socket-util.h revision 2583fbea8e762d2e915582af60560f884d5093f5
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
#pragma once
/***
This file is part of systemd.
Copyright 2010 Lennart Poettering
systemd 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; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/ether.h>
#include <sys/un.h>
#include <linux/netlink.h>
#include <linux/if_packet.h>
#include "macro.h"
#include "util.h"
union sockaddr_union {
struct sockaddr sa;
struct sockaddr_in in;
struct sockaddr_in6 in6;
struct sockaddr_un un;
struct sockaddr_nl nl;
struct sockaddr_storage storage;
struct sockaddr_ll ll;
};
typedef struct SocketAddress {
union sockaddr_union sockaddr;
/* We store the size here explicitly due to the weird
* sockaddr_un semantics for abstract sockets */
socklen_t size;
/* Socket type, i.e. SOCK_STREAM, SOCK_DGRAM, ... */
int type;
/* Socket protocol, IPPROTO_xxx, usually 0, except for netlink */
int protocol;
} SocketAddress;
typedef enum SocketAddressBindIPv6Only {
SOCKET_ADDRESS_DEFAULT,
SOCKET_ADDRESS_BOTH,
SOCKET_ADDRESS_IPV6_ONLY,
_SOCKET_ADDRESS_BIND_IPV6_ONLY_MAX,
_SOCKET_ADDRESS_BIND_IPV6_ONLY_INVALID = -1
} SocketAddressBindIPv6Only;
#define socket_address_family(a) ((a)->sockaddr.sa.sa_family)
int socket_address_parse(SocketAddress *a, const char *s);
int socket_address_parse_and_warn(SocketAddress *a, const char *s);
int socket_address_parse_netlink(SocketAddress *a, const char *s);
int socket_address_print(const SocketAddress *a, char **p);
int socket_address_verify(const SocketAddress *a) _pure_;
int socket_address_unlink(SocketAddress *a);
bool socket_address_can_accept(const SocketAddress *a) _pure_;
int socket_address_listen(
const SocketAddress *a,
int flags,
int backlog,
SocketAddressBindIPv6Only only,
const char *bind_to_device,
bool reuse_port,
bool free_bind,
bool transparent,
mode_t directory_mode,
mode_t socket_mode,
const char *label);
int make_socket_fd(int log_level, const char* address, int flags);
bool socket_address_is(const SocketAddress *a, const char *s, int type);
bool socket_address_is_netlink(const SocketAddress *a, const char *s);
bool socket_address_matches_fd(const SocketAddress *a, int fd);
bool socket_address_equal(const SocketAddress *a, const SocketAddress *b) _pure_;
const char* socket_address_get_path(const SocketAddress *a);
bool socket_ipv6_is_supported(void);
int sockaddr_port(const struct sockaddr *_sa) _pure_;
int sockaddr_pretty(const struct sockaddr *_sa, socklen_t salen, bool translate_ipv6, bool include_port, char **ret);
int getpeername_pretty(int fd, char **ret);
int getsockname_pretty(int fd, char **ret);
int socknameinfo_pretty(union sockaddr_union *sa, socklen_t salen, char **_ret);
int getnameinfo_pretty(int fd, char **ret);
const char* socket_address_bind_ipv6_only_to_string(SocketAddressBindIPv6Only b) _const_;
SocketAddressBindIPv6Only socket_address_bind_ipv6_only_from_string(const char *s) _pure_;
int netlink_family_to_string_alloc(int b, char **s);
int netlink_family_from_string(const char *s) _pure_;
bool sockaddr_equal(const union sockaddr_union *a, const union sockaddr_union *b);
int fd_inc_sndbuf(int fd, size_t n);
int fd_inc_rcvbuf(int fd, size_t n);
int ip_tos_to_string_alloc(int i, char **s);
int ip_tos_from_string(const char *s);
int getpeercred(int fd, struct ucred *ucred);
int getpeersec(int fd, char **ret);
int send_one_fd(int transport_fd, int fd, int flags);
int receive_one_fd(int transport_fd, int flags);