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Bug 5412 - tcsh produces 'Cannot open /dev/port: Permission denied'
tcsh produces 'Cannot open /dev/port: Permission denied'
Product: Red Hat Linux
Classification: Retired
Component: util-linux (Show other bugs)
i386 Linux
medium Severity medium
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Assigned To: Crutcher Dunnavant
Depends On:
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Reported: 1999-09-28 04:51 EDT by bwess
Modified: 2008-05-01 11:37 EDT (History)
1 user (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2000-02-05 15:42:06 EST
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Description bwess 1999-09-28 04:51:32 EDT
This seems related to bug #3909.

I updated several machines from RH5.2 to 6.0 and built a
2.2.12 kernel. Now all of them show this error whenever a
tcsh is opened by a user (at all logins and even when e.g.
less calls lesspipe.sh to find out how to handle a file).
Stracing around I saw that /dev/port isn't even accessed by
the called program itself, the device seems to be accessed
somewhere else.
If the permissions are wrong (666, see 'man 4 port') the
'Permission denied' changes into a 'Operation not

Please mail me if you can't reproduce this bug.

Comment 1 Jeff Johnson 2000-01-10 15:55:59 EST
You might want to check for a use of kbdrate from util-linux. There are
some fixes in util-linux for accessing /dev/port (and PAM console is involved).

Changing component to util-linux. Please change back to tcsh if that's where the
fix needs to be.
Comment 2 Bill Nottingham 2000-02-05 15:42:59 EST
closed, lack of input.

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