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Eric Van Hensbergene69e7fe2005-09-09 13:04:18 -07001/*
2 * linux/fs/9p/vfs_dentry.c
3 *
4 * This file contians vfs dentry ops for the 9P2000 protocol.
5 *
6 * Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
7 * Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to:
21 * Free Software Foundation
22 * 51 Franklin Street, Fifth Floor
23 * Boston, MA 02111-1301 USA
24 *
25 */
26
27#include <linux/module.h>
28#include <linux/errno.h>
29#include <linux/fs.h>
30#include <linux/file.h>
31#include <linux/pagemap.h>
32#include <linux/stat.h>
33#include <linux/string.h>
34#include <linux/smp_lock.h>
35#include <linux/inet.h>
36#include <linux/namei.h>
37#include <linux/idr.h>
38
39#include "debug.h"
40#include "v9fs.h"
41#include "9p.h"
42#include "v9fs_vfs.h"
Eric Van Hensbergene69e7fe2005-09-09 13:04:18 -070043#include "fid.h"
44
45/**
Eric Van Hensbergen46f6dac2006-03-02 02:54:33 -080046 * v9fs_dentry_delete - called when dentry refcount equals 0
47 * @dentry: dentry in question
Eric Van Hensbergene69e7fe2005-09-09 13:04:18 -070048 *
Eric Van Hensbergen46f6dac2006-03-02 02:54:33 -080049 * By returning 1 here we should remove cacheing of unused
50 * dentry components.
Eric Van Hensbergene69e7fe2005-09-09 13:04:18 -070051 *
52 */
53
Eric Van Hensbergen46f6dac2006-03-02 02:54:33 -080054int v9fs_dentry_delete(struct dentry *dentry)
Eric Van Hensbergene69e7fe2005-09-09 13:04:18 -070055{
Eric Van Hensbergen46f6dac2006-03-02 02:54:33 -080056 dprintk(DEBUG_VFS, " dentry: %s (%p)\n", dentry->d_iname, dentry);
57 return 1;
Eric Van Hensbergene69e7fe2005-09-09 13:04:18 -070058}
59
60/**
61 * v9fs_dentry_release - called when dentry is going to be freed
62 * @dentry: dentry that is being release
63 *
64 */
65
66void v9fs_dentry_release(struct dentry *dentry)
67{
Latchesar Ionkov3cf64292006-01-08 01:04:58 -080068 int err;
69
Eric Van Hensbergene69e7fe2005-09-09 13:04:18 -070070 dprintk(DEBUG_VFS, " dentry: %s (%p)\n", dentry->d_iname, dentry);
71
72 if (dentry->d_fsdata != NULL) {
73 struct list_head *fid_list = dentry->d_fsdata;
74 struct v9fs_fid *temp = NULL;
75 struct v9fs_fid *current_fid = NULL;
Eric Van Hensbergene69e7fe2005-09-09 13:04:18 -070076
77 list_for_each_entry_safe(current_fid, temp, fid_list, list) {
Latchesar Ionkov3cf64292006-01-08 01:04:58 -080078 err = v9fs_t_clunk(current_fid->v9ses, current_fid->fid);
Eric Van Hensbergene69e7fe2005-09-09 13:04:18 -070079
Latchesar Ionkov3cf64292006-01-08 01:04:58 -080080 if (err < 0)
Latchesar Ionkov531b1092006-01-08 01:05:00 -080081 dprintk(DEBUG_ERROR, "clunk failed: %d name %s\n",
82 err, dentry->d_iname);
Eric Van Hensbergene69e7fe2005-09-09 13:04:18 -070083
Eric Van Hensbergene69e7fe2005-09-09 13:04:18 -070084 v9fs_fid_destroy(current_fid);
85 }
86
87 kfree(dentry->d_fsdata); /* free the list_head */
88 }
89}
90
91struct dentry_operations v9fs_dentry_operations = {
Eric Van Hensbergen46f6dac2006-03-02 02:54:33 -080092 .d_delete = v9fs_dentry_delete,
Eric Van Hensbergene69e7fe2005-09-09 13:04:18 -070093 .d_release = v9fs_dentry_release,
94};