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<TITLE>sane-devel: Re: xsane requests username and password after sane</TITLE>
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<META NAME="Author" CONTENT="Oliver Rauch (oliver.rauch@rauch-domain.de)">
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<META NAME="Subject" CONTENT="Re: xsane requests username and password after saned has exited">
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<H1>Re: xsane requests username and password after saned has exited</H1>
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<!-- received="Tue Jun 5 11:13:12 2001" -->
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<!-- isoreceived="20010605181312" -->
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<!-- sent="Tue, 05 Jun 2001 17:54:44 +0200" -->
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<!-- name="Oliver Rauch" -->
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<!-- email="oliver.rauch@rauch-domain.de" -->
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<!-- subject="Re: xsane requests username and password after saned has exited" -->
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<!-- inreplyto="20010604185632.A14406@vortex.swb.de" -->
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<STRONG>From:</STRONG> Oliver Rauch (<A HREF="mailto:oliver.rauch@rauch-domain.de?Subject=Re:%20xsane%20requests%20username%20and%20password%20after%20saned%20has%20exited&In-Reply-To=<3B1D00C4.B8DBC479@rauch-domain.de>"><EM>oliver.rauch@rauch-domain.de</EM></A>)<BR>
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<STRONG>Date:</STRONG> Tue Jun 05 2001 - 08:54:44 PDT
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<P>
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<LI><STRONG>Next message:</STRONG> <A HREF="0086.html">Oliver Rauch: "Re: umax 2200 hi res scan"</A>
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<UL>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0084.html">Oliver Rauch: "Re: UMAX Vistascan S12"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0065.html">Henning Meier-Geinitz: "Re: xsane requests username and password after saned has exited"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0089.html">Nick Lamb: "Re: xsane requests username and password after saned has exited"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0068.html">Nick Lamb: "Re: xsane requests username and password after saned has exited"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0089.html">Nick Lamb: "Re: xsane requests username and password after saned has exited"</A>
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<HR NOSHADE><P>
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<P>
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Henning Meier-Geinitz wrote:
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<BR>
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<EM>>
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</EM><BR>
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<EM>> At least on Linux, saned will exit even if you kill -9 xsane. I don't
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</EM><BR>
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<EM>> understand all details but maybe that's because of signal (SIGPIPE, quit)
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</EM><BR>
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<EM>> in saned.c. So maybe this is for other platforms?
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</EM><BR>
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<P>Not only for other platforms.
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<BR>
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<P>1) When xsane crashes saned does not exit
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<BR>
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2) When the system crashes on which xsane does run saned will not exit.
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<BR>
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3) When the network connection is interrupted saned does not exit.
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<BR>
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<P><EM>>
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</EM><BR>
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<EM>> I haven't looked into details but don't we need some sort of locking for
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</EM><BR>
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<EM>> this? What happens, if some data is transmitted through the net and in
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</EM><BR>
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<EM>> this moment the forked process starts its sane_get_option_descriptor (handle, 0)
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</EM><BR>
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<EM>> function?
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</EM><BR>
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<P>Yes, we have to care about such things. So may be it could be easier
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<BR>
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to force that GUI frontends have to call a sane_control_option()
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<BR>
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e.g. every 60 seconds... but this also is not nice.
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<BR>
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<P><EM>>
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</EM><BR>
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<EM>> > May be we could define a well_known_option "create_keepalives" that can be
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</EM><BR>
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<EM>> > set by GUI-frontends, so for command-line-frontends the fork() is not called.
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> I'm not sure if this is necessary as the keep-alive shouldn't harm
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</EM><BR>
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<EM>> command-line frontends (it's just not necessary).
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</EM><BR>
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Yes, but forking means at least a lot of unnecessary memory usage.
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<BR>
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<P><EM>>
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</EM><BR>
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<EM>> I will change the alarm to 3600 seconds for now.
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</EM><BR>
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Fine.
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<BR>
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<P>Bye
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<BR>
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Oliver
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<BR>
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<P><PRE>
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--
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Homepage: <A HREF="http://www.rauch-domain.de">http://www.rauch-domain.de</A>
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sane-umax: <A HREF="http://www.rauch-domain.de/sane-umax">http://www.rauch-domain.de/sane-umax</A>
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xsane: <A HREF="http://www.xsane.org">http://www.xsane.org</A>
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E-Mail: mailto:<A HREF="mailto:Oliver.Rauch@rauch-domain.de?Subject=Re:%20xsane%20requests%20username%20and%20password%20after%20saned%20has%20exited&In-Reply-To=<3B1D00C4.B8DBC479@rauch-domain.de>">Oliver.Rauch@rauch-domain.de</A>
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<P>--
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Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
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To unsubscribe: echo unsubscribe sane-devel | mail <A HREF="mailto:majordomo@mostang.com?Subject=Re:%20xsane%20requests%20username%20and%20password%20after%20saned%20has%20exited&In-Reply-To=<3B1D00C4.B8DBC479@rauch-domain.de>">majordomo@mostang.com</A>
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</PRE>
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<!-- next="start" -->
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<LI><STRONG>Next message:</STRONG> <A HREF="0086.html">Oliver Rauch: "Re: umax 2200 hi res scan"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0084.html">Oliver Rauch: "Re: UMAX Vistascan S12"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0065.html">Henning Meier-Geinitz: "Re: xsane requests username and password after saned has exited"</A>
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<!-- nextthread="start" -->
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0089.html">Nick Lamb: "Re: xsane requests username and password after saned has exited"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0068.html">Nick Lamb: "Re: xsane requests username and password after saned has exited"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0089.html">Nick Lamb: "Re: xsane requests username and password after saned has exited"</A>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Tue Jun 05 2001 - 11:17:13 PDT</EM>
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