Package: systemd Version: 259-1 Severity: normal Dear Maintainer,
systemd-binfmts unregisters binfmt_misc formats registered by update-binfmts (from the binfmt-support package). To demonstrate: 1. `apt install jarwrapper` 2. `update-binfmts --display` shows "jarwrapper (enabled)" 3. `apt install python3.14-minimal` (anything with /usr/lib/binfmt.d/*) 4. `update-binfmts --display` now shows "jarwrapper (disabled)" I believe this occurs because the installation or removal of a package with a file in /usr/lib/binfmt.d causes systemd-binfmt.service to be restarted by the systemd deb-triggers, which calls /usr/lib/systemd/systemd-binfmt, which unregisters all binfmt_misc registrations (both on stop due to --unregister and on start when called without arguments[1]). This issue affects any package with a registration in /usr/share/binfmts without a corresponding one in /usr/lib/binfmt.d. The only packages I am aware of are jarwrapper and packages providing a jexec-binfmt alternative (e.g. openjdk-*-jre-headless). Has a plan for how to handle binfmt_misc registrations in Debian been discussed? Are packages expected to provide both? Should systemd-binfmts avoid removing registrations from update-binfmts (and vice versa) or is failure to provide both a bug in the package making the registration? Thanks for considering, Kevin [1]: https://github.com/systemd/systemd/blob/v259/src/binfmt/binfmt.c#L246-L247 -- Package-specific info: -- System Information: Debian Release: forky/sid APT prefers testing-debug APT policy: (990, 'testing-debug'), (990, 'testing'), (500, 'oldoldstable-security'), (500, 'unstable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 6.18.0 (SMP w/8 CPU threads; PREEMPT) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages systemd depends on: ii libc6 2.42-11+b1 ii libssl3t64 3.5.5-1 ii libsystemd-shared 259-1 ii libsystemd0 259-1 ii mount 2.41.3-3 Versions of packages systemd recommends: ii dbus [default-dbus-system-bus] 1.16.2-3 ii linux-sysctl-defaults 4.15 ii login 1:4.16.0-2+really2.41.3-3 ii systemd-cryptsetup 259-1 ii systemd-timesyncd [time-daemon] 259-1 Versions of packages systemd suggests: pn libtss2-tcti-device0 <none> ii polkitd 127-1 pn systemd-boot <none> ii systemd-container 259-1 pn systemd-homed <none> pn systemd-repart <none> pn systemd-resolved <none> ii systemd-userdbd 259-1 Versions of packages systemd is related to: ii dbus-user-session 1.16.2-3 pn dracut <none> ii initramfs-tools 0.150 ii libnss-systemd 259-1 ii libpam-systemd 259-1 ii udev 259-1 -- no debconf information
