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net/phonet/socket.c
16.3 KB
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// SPDX-License-Identifier: GPL-2.0-only |
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/* * File: socket.c * * Phonet sockets * * Copyright (C) 2008 Nokia Corporation. * |
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* Authors: Sakari Ailus <sakari.ailus@nokia.com> * Rémi Denis-Courmont |
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*/ |
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#include <linux/gfp.h> |
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#include <linux/kernel.h> #include <linux/net.h> |
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#include <linux/poll.h> |
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#include <linux/sched/signal.h> |
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#include <net/sock.h> #include <net/tcp_states.h> #include <linux/phonet.h> |
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#include <linux/export.h> |
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#include <net/phonet/phonet.h> |
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#include <net/phonet/pep.h> |
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#include <net/phonet/pn_dev.h> static int pn_socket_release(struct socket *sock) { struct sock *sk = sock->sk; if (sk) { sock->sk = NULL; sk->sk_prot->close(sk, 0); } return 0; } |
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#define PN_HASHSIZE 16 #define PN_HASHMASK (PN_HASHSIZE-1) |
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static struct { |
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struct hlist_head hlist[PN_HASHSIZE]; |
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struct mutex lock; |
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} pnsocks; void __init pn_sock_init(void) { |
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unsigned int i; |
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for (i = 0; i < PN_HASHSIZE; i++) INIT_HLIST_HEAD(pnsocks.hlist + i); |
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mutex_init(&pnsocks.lock); |
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} static struct hlist_head *pn_hash_list(u16 obj) { return pnsocks.hlist + (obj & PN_HASHMASK); } |
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/* * Find address based on socket address, match only certain fields. * Also grab sock if it was found. Remember to sock_put it later. */ |
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struct sock *pn_find_sock_by_sa(struct net *net, const struct sockaddr_pn *spn) |
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{ |
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struct sock *sknode; struct sock *rval = NULL; u16 obj = pn_sockaddr_get_object(spn); u8 res = spn->spn_resource; |
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struct hlist_head *hlist = pn_hash_list(obj); |
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|
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rcu_read_lock(); |
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sk_for_each_rcu(sknode, hlist) { |
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struct pn_sock *pn = pn_sk(sknode); BUG_ON(!pn->sobject); /* unbound socket */ |
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if (!net_eq(sock_net(sknode), net)) continue; |
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if (pn_port(obj)) { /* Look up socket by port */ if (pn_port(pn->sobject) != pn_port(obj)) continue; } else { /* If port is zero, look up by resource */ if (pn->resource != res) continue; } |
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if (pn_addr(pn->sobject) && pn_addr(pn->sobject) != pn_addr(obj)) |
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continue; rval = sknode; sock_hold(sknode); break; } |
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rcu_read_unlock(); |
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return rval; |
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} /* Deliver a broadcast packet (only in bottom-half) */ void pn_deliver_sock_broadcast(struct net *net, struct sk_buff *skb) { |
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struct hlist_head *hlist = pnsocks.hlist; |
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unsigned int h; |
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|
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rcu_read_lock(); |
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for (h = 0; h < PN_HASHSIZE; h++) { |
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struct sock *sknode; |
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|
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sk_for_each(sknode, hlist) { |
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struct sk_buff *clone; |
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|
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if (!net_eq(sock_net(sknode), net)) continue; if (!sock_flag(sknode, SOCK_BROADCAST)) continue; clone = skb_clone(skb, GFP_ATOMIC); if (clone) { sock_hold(sknode); sk_receive_skb(sknode, clone, 0); } |
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} |
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hlist++; |
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} |
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rcu_read_unlock(); |
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} |
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int pn_sock_hash(struct sock *sk) |
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{ |
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struct hlist_head *hlist = pn_hash_list(pn_sk(sk)->sobject); |
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mutex_lock(&pnsocks.lock); sk_add_node_rcu(sk, hlist); mutex_unlock(&pnsocks.lock); |
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return 0; |
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} EXPORT_SYMBOL(pn_sock_hash); void pn_sock_unhash(struct sock *sk) { |
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mutex_lock(&pnsocks.lock); sk_del_node_init_rcu(sk); mutex_unlock(&pnsocks.lock); |
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pn_sock_unbind_all_res(sk); |
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synchronize_rcu(); |
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} EXPORT_SYMBOL(pn_sock_unhash); |
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static DEFINE_MUTEX(port_mutex); |
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static int pn_socket_bind(struct socket *sock, struct sockaddr *addr, int len) { struct sock *sk = sock->sk; struct pn_sock *pn = pn_sk(sk); struct sockaddr_pn *spn = (struct sockaddr_pn *)addr; int err; u16 handle; u8 saddr; if (sk->sk_prot->bind) return sk->sk_prot->bind(sk, addr, len); if (len < sizeof(struct sockaddr_pn)) return -EINVAL; if (spn->spn_family != AF_PHONET) return -EAFNOSUPPORT; handle = pn_sockaddr_get_object((struct sockaddr_pn *)addr); saddr = pn_addr(handle); |
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if (saddr && phonet_address_lookup(sock_net(sk), saddr)) |
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return -EADDRNOTAVAIL; lock_sock(sk); if (sk->sk_state != TCP_CLOSE || pn_port(pn->sobject)) { err = -EINVAL; /* attempt to rebind */ goto out; } |
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WARN_ON(sk_hashed(sk)); mutex_lock(&port_mutex); |
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err = sk->sk_prot->get_port(sk, pn_port(handle)); if (err) |
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goto out_port; |
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/* get_port() sets the port, bind() sets the address if applicable */ pn->sobject = pn_object(saddr, pn_port(pn->sobject)); pn->resource = spn->spn_resource; /* Enable RX on the socket */ |
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err = sk->sk_prot->hash(sk); |
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out_port: mutex_unlock(&port_mutex); |
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out: release_sock(sk); return err; } static int pn_socket_autobind(struct socket *sock) { struct sockaddr_pn sa; int err; memset(&sa, 0, sizeof(sa)); sa.spn_family = AF_PHONET; err = pn_socket_bind(sock, (struct sockaddr *)&sa, sizeof(struct sockaddr_pn)); if (err != -EINVAL) return err; BUG_ON(!pn_port(pn_sk(sock->sk)->sobject)); return 0; /* socket was already bound */ } |
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static int pn_socket_connect(struct socket *sock, struct sockaddr *addr, int len, int flags) { struct sock *sk = sock->sk; |
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struct pn_sock *pn = pn_sk(sk); |
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struct sockaddr_pn *spn = (struct sockaddr_pn *)addr; |
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struct task_struct *tsk = current; long timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
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int err; |
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if (pn_socket_autobind(sock)) return -ENOBUFS; |
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if (len < sizeof(struct sockaddr_pn)) return -EINVAL; if (spn->spn_family != AF_PHONET) return -EAFNOSUPPORT; lock_sock(sk); switch (sock->state) { case SS_UNCONNECTED: |
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if (sk->sk_state != TCP_CLOSE) { |
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err = -EISCONN; goto out; |
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} break; |
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case SS_CONNECTING: err = -EALREADY; goto out; default: err = -EISCONN; goto out; |
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} |
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|
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pn->dobject = pn_sockaddr_get_object(spn); pn->resource = pn_sockaddr_get_resource(spn); |
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sock->state = SS_CONNECTING; |
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|
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err = sk->sk_prot->connect(sk, addr, len); |
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if (err) { |
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sock->state = SS_UNCONNECTED; |
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pn->dobject = 0; |
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goto out; } |
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while (sk->sk_state == TCP_SYN_SENT) { DEFINE_WAIT(wait); |
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|
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if (!timeo) { err = -EINPROGRESS; goto out; } if (signal_pending(tsk)) { err = sock_intr_errno(timeo); goto out; } |
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|
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prepare_to_wait_exclusive(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); release_sock(sk); timeo = schedule_timeout(timeo); lock_sock(sk); finish_wait(sk_sleep(sk), &wait); |
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} |
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|
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if ((1 << sk->sk_state) & (TCPF_SYN_RECV|TCPF_ESTABLISHED)) err = 0; else if (sk->sk_state == TCP_CLOSE_WAIT) err = -ECONNRESET; else err = -ECONNREFUSED; sock->state = err ? SS_UNCONNECTED : SS_CONNECTED; |
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out: release_sock(sk); return err; } |
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|
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static int pn_socket_accept(struct socket *sock, struct socket *newsock, |
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int flags, bool kern) |
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{ struct sock *sk = sock->sk; struct sock *newsk; int err; |
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if (unlikely(sk->sk_state != TCP_LISTEN)) return -EINVAL; |
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newsk = sk->sk_prot->accept(sk, flags, &err, kern); |
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if (!newsk) return err; lock_sock(newsk); sock_graft(newsk, newsock); newsock->state = SS_CONNECTED; release_sock(newsk); return 0; } |
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static int pn_socket_getname(struct socket *sock, struct sockaddr *addr, |
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int peer) |
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{ struct sock *sk = sock->sk; struct pn_sock *pn = pn_sk(sk); memset(addr, 0, sizeof(struct sockaddr_pn)); addr->sa_family = AF_PHONET; if (!peer) /* Race with bind() here is userland's problem. */ pn_sockaddr_set_object((struct sockaddr_pn *)addr, pn->sobject); |
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return sizeof(struct sockaddr_pn); |
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} |
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static __poll_t pn_socket_poll(struct file *file, struct socket *sock, poll_table *wait) |
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{ struct sock *sk = sock->sk; struct pep_sock *pn = pep_sk(sk); |
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__poll_t mask = 0; |
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|
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poll_wait(file, sk_sleep(sk), wait); |
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if (sk->sk_state == TCP_CLOSE) |
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return EPOLLERR; |
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if (!skb_queue_empty_lockless(&sk->sk_receive_queue)) |
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mask |= EPOLLIN | EPOLLRDNORM; |
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if (!skb_queue_empty_lockless(&pn->ctrlreq_queue)) |
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mask |= EPOLLPRI; |
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if (!mask && sk->sk_state == TCP_CLOSE_WAIT) |
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return EPOLLHUP; |
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|
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if (sk->sk_state == TCP_ESTABLISHED && |
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refcount_read(&sk->sk_wmem_alloc) < sk->sk_sndbuf && |
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atomic_read(&pn->tx_credits)) |
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mask |= EPOLLOUT | EPOLLWRNORM | EPOLLWRBAND; |
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return mask; } |
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static int pn_socket_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) { struct sock *sk = sock->sk; struct pn_sock *pn = pn_sk(sk); if (cmd == SIOCPNGETOBJECT) { struct net_device *dev; u16 handle; u8 saddr; if (get_user(handle, (__u16 __user *)arg)) return -EFAULT; lock_sock(sk); if (sk->sk_bound_dev_if) dev = dev_get_by_index(sock_net(sk), sk->sk_bound_dev_if); else dev = phonet_device_get(sock_net(sk)); if (dev && (dev->flags & IFF_UP)) saddr = phonet_address_get(dev, pn_addr(handle)); else saddr = PN_NO_ADDR; release_sock(sk); if (dev) dev_put(dev); if (saddr == PN_NO_ADDR) return -EHOSTUNREACH; handle = pn_object(saddr, pn_port(pn->sobject)); return put_user(handle, (__u16 __user *)arg); } return sk->sk_prot->ioctl(sk, cmd, arg); } |
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static int pn_socket_listen(struct socket *sock, int backlog) { struct sock *sk = sock->sk; int err = 0; |
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if (pn_socket_autobind(sock)) return -ENOBUFS; lock_sock(sk); |
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if (sock->state != SS_UNCONNECTED) { |
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err = -EINVAL; goto out; } |
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if (sk->sk_state != TCP_LISTEN) { sk->sk_state = TCP_LISTEN; sk->sk_ack_backlog = 0; } |
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sk->sk_max_ack_backlog = backlog; out: release_sock(sk); return err; } |
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static int pn_socket_sendmsg(struct socket *sock, struct msghdr *m, size_t total_len) |
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{ struct sock *sk = sock->sk; if (pn_socket_autobind(sock)) return -EAGAIN; |
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return sk->sk_prot->sendmsg(sk, m, total_len); |
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} const struct proto_ops phonet_dgram_ops = { .family = AF_PHONET, .owner = THIS_MODULE, .release = pn_socket_release, .bind = pn_socket_bind, .connect = sock_no_connect, .socketpair = sock_no_socketpair, .accept = sock_no_accept, .getname = pn_socket_getname, |
a11e1d432 Revert changes to... |
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.poll = datagram_poll, |
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.ioctl = pn_socket_ioctl, .listen = sock_no_listen, .shutdown = sock_no_shutdown, |
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.sendmsg = pn_socket_sendmsg, .recvmsg = sock_common_recvmsg, .mmap = sock_no_mmap, .sendpage = sock_no_sendpage, }; |
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const struct proto_ops phonet_stream_ops = { .family = AF_PHONET, .owner = THIS_MODULE, .release = pn_socket_release, .bind = pn_socket_bind, |
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.connect = pn_socket_connect, |
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.socketpair = sock_no_socketpair, .accept = pn_socket_accept, .getname = pn_socket_getname, |
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.poll = pn_socket_poll, |
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.ioctl = pn_socket_ioctl, .listen = pn_socket_listen, .shutdown = sock_no_shutdown, |
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.setsockopt = sock_common_setsockopt, .getsockopt = sock_common_getsockopt, |
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.sendmsg = pn_socket_sendmsg, .recvmsg = sock_common_recvmsg, .mmap = sock_no_mmap, .sendpage = sock_no_sendpage, }; EXPORT_SYMBOL(phonet_stream_ops); |
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/* allocate port for a socket */ int pn_sock_get_port(struct sock *sk, unsigned short sport) { static int port_cur; |
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struct net *net = sock_net(sk); |
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struct pn_sock *pn = pn_sk(sk); struct sockaddr_pn try_sa; struct sock *tmpsk; memset(&try_sa, 0, sizeof(struct sockaddr_pn)); try_sa.spn_family = AF_PHONET; |
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WARN_ON(!mutex_is_locked(&port_mutex)); |
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if (!sport) { /* search free port */ |
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int port, pmin, pmax; |
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|
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phonet_get_local_port_range(&pmin, &pmax); |
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for (port = pmin; port <= pmax; port++) { port_cur++; if (port_cur < pmin || port_cur > pmax) port_cur = pmin; pn_sockaddr_set_port(&try_sa, port_cur); |
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tmpsk = pn_find_sock_by_sa(net, &try_sa); |
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if (tmpsk == NULL) { sport = port_cur; goto found; } else sock_put(tmpsk); } } else { /* try to find specific port */ pn_sockaddr_set_port(&try_sa, sport); |
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tmpsk = pn_find_sock_by_sa(net, &try_sa); |
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if (tmpsk == NULL) /* No sock there! We can use that port... */ goto found; else sock_put(tmpsk); } |
ba113a94b Phonet: common so... |
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/* the port must be in use already */ return -EADDRINUSE; found: |
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pn->sobject = pn_object(pn_addr(pn->sobject), sport); return 0; } EXPORT_SYMBOL(pn_sock_get_port); |
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|
ae6e2aef6 phonet: fix build... |
492 |
#ifdef CONFIG_PROC_FS |
c1dc13e9d Phonet: sockets l... |
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static struct sock *pn_sock_get_idx(struct seq_file *seq, loff_t pos) { struct net *net = seq_file_net(seq); |
6b0d07ba1 Phonet: put socke... |
496 |
struct hlist_head *hlist = pnsocks.hlist; |
c1dc13e9d Phonet: sockets l... |
497 |
struct sock *sknode; |
95c961747 net: cleanup unsi... |
498 |
unsigned int h; |
c1dc13e9d Phonet: sockets l... |
499 |
|
6b0d07ba1 Phonet: put socke... |
500 |
for (h = 0; h < PN_HASHSIZE; h++) { |
b67bfe0d4 hlist: drop the n... |
501 |
sk_for_each_rcu(sknode, hlist) { |
6b0d07ba1 Phonet: put socke... |
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if (!net_eq(net, sock_net(sknode))) continue; if (!pos) return sknode; pos--; } hlist++; |
c1dc13e9d Phonet: sockets l... |
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} return NULL; } static struct sock *pn_sock_get_next(struct seq_file *seq, struct sock *sk) { struct net *net = seq_file_net(seq); do sk = sk_next(sk); while (sk && !net_eq(net, sock_net(sk))); return sk; } static void *pn_sock_seq_start(struct seq_file *seq, loff_t *pos) |
44f4d5a27 Phonet: convert b... |
525 |
__acquires(rcu) |
c1dc13e9d Phonet: sockets l... |
526 |
{ |
44f4d5a27 Phonet: convert b... |
527 |
rcu_read_lock(); |
c1dc13e9d Phonet: sockets l... |
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return *pos ? pn_sock_get_idx(seq, *pos - 1) : SEQ_START_TOKEN; } static void *pn_sock_seq_next(struct seq_file *seq, void *v, loff_t *pos) { struct sock *sk; if (v == SEQ_START_TOKEN) sk = pn_sock_get_idx(seq, 0); else sk = pn_sock_get_next(seq, v); (*pos)++; return sk; } static void pn_sock_seq_stop(struct seq_file *seq, void *v) |
44f4d5a27 Phonet: convert b... |
544 |
__releases(rcu) |
c1dc13e9d Phonet: sockets l... |
545 |
{ |
44f4d5a27 Phonet: convert b... |
546 |
rcu_read_unlock(); |
c1dc13e9d Phonet: sockets l... |
547 548 549 550 |
} static int pn_sock_seq_show(struct seq_file *seq, void *v) { |
652586df9 seq_file: remove ... |
551 |
seq_setwidth(seq, 127); |
c1dc13e9d Phonet: sockets l... |
552 |
if (v == SEQ_START_TOKEN) |
652586df9 seq_file: remove ... |
553 554 |
seq_puts(seq, "pt loc rem rs st tx_queue rx_queue " " uid inode ref pointer drops"); |
c1dc13e9d Phonet: sockets l... |
555 556 557 558 559 |
else { struct sock *sk = v; struct pn_sock *pn = pn_sk(sk); seq_printf(seq, "%2d %04X:%04X:%02X %02X %08X:%08X %5d %lu " |
ea9a03791 net: Treat sock->... |
560 |
"%d %pK %u", |
a8059512b Phonet: implement... |
561 562 |
sk->sk_protocol, pn->sobject, pn->dobject, pn->resource, sk->sk_state, |
c1dc13e9d Phonet: sockets l... |
563 |
sk_wmem_alloc_get(sk), sk_rmem_alloc_get(sk), |
a7cb5a49b userns: Print out... |
564 565 |
from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)), sock_i_ino(sk), |
41c6d650f net: convert sock... |
566 |
refcount_read(&sk->sk_refcnt), sk, |
652586df9 seq_file: remove ... |
567 |
atomic_read(&sk->sk_drops)); |
c1dc13e9d Phonet: sockets l... |
568 |
} |
652586df9 seq_file: remove ... |
569 570 |
seq_pad(seq, ' '); |
c1dc13e9d Phonet: sockets l... |
571 572 |
return 0; } |
c35063722 proc: introduce p... |
573 |
const struct seq_operations pn_sock_seq_ops = { |
c1dc13e9d Phonet: sockets l... |
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.start = pn_sock_seq_start, .next = pn_sock_seq_next, .stop = pn_sock_seq_stop, .show = pn_sock_seq_show, }; |
ae6e2aef6 phonet: fix build... |
579 |
#endif |
4e3d16ce5 Phonet: resource ... |
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static struct { struct sock *sk[256]; } pnres; /* * Find and hold socket based on resource. */ struct sock *pn_find_sock_by_res(struct net *net, u8 res) { struct sock *sk; if (!net_eq(net, &init_net)) return NULL; rcu_read_lock(); sk = rcu_dereference(pnres.sk[res]); if (sk) sock_hold(sk); rcu_read_unlock(); return sk; } static DEFINE_MUTEX(resource_mutex); int pn_sock_bind_res(struct sock *sk, u8 res) { int ret = -EADDRINUSE; if (!net_eq(sock_net(sk), &init_net)) return -ENOIOCTLCMD; if (!capable(CAP_SYS_ADMIN)) return -EPERM; if (pn_socket_autobind(sk->sk_socket)) return -EAGAIN; mutex_lock(&resource_mutex); if (pnres.sk[res] == NULL) { sock_hold(sk); |
cf778b00e net: reintroduce ... |
619 |
rcu_assign_pointer(pnres.sk[res], sk); |
4e3d16ce5 Phonet: resource ... |
620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 |
ret = 0; } mutex_unlock(&resource_mutex); return ret; } int pn_sock_unbind_res(struct sock *sk, u8 res) { int ret = -ENOENT; if (!capable(CAP_SYS_ADMIN)) return -EPERM; mutex_lock(&resource_mutex); if (pnres.sk[res] == sk) { |
a9b3cd7f3 rcu: convert uses... |
635 |
RCU_INIT_POINTER(pnres.sk[res], NULL); |
4e3d16ce5 Phonet: resource ... |
636 637 638 639 640 641 642 643 644 645 646 647 648 |
ret = 0; } mutex_unlock(&resource_mutex); if (ret == 0) { synchronize_rcu(); sock_put(sk); } return ret; } void pn_sock_unbind_all_res(struct sock *sk) { |
95c961747 net: cleanup unsi... |
649 |
unsigned int res, match = 0; |
4e3d16ce5 Phonet: resource ... |
650 651 652 653 |
mutex_lock(&resource_mutex); for (res = 0; res < 256; res++) { if (pnres.sk[res] == sk) { |
a9b3cd7f3 rcu: convert uses... |
654 |
RCU_INIT_POINTER(pnres.sk[res], NULL); |
4e3d16ce5 Phonet: resource ... |
655 656 657 658 |
match++; } } mutex_unlock(&resource_mutex); |
4e3d16ce5 Phonet: resource ... |
659 |
while (match > 0) { |
44f4d5a27 Phonet: convert b... |
660 |
__sock_put(sk); |
4e3d16ce5 Phonet: resource ... |
661 662 |
match--; } |
44f4d5a27 Phonet: convert b... |
663 |
/* Caller is responsible for RCU sync before final sock_put() */ |
4e3d16ce5 Phonet: resource ... |
664 |
} |
507215f8d Phonet: list subs... |
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#ifdef CONFIG_PROC_FS static struct sock **pn_res_get_idx(struct seq_file *seq, loff_t pos) { struct net *net = seq_file_net(seq); |
95c961747 net: cleanup unsi... |
670 |
unsigned int i; |
507215f8d Phonet: list subs... |
671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 |
if (!net_eq(net, &init_net)) return NULL; for (i = 0; i < 256; i++) { if (pnres.sk[i] == NULL) continue; if (!pos) return pnres.sk + i; pos--; } return NULL; } static struct sock **pn_res_get_next(struct seq_file *seq, struct sock **sk) { struct net *net = seq_file_net(seq); |
95c961747 net: cleanup unsi... |
688 |
unsigned int i; |
507215f8d Phonet: list subs... |
689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 |
BUG_ON(!net_eq(net, &init_net)); for (i = (sk - pnres.sk) + 1; i < 256; i++) if (pnres.sk[i]) return pnres.sk + i; return NULL; } static void *pn_res_seq_start(struct seq_file *seq, loff_t *pos) __acquires(resource_mutex) { mutex_lock(&resource_mutex); return *pos ? pn_res_get_idx(seq, *pos - 1) : SEQ_START_TOKEN; } static void *pn_res_seq_next(struct seq_file *seq, void *v, loff_t *pos) { struct sock **sk; if (v == SEQ_START_TOKEN) sk = pn_res_get_idx(seq, 0); else sk = pn_res_get_next(seq, v); (*pos)++; return sk; } static void pn_res_seq_stop(struct seq_file *seq, void *v) __releases(resource_mutex) { mutex_unlock(&resource_mutex); } static int pn_res_seq_show(struct seq_file *seq, void *v) { |
652586df9 seq_file: remove ... |
725 |
seq_setwidth(seq, 63); |
507215f8d Phonet: list subs... |
726 |
if (v == SEQ_START_TOKEN) |
652586df9 seq_file: remove ... |
727 |
seq_puts(seq, "rs uid inode"); |
507215f8d Phonet: list subs... |
728 729 730 |
else { struct sock **psk = v; struct sock *sk = *psk; |
652586df9 seq_file: remove ... |
731 |
seq_printf(seq, "%02X %5u %lu", |
a7cb5a49b userns: Print out... |
732 733 |
(int) (psk - pnres.sk), from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)), |
652586df9 seq_file: remove ... |
734 |
sock_i_ino(sk)); |
507215f8d Phonet: list subs... |
735 |
} |
652586df9 seq_file: remove ... |
736 737 |
seq_pad(seq, ' '); |
507215f8d Phonet: list subs... |
738 739 |
return 0; } |
c35063722 proc: introduce p... |
740 |
const struct seq_operations pn_res_seq_ops = { |
507215f8d Phonet: list subs... |
741 742 743 744 745 |
.start = pn_res_seq_start, .next = pn_res_seq_next, .stop = pn_res_seq_stop, .show = pn_res_seq_show, }; |
507215f8d Phonet: list subs... |
746 |
#endif |