lockf and the SVID, (Was "Re: Wanted: lockf system call source")

[Ben Cranston]

Requiring write permission for file locking is a good way to ensure that
malicious users can't latch up your application by setting file locks at
inopportune times...
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Ben Cranston zben @ umd2.UMD.EDU    Kingdom of Merryland UniSys 1100/92
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