forked from Minki/linux
8a0dc95fd9
This merges the mux.c (including the connection interface) with trans_fd in preparation for transport API changes. Ultimately, trans_fd will need to be rewritten to clean it up and simplify the implementation, but this reorganization is viewed as the first step. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
/*
|
|
* V9FS definitions.
|
|
*
|
|
* Copyright (C) 2004-2008 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
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Session structure provides information for an opened session
|
|
*
|
|
*/
|
|
|
|
struct v9fs_session_info {
|
|
/* options */
|
|
unsigned char flags; /* session flags */
|
|
unsigned char nodev; /* set to 1 if no disable device mapping */
|
|
unsigned short debug; /* debug level */
|
|
unsigned int afid; /* authentication fid */
|
|
unsigned int cache; /* cache mode */
|
|
|
|
char *options; /* copy of mount options */
|
|
char *uname; /* user name to mount as */
|
|
char *aname; /* name of remote hierarchy being mounted */
|
|
unsigned int maxdata; /* max data for client interface */
|
|
unsigned int dfltuid; /* default uid/muid for legacy support */
|
|
unsigned int dfltgid; /* default gid for legacy support */
|
|
u32 uid; /* if ACCESS_SINGLE, the uid that has access */
|
|
struct p9_client *clnt; /* 9p client */
|
|
struct dentry *debugfs_dir;
|
|
};
|
|
|
|
/* session flags */
|
|
enum {
|
|
V9FS_EXTENDED = 0x01, /* 9P2000.u */
|
|
V9FS_ACCESS_MASK = 0x06, /* access mask */
|
|
V9FS_ACCESS_SINGLE = 0x02, /* only one user can access the files */
|
|
V9FS_ACCESS_USER = 0x04, /* attache per user */
|
|
V9FS_ACCESS_ANY = 0x06, /* use the same attach for all users */
|
|
};
|
|
|
|
/* 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;
|
|
|
|
struct p9_fid *v9fs_session_init(struct v9fs_session_info *, const char *,
|
|
char *);
|
|
void v9fs_session_close(struct v9fs_session_info *v9ses);
|
|
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 ""
|
|
#define V9FS_DEFUID (-2)
|
|
#define V9FS_DEFGID (-2)
|
|
|
|
static inline struct v9fs_session_info *v9fs_inode2v9ses(struct inode *inode)
|
|
{
|
|
return (inode->i_sb->s_fs_info);
|
|
}
|
|
|
|
static inline int v9fs_extended(struct v9fs_session_info *v9ses)
|
|
{
|
|
return v9ses->flags & V9FS_EXTENDED;
|
|
}
|