The package scripts only addressed user managers that had a D-Bus user
bus socket (/run/user/<uid>/bus). Debian and Ubuntu without
dbus-user-session have none, so upgrades did not reload or restart running
user daemons and removal left them running on deleted binaries. Detect a
manager by its private socket (/run/user/<uid>/systemd/private), which
systemctl --user uses directly, and pass only XDG_RUNTIME_DIR.
Signed-off-by: trvon <me@trevon.dev>
The service is now user-bound: each user runs their own daemon with
their own config ($XDG_CONFIG_HOME/yams/config.toml), corpus
($XDG_DATA_HOME/yams) and socket ($XDG_RUNTIME_DIR/yams-daemon.sock),
which is exactly what the CLI already resolves. The system service, its
yams account/group, the group socket and the /etc/yams/config.toml
configuration go away.
- Unit: /usr/lib/systemd/user/yams-daemon.service runs
`yams-daemon --foreground` with default path resolution,
Restart=on-failure, WantedBy=default.target, and light hardening
(NoNewPrivileges, LockPersonality, RestrictRealtime, RestrictSUIDSGID,
native syscalls only). No ProtectHome/PrivateTmp: the daemon reads the
files its user adds.
- Enablement: /usr/lib/systemd/user-preset/80-yams.preset plus
`systemctl --global preset` on first install (and on upgrade from a
release with the system unit), so the unit starts with every user's
next session; administrators override with a user preset or
`systemctl --global disable`, and later upgrades keep that choice.
Package scripts never start per-user instances: they reload running
user managers, try-restart running user daemons on upgrade and stop
them on removal (`systemctl --user` via runuser per /run/user/<uid>),
then `systemctl --global disable` on removal.
- Migration from 0.20.x and the system-service design: deb preinst, rpm
%pre and Arch pre_upgrade stop and disable the old system unit while
its file is still installed (deb also purges deb-systemd-helper
state). /var/lib/yams, the old system corpus that the CLI never
reached, is left alone and documented; user corpora are never
touched.
- The sysusers entry, account creation and the deb's passwd and
init-system-helpers dependencies are dropped; the deb purge no longer
deletes /var/lib/yams.
- Install paths move to lib/systemd/user and lib/systemd/user-preset in
meson, the Arch stage/PKGBUILD and the install-surface policy.
- docs/install.md: the user service, enabling it now
(`systemctl --user enable --now`), lingering, plugins via the user's
config, opting out, upgrade and removal behaviour, and the 0.20.3
leftover.
Signed-off-by: trvon <me@trevon.dev>
The packaged yams-daemon.service ran under DynamicUser= and its
ExecStartPost chmod'ed /run/yams/yams-daemon.sock to 0666, so every
local account could read, add and delete documents in the system
corpus. It also used the deprecated PermissionsStartOnly= and a light
sandbox (ProtectSystem=full only).
The unit now runs as a static `yams` system account created from
/usr/lib/sysusers.d/yams.conf (deb postinst, rpm %post and the Arch
install script run systemd-sysusers before starting it). The daemon's
own socket mode (owner rwx, group rw) with Group=yams and UMask=0007
gives a group-only socket, and /run/yams, /var/lib/yams and
/var/log/yams are 0750, so access is granted by adding a user to the
`yams` group. The chmod and PermissionsStartOnly are gone.
Sandboxing: ProtectSystem=strict, ProtectHome, PrivateTmp,
PrivateDevices, empty CapabilityBoundingSet, kernel/clock/hostname/
cgroup protection, ProtectProc=invisible, RestrictAddressFamilies
(unix, inet, inet6, netlink), RestrictNamespaces, LockPersonality,
RemoveIPC and a @system-service syscall filter without @privileged and
@resources. MemoryDenyWriteExecute stays off for ONNX Runtime.
Package scripts: Arch pre_remove now disables as well as stops (it left
a dangling multi-user.target.wants link), and deb purge removes
/var/lib/yams and /var/log/yams, including the /var/{lib,log}/private
copies earlier DynamicUser= releases left. Upgrades keep the corpus:
systemd moves the DynamicUser= state back to /var/lib/yams on first
start under User=yams.
docs/install.md describes the group, the client socket order, and what
the sandboxed service can and cannot read.
Signed-off-by: trvon <me@trevon.dev>
