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Avoid explicit and housekeeping timer triggered printcap cache updates
if lp_load_printers() is disabled.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=13766
Signed-off-by: David Disseldorp <ddiss@samba.org>
Autobuild-User(master): Noel Power <npower@samba.org>
Autobuild-Date(master): Fri Feb 1 19:25:03 CET 2019 on sn-devel-144
Add the pcap_cache_loaded() check to load_printers() and return early
if it returns false. This simplifies callers in preparation for checking
lp_load_printers() in the printcap cache update code-path.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=13766
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Noel Power <npower@samba.org>
This reflects that the event context is also used outside of the server
processes.
The command used for the rename:
find . -name '*.[hc]' -print0 | xargs -0 sed -i 's/server_event_context/global_event_context/'
Signed-off-by: Christof Schmitt <cs@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
One dependency of includes.h less
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Tue Apr 24 22:26:22 CEST 2018 on sn-devel-144
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Tue Dec 5 04:58:26 CET 2017 on sn-devel-144
The only user of this is an informative message in smbcontrol. I don't think
that's worth the effort.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reschedule the housekeeping event on SIGHUP and conf reload.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Tue Apr 19 13:14:20 CEST 2016 on sn-devel-144
The printcap housekeeping callback is scheduled to run every 60 seconds,
and invokes pcap_cache_reload() to reload of the printcap cache *if* the
"printcap cache time" period has expired.
Given that pcap_cache_reload() invocation is the only job of the
housekeeping callback, it makes much more sense to schedule it every
"printcap cache time" seconds, rather than every 60 seconds.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
All printer inventory updates are currently done via
delete_and_reload_printers(), which handles registry.tdb updates for
added or removed printers, AD printer unpublishing on removal, as well
as share service creation and deletion.
This change splits this functionality into two functions such that
per-client smbd processes do not perform registry.tdb updates or printer
unpublishing. This is now only performed by the process that performs
the printcap cache update.
This change is similar to ac6604868d from
the 3.6 branch.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=10652
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Receiving a MSG_PRINTER_DRVUPGRADE causes
smbd to iterate over all printers looking
for ones that uses the driver. This is a very
expensive operation requiring a read of all
registry printer parameters.
On a system with a large number of printers,
this causes the clients to timeout (smbd
can take longer than 60 seconds to respond).
This patch fixes the problem by forwarding
the MSG_PRINTER_DRVUPGRADE to the background
lpq queue updater process and allowing it to
take care of the updating of the changeid
in the registry, allowing the smbd connected
to the client to return to processing requests
immediately.
https://bugzilla.samba.org/show_bug.cgi?id=9942
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Tue Feb 18 17:48:30 CET 2014 on sn-devel-104
If you add 200 printers using lpadmin. Then you wait for the printcap
cache to expire. As soon as this expires we notify all deamons that they
should reload the printers. This mean we need to create the default
registry keys for each printer. If you do e.g. a 'smbclient -L' during
that time you will get a lot of timeouts.
This lets the housekeeping function of the printcap cache do the task of
creating the default registry keys in background queue process. When it is done
with the task it will tell all smbd childs to reload the printers and the 200
printers appear.
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Mon Oct 1 20:28:23 CEST 2012 on sn-devel-104
The performance of these is minimal (these days) and they can return
invalid results when used as part of applications that do not use
sys_fork().
Autobuild-User: Jelmer Vernooij <jelmer@samba.org>
Autobuild-Date: Sat Mar 24 21:55:41 CET 2012 on sn-devel-104
Signed-off-by: Andreas Schneider <asn@samba.org>
Autobuild-User: Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date: Thu Aug 11 17:09:30 CEST 2011 on sn-devel-104
Be more correct in load printers at startup.
If async process have already started we do not need to force a reload, but we
just need to load the printers. If other process have not finished initializing
it makes no sense to try to force them as they are masking SIGHUP unitl init is
done anyway.
Signed-off-by: Andreas Schneider <asn@samba.org>
The cups backend forks a child to do asynchronous work.
We need a sigchld handler in bq to properly wait for the chilod to finish and
reap it, otherwise it hangs the forever as a zombie process.
Signed-off-by: Andreas Schneider <asn@samba.org>
This way we are sure the cache is primed properly and messages can be sent to
processes if necessary as all messaging has been set up.
Signed-off-by: Andreas Schneider <asn@samba.org>
Use a child for the background updater process
Forward printer update messages from spoolss to background update process.
Signed-off-by: Andreas Schneider <asn@samba.org>
This way we can properly deal with pcap updates in the background queue process
if it is enabled (on by default) and not perform these actions in the main
smbd process.
Signed-off-by: Günther Deschner <gd@samba.org>
