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3ed8491c EVH |
1 | /* |
2 | * V9FS FID Management | |
3 | * | |
4 | * Copyright (C) 2005 by Eric Van Hensbergen <ericvh@gmail.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
42e8c509 EVH |
7 | * it under the terms of the GNU General Public License version 2 |
8 | * as published by the Free Software Foundation. | |
3ed8491c EVH |
9 | * |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to: | |
17 | * Free Software Foundation | |
18 | * 51 Franklin Street, Fifth Floor | |
19 | * Boston, MA 02111-1301 USA | |
20 | * | |
21 | */ | |
22 | ||
23 | #include <linux/list.h> | |
24 | ||
25 | #define FID_OP 0 | |
26 | #define FID_WALK 1 | |
0b8dd177 | 27 | #define FID_CREATE 2 |
3ed8491c EVH |
28 | |
29 | struct v9fs_fid { | |
30 | struct list_head list; /* list of fids associated with a dentry */ | |
31 | struct list_head active; /* XXX - debug */ | |
32 | ||
da977b2c EVH |
33 | struct semaphore lock; |
34 | ||
3ed8491c EVH |
35 | u32 fid; |
36 | unsigned char fidopen; /* set when fid is opened */ | |
3ed8491c EVH |
37 | unsigned char fidclunked; /* set when fid has already been clunked */ |
38 | ||
39 | struct v9fs_qid qid; | |
40 | u32 iounit; | |
41 | ||
42 | /* readdir stuff */ | |
43 | int rdir_fpos; | |
44 | loff_t rdir_pos; | |
45 | struct v9fs_fcall *rdir_fcall; | |
46 | ||
47 | /* management stuff */ | |
3ed8491c EVH |
48 | uid_t uid; /* user associated with this fid */ |
49 | ||
50 | /* private data */ | |
51 | struct file *filp; /* backpointer to File struct for open files */ | |
52 | struct v9fs_session_info *v9ses; /* session info for this FID */ | |
53 | }; | |
54 | ||
0b8dd177 LI |
55 | struct v9fs_fid *v9fs_fid_lookup(struct dentry *dentry); |
56 | struct v9fs_fid *v9fs_fid_get_created(struct dentry *); | |
3ed8491c | 57 | void v9fs_fid_destroy(struct v9fs_fid *fid); |
6a3124a3 LI |
58 | struct v9fs_fid *v9fs_fid_create(struct v9fs_session_info *, int fid); |
59 | int v9fs_fid_insert(struct v9fs_fid *fid, struct dentry *dentry); | |
da977b2c EVH |
60 | struct v9fs_fid *v9fs_fid_clone(struct dentry *dentry); |
61 | void v9fs_fid_clunk(struct v9fs_session_info *v9ses, struct v9fs_fid *fid); | |
62 |