Kconfig 947 B

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  1. # SPDX-License-Identifier: GPL-2.0-only
  2. #
  3. # Configuration for DNS Resolver
  4. #
  5. config DNS_RESOLVER
  6. tristate "DNS Resolver support"
  7. depends on KEYS
  8. help
  9. Saying Y here will include support for the DNS Resolver key type
  10. which can be used to make upcalls to perform DNS lookups in
  11. userspace.
  12. DNS Resolver is used to query DNS server for information. Examples
  13. being resolving a UNC hostname element to an IP address for CIFS or
  14. performing a DNS query for AFSDB records so that AFS can locate a
  15. cell's volume location database servers.
  16. DNS Resolver is used by the CIFS and AFS modules, and would support
  17. SMB2 later. DNS Resolver is supported by the userspace upcall
  18. helper "/sbin/dns.resolver" via /etc/request-key.conf.
  19. See <file:Documentation/networking/dns_resolver.rst> for further
  20. information.
  21. To compile this as a module, choose M here: the module will be called
  22. dnsresolver.
  23. If unsure, say N.