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
|
/* Starting a passive translator
Copyright (C) 1994, 1995, 1999 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 "treefs.h"
#include <fcntl.h>
int fshelp_transboot_port_type = PT_TRANSBOOT;
/* Start the translator TRANS (of length TRANS_LEN) on NODE, which should be
locked, and will be unlocked when this function returns. PARENT_PORT is
a send right to use as the parent port passed to the translator. */
error_t
_treefs_node_start_translator (struct treefs_node *node,
char *trans, unsigned trans_len,
file_t parent_port)
{
error_t err;
int mode = O_READ | O_EXEC;
struct treefs_auth *auth;
file_t node_port;
uid_t uid, gid;
err = treefs_node_get_trans_auth (node, &auth);
if (err)
return err;
if (!node->fsys->readonly && treefs_node_type (node) == S_IFREG)
mode |= O_WRITE;
/* Create the REALNODE port for the new filesystem. */
node_port = treefs_node_make_right (node, mode, parent_port, auth);
mach_port_insert_right (mach_task_self (), node_port, node_port,
MACH_MSG_TYPE_MAKE_SEND);
mutex_unlock (&node->lock);
/* XXXX Change libfshelp so that it take more than 1 uid/gid? */
uid = auth->nuids > 0 ? auth->uids[0] : -1;
gid = auth->ngids > 0 ? auth->gids[0] : -1;
/* XXX this should use fshelp_start_translator_long. */
err =
fshelp_start_translator (&node->active_trans, NULL, trans, trans_len,
parent_port, node_port, uid, gid);
treefs_node_auth_unref (node, auth);
return err;
}
|
