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/*
* Shared library add-on to iptables to add SECMARK target support.
*
* Based on the MARK target.
*
* Copyright (C) 2006 Red Hat, Inc., James Morris <jmorris@redhat.com>
*/
#include <stdio.h>
#include <xtables.h>
#include <linux/netfilter/xt_SECMARK.h>
#define PFX "SECMARK target: "
enum {
O_SELCTX = 0,
};
static void SECMARK_help(void)
{
printf(
"SECMARK target options:\n"
" --selctx value Set the SELinux security context\n");
}
static const struct xt_option_entry SECMARK_opts[] = {
{.name = "selctx", .id = O_SELCTX, .type = XTTYPE_STRING,
.flags = XTOPT_MAND | XTOPT_PUT,
XTOPT_POINTER(struct xt_secmark_target_info, secctx)},
XTOPT_TABLEEND,
};
static const struct xt_option_entry SECMARK_opts_v1[] = {
{.name = "selctx", .id = O_SELCTX, .type = XTTYPE_STRING,
.flags = XTOPT_MAND | XTOPT_PUT,
XTOPT_POINTER(struct xt_secmark_target_info_v1, secctx)},
XTOPT_TABLEEND,
};
static void SECMARK_parse(struct xt_option_call *cb)
{
struct xt_secmark_target_info *info = cb->data;
xtables_option_parse(cb);
info->mode = SECMARK_MODE_SEL;
}
static void SECMARK_parse_v1(struct xt_option_call *cb)
{
struct xt_secmark_target_info_v1 *info = cb->data;
xtables_option_parse(cb);
info->mode = SECMARK_MODE_SEL;
}
static void print_secmark(__u8 mode, const char *secctx)
{
switch (mode) {
case SECMARK_MODE_SEL:
printf("selctx %s", secctx);
break;
default:
xtables_error(OTHER_PROBLEM, PFX "invalid mode %hhu\n", mode);
}
}
static void SECMARK_print(const void *ip, const struct xt_entry_target *target,
int numeric)
{
const struct xt_secmark_target_info *info =
(struct xt_secmark_target_info*)(target)->data;
printf(" SECMARK ");
print_secmark(info->mode, info->secctx);
}
static void SECMARK_print_v1(const void *ip,
const struct xt_entry_target *target, int numeric)
{
const struct xt_secmark_target_info_v1 *info =
(struct xt_secmark_target_info_v1 *)(target)->data;
printf(" SECMARK ");
print_secmark(info->mode, info->secctx);
}
static void SECMARK_save(const void *ip, const struct xt_entry_target *target)
{
const struct xt_secmark_target_info *info =
(struct xt_secmark_target_info*)target->data;
printf(" --");
print_secmark(info->mode, info->secctx);
}
static void SECMARK_save_v1(const void *ip,
const struct xt_entry_target *target)
{
const struct xt_secmark_target_info_v1 *info =
(struct xt_secmark_target_info_v1 *)target->data;
printf(" --");
print_secmark(info->mode, info->secctx);
}
static struct xtables_target secmark_tg_reg[] = {
{
.family = NFPROTO_UNSPEC,
.name = "SECMARK",
.version = XTABLES_VERSION,
.revision = 0,
.size = XT_ALIGN(sizeof(struct xt_secmark_target_info)),
.userspacesize = XT_ALIGN(sizeof(struct xt_secmark_target_info)),
.help = SECMARK_help,
.print = SECMARK_print,
.save = SECMARK_save,
.x6_parse = SECMARK_parse,
.x6_options = SECMARK_opts,
},
{
.family = NFPROTO_UNSPEC,
.name = "SECMARK",
.version = XTABLES_VERSION,
.revision = 1,
.size = XT_ALIGN(sizeof(struct xt_secmark_target_info_v1)),
.userspacesize = XT_ALIGN(offsetof(struct xt_secmark_target_info_v1, secid)),
.help = SECMARK_help,
.print = SECMARK_print_v1,
.save = SECMARK_save_v1,
.x6_parse = SECMARK_parse_v1,
.x6_options = SECMARK_opts_v1,
}
};
void _init(void)
{
xtables_register_targets(secmark_tg_reg, ARRAY_SIZE(secmark_tg_reg));
}
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