2 * Shared library add-on to iptables to add SECMARK target support.
4 * Based on the MARK target.
8 * Copyright (C) 2006 Red Hat, Inc., James Morris <jmorris@redhat.com>
14 #include <ip6tables.h>
15 #include <linux/netfilter/xt_SECMARK.h>
17 #define PFX "SECMARK target: "
19 static void help(void)
22 "SECMARK target v%s options:\n"
23 " --selctx value Set the SELinux security context\n"
28 static struct option opts[] = {
29 { "selctx", 1, 0, '1' },
33 /* Initialize the target. */
34 static void init(struct ip6t_entry_target *t, unsigned int *nfcache)
38 * Function which parses command options; returns true if it
41 static int parse(int c, char **argv, int invert, unsigned int *flags,
42 const struct ip6t_entry *entry, struct ip6t_entry_target **target)
44 struct xt_secmark_target_info *info =
45 (struct xt_secmark_target_info*)(*target)->data;
49 if (*flags & SECMARK_MODE_SEL)
50 exit_error(PARAMETER_PROBLEM, PFX
51 "Can't specify --selctx twice");
52 info->mode = SECMARK_MODE_SEL;
54 if (strlen(optarg) > SECMARK_SELCTX_MAX-1)
55 exit_error(PARAMETER_PROBLEM, PFX
56 "Maximum length %u exceeded by --selctx"
58 SECMARK_SELCTX_MAX-1, strlen(optarg));
60 strcpy(info->u.sel.selctx, optarg);
61 *flags |= SECMARK_MODE_SEL;
70 static void final_check(unsigned int flags)
73 exit_error(PARAMETER_PROBLEM, PFX "parameter required");
76 static void print_secmark(struct xt_secmark_target_info *info)
79 case SECMARK_MODE_SEL:
80 printf("selctx %s ", info->u.sel.selctx);\
84 exit_error(OTHER_PROBLEM, PFX "invalid mode %hhu\n", info->mode);
88 static void print(const struct ip6t_ip6 *ip,
89 const struct ip6t_entry_target *target, int numeric)
91 struct xt_secmark_target_info *info =
92 (struct xt_secmark_target_info*)(target)->data;
98 /* Saves the target info in parsable form to stdout. */
99 static void save(const struct ip6t_ip6 *ip, const struct ip6t_entry_target *target)
101 struct xt_secmark_target_info *info =
102 (struct xt_secmark_target_info*)target->data;
108 static struct ip6tables_target secmark = {
110 .version = IPTABLES_VERSION,
111 .size = IP6T_ALIGN(sizeof(struct xt_secmark_target_info)),
112 .userspacesize = IP6T_ALIGN(sizeof(struct xt_secmark_target_info)),
116 .final_check = &final_check,
124 register_target6(&secmark);