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LWN.net is a comprehensive source of news and opinions from and about the Linux community. This is the main LWN.net feed, listing all articles which are posted to the site front page.
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Sandboxing in Linux with zero lines of code (Cloudflare blog)

수, 2020/07/08 - 11:36오후
The Cloudflare blog is running an overview of sandboxing with seccomp(), culminating in a tool written there to sandbox any existing program. "We really liked the 'zero code seccomp' approach with systemd SystemCallFilter= directive, but were not satisfied with its limitations. We decided to take it one step further and make it possible to prohibit any system call in any process externally without touching its source code, so came up with the Cloudflare sandbox. It’s a simple standalone toolkit consisting of a shared library and an executable. The shared library is supposed to be used with dynamically linked applications and the executable is for statically linked applications."
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[$] Hugo: a static-site generator

수, 2020/07/08 - 8:28오전
Static web-site generators take page content written in a markup language and render it into fully baked HTML, making it easy for developers to upload the result and serve a web site simply and securely. This article looks at Hugo, a static-site generator written in Go and optimized for speed. It is a flexible tool that can be configured for a variety of use cases: simple blogs, project documentation, larger news sites, and even government services.
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[$] Sleepable BPF programs

수, 2020/07/08 - 2:20오전
When support for classic BPF was added to the kernel many years ago, there was no question of whether BPF programs could block in their execution. Their functionality was limited to examining a packet's contents and deciding whether the packet should be forwarded or not; there was nothing such a program could do to block. Since then, BPF has changed a lot, but the assumption that BPF programs cannot sleep has been built deeply into the BPF machinery. More recently, classic BPF has been pushed aside by the extended BPF dialect; the wider applicability of extended BPF is now forcing a rethink of some basic assumptions.
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Security updates for Tuesday

화, 2020/07/07 - 11:46오후
Security updates have been issued by Debian (php7.3), Fedora (gst), Mageia (libvirt, mariadb, pdns-recursor, and ruby), openSUSE (chocolate-doom, coturn, kernel, live555, ntp, python3, and rust, rust-cbindgen), Oracle (virt:ol), Red Hat (file, firefox, gettext, kdelibs, kernel, kernel-alt, microcode_ctl, nghttp2, nodejs:10, nodejs:12, php, qemu-kvm, ruby, and tomcat), SUSE (libjpeg-turbo, mozilla-nspr, mozilla-nss, mozilla-nss, nasm, openldap2, and permissions), and Ubuntu (coturn, glibc, nss, and openexr).
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[$] Home Assistant improves performance in 0.112 release

화, 2020/07/07 - 2:23오전
The Home Assistant project has released version 0.112 of the open-source home automation hub we have previously covered, which is the eighth release of the project this year. While previous releases have largely focused on new integrations and enhancements to the front-end interface, in this release the focus has shifted more toward improving the performance of the database. It is important to be aware that there are significant database changes and multiple potential backward compatibility breaks to understand before attempting an upgrade to take advantage of the improvements.
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Security updates for Monday

월, 2020/07/06 - 11:37오후
Security updates have been issued by Debian (chromium, php7.0, and thunderbird), Fedora (ceph, gssdp, gupnp, libfilezilla, libldb, mediawiki, python-pillow, python36, samba, and xpdf), Mageia (curl, docker, firefox, libexif, libupnp, libvncserver, libxml2, mailman, ntp, perl-YAML, python-httplib2, tcpreplay, tomcat, and vlc), openSUSE (chocolate-doom, python3, and Virtualbox), Slackware (libvorbis), and SUSE (mozilla-nspr, mozilla-nss, systemd, tomcat, and zstd).
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