| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| #pragma once |
| |
| /** |
| * @file ifaddrs.h |
| * @brief Access to network interface addresses. |
| */ |
| |
| #include <sys/cdefs.h> |
| #include <netinet/in.h> |
| #include <sys/socket.h> |
| |
| __BEGIN_DECLS |
| |
| /** |
| * Returned by getifaddrs() and freed by freeifaddrs(). |
| */ |
| struct ifaddrs { |
| /** Pointer to the next element in the linked list. */ |
| struct ifaddrs* _Nullable ifa_next; |
| |
| /** Interface name. */ |
| char* _Nullable ifa_name; |
| /** Interface flags (like `SIOCGIFFLAGS`). */ |
| unsigned int ifa_flags; |
| /** Interface address. */ |
| struct sockaddr* _Nullable ifa_addr; |
| /** Interface netmask. */ |
| struct sockaddr* _Nullable ifa_netmask; |
| |
| union { |
| /** Interface broadcast address (if IFF_BROADCAST is set). */ |
| struct sockaddr* _Nullable ifu_broadaddr; |
| /** Interface destination address (if IFF_POINTOPOINT is set). */ |
| struct sockaddr* _Nullable ifu_dstaddr; |
| } ifa_ifu; |
| |
| /** Unused. */ |
| void* _Nullable ifa_data; |
| }; |
| |
| /** Synonym for `ifa_ifu.ifu_broadaddr` in `struct ifaddrs`. */ |
| #define ifa_broadaddr ifa_ifu.ifu_broadaddr |
| /** Synonym for `ifa_ifu.ifu_dstaddr` in `struct ifaddrs`. */ |
| #define ifa_dstaddr ifa_ifu.ifu_dstaddr |
| |
| /** |
| * [getifaddrs(3)](https://man7.org/linux/man-pages/man3/getifaddrs.3.html) creates a linked list |
| * of `struct ifaddrs`. The list must be freed by freeifaddrs(). |
| * |
| * Returns 0 and stores the list in `*__list_ptr` on success, |
| * and returns -1 and sets `errno` on failure. |
| * |
| * Available since API level 24. |
| */ |
| |
| #if __BIONIC_AVAILABILITY_GUARD(24) |
| int getifaddrs(struct ifaddrs* _Nullable * _Nonnull __list_ptr) __INTRODUCED_IN(24); |
| |
| /** |
| * [freeifaddrs(3)](https://man7.org/linux/man-pages/man3/freeifaddrs.3.html) frees a linked list |
| * of `struct ifaddrs` returned by getifaddrs(). |
| * |
| * Available since API level 24. |
| */ |
| void freeifaddrs(struct ifaddrs* _Nullable __ptr) __INTRODUCED_IN(24); |
| #endif /* __BIONIC_AVAILABILITY_GUARD(24) */ |
| |
| |
| __END_DECLS |