[devel] [PATCH for rpm v3] Add triggers circumvension for packagekit offline update

[Aleksei Nikiforov <darktemplar@altlinux.org>]

packagekit offline update is implemented in following way:
1) system is preparing for offline update:
   all new installed packages are downloaded, etc.
2) system is rebooting into special systemd offline update mode
   upon user request.
3) in this offline update mode packagekit offline update service is performing
   system update using packagekit service activated via dbus.
4) Last step of systemd offline update is a reboot request.
   It must be made by offline update service.
   And packagekit offline update service does request it.

Thus, rpmdb --rebuilddb from rpm scripts would be in race against reboot request.
Testing showed that it doesn't work properly in such conditions.
In best case, rpmdb --rebuilddb doesn't do anything at all before reboot happens.
Instead of hoping to get it work properly in such conditions,
disabling it in rpm scripts and calling it right after update
but before reboot request from packagekit offline update works fine.

Joint change with Oleg Solovyov (mcpain@)
---
 alt/rpm.spec | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/alt/rpm.spec b/alt/rpm.spec
index 6217493b7..a38367ffd 100644
--- a/alt/rpm.spec
+++ b/alt/rpm.spec
@@ -385,6 +385,10 @@ ls -A tests/rpmtests.dir 2>/dev/null ||:
 #[ ! -L %%_rpmlibdir/noarch-alt-%%_target_os ] || rm -f %%_rpmlibdir/noarch-alt-%%_target_os ||:
 
 %post
+if [ -f %_localstatedir/PackageKit/disable-rpm-triggers ]; then
+        exit 0
+fi
+
 #chgrp %%name %%_localstatedir/%%name/[A-Z]*
 [ -n "$DURING_INSTALL" -o -n "$BTE_INSTALL" ] ||
         %_rpmlibdir/pdeath_execute $PPID %_rpmlibdir/postupdate
-- 
2.21.0