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 * Idpool structure provides lock and id management 26 * 27 */ 28 29 struct 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 39 struct 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 */ 59 60 struct v9fs_transport *transport; 61 struct v9fs_mux_data *mux; 62 63 int inprogress; /* session in progress => true */ 64 int shutdown; /* session shutting down. no more attaches. */ 65 unsigned char session_hung; 66 struct dentry *debugfs_dir; 67 }; 68 69 /* possible values of ->proto */ 70 enum { 71 PROTO_TCP, 72 PROTO_UNIX, 73 PROTO_FD, 74 }; 75 76 extern struct dentry *v9fs_debugfs_root; 77 78 int v9fs_session_init(struct v9fs_session_info *, const char *, char *); 79 struct v9fs_session_info *v9fs_inode2v9ses(struct inode *); 80 void v9fs_session_close(struct v9fs_session_info *v9ses); 81 int v9fs_get_idpool(struct v9fs_idpool *p); 82 void v9fs_put_idpool(int id, struct v9fs_idpool *p); 83 int v9fs_check_idpool(int id, struct v9fs_idpool *p); 84 void v9fs_session_cancel(struct v9fs_session_info *v9ses); 85 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 93