2 * Copyright (c) 2016, Marie Helene Kvello-Aune
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6 * are permitted provided that the following conditions are met:
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31 #include "libifconfig.h"
38 ifconfig_errtype errtype;
41 * The error occured in this ioctl() request.
42 * Populated if errtype = IOCTL
44 unsigned long ioctl_request;
47 * The value of the global errno variable when the error occured.
52 struct ifconfig_handle {
53 struct errstate error;
54 int sockets[AF_MAX + 1];
58 * Retrieves socket for address family <paramref name="addressfamily"> from
59 * cache, or creates it if it doesn't already exist.
60 * @param addressfamily The address family of the socket to retrieve
61 * @param s The retrieved socket.
62 * @return 0 on success, -1 on failure.
64 * This example shows how to retrieve a socket from the cache.
66 * static void myfunc() \{
68 * if (ifconfig_socket(AF_LOCAL, &s) != 0) \{
69 * // Handle error state here
76 int ifconfig_socket(ifconfig_handle_t *h, const int addressfamily, int *s);
78 /** Function used by other wrapper functions to populate _errstate when appropriate.*/
79 int ifconfig_ioctlwrap_ret(ifconfig_handle_t *h, unsigned long request,
82 /** Function to wrap ioctl() and automatically populate ifconfig_errstate when appropriate.*/
83 int ifconfig_ioctlwrap(ifconfig_handle_t *h, const int addressfamily,
84 unsigned long request, struct ifreq *ifr);