2012-07-18 19:07:51 +02:00
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#pragma once
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2010-01-19 02:56:37 +01:00
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2010-02-03 13:03:47 +01:00
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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2012-04-12 00:20:58 +02:00
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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2010-02-03 13:03:47 +01:00
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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2012-04-12 00:20:58 +02:00
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Lesser General Public License for more details.
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2010-02-03 13:03:47 +01:00
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2012-04-12 00:20:58 +02:00
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You should have received a copy of the GNU Lesser General Public License
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2010-02-03 13:03:47 +01:00
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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2014-08-15 13:18:50 +02:00
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#include <netinet/ether.h>
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2015-11-18 22:46:33 +01:00
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#include <netinet/in.h>
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2015-11-30 21:43:37 +01:00
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#include <stdbool.h>
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#include <stddef.h>
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2015-11-18 22:46:33 +01:00
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#include <sys/socket.h>
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2015-11-30 21:43:37 +01:00
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#include <sys/types.h>
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2010-01-19 02:56:37 +01:00
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#include <sys/un.h>
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2011-04-10 03:27:00 +02:00
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#include <linux/netlink.h>
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2013-12-09 22:43:17 +01:00
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#include <linux/if_packet.h>
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2010-01-19 02:56:37 +01:00
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#include "macro.h"
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#include "util.h"
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2010-08-16 15:37:52 +02:00
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union sockaddr_union {
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struct sockaddr sa;
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2013-11-07 00:03:54 +01:00
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struct sockaddr_in in;
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2010-08-16 15:37:52 +02:00
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struct sockaddr_in6 in6;
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struct sockaddr_un un;
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2011-04-10 03:27:00 +02:00
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struct sockaddr_nl nl;
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2010-08-16 15:37:52 +02:00
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struct sockaddr_storage storage;
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2013-12-09 22:43:17 +01:00
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struct sockaddr_ll ll;
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2010-08-16 15:37:52 +02:00
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};
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2010-01-23 03:35:54 +01:00
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typedef struct SocketAddress {
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2010-08-16 15:37:52 +02:00
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union sockaddr_union sockaddr;
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2010-01-19 02:56:37 +01:00
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/* We store the size here explicitly due to the weird
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* sockaddr_un semantics for abstract sockets */
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socklen_t size;
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/* Socket type, i.e. SOCK_STREAM, SOCK_DGRAM, ... */
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int type;
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2011-04-10 03:27:00 +02:00
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/* Socket protocol, IPPROTO_xxx, usually 0, except for netlink */
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int protocol;
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2010-01-23 03:35:54 +01:00
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} SocketAddress;
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2010-01-19 02:56:37 +01:00
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2010-01-23 03:35:54 +01:00
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typedef enum SocketAddressBindIPv6Only {
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SOCKET_ADDRESS_DEFAULT,
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SOCKET_ADDRESS_BOTH,
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2010-05-21 23:41:25 +02:00
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SOCKET_ADDRESS_IPV6_ONLY,
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_SOCKET_ADDRESS_BIND_IPV6_ONLY_MAX,
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_SOCKET_ADDRESS_BIND_IPV6_ONLY_INVALID = -1
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} SocketAddressBindIPv6Only;
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2010-01-19 02:56:37 +01:00
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2010-01-23 03:35:54 +01:00
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#define socket_address_family(a) ((a)->sockaddr.sa.sa_family)
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2010-01-19 02:56:37 +01:00
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2010-01-23 03:35:54 +01:00
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int socket_address_parse(SocketAddress *a, const char *s);
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2015-05-15 20:15:59 +02:00
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int socket_address_parse_and_warn(SocketAddress *a, const char *s);
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2011-04-10 03:27:00 +02:00
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int socket_address_parse_netlink(SocketAddress *a, const char *s);
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2010-01-23 03:35:54 +01:00
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int socket_address_print(const SocketAddress *a, char **p);
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2013-05-03 04:51:50 +02:00
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int socket_address_verify(const SocketAddress *a) _pure_;
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2014-06-04 13:10:43 +02:00
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int socket_address_unlink(SocketAddress *a);
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2010-02-12 02:02:14 +01:00
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2013-05-03 04:51:50 +02:00
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bool socket_address_can_accept(const SocketAddress *a) _pure_;
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2010-04-15 06:19:54 +02:00
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2010-02-12 02:02:14 +01:00
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int socket_address_listen(
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const SocketAddress *a,
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2013-11-06 22:30:35 +01:00
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int flags,
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2010-02-12 02:02:14 +01:00
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int backlog,
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SocketAddressBindIPv6Only only,
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const char *bind_to_device,
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2015-07-01 13:39:53 +02:00
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bool reuse_port,
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2010-07-01 00:29:17 +02:00
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bool free_bind,
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2011-05-19 13:22:31 +02:00
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bool transparent,
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mode_t directory_mode,
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mode_t socket_mode,
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2013-11-06 22:30:35 +01:00
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const char *label);
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2016-01-22 05:11:44 +01:00
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int make_socket_fd(int log_level, const char* address, int type, int flags);
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2010-01-19 02:56:37 +01:00
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2010-06-05 00:52:30 +02:00
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bool socket_address_is(const SocketAddress *a, const char *s, int type);
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2011-04-10 03:27:00 +02:00
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bool socket_address_is_netlink(const SocketAddress *a, const char *s);
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2010-04-21 03:27:44 +02:00
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2012-12-22 19:30:07 +01:00
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bool socket_address_matches_fd(const SocketAddress *a, int fd);
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2013-05-03 04:51:50 +02:00
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bool socket_address_equal(const SocketAddress *a, const SocketAddress *b) _pure_;
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2010-04-21 03:27:44 +02:00
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2013-09-26 20:14:24 +02:00
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const char* socket_address_get_path(const SocketAddress *a);
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2010-05-13 03:07:16 +02:00
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2013-11-07 00:03:54 +01:00
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bool socket_ipv6_is_supported(void);
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2015-03-10 12:41:59 +01:00
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int sockaddr_port(const struct sockaddr *_sa) _pure_;
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int sockaddr_pretty(const struct sockaddr *_sa, socklen_t salen, bool translate_ipv6, bool include_port, char **ret);
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2015-12-01 18:29:59 +01:00
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int getpeername_pretty(int fd, bool include_port, char **ret);
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2013-11-07 00:03:54 +01:00
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int getsockname_pretty(int fd, char **ret);
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2014-06-30 01:24:56 +02:00
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int socknameinfo_pretty(union sockaddr_union *sa, socklen_t salen, char **_ret);
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int getnameinfo_pretty(int fd, char **ret);
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2013-05-03 04:51:50 +02:00
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const char* socket_address_bind_ipv6_only_to_string(SocketAddressBindIPv6Only b) _const_;
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SocketAddressBindIPv6Only socket_address_bind_ipv6_only_from_string(const char *s) _pure_;
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2010-05-21 23:41:25 +02:00
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2012-10-30 14:29:38 +01:00
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int netlink_family_to_string_alloc(int b, char **s);
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2013-11-07 00:03:54 +01:00
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int netlink_family_from_string(const char *s) _pure_;
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2014-08-12 14:54:32 +02:00
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bool sockaddr_equal(const union sockaddr_union *a, const union sockaddr_union *b);
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2015-10-26 01:09:02 +01:00
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int fd_inc_sndbuf(int fd, size_t n);
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int fd_inc_rcvbuf(int fd, size_t n);
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int ip_tos_to_string_alloc(int i, char **s);
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int ip_tos_from_string(const char *s);
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int getpeercred(int fd, struct ucred *ucred);
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int getpeersec(int fd, char **ret);
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2015-12-03 08:20:39 +01:00
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int send_one_fd_sa(int transport_fd,
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int fd,
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const struct sockaddr *sa, socklen_t len,
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int flags);
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#define send_one_fd(transport_fd, fd, flags) send_one_fd_sa(transport_fd, fd, NULL, 0, flags)
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2015-10-26 01:09:02 +01:00
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int receive_one_fd(int transport_fd, int flags);
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2015-10-27 01:03:03 +01:00
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2016-02-15 22:50:01 +01:00
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ssize_t next_datagram_size_fd(int fd);
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2016-05-06 13:29:26 +02:00
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int flush_accept(int fd);
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2015-10-27 01:03:03 +01:00
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#define CMSG_FOREACH(cmsg, mh) \
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for ((cmsg) = CMSG_FIRSTHDR(mh); (cmsg); (cmsg) = CMSG_NXTHDR((mh), (cmsg)))
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2016-05-05 22:24:36 +02:00
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/* Covers only file system and abstract AF_UNIX socket addresses, but not unnamed socket addresses. */
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#define SOCKADDR_UN_LEN(sa) \
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({ \
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const struct sockaddr_un *_sa = &(sa); \
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assert(_sa->sun_family == AF_UNIX); \
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offsetof(struct sockaddr_un, sun_path) + \
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(_sa->sun_path[0] == 0 ? \
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1 + strnlen(_sa->sun_path+1, sizeof(_sa->sun_path)-1) : \
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strnlen(_sa->sun_path, sizeof(_sa->sun_path))); \
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})
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