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1 | /* |
2 | Copyright (C) 2010 Proxmox Server Solutions GmbH | |
3 | ||
4 | This software is written by Proxmox Server Solutions GmbH <support@proxmox.com> | |
5 | ||
6 | This program is free software: you can redistribute it and/or modify | |
7 | it under the terms of the GNU Affero General Public License as published by | |
8 | the Free Software Foundation, either version 3 of the License, or | |
9 | (at your option) any later version. | |
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 Affero General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Affero General Public License | |
17 | along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | ||
19 | Author: Dietmar Maurer <dietmar@proxmox.com> | |
20 | ||
21 | */ | |
22 | ||
23 | #ifndef _PVE_CFS_PLUG_H_ | |
24 | #define _PVE_CFS_PLUG_H_ | |
25 | ||
26 | #define FUSE_USE_VERSION 26 | |
27 | ||
28 | #include <errno.h> | |
29 | #include <fuse.h> | |
30 | #include <sys/types.h> | |
31 | #include <sys/stat.h> | |
32 | #include <unistd.h> | |
33 | ||
34 | #define PARAM_CHECK_ERRNO -EREMOTEIO | |
35 | ||
36 | typedef struct cfs_plug cfs_plug_t; | |
37 | ||
38 | struct cfs_operations { | |
39 | int (*getattr) (cfs_plug_t *, const char *, struct stat *); | |
40 | int (*readlink) (cfs_plug_t *, const char *, char *, size_t); | |
41 | int (*mkdir) (cfs_plug_t *, const char *, mode_t); | |
42 | int (*unlink) (cfs_plug_t *, const char *); | |
43 | int (*rmdir) (cfs_plug_t *, const char *); | |
44 | int (*rename) (cfs_plug_t *, const char *, const char *); | |
45 | int (*truncate) (cfs_plug_t *, const char *, off_t); | |
46 | int (*open) (cfs_plug_t *, const char *, struct fuse_file_info *); | |
47 | int (*read) (cfs_plug_t *, const char *, char *, size_t, off_t, | |
48 | struct fuse_file_info *); | |
49 | int (*write) (cfs_plug_t *, const char *, const char *, size_t, off_t, | |
50 | struct fuse_file_info *); | |
51 | int (*readdir) (cfs_plug_t *, const char *, void *, fuse_fill_dir_t, off_t, | |
52 | struct fuse_file_info *); | |
53 | int (*create) (cfs_plug_t *, const char *, mode_t, struct fuse_file_info *); | |
54 | int (*utimens) (cfs_plug_t *, const char *, const struct timespec tv[2]); | |
55 | int (*statfs) (cfs_plug_t *, const char *, struct statvfs *); | |
56 | }; | |
57 | ||
58 | struct cfs_plug { | |
59 | struct cfs_operations *ops; | |
60 | cfs_plug_t *(*lookup_plug)(cfs_plug_t *plug, char **path); | |
61 | void (*destroy_plug) (cfs_plug_t *plug); | |
62 | void (*start_workers) (cfs_plug_t *plug); | |
63 | void (*stop_workers) (cfs_plug_t *plug); | |
64 | ||
65 | char *name; | |
66 | }; | |
67 | ||
68 | typedef struct { | |
69 | cfs_plug_t plug; | |
70 | cfs_plug_t *base; | |
71 | GHashTable *entries; | |
72 | } cfs_plug_base_t; | |
73 | ||
74 | typedef struct { | |
75 | cfs_plug_t plug; | |
76 | char *symlink; | |
77 | } cfs_plug_link_t; | |
78 | ||
79 | typedef char *(*cfs_plug_func_udpate_data_fn_t)(cfs_plug_t *plug); | |
80 | typedef int (*cfs_plug_func_write_data_fn_t)( | |
81 | cfs_plug_t *plug, | |
82 | const char *buf, | |
83 | size_t size); | |
84 | ||
85 | typedef struct { | |
86 | cfs_plug_t plug; | |
87 | char *data; | |
88 | mode_t mode; | |
89 | cfs_plug_func_udpate_data_fn_t update_callback; | |
90 | cfs_plug_func_write_data_fn_t write_callback; | |
91 | } cfs_plug_func_t; | |
92 | ||
93 | cfs_plug_base_t *cfs_plug_base_new(const char *name, cfs_plug_t *base); | |
94 | void cfs_plug_base_insert(cfs_plug_base_t *base, cfs_plug_t *sub); | |
95 | ||
96 | cfs_plug_link_t *cfs_plug_link_new(const char *name, const char *symlink); | |
97 | cfs_plug_func_t *cfs_plug_func_new( | |
98 | const char *name, | |
99 | mode_t mode, | |
100 | cfs_plug_func_udpate_data_fn_t update_callback, | |
101 | cfs_plug_func_write_data_fn_t write_callback); | |
102 | ||
103 | ||
104 | #endif /* _PVE_CFS_PLUG_H_ */ |