89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
/*
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* V9FS definitions.
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*
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* Copyright (C) 2004-2008 by Eric Van Hensbergen <ericvh@gmail.com>
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* Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to:
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* Free Software Foundation
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* 51 Franklin Street, Fifth Floor
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* Boston, MA 02111-1301 USA
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*
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*/
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/*
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* Session structure provides information for an opened session
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*
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*/
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struct v9fs_session_info {
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/* options */
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unsigned char flags; /* session flags */
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unsigned char nodev; /* set to 1 if no disable device mapping */
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unsigned short debug; /* debug level */
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unsigned int afid; /* authentication fid */
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unsigned int cache; /* cache mode */
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char *options; /* copy of mount options */
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char *uname; /* user name to mount as */
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char *aname; /* name of remote hierarchy being mounted */
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unsigned int maxdata; /* max data for client interface */
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unsigned int dfltuid; /* default uid/muid for legacy support */
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unsigned int dfltgid; /* default gid for legacy support */
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u32 uid; /* if ACCESS_SINGLE, the uid that has access */
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struct p9_client *clnt; /* 9p client */
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struct dentry *debugfs_dir;
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};
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/* session flags */
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enum {
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V9FS_EXTENDED = 0x01, /* 9P2000.u */
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V9FS_ACCESS_MASK = 0x06, /* access mask */
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V9FS_ACCESS_SINGLE = 0x02, /* only one user can access the files */
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V9FS_ACCESS_USER = 0x04, /* attache per user */
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V9FS_ACCESS_ANY = 0x06, /* use the same attach for all users */
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};
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/* possible values of ->cache */
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/* eventually support loose, tight, time, session, default always none */
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enum {
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CACHE_NONE, /* default */
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CACHE_LOOSE, /* no consistency */
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};
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extern struct dentry *v9fs_debugfs_root;
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struct p9_fid *v9fs_session_init(struct v9fs_session_info *, const char *,
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char *);
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void v9fs_session_close(struct v9fs_session_info *v9ses);
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void v9fs_session_cancel(struct v9fs_session_info *v9ses);
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#define V9FS_MAGIC 0x01021997
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/* other default globals */
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#define V9FS_PORT 564
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#define V9FS_DEFUSER "nobody"
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#define V9FS_DEFANAME ""
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#define V9FS_DEFUID (-2)
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#define V9FS_DEFGID (-2)
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static inline struct v9fs_session_info *v9fs_inode2v9ses(struct inode *inode)
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{
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return (inode->i_sb->s_fs_info);
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}
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static inline int v9fs_extended(struct v9fs_session_info *v9ses)
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{
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return v9ses->flags & V9FS_EXTENDED;
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}
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