Release 4.11 net/rose/af_rose.c

/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
 * Copyright (C) Alan Cox GW4PTS (alan@lxorguk.ukuu.org.uk)
 * Copyright (C) Terry Dawson VK2KTJ (terry@animats.net)
 * Copyright (C) Tomi Manninen OH2BNS (oh2bns@sral.fi)
 */

#include <linux/capability.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/socket.h>
#include <linux/in.h>
#include <linux/slab.h>
#include <linux/kernel.h>
#include <linux/sched/signal.h>
#include <linux/spinlock.h>
#include <linux/timer.h>
#include <linux/string.h>
#include <linux/sockios.h>
#include <linux/net.h>
#include <linux/stat.h>
#include <net/net_namespace.h>
#include <net/ax25.h>
#include <linux/inet.h>
#include <linux/netdevice.h>
#include <linux/if_arp.h>
#include <linux/skbuff.h>
#include <net/sock.h>
#include <linux/uaccess.h>
#include <linux/fcntl.h>
#include <linux/termios.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/notifier.h>
#include <net/rose.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <net/tcp_states.h>
#include <net/ip.h>
#include <net/arp.h>


static int rose_ndevs = 10;


int sysctl_rose_restart_request_timeout = ROSE_DEFAULT_T0;

int sysctl_rose_call_request_timeout    = ROSE_DEFAULT_T1;

int sysctl_rose_reset_request_timeout   = ROSE_DEFAULT_T2;

int sysctl_rose_clear_request_timeout   = ROSE_DEFAULT_T3;

int sysctl_rose_no_activity_timeout     = ROSE_DEFAULT_IDLE;

int sysctl_rose_ack_hold_back_timeout   = ROSE_DEFAULT_HB;

int sysctl_rose_routing_control         = ROSE_DEFAULT_ROUTING;

int sysctl_rose_link_fail_timeout       = ROSE_DEFAULT_FAIL_TIMEOUT;

int sysctl_rose_maximum_vcs             = ROSE_DEFAULT_MAXVC;

int sysctl_rose_window_size             = ROSE_DEFAULT_WINDOW_SIZE;

static HLIST_HEAD(rose_list);
static DEFINE_SPINLOCK(rose_list_lock);


static const struct proto_ops rose_proto_ops;


ax25_address rose_callsign;

/*
 * ROSE network devices are virtual network devices encapsulating ROSE
 * frames into AX.25 which will be sent through an AX.25 device, so form a
 * special "super class" of normal net devices; split their locks off into a
 * separate class since they always nest.
 */

static struct lock_class_key rose_netdev_xmit_lock_key;

static struct lock_class_key rose_netdev_addr_lock_key;



static void rose_set_lockdep_one(struct net_device *dev,
				 struct netdev_queue *txq,
				 void *_unused)
{
	lockdep_set_class(&txq->_xmit_lock, &rose_netdev_xmit_lock_key);
}

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David S. Miller
31
100.00%
2
100.00%
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31
100.00%
2
100.00%



static void rose_set_lockdep_key(struct net_device *dev)
{
	lockdep_set_class(&dev->addr_list_lock, &rose_netdev_addr_lock_key);
	netdev_for_each_tx_queue(dev, rose_set_lockdep_one, NULL);
}

Contributors
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CommitProp
David S. Miller
31
100.00%
3
100.00%
Total
31
100.00%
3
100.00%

/*
 *      Convert a ROSE address into text.
 */


char *rose2asc(char *buf, const rose_address *addr)
{
	if (addr->rose_addr[0] == 0x00 && addr->rose_addr[1] == 0x00 &&
	    addr->rose_addr[2] == 0x00 && addr->rose_addr[3] == 0x00 &&
	    addr->rose_addr[4] == 0x00) {
		strcpy(buf, "*");
	} else {
		sprintf(buf, "%02X%02X%02X%02X%02X", addr->rose_addr[0] & 0xFF,
						addr->rose_addr[1] & 0xFF,
						addr->rose_addr[2] & 0xFF,
						addr->rose_addr[3] & 0xFF,
						addr->rose_addr[4] & 0xFF);
	}

	return buf;
}

Contributors
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Linus Torvalds (pre-git)
121
93.80%
1
33.33%
Ralf Bächle
7
5.43%
1
33.33%
Stephen Hemminger
1
0.78%
1
33.33%
Total
129
100.00%
3
100.00%

/*
 *      Compare two ROSE addresses, 0 == equal.
 */


int rosecmp(rose_address *addr1, rose_address *addr2)
{
	int i;

	for (i = 0; i < 5; i++)
		if (addr1->rose_addr[i] != addr2->rose_addr[i])
			return 1;

	return 0;
}

Contributors
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CommitProp
Linus Torvalds (pre-git)
51
100.00%
1
100.00%
Total
51
100.00%
1
100.00%

/*
 *      Compare two ROSE addresses for only mask digits, 0 == equal.
 */


int rosecmpm(rose_address *addr1, rose_address *addr2, unsigned short mask)
{
	unsigned int i, j;

	if (mask > 10)
		return 1;

	for (i = 0; i < mask; i++) {
		j = i / 2;

		if ((i % 2) != 0) {
			if ((addr1->rose_addr[j] & 0x0F) != (addr2->rose_addr[j] & 0x0F))
				return 1;
		} else {
			if ((addr1->rose_addr[j] & 0xF0) != (addr2->rose_addr[j] & 0xF0))
				return 1;
		}
	}

	return 0;
}

Contributors
Person
Tokens
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Commits
CommitProp
Linus Torvalds (pre-git)
124
99.20%
2
66.67%
Eric Dumazet
1
0.80%
1
33.33%
Total
125
100.00%
3
100.00%

/*
 *      Socket removal during an interrupt is now safe.
 */


static void rose_remove_socket(struct sock *sk)
{
	spin_lock_bh(&rose_list_lock);
	sk_del_node_init(sk);
	spin_unlock_bh(&rose_list_lock);
}

Contributors
Person
Tokens
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CommitProp
Linus Torvalds (pre-git)
21
75.00%
1
25.00%
Ralf Bächle
6
21.43%
2
50.00%
Arnaldo Carvalho de Melo
1
3.57%
1
25.00%
Total
28
100.00%
4
100.00%

/*
 *      Kill all bound sockets on a broken link layer connection to a
 *      particular neighbour.
 */


void rose_kill_by_neigh(struct rose_neigh *neigh)
{
	struct sock *s;

	spin_lock_bh(&rose_list_lock);
	sk_for_each(s, &rose_list) {
		struct rose_sock *rose = rose_sk(s);

		if (rose->neighbour == neigh) {
			rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
			rose->neighbour->use--;
			rose->neighbour = NULL;
		}
	}
	spin_unlock_bh(&rose_list_lock);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
51
64.56%
2
28.57%
Ralf Bächle
14
17.72%
3
42.86%
David S. Miller
8
10.13%
1
14.29%
Arnaldo Carvalho de Melo
6
7.59%
1
14.29%
Total
79
100.00%
7
100.00%

/*
 *      Kill all bound sockets on a dropped device.
 */


static void rose_kill_by_device(struct net_device *dev)
{
	struct sock *s;

	spin_lock_bh(&rose_list_lock);
	sk_for_each(s, &rose_list) {
		struct rose_sock *rose = rose_sk(s);

		if (rose->device == dev) {
			rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
			if (rose->neighbour)
				rose->neighbour->use--;
			rose->device = NULL;
		}
	}
	spin_unlock_bh(&rose_list_lock);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
52
60.47%
3
33.33%
Ralf Bächle
20
23.26%
4
44.44%
David S. Miller
8
9.30%
1
11.11%
Arnaldo Carvalho de Melo
6
6.98%
1
11.11%
Total
86
100.00%
9
100.00%

/*
 *      Handle device status changes.
 */


static int rose_device_event(struct notifier_block *this,
			     unsigned long event, void *ptr)
{
	struct net_device *dev = netdev_notifier_info_to_dev(ptr);

	if (!net_eq(dev_net(dev), &init_net))
		return NOTIFY_DONE;

	if (event != NETDEV_DOWN)
		return NOTIFY_DONE;

	switch (dev->type) {
	case ARPHRD_ROSE:
		rose_kill_by_device(dev);
		break;
	case ARPHRD_AX25:
		rose_link_device_down(dev);
		rose_rt_device_down(dev);
		break;
	}

	return NOTIFY_DONE;
}

Contributors
Person
Tokens
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Commits
CommitProp
Linus Torvalds (pre-git)
69
77.53%
3
42.86%
Eric W. Biedermann
9
10.11%
1
14.29%
Hideaki Yoshifuji / 吉藤英明
8
8.99%
2
28.57%
Jiri Pirko
3
3.37%
1
14.29%
Total
89
100.00%
7
100.00%

/*
 *      Add a socket to the bound sockets list.
 */


static void rose_insert_socket(struct sock *sk)
{

	spin_lock_bh(&rose_list_lock);
	sk_add_node(sk, &rose_list);
	spin_unlock_bh(&rose_list_lock);
}

Contributors
Person
Tokens
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Commits
CommitProp
Linus Torvalds (pre-git)
20
64.52%
1
25.00%
Ralf Bächle
6
19.35%
2
50.00%
Arnaldo Carvalho de Melo
5
16.13%
1
25.00%
Total
31
100.00%
4
100.00%

/*
 *      Find a socket that wants to accept the Call Request we just
 *      received.
 */


static struct sock *rose_find_listener(rose_address *addr, ax25_address *call)
{
	struct sock *s;

	spin_lock_bh(&rose_list_lock);
	sk_for_each(s, &rose_list) {
		struct rose_sock *rose = rose_sk(s);

		if (!rosecmp(&rose->source_addr, addr) &&
		    !ax25cmp(&rose->source_call, call) &&
		    !rose->source_ndigis && s->sk_state == TCP_LISTEN)
			goto found;
	}

	sk_for_each(s, &rose_list) {
		struct rose_sock *rose = rose_sk(s);

		if (!rosecmp(&rose->source_addr, addr) &&
		    !ax25cmp(&rose->source_call, &null_ax25_address) &&
		    s->sk_state == TCP_LISTEN)
			goto found;
	}
	s = NULL;
found:
	spin_unlock_bh(&rose_list_lock);
	return s;
}

Contributors
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Tokens
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CommitProp
Linus Torvalds (pre-git)
93
62.00%
2
25.00%
Arnaldo Carvalho de Melo
26
17.33%
2
25.00%
David S. Miller
21
14.00%
1
12.50%
Ralf Bächle
10
6.67%
3
37.50%
Total
150
100.00%
8
100.00%

/*
 *      Find a connected ROSE socket given my LCI and device.
 */


struct sock *rose_find_socket(unsigned int lci, struct rose_neigh *neigh)
{
	struct sock *s;

	spin_lock_bh(&rose_list_lock);
	sk_for_each(s, &rose_list) {
		struct rose_sock *rose = rose_sk(s);

		if (rose->lci == lci && rose->neighbour == neigh)
			goto found;
	}
	s = NULL;
found:
	spin_unlock_bh(&rose_list_lock);
	return s;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
45
58.44%
2
28.57%
Arnaldo Carvalho de Melo
16
20.78%
1
14.29%
David S. Miller
8
10.39%
1
14.29%
Ralf Bächle
8
10.39%
3
42.86%
Total
77
100.00%
7
100.00%

/*
 *      Find a unique LCI for a given device.
 */


unsigned int rose_new_lci(struct rose_neigh *neigh)
{
	int lci;

	if (neigh->dce_mode) {
		for (lci = 1; lci <= sysctl_rose_maximum_vcs; lci++)
			if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL)
				return lci;
	} else {
		for (lci = sysctl_rose_maximum_vcs; lci > 0; lci--)
			if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL)
				return lci;
	}

	return 0;
}

Contributors
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CommitProp
Linus Torvalds (pre-git)
100
100.00%
2
100.00%
Total
100
100.00%
2
100.00%

/*
 *      Deferred destroy.
 */
void rose_destroy_socket(struct sock *);

/*
 *      Handler for deferred kills.
 */


static void rose_destroy_timer(unsigned long data)
{
	rose_destroy_socket((struct sock *)data);
}

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Linus Torvalds (pre-git)
20
100.00%
1
100.00%
Total
20
100.00%
1
100.00%

/*
 *      This is called from user mode and the timers. Thus it protects itself
 *      against interrupt users but doesn't worry about being called during
 *      work.  Once it is removed from the queue no interrupt or bottom half
 *      will touch it and we are (fairly 8-) ) safe.
 */


void rose_destroy_socket(struct sock *sk)
{
	struct sk_buff *skb;

	rose_remove_socket(sk);
	rose_stop_heartbeat(sk);
	rose_stop_idletimer(sk);
	rose_stop_timer(sk);

	rose_clear_queues(sk);		/* Flush the queues */

	while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
		if (skb->sk != sk) {	/* A pending connection */
			/* Queue the unaccepted socket for death */
			sock_set_flag(skb->sk, SOCK_DEAD);
			rose_start_heartbeat(skb->sk);
			rose_sk(skb->sk)->state = ROSE_STATE_0;
		}

		kfree_skb(skb);
	}

	if (sk_has_allocations(sk)) {
		/* Defer: outstanding buffers */
		setup_timer(&sk->sk_timer, rose_destroy_timer,
				(unsigned long)sk);
		sk->sk_timer.expires  = jiffies + 10 * HZ;
		add_timer(&sk->sk_timer);
	} else
		sock_put(sk);
}

Contributors
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Tokens
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CommitProp
Linus Torvalds (pre-git)
129
83.23%
3
27.27%
Pavel Emelyanov
9
5.81%
1
9.09%
Arnaldo Carvalho de Melo
8
5.16%
2
18.18%
David S. Miller
3
1.94%
1
9.09%
Ralf Bächle
2
1.29%
1
9.09%
James Morris
2
1.29%
1
9.09%
Eric Dumazet
1
0.65%
1
9.09%
Stephen Hemminger
1
0.65%
1
9.09%
Total
155
100.00%
11
100.00%

/*
 *      Handling for system calls applied via the various interfaces to a
 *      ROSE socket object.
 */



static int rose_setsockopt(struct socket *sock, int level, int optname,
	char __user *optval, unsigned int optlen)
{
	struct sock *sk = sock->sk;
	struct rose_sock *rose = rose_sk(sk);
	int opt;

	if (level != SOL_ROSE)
		return -ENOPROTOOPT;

	if (optlen < sizeof(int))
		return -EINVAL;

	if (get_user(opt, (int __user *)optval))
		return -EFAULT;

	switch (optname) {
	case ROSE_DEFER:
		rose->defer = opt ? 1 : 0;
		return 0;

	case ROSE_T1:
		if (opt < 1)
			return -EINVAL;
		rose->t1 = opt * HZ;
		return 0;

	case ROSE_T2:
		if (opt < 1)
			return -EINVAL;
		rose->t2 = opt * HZ;
		return 0;

	case ROSE_T3:
		if (opt < 1)
			return -EINVAL;
		rose->t3 = opt * HZ;
		return 0;

	case ROSE_HOLDBACK:
		if (opt < 1)
			return -EINVAL;
		rose->hb = opt * HZ;
		return 0;

	case ROSE_IDLE:
		if (opt < 0)
			return -EINVAL;
		rose->idle = opt * 60 * HZ;
		return 0;

	case ROSE_QBITINCL:
		rose->qbitincl = opt ? 1 : 0;
		return 0;

	default:
		return -ENOPROTOOPT;
	}
}

Contributors
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CommitProp
Linus Torvalds (pre-git)
241
94.88%
4
50.00%
David S. Miller
9
3.54%
2
25.00%
Ralf Bächle
2
0.79%
1
12.50%
Al Viro
2
0.79%
1
12.50%
Total
254
100.00%
8
100.00%



static int rose_getsockopt(struct socket *sock, int level, int optname,
	char __user *optval, int __user *optlen)
{
	struct sock *sk = sock->sk;
	struct rose_sock *rose = rose_sk(sk);
	int val = 0;
	int len;

	if (level != SOL_ROSE)
		return -ENOPROTOOPT;

	if (get_user(len, optlen))
		return -EFAULT;

	if (len < 0)
		return -EINVAL;

	switch (optname) {
	case ROSE_DEFER:
		val = rose->defer;
		break;

	case ROSE_T1:
		val = rose->t1 / HZ;
		break;

	case ROSE_T2:
		val = rose->t2 / HZ;
		break;

	case ROSE_T3:
		val = rose->t3 / HZ;
		break;

	case ROSE_HOLDBACK:
		val = rose->hb / HZ;
		break;

	case ROSE_IDLE:
		val = rose->idle / (60 * HZ);
		break;

	case ROSE_QBITINCL:
		val = rose->qbitincl;
		break;

	default:
		return -ENOPROTOOPT;
	}

	len = min_t(unsigned int, len, sizeof(int));

	if (put_user(len, optlen))
		return -EFAULT;

	return copy_to_user(optval, &val, len) ? -EFAULT : 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
195
87.84%
7
53.85%
Linus Torvalds
15
6.76%
3
23.08%
David S. Miller
8
3.60%
1
7.69%
Ralf Bächle
2
0.90%
1
7.69%
Al Viro
2
0.90%
1
7.69%
Total
222
100.00%
13
100.00%



static int rose_listen(struct socket *sock, int backlog)
{
	struct sock *sk = sock->sk;

	if (sk->sk_state != TCP_LISTEN) {
		struct rose_sock *rose = rose_sk(sk);

		rose->dest_ndigis = 0;
		memset(&rose->dest_addr, 0, ROSE_ADDR_LEN);
		memset(&rose->dest_call, 0, AX25_ADDR_LEN);
		memset(rose->dest_digis, 0, AX25_ADDR_LEN * ROSE_MAX_DIGIS);
		sk->sk_max_ack_backlog = backlog;
		sk->sk_state           = TCP_LISTEN;
		return 0;
	}

	return -EOPNOTSUPP;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
90
85.71%
3
50.00%
David S. Miller
10
9.52%
1
16.67%
Arnaldo Carvalho de Melo
3
2.86%
1
16.67%
Ralf Bächle
2
1.90%
1
16.67%
Total
105
100.00%
6
100.00%


static struct proto rose_proto = {
	.name	  = "ROSE",
	.owner	  = THIS_MODULE,
	.obj_size = sizeof(struct rose_sock),
};



static int rose_create(struct net *net, struct socket *sock, int protocol,
		       int kern)
{
	struct sock *sk;
	struct rose_sock *rose;

	if (!net_eq(net, &init_net))
		return -EAFNOSUPPORT;

	if (sock->type != SOCK_SEQPACKET || protocol != 0)
		return -ESOCKTNOSUPPORT;

	sk = sk_alloc(net, PF_ROSE, GFP_ATOMIC, &rose_proto, kern);
	if (sk == NULL)
		return -ENOMEM;

	rose = rose_sk(sk);

	sock_init_data(sock, sk);

	skb_queue_head_init(&rose->ack_queue);
#ifdef M_BIT
	skb_queue_head_init(&rose->frag_queue);
	rose->fraglen    = 0;
#endif

	sock->ops    = &rose_proto_ops;
	sk->sk_protocol = protocol;

	init_timer(&rose->timer);
	init_timer(&rose->idletimer);

	rose->t1   = msecs_to_jiffies(sysctl_rose_call_request_timeout);
	rose->t2   = msecs_to_jiffies(sysctl_rose_reset_request_timeout);
	rose->t3   = msecs_to_jiffies(sysctl_rose_clear_request_timeout);
	rose->hb   = msecs_to_jiffies(sysctl_rose_ack_hold_back_timeout);
	rose->idle = msecs_to_jiffies(sysctl_rose_no_activity_timeout);

	rose->state = ROSE_STATE_0;

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
152
71.36%
8
44.44%
Eric W. Biedermann
19
8.92%
2
11.11%
Ralf Bächle
17
7.98%
2
11.11%
Arnaldo Carvalho de Melo
10
4.69%
2
11.11%
Octavian Purdila
5
2.35%
1
5.56%
Pavel Emelyanov
4
1.88%
1
5.56%
Eric Paris
3
1.41%
1
5.56%
David S. Miller
3
1.41%
1
5.56%
Total
213
100.00%
18
100.00%



static struct sock *rose_make_new(struct sock *osk)
{
	struct sock *sk;
	struct rose_sock *rose, *orose;

	if (osk->sk_type != SOCK_SEQPACKET)
		return NULL;

	sk = sk_alloc(sock_net(osk), PF_ROSE, GFP_ATOMIC, &rose_proto, 0);
	if (sk == NULL)
		return NULL;

	rose = rose_sk(sk);

	sock_init_data(NULL, sk);

	skb_queue_head_init(&rose->ack_queue);
#ifdef M_BIT
	skb_queue_head_init(&rose->frag_queue);
	rose->fraglen  = 0;
#endif

	sk->sk_type     = osk->sk_type;
	sk->sk_priority = osk->sk_priority;
	sk->sk_protocol = osk->sk_protocol;
	sk->sk_rcvbuf   = osk->sk_rcvbuf;
	sk->sk_sndbuf   = osk->sk_sndbuf;
	sk->sk_state    = TCP_ESTABLISHED;
	sock_copy_flags(sk, osk);

	init_timer(&rose->timer);
	init_timer(&rose->idletimer);

	orose		= rose_sk(osk);
	rose->t1	= orose->t1;
	rose->t2	= orose->t2;
	rose->t3	= orose->t3;
	rose->hb	= orose->hb;
	rose->idle	= orose->idle;
	rose->defer	= orose->defer;
	rose->device	= orose->device;
	rose->qbitincl	= orose->qbitincl;

	return sk;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
187
75.10%
8
42.11%
David S. Miller
21
8.43%
1
5.26%
Arnaldo Carvalho de Melo
21
8.43%
2
10.53%
Thomas Graf
6
2.41%
2
10.53%
Eric W. Biedermann
4
1.61%
2
10.53%
Pavel Emelyanov
4
1.61%
1
5.26%
Ralf Bächle
3
1.20%
2
10.53%
Hideaki Yoshifuji / 吉藤英明
3
1.20%
1
5.26%
Total
249
100.00%
19
100.00%



static int rose_release(struct socket *sock)
{
	struct sock *sk = sock->sk;
	struct rose_sock *rose;

	if (sk == NULL) return 0;

	sock_hold(sk);
	sock_orphan(sk);
	lock_sock(sk);
	rose = rose_sk(sk);

	switch (rose->state) {
	case ROSE_STATE_0:
		release_sock(sk);
		rose_disconnect(sk, 0, -1, -1);
		lock_sock(sk);
		rose_destroy_socket(sk);
		break;

	case ROSE_STATE_2:
		rose->neighbour->use--;
		release_sock(sk);
		rose_disconnect(sk, 0, -1, -1);
		lock_sock(sk);
		rose_destroy_socket(sk);
		break;

	case ROSE_STATE_1:
	case ROSE_STATE_3:
	case ROSE_STATE_4:
	case ROSE_STATE_5:
		rose_clear_queues(sk);
		rose_stop_idletimer(sk);
		rose_write_internal(sk, ROSE_CLEAR_REQUEST);
		rose_start_t3timer(sk);
		rose->state  = ROSE_STATE_2;
		sk->sk_state    = TCP_CLOSE;
		sk->sk_shutdown |= SEND_SHUTDOWN;
		sk->sk_state_change(sk);
		sock_set_flag(sk, SOCK_DEAD);
		sock_set_flag(sk, SOCK_DESTROY);
		break;

	default:
		break;
	}

	sock->sk = NULL;
	release_sock(sk);
	sock_put(sk);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
160
69.57%
5
45.45%
Jarek Poplawski
45
19.57%
1
9.09%
David S. Miller
10
4.35%
1
9.09%
Arnaldo Carvalho de Melo
9
3.91%
2
18.18%
James Morris
4
1.74%
1
9.09%
Ralf Bächle
2
0.87%
1
9.09%
Total
230
100.00%
11
100.00%



static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
{
	struct sock *sk = sock->sk;
	struct rose_sock *rose = rose_sk(sk);
	struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
	struct net_device *dev;
	ax25_address *source;
	ax25_uid_assoc *user;
	int n;

	if (!sock_flag(sk, SOCK_ZAPPED))
		return -EINVAL;

	if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
		return -EINVAL;

	if (addr->srose_family != AF_ROSE)
		return -EINVAL;

	if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
		return -EINVAL;

	if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS)
		return -EINVAL;

	if ((dev = rose_dev_get(&addr->srose_addr)) == NULL)
		return -EADDRNOTAVAIL;

	source = &addr->srose_call;

	user = ax25_findbyuid(current_euid());
	if (user) {
		rose->source_call = user->call;
		ax25_uid_put(user);
	} else {
		if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE))
			return -EACCES;
		rose->source_call   = *source;
	}

	rose->source_addr   = addr->srose_addr;
	rose->device        = dev;
	rose->source_ndigis = addr->srose_ndigis;

	if (addr_len == sizeof(struct full_sockaddr_rose)) {
		struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
		for (n = 0 ; n < addr->srose_ndigis ; n++)
			rose->source_digis[n] = full_addr->srose_digis[n];
	} else {
		if (rose->source_ndigis == 1) {
			rose->source_digis[0] = addr->srose_digi;
		}
	}

	rose_insert_socket(sk);

	sock_reset_flag(sk, SOCK_ZAPPED);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
287
83.92%
7
50.00%
Ralf Bächle
30
8.77%
2
14.29%