ldns_rr_descriptor_minimum(3)

ldns_rr_descriptor_minimum3

Rdata field descriptors

Usage

#include <stdint.h>
#include <stdbool.h>

#include <ldns/ldns.h>

const ldns_rr_descriptor* ldns_rr_descript(uint16_t type);

size_t ldns_rr_descriptor_minimum(const ldns_rr_descriptor *descriptor);

size_t ldns_rr_descriptor_maximum(const ldns_rr_descriptor *descriptor);

ldns_rdf_type ldns_rr_descriptor_field_type(const ldns_rr_descriptor *descriptor, size_t field);

Overview

ldns_rr_descriptor
Contains all information about resource record types.

This structure contains, for all rr types, the rdata fields that are defined.
struct ldns_struct_rr_descriptor
{

Type of the RR that is described here:

ldns_rr_type _type;

Textual name of the RR type.:

const char *_name;

Minimum number of rdata fields in the RRs of this type.:

uint8_t _minimum;

Maximum number of rdata fields in the RRs of this type.:

uint8_t _maximum;

Wireformat specification for the rr, i.e. the types of rdata fields in their respective order.:

const ldns_rdf_type *_wireformat;

Special rdf types:

ldns_rdf_type _variable;

Specifies whether compression can be used for dnames in this RR type.:

ldns_rr_compress _compress;

The number of DNAMEs in the _wireformat string, for parsing.:

uint8_t _dname_count;
};
typedef struct ldns_struct_rr_descriptor ldns_rr_descriptor;

ldns_rr_descript() returns the resource record descriptor for the given rr type.

.br type: the type value of the rr type .br Returns the ldns_rr_descriptor for this type

ldns_rr_descriptor_minimum() returns the minimum number of rdata fields of the rr type this descriptor describes.

.br descriptor: for an rr type .br Returns the minimum number of rdata fields

ldns_rr_descriptor_maximum() returns the maximum number of rdata fields of the rr type this descriptor describes.

.br descriptor: for an rr type .br Returns the maximum number of rdata fields

ldns_rr_descriptor_field_type() returns the rdf type for the given rdata field number of the rr type for the given descriptor.

.br descriptor: for an rr type .br field: the field number .br Returns the rdf type for the field

Remarks

This manpage was automatically generated from the ldns source code.

Releases

10 releases since Debian 5.0 (Lenny); the text changed 5 times.

  1. 5.0
  2. 6.0–7
  3. 8
  4. 9–10
  5. 11–12
  6. 13–Arch

Author

The ldns team at NLnet Labs.

Reporting bugs

Please report bugs to [email protected] or on GitHub at https://github.com/NLnetLabs/ldns/issues

From ldns 1.9.2-1 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.