Using SECSTOPIO for printer locking

If this isn't exactly what you wanted, please try our Search (there's a LOT of techy and non-techy stuff here about Linux, Unix, Mac OS X and just computers in general!):

From - Thu Jun 10 16:02:14 1999
Xref: world comp.unix.sco.misc:98567
From: Bob Bailin <72027.3605@CompuServe.COM>
Subject: Re: Open Server 5.0.5 spooler vs hot printer
References: <19990610131023.09800.00000104@ng-fk1.aol.com> 
Organization: .
Message-ID: <uq44D22s#GA.332@nih2naac.compuserve.com> 
Newsgroups: comp.unix.sco.misc
Date: Thu, 10 Jun 1999 14:17:34 -0400
Path: world!newsfeed.mathworks.com!news.maxwell.syr.edu!news.cis.ohio-state.edu!arl-news-svc-4.compuserve.com!news-master.compuserve.com!nntp-nih2naac.compuserve.com
Lines: 38
X-Mozilla-Status: 8011

Configure the kernel parameter SECSTOPIO = 0 to disable this feature.

dbush3054@aol.com (Dbush3054) writes:
> 
> Running Open Server 5.0.5.  Have always used the same physical printer as a
> spooler AND a hot printer (direct access from application). Our application
> creates a lock file in /tmp similar to this: /tmp/lp.lck to indicate that the
> printer is being used and blocks other users from accessing the printer until
> the lock file is remove by the application. In the past we have successfully
> modified the 'lp' script to check for the existence of this file and wait if
> necessary. The script I modified is in /usr/spool/lp/admins/lp/interfaces
> (linked to /var/spool/lp/admins/lp/interfaces). The 'lp' script was created
> when we created the spool printer 'lp' from /usr/spool/lp/model/standard).
> 
> Does not work in Open Server 5.0.5.  After putting several echo statements in
> the script, I have determined that the script file is properly waiting if the
> /tmp/lp.lck file exists. I can watch it loop endlessly until the lock file is
> removed by the application.  This works when testing because while testing I
> was not actually printing from my application, I was just selecting the printer
> to create the lock file and then the application is waiting for operator input
> (the application hasn't actually sent anything to the printer after creating
> the lock file). When I exit the application, it removes the lock file and the
> spooler then begins to print.  All is well, right ?  WRONG !!!
> 
> If the application attempts to print after the spooler script is 'looping', the
> application IMMEDIATELY gets logged off, which removes the lock file in /tmp
> and allows the spooled job to print.  I think something before the spooler
> script is closing the port, which causes my application to be logged when it
> attempts to print.
> 
> Any suggestions ???
> 
> Thanks in Advance - Dan

-- 
Bob Bailin
72027.3605@compuserve.com

Versatile Site Map Generator $59.00
A1 Sitemap Generator

Jump to Comments

Many of the products and books I review are things I purchased for my own use. Some were given to me specifically for the purpose of reviewing them. I resell or can earn commissions from the sale of some of these items. Links within these pages may be affiliate links that pay me for referring you to them. That's mostly insignificant amounts of money; whenever it is not I have made my relationship plain. I also may own stock in companies mentioned here. If you have any question, please do feel free to contact me.

Specific links that take you to pages that allow you to purchase the item I reviewed are very likely to pay me a commission. Many of the books I review were given to me by the publishers specifically for the purpose of writing a review. These gifts and referral fees do not affect my opinions; I often give bad reviews anyway.

We use Google third-party advertising companies to serve ads when you visit our website. These companies may use information (not including your name, address, email address, or telephone number) about your visits to this and other websites in order to provide advertisements about goods and services of interest to you. If you would like more information about this practice and to know your choices about not having this information used by these companies, click here.