1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
/*
Copyright (C) 1995 Free Software Foundation, Inc.
Written by Michael I. Bushnell.
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>
/* Callback function needed for calls to fshelp_fetch_root. See
<hurd/fshelp.h> for the interface description. */
static error_t
_diskfs_translator_callback_fn (void *cookie1, void *cookie2,
mach_port_t *underlying,
uid_t *uid, gid_t *gid, char **argz,
int *argz_len)
{
struct node *np = cookie1;
mach_port_t *dotdot = cookie2;
error_t err;
struct protid *newpi;
if (!np->istranslated)
return ENOENT;
err = diskfs_get_translator (np, argz, (u_int *) argz_len);
if (err)
return err;
*uid = np->dn_stat.st_uid;
*gid = np->dn_stat.st_gid;
newpi = diskfs_make_protid (diskfs_make_peropen (np,
(O_READ|O_EXEC
/* For now, don't give translators write access to their underlying node.
The fsys_startup interface will soon make this irrelevant anyway. */
#ifdef XXX
| (!diskfs_readonly
? O_WRITE : 0)
#endif
),
*dotdot),
uid, 1, gid, 1);
*underlying = ports_get_right (newpi);
mach_port_insert_right (mach_task_self (), *underlying, *underlying,
MACH_MSG_TYPE_MAKE_SEND);
ports_port_deref (newpi);
return 0;
}
fshelp_callback_t _diskfs_translator_callback = _diskfs_translator_callback_fn;
|
