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path: root/net/rose/af_rose.c
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Diffstat (limited to 'net/rose/af_rose.c')
-rw-r--r--net/rose/af_rose.c120
1 files changed, 84 insertions, 36 deletions
diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c
index 36fefc3957d7..fd67494f2815 100644
--- a/net/rose/af_rose.c
+++ b/net/rose/af_rose.c
@@ -170,7 +170,7 @@ void rose_kill_by_neigh(struct rose_neigh *neigh)
if (rose->neighbour == neigh) {
rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
- rose->neighbour->use--;
+ rose_neigh_put(rose->neighbour);
rose->neighbour = NULL;
}
}
@@ -182,21 +182,47 @@ void rose_kill_by_neigh(struct rose_neigh *neigh)
*/
static void rose_kill_by_device(struct net_device *dev)
{
- struct sock *s;
+ struct sock *sk, *array[16];
+ struct rose_sock *rose;
+ bool rescan;
+ int i, cnt;
+start:
+ rescan = false;
+ cnt = 0;
spin_lock_bh(&rose_list_lock);
- sk_for_each(s, &rose_list) {
- struct rose_sock *rose = rose_sk(s);
+ sk_for_each(sk, &rose_list) {
+ rose = rose_sk(sk);
+ if (rose->device == dev) {
+ if (cnt == ARRAY_SIZE(array)) {
+ rescan = true;
+ break;
+ }
+ sock_hold(sk);
+ array[cnt++] = sk;
+ }
+ }
+ spin_unlock_bh(&rose_list_lock);
+ for (i = 0; i < cnt; i++) {
+ sk = array[cnt];
+ rose = rose_sk(sk);
+ lock_sock(sk);
+ spin_lock_bh(&rose_list_lock);
if (rose->device == dev) {
- rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
+ rose_disconnect(sk, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
if (rose->neighbour)
- rose->neighbour->use--;
+ rose_neigh_put(rose->neighbour);
netdev_put(rose->device, &rose->dev_tracker);
rose->device = NULL;
}
+ spin_unlock_bh(&rose_list_lock);
+ release_sock(sk);
+ sock_put(sk);
+ cond_resched();
}
- spin_unlock_bh(&rose_list_lock);
+ if (rescan)
+ goto start;
}
/*
@@ -319,7 +345,7 @@ void rose_destroy_socket(struct sock *);
*/
static void rose_destroy_timer(struct timer_list *t)
{
- struct sock *sk = from_timer(sk, t, sk_timer);
+ struct sock *sk = timer_container_of(sk, t, sk_timer);
rose_destroy_socket(sk);
}
@@ -371,15 +397,15 @@ static int rose_setsockopt(struct socket *sock, int level, int optname,
{
struct sock *sk = sock->sk;
struct rose_sock *rose = rose_sk(sk);
- int opt;
+ unsigned int opt;
if (level != SOL_ROSE)
return -ENOPROTOOPT;
- if (optlen < sizeof(int))
+ if (optlen < sizeof(unsigned int))
return -EINVAL;
- if (copy_from_sockptr(&opt, optval, sizeof(int)))
+ if (copy_from_sockptr(&opt, optval, sizeof(unsigned int)))
return -EFAULT;
switch (optname) {
@@ -388,31 +414,31 @@ static int rose_setsockopt(struct socket *sock, int level, int optname,
return 0;
case ROSE_T1:
- if (opt < 1)
+ if (opt < 1 || opt > UINT_MAX / HZ)
return -EINVAL;
rose->t1 = opt * HZ;
return 0;
case ROSE_T2:
- if (opt < 1)
+ if (opt < 1 || opt > UINT_MAX / HZ)
return -EINVAL;
rose->t2 = opt * HZ;
return 0;
case ROSE_T3:
- if (opt < 1)
+ if (opt < 1 || opt > UINT_MAX / HZ)
return -EINVAL;
rose->t3 = opt * HZ;
return 0;
case ROSE_HOLDBACK:
- if (opt < 1)
+ if (opt < 1 || opt > UINT_MAX / HZ)
return -EINVAL;
rose->hb = opt * HZ;
return 0;
case ROSE_IDLE:
- if (opt < 0)
+ if (opt > UINT_MAX / (60 * HZ))
return -EINVAL;
rose->idle = opt * 60 * HZ;
return 0;
@@ -488,6 +514,12 @@ static int rose_listen(struct socket *sock, int backlog)
{
struct sock *sk = sock->sk;
+ lock_sock(sk);
+ if (sock->state != SS_UNCONNECTED) {
+ release_sock(sk);
+ return -EINVAL;
+ }
+
if (sk->sk_state != TCP_LISTEN) {
struct rose_sock *rose = rose_sk(sk);
@@ -497,8 +529,10 @@ static int rose_listen(struct socket *sock, int backlog)
memset(rose->dest_digis, 0, AX25_ADDR_LEN * ROSE_MAX_DIGIS);
sk->sk_max_ack_backlog = backlog;
sk->sk_state = TCP_LISTEN;
+ release_sock(sk);
return 0;
}
+ release_sock(sk);
return -EOPNOTSUPP;
}
@@ -575,7 +609,7 @@ static struct sock *rose_make_new(struct sock *osk)
#endif
sk->sk_type = osk->sk_type;
- sk->sk_priority = osk->sk_priority;
+ sk->sk_priority = READ_ONCE(osk->sk_priority);
sk->sk_protocol = osk->sk_protocol;
sk->sk_rcvbuf = osk->sk_rcvbuf;
sk->sk_sndbuf = osk->sk_sndbuf;
@@ -621,7 +655,7 @@ static int rose_release(struct socket *sock)
break;
case ROSE_STATE_2:
- rose->neighbour->use--;
+ rose_neigh_put(rose->neighbour);
release_sock(sk);
rose_disconnect(sk, 0, -1, -1);
lock_sock(sk);
@@ -648,7 +682,10 @@ static int rose_release(struct socket *sock)
break;
}
+ spin_lock_bh(&rose_list_lock);
netdev_put(rose->device, &rose->dev_tracker);
+ rose->device = NULL;
+ spin_unlock_bh(&rose_list_lock);
sock->sk = NULL;
release_sock(sk);
sock_put(sk);
@@ -656,7 +693,7 @@ static int rose_release(struct socket *sock)
return 0;
}
-static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+static int rose_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int addr_len)
{
struct sock *sk = sock->sk;
struct rose_sock *rose = rose_sk(sk);
@@ -664,11 +701,9 @@ static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
struct net_device *dev;
ax25_address *source;
ax25_uid_assoc *user;
+ int err = -EINVAL;
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;
@@ -681,8 +716,15 @@ static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS)
return -EINVAL;
- if ((dev = rose_dev_get(&addr->srose_addr)) == NULL)
- return -EADDRNOTAVAIL;
+ lock_sock(sk);
+
+ if (!sock_flag(sk, SOCK_ZAPPED))
+ goto out_release;
+
+ err = -EADDRNOTAVAIL;
+ dev = rose_dev_get(&addr->srose_addr);
+ if (!dev)
+ goto out_release;
source = &addr->srose_call;
@@ -693,7 +735,8 @@ static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
} else {
if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE)) {
dev_put(dev);
- return -EACCES;
+ err = -EACCES;
+ goto out_release;
}
rose->source_call = *source;
}
@@ -716,11 +759,14 @@ static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
rose_insert_socket(sk);
sock_reset_flag(sk, SOCK_ZAPPED);
-
- return 0;
+ err = 0;
+out_release:
+ release_sock(sk);
+ return err;
}
-static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags)
+static int rose_connect(struct socket *sock, struct sockaddr_unsized *uaddr, int addr_len,
+ int flags)
{
struct sock *sk = sock->sk;
struct rose_sock *rose = rose_sk(sk);
@@ -778,6 +824,7 @@ static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_le
rose->lci = rose_new_lci(rose->neighbour);
if (!rose->lci) {
err = -ENETUNREACH;
+ rose_neigh_put(rose->neighbour);
goto out_release;
}
@@ -789,12 +836,14 @@ static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_le
dev = rose_dev_first();
if (!dev) {
err = -ENETUNREACH;
+ rose_neigh_put(rose->neighbour);
goto out_release;
}
user = ax25_findbyuid(current_euid());
if (!user) {
err = -EINVAL;
+ rose_neigh_put(rose->neighbour);
dev_put(dev);
goto out_release;
}
@@ -829,8 +878,6 @@ static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_le
rose->state = ROSE_STATE_1;
- rose->neighbour->use++;
-
rose_write_internal(sk, ROSE_CALL_REQUEST);
rose_start_heartbeat(sk);
rose_start_t1timer(sk);
@@ -882,8 +929,8 @@ out_release:
return err;
}
-static int rose_accept(struct socket *sock, struct socket *newsock, int flags,
- bool kern)
+static int rose_accept(struct socket *sock, struct socket *newsock,
+ struct proto_accept_arg *arg)
{
struct sk_buff *skb;
struct sock *newsk;
@@ -916,7 +963,7 @@ static int rose_accept(struct socket *sock, struct socket *newsock, int flags,
if (skb)
break;
- if (flags & O_NONBLOCK) {
+ if (arg->flags & O_NONBLOCK) {
err = -EWOULDBLOCK;
break;
}
@@ -1032,7 +1079,7 @@ int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct ros
GFP_ATOMIC);
make_rose->facilities = facilities;
- make_rose->neighbour->use++;
+ rose_neigh_hold(make_rose->neighbour);
if (rose_sk(sk)->defer) {
make_rose->state = ROSE_STATE_5;
@@ -1307,9 +1354,11 @@ static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
case TIOCINQ: {
struct sk_buff *skb;
long amount = 0L;
- /* These two are safe on a single CPU system as only user tasks fiddle here */
+
+ spin_lock_irq(&sk->sk_receive_queue.lock);
if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
amount = skb->len;
+ spin_unlock_irq(&sk->sk_receive_queue.lock);
return put_user(amount, (unsigned int __user *) argp);
}
@@ -1488,7 +1537,6 @@ static const struct proto_ops rose_proto_ops = {
.sendmsg = rose_sendmsg,
.recvmsg = rose_recvmsg,
.mmap = sock_no_mmap,
- .sendpage = sock_no_sendpage,
};
static struct notifier_block rose_dev_notifier = {
generated by cgit (git 2.34.1) at 2025-12-25 11:09:07 +0000