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
|
/*
Copyright (C) 1994,97,99,2001,02 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 <sys/file.h>
/* Create and return a new peropen structure on node NP with open
flags FLAGS. */
error_t
diskfs_make_peropen (struct node *np, int flags, struct peropen *context,
struct peropen **ppo)
{
struct peropen *po = *ppo = malloc (sizeof (struct peropen));
if (! po)
return ENOMEM;
po->filepointer = 0;
po->lock_status = LOCK_UN;
refcount_init (&po->refcnt, 0);
po->openstat = flags;
po->np = np;
po->path = NULL;
if (context)
{
if (context->path)
{
po->path = strdup (context->path);
if (! po->path)
return ENOMEM;
}
po->root_parent = context->root_parent;
if (po->root_parent != MACH_PORT_NULL)
mach_port_mod_refs (mach_task_self (), po->root_parent,
MACH_PORT_RIGHT_SEND, 1);
po->shadow_root = context->shadow_root;
if (po->shadow_root)
diskfs_nref (po->shadow_root);
po->shadow_root_parent = context->shadow_root_parent;
if (po->shadow_root_parent != MACH_PORT_NULL)
mach_port_mod_refs (mach_task_self (), po->shadow_root_parent,
MACH_PORT_RIGHT_SEND, 1);
}
else
{
po->root_parent = MACH_PORT_NULL;
po->shadow_root_parent = MACH_PORT_NULL;
po->shadow_root = _diskfs_chroot_directory ? diskfs_root_node : 0;
}
diskfs_nref (np);
return 0;
}
|
