openntpd  6.8p1
About: OpenNTPD is a new port of OpenBSD\
About: OpenNTPD is a new port of OpenBSD’s native ntpd to other Unix flavours. It is based on portability code from the OpenSSH and LibreSSL portable projects.
  Fossies Dox: openntpd-6.8p1.tar.gz  ("unofficial" and yet experimental doxygen-generated source code documentation)  

openntpd Documentation

Some Fossies usage hints in advance:

  1. To see the Doxygen generated documentation please click on one of the items in the steelblue colored "quick index" bar above or use the side panel at the left which displays a hierarchical tree-like index structure and is adjustable in width.
  2. If you want to search for something by keyword rather than browse for it you can use the client side search facility (using Javascript and DHTML) that provides live searching, i.e. the search results are presented and adapted as you type in the Search input field at the top right.
  3. Doxygen doesn't incorporate all member files but just a definable subset (basically the main project source code files that are written in a supported language). So to search and browse all member files you may visit the Fossies openntpd-6.8p1.tar.gz contents page and use the Fossies standard member browsing features (also with source code highlighting and additionally with optional code folding).

This is the portable version of OpenBSD's native Network Time Protocol daemon, OpenNTPD

Platform Requirements

  • adjtime(2) and settimeofday(2) syscalls or equivalent.
  • adjfreq(2) or an equivalent compatibility function for best results
  • daemon(3), setresgid(2), setresuid(2) or equivalent
  • a working arc4random(2) implementation (this project shares the same arc4random compatibility code from LibreSSL)
  • libtls from LibreSSL 3.0+ is required for HTTPS time constraint validation.

Supported Operating Systems

OpenNTPD may work on other operating systems, newer and older, but the above ones are tested most recently by the developer. At the time of writing, OpenNTPD portable is known to build and work on:

  • OpenBSD (6.7)
  • Linux (Debian 10+, Ubuntu 18.04+)
  • FreeBSD (12+)
  • MacOS (10.13+)

Reports (success or otherwise) are welcome. You may report bugs or submit pull requests at the GitHub project: