Bug 4603 - user id's over 2^16 don't work
user id's over 2^16 don't work
Status: CLOSED WONTFIX
Product: Red Hat Linux
Classification: Retired
Component: basesystem (Show other bugs)
6.0
i386 Linux
medium Severity high
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Assigned To: David Lawrence
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Reported: 1999-08-18 20:15 EDT by jay_lyerly
Modified: 2008-05-01 11:37 EDT (History)
0 users

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Last Closed: 1999-08-21 16:10:36 EDT
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Description jay_lyerly 1999-08-18 20:15:03 EDT
User id's with values greater than 65536 ( or is it 65535? )
don't work.  For instance, I can create a user with uid
100,000.  That user can't log in.  Watching syslog during
the login shows a session open for the user, then
immediately close.  'su' spits at the username with a
invalid arguement error and refuses to set the userid to
100,000.

This has become an issue at NCSU where the eos/unity system
now has ~70,000 users.
Comment 1 Bill Nottingham 1999-08-21 16:10:59 EDT
The kernel's UID type is only 16 bits. Sorry. When this
is fixed in the kernel, it will work elsewhere.

You might try experimental 32-bit uid support, available at:
http://www.engin.umich.edu/caen/systems/Linux/highuids

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