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ðŸ“„ adb.h(22.07 KB)
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ðŸ“„ bit.h(807 B)
ðŸ“„ byaddr.h(3.91 KB)
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ðŸ“„ catz.h(11.56 KB)
ðŸ“„ cert.h(1.43 KB)
ðŸ“„ client.h(21.53 KB)
ðŸ“„ clientinfo.h(1.96 KB)
ðŸ“„ compress.h(6.49 KB)
ðŸ“„ db.h(45.48 KB)
ðŸ“„ dbiterator.h(7.25 KB)
ðŸ“„ dbtable.h(3.09 KB)
ðŸ“„ diff.h(6.82 KB)
ðŸ“„ dispatch.h(16.04 KB)
ðŸ“„ dlz.h(10.37 KB)
ðŸ“„ dlz_dlopen.h(4.57 KB)
ðŸ“„ dns64.h(5.5 KB)
ðŸ“„ dnssec.h(11.83 KB)
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ðŸ“„ ds.h(1.2 KB)
ðŸ“„ dsdigest.h(1.68 KB)
ðŸ“„ dyndb.h(4.72 KB)
ðŸ“„ ecdb.h(809 B)
ðŸ“„ edns.h(722 B)
ðŸ“„ enumclass.h(1.19 KB)
ðŸ“„ enumtype.h(8.11 KB)
ðŸ“„ events.h(3.96 KB)
ðŸ“„ fixedname.h(1.62 KB)
ðŸ“„ forward.h(3.37 KB)
ðŸ“„ geoip.h(2.73 KB)
ðŸ“„ ipkeylist.h(2.13 KB)
ðŸ“„ iptable.h(1.58 KB)
ðŸ“„ journal.h(8.03 KB)
ðŸ“„ keydata.h(1.03 KB)
ðŸ“„ keyflags.h(1.25 KB)
ðŸ“„ keytable.h(9.24 KB)
ðŸ“„ keyvalues.h(4.06 KB)
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ðŸ“„ peer.h(5.83 KB)
ðŸ“„ portlist.h(2.05 KB)
ðŸ“„ private.h(1.89 KB)
ðŸ“„ rbt.h(39.67 KB)
ðŸ“„ rcode.h(2.42 KB)
ðŸ“„ rdata.h(21.11 KB)
ðŸ“„ rdataclass.h(2.2 KB)
ðŸ“„ rdatalist.h(2.51 KB)
ðŸ“„ rdataset.h(21.03 KB)
ðŸ“„ rdatasetiter.h(3.83 KB)
ðŸ“„ rdataslab.h(4.28 KB)
ðŸ“„ rdatastruct.h(60.14 KB)
ðŸ“„ rdatatype.h(2.24 KB)
ðŸ“„ request.h(10.89 KB)
ðŸ“„ resolver.h(19.75 KB)
ðŸ“„ result.h(9.07 KB)
ðŸ“„ rootns.h(892 B)
ðŸ“„ rpz.h(10.09 KB)
ðŸ“„ rriterator.h(4.13 KB)
ðŸ“„ rrl.h(6.48 KB)
ðŸ“„ sdb.h(7.05 KB)
ðŸ“„ sdlz.h(13.88 KB)
ðŸ“„ secalg.h(1.67 KB)
ðŸ“„ secproto.h(1.52 KB)
ðŸ“„ soa.h(2.13 KB)
ðŸ“„ ssu.h(8.11 KB)
ðŸ“„ stats.h(13.14 KB)
ðŸ“„ tcpmsg.h(3.07 KB)
ðŸ“„ time.h(1.66 KB)
ðŸ“„ timer.h(1.03 KB)
ðŸ“„ tkey.h(7.45 KB)
ðŸ“„ tsec.h(2.88 KB)
ðŸ“„ tsig.h(8.19 KB)
ðŸ“„ ttl.h(1.9 KB)
ðŸ“„ types.h(13.83 KB)
ðŸ“„ update.h(1.61 KB)
ðŸ“„ validator.h(6.99 KB)
ðŸ“„ version.h(868 B)
ðŸ“„ view.h(34.45 KB)
ðŸ“„ xfrin.h(2.86 KB)
ðŸ“„ zone.h(59.44 KB)
ðŸ“„ zonekey.h(777 B)
ðŸ“„ zt.h(5.43 KB)

Editing: rdataslab.h

/*
 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, you can obtain one at https://mozilla.org/MPL/2.0/.
 *
 * See the COPYRIGHT file distributed with this work for additional
 * information regarding copyright ownership.
 */

#ifndef DNS_RDATASLAB_H
#define DNS_RDATASLAB_H 1

/*! \file dns/rdataslab.h
 * \brief
 * Implements storage of rdatasets into slabs of memory.
 *
 * MP:
 *\li	Clients of this module must impose any required synchronization.
 *
 * Reliability:
 *\li	This module deals with low-level byte streams.  Errors in any of
 *	the functions are likely to crash the server or corrupt memory.
 *
 *\li	If the caller passes invalid memory references, these functions are
 *	likely to crash the server or corrupt memory.
 *
 * Resources:
 *\li	None.
 *
 * Security:
 *\li	None.
 *
 * Standards:
 *\li	None.
 */

/***
 *** Imports
 ***/

#include <stdbool.h>

#include <isc/lang.h>

#include <dns/types.h>

ISC_LANG_BEGINDECLS

#define DNS_RDATASLAB_FORCE 0x1
#define DNS_RDATASLAB_EXACT 0x2

#define DNS_RDATASLAB_OFFLINE 0x01 	/* RRSIG is for offline DNSKEY */
#define DNS_RDATASLAB_WARNMASK 0x0E	/*%< RRSIG(DNSKEY) expired
					 * warnings number mask. */
#define DNS_RDATASLAB_WARNSHIFT 1	/*%< How many bits to shift to find
					 * remaining expired warning number. */

/***
 *** Functions
 ***/

isc_result_t
dns_rdataslab_fromrdataset(dns_rdataset_t *rdataset, isc_mem_t *mctx,
			   isc_region_t *region, unsigned int reservelen);
/*%<
 * Slabify a rdataset.  The slab area will be allocated and returned
 * in 'region'.
 *
 * Requires:
 *\li	'rdataset' is valid.
 *
 * Ensures:
 *\li	'region' will have base pointing to the start of allocated memory,
 *	with the slabified region beginning at region->base + reservelen.
 *	region->length contains the total length allocated.
 *
 * Returns:
 *\li	ISC_R_SUCCESS		- successful completion
 *\li	ISC_R_NOMEMORY		- no memory.
 *\li	XXX others
 */

void
dns_rdataslab_tordataset(unsigned char *slab, unsigned int reservelen,
			 dns_rdataclass_t rdclass, dns_rdatatype_t rdtype,
			 dns_rdatatype_t covers, dns_ttl_t ttl,
			 dns_rdataset_t *rdataset);
/*%<
 * Construct an rdataset from a slab.
 *
 * Requires:
 *\li	'slab' points to a slab.
 *\li	'rdataset' is disassociated.
 *
 * Ensures:
 *\li	'rdataset' is associated and points to a valid rdataest.
 */

unsigned int
dns_rdataslab_size(unsigned char *slab, unsigned int reservelen);
/*%<
 * Return the total size of an rdataslab.
 *
 * Requires:
 *\li	'slab' points to a slab.
 *
 * Returns:
 *\li	The number of bytes in the slab, including the reservelen.
 */

unsigned int
dns_rdataslab_count(unsigned char *slab, unsigned int reservelen);
/*%<
 * Return the number of records in the rdataslab
 *
 * Requires:
 *\li	'slab' points to a slab.
 *
 * Returns:
 *\li	The number of records in the slab.
 */

isc_result_t
dns_rdataslab_merge(unsigned char *oslab, unsigned char *nslab,
		    unsigned int reservelen, isc_mem_t *mctx,
		    dns_rdataclass_t rdclass, dns_rdatatype_t type,
		    unsigned int flags, unsigned char **tslabp);
/*%<
 * Merge 'oslab' and 'nslab'.
 */

isc_result_t
dns_rdataslab_subtract(unsigned char *mslab, unsigned char *sslab,
		       unsigned int reservelen, isc_mem_t *mctx,
		       dns_rdataclass_t rdclass, dns_rdatatype_t type,
		       unsigned int flags, unsigned char **tslabp);
/*%<
 * Subtract 'sslab' from 'mslab'.  If 'exact' is true then all elements
 * of 'sslab' must exist in 'mslab'.
 *
 * XXX
 * valid flags are DNS_RDATASLAB_EXACT
 */

bool
dns_rdataslab_equal(unsigned char *slab1, unsigned char *slab2,
		    unsigned int reservelen);
/*%<
 * Compare two rdataslabs for equality.  This does _not_ do a full
 * DNSSEC comparison.
 *
 * Requires:
 *\li	'slab1' and 'slab2' point to slabs.
 *
 * Returns:
 *\li	true if the slabs are equal, false otherwise.
 */
bool
dns_rdataslab_equalx(unsigned char *slab1, unsigned char *slab2,
		     unsigned int reservelen, dns_rdataclass_t rdclass,
		     dns_rdatatype_t type);
/*%<
 * Compare two rdataslabs for DNSSEC equality.
 *
 * Requires:
 *\li	'slab1' and 'slab2' point to slabs.
 *
 * Returns:
 *\li	true if the slabs are equal, #false otherwise.
 */

ISC_LANG_ENDDECLS

#endif /* DNS_RDATASLAB_H */

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