| Eric Van Hensbergen | 9e82cf6 | 2005-09-09 13:04:20 -0700 | [diff] [blame] | 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 as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 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. |
| 16 | * |
| 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 |
| 22 | * |
| 23 | */ |
| 24 | |
| 25 | /* |
| 26 | * Idpool structure provides lock and id management |
| 27 | * |
| 28 | */ |
| 29 | |
| 30 | struct v9fs_idpool { |
| 31 | struct semaphore lock; |
| 32 | struct idr pool; |
| 33 | }; |
| 34 | |
| 35 | /* |
| 36 | * Session structure provides information for an opened session |
| 37 | * |
| 38 | */ |
| 39 | |
| 40 | struct v9fs_session_info { |
| 41 | /* options */ |
| 42 | unsigned int maxdata; |
| 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 */ |
| 51 | |
| 52 | |
| 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 */ |
| 57 | |
| 58 | /* book keeping */ |
| 59 | struct v9fs_idpool fidpool; /* The FID pool for file descriptors */ |
| 60 | struct v9fs_idpool tidpool; /* The TID pool for transactions ids */ |
| 61 | |
| 62 | /* transport information */ |
| 63 | struct v9fs_transport *transport; |
| 64 | |
| 65 | int inprogress; /* session in progress => true */ |
| 66 | int shutdown; /* session shutting down. no more attaches. */ |
| 67 | unsigned char session_hung; |
| 68 | |
| 69 | /* mux private data */ |
| 70 | struct v9fs_fcall *curfcall; |
| 71 | wait_queue_head_t read_wait; |
| 72 | struct completion fcread; |
| 73 | struct completion proccmpl; |
| 74 | struct task_struct *recvproc; |
| 75 | |
| 76 | spinlock_t muxlock; |
| 77 | struct list_head mux_fcalls; |
| 78 | }; |
| 79 | |
| 80 | /* possible values of ->proto */ |
| 81 | enum { |
| 82 | PROTO_TCP, |
| 83 | PROTO_UNIX, |
| 84 | PROTO_FD, |
| 85 | }; |
| 86 | |
| 87 | int v9fs_session_init(struct v9fs_session_info *, const char *, char *); |
| 88 | struct v9fs_session_info *v9fs_inode2v9ses(struct inode *); |
| 89 | void v9fs_session_close(struct v9fs_session_info *v9ses); |
| 90 | int v9fs_get_idpool(struct v9fs_idpool *p); |
| 91 | void v9fs_put_idpool(int id, struct v9fs_idpool *p); |
| Eric Van Hensbergen | 322b329 | 2005-09-09 13:04:23 -0700 | [diff] [blame] | 92 | void v9fs_session_cancel(struct v9fs_session_info *v9ses); |
| Eric Van Hensbergen | 9e82cf6 | 2005-09-09 13:04:20 -0700 | [diff] [blame] | 93 | |
| 94 | #define V9FS_MAGIC 0x01021997 |
| 95 | |
| 96 | /* other default globals */ |
| 97 | #define V9FS_PORT 564 |
| 98 | #define V9FS_DEFUSER "nobody" |
| 99 | #define V9FS_DEFANAME "" |
| 100 | |
| 101 | /* inital pool sizes for fids and tags */ |
| 102 | #define V9FS_START_FIDS 8192 |
| 103 | #define V9FS_START_TIDS 256 |