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- Newsgroups: comp.unix.ultrix
- Path: sparky!uunet!utcsri!newsflash.concordia.ca!alcor.concordia.ca!smw
- From: smw@alcor.concordia.ca ( Steven Winikoff )
- Subject: Re: CD-ROM is really a pseudoterminal??
- Message-ID: <BxMC7E.D3o@newsflash.concordia.ca>
- Keywords: Gak! Ugh! Pfui!
- Sender: usenet@newsflash.concordia.ca (USENET News System)
- Nntp-Posting-Host: alcor.concordia.ca
- Organization: Concordia University, Montreal, Quebec
- References: <5435@daily-planet.concordia.ca> <1992Nov12.101538.6058@dcs.warwick.ac.uk>
- Date: Thu, 12 Nov 1992 19:45:14 GMT
- Lines: 33
-
- In article <1992Nov12.101538.6058@dcs.warwick.ac.uk>, rince@dcs.warwick.ac.uk (James Bonfield) writes:
- > In <5435@daily-planet.concordia.ca> smw@alcor.concordia.ca ( Steven Winikoff ) writes:
- >
- > > crw-rw-rw- 1 root system 21, 42 Nov 11 17:28 /dev/ptyra
- > > brw------- 1 root system 21, 42 Jun 9 17:45 /dev/rz5c
- > >
- > > WHAT'S GOING ON HERE?
- >
- > Things are the same on the system I use - however, note that ptyra is a
- > character device and rz5c is a block device. My guess is that the two do not
- > cause any conflicts. Is this right?
-
- I did notice that one is a block device and one is a character device.
- However, pff obviously thinks they're equivalent. Also, while I'm
- definitely no kernel hacker, I *thought* I understood that the major
- and minor numbers are all that the kernel actually uses to identify
- a device. Aren't these numbers used to index a table of pointers to
- device driver routines? If so, the combination (21,42) should invoke
- the same driver.
-
- In any case, mount does report that the device is busy, and no other
- processes seem to be involved, other than a telnet on /dev/ptyra.
-
- I *don't* really know what's going on. That's why I'm hoping someone
- who does will help!
-
- - Steven
- ________________________________________________________________________
- Steven Winikoff | smw@ | "I don't want to run the
- Software Analyst | alcor.concordia.ca | world; I merely want to own
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