ip6tables.h revision a8658ca43fba82f7761f774f4daeb29b3e335053 
1#ifndef _IP6TABLES_USER_H
2#define _IP6TABLES_USER_H
3
4#include "iptables_common.h"
5#include "libiptc/libip6tc.h"
6
7/* Include file for additions: new matches and targets. */
8struct ip6tables_match
9{
10	struct ip6tables_match *next;
11
12	ip6t_chainlabel name;
13
14	const char *version;
15
16	/* Size of match data. */
17	size_t size;
18
19	/* Size of match data relevent for userspace comparison purposes */
20	size_t userspacesize;
21
22	/* Function which prints out usage message. */
23	void (*help)(void);
24
25	/* Initialize the match. */
26	void (*init)(struct ip6t_entry_match *m, unsigned int *nfcache);
27
28	/* Function which parses command options; returns true if it
29	   ate an option */
30	int (*parse)(int c, char **argv, int invert, unsigned int *flags,
31		     const struct ip6t_entry *entry,
32		     unsigned int *nfcache,
33		     struct ip6t_entry_match **match);
34
35	/* Final check; exit if not ok. */
36	void (*final_check)(unsigned int flags);
37
38	/* Prints out the match iff non-NULL: put space at end */
39	void (*print)(const struct ip6t_ip6 *ip,
40		      const struct ip6t_entry_match *match, int numeric);
41
42	/* Saves the union ipt_matchinfo in parsable form to stdout. */
43	void (*save)(const struct ip6t_ip6 *ip,
44		     const struct ip6t_entry_match *match);
45
46	/* Pointer to list of extra command-line options */
47	const struct option *extra_opts;
48
49	/* Ignore these men behind the curtain: */
50	unsigned int option_offset;
51	struct ip6t_entry_match *m;
52	unsigned int mflags;
53	unsigned int used;
54#ifdef NO_SHARED_LIBS
55	unsigned int loaded; /* simulate loading so options are merged properly */
56#endif
57};
58
59struct ip6tables_target
60{
61	struct ip6tables_target *next;
62
63	ip6t_chainlabel name;
64
65	const char *version;
66
67	/* Size of target data. */
68	size_t size;
69
70	/* Size of target data relevent for userspace comparison purposes */
71	size_t userspacesize;
72
73	/* Function which prints out usage message. */
74	void (*help)(void);
75
76	/* Initialize the target. */
77	void (*init)(struct ip6t_entry_target *t, unsigned int *nfcache);
78
79	/* Function which parses command options; returns true if it
80	   ate an option */
81	int (*parse)(int c, char **argv, int invert, unsigned int *flags,
82		     const struct ip6t_entry *entry,
83		     struct ip6t_entry_target **target);
84
85	/* Final check; exit if not ok. */
86	void (*final_check)(unsigned int flags);
87
88	/* Prints out the target iff non-NULL: put space at end */
89	void (*print)(const struct ip6t_ip6 *ip,
90		      const struct ip6t_entry_target *target, int numeric);
91
92	/* Saves the targinfo in parsable form to stdout. */
93	void (*save)(const struct ip6t_ip6 *ip,
94		     const struct ip6t_entry_target *target);
95
96	/* Pointer to list of extra command-line options */
97	struct option *extra_opts;
98
99	/* Ignore these men behind the curtain: */
100	unsigned int option_offset;
101	struct ip6t_entry_target *t;
102	unsigned int tflags;
103	unsigned int used;
104#ifdef NO_SHARED_LIBS
105	unsigned int loaded; /* simulate loading so options are merged properly */
106#endif
107};
108
109extern int line;
110
111/* Your shared library should call one of these. */
112extern void register_match6(struct ip6tables_match *me);
113extern void register_target6(struct ip6tables_target *me);
114
115extern int do_command6(int argc, char *argv[], char **table,
116		       ip6tc_handle_t *handle);
117/* Keeping track of external matches and targets: linked lists. */
118extern struct ip6tables_match *ip6tables_matches;
119extern struct ip6tables_target *ip6tables_targets;
120
121enum ip6t_tryload {
122	DONT_LOAD,
123	TRY_LOAD,
124	LOAD_MUST_SUCCEED
125};
126
127extern struct ip6tables_target *find_target(const char *name, enum ip6t_tryload);
128extern struct ip6tables_match *find_match(const char *name, enum ip6t_tryload);
129
130extern int for_each_chain(int (*fn)(const ip6t_chainlabel, int, ip6tc_handle_t *), int verbose, int builtinstoo, ip6tc_handle_t *handle);
131extern int flush_entries(const ip6t_chainlabel chain, int verbose, ip6tc_handle_t *handle);
132extern int delete_chain(const ip6t_chainlabel chain, int verbose, ip6tc_handle_t *handle);
133extern int ip6tables_insmod(const char *modname, const char *modprobe);
134
135#endif /*_IP6TABLES_USER_H*/
136