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1 office 1 /*
2 * netlink/cache.h Caching Module
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation version 2.1
7 * of the License.
8 *
9 * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
10 */
11  
12 #ifndef NETLINK_CACHE_H_
13 #define NETLINK_CACHE_H_
14  
15 #include <netlink/netlink.h>
16 #include <netlink/msg.h>
17 #include <netlink/utils.h>
18 #include <netlink/object.h>
19 #include <netlink/cache-api.h>
20  
21 #ifdef __cplusplus
22 extern "C" {
23 #endif
24  
25 struct nl_cache;
26  
27 typedef void (*change_func_t)(struct nl_cache *, struct nl_object *, int);
28  
29 /* Access Functions */
30 extern int nl_cache_nitems(struct nl_cache *);
31 extern int nl_cache_nitems_filter(struct nl_cache *,
32 struct nl_object *);
33 extern struct nl_cache_ops * nl_cache_get_ops(struct nl_cache *);
34 extern struct nl_object * nl_cache_get_first(struct nl_cache *);
35 extern struct nl_object * nl_cache_get_last(struct nl_cache *);
36 extern struct nl_object * nl_cache_get_next(struct nl_object *);
37 extern struct nl_object * nl_cache_get_prev(struct nl_object *);
38  
39 extern struct nl_cache * nl_cache_alloc(struct nl_cache_ops *);
40 extern int nl_cache_alloc_and_fill(struct nl_cache_ops *,
41 struct nl_sock *,
42 struct nl_cache **);
43 extern int nl_cache_alloc_name(const char *,
44 struct nl_cache **);
45 extern struct nl_cache * nl_cache_subset(struct nl_cache *,
46 struct nl_object *);
47 extern void nl_cache_clear(struct nl_cache *);
48 extern void nl_cache_free(struct nl_cache *);
49  
50 /* Cache modification */
51 extern int nl_cache_add(struct nl_cache *,
52 struct nl_object *);
53 extern int nl_cache_parse_and_add(struct nl_cache *,
54 struct nl_msg *);
55 extern void nl_cache_remove(struct nl_object *);
56 extern int nl_cache_refill(struct nl_sock *,
57 struct nl_cache *);
58 extern int nl_cache_pickup(struct nl_sock *,
59 struct nl_cache *);
60 extern int nl_cache_resync(struct nl_sock *,
61 struct nl_cache *,
62 change_func_t);
63 extern int nl_cache_include(struct nl_cache *,
64 struct nl_object *,
65 change_func_t);
66  
67 /* General */
68 extern int nl_cache_is_empty(struct nl_cache *);
69 extern void nl_cache_mark_all(struct nl_cache *);
70  
71 /* Dumping */
72 extern void nl_cache_dump(struct nl_cache *,
73 struct nl_dump_params *);
74 extern void nl_cache_dump_filter(struct nl_cache *,
75 struct nl_dump_params *,
76 struct nl_object *);
77  
78 /* Iterators */
79 #ifdef disabled
80 extern void nl_cache_foreach(struct nl_cache *,
81 void (*cb)(struct nl_object *,
82 void *),
83 void *arg);
84 extern void nl_cache_foreach_filter(struct nl_cache *,
85 struct nl_object *,
86 void (*cb)(struct
87 nl_object *,
88 void *),
89 void *arg);
90 #endif
91  
92 /* --- cache management --- */
93  
94 /* Cache type management */
95 extern struct nl_cache_ops * nl_cache_ops_lookup(const char *);
96 extern struct nl_cache_ops * nl_cache_ops_associate(int, int);
97 extern struct nl_msgtype * nl_msgtype_lookup(struct nl_cache_ops *, int);
98 extern void nl_cache_ops_foreach(void (*cb)(struct nl_cache_ops *, void *), void *);
99 extern int nl_cache_mngt_register(struct nl_cache_ops *);
100 extern int nl_cache_mngt_unregister(struct nl_cache_ops *);
101  
102 /* Global cache provisioning/requiring */
103 extern void nl_cache_mngt_provide(struct nl_cache *);
104 extern void nl_cache_mngt_unprovide(struct nl_cache *);
105 extern struct nl_cache * nl_cache_mngt_require(const char *);
106  
107 struct nl_cache_mngr;
108  
109 #define NL_AUTO_PROVIDE 1
110  
111 extern int nl_cache_mngr_alloc(struct nl_sock *,
112 int, int,
113 struct nl_cache_mngr **);
114 extern int nl_cache_mngr_add(struct nl_cache_mngr *,
115 const char *,
116 change_func_t,
117 struct nl_cache **);
118 extern int nl_cache_mngr_get_fd(struct nl_cache_mngr *);
119 extern int nl_cache_mngr_poll(struct nl_cache_mngr *,
120 int);
121 extern int nl_cache_mngr_data_ready(struct nl_cache_mngr *);
122 extern void nl_cache_mngr_free(struct nl_cache_mngr *);
123  
124 #ifdef __cplusplus
125 }
126 #endif
127  
128 #endif