/contrib/ntp/include/isc/interfaceiter.h
https://bitbucket.org/freebsd/freebsd-head/ · C++ Header · 139 lines · 35 code · 19 blank · 85 comment · 0 complexity · 6e23f6faef48da65aac2802eecbd0bb6 MD5 · raw file
- /*
- * Copyright (C) 1999-2001 Internet Software Consortium.
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
- * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
- * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
- * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
- * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
- * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
- * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
- /* $Id: interfaceiter.h,v 1.10 2001/01/09 21:57:01 bwelling Exp $ */
- #ifndef ISC_INTERFACEITER_H
- #define ISC_INTERFACEITER_H 1
- /*****
- ***** Module Info
- *****/
- /*
- * Interface iterator
- *
- * Iterate over the list of network interfaces.
- *
- * Interfaces whose address family is not supported are ignored and never
- * returned by the iterator. Interfaces whose netmask, interface flags,
- * or similar cannot be obtained are also ignored, and the failure is logged.
- *
- * Standards:
- * The API for scanning varies greatly among operating systems.
- * This module attempts to hide the differences.
- */
- /***
- *** Imports
- ***/
- #include <isc/lang.h>
- #include <isc/netaddr.h>
- #include <isc/types.h>
- /*
- * Public structure describing a network interface.
- */
- struct isc_interface {
- char name[32]; /* Interface name, null-terminated. */
- unsigned int af; /* Address family. */
- isc_netaddr_t address; /* Local address. */
- isc_netaddr_t netmask; /* Network mask. */
- isc_netaddr_t broadcast; /* Broadcast address. */
- isc_netaddr_t dstaddress; /* Destination address
- (point-to-point only). */
- isc_uint32_t flags; /* Flags; see below. */
- unsigned int ifindex; /* Interface Index */
- unsigned int scopeid; /* Scope id for Multicasting */
- };
- /* Interface flags. */
- #define INTERFACE_F_UP 0x00000001U /* Interface is up */
- #define INTERFACE_F_POINTTOPOINT 0x00000002U /*this is point-to-point interface*/
- #define INTERFACE_F_LOOPBACK 0x00000004U /* this is loopback interface */
- #define INTERFACE_F_BROADCAST 0x00000008U /* Broadcast is supported */
- #define INTERFACE_F_MULTICAST 0x00000010U /* multicast is supported */
- /***
- *** Functions
- ***/
- ISC_LANG_BEGINDECLS
- isc_result_t
- isc_interfaceiter_create(isc_mem_t *mctx, isc_interfaceiter_t **iterp);
- /*
- * Create an iterator for traversing the operating system's list
- * of network interfaces.
- *
- * Returns:
- * ISC_R_SUCCESS
- * ISC_R_NOMEMORY
- * Various network-related errors
- */
- isc_result_t
- isc_interfaceiter_first(isc_interfaceiter_t *iter);
- /*
- * Position the iterator on the first interface.
- *
- * Returns:
- * ISC_R_SUCCESS Success.
- * ISC_R_NOMORE There are no interfaces.
- */
- isc_result_t
- isc_interfaceiter_current(isc_interfaceiter_t *iter,
- isc_interface_t *ifdata);
- /*
- * Get information about the interface the iterator is currently
- * positioned at and store it at *ifdata.
- *
- * Requires:
- * The iterator has been successfully positioned using
- * isc_interface_iter_first() / isc_interface_iter_next().
- *
- * Returns:
- * ISC_R_SUCCESS Success.
- */
- isc_result_t
- isc_interfaceiter_next(isc_interfaceiter_t *iter);
- /*
- * Position the iterator on the next interface.
- *
- * Requires:
- * The iterator has been successfully positioned using
- * isc_interface_iter_first() / isc_interface_iter_next().
- *
- * Returns:
- * ISC_R_SUCCESS Success.
- * ISC_R_NOMORE There are no more interfaces.
- */
- void
- isc_interfaceiter_destroy(isc_interfaceiter_t **iterp);
- /*
- * Destroy the iterator.
- */
- ISC_LANG_ENDDECLS
- #endif /* ISC_INTERFACEITER_H */