMTP, &cmtp_sock_family_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 		BT_ERR("Can't register CMTP socket");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 		goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	err = bt_procfs_init(&init_net, "cmtp", &cmtp_sk_list, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 		BT_ERR("Failed to create CMTP proc file");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 		bt_sock_unregister(BTPROTO_HIDP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 		goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	BT_INFO("CMTP socket layer initialized");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	proto_unregister(&cmtp_proto);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) void cmtp_cleanup_sockets(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	bt_procfs_cleanup(&init_net, "cmtp");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	bt_sock_unregister(BTPROTO_CMTP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	proto_unregister(&cmtp_proto);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) }