While starting nmbd, smbd, or winbind via systemd we see in the log files:
Jan 16 18:51:22 hip smbd: [2014/01/16 18:51:22.487860, 0] ../source3/smbd/server.c:1278(main)
Jan 16 18:51:22 hip smbd: standard input is not a socket, assuming -D option
The suggested approach to make this DEBUG statement a log level 3 message - see https://lists.samba.org/archive/samba-technical/2014-January/097304.html and https://bugzilla.novell.com/show_bug.cgi?id=857454#c23 - did not got the required acceptance by two developers. Therefore samba has to stay with a superfluous and useless extra debug message forever.
To lower the log file noise caused by this we need default sysconfig snippets looking like the following one.
## Type: string
## Default: "-D"
It would be nice if we could split up the winbindd options into a separate file. I'm happy to file an extra defect report for the content split.
winbindd behaves different than nmbd and smbd. It assumes the -D option if not present on the command line. That the documented behavior and visible from the code in source3/winbindd/winbindd.c in the while(opt) part of the main() function.
Therefore I suggest to align the default habit of both daemons.
Either by making the DEBUG statement in nmbd and smbd only a log level 3 or by modifying the winbindd code to be eloquent on the same level as the other two.
Fixes pushed to master.
Closing. If you want it backported to 4.1 please reopen :)