+/* SPDX-License-Identifier: LGPL-2.1+ */
#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 <netinet/in.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <sys/socket.h>
+#include <sys/types.h>
#include <sys/un.h>
#include <linux/netlink.h>
+#include <linux/if_infiniband.h>
#include <linux/if_packet.h>
#include "macro.h"
+#include "missing.h"
#include "util.h"
union sockaddr_union {
+ /* The minimal, abstract version */
struct sockaddr sa;
+
+ /* The libc provided version that allocates "enough room" for every protocol */
+ struct sockaddr_storage storage;
+
+ /* Protoctol-specific implementations */
struct sockaddr_in in;
struct sockaddr_in6 in6;
struct sockaddr_un un;
+#if 0 /// UNNEEDED by elogind.
struct sockaddr_nl nl;
- struct sockaddr_storage storage;
struct sockaddr_ll ll;
+#endif // 0
+ struct sockaddr_vm vm;
+
+ /* Ensure there is enough space to store Infiniband addresses */
+ uint8_t ll_buffer[offsetof(struct sockaddr_ll, sll_addr) + CONST_MAX(ETH_ALEN, INFINIBAND_ALEN)];
+
+ /* Ensure there is enough space after the AF_UNIX sun_path for one more NUL byte, just to be sure that the path
+ * component is always followed by at least one NUL byte. */
+ uint8_t un_buffer[sizeof(struct sockaddr_un) + 1];
};
#if 0 /// UNNEEDED by elogind
#define socket_address_family(a) ((a)->sockaddr.sa.sa_family)
+const char* socket_address_type_to_string(int t) _const_;
+int socket_address_type_from_string(const char *s) _pure_;
+
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);
bool socket_address_equal(const SocketAddress *a, const SocketAddress *b) _pure_;
const char* socket_address_get_path(const SocketAddress *a);
-#endif // 0
bool socket_ipv6_is_supported(void);
+#endif // 0
-#if 0 /// UNNEEDED by elogind
-int sockaddr_port(const struct sockaddr *_sa) _pure_;
+int sockaddr_port(const struct sockaddr *_sa, unsigned *port);
-Sint sockaddr_pretty(const struct sockaddr *_sa, socklen_t salen, bool translate_ipv6, bool include_port, char **ret);
-int getpeername_pretty(int fd, char **ret);
+#if 0 /// UNNEEDED by elogind
+int sockaddr_pretty(const struct sockaddr *_sa, socklen_t salen, bool translate_ipv6, bool include_port, char **ret);
+int getpeername_pretty(int fd, bool include_port, 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_;
+SocketAddressBindIPv6Only socket_address_bind_ipv6_only_or_bool_from_string(const char *s);
int netlink_family_to_string_alloc(int b, char **s);
int netlink_family_from_string(const char *s) _pure_;
int fd_inc_sndbuf(int fd, size_t n);
int fd_inc_rcvbuf(int fd, size_t n);
#if 0 /// UNNEEDED by elogind
+
int ip_tos_to_string_alloc(int i, char **s);
int ip_tos_from_string(const char *s);
+
+bool ifname_valid(const char *p);
+bool address_label_valid(const char *p);
#endif // 0
int getpeercred(int fd, struct ucred *ucred);
int getpeersec(int fd, char **ret);
+int getpeergroups(int fd, gid_t **ret);
-int send_one_fd(int transport_fd, int fd, int flags);
+int send_one_fd_sa(int transport_fd,
+ int fd,
+ const struct sockaddr *sa, socklen_t len,
+ int flags);
+#define send_one_fd(transport_fd, fd, flags) send_one_fd_sa(transport_fd, fd, NULL, 0, flags)
#if 0 /// UNNEEDED by elogind
int receive_one_fd(int transport_fd, int flags);
+
+ssize_t next_datagram_size_fd(int fd);
+
+int flush_accept(int fd);
#endif // 0
#define CMSG_FOREACH(cmsg, mh) \
for ((cmsg) = CMSG_FIRSTHDR(mh); (cmsg); (cmsg) = CMSG_NXTHDR((mh), (cmsg)))
+
+#if 0 /// UNNEEDED by elogind
+struct cmsghdr* cmsg_find(struct msghdr *mh, int level, int type, socklen_t length);
+#endif // 0
+
+/*
+ * Certain hardware address types (e.g Infiniband) do not fit into sll_addr
+ * (8 bytes) and run over the structure. This macro returns the correct size that
+ * must be passed to kernel.
+ */
+#define SOCKADDR_LL_LEN(sa) \
+ ({ \
+ const struct sockaddr_ll *_sa = &(sa); \
+ size_t _mac_len = sizeof(_sa->sll_addr); \
+ assert(_sa->sll_family == AF_PACKET); \
+ if (be16toh(_sa->sll_hatype) == ARPHRD_ETHER) \
+ _mac_len = MAX(_mac_len, (size_t) ETH_ALEN); \
+ if (be16toh(_sa->sll_hatype) == ARPHRD_INFINIBAND) \
+ _mac_len = MAX(_mac_len, (size_t) INFINIBAND_ALEN); \
+ offsetof(struct sockaddr_ll, sll_addr) + _mac_len; \
+ })
+
+/* Covers only file system and abstract AF_UNIX socket addresses, but not unnamed socket addresses. */
+#define SOCKADDR_UN_LEN(sa) \
+ ({ \
+ const struct sockaddr_un *_sa = &(sa); \
+ assert(_sa->sun_family == AF_UNIX); \
+ offsetof(struct sockaddr_un, sun_path) + \
+ (_sa->sun_path[0] == 0 ? \
+ 1 + strnlen(_sa->sun_path+1, sizeof(_sa->sun_path)-1) : \
+ strnlen(_sa->sun_path, sizeof(_sa->sun_path))); \
+ })
+
+#if 0 /// UNNEEDED by elogind
+int socket_ioctl_fd(void);
+#endif // 0
~ianmdlvl / elogind.git / blobdiff