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/* netio - creates socket ports via the filesystem
Copyright (C) 2001, 02 Moritz Schulte <moritz@duesseldorf.ccc.de>
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.
This program 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 02111-1307
USA */
#include <hurd/netfs.h>
#include <errno.h>
#include <stdlib.h>
#include <sys/socket.h>
#include "netio.h"
#include "lib.h"
/* The default stat information for netio nodes. */
struct stat stat_default;
/* Create a new node in the directory *DIR (if DIR is nonzero) and
store it in *NODE. If CONNECT is true (in which case *DIR has to
be a valid directory node), attach the new node to the list of
directory entries of *DIR. Return 0 on success or an error code. */
error_t
node_make_new (struct node *dir, int connect, struct node **node)
{
struct netnode *netnode;
error_t err;
err = my_malloc (sizeof (struct netnode), (void **) &netnode);
if (err)
return err;
*node = netfs_make_node (netnode);
if (! *node)
{
free (netnode);
return ENOMEM;
}
(*node)->nn->flags = 0;
(*node)->nn->host = 0;
(*node)->nn->port = 0;
(*node)->nn->protocol = 0;
(*node)->nn->sock = MACH_PORT_NULL;
(*node)->nn->addr = MACH_PORT_NULL;
(*node)->nn->connected = 0;
(*node)->nn->entries = 0;
(*node)->nn->dir = dir;
(*node)->nn_stat = stat_default;
if (dir)
netfs_nref (dir);
if (connect)
{
(*node)->next = dir->nn->entries;
(*node)->prevp = &dir->nn->entries;
if ((*node)->next)
(*node)->next->prevp = &(*node)->next;
dir->nn->entries = (*node);
}
else
{
(*node)->next = 0;
(*node)->prevp = 0;
}
return err;
}
/* Destroy the node and release a reference to the parent directory. */
error_t
node_destroy (struct node *np)
{
if (np->nn->flags & PORT_NODE)
{
if (np->nn->connected)
socket_shutdown (np->nn->sock, 2);
}
else if (np->nn->flags & HOST_NODE)
free (np->nn->host);
else if (np->nn->flags & PROTOCOL_NODE)
{
free (np->nn->protocol);
*np->prevp = np->next;
if (np->next)
np->next->prevp = np->prevp;
}
assert (np->nn->dir);
spin_unlock (&netfs_node_refcnt_lock); /* FIXME? Is this locking
okay? */
netfs_nput (np->nn->dir);
spin_lock (&netfs_node_refcnt_lock);
free (np->nn);
free (np);
return 0;
}
/* Create a new protocol node for *PROTOCOL in the directory *DIR.
Return 0 on success or an error code. */
error_t
node_make_protocol_node (struct node *dir, struct protocol *protocol)
{
struct node *node;
error_t err;
err = node_make_new (dir, 1, &node);
if (err)
return err;
node->nn->flags |= PROTOCOL_NODE;
node->nn->protocol = protocol;
node->nn_stat.st_mode = S_IFDIR
| S_IRUSR | S_IXUSR
| S_IRGRP | S_IXGRP
| S_IROTH | S_IXOTH;
node->nn_stat.st_ino = protocol->id;
node->nn_stat.st_nlink = 2;
fshelp_touch (&node->nn_stat, TOUCH_ATIME | TOUCH_CTIME | TOUCH_MTIME,
netio_maptime);
return err;
}
/* Create a new host node for HOST in the directory *DIR and store it
in *NODE. Return 0 on success or an error code. */
error_t
node_make_host_node (struct iouser *user, struct node *dir, char *host,
struct node **node)
{
struct node *np;
error_t err;
err = node_make_new (dir, 0, &np);
if (err)
return err;
np->nn->host = strdup (host);
if (! np->nn->host)
{
netfs_nrele (np);
err = ENOMEM;
goto out;
}
np->nn->flags |= HOST_NODE;
np->nn->protocol = dir->nn->protocol;
np->nn_stat.st_mode = S_IFDIR | S_IRUSR | S_IXUSR ;
fshelp_touch (&np->nn_stat, TOUCH_ATIME | TOUCH_CTIME | TOUCH_MTIME,
netio_maptime);
*node = np;
out:
return err;
}
/* Create a new port node for PORT in the directory *DIR and store it
in *NODE. Return 0 on success or an error code. */
error_t
node_make_port_node (struct iouser *user, struct node *dir,
char *port, struct node **node)
{
struct node *np;
error_t err;
err = node_make_new (dir, 0, &np);
if (err)
return err;
np->nn->flags |= PORT_NODE;
np->nn->host = dir->nn->host;
np->nn->protocol = dir->nn->protocol;
np->nn->port = (uint16_t) strtol (port, 0, 10);
np->nn->flags |= HOST_NODE;
np->nn->protocol = dir->nn->protocol;
np->nn_stat.st_mode = S_IFSOCK | S_IRUSR | S_IWUSR ;
fshelp_touch (&np->nn_stat, TOUCH_ATIME | TOUCH_CTIME | TOUCH_MTIME,
netio_maptime);
*node = np;
return err;
}
/* Create the root node. Return 0 on success or an error code. */
error_t
node_make_root_node (struct node **node)
{
struct node *np;
error_t err;
err = node_make_new (0, 0, &np);
if (err)
goto out;
np->nn->flags |= ROOT_NODE;
*node = np;
out:
return err;
}
/* Connect the socket of the node *NP. Return 0 on success or an
error code. */
error_t
node_connect_socket (struct node *np)
{
error_t err;
err = (*np->nn->protocol->socket_open) (np);
if (! err)
np->nn->connected = 1;
return err;
}
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