Commit | Line | Data |
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9e82cf6a EVH |
1 | /* |
2 | * V9FS definitions. | |
3 | * | |
8a0dc95f | 4 | * Copyright (C) 2004-2008 by Eric Van Hensbergen <ericvh@gmail.com> |
9e82cf6a EVH |
5 | * Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov> |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
42e8c509 EVH |
8 | * it under the terms of the GNU General Public License version 2 |
9 | * as published by the Free Software Foundation. | |
9e82cf6a EVH |
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 | ||
9e82cf6a EVH |
24 | /* |
25 | * Session structure provides information for an opened session | |
26 | * | |
27 | */ | |
28 | ||
29 | struct v9fs_session_info { | |
30 | /* options */ | |
2405669b | 31 | unsigned char flags; /* session flags */ |
9e82cf6a | 32 | unsigned char nodev; /* set to 1 if no disable device mapping */ |
9e82cf6a | 33 | unsigned short debug; /* debug level */ |
9e82cf6a | 34 | unsigned int afid; /* authentication fid */ |
e03abc0c | 35 | unsigned int cache; /* cache mode */ |
9e82cf6a | 36 | |
a80d923e | 37 | char *options; /* copy of mount options */ |
ba17674f LI |
38 | char *uname; /* user name to mount as */ |
39 | char *aname; /* name of remote hierarchy being mounted */ | |
8a0dc95f | 40 | unsigned int maxdata; /* max data for client interface */ |
bd32b82d LI |
41 | unsigned int dfltuid; /* default uid/muid for legacy support */ |
42 | unsigned int dfltgid; /* default gid for legacy support */ | |
ba17674f | 43 | u32 uid; /* if ACCESS_SINGLE, the uid that has access */ |
bd238fb4 | 44 | struct p9_client *clnt; /* 9p client */ |
3cf6429a | 45 | struct dentry *debugfs_dir; |
9e82cf6a EVH |
46 | }; |
47 | ||
2405669b LI |
48 | /* session flags */ |
49 | enum { | |
ba17674f LI |
50 | V9FS_EXTENDED = 0x01, /* 9P2000.u */ |
51 | V9FS_ACCESS_MASK = 0x06, /* access mask */ | |
52 | V9FS_ACCESS_SINGLE = 0x02, /* only one user can access the files */ | |
53 | V9FS_ACCESS_USER = 0x04, /* attache per user */ | |
54 | V9FS_ACCESS_ANY = 0x06, /* use the same attach for all users */ | |
2405669b LI |
55 | }; |
56 | ||
e03abc0c EVH |
57 | /* possible values of ->cache */ |
58 | /* eventually support loose, tight, time, session, default always none */ | |
59 | enum { | |
60 | CACHE_NONE, /* default */ | |
61 | CACHE_LOOSE, /* no consistency */ | |
62 | }; | |
63 | ||
3cf6429a LI |
64 | extern struct dentry *v9fs_debugfs_root; |
65 | ||
bd238fb4 LI |
66 | struct p9_fid *v9fs_session_init(struct v9fs_session_info *, const char *, |
67 | char *); | |
9e82cf6a | 68 | void v9fs_session_close(struct v9fs_session_info *v9ses); |
322b329a | 69 | void v9fs_session_cancel(struct v9fs_session_info *v9ses); |
9e82cf6a EVH |
70 | |
71 | #define V9FS_MAGIC 0x01021997 | |
72 | ||
73 | /* other default globals */ | |
bd32b82d | 74 | #define V9FS_PORT 564 |
9e82cf6a EVH |
75 | #define V9FS_DEFUSER "nobody" |
76 | #define V9FS_DEFANAME "" | |
bd32b82d LI |
77 | #define V9FS_DEFUID (-2) |
78 | #define V9FS_DEFGID (-2) | |
9e82cf6a | 79 | |
bd238fb4 LI |
80 | static inline struct v9fs_session_info *v9fs_inode2v9ses(struct inode *inode) |
81 | { | |
82 | return (inode->i_sb->s_fs_info); | |
83 | } | |
2405669b LI |
84 | |
85 | static inline int v9fs_extended(struct v9fs_session_info *v9ses) | |
86 | { | |
87 | return v9ses->flags & V9FS_EXTENDED; | |
88 | } |