diff options
author | Eric Van Hensbergen <ericvh@gmail.com> | 2005-09-09 16:04:20 -0400 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-09 16:57:56 -0400 |
commit | 9e82cf6a802a72f0f447eb4c76d6a3fc8736a31d (patch) | |
tree | 69bab629bd530930470fded8f04ca57566680668 /fs/9p/v9fs_vfs.h | |
parent | 2bad8471511ce5cc3ea90d0940622bd4b56b9cce (diff) |
[PATCH] v9fs: VFS superblock operations and glue
This part of the patch contains VFS superblock and mapping code.
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/9p/v9fs_vfs.h')
-rw-r--r-- | fs/9p/v9fs_vfs.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/fs/9p/v9fs_vfs.h b/fs/9p/v9fs_vfs.h new file mode 100644 index 000000000000..2f2cea7ee3e7 --- /dev/null +++ b/fs/9p/v9fs_vfs.h | |||
@@ -0,0 +1,53 @@ | |||
1 | /* | ||
2 | * V9FS VFS extensions. | ||
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 | /* plan9 semantics are that created files are implicitly opened. | ||
26 | * But linux semantics are that you call create, then open. | ||
27 | * the plan9 approach is superior as it provides an atomic | ||
28 | * open. | ||
29 | * we track the create fid here. When the file is opened, if fidopen is | ||
30 | * non-zero, we use the fid and can skip some steps. | ||
31 | * there may be a better way to do this, but I don't know it. | ||
32 | * one BAD way is to clunk the fid on create, then open it again: | ||
33 | * you lose the atomicity of file open | ||
34 | */ | ||
35 | |||
36 | /* special case: | ||
37 | * unlink calls remove, which is an implicit clunk. So we have to track | ||
38 | * that kind of thing so that we don't try to clunk a dead fid. | ||
39 | */ | ||
40 | |||
41 | extern struct file_system_type v9fs_fs_type; | ||
42 | extern struct file_operations v9fs_file_operations; | ||
43 | extern struct file_operations v9fs_dir_operations; | ||
44 | extern struct dentry_operations v9fs_dentry_operations; | ||
45 | |||
46 | struct inode *v9fs_get_inode(struct super_block *sb, int mode); | ||
47 | ino_t v9fs_qid2ino(struct v9fs_qid *qid); | ||
48 | void v9fs_mistat2inode(struct v9fs_stat *, struct inode *, | ||
49 | struct super_block *); | ||
50 | int v9fs_dir_release(struct inode *inode, struct file *filp); | ||
51 | int v9fs_file_open(struct inode *inode, struct file *file); | ||
52 | void v9fs_inode2mistat(struct inode *inode, struct v9fs_stat *mistat); | ||
53 | void v9fs_dentry_release(struct dentry *); | ||