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9e82cf6a EVH |
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 | |
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 | ||
24 | /* plan9 semantics are that created files are implicitly opened. | |
25 | * But linux semantics are that you call create, then open. | |
26 | * the plan9 approach is superior as it provides an atomic | |
27 | * open. | |
28 | * we track the create fid here. When the file is opened, if fidopen is | |
29 | * non-zero, we use the fid and can skip some steps. | |
30 | * there may be a better way to do this, but I don't know it. | |
31 | * one BAD way is to clunk the fid on create, then open it again: | |
32 | * you lose the atomicity of file open | |
33 | */ | |
34 | ||
35 | /* special case: | |
36 | * unlink calls remove, which is an implicit clunk. So we have to track | |
37 | * that kind of thing so that we don't try to clunk a dead fid. | |
38 | */ | |
39 | ||
40 | extern struct file_system_type v9fs_fs_type; | |
f5e54d6e | 41 | extern const struct address_space_operations v9fs_addr_operations; |
4b6f5d20 | 42 | extern const struct file_operations v9fs_file_operations; |
9b6533c9 | 43 | extern const struct file_operations v9fs_file_operations_dotl; |
4b6f5d20 | 44 | extern const struct file_operations v9fs_dir_operations; |
9b6533c9 | 45 | extern const struct file_operations v9fs_dir_operations_dotl; |
a488257c AV |
46 | extern const struct dentry_operations v9fs_dentry_operations; |
47 | extern const struct dentry_operations v9fs_cached_dentry_operations; | |
29236f4e AK |
48 | extern const struct file_operations v9fs_cached_file_operations; |
49 | extern const struct file_operations v9fs_cached_file_operations_dotl; | |
9e82cf6a | 50 | |
60e78d2c AK |
51 | #ifdef CONFIG_9P_FSCACHE |
52 | struct inode *v9fs_alloc_inode(struct super_block *sb); | |
53 | void v9fs_destroy_inode(struct inode *inode); | |
54 | #endif | |
55 | ||
9e82cf6a | 56 | struct inode *v9fs_get_inode(struct super_block *sb, int mode); |
5ffc0cb3 AK |
57 | int v9fs_init_inode(struct v9fs_session_info *v9ses, |
58 | struct inode *inode, int mode); | |
b57922d9 | 59 | void v9fs_evict_inode(struct inode *inode); |
bd238fb4 | 60 | ino_t v9fs_qid2ino(struct p9_qid *qid); |
51a87c55 | 61 | void v9fs_stat2inode(struct p9_wstat *, struct inode *, struct super_block *); |
f0853122 | 62 | void v9fs_stat2inode_dotl(struct p9_stat_dotl *, struct inode *); |
9e82cf6a EVH |
63 | int v9fs_dir_release(struct inode *inode, struct file *filp); |
64 | int v9fs_file_open(struct inode *inode, struct file *file); | |
51a87c55 | 65 | void v9fs_inode2stat(struct inode *inode, struct p9_wstat *stat); |
2e4bef41 | 66 | int v9fs_uflags2omode(int uflags, int extended); |
fbedadc1 EVH |
67 | |
68 | ssize_t v9fs_file_readn(struct file *, char *, char __user *, u32, u64); | |
17311779 | 69 | ssize_t v9fs_fid_readn(struct p9_fid *, char *, char __user *, u32, u64); |
7a4439c4 | 70 | void v9fs_blank_wstat(struct p9_wstat *wstat); |
22d8dcdf | 71 | int v9fs_vfs_setattr_dotl(struct dentry *, struct iattr *); |
b165d601 | 72 | int v9fs_file_fsync_dotl(struct file *filp, int datasync); |
17311779 AK |
73 | ssize_t v9fs_file_write_internal(struct inode *, struct p9_fid *, |
74 | const char __user *, size_t, loff_t *, int); | |
a099027c | 75 | #define P9_LOCK_TIMEOUT (30*HZ) |