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/*
Copyright (C) 1995, 1996 Free Software Foundation, Inc.
Written by Michael I. Bushnell, p/BSG.
This file is part of the GNU Hurd.
The GNU Hurd 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, or (at
your option) any later version.
The GNU Hurd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. */
#include "pfinet.h"
#include <string.h>
/* Create a sock_user structure, initialized from SOCK and ISROOT. */
struct sock_user *
make_sock_user (struct socket *sock, int isroot)
{
struct sock_user *user;
errno = ports_create_port (socketport_class, pfinet_bucket,
sizeof (struct sock_user), &user);
if (errno)
return 0;
user->isroot = isroot;
user->sock = sock;
sock->refcnt++;
return user;
}
/* Create a sockaddr port. Fill in *ADDR and *ADDRTYPE accordingly.
The address should come from SOCK; PEER is 0 if we want this socket's
name and 1 if we want the peer's name. */
error_t
make_sockaddr_port (struct socket *sock,
int peer,
mach_port_t *addr,
mach_msg_type_name_t *addrtype)
{
char buf[128];
int buflen = 128;
error_t err;
struct sock_addr *addrstruct;
err = (*sock->ops->getname) (sock, (struct sockaddr *)buf, &buflen, peer);
if (err)
return err;
err = ports_create_port (addrport_class, pfinet_bucket,
sizeof (struct sock_addr) + buflen, &addrstruct);
if (err)
return err;
addrstruct->len = buflen;
bcopy (buf, addrstruct->address, buflen);
*addr = ports_get_right (addrstruct);
*addrtype = MACH_MSG_TYPE_MAKE_SEND;
ports_port_deref (addrstruct);
return 0;
}
struct sock_user *
begin_using_socket_port (mach_port_t port)
{
return ports_lookup_port (pfinet_bucket, port, socketport_class);
}
void
end_using_socket_port (struct sock_user *user)
{
if (user)
ports_port_deref (user);
}
struct sock_addr *
begin_using_sockaddr_port (mach_port_t port)
{
return ports_lookup_port (pfinet_bucket, port, addrport_class);
}
void
end_using_sockaddr_port (struct sock_addr *addr)
{
if (addr)
ports_port_deref (addr);
}
/* Nothing need be done here. */
void
clean_addrport (void *arg)
{
}
/* Release the reference on the referenced socket. */
void
clean_socketport (void *arg)
{
struct sock_user *user = arg;
mutex_lock (&global_lock);
user->sock->refcnt--;
if (user->sock->refcnt == 0)
sock_release (user->sock);
mutex_unlock (&global_lock);
}
struct socket *
sock_alloc (void)
{
struct socket *sock;
struct wait_queue *wait, **waitp;
sock = malloc (sizeof (struct wait_queue)
+ sizeof (struct wait_queue *)
+ sizeof (struct socket));
wait = (void *)sock + sizeof (struct socket);
waitp = (void *)wait + sizeof (struct wait_queue);
bzero (sock, sizeof (struct socket));
sock->identity = MACH_PORT_NULL;
sock->state = SS_UNCONNECTED;
sock->wait = waitp;
condition_init (&wait->c);
*waitp = wait;
return sock;
}
static inline void sock_release_peer(struct socket *peer)
{
peer->state = SS_DISCONNECTING;
wake_up_interruptible(peer->wait);
sock_wake_async(peer, 1);
}
void
sock_release (struct socket *sock)
{
int oldstate;
struct socket *peersock, *nextsock;
if ((oldstate = sock->state) != SS_UNCONNECTED)
sock->state = SS_DISCONNECTING;
/*
* Wake up anyone waiting for connections.
*/
for (peersock = sock->iconn; peersock; peersock = nextsock)
{
nextsock = peersock->next;
sock_release_peer(peersock);
}
/*
* Wake up anyone we're connected to. First, we release the
* protocol, to give it a chance to flush data, etc.
*/
peersock = (oldstate == SS_CONNECTED) ? sock->conn : NULL;
if (sock->ops)
(*sock->ops->release) (sock, peersock);
if (peersock)
sock_release_peer(peersock);
if (sock->identity != MACH_PORT_NULL)
mach_port_destroy (mach_task_self (), sock->identity);
free (sock);
}
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