3cf6429a26
New multiplexer implementation. Decreases the number of kernel threads required. Better handling when the user process receives a signal. Signed-off-by: Latchesar Ionkov <lucho@ionkov.net> Cc: Eric Van Hensbergen <ericvh@ericvh.myip.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
97 lines
2.8 KiB
C
97 lines
2.8 KiB
C
/*
|
|
* V9FS definitions.
|
|
*
|
|
* Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
|
|
* Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
|
|
*
|
|
* 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 of the License, 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:
|
|
* Free Software Foundation
|
|
* 51 Franklin Street, Fifth Floor
|
|
* Boston, MA 02111-1301 USA
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Idpool structure provides lock and id management
|
|
*
|
|
*/
|
|
|
|
struct v9fs_idpool {
|
|
struct semaphore lock;
|
|
struct idr pool;
|
|
};
|
|
|
|
/*
|
|
* Session structure provides information for an opened session
|
|
*
|
|
*/
|
|
|
|
struct v9fs_session_info {
|
|
/* options */
|
|
unsigned int maxdata;
|
|
unsigned char extended; /* set to 1 if we are using UNIX extensions */
|
|
unsigned char nodev; /* set to 1 if no disable device mapping */
|
|
unsigned short port; /* port to connect to */
|
|
unsigned short debug; /* debug level */
|
|
unsigned short proto; /* protocol to use */
|
|
unsigned int afid; /* authentication fid */
|
|
unsigned int rfdno; /* read file descriptor number */
|
|
unsigned int wfdno; /* write file descriptor number */
|
|
|
|
|
|
char *name; /* user name to mount as */
|
|
char *remotename; /* name of remote hierarchy being mounted */
|
|
unsigned int uid; /* default uid/muid for legacy support */
|
|
unsigned int gid; /* default gid for legacy support */
|
|
|
|
/* book keeping */
|
|
struct v9fs_idpool fidpool; /* The FID pool for file descriptors */
|
|
|
|
struct v9fs_transport *transport;
|
|
struct v9fs_mux_data *mux;
|
|
|
|
int inprogress; /* session in progress => true */
|
|
int shutdown; /* session shutting down. no more attaches. */
|
|
unsigned char session_hung;
|
|
struct dentry *debugfs_dir;
|
|
};
|
|
|
|
/* possible values of ->proto */
|
|
enum {
|
|
PROTO_TCP,
|
|
PROTO_UNIX,
|
|
PROTO_FD,
|
|
};
|
|
|
|
extern struct dentry *v9fs_debugfs_root;
|
|
|
|
int v9fs_session_init(struct v9fs_session_info *, const char *, char *);
|
|
struct v9fs_session_info *v9fs_inode2v9ses(struct inode *);
|
|
void v9fs_session_close(struct v9fs_session_info *v9ses);
|
|
int v9fs_get_idpool(struct v9fs_idpool *p);
|
|
void v9fs_put_idpool(int id, struct v9fs_idpool *p);
|
|
int v9fs_check_idpool(int id, struct v9fs_idpool *p);
|
|
void v9fs_session_cancel(struct v9fs_session_info *v9ses);
|
|
|
|
#define V9FS_MAGIC 0x01021997
|
|
|
|
/* other default globals */
|
|
#define V9FS_PORT 564
|
|
#define V9FS_DEFUSER "nobody"
|
|
#define V9FS_DEFANAME ""
|
|
|
|
/* inital pool sizes for fids and tags */
|
|
#define V9FS_START_FIDS 8192
|
|
#define V9FS_START_TIDS 256
|