Date: Mon, 19 May 1997 10:36:18 +0200 From: j@uriah.heep.sax.de (J Wunsch) To: freebsd-scsi@FreeBSD.ORG Cc: henrich@crh.cl.msu.edu (Charles Henrich) Subject: Re: scsi library interface Message-ID: <19970519103618.LH45116@uriah.heep.sax.de> In-Reply-To: <19970518184034.10726@crh.cl.msu.edu>; from Charles Henrich on May 18, 1997 18:40:34 -0400 References: <19970518184034.10726@crh.cl.msu.edu>
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As Charles Henrich wrote: > Who wrote the scsi interface commands? (e.g. scsi_open, scsi_build > ..) I need to bang on them with some questions. Peter Dufault. He's also got a revamped library which he was asking people to test. It's on hub's anon ftp area, if i'm not mistaken. > Also, in general when do you use raw mode devices vs. block mode vs > the .ctl devices? Buffered (`block') devices: to mount a filesystem over them. Nothing else. (Well, swapon(8) is in the same boat.) Raw (`character') devices: any other regular (i.e. read(2)/write(2)) IO. Control devices: raw SCSI commands. State of the device doesn't matter then, e.g. you can open a control device for an unformatted disk, but you can't open the raw or buffered device. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)
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