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
68
69
70
71
72
73
74
75
76
|
/*
Copyright (C) 1994, 1995 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 <string.h>
/* Build and return a protid which has no user identification for
peropen PO. The node PO->np must be locked. */
struct protid *
diskfs_start_protid (struct peropen *po)
{
struct protid *cred;
cred = ports_allocate_port (diskfs_port_bucket, sizeof (struct protid),
diskfs_protid_class);
po->refcnt++;
cred->po = po;
cred->shared_object = MACH_PORT_NULL;
cred->mapped = 0;
return cred;
}
/* Finish building protid CRED started with diskfs_start_protid;
the uid set is UID (length NUIDS); the gid set is GID (length NGIDS). */
void
diskfs_finish_protid (struct protid *cred, uid_t *uids, int nuids,
gid_t *gids, int ngids)
{
if (!uids)
nuids = 1;
if (!gids)
ngids = 1;
cred->uids = malloc (nuids * sizeof (uid_t));
cred->gids = malloc (ngids * sizeof (uid_t));
cred->nuids = nuids;
cred->ngids = ngids;
if (uids)
bcopy (uids, cred->uids, nuids * sizeof (uid_t));
else
*cred->uids = 0;
if (gids)
bcopy (gids, cred->gids, ngids * sizeof (uid_t));
else
*cred->gids = 0;
}
/* Create and return a protid for an existing peropen. The uid set is
UID (length NUIDS); the gid set is GID (length NGIDS). The node
PO->np must be locked. */
struct protid *
diskfs_make_protid (struct peropen *po, uid_t *uids, int nuids,
uid_t *gids, int ngids)
{
struct protid *cred = diskfs_start_protid (po);
diskfs_finish_protid (cred, uids, nuids, gids, ngids);
return cred;
}
|
