/usr/include/libnl3/netlink/netfilter/exp.h is in libnl-3-dev 3.2.27-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* netlink/netfilter/exp.h Conntrack Expectation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation version 2.1
* of the License.
*
* Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
* Copyright (c) 2007 Philip Craig <philipc@snapgear.com>
* Copyright (c) 2007 Secure Computing Corporation
* Copyright (c) 2012 Rich Fought <rich.fought@watchguard.com>
*/
#ifndef NETLINK_EXP_H_
#define NETLINK_EXP_H_
#include <netlink/netlink.h>
#include <netlink/addr.h>
#include <netlink/cache.h>
#include <netlink/msg.h>
#include <linux/version.h>
#ifdef __cplusplus
extern "C" {
#endif
struct nfnl_exp;
enum nfnl_exp_tuples {
NFNL_EXP_TUPLE_EXPECT,
NFNL_EXP_TUPLE_MASTER,
NFNL_EXP_TUPLE_MASK,
NFNL_EXP_TUPLE_NAT,
NFNL_EXP_TUPLE_MAX
};
extern struct nl_object_ops exp_obj_ops;
extern struct nfnl_exp * nfnl_exp_alloc(void);
extern int nfnl_exp_alloc_cache(struct nl_sock *, struct nl_cache **);
extern int nfnlmsg_exp_group(struct nlmsghdr *);
extern int nfnlmsg_exp_parse(struct nlmsghdr *, struct nfnl_exp **);
extern void nfnl_exp_get(struct nfnl_exp *);
extern void nfnl_exp_put(struct nfnl_exp *);
extern int nfnl_exp_dump_request(struct nl_sock *);
extern int nfnl_exp_build_add_request(const struct nfnl_exp *, int,
struct nl_msg **);
extern int nfnl_exp_add(struct nl_sock *, const struct nfnl_exp *, int);
extern int nfnl_exp_build_delete_request(const struct nfnl_exp *, int,
struct nl_msg **);
extern int nfnl_exp_del(struct nl_sock *, const struct nfnl_exp *, int);
extern int nfnl_exp_build_query_request(const struct nfnl_exp *, int,
struct nl_msg **);
extern int nfnl_exp_query(struct nl_sock *, const struct nfnl_exp *, int);
extern void nfnl_exp_set_family(struct nfnl_exp *, uint8_t);
extern uint8_t nfnl_exp_get_family(const struct nfnl_exp *);
extern void nfnl_exp_set_timeout(struct nfnl_exp *, uint32_t);
extern int nfnl_exp_test_timeout(const struct nfnl_exp *);
extern uint32_t nfnl_exp_get_timeout(const struct nfnl_exp *);
extern void nfnl_exp_set_id(struct nfnl_exp *, uint32_t);
extern int nfnl_exp_test_id(const struct nfnl_exp *);
extern uint32_t nfnl_exp_get_id(const struct nfnl_exp *);
extern int nfnl_exp_set_helper_name(struct nfnl_exp *, void *);
extern int nfnl_exp_test_helper_name(const struct nfnl_exp *);
extern const char * nfnl_exp_get_helper_name(const struct nfnl_exp *);
extern void nfnl_exp_set_zone(struct nfnl_exp *, uint16_t);
extern int nfnl_exp_test_zone(const struct nfnl_exp *);
extern uint16_t nfnl_exp_get_zone(const struct nfnl_exp *);
extern void nfnl_exp_set_flags(struct nfnl_exp *, uint32_t);
extern int nfnl_exp_test_flags(const struct nfnl_exp *);
extern uint32_t nfnl_exp_get_flags(const struct nfnl_exp *);
extern void nfnl_exp_set_class(struct nfnl_exp *, uint32_t);
extern int nfnl_exp_test_class(const struct nfnl_exp *);
extern uint32_t nfnl_exp_get_class(const struct nfnl_exp *);
extern int nfnl_exp_set_fn(struct nfnl_exp *, void *);
extern int nfnl_exp_test_fn(const struct nfnl_exp *);
extern const char * nfnl_exp_get_fn(const struct nfnl_exp *);
extern void nfnl_exp_set_nat_dir(struct nfnl_exp *, uint8_t);
extern int nfnl_exp_test_nat_dir(const struct nfnl_exp *);
extern uint8_t nfnl_exp_get_nat_dir(const struct nfnl_exp *);
// The int argument specifies which nfnl_exp_dir (expect, master, mask or nat)
// Expectation objects only use orig, not reply
extern int nfnl_exp_set_src(struct nfnl_exp *, int, struct nl_addr *);
extern int nfnl_exp_test_src(const struct nfnl_exp *, int);
extern struct nl_addr * nfnl_exp_get_src(const struct nfnl_exp *, int);
extern int nfnl_exp_set_dst(struct nfnl_exp *, int, struct nl_addr *);
extern int nfnl_exp_test_dst(const struct nfnl_exp *, int);
extern struct nl_addr * nfnl_exp_get_dst(const struct nfnl_exp *, int);
extern void nfnl_exp_set_l4protonum(struct nfnl_exp *, int, uint8_t);
extern int nfnl_exp_test_l4protonum(const struct nfnl_exp *, int);
extern uint8_t nfnl_exp_get_l4protonum(const struct nfnl_exp *, int);
extern void nfnl_exp_set_ports(struct nfnl_exp *, int, uint16_t, uint16_t);
extern int nfnl_exp_test_ports(const struct nfnl_exp *, int);
extern uint16_t nfnl_exp_get_src_port(const struct nfnl_exp *, int);
extern uint16_t nfnl_exp_get_dst_port(const struct nfnl_exp *, int);
extern void nfnl_exp_set_icmp(struct nfnl_exp *, int, uint16_t, uint8_t, uint8_t);
extern int nfnl_exp_test_icmp(const struct nfnl_exp *, int);
extern uint16_t nfnl_exp_get_icmp_id(const struct nfnl_exp *, int);
extern uint8_t nfnl_exp_get_icmp_type(const struct nfnl_exp *, int);
extern uint8_t nfnl_exp_get_icmp_code(const struct nfnl_exp *, int);
#ifdef __cplusplus
}
#endif
#endif
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