NOTES
This episode of BSDNow is brought to you by Tarsnap and the BSDNow Patreon

Headlines

FreeBSD 13.1 Release is available

Unix command line conventions over time

News Roundup

Branching for NetBSD 10

Microbyhve

Own Your Calendar & Contacts With OpenBSD, Baïkal, and FOSS Android

Twenty years ago today, Jeff filed the PSARC case for the ZFS filesystem

Tarsnap

• This weeks episode of BSDNow was sponsored by our friends at Tarsnap, the only secure online backup you can trust your data to. Even paranoids need backups.

Feedback/Questions

• Scott - FreeBSD and supercomputing
• Nick - Thanks and some shout outs

• Send questions, comments, show ideas/topics, or stories you want mentioned on the show to feedback@bsdnow.tv ***

Headlines

Tales From a Core File - Lessons from the Unix stdio ABI: 40 Years Later

On the side, I’ve been wrapping up some improvements to the classic Unix stdio libraries in illumos. stdio contains the classic functions like fopen(), printf(), and the security nightmare gets(). While working on support for fmemopen() and friends I got to reacquaint myself with some of the joys of the stdio ABI and its history from 7th Edition Unix. With that in mind, let’s dive into this, history, and some mistakes not to repeat. While this is written from the perspective of the C programming language, aspects of it apply to many other languages.

Update Lenovo X260 BIOS with OpenBSD

My X260 only runs OpenBSD and has no CD driver. But I still need to upgrade its BIOS from time to time. And this is possible using the ISO BIOS image.

First off all, you need to download the “BIOS Update (Bootable CD)” from the Lenovo Support Website.

News Roundup

The problem of Unix iowait and multi-CPU machines

Various Unixes have had a 'iowait' statistic for a long time now (although I can't find a source for where it originated; it's not in 4.x BSD, so it may have come through System V and sar). The traditional and standard definition of iowait is that it's the amount of time the system was idle but had at least one process waiting on disk IO. Rather than count this time as 'idle' (as you would if you had a three-way division of CPU time between user, system, and idle), some Unixes evolved to count this as a new category, 'iowait'.

My Latest Self Hosted Hugo Workflow using FreeBSD Jails, Caddy, Restic and More

After hosting with Netlify for a few years, I decided to head back to self hosting. Theres a few reasons for that but the main reasoning was that I had more control over how things worked.

In this post, i’ll show you my workflow for deploying my Hugo generated site (www.jaredwolff.com). Instead of using what most people would go for, i’ll be doing all of this using a FreeBSD Jails based server. Plus i’ll show you some tricks i’ve learned over the years on bulk image resizing and more.

Let’s get to it.

Extending support for the NetBSD-7 branch

Typically, some time after releasing a new NetBSD major version (such as NetBSD 9.0), we will announce the end-of-life of the N-2 branch, in this case NetBSD-7.

We've decided to hold off on doing that to ensure our users don't feel rushed to perform a major version update on any remote machines, possibly needing to reach the machine if anything goes wrong.

Security fixes will still be made to the NetBSD-7 branch.

We hope you're all safe. Stay home.

Tale of two hypervisor bugs - Escaping from FreeBSD bhyve

VM escape has become a popular topic of discussion over the last few years. A good amount of research on this topic has been published for various hypervisors like VMware, QEMU, VirtualBox, Xen and Hyper-V. Bhyve is a hypervisor for FreeBSD supporting hardware-assisted virtualization. This paper details the exploitation of two bugs in bhyve - FreeBSD-SA-16:32.bhyve (VGA emulation heap overflow) and CVE-2018-17160 (Firmware Configuration device bss buffer overflow) and some generic techniques which could be used for exploiting other bhyve bugs. Further, the paper also discusses sandbox escapes using PCI device passthrough, and Control-Flow Integrity bypasses in HardenedBSD 12-CURRENT

Beastie Bits

• GhostBSD 20.02 Overview
• FuryBSD 12.1 Overview > Joe Maloney got in touch to say that the issues in the video and other ones found have since been fixed. Now that's community feedback in action, and an example of a developer who does his best to help the community. A great guy indeed.
• OS108-9.0 amd64 MATE released
• FreeBSD hacking: carp panics & test
• Inaugural FreeBSD Office Hours

Feedback/Questions

• Shody - systemd question
• Ben - GELI and GPT
• Stig - DIY NAS

• Send questions, comments, show ideas/topics, or stories you want mentioned on the show to feedback@bsdnow.tv

This episode was brought to you by

Headlines

FreeBSD ASLR status update

• Shawn Webb gives us a little update on his address space layout randomization work for FreeBSD
• He's implemented execbase randomization for position-independent executables (which OpenBSD also just enabled globally in 5.5 on i386)
• Work has also started on testing ASLR on ARM, using a Raspberry Pi
• He's giving a presentation at BSDCan this year about his ASLR work
• While we're on the topic of BSDCan... ***

BSDCan tutorials, improving the experience

• Peter Hansteen writes a new blog post about his upcoming BSDCan tutorials
• The tutorials are called "Building the network you need with PF, the OpenBSD packet filter" and "Transitioning to OpenBSD 5.5" - both scheduled to last three hours each
• He's requesting anyone that'll be there to go ahead and contact him, telling him exactly what you'd like to learn
• There's also a bit of background information about the tutorials and how he's looking to improve them
• If you're interested in OpenBSD and going to BSDCan this year, hit him up ***

pkgsrc-2014Q1 released

• The new stable branch of pkgsrc packages has been built and is ready
• Python 3.3 is now a "first class citizen" in pkgsrc
• 14255 packages for NetBSD-current/x86_64, 11233 binary packages built with clang for FreeBSD 10/x86_64
• There's a new release every three months, and remember pkgsrc works on MANY operating systems, not just NetBSD - you could even use pkgsrc instead of pkgng or ports if you were so inclined
• They're also looking into signing packages ***

Only two holes in a heck of a long time, who cares?

• A particularly vocal Debian user, a lost soul, somehow finds his way to the misc@ OpenBSD mailing list
• He questions "what's the big deal" about OpenBSD's slogan being "Only two remote holes in the default install, in a heck of a long time!"
• Luckily, the community and Theo set the record straight about why you should care about this
• Running insecure applications on OpenBSD is actually more secure than running them on other systems, due to things like ASLR, PIE and all the security features of OpenBSD
• It spawned a discussion about ease of management and Linux's poor security record, definitely worth reading ***

Interview - Dru Lavigne - dru@freebsd.org / @bsdevents

FreeBSD's documentation printing, documentation springs, various topics

Tutorial

Automatic, unattended OpenBSD installs with PXE

News Roundup

pfSense 2.1.1 released

• A new version of pfSense is released, mainly to fix some security issues
• Tracking some recent FreeBSD advisories, pfSense usually only applies the ones that would matter on a firewall or router
• There are also some NIC driver updates and other things
• Of course if you want to learn more about pfSense, watch episode 25
• 2.1.2 is already up for testing too ***

FreeBSD gets UEFI support

• It looks like FreeBSD's battle with UEFI may be coming to a close?
• Ed Maste committed a giant list of patches to enable UEFI support on x86_64
• Look through the list to see all the details and information
• Thanks FreeBSD foundation! ***

Ideas for the next DragonflyBSD release

• Mr. Dragonfly release engineer himself, Justin Sherrill posts some of his ideas for the upcoming release
• They're aiming for late May for the next version
• Ideas include better support for running in a VM, pkgng fixes, documentation updates and PAM support
• Gasp, they're even considering dropping i386 ***

PCBSD weekly digest

• Lots of new PBI updates for 10.0, new runtime implementation
• New support for running 32 bit applications in PBI runtime
• New default CD and DVD player, umplayer
• Latest GNOME 3 and Cinnamon merged, new edge package builds ***

Feedback/Questions

• Remy writes in
• Jan writes in
• Eddie writes in
• Zen writes in
• Sean writes in ***

This episode was brought to you by

Headlines

FreeBSD quarterly status report

• Gabor Pali sent out the October-December 2013 status report to get everyone up to date on what's going on
• The report contains 37 entries and is very very long... various reports from all the different teams under the FreeBSD umbrella, probably too many to even list in the show notes
• Lots of work going on in the ARM world, EC2/Xen and Google Compute Engine are also improving
• Secure boot support hopefully coming [by mid-year](www.itwire.com/business-it-news/open-source/62855-freebsd-to-support-secure-boot-by-mid-year)
• There's quite a bit going on in the FreeBSD world, many projects happening at the same time ***

n2k14 OpenBSD Hackathon Report

• Recently, OpenBSD held one of their hackathons in New Zealand
• 15 developers gathered there to sit in a room and write code for a few days
• Philip Guenther brings back a nice report of the event
• If you've been watching the -current CVS logs, you've seen the flood of commits just from this event alone
• Fixes with threading, Linux compat, ACPI, and various other things - some will make it into 5.5 and others need more testing
• Another report from Theo details his work
• Updates to the random subsystem, some work-in-progress pf fixes, suspend/resume fixes and more signing stuff ***

Four new NetBSD releases

• NetBSD released versions 6.1.3, 6.0.4, 5.2.2 and 5.1.4
• These updates include lots of bug fixes and some security updates, not focused on new features
• You can upgrade depending on what branch you're currently on
• Confused about the different branches? See this graph. ***

The future of open source ZFS development

• On February 11, 2014, Matt Ahrens will be giving a presentation about ZFS
• The talk will be about the future of ZFS and the open source development since Oracle closed the code
• It's in San Jose, California - go if you can! ***

Interview - George Neville-Neil - gnn@freebsd.org / @gvnn3

The FreeBSD Journal

Tutorial

Tracking -STABLE and -CURRENT (OpenBSD)

News Roundup

pfSense news and 2.1.1 snapshots

• pfSense has some snapshots available for the upcoming 2.1.1 release
• They include FreeBSD security fixes as well as some other updates
• There are recordings posted of some of the previous hangouts
• Unfortunately they're only for subscribers, so you'll have to wait until next month when we have Chris on the show to talk about pfSense! ***

FreeBSD on Google Compute Engine

• Recently we mentioned some posts about getting OpenBSD to run on GCE, here's the FreeBSD version
• Nice big fat warning: "The team has put together a best-effort posting that will get most, if not all, of you up and running. That being said, we need to remind you that FreeBSD is being supported on Google Compute Engine by the community. The instructions are being provided as-is and without warranty."
• Their instructions are a little too Linuxy (assuming wget, etc.) for our taste, someone should probably get it updated!
• Other than that it's a pretty good set of instructions on how to get up and running ***

Dragonfly ACPI update

• Sascha Wildner committed some new ACPI code
• There's also a "heads up" to update your BIOS if you experience problems
• Check the mailing list post for all the details ***

PCBSD weekly digest

• 10.0-RC4 users need to upgrade all their packages for 10.0-RC5
• PBIs needed to be rebuilt.. actually everything did
• Help test GNOME 3 so we can get it in the official ports tree
• By the way, I think Kris has an announcement - PCBSD 10.0 is out! ***

Feedback/Questions

• Tony writes in
• Jeff writes in
• Remy writes in
• Nils writes in
• Solomon writes in ***