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Diffstat (limited to 'fs/9p/v9fs.h')
| -rw-r--r-- | fs/9p/v9fs.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/fs/9p/v9fs.h b/fs/9p/v9fs.h new file mode 100644 index 00000000000..52203027b15 --- /dev/null +++ b/fs/9p/v9fs.h @@ -0,0 +1,105 @@ +/* + * 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_idpool tidpool; /* The TID pool for transactions ids */ + + /* transport information */ + struct v9fs_transport *transport; + + int inprogress; /* session in progress => true */ + int shutdown; /* session shutting down. no more attaches. */ + unsigned char session_hung; + + /* mux private data */ + struct v9fs_fcall *curfcall; + wait_queue_head_t read_wait; + struct completion fcread; + struct completion proccmpl; + struct task_struct *recvproc; + + spinlock_t muxlock; + struct list_head mux_fcalls; +}; + +/* possible values of ->proto */ +enum { + PROTO_TCP, + PROTO_UNIX, + PROTO_FD, +}; + +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_get_option(char *opts, char *name, char *buf, int buflen); +long long v9fs_get_int_option(char *opts, char *name, long long dflt); +int v9fs_parse_tcp_devname(const char *devname, char **addr, char **remotename); + +#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 |