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/*
Copyright (C) 1994, 1995, 1996 Free Software Foundation
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;
uid_t gubuf[20], ggbuf[20], aubuf[20], agbuf[20];
uid_t *gen_uids, *gen_gids, *aux_uids, *aux_gids;
u_int genuidlen, gengidlen, auxuidlen, auxgidlen;
error_t err;
if (cred == 0)
return EOPNOTSUPP;
genuidlen = gengidlen = auxuidlen = auxgidlen = 20;
gen_uids = gubuf;
gen_gids = ggbuf;
aux_uids = aubuf;
aux_gids = agbuf;
mutex_lock (&cred->po->np->lock);
err = diskfs_start_protid (cred->po, &newcred);
if (err)
{
mutex_unlock (&cred->po->np->lock);
return err;
}
err = auth_server_authenticate (diskfs_auth_server_port,
ports_get_right (cred),
MACH_MSG_TYPE_MAKE_SEND,
rend_port,
MACH_MSG_TYPE_MOVE_SEND,
ports_get_right (newcred),
MACH_MSG_TYPE_MAKE_SEND,
&gen_uids, &genuidlen,
&aux_uids, &auxuidlen,
&gen_gids, &gengidlen,
&aux_gids, &auxgidlen);
assert_perror (err); /* XXX */
diskfs_finish_protid (newcred, gen_uids, genuidlen, gen_gids, gengidlen);
mutex_unlock (&cred->po->np->lock);
ports_port_deref (newcred);
if (gubuf != gen_uids)
vm_deallocate (mach_task_self (), (u_int) gen_uids,
genuidlen * sizeof (uid_t));
if (ggbuf != gen_gids)
vm_deallocate (mach_task_self (), (u_int) gen_gids,
gengidlen * sizeof (uid_t));
if (aubuf != aux_uids)
vm_deallocate (mach_task_self (), (u_int) aux_uids,
auxuidlen * sizeof (uid_t));
if (agbuf != aux_gids)
vm_deallocate (mach_task_self (), (u_int) aux_gids,
auxgidlen * sizeof (uid_t));
return 0;
}
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