Nextcloud Manage Nextcloud using the helper script¶. Nextcloud can be set up (parameter -i) and removed (parameter -p) with the helper script included with mailcow. In order to install Nextcloud simply navigate to your mailcow-dockerized root folder and run the helper script as follows. Apr 21, 2021 Kernel Posted Apr 21, 2021 1:09 UTC (Wed) by jake. In a lengthy message to the linux-kernel mailing list, Miguel Ojeda 'introduced' the Rust for Linux project. It was likely not the first time that most kernel developers had heard of the effort; there was an extensive discussion of the project at the 2020 Linux Plumbers Conference, for example. Linux Essentials Exam 010 Exam Objectives Version: Version 1.6 Exam Code: 010-160 About Objective Weights: Each objective is assigned a weighting value. The weights indicate the relative importance of each objective on the exam. Synchronizing with Thunderbird¶. Thunderbird is a feature-rich and mature mail client that can be turned into a full-fledged PIM. However, it lacks support for address book synchronisation via CardDAV and it also lacks the ability to automatically discover calendars and address books available on the server.

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AutoarchiveReloaded

Rated 4 out of 5 stars(15)

Automatically archives old mails (Improved version of the orginal Autoarchive Add-on)

by Brummolix

SmartTemplates

Rated 4 out of 5 stars(72)

SmartTemplates offers an easy and powerful way to automatically create customized replies by auto-inserting various mail headers. Templates can be created for every mail identity, Stationery files can now be imported and used directly.

by Realraven (Axel Grude), Marky Mark DE

XNote++

Rated 5 out of 5 stars(107)

Persistent sticky notes for Thunderbird associated to mails.
In TB 78, you can define the note position in the settings. If you have a large screen, you can even display the notes outside of TB's main window, so it won't hide anything.

by Lorenz Froihofer, opto

*cloud - FileLink for Nextcloud and ownCloud

Rated 5 out of 5 stars(20)

Upload large attachments to your Cloud and send the link by email

by Johannes Endres

CardBook

Rated 4 out of 5 stars(338)

A new Thunderbird address book based on the CardDAV and vCard standards.
Twitter: @CardBookAddon

by Philippe V.

DKIM Verifier

Rated 4 out of 5 stars(30)

Verifies the DKIM-Signature of an e-mail.

by Philippe Lieser

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[$] Avoiding unintended connection failures with SO_REUSEPORT

Many of us think that we operate busy web servers; LWN's server, forexample, sweats hard when keeping up with the comment stream thataccompanies any article mentioning the Rust programming language. But someorganizations run truly busy servers and have to take someextraordinary measures to keep up with levels of traffic that even languageadvocates cannot create. The SO_REUSEPORT socket option is one ofmany features that have been added to the network stack to help these usecases. SO_REUSEPORT suffers from an implementation problem that cancause connections to fail, though. Kuniyuki Iwashima has posted a patchset addressing this problem, but there is some doubt as to whether ittakes the right approach.

Full Story (comments: 24)

[$] Toward signed BPF programs

The kernel's BPF virtual machine is versatile;it is possible to load BPF programs into the kernel to carry outa large (and growing) set of tasks. The growing body of BPF code canreasonably bethought of as kernel code in its own right. But, while the kernel cancheck signatures on loadable modules and prevent the loading of modulesthat are not properly signed, there is no such mechanism for BPF programs;any sufficiently privileged process can load any program that will pass theverifier. One might think that adding this checking for BPF would bestraightforward, but that subsystem has some unique characteristics thatmake things more challenging than one might expect. There may be asolution in the works, though; fittingly, it works by loading yet another BPFprogram.

Full Story (comments: 2)

[$] LWN.net Weekly Edition for April 22, 2021

The LWN.net Weekly Edition for April 22, 2021 is available.

Inside this week's LWN.net Weekly Edition

• Front: Intentionally buggy patches; process_vm_exec(); Fedora 34; Btrfs on zoned devices; Rust in the kernel.
• Briefs: Rust for Linux; tglx on the realtime project; Debian election results; LLVM 12; OpenSSH 8.6; GNU Assembly; Quotes; ...
• Announcements: Newsletters; conferences; security updates; kernel patches; ...

[$] Intentionally buggy commits for fame—and papers

A buggy patchposted to the linux-kernel mailing list in early April was apparently thelast straw for Greg Kroah-Hartman as it led to the planned reversion of a whole slew ofcommits with one thing in common: their origin at the University ofMinnesota (UMN). The patch to the NFSv4 authorization mechanism was dulyquestioned by two NFS developers, but it is not an honest mistake; according to Kroah-Hartman, there has been an attackof sorts underway as part of some academic research at the university. Inorder to be sure that these intentional bugs, many with securityimplications, do not continue to haunt Linux, he is workingon reverting commits that came from email addresses with theumn.edu domain.

Full Story (comments: 97)

[$] Rust heads into the kernel?

In a lengthymessage to the linux-kernel mailing list, Miguel Ojeda 'introduced' theRust for Linux project. Itwas likely not the first time that most kernel developers had heard of theeffort; there was an extensive discussionof the project at the 2020 Linux PlumbersConference, for example. It has also been raisedbefore on the list. Now, the project is looking for feedback fromthe kernel community about its plans, thus the RFC posting on April 14.

Full Story (comments: 106)

[$] Btrfs on zoned block devices

Zonedblock devices have some unfamiliar characteristics that result fromcompromises made in the name of higher storage density. They are dividedinto zones, some or all of which do not support random access for writeoperations. Instead, these 'sequential' zones can only be written inorder, from the first block to the last. This constraint poses a newchallenge for filesystems, which are normally designed with the assumptionthat storage blocks can be written in any order. It is thus not surprisingthat zoned-device support in mainstream filesystems in Linux has been slowin coming; that is changing, though, with the additionof support for zoned block devices to Btrfs in Linux 5.12.

Full Story (comments: 12)

[$] Running code within another process's address space

One of the key resources that defines a process is its address space — theset of mappings that determines what any specific memory address meanswithin that process. An address space is normally privateto the process it belongs to, but there are situations where one processneeds to make changes to another process's memory; an interactive debuggerwould be one case in point. The ptrace()system call makes such changes possible, but it is slow and not always easyto use, so there has been a longstanding quest for better alternatives.One possibility, process_vm_exec()from Andrei Vagin, was recently posted for review.

Full Story (comments: 16)

[$] Looking forward to Fedora 34

The Fedora project may have managed to shake off its reputation for delayedreleases in recent years, but that hasn't stopped the release date forFedora 34 from slippingone week to April 27. Modulo ahandful of bugs, though, this release is in its final form, so a lookat what is coming is warranted. Distribution releases, especially thosefor fast-moving community distributions, are a good point at which to catchup with the state of many free-software projects and where Linux is headedin general. Fedora 34 includes a lot of changes, including the GNOME 40 release but, for the mostpart, it looks like an exercise in continuity.

Full Story (comments: 44)

LWN.net Weekly Edition for April 15, 2021

The LWN.net Weekly Edition for April 15, 2021 is available.

Inside this week's LWN.net Weekly Edition

• Front: Debuginfod for Fedora; seccomp() and signals; NUMA-aware qspinlocks; Debian's vote; SystemTap and bpftrace.
• Briefs: FreeBSD 13; OpenStack Wallaby; HPVM 1.0; FSF on Stallman; Quotes; ...
• Announcements: Newsletters; conferences; security updates; kernel patches; ...

Enabling debuginfod for Fedora by default

In early April, Fedora program manager Ben Cotton posteda proposal to use the distribution'sdebuginfodservers by default in Fedora 35. This feature would help developerswho are trying to debug or trace their programs using various tools, but who arelacking the source code and debugging symbols needed. The serverscan provide that data directly to the tools as needed, but there are somesecurity and privacy concerns to work through before turning the feature onby default.

Full Story (comments: 4)

Security updates for Friday

Security updates have been issued by Debian (firefox-esr, openjdk-8, and wpa), openSUSE (irssi, jhead, opera, and python-django-registration), SUSE (firefox and qemu), and Ubuntu (dnsmasq and shibboleth-sp).

Full Story (comments: none)

A statement on the UMN mess

Speaking for the Linux Foundation Technical Advisory Board, Kees Cook hasposted a brief statement on the controversyover patches submitted from the University of Minnesota.

Thunderbird Nextcloud Integration

The LF Technical Advisory Board is taking a look at the history of UMN's contributions and their associated research projects. At present, it seems the vast majority of patches have been in good faith, but we're continuing to review the work. Several public conversations have already started around our expectations of contributors.

Stay tuned for more.

Full Story (comments: 65)

Ubuntu 21.04 released

The Ubuntu21.04 distribution release is available. 'Today, Canonicalreleased Ubuntu 21.04 with native Microsoft Active Directory integration,Wayland graphics by default, and a Flutter application developmentSDK. Separately, Canonical and Microsoft announced performance optimizationand joint support for Microsoft SQL Server on Ubuntu.'

Security updates for Thursday

Security updates have been issued by Debian (thunderbird and wordpress), Fedora (curl, firefox, mediawiki, mingw-binutils, os-autoinst, and rpm-ostree), Oracle (java-1.8.0-openjdk and java-11-openjdk), SUSE (kernel, pcp, and tomcat6), and Ubuntu (linux, linux-aws, linux-gke-5.3, linux-hwe, linux-kvm, linux-lts-xenial, linux-oem-5.6, linux-raspi2-5.3, linux-snapdragon).

Full Story (comments: none)

Three stable kernels

Stable kernels 5.11.16, 5.10.32, and 5.4.114 have been released. They containimportant fixes and users should upgrade.

Security updates for Wednesday

Security updates have been issued by Debian (firefox-esr, php-pear, wordpress, and zabbix), Oracle (java-1.8.0-openjdk and java-11-openjdk), Red Hat (java-1.8.0-openjdk, java-11-openjdk, kernel, and kpatch-patch), Scientific Linux (java-1.8.0-openjdk and java-11-openjdk), Slackware (seamonkey), SUSE (apache-commons-io, ImageMagick, kvm, ruby2.5, and sudo), and Ubuntu (edk2, libcaca, ntp, and ruby2.3, ruby2.5, ruby2.7).

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In the trenches with Thomas Gleixner (Linux.com)

Linux.com has published aninterview with Thomas Gleixner with a focus on the realtime preemptionwork. 'The approach to funding these kinds of projects reminds me of the Mikado Game, which is popular in Europe, where the first player who picks up the stick and disturbs the pile often is the one who loses.That’s puzzling to me, especially as many companies build key productsdepending on these technologies and seem to take the availability andsustainability for granted up to the point where such a project fails, orpeople stop working on it due to lack of funding. Such companies shouldseriously consider supporting the funding of the Real-Time project.'

Security updates for Tuesday

Security updates have been issued by Debian (xorg-server), Fedora (CImg, gmic, leptonica, mingw-binutils, mingw-glib2, mingw-leptonica, mingw-python3, nodejs, and seamonkey), openSUSE (irssi, kernel, nextcloud-desktop, python-django-registration, and thunderbird), Red Hat (389-ds:1.4, kernel, kernel-rt, perl, and pki-core:10.6), SUSE (kernel, sudo, and xen), and Ubuntu (clamav and openslp-dfsg).

Thunderbird Nextcloud Filelink

Full Story (comments: none)

OpenSSH 8.6 released

OpenSSH 8.6 is now available. The 'ssh-rsa' signature scheme, which usesthe SHA-1 hash algorithm, will be disabled by default in the nearfuture. 'Note that the deactivation of 'ssh-rsa' signatures does notnecessarily require cessation of use for RSA keys. In the SSH protocol,keys may be capable of signing using multiple algorithms. In particular,'ssh-rsa' keys are capable of signing using 'rsa-sha2-256' (RSA/SHA256),'rsa-sha2-512' (RSA/SHA512) and 'ssh-rsa' (RSA/SHA1). Only the last ofthese is being turned off by default.'

Thunderbird Nextcloud Tasks

Full Story (comments: 29)

Firefox 88.0 and 78.10 ESR

Firefox 88 has been released. Newfeatures include support for PDF forms with embedded JavaScript and smoothpinch-zooming using a touchpad, and better protection against cross-siteprivacy leaks. See thisarticle for more information on how Firefox 88 combats window.nameprivacy abuses.

Thunderbird Nextcloud Calendar

Firefox 78.10 ESR containsvarious fixes for stability, functionality, and security.