| /* |
| * 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 version 2 |
| * as published by the Free Software Foundation. |
| * |
| * 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 */ |
| unsigned int cache; /* cache mode */ |
| |
| 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, |
| }; |
| |
| /* possible values of ->cache */ |
| /* eventually support loose, tight, time, session, default always none */ |
| enum { |
| CACHE_NONE, /* default */ |
| CACHE_LOOSE, /* no consistency */ |
| }; |
| |
| 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 "" |
| |