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6afa961534
In units that support detailed reference tracing via ISC_REFCOUNT
macros, we were doing:
/* Define to 1 for detailed reference tracing */
#undef <unit>_TRACE
This would prevent using -D<unit>_TRACE=1 in the CFLAGS.
Convert the above mentioned snippet with just a comment how to enable
the detailed reference tracing:
/* Add -D<unit>_TRACE=1 to CFLAGS for detailed reference tracing */
126 lines
3.3 KiB
C
126 lines
3.3 KiB
C
/*
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* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
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*
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* SPDX-License-Identifier: MPL-2.0
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, you can obtain one at https://mozilla.org/MPL/2.0/.
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*
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* See the COPYRIGHT file distributed with this work for additional
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* information regarding copyright ownership.
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*/
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#pragma once
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/*! \file dns/forward.h */
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#include <isc/lang.h>
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#include <isc/mem.h>
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#include <isc/refcount.h>
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#include <isc/result.h>
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#include <isc/sockaddr.h>
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#include <dns/fixedname.h>
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#include <dns/qp.h>
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#include <dns/types.h>
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/* Add -DDNS_FORWARD_TRACE=1 to CFLAGS for detailed reference tracing */
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ISC_LANG_BEGINDECLS
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struct dns_forwarder {
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isc_sockaddr_t addr;
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dns_name_t *tlsname;
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ISC_LINK(dns_forwarder_t) link;
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};
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typedef ISC_LIST(struct dns_forwarder) dns_forwarderlist_t;
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struct dns_forwarders {
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dns_forwarderlist_t fwdrs;
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dns_fwdpolicy_t fwdpolicy;
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isc_mem_t *mctx;
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isc_refcount_t references;
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dns_fixedname_t fn;
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dns_name_t *name;
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};
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void
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dns_fwdtable_create(isc_mem_t *mctx, dns_view_t *view,
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dns_fwdtable_t **fwdtablep);
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/*%<
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* Creates a new forwarding table.
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*
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* Requires:
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* \li mctx is a valid memory context.
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* \li fwdtablep != NULL && *fwdtablep == NULL
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*/
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isc_result_t
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dns_fwdtable_addfwd(dns_fwdtable_t *fwdtable, const dns_name_t *name,
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dns_forwarderlist_t *fwdrs, dns_fwdpolicy_t policy);
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isc_result_t
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dns_fwdtable_add(dns_fwdtable_t *fwdtable, const dns_name_t *name,
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isc_sockaddrlist_t *addrs, dns_fwdpolicy_t policy);
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/*%<
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* Adds an entry to the forwarding table. The entry associates
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* a domain with a list of forwarders and a forwarding policy. The
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* addrs/fwdrs list is copied if not empty, so the caller should free
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* its copy.
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*
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* Requires:
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* \li fwdtable is a valid forwarding table.
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* \li name is a valid name
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* \li addrs/fwdrs is a valid list of isc_sockaddr/dns_forwarder
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* structures, which may be empty.
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*
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* Returns:
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* \li #ISC_R_SUCCESS
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* \li #ISC_R_NOMEMORY
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*/
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isc_result_t
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dns_fwdtable_find(dns_fwdtable_t *fwdtable, const dns_name_t *name,
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dns_forwarders_t **forwardersp);
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/*%<
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* Finds a domain in the forwarding table. The closest matching parent
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* domain is returned.
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*
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* Requires:
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* \li fwdtable is a valid forwarding table.
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* \li name is a valid name
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* \li forwardersp != NULL && *forwardersp == NULL
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*
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* Returns:
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* \li #ISC_R_SUCCESS Success
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* \li #DNS_R_PARTIALMATCH Superdomain found with data
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* \li #ISC_R_NOTFOUND No match
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*/
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void
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dns_fwdtable_destroy(dns_fwdtable_t **fwdtablep);
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/*%<
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* Destroys a forwarding table.
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*
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* Requires:
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* \li fwtablep != NULL && *fwtablep != NULL
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*
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* Ensures:
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* \li all memory associated with the forwarding table is freed.
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*/
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#if DNS_FORWARD_TRACE
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#define dns_forwarders_ref(ptr) \
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dns_forwarders__ref(ptr, __func__, __FILE__, __LINE__)
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#define dns_forwarders_unref(ptr) \
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dns_forwarders__unref(ptr, __func__, __FILE__, __LINE__)
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#define dns_forwarders_attach(ptr, ptrp) \
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dns_forwarders__attach(ptr, ptrp, __func__, __FILE__, __LINE__)
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#define dns_forwarders_detach(ptrp) \
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dns_forwarders__detach(ptrp, __func__, __FILE__, __LINE__)
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ISC_REFCOUNT_TRACE_DECL(dns_forwarders);
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#else
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ISC_REFCOUNT_DECL(dns_forwarders);
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#endif
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ISC_LANG_ENDDECLS
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