4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
22 #include <netinet/ether.h>
23 #include <netinet/in.h>
26 #include <sys/socket.h>
27 #include <sys/types.h>
29 #include <linux/netlink.h>
30 #include <linux/if_packet.h>
35 union sockaddr_union {
37 #if 0 /// UNNEEDED by elogind, only 'sa' and 'un' are used in all of elogind.
38 struct sockaddr_in in;
39 struct sockaddr_in6 in6;
41 struct sockaddr_un un;
42 #if 0 /// UNNEEDED by elogind, only 'sa' and 'un' are used in all of elogind.
43 struct sockaddr_nl nl;
44 struct sockaddr_storage storage;
45 struct sockaddr_ll ll;
46 struct sockaddr_vm vm;
50 #if 0 /// UNNEEDED by elogind
51 typedef struct SocketAddress {
52 union sockaddr_union sockaddr;
54 /* We store the size here explicitly due to the weird
55 * sockaddr_un semantics for abstract sockets */
58 /* Socket type, i.e. SOCK_STREAM, SOCK_DGRAM, ... */
61 /* Socket protocol, IPPROTO_xxx, usually 0, except for netlink */
65 typedef enum SocketAddressBindIPv6Only {
66 SOCKET_ADDRESS_DEFAULT,
68 SOCKET_ADDRESS_IPV6_ONLY,
69 _SOCKET_ADDRESS_BIND_IPV6_ONLY_MAX,
70 _SOCKET_ADDRESS_BIND_IPV6_ONLY_INVALID = -1
71 } SocketAddressBindIPv6Only;
73 #define socket_address_family(a) ((a)->sockaddr.sa.sa_family)
75 int socket_address_parse(SocketAddress *a, const char *s);
76 int socket_address_parse_and_warn(SocketAddress *a, const char *s);
77 int socket_address_parse_netlink(SocketAddress *a, const char *s);
78 int socket_address_print(const SocketAddress *a, char **p);
79 int socket_address_verify(const SocketAddress *a) _pure_;
80 int socket_address_unlink(SocketAddress *a);
82 bool socket_address_can_accept(const SocketAddress *a) _pure_;
84 int socket_address_listen(
85 const SocketAddress *a,
88 SocketAddressBindIPv6Only only,
89 const char *bind_to_device,
93 mode_t directory_mode,
96 int make_socket_fd(int log_level, const char* address, int type, int flags);
98 bool socket_address_is(const SocketAddress *a, const char *s, int type);
99 bool socket_address_is_netlink(const SocketAddress *a, const char *s);
101 bool socket_address_matches_fd(const SocketAddress *a, int fd);
103 bool socket_address_equal(const SocketAddress *a, const SocketAddress *b) _pure_;
105 const char* socket_address_get_path(const SocketAddress *a);
107 bool socket_ipv6_is_supported(void);
109 int sockaddr_port(const struct sockaddr *_sa, unsigned *port);
111 int sockaddr_pretty(const struct sockaddr *_sa, socklen_t salen, bool translate_ipv6, bool include_port, char **ret);
112 int getpeername_pretty(int fd, bool include_port, char **ret);
113 int getsockname_pretty(int fd, char **ret);
115 int socknameinfo_pretty(union sockaddr_union *sa, socklen_t salen, char **_ret);
116 int getnameinfo_pretty(int fd, char **ret);
118 const char* socket_address_bind_ipv6_only_to_string(SocketAddressBindIPv6Only b) _const_;
119 SocketAddressBindIPv6Only socket_address_bind_ipv6_only_from_string(const char *s) _pure_;
121 int netlink_family_to_string_alloc(int b, char **s);
122 int netlink_family_from_string(const char *s) _pure_;
124 bool sockaddr_equal(const union sockaddr_union *a, const union sockaddr_union *b);
127 int fd_inc_sndbuf(int fd, size_t n);
128 int fd_inc_rcvbuf(int fd, size_t n);
129 #if 0 /// UNNEEDED by elogind
131 int ip_tos_to_string_alloc(int i, char **s);
132 int ip_tos_from_string(const char *s);
134 bool ifname_valid(const char *p);
135 bool address_label_valid(const char *p);
138 int getpeercred(int fd, struct ucred *ucred);
139 int getpeersec(int fd, char **ret);
141 int send_one_fd_sa(int transport_fd,
143 const struct sockaddr *sa, socklen_t len,
145 #define send_one_fd(transport_fd, fd, flags) send_one_fd_sa(transport_fd, fd, NULL, 0, flags)
146 #if 0 /// UNNEEDED by elogind
147 int receive_one_fd(int transport_fd, int flags);
149 ssize_t next_datagram_size_fd(int fd);
151 int flush_accept(int fd);
154 #define CMSG_FOREACH(cmsg, mh) \
155 for ((cmsg) = CMSG_FIRSTHDR(mh); (cmsg); (cmsg) = CMSG_NXTHDR((mh), (cmsg)))
157 #if 0 /// UNNEEDED by elogind
158 struct cmsghdr* cmsg_find(struct msghdr *mh, int level, int type, socklen_t length);
161 /* Covers only file system and abstract AF_UNIX socket addresses, but not unnamed socket addresses. */
162 #define SOCKADDR_UN_LEN(sa) \
164 const struct sockaddr_un *_sa = &(sa); \
165 assert(_sa->sun_family == AF_UNIX); \
166 offsetof(struct sockaddr_un, sun_path) + \
167 (_sa->sun_path[0] == 0 ? \
168 1 + strnlen(_sa->sun_path+1, sizeof(_sa->sun_path)-1) : \
169 strnlen(_sa->sun_path, sizeof(_sa->sun_path))); \
172 #if 0 /// UNNEEDED by elogind
173 int socket_ioctl_fd(void);