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git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - fs/9p/v9fs.h
4 * Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
5 * Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to:
19 * Free Software Foundation
20 * 51 Franklin Street, Fifth Floor
21 * Boston, MA 02111-1301 USA
26 * Idpool structure provides lock and id management
31 struct semaphore lock
;
36 * Session structure provides information for an opened session
40 struct v9fs_session_info
{
43 unsigned char extended
; /* set to 1 if we are using UNIX extensions */
44 unsigned char nodev
; /* set to 1 if no disable device mapping */
45 unsigned short port
; /* port to connect to */
46 unsigned short debug
; /* debug level */
47 unsigned short proto
; /* protocol to use */
48 unsigned int afid
; /* authentication fid */
49 unsigned int rfdno
; /* read file descriptor number */
50 unsigned int wfdno
; /* write file descriptor number */
53 char *name
; /* user name to mount as */
54 char *remotename
; /* name of remote hierarchy being mounted */
55 unsigned int uid
; /* default uid/muid for legacy support */
56 unsigned int gid
; /* default gid for legacy support */
59 struct v9fs_idpool fidpool
; /* The FID pool for file descriptors */
61 struct v9fs_transport
*transport
;
62 struct v9fs_mux_data
*mux
;
64 int inprogress
; /* session in progress => true */
65 int shutdown
; /* session shutting down. no more attaches. */
66 unsigned char session_hung
;
67 struct dentry
*debugfs_dir
;
70 /* possible values of ->proto */
77 extern struct dentry
*v9fs_debugfs_root
;
79 int v9fs_session_init(struct v9fs_session_info
*, const char *, char *);
80 struct v9fs_session_info
*v9fs_inode2v9ses(struct inode
*);
81 void v9fs_session_close(struct v9fs_session_info
*v9ses
);
82 int v9fs_get_idpool(struct v9fs_idpool
*p
);
83 void v9fs_put_idpool(int id
, struct v9fs_idpool
*p
);
84 int v9fs_check_idpool(int id
, struct v9fs_idpool
*p
);
85 void v9fs_session_cancel(struct v9fs_session_info
*v9ses
);
87 #define V9FS_MAGIC 0x01021997
89 /* other default globals */
91 #define V9FS_DEFUSER "nobody"
92 #define V9FS_DEFANAME ""
94 /* inital pool sizes for fids and tags */
95 #define V9FS_START_FIDS 8192
96 #define V9FS_START_TIDS 256