SymbX/systemd
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

sysupdate: notify hook subscribers after a successful update

Browse Source 
Define a new io.systemd.SysUpdate.Notify Varlink interface with a single
OnCompletedUpdate() method, and after sysupdate successfully installs an
update, invoke that method on every socket linked into
/run/systemd/sysupdate/notify/ via varlink_execute_directory(). This
gives other components a hook to react to applied updates (e.g. recompute
a TPM policy, link a freshly downloaded kernel, refresh extensions).

The notification carries the component name, the installed version and the
list of updated resources (transfer id + on-disk path). Subscribers are
free to ignore the parameters and just treat the call as a trigger.

Setting SYSTEMD_SYSUPDATE_FORCE_NOTIFY=1 forces the notification to be sent
even when no update was applied (in which case no resource list is included),
so follow-up work can be triggered unconditionally.

Fixes: #35988
This commit is contained in:
Lennart Poettering
2026-06-24 13:05:33 +02:00
parent 95a372a514
commit d36bdc9467
7 changed files with 132 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/basic/constants.h
+2
View File
@@ -68,6 +68,8 @@
#define VARLINK_PATH_MACHINED_RESOLVE_HOOK "/run/systemd/resolve.hook/io.systemd.Machine"
/* Path where to connect to send varlink prekill events */
#define VARLINK_DIR_OOMD_PREKILL_HOOK "/run/systemd/oomd.prekill.hook/"
/* Directory whose sockets receive io.systemd.SysUpdate.Notify() after a successful sysupdate run */
#define VARLINK_DIR_SYSUPDATE_NOTIFY_HOOK "/run/systemd/sysupdate/notify/"
/* Recommended baseline - see README for details */
#define KERNEL_BASELINE_VERSION "5.14"