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Read-only git conversion of OpenBSD's CVS src repository. This only includes the main branch; use CVS for -stable or release branches. Send any diffs to the tech@ mailing list.

146 mentions on Hacker News by 108 people: 6 stories, 140 comments · first 2016-10-17 · latest 2026-10-20

Mentions per year 146 mentions · busiest year 2022 (32)
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  1. Specifically in this script https://github.com/openbsd/src/blob/master/distrib/miniroot/... Just look for `fw_update`
    comment by rootnod3 · 2026-10-20 · in OpenBSD 8.0 release will have inteldrm/radeondrm/amdgpu drivers from Linux 6.18
  2. …are already MIT/X licensed for historical reasons, same goes for the Mesa GL and Xorg components. https://github.com/openbsd/src/tree/master/sys/dev/pci/drm
    comment by brynet · 2026-10-19 · in OpenBSD 8.0 release will have inteldrm/radeondrm/amdgpu drivers from Linux 6.18
  3. Although Theo seems to imply AI code is not welcome, this commit says Claude was used: https://github.com/openbsd/src/commit/9c2b8e445a0bdfafdd6148...
    comment by ranger_danger · 2026-10-19 · in Wine ported to OpenBSD
  4. See also BSD queue.h: https://man.openbsd.org/queue.3 https://github.com/openbsd/src/blob/master/sys/sys/queue.h
    comment by mrdomino- · 2026-10-07 · in Type Safe Generic Data Structures in C (2025)
  5. ▲ 4
    OpenBSD's hypervisor now supports guest SMP
    story by rockhardandrew · 2026-09-21 · 0 comments
  6. …to have something like OpenBSD's ed[0] or dmesg[1], which you only touch every few years or so [0] https://github.com/openbsd/src/commits/master/bin/ed [1] https://github.com/openbsd/src/commits/master/sbin/dmesg/dme...
    comment by skydhash · 2026-08-02 · in Karpathy’s Pelican
  7. …is as simple as it gets[2]. [1]: https://github.com/coreutils/coreutils/blob/master/src/yes.c [2]: https://github.com/openbsd/src/blob/master/usr.bin/yes/yes.c
    comment by rootnod3 · 2026-07-08 · in OpenBSD has a use-after-free allowing local privilege escalation to root
  8. No. https://github.com/openbsd/src/blob/d5b0ed23b6fe61f0278c37a4... Perhaps relevant, Students from the University of Southern Denmark released a paper earlier this month, which once again noted the fact that over ~90% of the OpenBSD base…
    comment by brynet · 2026-07-08 · in OpenBSD has a use-after-free allowing local privilege escalation to root
  9. …discovered that it could have been used for LPE. Again, just my guess I could be wrong. [0] https://github.com/openbsd/src/commit/1957873d2063db11dab780...
    comment by justthehuman · 2026-07-08 · in OpenBSD has a use-after-free allowing local privilege escalation to root
  10. …without checking `waitpid()` for errors. This is UB since `status` is uninitialized. ( https://github.com/openbsd/src/blob/ae684bfaed6cae797cd90e27... ) The reason is my previous experience with OpenBSD where the reply may be "<some…
    comment by thomashabets2 · 2026-05-20 · in OpenBSD 7.9
  11. In OpenBSD, with the fcntl system call https://github.com/openbsd/src/blob/master/lib/libc/gen/isat... https://man.openbsd.org/fcntl https://github.com/openbsd/src/blob/master/sys/sys/fcntl.h https://github.com/openbsd/src/blob/ba496e526752…
    comment by skydhash · 2026-02-25 · in LLM=True
  12. Is this really that hard to type? https://github.com/openbsd/src/blob/master/etc/rc.d/watchdog...
    comment by bandrami · 2026-02-03 · in Linux From Scratch ends SysVinit support
  13. …excuse to use it someday, hopefully in something high visibility so I can blow people's minds. [1] https://github.com/openbsd/src/blob/17290de/share/mk/bsd.lib... [2] https://github.com/NetBSD/src/blob/7d8184e/share/mk/bsd.lib....
    comment by wahern · 2025-10-27 · in An overengineered solution to `sort | uniq -c` with 25x throughput (hist)
  14. …I did for openbsd; it's around 700 lines, including the gunk to interface with the hypervisor. https://github.com/openbsd/src/blob/master/usr.sbin/vmd/vioq... It's not a good choice for computing diffs, but you can run your VM directly off…
    comment by ori_b · 2025-10-01 · in Blockdiff: We built our own file format for VM disk snapshots
  15. …on the other hand is extremely active, there's no way OpenSSH will be dethroned anytime soon. https://github.com/openbsd/src/commits/master/
    comment by jhatemyjob · 2025-09-27 · in SSH3: Faster and rich secure shell using HTTP/3
  16. The actual commit referred to in the mailing list: https://github.com/openbsd/src/commit/ee2db53800abe0382657ec...
    comment by LeonM · 2025-09-02 · in Raspberry Pi 5 support (OpenBSD)
  17. …you can see all data structures indexing the object. Here are some of the more common examples: https://github.com/openbsd/src/blob/master/sys/sys/queue.h https://github.com/openbsd/src/blob/master/sys/sys/tree.h sys/queue.h is actually…
    comment by ryao · 2025-08-28 · in Object-oriented design patterns in C and kernel development
  18. …code and some other breadcrumbs: 1. Apparently OpenBSD gave up on trying to fix desync'd TSCs. See https://github.com/openbsd/src/commit/78156938567f79506a923c... 2. Relevant OpenBSD kernel code: https://github.com/openbsd/src/blob/master/s…
    comment by wahern · 2025-08-18 · in OpenBSD is so fast, I had to modify the program slightly to measure itself
  19. …and write the packet header status and flags fields, and that original code is still used today: https://github.com/openbsd/src/blob/master/include/arpa/name... It does rely on implementation-defined behavior--it swaps the order of fields…
    comment by wahern · 2025-07-30 · in Writing memory efficient C structs
  20. …(glibc may be a different story). However, on OpenBSD, it did seem to have some user-visible bits: https://github.com/openbsd/src/commit/b7f6c2eb760a2da367dd51... If you expose it, someone will probably sooner or later use it, but probably…
    comment by recipe19 · 2025-07-20 · in Stdio(3) change: FILE is now opaque
  21. …Here's OpenBSD's MBR code, just for starters. It has no range checking for zero size partitions. * https://github.com/openbsd/src/blob/9213be19d4b9057bbb074ab1...
    comment by JdeBP · 2025-06-05 · in A critical look at NetBSD’s installer
  22. …and see how httpd's config [2] got started as a fork of relayd [3]. [1] http://augeas.net/ [2] https://github.com/openbsd/src/blob/master/usr.sbin/httpd/pa... [3] https://github.com/openbsd/src/blob/master/usr.sbin/relayd/p...
    comment by synack · 2025-06-02 · in Ask HN: What is our history on trying to standardize configuration languages?
  23. …is 100 times faster[3]. [1] https://github.com/coreutils/coreutils/blob/master/src/yes.c [2] https://github.com/openbsd/src/blob/master/usr.bin/yes/yes.c [3] https://www.reddit.com/r/unix/comments/6gxduc/how_is_gnu_yes...
    comment by unscaled · 2025-05-27 · in Yes-rs: A fast, memory-safe rewrite of the classic Unix yes command
  24. …mode. [1] https://en.wikipedia.org/wiki/User_space_and_kernel_space [2] Mirror is available at: https://github.com/openbsd/src/tree/master/sys/kern [3] https://github.com/openbsd/src/blob/master/sys/kern/sched_bs...
    comment by quietbritishjim · 2025-04-23 · in MinC Is Not Cygwin
  25. The "dsb nsh; isb" sequence after "svc 0" is part of OpenBSD's mitigations for Spectre. https://github.com/openbsd/src/commit/bbeaada4689520859307d5... https://github.com/openbsd/src/commit/0c401ffc2a2550c32105ce...…
    comment by jmillikin · 2025-03-12 · in A more robust raw OpenBSD syscall demo
  26. …Tries [0] and Allotment Routing Tables [1]. [0] https://news.ycombinator.com/item?id=3015246 [1] https://github.com/openbsd/src/blob/2bd42e97200bee/sys/net/a...
    comment by ignoramous · 2024-10-27 · in Using less memory to look up IP addresses in Mess With DNS
  27. …patch that added '/' protection, because that's the only character that's not allowed in filenames. https://github.com/openbsd/src/commit/46f7109a9e03df89b66ada...
    comment by ben_bai · 2024-09-24 · in OpenBSD now enforcing no invalid NUL characters in shell scripts
  28. …OpenBSD's libc asr implementation, written by Eric Faurot. https://man.openbsd.org/man3/asr_run.3 https://github.com/openbsd/src/tree/master/lib/libc/asr
    comment by brynet · 2024-09-18 · in Warning: DNS encryption in Little Snitch 6.1 may occasionally fail
  29. Seems to be a trivia quiz game included in OpenBSD. https://github.com/openbsd/src/tree/a6105854a9e3aab642e6a0fc... In datfiles/index there's a list of categories and with some interpretation you can see what they're asking. Like "chinese"…
    comment by Jtsummers · 2024-08-23 · in We have reached OpenBSD of Theseus
  30. …people have a local checkout of the repo on their local computers. URLs aren't needed (for them). https://github.com/openbsd/src/commit/a6105854a9e3aab642e6a0...
    comment by runjake · 2024-08-23 · in We have reached OpenBSD of Theseus
  31. Here's the change itself: https://github.com/openbsd/src/commit/a6105854a9e3aab642e6a0... I know that OpenBSD doesn't actually use GitHub, but it was the easiest way I could find the diff. I don't know how to otherwise get it from that…
    comment by rany_ · 2024-08-23 · in We have reached OpenBSD of Theseus
  32. …of args is 0, and uses the Linux read function to read character by character. The [OpenBSD]( https://github.com/openbsd/src/blob/master/usr.bin/wc/wc.c ) version is just *nice*. It reads from stdin by default, and uses a bit of buffering…
    comment by NunoSempere · 2024-06-20 · in Wc2: Investigates optimizing 'wc', the Unix word count program
  33. …max:600 min:15 max-sources:65536 overflow:permissive [1] https://cvsweb.openbsd.org/ [2] https://github.com/openbsd/src [3] https://www.openssh.com/portable.html [4] https://anongit.mindrot.org/openssh.git [5]…
    comment by mananaysiempre · 2024-06-07 · in OpenSSH introduces options to penalize undesirable behavior
  34. They do use CVS for version control. https://cvsweb.openbsd.org/ from their github: https://github.com/openbsd/src > Read-only git conversion of OpenBSD's official CVS src repository. Pull requests not accepted - send diffs to the tech@…
    comment by natebc · 2024-05-16 · in Add sysctl to disable Nagle's algorithm (RFC 896 – Congestion Control)
  35. …handlers by adding a new reason code, ILL_BTCFI, to SIGILL info (siginfo_t). The full patch is at https://github.com/openbsd/src/commit/88580652a3669007813512... I'm not sure if this patch is noteworthy on its own, but perhaps it was…
    comment by wahern · 2024-02-22 · in New code for SIGILL faults to help identify misbranches on OpenBSD
  36. …would be an interesting project. Here is the source code of the OpenBSD implementation of cat: > https://github.com/openbsd/src/blob/master/bin/cat/cat.c and here of the GNU coreutils implementation: >…
    comment by aleph_minus_one · 2023-12-22 · in From Nand to Tetris (2017)
  37. > I don't know how they define `MAX`, but I'm guessing it's a typical "a>b?a:b" Indeed: https://github.com/openbsd/src/blob/master/sys/sys/param.h#L... > Then `SYS_kbind` seems to be a signed int. It's an untyped #define:…
    comment by LukeShu · 2023-12-12 · in OpenBSD – pinning all system calls
  38. …really change your conclusion, but I think that’s the wrong file. This is the real doas afaict: https://github.com/openbsd/src/blob/master/usr.bin/doas/doas... Still just a tidy 1072 lines in that folder though. I spent 5 minutes staring…
    comment by xerxes901 · 2023-11-03 · in Sudo-rs' first security audit
  39. …C. sudo and doas are not equivalent in functionality, but it shows how simple things can really be. https://github.com/openbsd/src/blob/master/distrib/special/d...
    comment by cedws · 2023-11-03 · in Sudo-rs' first security audit
  40. …syscall "dispatcher" or emulator for the Perl syscall function so that it calls the libc stubs. https://github.com/openbsd/src/commit/312e26c80be876012ae979... The ports tree is being cleansed of syscall(2) usage, until they're all gone.…
    comment by notaplumber1 · 2023-10-27 · in OpenBSD: Removing syscall(2) from libc and kernel
  41. Actually, I got it wrong, too many vulnerabilities in flight. They did fix it: https://github.com/openbsd/src/commit/375ccafb2eb77de6cf240e...
    comment by dgl · 2023-10-22 · in "<ESC>[31M"? ANSI Terminal security in 2023 and finding 10 CVEs
  42. This is the commit for those curious: https://github.com/openbsd/src/commit/c778c0d73570b51def4f06... > Packets sent over loopback got their checksums calculated twice. In the output path they were filled in and during TCP/IP input all…
    comment by petee · 2023-10-16 · in OpenBSD 7.4
  43. Also, take a look at openbsd's version of yes https://github.com/openbsd/src/blob/master/usr.bin/yes/yes.c
    comment by rcr · 2023-09-09 · in Decoded: GNU Coreutils (2018)
  44. also quite interesting to compare with other implementations from the present and the past: https://github.com/openbsd/src/blob/master/usr.bin/yes/yes.c https://github.com/freebsd/freebsd-src/blob/release/4.0.0/us...
    comment by m1keil · 2023-09-09 · in Decoded: GNU Coreutils (2018)
  45. ▲ 2
    Generate Ed25519 keys when invoked without arguments
    story by Tomte · 2023-09-04 · 0 comments
  46. …looked at the source for traceroute. This heading comment is quite great and informative as well: https://github.com/openbsd/src/blob/master/usr.sbin/tracerou... They also use the event APIs to implement the loop of traceroute. Seems like…
    comment by seeknotfind · 2023-08-02 · in Traceroute isn't real
  47. For comparison, the OpenBSD version: https://github.com/openbsd/src/blob/master/usr.bin/yes/yes.c That’s a lot simpler, but also slower (see https://www.reddit.com/r/unix/comments/6gxduc/how_is_gnu_yes... , discussed in…
    comment by Someone · 2023-06-28 · in Yes command – output a string repeatedly until killed
  48. …is actually even more permissive than me when it comes to letting stuff through pledge("stdio"). https://github.com/openbsd/src/blob/fb5793d3d4d0fd4795586dd9... Also surface area isn't a weakness, it's a paradigm. If a weakness actually…
    comment by jart · 2023-06-18 · in Redbean Systems
  49. …figure out how to get the actual changes from this page, here's the commit in the github mirror... https://github.com/openbsd/src/commit/e208b5629e93dc00cc4301...
    comment by winrid · 2023-04-22 · in OpenBSD: Viogpu(4), a VirtIO GPU driver, added to -current
  50. Can't find any documentation but here is the source on the GitHub mirror of their CVS: https://github.com/openbsd/src/blob/e208b5629e93dc00cc43012e... https://github.com/openbsd/src/blob/e208b5629e93dc00cc43012e...
    comment by nazgulsenpai · 2023-04-21 · in OpenBSD: Viogpu(4), a VirtIO GPU driver, added to -current