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Contact: Isaac Freund
Some problems blocking progress on the PkgBase project are caused by
shortcomings of pkg(8). The primary goal of my work on pkg is to unblock
PkgBase progress. However, all users of pkg will benefit even if they do not
use PkgBase.
The scheduler for pkg’s install/upgrade/delete jobs has been rewritten,
motivated by solving PR259785. The new scheduler models the scheduling problem
as a directed graph and splits upgrade jobs into delete/install halves only
when necessary to break a cycle in the graph. This formal model gives strong
guarantees about ordering that the old scheduler was not able to provide and
prevents unnecessary splitting of upgrade jobs. It also fixes longstanding bugs
where the old scheduler would bail out and cause the entire upgrade to fail.
The new scheduler is included in pkg version 1.21.99.3 (pkg-devel).
The rest of my work this quarter has been related to pkg’s automatic tracking
of shared library dependencies, which PkgBase heavily relies on. The initial
motivating problem was PR265061 but it was necessary to make more fundamental
changes to how pkg tracks shlibs before cleanly solving that problem became
possible.
When a package is created with pkg-create(8), pkg scans the included files and
generates shlibs_provided/shlibs_required lists based on the executables/shared
libraries found. Before my changes, pkg would use the elf hints file of the
host system as an input to pkg-create in order to filter out shlibs provided by
the base system from the generated shlibs_required list. An ALLOW_BASE_SHLIBS
option disabled this filtering for the purpose of building PkgBase packages.
After my changes, pkg-create no longer reads the elf hints file of the host
system and base system shlibs are included in the generated shlibs_required
list. When pkg-install(8)/pkg-upgrade(8)/etc. invoke the solver on an
non-PkgBase system, pkg generates a list of shlibs provided by the base system
as an input to the solver by scanning /lib and /usr/lib. On a PkgBase system,
the PkgBase packages provide all base system shlibs.
This allows the ALLOW_BASE_SHLIBS option to be eliminated. It also gives better
integration between the ports packages and PkgBase packages as shlib
dependencies of ports packages on PkgBase packages are now tracked rather than
ignored. Finally, this change significantly simplifies the pkg codebase and
improves portability. This change was implemented in
https://github.com/freebsd/pkg/pull/2386 and is not yet included in a pkg
release.
With that change and other internal improvements I was able to add support for
tracking lib32 and Linuxulator shlibs, which should resolve the problem that
originally motivated my work on pkg’s shlib handling (PR265061). This support
is implemented in https://github.com/freebsd/pkg/pull/2387 and is not yet
included in a pkg release.
Sponsor: The FreeBSD Foundation
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Progress on the FreeBSD installer
Links:
Improving Repair Ability of the FreeBSD Installer URL:
https://wiki.freebsd.org/SummerOfCode2024Projects/ImprovingRepai
AbilityOfTheFreeBSDInstaller
GSoC 2024 - Improving Installer with Repair and Upgrade Ability (#1395) URL:
https://github.com/freebsd/freebsd-src/pull/1395
bsdinstall: Add pkg install support in live env (#1424) URL:
https://github.com/freebsd/freebsd-src/pull/1424
bsdinstall: Add repair scripts to installer menu (#1427) URL:
https://github.com/freebsd/freebsd-src/pull/1427
Laptop and Desktop Working Group URL: https://wiki.freebsd.org/L
ptopDesktopWorkingGroup
Contact: Pierre Pronchery
As part of 2024’s GSoC Project on the FreeBSD installer, I had the pleasure
to
mentor Chun Cheng Yeh (aka "Leaf") with his implementation of additional
capabilities. The aim was to add support for repairing or updating an existing
installation of FreeBSD, as well as allowing packages to be installed in the
Live environment. This work has been consolidated into three distinct
pull-requests, available on GitHub. While some aspects probably still require
additional polishing before a possible merge, the possibility to significantly
extend the installer images into a potentially life-saving tool is within
reach.
This is particularly relevant given the ongoing efforts to improve support for
laptop and desktop use of FreeBSD. In this context, I am currently resuming
work on the graphical version of the installer. The most immediate challenge
includes shaping it suitably for integration into the next major release.
Combining the two initiatives above should help FreeBSD close some gaps with
its competition amongst other modern Operating Systems, for the enterprise as
well as for laptop and desktop use.
Sponsored by: The FreeBSD Foundation
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Kernel
Updates to kernel subsystems/features, driver support, filesystems, and more.
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Audio Stack Improvements
Contact: Christos Margiolis
The FreeBSD audio stack is one of those fields that does not attract the same
attention and development as others do, since it has been left largely
unmaintained, and, although high in quality, there is still room for
improvement — from lack of audio development frameworks, to missing
userland
utilities and kernel driver-related bugs. This project is meant to touch on all
those areas, and as such, is more of a general improvement project, than an
implementation of a specific feature.
Important work since last report:
• sound(4) and driver bug fixes, including panics and races. Several
cleanup
and refactor patches.
• Committed mididump(1). Ships with 14.2-RELEASE and 14-STABLE.
• Implementing AFMT_FLOAT support. This fixes ports, such as
emulators/wine,
that require AFMT_FLOAT support from OSS. Related bug reports: PR 184380,
PR 281390, PR 264973, PR 157050.
Future work includes:
• More bug fixes, optimizations and general improvements.
• Implement a generic MIDI layer, similar to pcm/, and improve/modernize
the
MIDI codebase in general.
• Implement a bluetooth device management utility.
• virtual_oss patches and improvements.
• Attempt to automate snd_hda(4) pin-patching.
• Investigate SOF/DMIC support.
You can also follow the development process in freebsd-multimedia@, where I
post regular reports.
Sponsor: The FreeBSD Foundation
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mac_do(4), setcred(2), mdo(1)
Contact: Olivier Certner
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