826 lines
17 KiB
C
826 lines
17 KiB
C
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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*
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* Author Karsten Keil <kkeil@novell.com>
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*
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* Copyright 2008 by Karsten Keil <kkeil@novell.com>
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*/
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#include <linux/mISDNif.h>
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#include <linux/slab.h>
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#include <linux/export.h>
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#include "core.h"
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static u_int *debug;
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static struct proto mISDN_proto = {
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.name = "misdn",
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.owner = THIS_MODULE,
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.obj_size = sizeof(struct mISDN_sock)
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};
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#define _pms(sk) ((struct mISDN_sock *)sk)
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static struct mISDN_sock_list data_sockets = {
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.lock = __RW_LOCK_UNLOCKED(data_sockets.lock)
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};
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static struct mISDN_sock_list base_sockets = {
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.lock = __RW_LOCK_UNLOCKED(base_sockets.lock)
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};
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#define L2_HEADER_LEN 4
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static inline struct sk_buff *
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_l2_alloc_skb(unsigned int len, gfp_t gfp_mask)
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{
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struct sk_buff *skb;
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skb = alloc_skb(len + L2_HEADER_LEN, gfp_mask);
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if (likely(skb))
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skb_reserve(skb, L2_HEADER_LEN);
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return skb;
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}
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static void
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mISDN_sock_link(struct mISDN_sock_list *l, struct sock *sk)
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{
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write_lock_bh(&l->lock);
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sk_add_node(sk, &l->head);
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write_unlock_bh(&l->lock);
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}
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static void mISDN_sock_unlink(struct mISDN_sock_list *l, struct sock *sk)
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{
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write_lock_bh(&l->lock);
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sk_del_node_init(sk);
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write_unlock_bh(&l->lock);
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}
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static int
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mISDN_send(struct mISDNchannel *ch, struct sk_buff *skb)
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{
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struct mISDN_sock *msk;
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int err;
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msk = container_of(ch, struct mISDN_sock, ch);
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if (*debug & DEBUG_SOCKET)
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printk(KERN_DEBUG "%s len %d %p\n", __func__, skb->len, skb);
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if (msk->sk.sk_state == MISDN_CLOSED)
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return -EUNATCH;
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__net_timestamp(skb);
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err = sock_queue_rcv_skb(&msk->sk, skb);
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if (err)
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printk(KERN_WARNING "%s: error %d\n", __func__, err);
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return err;
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}
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static int
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mISDN_ctrl(struct mISDNchannel *ch, u_int cmd, void *arg)
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{
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struct mISDN_sock *msk;
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msk = container_of(ch, struct mISDN_sock, ch);
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if (*debug & DEBUG_SOCKET)
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printk(KERN_DEBUG "%s(%p, %x, %p)\n", __func__, ch, cmd, arg);
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switch (cmd) {
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case CLOSE_CHANNEL:
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msk->sk.sk_state = MISDN_CLOSED;
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break;
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}
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return 0;
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}
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static inline void
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mISDN_sock_cmsg(struct sock *sk, struct msghdr *msg, struct sk_buff *skb)
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{
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struct __kernel_old_timeval tv;
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if (_pms(sk)->cmask & MISDN_TIME_STAMP) {
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skb_get_timestamp(skb, &tv);
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put_cmsg(msg, SOL_MISDN, MISDN_TIME_STAMP, sizeof(tv), &tv);
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}
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}
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static int
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mISDN_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
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int flags)
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{
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struct sk_buff *skb;
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struct sock *sk = sock->sk;
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int copied, err;
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if (*debug & DEBUG_SOCKET)
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printk(KERN_DEBUG "%s: len %d, flags %x ch.nr %d, proto %x\n",
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__func__, (int)len, flags, _pms(sk)->ch.nr,
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sk->sk_protocol);
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if (flags & (MSG_OOB))
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return -EOPNOTSUPP;
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if (sk->sk_state == MISDN_CLOSED)
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return 0;
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skb = skb_recv_datagram(sk, flags, &err);
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if (!skb)
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return err;
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if (msg->msg_name) {
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DECLARE_SOCKADDR(struct sockaddr_mISDN *, maddr, msg->msg_name);
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maddr->family = AF_ISDN;
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maddr->dev = _pms(sk)->dev->id;
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if ((sk->sk_protocol == ISDN_P_LAPD_TE) ||
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(sk->sk_protocol == ISDN_P_LAPD_NT)) {
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maddr->channel = (mISDN_HEAD_ID(skb) >> 16) & 0xff;
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maddr->tei = (mISDN_HEAD_ID(skb) >> 8) & 0xff;
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maddr->sapi = mISDN_HEAD_ID(skb) & 0xff;
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} else {
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maddr->channel = _pms(sk)->ch.nr;
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maddr->sapi = _pms(sk)->ch.addr & 0xFF;
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maddr->tei = (_pms(sk)->ch.addr >> 8) & 0xFF;
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}
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msg->msg_namelen = sizeof(*maddr);
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}
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copied = skb->len + MISDN_HEADER_LEN;
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if (len < copied) {
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if (flags & MSG_PEEK)
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refcount_dec(&skb->users);
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else
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skb_queue_head(&sk->sk_receive_queue, skb);
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return -ENOSPC;
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}
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memcpy(skb_push(skb, MISDN_HEADER_LEN), mISDN_HEAD_P(skb),
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MISDN_HEADER_LEN);
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err = skb_copy_datagram_msg(skb, 0, msg, copied);
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mISDN_sock_cmsg(sk, msg, skb);
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skb_free_datagram(sk, skb);
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return err ? : copied;
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}
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static int
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mISDN_sock_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
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{
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struct sock *sk = sock->sk;
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struct sk_buff *skb;
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int err = -ENOMEM;
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if (*debug & DEBUG_SOCKET)
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printk(KERN_DEBUG "%s: len %d flags %x ch %d proto %x\n",
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__func__, (int)len, msg->msg_flags, _pms(sk)->ch.nr,
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sk->sk_protocol);
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if (msg->msg_flags & MSG_OOB)
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return -EOPNOTSUPP;
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if (msg->msg_flags & ~(MSG_DONTWAIT | MSG_NOSIGNAL | MSG_ERRQUEUE))
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return -EINVAL;
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if (len < MISDN_HEADER_LEN)
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return -EINVAL;
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if (sk->sk_state != MISDN_BOUND)
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return -EBADFD;
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lock_sock(sk);
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skb = _l2_alloc_skb(len, GFP_KERNEL);
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if (!skb)
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goto done;
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if (memcpy_from_msg(skb_put(skb, len), msg, len)) {
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err = -EFAULT;
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goto done;
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}
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memcpy(mISDN_HEAD_P(skb), skb->data, MISDN_HEADER_LEN);
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skb_pull(skb, MISDN_HEADER_LEN);
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if (msg->msg_namelen >= sizeof(struct sockaddr_mISDN)) {
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/* if we have a address, we use it */
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DECLARE_SOCKADDR(struct sockaddr_mISDN *, maddr, msg->msg_name);
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mISDN_HEAD_ID(skb) = maddr->channel;
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} else { /* use default for L2 messages */
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if ((sk->sk_protocol == ISDN_P_LAPD_TE) ||
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(sk->sk_protocol == ISDN_P_LAPD_NT))
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mISDN_HEAD_ID(skb) = _pms(sk)->ch.nr;
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}
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if (*debug & DEBUG_SOCKET)
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printk(KERN_DEBUG "%s: ID:%x\n",
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__func__, mISDN_HEAD_ID(skb));
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err = -ENODEV;
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if (!_pms(sk)->ch.peer)
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goto done;
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err = _pms(sk)->ch.recv(_pms(sk)->ch.peer, skb);
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if (err)
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goto done;
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else {
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skb = NULL;
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err = len;
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}
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done:
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kfree_skb(skb);
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release_sock(sk);
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return err;
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}
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static int
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data_sock_release(struct socket *sock)
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{
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struct sock *sk = sock->sk;
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if (*debug & DEBUG_SOCKET)
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printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk);
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if (!sk)
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return 0;
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switch (sk->sk_protocol) {
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case ISDN_P_TE_S0:
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case ISDN_P_NT_S0:
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case ISDN_P_TE_E1:
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case ISDN_P_NT_E1:
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if (sk->sk_state == MISDN_BOUND)
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delete_channel(&_pms(sk)->ch);
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else
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mISDN_sock_unlink(&data_sockets, sk);
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break;
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case ISDN_P_LAPD_TE:
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case ISDN_P_LAPD_NT:
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case ISDN_P_B_RAW:
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case ISDN_P_B_HDLC:
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case ISDN_P_B_X75SLP:
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case ISDN_P_B_L2DTMF:
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case ISDN_P_B_L2DSP:
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case ISDN_P_B_L2DSPHDLC:
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delete_channel(&_pms(sk)->ch);
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mISDN_sock_unlink(&data_sockets, sk);
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break;
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}
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lock_sock(sk);
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sock_orphan(sk);
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skb_queue_purge(&sk->sk_receive_queue);
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release_sock(sk);
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sock_put(sk);
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return 0;
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}
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static int
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data_sock_ioctl_bound(struct sock *sk, unsigned int cmd, void __user *p)
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{
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struct mISDN_ctrl_req cq;
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int err = -EINVAL, val[2];
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struct mISDNchannel *bchan, *next;
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lock_sock(sk);
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if (!_pms(sk)->dev) {
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err = -ENODEV;
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goto done;
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}
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switch (cmd) {
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case IMCTRLREQ:
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if (copy_from_user(&cq, p, sizeof(cq))) {
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err = -EFAULT;
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break;
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}
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if ((sk->sk_protocol & ~ISDN_P_B_MASK) == ISDN_P_B_START) {
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list_for_each_entry_safe(bchan, next,
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&_pms(sk)->dev->bchannels, list) {
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if (bchan->nr == cq.channel) {
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err = bchan->ctrl(bchan,
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CONTROL_CHANNEL, &cq);
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break;
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}
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}
|
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} else
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err = _pms(sk)->dev->D.ctrl(&_pms(sk)->dev->D,
|
||
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CONTROL_CHANNEL, &cq);
|
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|
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if (err)
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break;
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if (copy_to_user(p, &cq, sizeof(cq)))
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err = -EFAULT;
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break;
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||
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case IMCLEAR_L2:
|
||
|
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if (sk->sk_protocol != ISDN_P_LAPD_NT) {
|
||
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err = -EINVAL;
|
||
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break;
|
||
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}
|
||
|
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val[0] = cmd;
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||
|
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if (get_user(val[1], (int __user *)p)) {
|
||
|
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err = -EFAULT;
|
||
|
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break;
|
||
|
|
}
|
||
|
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err = _pms(sk)->dev->teimgr->ctrl(_pms(sk)->dev->teimgr,
|
||
|
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CONTROL_CHANNEL, val);
|
||
|
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break;
|
||
|
|
case IMHOLD_L1:
|
||
|
|
if (sk->sk_protocol != ISDN_P_LAPD_NT
|
||
|
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&& sk->sk_protocol != ISDN_P_LAPD_TE) {
|
||
|
|
err = -EINVAL;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
val[0] = cmd;
|
||
|
|
if (get_user(val[1], (int __user *)p)) {
|
||
|
|
err = -EFAULT;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
err = _pms(sk)->dev->teimgr->ctrl(_pms(sk)->dev->teimgr,
|
||
|
|
CONTROL_CHANNEL, val);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
err = -EINVAL;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
done:
|
||
|
|
release_sock(sk);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
data_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
|
||
|
|
{
|
||
|
|
int err = 0, id;
|
||
|
|
struct sock *sk = sock->sk;
|
||
|
|
struct mISDNdevice *dev;
|
||
|
|
struct mISDNversion ver;
|
||
|
|
|
||
|
|
switch (cmd) {
|
||
|
|
case IMGETVERSION:
|
||
|
|
ver.major = MISDN_MAJOR_VERSION;
|
||
|
|
ver.minor = MISDN_MINOR_VERSION;
|
||
|
|
ver.release = MISDN_RELEASE;
|
||
|
|
if (copy_to_user((void __user *)arg, &ver, sizeof(ver)))
|
||
|
|
err = -EFAULT;
|
||
|
|
break;
|
||
|
|
case IMGETCOUNT:
|
||
|
|
id = get_mdevice_count();
|
||
|
|
if (put_user(id, (int __user *)arg))
|
||
|
|
err = -EFAULT;
|
||
|
|
break;
|
||
|
|
case IMGETDEVINFO:
|
||
|
|
if (get_user(id, (int __user *)arg)) {
|
||
|
|
err = -EFAULT;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
dev = get_mdevice(id);
|
||
|
|
if (dev) {
|
||
|
|
struct mISDN_devinfo di;
|
||
|
|
|
||
|
|
memset(&di, 0, sizeof(di));
|
||
|
|
di.id = dev->id;
|
||
|
|
di.Dprotocols = dev->Dprotocols;
|
||
|
|
di.Bprotocols = dev->Bprotocols | get_all_Bprotocols();
|
||
|
|
di.protocol = dev->D.protocol;
|
||
|
|
memcpy(di.channelmap, dev->channelmap,
|
||
|
|
sizeof(di.channelmap));
|
||
|
|
di.nrbchan = dev->nrbchan;
|
||
|
|
strscpy(di.name, dev_name(&dev->dev), sizeof(di.name));
|
||
|
|
if (copy_to_user((void __user *)arg, &di, sizeof(di)))
|
||
|
|
err = -EFAULT;
|
||
|
|
} else
|
||
|
|
err = -ENODEV;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
if (sk->sk_state == MISDN_BOUND)
|
||
|
|
err = data_sock_ioctl_bound(sk, cmd,
|
||
|
|
(void __user *)arg);
|
||
|
|
else
|
||
|
|
err = -ENOTCONN;
|
||
|
|
}
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int data_sock_setsockopt(struct socket *sock, int level, int optname,
|
||
|
|
sockptr_t optval, unsigned int len)
|
||
|
|
{
|
||
|
|
struct sock *sk = sock->sk;
|
||
|
|
int err = 0, opt = 0;
|
||
|
|
|
||
|
|
if (*debug & DEBUG_SOCKET)
|
||
|
|
printk(KERN_DEBUG "%s(%p, %d, %x, optval, %d)\n", __func__, sock,
|
||
|
|
level, optname, len);
|
||
|
|
|
||
|
|
lock_sock(sk);
|
||
|
|
|
||
|
|
switch (optname) {
|
||
|
|
case MISDN_TIME_STAMP:
|
||
|
|
if (copy_from_sockptr(&opt, optval, sizeof(int))) {
|
||
|
|
err = -EFAULT;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (opt)
|
||
|
|
_pms(sk)->cmask |= MISDN_TIME_STAMP;
|
||
|
|
else
|
||
|
|
_pms(sk)->cmask &= ~MISDN_TIME_STAMP;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
err = -ENOPROTOOPT;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
release_sock(sk);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int data_sock_getsockopt(struct socket *sock, int level, int optname,
|
||
|
|
char __user *optval, int __user *optlen)
|
||
|
|
{
|
||
|
|
struct sock *sk = sock->sk;
|
||
|
|
int len, opt;
|
||
|
|
|
||
|
|
if (get_user(len, optlen))
|
||
|
|
return -EFAULT;
|
||
|
|
|
||
|
|
if (len != sizeof(char))
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
switch (optname) {
|
||
|
|
case MISDN_TIME_STAMP:
|
||
|
|
if (_pms(sk)->cmask & MISDN_TIME_STAMP)
|
||
|
|
opt = 1;
|
||
|
|
else
|
||
|
|
opt = 0;
|
||
|
|
|
||
|
|
if (put_user(opt, optval))
|
||
|
|
return -EFAULT;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return -ENOPROTOOPT;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
data_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
|
||
|
|
{
|
||
|
|
struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr;
|
||
|
|
struct sock *sk = sock->sk;
|
||
|
|
struct sock *csk;
|
||
|
|
int err = 0;
|
||
|
|
|
||
|
|
if (*debug & DEBUG_SOCKET)
|
||
|
|
printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk);
|
||
|
|
if (addr_len != sizeof(struct sockaddr_mISDN))
|
||
|
|
return -EINVAL;
|
||
|
|
if (!maddr || maddr->family != AF_ISDN)
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
lock_sock(sk);
|
||
|
|
|
||
|
|
if (_pms(sk)->dev) {
|
||
|
|
err = -EALREADY;
|
||
|
|
goto done;
|
||
|
|
}
|
||
|
|
_pms(sk)->dev = get_mdevice(maddr->dev);
|
||
|
|
if (!_pms(sk)->dev) {
|
||
|
|
err = -ENODEV;
|
||
|
|
goto done;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (sk->sk_protocol < ISDN_P_B_START) {
|
||
|
|
read_lock_bh(&data_sockets.lock);
|
||
|
|
sk_for_each(csk, &data_sockets.head) {
|
||
|
|
if (sk == csk)
|
||
|
|
continue;
|
||
|
|
if (_pms(csk)->dev != _pms(sk)->dev)
|
||
|
|
continue;
|
||
|
|
if (csk->sk_protocol >= ISDN_P_B_START)
|
||
|
|
continue;
|
||
|
|
if (IS_ISDN_P_TE(csk->sk_protocol)
|
||
|
|
== IS_ISDN_P_TE(sk->sk_protocol))
|
||
|
|
continue;
|
||
|
|
read_unlock_bh(&data_sockets.lock);
|
||
|
|
err = -EBUSY;
|
||
|
|
goto done;
|
||
|
|
}
|
||
|
|
read_unlock_bh(&data_sockets.lock);
|
||
|
|
}
|
||
|
|
|
||
|
|
_pms(sk)->ch.send = mISDN_send;
|
||
|
|
_pms(sk)->ch.ctrl = mISDN_ctrl;
|
||
|
|
|
||
|
|
switch (sk->sk_protocol) {
|
||
|
|
case ISDN_P_TE_S0:
|
||
|
|
case ISDN_P_NT_S0:
|
||
|
|
case ISDN_P_TE_E1:
|
||
|
|
case ISDN_P_NT_E1:
|
||
|
|
mISDN_sock_unlink(&data_sockets, sk);
|
||
|
|
err = connect_layer1(_pms(sk)->dev, &_pms(sk)->ch,
|
||
|
|
sk->sk_protocol, maddr);
|
||
|
|
if (err)
|
||
|
|
mISDN_sock_link(&data_sockets, sk);
|
||
|
|
break;
|
||
|
|
case ISDN_P_LAPD_TE:
|
||
|
|
case ISDN_P_LAPD_NT:
|
||
|
|
err = create_l2entity(_pms(sk)->dev, &_pms(sk)->ch,
|
||
|
|
sk->sk_protocol, maddr);
|
||
|
|
break;
|
||
|
|
case ISDN_P_B_RAW:
|
||
|
|
case ISDN_P_B_HDLC:
|
||
|
|
case ISDN_P_B_X75SLP:
|
||
|
|
case ISDN_P_B_L2DTMF:
|
||
|
|
case ISDN_P_B_L2DSP:
|
||
|
|
case ISDN_P_B_L2DSPHDLC:
|
||
|
|
err = connect_Bstack(_pms(sk)->dev, &_pms(sk)->ch,
|
||
|
|
sk->sk_protocol, maddr);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
err = -EPROTONOSUPPORT;
|
||
|
|
}
|
||
|
|
if (err)
|
||
|
|
goto done;
|
||
|
|
sk->sk_state = MISDN_BOUND;
|
||
|
|
_pms(sk)->ch.protocol = sk->sk_protocol;
|
||
|
|
|
||
|
|
done:
|
||
|
|
release_sock(sk);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
data_sock_getname(struct socket *sock, struct sockaddr *addr,
|
||
|
|
int peer)
|
||
|
|
{
|
||
|
|
struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr;
|
||
|
|
struct sock *sk = sock->sk;
|
||
|
|
|
||
|
|
if (!_pms(sk)->dev)
|
||
|
|
return -EBADFD;
|
||
|
|
|
||
|
|
lock_sock(sk);
|
||
|
|
|
||
|
|
maddr->family = AF_ISDN;
|
||
|
|
maddr->dev = _pms(sk)->dev->id;
|
||
|
|
maddr->channel = _pms(sk)->ch.nr;
|
||
|
|
maddr->sapi = _pms(sk)->ch.addr & 0xff;
|
||
|
|
maddr->tei = (_pms(sk)->ch.addr >> 8) & 0xff;
|
||
|
|
release_sock(sk);
|
||
|
|
return sizeof(*maddr);
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct proto_ops data_sock_ops = {
|
||
|
|
.family = PF_ISDN,
|
||
|
|
.owner = THIS_MODULE,
|
||
|
|
.release = data_sock_release,
|
||
|
|
.ioctl = data_sock_ioctl,
|
||
|
|
.bind = data_sock_bind,
|
||
|
|
.getname = data_sock_getname,
|
||
|
|
.sendmsg = mISDN_sock_sendmsg,
|
||
|
|
.recvmsg = mISDN_sock_recvmsg,
|
||
|
|
.poll = datagram_poll,
|
||
|
|
.listen = sock_no_listen,
|
||
|
|
.shutdown = sock_no_shutdown,
|
||
|
|
.setsockopt = data_sock_setsockopt,
|
||
|
|
.getsockopt = data_sock_getsockopt,
|
||
|
|
.connect = sock_no_connect,
|
||
|
|
.socketpair = sock_no_socketpair,
|
||
|
|
.accept = sock_no_accept,
|
||
|
|
.mmap = sock_no_mmap
|
||
|
|
};
|
||
|
|
|
||
|
|
static int
|
||
|
|
data_sock_create(struct net *net, struct socket *sock, int protocol, int kern)
|
||
|
|
{
|
||
|
|
struct sock *sk;
|
||
|
|
|
||
|
|
if (sock->type != SOCK_DGRAM)
|
||
|
|
return -ESOCKTNOSUPPORT;
|
||
|
|
|
||
|
|
sk = sk_alloc(net, PF_ISDN, GFP_KERNEL, &mISDN_proto, kern);
|
||
|
|
if (!sk)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
sock_init_data(sock, sk);
|
||
|
|
|
||
|
|
sock->ops = &data_sock_ops;
|
||
|
|
sock->state = SS_UNCONNECTED;
|
||
|
|
sock_reset_flag(sk, SOCK_ZAPPED);
|
||
|
|
|
||
|
|
sk->sk_protocol = protocol;
|
||
|
|
sk->sk_state = MISDN_OPEN;
|
||
|
|
mISDN_sock_link(&data_sockets, sk);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
base_sock_release(struct socket *sock)
|
||
|
|
{
|
||
|
|
struct sock *sk = sock->sk;
|
||
|
|
|
||
|
|
printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk);
|
||
|
|
if (!sk)
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
mISDN_sock_unlink(&base_sockets, sk);
|
||
|
|
sock_orphan(sk);
|
||
|
|
sock_put(sk);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
base_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
|
||
|
|
{
|
||
|
|
int err = 0, id;
|
||
|
|
struct mISDNdevice *dev;
|
||
|
|
struct mISDNversion ver;
|
||
|
|
|
||
|
|
switch (cmd) {
|
||
|
|
case IMGETVERSION:
|
||
|
|
ver.major = MISDN_MAJOR_VERSION;
|
||
|
|
ver.minor = MISDN_MINOR_VERSION;
|
||
|
|
ver.release = MISDN_RELEASE;
|
||
|
|
if (copy_to_user((void __user *)arg, &ver, sizeof(ver)))
|
||
|
|
err = -EFAULT;
|
||
|
|
break;
|
||
|
|
case IMGETCOUNT:
|
||
|
|
id = get_mdevice_count();
|
||
|
|
if (put_user(id, (int __user *)arg))
|
||
|
|
err = -EFAULT;
|
||
|
|
break;
|
||
|
|
case IMGETDEVINFO:
|
||
|
|
if (get_user(id, (int __user *)arg)) {
|
||
|
|
err = -EFAULT;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
dev = get_mdevice(id);
|
||
|
|
if (dev) {
|
||
|
|
struct mISDN_devinfo di;
|
||
|
|
|
||
|
|
memset(&di, 0, sizeof(di));
|
||
|
|
di.id = dev->id;
|
||
|
|
di.Dprotocols = dev->Dprotocols;
|
||
|
|
di.Bprotocols = dev->Bprotocols | get_all_Bprotocols();
|
||
|
|
di.protocol = dev->D.protocol;
|
||
|
|
memcpy(di.channelmap, dev->channelmap,
|
||
|
|
sizeof(di.channelmap));
|
||
|
|
di.nrbchan = dev->nrbchan;
|
||
|
|
strscpy(di.name, dev_name(&dev->dev), sizeof(di.name));
|
||
|
|
if (copy_to_user((void __user *)arg, &di, sizeof(di)))
|
||
|
|
err = -EFAULT;
|
||
|
|
} else
|
||
|
|
err = -ENODEV;
|
||
|
|
break;
|
||
|
|
case IMSETDEVNAME:
|
||
|
|
{
|
||
|
|
struct mISDN_devrename dn;
|
||
|
|
if (copy_from_user(&dn, (void __user *)arg,
|
||
|
|
sizeof(dn))) {
|
||
|
|
err = -EFAULT;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
dn.name[sizeof(dn.name) - 1] = '\0';
|
||
|
|
dev = get_mdevice(dn.id);
|
||
|
|
if (dev)
|
||
|
|
err = device_rename(&dev->dev, dn.name);
|
||
|
|
else
|
||
|
|
err = -ENODEV;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
err = -EINVAL;
|
||
|
|
}
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
base_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
|
||
|
|
{
|
||
|
|
struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr;
|
||
|
|
struct sock *sk = sock->sk;
|
||
|
|
int err = 0;
|
||
|
|
|
||
|
|
if (addr_len < sizeof(struct sockaddr_mISDN))
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
if (!maddr || maddr->family != AF_ISDN)
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
lock_sock(sk);
|
||
|
|
|
||
|
|
if (_pms(sk)->dev) {
|
||
|
|
err = -EALREADY;
|
||
|
|
goto done;
|
||
|
|
}
|
||
|
|
|
||
|
|
_pms(sk)->dev = get_mdevice(maddr->dev);
|
||
|
|
if (!_pms(sk)->dev) {
|
||
|
|
err = -ENODEV;
|
||
|
|
goto done;
|
||
|
|
}
|
||
|
|
sk->sk_state = MISDN_BOUND;
|
||
|
|
|
||
|
|
done:
|
||
|
|
release_sock(sk);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct proto_ops base_sock_ops = {
|
||
|
|
.family = PF_ISDN,
|
||
|
|
.owner = THIS_MODULE,
|
||
|
|
.release = base_sock_release,
|
||
|
|
.ioctl = base_sock_ioctl,
|
||
|
|
.bind = base_sock_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 int
|
||
|
|
base_sock_create(struct net *net, struct socket *sock, int protocol, int kern)
|
||
|
|
{
|
||
|
|
struct sock *sk;
|
||
|
|
|
||
|
|
if (sock->type != SOCK_RAW)
|
||
|
|
return -ESOCKTNOSUPPORT;
|
||
|
|
if (!capable(CAP_NET_RAW))
|
||
|
|
return -EPERM;
|
||
|
|
|
||
|
|
sk = sk_alloc(net, PF_ISDN, GFP_KERNEL, &mISDN_proto, kern);
|
||
|
|
if (!sk)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
sock_init_data(sock, sk);
|
||
|
|
sock->ops = &base_sock_ops;
|
||
|
|
sock->state = SS_UNCONNECTED;
|
||
|
|
sock_reset_flag(sk, SOCK_ZAPPED);
|
||
|
|
sk->sk_protocol = protocol;
|
||
|
|
sk->sk_state = MISDN_OPEN;
|
||
|
|
mISDN_sock_link(&base_sockets, sk);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
mISDN_sock_create(struct net *net, struct socket *sock, int proto, int kern)
|
||
|
|
{
|
||
|
|
int err = -EPROTONOSUPPORT;
|
||
|
|
|
||
|
|
switch (proto) {
|
||
|
|
case ISDN_P_BASE:
|
||
|
|
err = base_sock_create(net, sock, proto, kern);
|
||
|
|
break;
|
||
|
|
case ISDN_P_TE_S0:
|
||
|
|
case ISDN_P_NT_S0:
|
||
|
|
case ISDN_P_TE_E1:
|
||
|
|
case ISDN_P_NT_E1:
|
||
|
|
case ISDN_P_LAPD_TE:
|
||
|
|
case ISDN_P_LAPD_NT:
|
||
|
|
case ISDN_P_B_RAW:
|
||
|
|
case ISDN_P_B_HDLC:
|
||
|
|
case ISDN_P_B_X75SLP:
|
||
|
|
case ISDN_P_B_L2DTMF:
|
||
|
|
case ISDN_P_B_L2DSP:
|
||
|
|
case ISDN_P_B_L2DSPHDLC:
|
||
|
|
err = data_sock_create(net, sock, proto, kern);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct net_proto_family mISDN_sock_family_ops = {
|
||
|
|
.owner = THIS_MODULE,
|
||
|
|
.family = PF_ISDN,
|
||
|
|
.create = mISDN_sock_create,
|
||
|
|
};
|
||
|
|
|
||
|
|
int
|
||
|
|
misdn_sock_init(u_int *deb)
|
||
|
|
{
|
||
|
|
int err;
|
||
|
|
|
||
|
|
debug = deb;
|
||
|
|
err = sock_register(&mISDN_sock_family_ops);
|
||
|
|
if (err)
|
||
|
|
printk(KERN_ERR "%s: error(%d)\n", __func__, err);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
misdn_sock_cleanup(void)
|
||
|
|
{
|
||
|
|
sock_unregister(PF_ISDN);
|
||
|
|
}
|