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/*
* Copyright (c) 2016-2017, Marie Helene Kvello-Aune
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* thislist of conditions and the following disclaimer.
*
* 2. 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 HOLDER 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.
*
* $FreeBSD$
*/
#pragma once
#include "libifconfig.h"
struct errstate {
/**
* Type of error.
*/
ifconfig_errtype errtype;
/**
* The error occured in this ioctl() request.
* Populated if errtype = IOCTL
*/
unsigned long ioctl_request;
/**
* The value of the global errno variable when the error occured.
*/
int errcode;
};
struct ifconfig_handle {
struct errstate error;
int sockets[AF_MAX + 1];
/** Cached output of getifaddrs */
struct ifaddrs *ifap;
};
/* Fetch the list of interface addrs, if it hasn't already been fetched */
int ifconfig_getifaddrs(ifconfig_handle_t *h);
/**
* Retrieves socket for address family <paramref name="addressfamily"> from
* cache, or creates it if it doesn't already exist.
* @param addressfamily The address family of the socket to retrieve
* @param s The retrieved socket.
* @return 0 on success, -1 on failure.
* {@example
* This example shows how to retrieve a socket from the cache.
* {@code
* static void myfunc() \{
* int s;
* if (ifconfig_socket(AF_LOCAL, &s) != 0) \{
* // Handle error state here
* \}
* // user code here
* \}
* }
* }
*/
int ifconfig_socket(ifconfig_handle_t *h, const int addressfamily, int *s);
/** Function to wrap ioctl() and automatically populate ifconfig_errstate when appropriate.*/
int ifconfig_ioctlwrap(ifconfig_handle_t *h, const int addressfamily,
unsigned long request, void *data);
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