#include <linux/if_arp.h>
#include <linux/smp_lock.h>
#include <linux/termios.h> /* For TIOCOUTQ/INQ */
+#include <linux/compat.h>
#include <net/datalink.h>
#include <net/psnap.h>
#include <net/sock.h>
{
/* This ought to be unwrapped neatly. I'll trust gcc for now */
while (len--) {
- sum += *data;
- sum <<= 1;
- if (sum & 0x10000) {
- sum++;
- sum &= 0xffff;
- }
- data++;
+ sum += *data++;
+ sum = rol16(sum, 1);
}
return sum;
}
* Create a socket. Initialise the socket, blank the addresses
* set the state.
*/
-static int atalk_create(struct net *net, struct socket *sock, int protocol)
+static int atalk_create(struct net *net, struct socket *sock, int protocol,
+ int kern)
{
struct sock *sk;
int rc = -ESOCKTNOSUPPORT;
- if (net != &init_net)
+ if (!net_eq(net, &init_net))
return -EAFNOSUPPORT;
/*
{
struct sock *sk = sock->sk;
+ lock_kernel();
if (sk) {
sock_orphan(sk);
sock->sk = NULL;
atalk_destroy_socket(sk);
}
+ unlock_kernel();
return 0;
}
struct sockaddr_at *addr = (struct sockaddr_at *)uaddr;
struct sock *sk = sock->sk;
struct atalk_sock *at = at_sk(sk);
+ int err;
if (!sock_flag(sk, SOCK_ZAPPED) ||
addr_len != sizeof(struct sockaddr_at))
if (addr->sat_family != AF_APPLETALK)
return -EAFNOSUPPORT;
+ lock_kernel();
if (addr->sat_addr.s_net == htons(ATADDR_ANYNET)) {
struct atalk_addr *ap = atalk_find_primary();
+ err = -EADDRNOTAVAIL;
if (!ap)
- return -EADDRNOTAVAIL;
+ goto out;
at->src_net = addr->sat_addr.s_net = ap->s_net;
at->src_node = addr->sat_addr.s_node= ap->s_node;
} else {
+ err = -EADDRNOTAVAIL;
if (!atalk_find_interface(addr->sat_addr.s_net,
addr->sat_addr.s_node))
- return -EADDRNOTAVAIL;
+ goto out;
at->src_net = addr->sat_addr.s_net;
at->src_node = addr->sat_addr.s_node;
}
if (addr->sat_port == ATADDR_ANYPORT) {
- int n = atalk_pick_and_bind_port(sk, addr);
+ err = atalk_pick_and_bind_port(sk, addr);
- if (n < 0)
- return n;
+ if (err < 0)
+ goto out;
} else {
at->src_port = addr->sat_port;
+ err = -EADDRINUSE;
if (atalk_find_or_insert_socket(sk, addr))
- return -EADDRINUSE;
+ goto out;
}
sock_reset_flag(sk, SOCK_ZAPPED);
- return 0;
+ err = 0;
+out:
+ unlock_kernel();
+ return err;
}
/* Set the address we talk to */
struct sock *sk = sock->sk;
struct atalk_sock *at = at_sk(sk);
struct sockaddr_at *addr;
+ int err;
sk->sk_state = TCP_CLOSE;
sock->state = SS_UNCONNECTED;
#endif
}
+ lock_kernel();
+ err = -EBUSY;
if (sock_flag(sk, SOCK_ZAPPED))
if (atalk_autobind(sk) < 0)
- return -EBUSY;
+ goto out;
+ err = -ENETUNREACH;
if (!atrtr_get_dev(&addr->sat_addr))
- return -ENETUNREACH;
+ goto out;
at->dest_port = addr->sat_port;
at->dest_net = addr->sat_addr.s_net;
sock->state = SS_CONNECTED;
sk->sk_state = TCP_ESTABLISHED;
- return 0;
+ err = 0;
+out:
+ unlock_kernel();
+ return err;
}
/*
struct sockaddr_at sat;
struct sock *sk = sock->sk;
struct atalk_sock *at = at_sk(sk);
+ int err;
+ lock_kernel();
+ err = -ENOBUFS;
if (sock_flag(sk, SOCK_ZAPPED))
if (atalk_autobind(sk) < 0)
- return -ENOBUFS;
+ goto out;
*uaddr_len = sizeof(struct sockaddr_at);
memset(&sat.sat_zero, 0, sizeof(sat.sat_zero));
if (peer) {
+ err = -ENOTCONN;
if (sk->sk_state != TCP_ESTABLISHED)
- return -ENOTCONN;
+ goto out;
sat.sat_addr.s_net = at->dest_net;
sat.sat_addr.s_node = at->dest_node;
sat.sat_port = at->src_port;
}
+ err = 0;
sat.sat_family = AF_APPLETALK;
memcpy(uaddr, &sat, sizeof(sat));
- return 0;
+
+out:
+ unlock_kernel();
+ return err;
+}
+
+static unsigned int atalk_poll(struct file *file, struct socket *sock,
+ poll_table *wait)
+{
+ int err;
+ lock_kernel();
+ err = datagram_poll(file, sock, wait);
+ unlock_kernel();
+ return err;
}
#if defined(CONFIG_IPDDP) || defined(CONFIG_IPDDP_MODULE)
if (len > DDP_MAXSZ)
return -EMSGSIZE;
+ lock_kernel();
if (usat) {
+ err = -EBUSY;
if (sock_flag(sk, SOCK_ZAPPED))
if (atalk_autobind(sk) < 0)
- return -EBUSY;
+ goto out;
+ err = -EINVAL;
if (msg->msg_namelen < sizeof(*usat) ||
usat->sat_family != AF_APPLETALK)
- return -EINVAL;
+ goto out;
+ err = -EPERM;
/* netatalk didn't implement this check */
if (usat->sat_addr.s_node == ATADDR_BCAST &&
!sock_flag(sk, SOCK_BROADCAST)) {
- return -EPERM;
+ goto out;
}
} else {
+ err = -ENOTCONN;
if (sk->sk_state != TCP_ESTABLISHED)
- return -ENOTCONN;
+ goto out;
usat = &local_satalk;
usat->sat_family = AF_APPLETALK;
usat->sat_port = at->dest_port;
rt = atrtr_find(&at_hint);
}
+ err = ENETUNREACH;
if (!rt)
- return -ENETUNREACH;
+ goto out;
dev = rt->dev;
size += dev->hard_header_len;
skb = sock_alloc_send_skb(sk, size, (flags & MSG_DONTWAIT), &err);
if (!skb)
- return err;
+ goto out;
skb->sk = sk;
skb_reserve(skb, ddp_dl->header_length);
err = memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len);
if (err) {
kfree_skb(skb);
- return -EFAULT;
+ err = -EFAULT;
+ goto out;
}
if (sk->sk_no_check == 1)
rt = atrtr_find(&at_lo);
if (!rt) {
kfree_skb(skb);
- return -ENETUNREACH;
+ err = -ENETUNREACH;
+ goto out;
}
dev = rt->dev;
skb->dev = dev;
}
SOCK_DEBUG(sk, "SK %p: Done write (%Zd).\n", sk, len);
- return len;
+out:
+ unlock_kernel();
+ return err ? : len;
}
static int atalk_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg,
int copied = 0;
int offset = 0;
int err = 0;
- struct sk_buff *skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT,
+ struct sk_buff *skb;
+
+ lock_kernel();
+ skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT,
flags & MSG_DONTWAIT, &err);
if (!skb)
- return err;
+ goto out;
/* FIXME: use skb->cb to be able to use shared skbs */
ddp = ddp_hdr(skb);
}
skb_free_datagram(sk, skb); /* Free the datagram. */
+
+out:
+ unlock_kernel();
return err ? : copied;
}
static int atalk_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
/*
- * All Appletalk ioctls except SIOCATALKDIFADDR are standard. And
- * SIOCATALKDIFADDR is handled by upper layer as well, so there is
- * nothing to do. Eventually SIOCATALKDIFADDR should be moved
- * here so there is no generic SIOCPROTOPRIVATE translation in the
- * system.
+ * SIOCATALKDIFADDR is a SIOCPROTOPRIVATE ioctl number, so we
+ * cannot handle it in common code. The data we access if ifreq
+ * here is compatible, so we can simply call the native
+ * handler.
*/
+ if (cmd == SIOCATALKDIFADDR)
+ return atalk_ioctl(sock, cmd, (unsigned long)compat_ptr(arg));
+
return -ENOIOCTLCMD;
}
#endif
-static struct net_proto_family atalk_family_ops = {
+static const struct net_proto_family atalk_family_ops = {
.family = PF_APPLETALK,
.create = atalk_create,
.owner = THIS_MODULE,
};
-static const struct proto_ops SOCKOPS_WRAPPED(atalk_dgram_ops) = {
+static const struct proto_ops atalk_dgram_ops = {
.family = PF_APPLETALK,
.owner = THIS_MODULE,
.release = atalk_release,
.socketpair = sock_no_socketpair,
.accept = sock_no_accept,
.getname = atalk_getname,
- .poll = datagram_poll,
+ .poll = atalk_poll,
.ioctl = atalk_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = atalk_compat_ioctl,
.sendpage = sock_no_sendpage,
};
-SOCKOPS_WRAP(atalk_dgram, PF_APPLETALK);
-
static struct notifier_block ddp_notifier = {
.notifier_call = ddp_device_event,
};
projects / linux-flexiantxendom0-3.2.10.git / blobdiff