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Eric Van Hensbergen9e82cf62005-09-09 13:04:20 -07001/*
2 * V9FS definitions.
3 *
4 * Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
5 * Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
6 *
7 * This program is free software; you can redistribute it and/or modify
Eric Van Hensbergen42e8c502006-03-25 03:07:28 -08008 * it under the terms of the GNU General Public License version 2
9 * as published by the Free Software Foundation.
Eric Van Hensbergen9e82cf62005-09-09 13:04:20 -070010 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to:
18 * Free Software Foundation
19 * 51 Franklin Street, Fifth Floor
20 * Boston, MA 02111-1301 USA
21 *
22 */
23
24/*
25 * Idpool structure provides lock and id management
26 *
27 */
28
29struct v9fs_idpool {
30 struct semaphore lock;
31 struct idr pool;
32};
33
34/*
35 * Session structure provides information for an opened session
36 *
37 */
38
39struct v9fs_session_info {
40 /* options */
41 unsigned int maxdata;
42 unsigned char extended; /* set to 1 if we are using UNIX extensions */
43 unsigned char nodev; /* set to 1 if no disable device mapping */
44 unsigned short port; /* port to connect to */
45 unsigned short debug; /* debug level */
46 unsigned short proto; /* protocol to use */
47 unsigned int afid; /* authentication fid */
48 unsigned int rfdno; /* read file descriptor number */
49 unsigned int wfdno; /* write file descriptor number */
50
51
52 char *name; /* user name to mount as */
53 char *remotename; /* name of remote hierarchy being mounted */
54 unsigned int uid; /* default uid/muid for legacy support */
55 unsigned int gid; /* default gid for legacy support */
56
57 /* book keeping */
58 struct v9fs_idpool fidpool; /* The FID pool for file descriptors */
Eric Van Hensbergen9e82cf62005-09-09 13:04:20 -070059
Eric Van Hensbergen9e82cf62005-09-09 13:04:20 -070060 struct v9fs_transport *transport;
Latchesar Ionkov3cf64292006-01-08 01:04:58 -080061 struct v9fs_mux_data *mux;
Eric Van Hensbergen9e82cf62005-09-09 13:04:20 -070062
63 int inprogress; /* session in progress => true */
64 int shutdown; /* session shutting down. no more attaches. */
65 unsigned char session_hung;
Latchesar Ionkov3cf64292006-01-08 01:04:58 -080066 struct dentry *debugfs_dir;
Eric Van Hensbergen9e82cf62005-09-09 13:04:20 -070067};
68
69/* possible values of ->proto */
70enum {
71 PROTO_TCP,
72 PROTO_UNIX,
73 PROTO_FD,
74};
75
Latchesar Ionkov3cf64292006-01-08 01:04:58 -080076extern struct dentry *v9fs_debugfs_root;
77
Eric Van Hensbergen9e82cf62005-09-09 13:04:20 -070078int v9fs_session_init(struct v9fs_session_info *, const char *, char *);
79struct v9fs_session_info *v9fs_inode2v9ses(struct inode *);
80void v9fs_session_close(struct v9fs_session_info *v9ses);
81int v9fs_get_idpool(struct v9fs_idpool *p);
82void v9fs_put_idpool(int id, struct v9fs_idpool *p);
Latchesar Ionkov3cf64292006-01-08 01:04:58 -080083int v9fs_check_idpool(int id, struct v9fs_idpool *p);
Eric Van Hensbergen322b3292005-09-09 13:04:23 -070084void v9fs_session_cancel(struct v9fs_session_info *v9ses);
Eric Van Hensbergen9e82cf62005-09-09 13:04:20 -070085
86#define V9FS_MAGIC 0x01021997
87
88/* other default globals */
89#define V9FS_PORT 564
90#define V9FS_DEFUSER "nobody"
91#define V9FS_DEFANAME ""
92