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63 wiersze
3.1 KiB
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<!-- received="Sun Sep 14 19:55:46 1997 MST" -->
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<!-- sent="Mon, 15 Sep 1997 00:45:53 +0200 (MET DST)" -->
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<!-- name="becka@sunserver1.rz.uni-duesseldorf.de" -->
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<!-- email="becka@sunserver1.rz.uni-duesseldorf.de" -->
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<!-- subject="Re: "Permission denied" on /dev/sga under linux?" -->
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<!-- id="m0xANQQ-000BWYC@charon.beck-sw.de" -->
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<!-- inreplyto="19970914174115.07483@tarsier.colo.erols.net" -->
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<title>sane-devel: Re: "Permission denied" on /dev/sga under linux?</title>
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<h1>Re: "Permission denied" on /dev/sga under linux?</h1>
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<a href="mailto:becka@sunserver1.rz.uni-duesseldorf.de"><i>becka@sunserver1.rz.uni-duesseldorf.de</i></a><br>
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<i>Mon, 15 Sep 1997 00:45:53 +0200 (MET DST)</i>
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<p>
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<li> <b>Messages sorted by:</b> <a href="date.html#187">[ date ]</a><a href="index.html#187">[ thread ]</a><a href="subject.html#187">[ subject ]</a><a href="author.html#187">[ author ]</a>
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<li> <b>Next message:</b> <a href="0188.html">becka@sunserver1.rz.uni-duesseldorf.de: "Re: mustek problems in lineart mode"</a>
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<li> <b>Previous message:</b> <a href="0186.html">Michael Ritzert: "Re: mustek problems in lineart mode"</a>
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<i>> I recently rebuilt my kernel and found that I can't access the scsi-generic</i><br>
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<i>> device for the HP4C scanner. The scanner probes properly, but even as root</i><br>
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<i>> any access to the /dev/sga device gives "Permission denied" and thus </i><br>
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<i>> xscanimage can't open it, even as root. </i><br>
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<p>
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<i>> pcmcia scsi interface. It all used to work perfectly, and I've been unable</i><br>
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<i>> to figure out what changed between then and now. :( </i><br>
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Have you upgraded the kernel ?<br>
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<p>
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<i>> Does anyone know if there is some circumstance under which the linux </i><br>
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<i>> scsi-generic driver will give "permission denied" even to root? </i><br>
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Let's see linux/drivers/scsis/sg.c :<br>
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<p>
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if (O_RDWR!=(flags & O_ACCMODE))<br>
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return -EACCES; <br>
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<p>
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Probably improbable. I assume sane will open RW. But check it with strace.<br>
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This is the only place I spotted where EACCES is returned. Maybe I missed<br>
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something.<br>
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<p>
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CU,Andy<br>
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<p>
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<pre>
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--
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Andreas Beck | Email : <<a href="mailto:becka@sunserver1.rz.uni-duesseldorf.de">becka@sunserver1.rz.uni-duesseldorf.de</a>>
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======== GGI - The Right Thing To Do : <a href="http://synergy.foo.net/~ggi/">http://synergy.foo.net/~ggi/</a> ========
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<p>
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<pre>
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--
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Source code, list archive, and docs: <a href="http://www.azstarnet.com/~axplinux/sane/">http://www.azstarnet.com/~axplinux/sane/</a>
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</pre>
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<li> <b>Next message:</b> <a href="0188.html">becka@sunserver1.rz.uni-duesseldorf.de: "Re: mustek problems in lineart mode"</a>
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<li> <b>Previous message:</b> <a href="0186.html">Michael Ritzert: "Re: mustek problems in lineart mode"</a>
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