diff options
Diffstat (limited to 'net/batman-adv/icmp_socket.c')
| -rw-r--r-- | net/batman-adv/icmp_socket.c | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/net/batman-adv/icmp_socket.c b/net/batman-adv/icmp_socket.c index ac3520e057c0..d9c1e7bb7fbf 100644 --- a/net/batman-adv/icmp_socket.c +++ b/net/batman-adv/icmp_socket.c @@ -136,10 +136,9 @@ static ssize_t bat_socket_read(struct file *file, char __user *buf, spin_unlock_bh(&socket_client->lock); - error = __copy_to_user(buf, &socket_packet->icmp_packet, - socket_packet->icmp_len); + packet_len = min(count, socket_packet->icmp_len); + error = copy_to_user(buf, &socket_packet->icmp_packet, packet_len); - packet_len = socket_packet->icmp_len; kfree(socket_packet); if (error) @@ -187,12 +186,7 @@ static ssize_t bat_socket_write(struct file *file, const char __user *buff, skb_reserve(skb, sizeof(struct ethhdr)); icmp_packet = (struct icmp_packet_rr *)skb_put(skb, packet_len); - if (!access_ok(VERIFY_READ, buff, packet_len)) { - len = -EFAULT; - goto free_skb; - } - - if (__copy_from_user(icmp_packet, buff, packet_len)) { + if (copy_from_user(icmp_packet, buff, packet_len)) { len = -EFAULT; goto free_skb; } @@ -217,7 +211,7 @@ static ssize_t bat_socket_write(struct file *file, const char __user *buff, if (icmp_packet->version != COMPAT_VERSION) { icmp_packet->msg_type = PARAMETER_PROBLEM; - icmp_packet->ttl = COMPAT_VERSION; + icmp_packet->version = COMPAT_VERSION; bat_socket_add_packet(socket_client, icmp_packet, packet_len); goto free_skb; } |