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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
*/
#ifndef _IFADDRS_H
#define _IFADDRS_H
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/types.h>
/*
* The `getifaddrs' function generates a linked list of these structures.
* Each element of the list describes one network interface.
*/
#if defined(_INT64_TYPE)
struct ifaddrs {
struct ifaddrs *ifa_next; /* Pointer to the next structure. */
char *ifa_name; /* Name of this network interface. */
uint64_t ifa_flags; /* Flags as from SIOCGLIFFLAGS ioctl. */
struct sockaddr *ifa_addr; /* Network address of this interface. */
struct sockaddr *ifa_netmask; /* Netmask of this interface. */
union {
/*
* At most one of the following two is valid. If the
* IFF_BROADCAST bit is set in `ifa_flags', then
* `ifa_broadaddr' is valid. If the IFF_POINTOPOINT bit is
* set, then `ifa_dstaddr' is valid. It is never the case that
* both these bits are set at once.
*/
struct sockaddr *ifu_broadaddr;
struct sockaddr *ifu_dstaddr;
} ifa_ifu;
void *ifa_data; /* Address-specific data (may be unused). */
/*
* This may have been defined in <net/if.h>.
*/
#ifndef ifa_broadaddr
#define ifa_broadaddr ifa_ifu.ifu_broadaddr /* broadcast address */
#endif
#ifndef ifa_dstaddr
#define ifa_dstaddr ifa_ifu.ifu_dstaddr /* other end of p-to-p link */
#endif
};
#endif
/*
* Create a linked list of `struct ifaddrs' structures, one for each
* network interface on the host machine. If successful, store the
* list in *ifap and return 0. On errors, return -1 and set `errno'.
*
* The storage returned in *ifap is allocated dynamically and can
* only be properly freed by passing it to `freeifaddrs'.
*/
extern int getifaddrs(struct ifaddrs **);
/* Reclaim the storage allocated by a previous `getifaddrs' call. */
extern void freeifaddrs(struct ifaddrs *);
#ifdef __cplusplus
}
#endif
#endif /* _IFADDRS_H */
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