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/* Callback functions for starting translators
Copyright (C) 1995,96,97,2001,02 Free Software Foundation, Inc.
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "priv.h"
#include <fcntl.h>
#include <hurd/fshelp.h>
/* Callback function needed for calls to fshelp_fetch_root. See
<hurd/fshelp.h> for the interface description. */
static error_t
_netfs_translator_callback1_fn (void *cookie1, void *cookie2,
uid_t *uid, gid_t *gid,
char **argz, size_t *argz_len)
{
error_t err;
struct node *np = cookie1;
if (! (np->nn_stat.st_mode & S_IPTRANS))
return ENOENT;
err = netfs_get_translator (np, argz, argz_len);
if (err)
{
assert_backtrace (err != EOPNOTSUPP);
return err;
}
*uid = np->nn_stat.st_uid;
*gid = np->nn_stat.st_gid;
return 0;
}
/* Callback function needed for calls to fshelp_fetch_root. See
<hurd/fshelp.h> for the interface description. */
static error_t
_netfs_translator_callback2_fn (void *cookie1, void *cookie2, int flags,
mach_port_t *underlying,
mach_msg_type_name_t *underlying_type)
{
error_t err;
struct protid *cred;
struct node *node = cookie1;
struct fshelp_stat_cookie2 *statc = cookie2;
struct iouser *user;
struct peropen *po;
err = iohelp_create_simple_iouser (&user, node->nn_stat.st_uid,
node->nn_stat.st_gid);
if (err)
return err;
po = netfs_make_peropen (node, flags, statc->next);
if (! po)
{
err = errno;
iohelp_free_iouser (user);
return err;
}
cred = netfs_make_protid (po, user);
if (cred)
{
*underlying = ports_get_right (cred);
*underlying_type = MACH_MSG_TYPE_MAKE_SEND;
ports_port_deref (cred);
return 0;
}
else
{
err = errno;
netfs_release_peropen (po);
iohelp_free_iouser (user);
return err;
}
}
fshelp_fetch_root_callback1_t _netfs_translator_callback1 =
_netfs_translator_callback1_fn;
fshelp_fetch_root_callback2_t _netfs_translator_callback2 =
_netfs_translator_callback2_fn;
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