1 /* Shared library add-on to ip6tables for condition match */
8 #include<linux/netfilter_ipv6/ip6_tables.h>
9 #include<linux/netfilter_ipv6/ip6t_condition.h>
15 printf("condition match v%s options:\n"
16 "--condition [!] filename "
17 "Match on boolean value stored in /proc file\n",
22 static struct option opts
[] = {
23 { .name
= "condition", .has_arg
= 1, .flag
= 0, .val
= 'X' },
28 parse(int c
, char **argv
, int invert
, unsigned int *flags
,
29 const struct ip6t_entry
*entry
, unsigned int *nfcache
,
30 struct ip6t_entry_match
**match
)
32 struct condition6_info
*info
=
33 (struct condition6_info
*) (*match
)->data
;
37 exit_error(PARAMETER_PROBLEM
,
38 "Can't specify multiple conditions");
40 check_inverse(optarg
, &invert
, &optind
, 0);
42 if (strlen(argv
[optind
- 1]) < CONDITION6_NAME_LEN
)
43 strcpy(info
->name
, argv
[optind
- 1]);
45 exit_error(PARAMETER_PROBLEM
,
46 "File name too long");
48 info
->invert
= invert
;
58 final_check(unsigned int flags
)
61 exit_error(PARAMETER_PROBLEM
,
62 "Condition match: must specify --condition");
67 print(const struct ip6t_ip6
*ip
,
68 const struct ip6t_entry_match
*match
, int numeric
)
70 const struct condition6_info
*info
=
71 (const struct condition6_info
*) match
->data
;
73 printf("condition %s%s ", (info
->invert
) ? "!" : "", info
->name
);
78 save(const struct ip6t_ip6
*ip
,
79 const struct ip6t_entry_match
*match
)
81 const struct condition6_info
*info
=
82 (const struct condition6_info
*) match
->data
;
84 printf("--condition %s\"%s\" ", (info
->invert
) ? "! " : "", info
->name
);
88 static struct ip6tables_match condition
= {
90 .version
= IPTABLES_VERSION
,
91 .size
= IP6T_ALIGN(sizeof(struct condition6_info
)),
92 .userspacesize
= IP6T_ALIGN(sizeof(struct condition6_info
)),
95 .final_check
= &final_check
,
105 register_match6(&condition
);