Date: Fri, 31 Jul 1998 22:18:31 +0930 From: Greg Lehey <grog@lemis.com> To: Cory Kempf <ckempf@enigami.com>, freebsd-scsi@FreeBSD.ORG Subject: Re: dev links won't open. Why? Message-ID: <19980731221831.K11960@freebie.lemis.com> In-Reply-To: <x7zpdqw6ko.fsf@singularity.enigami.com>; from Cory Kempf on Fri, Jul 31, 1998 at 08:25:27AM -0400 References: <x71zr2y571.fsf@singularity.enigami.com> <19980731162635.T7830@freebie.lemis.com> <x7zpdqw6ko.fsf@singularity.enigami.com>
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On Friday, 31 July 1998 at 8:25:27 -0400, Cory Kempf wrote: > "Greg" == Greg Lehey <grog@lemis.com> writes: >> On Friday, 31 July 1998 at 1:12:18 -0400, Cory Kempf wrote: >>> As root, create a link to a /dev/pass device, e.g. >>> >>> ln -s /dev/pass3 /dev/scanner >>> >>> Again as root, attempt to open /dev/scanner via cam_open_device. >>> >>> It fails. > >> How? What error? > > Errno is 0 > the return from cam_open_device is NULL Hmm. > Not very useful. Indeed. >>> Why? Assuming it is a bug in cam_open_device, can we get it fixed? > >> Well, it doesn't solve whatever the problem might be, but why not >> use a hard link? > > 'cause it fails the same way? That seems unlikely. In the case of a device node, a hard link is effectively a copy. But if that doesn't work, you can always recreate the node. Caveat: I haven't looked at the code, I'm just going on basic principles. Symlinks look different at the code level, hard links don't. Greg -- See complete headers for address and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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