1 /* 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 8 * it under the terms of the GNU General Public License version 2 9 * as published by the Free Software Foundation. 10 * 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 * Session structure provides information for an opened session 26 * 27 */ 28 29 struct v9fs_session_info { 30 /* options */ 31 unsigned int maxdata; 32 unsigned char extended; /* set to 1 if we are using UNIX extensions */ 33 unsigned char nodev; /* set to 1 if no disable device mapping */ 34 unsigned short port; /* port to connect to */ 35 unsigned short debug; /* debug level */ 36 unsigned short proto; /* protocol to use */ 37 unsigned int afid; /* authentication fid */ 38 unsigned int rfdno; /* read file descriptor number */ 39 unsigned int wfdno; /* write file descriptor number */ 40 unsigned int cache; /* cache mode */ 41 42 char *name; /* user name to mount as */ 43 char *remotename; /* name of remote hierarchy being mounted */ 44 unsigned int uid; /* default uid/muid for legacy support */ 45 unsigned int gid; /* default gid for legacy support */ 46 47 struct p9_client *clnt; /* 9p client */ 48 struct dentry *debugfs_dir; 49 }; 50 51 /* possible values of ->proto */ 52 enum { 53 PROTO_TCP, 54 PROTO_UNIX, 55 PROTO_FD, 56 PROTO_PCI, 57 }; 58 59 /* possible values of ->cache */ 60 /* eventually support loose, tight, time, session, default always none */ 61 enum { 62 CACHE_NONE, /* default */ 63 CACHE_LOOSE, /* no consistency */ 64 }; 65 66 extern struct dentry *v9fs_debugfs_root; 67 68 struct p9_fid *v9fs_session_init(struct v9fs_session_info *, const char *, 69 char *); 70 void v9fs_session_close(struct v9fs_session_info *v9ses); 71 void v9fs_session_cancel(struct v9fs_session_info *v9ses); 72 73 #define V9FS_MAGIC 0x01021997 74 75 /* other default globals */ 76 #define V9FS_PORT 564 77 #define V9FS_DEFUSER "nobody" 78 #define V9FS_DEFANAME "" 79 80 static inline struct v9fs_session_info *v9fs_inode2v9ses(struct inode *inode) 81 { 82 return (inode->i_sb->s_fs_info); 83 } 84