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
|
/*
Copyright (C) 1994, 1996, 1997 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 <sys/file.h>
#include "priv.h"
/* Decrement the reference count on a peropen structure. */
void
diskfs_release_peropen (struct peropen *po)
{
mutex_lock (&po->np->lock);
if (--po->refcnt)
{
mutex_unlock (&po->np->lock);
return;
}
if (po->root_parent)
mach_port_deallocate (mach_task_self (), po->root_parent);
if (po->shadow_root && po->shadow_root != po->np)
{
mutex_lock (&po->shadow_root->lock);
diskfs_nput (po->shadow_root);
}
if (po->shadow_root_parent)
mach_port_deallocate (mach_task_self (), po->shadow_root_parent);
if (po->lock_status != LOCK_UN)
fshelp_acquire_lock (&po->np->userlock, &po->lock_status,
&po->np->lock, LOCK_UN);
diskfs_nput (po->np);
free (po);
}
|
