If start smbd with DEBUG(3) level

#smbd -d3

it is printing/print_generic.c/print_run_command() additional output in log.smbd:

[2015/10/12 10:09:26, 3] printing/print_generic.c:print_run_command(88)
  Running the command `/bin/echo "print smbprn.000003.030689 on ps" > /tmp/smbprint.log' gave 81

Return value 81 show the problem in  lib/smbrun.c/smbrun():

/* now completely lose our privileges. This is a fairly paranoid
	   way of doing it, but it does work on all systems that I know of */

	become_user_permanently(uid, gid);

	if (getuid() != uid || geteuid() != uid ||
	    getgid() != gid || getegid() != gid) {
		/* we failed to lose our privileges - do not execute
                   the command */
		exit(81); /* we can't print stuff at this stage,
			     instead use exit codes for debugging */
	}

Seems User ID uid и Group ID gid setup problem in  become_user_permanently(uid, gid)

How to solve that? Thank you.



> Dear Oleg,
> 
> With yours smb.conf configuration Windows 7 and Windows XP remoute network 
> printer install and accept appropriate type of driver ( in Windows XP after 
> addition rebooting ).
> 
> > 
> > [printers]
> >         comment = Print Temporary Spool Configuration
> >         path = /var/spool/samba
> >         guest ok = Yes
> >         printable = Yes
> >         browseable = No
> > 
> > [qnx_printer]
> >         path = /tmp
> >         guest ok = Yes
> >         printable = Yes
> >         postscript = Yes
> >         print command = lp %s
> >         printer name = 123
> >         default devmode = Yes
> > 
> 
> On Windows side printing process looking as normal. In the printer spool  
> print jobs appear,
> and then removed at the completion of printing.
> 
> On QNX4 samba-server side when printing in /tmp folder trmporary files with 
> names smbprn.*.* created and then removed.
> 
> But described in smb.conf
> 
> print command = lp% s
> 
> not performed.
> 
> It is also not carried out wit another option:
> 
> print command = echo "print% s to% p" > /tmp/smbprint.log
> 
> Although issued manually 
> 
> #lp filename
> 
> works properly.
> 
> How to make the samba-server to execute the command-line configuration of the 
> "print command"?
> 
> Thank you.
> 
> 
> 
> 
> > 
> > 2. On Windows PC follow the next steps:
> > 
> > Start->Printers and faxes->Add printer->next->a network printer ->choose
> > point ”Connect to a printer or to perform a review printers”->Select
> > your priter->set it Draiver-> try print the document.
> > 
> > Let me know about your results.
> > 
> > Respectfully,
> > Oleg
> > 
> > 6 окт. 2015 г., в 6:53, Leonid Khait <community-noreply@qnx.com> написал:
> > 
> > > Hi!
> > > 
> > >> 1. How did you connect your printer to the QNX4 machine?
> > > 
> > > The printer is connected to the parallel port of the PC with QNX4 and 
> Samba-
> > server.
> > > 
> > > 
> > > 
> > >> 2. How did you configure your printer in the QNX4 (lpd or spooler)?
> > > 
> > > Printing output is configured by spooler.
> > > 
> > >> 3. Does the printer print fine directly from the QNX4?
> > > 
> > > Printout working fine directly from QNX4.
> > > 
> > >> Also add output following commands from the QNX4 machine:
> > > 
> > > The outputs with that command are attached.
> > > 
> > > # sin arg 
> > > # ls /dev
> > > 
> > >...