/* Shutdown pager P and prevent any future paging activity on it. */
void
pager_shutdown (struct pager *p)
{
/* Sync and flush pager */
pager_sync (p, 1);
pager_flush (p, 1);
mutex_lock (&p->interlock);
p->pager_state = SHUTDOWN;
ports_destroy_right (p);
mutex_unlock (&p->interlock);
}
int
ethernet_close (struct device *dev)
{
struct ether_device *edev = (struct ether_device *) dev->priv;
mach_port_deallocate (mach_task_self (), edev->readptname);
edev->readptname = MACH_PORT_NULL;
ports_destroy_right (edev->readpt);
edev->readpt = NULL;
device_close (edev->ether_port);
mach_port_deallocate (mach_task_self (), edev->ether_port);
edev->ether_port = MACH_PORT_NULL;
}
error_t
trivfs_goaway (struct trivfs_control *fsys, int flags)
{
int count;
/* Stop new requests. */
ports_inhibit_class_rpcs (trivfs_cntl_portclasses[0]);
ports_inhibit_class_rpcs (trivfs_protid_portclasses[0]);
/* Are there any extant user ports for the /servers/exec file? */
count = ports_count_class (trivfs_protid_portclasses[0]);
if (count == 0 || (flags & FSYS_GOAWAY_FORCE))
{
/* No users. Disconnect from the filesystem. */
mach_port_deallocate (mach_task_self (), fsys->underlying);
/* Are there remaining exec_startup RPCs to answer? */
count = ports_count_class (execboot_portclass);
if (count == 0)
/* Nope. We got no reason to live. */
exit (0);
/* Continue servicing tasks starting up. */
ports_enable_class (execboot_portclass);
/* No more communication with the parent filesystem. */
ports_destroy_right (fsys);
return 0;
}
else
{
/* We won't go away, so start things going again... */
ports_enable_class (trivfs_protid_portclasses[0]);
ports_resume_class_rpcs (trivfs_cntl_portclasses[0]);
ports_resume_class_rpcs (trivfs_protid_portclasses[0]);
return EBUSY;
}
}
/* Implement io_revoke as described in <hurd/io.defs>. */
kern_return_t
diskfs_S_io_revoke (struct protid *cred)
{
error_t err;
struct node *np;
error_t
iterator_function (void *port)
{
struct protid *user = port;
if ((user != cred)
&& (user->po->np == np))
ports_destroy_right (user);
return 0;
}
if (!cred)
return EOPNOTSUPP;
np = cred->po->np;
mutex_lock (&np->lock);
err = fshelp_isowner (&np->dn_stat, cred->user);
mutex_unlock (&np->lock);
if (err)
return err;
ports_inhibit_bucket_rpcs (diskfs_port_bucket);
ports_class_iterate (diskfs_protid_class, iterator_function);
ports_resume_bucket_rpcs (diskfs_port_bucket);
return 0;
}
