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- Path: sparky!uunet!ogicse!uwm.edu!ux1.cso.uiuc.edu!news.iastate.edu!help.cc.iastate.edu!willmore
- From: willmore@iastate.edu (David Willmore)
- Newsgroups: comp.unix.ultrix
- Subject: Re: CD-ROM is really a pseudoterminal??
- Message-ID: <willmore.722141771@help.cc.iastate.edu>
- Date: 19 Nov 92 02:56:11 GMT
- Article-I.D.: help.willmore.722141771
- References: <5435@daily-planet.concordia.ca> <1992Nov12.135412.18066@prl.dec.com> <BxMCny.DAw@newsflash.concordia.ca> <1e6rbhINNig8@ni.umd.edu> <Bxu1FJ.Axx@newsflash.concordia.ca>
- Sender: news@news.iastate.edu (USENET News System)
- Organization: Iowa State University, Ames IA
- Lines: 17
-
- I have one idea as to what might be your problem. If you had used MAKEDEV in
- an earlier installation of Ultrix, you would have the cdrom device lying arround.
- If you later rebuilt the kernel to support more ptty's and did a reboot which
- performed a MAKEDEV for the new pttys, you could have a character device and the
- original block device sharing the same major,minor pair. The problem could lie,
- this is hard to believe, in some programs using the block device call and others
- using the character device calls.
-
- Don't controls (ioctls) use the character device? I'm probably way off, but I
- thought this might be something. You can tell that I don't do much kernel
- hacking. Good luck. :)
-
- P.S. John Hascal made the comment about there being two different system
- calls for block and character devices. BTW.
-
- --David Willmore
- willmore@iastate.edu
-