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/*
Copyright (C) 1994,95,96,2000,01 Free Software Foundation, Inc.
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, 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "priv.h"
#include "io_S.h"
/* Implement io_reathenticate as described in <hurd/io.defs>. */
kern_return_t
diskfs_S_io_reauthenticate (struct protid *cred,
mach_port_t rend_port)
{
struct protid *newcred;
error_t err;
mach_port_t newright;
struct iouser *user;
if (cred == 0)
return EOPNOTSUPP;
/* This routine must carefully ignore EINTR because we
are a simpleroutine, so callers won't know to restart. */
pthread_mutex_lock (&cred->po->np->lock);
refcount_ref (&cred->po->refcnt);
do
err = diskfs_start_protid (cred->po, &newcred);
while (err == EINTR);
if (err)
{
refcount_deref (&cred->po->refcnt);
pthread_mutex_unlock (&cred->po->np->lock);
return err;
}
newright = ports_get_send_right (newcred);
assert_backtrace (newright != MACH_PORT_NULL);
/* Release the node lock while blocking on the auth server and client. */
pthread_mutex_unlock (&cred->po->np->lock);
err = iohelp_reauth (&user, diskfs_auth_server_port, rend_port,
newright, 1);
pthread_mutex_lock (&cred->po->np->lock);
if (! err)
{
diskfs_finish_protid (newcred, user);
iohelp_free_iouser (user);
mach_port_deallocate (mach_task_self (), rend_port);
}
mach_port_deallocate (mach_task_self (), newright);
pthread_mutex_unlock (&cred->po->np->lock);
ports_port_deref (newcred);
return err;
}
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