Date: Tue, 2 Sep 2003 12:37:21 -0700 (PDT) From: Ed Alley <alley1@llnl.gov> To: freebsd-questions@freebsd.org Message-ID: <200309021937.h82JbLY3011572@jordan.llnl.gov>
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> On Tue, 2003-09-02 at 14:32, Ed Alley wrote: >> I'm running FreeBSD-4.8. Sometimes the file permissions for /dev/null get >> mysteriously changed by some unknown process to: >> >> crw------- 1 root wheel 2, 2 Sep 2 11:20 /dev/null > On Tue, 2003-09-02 Adam McLaurin wrote: > That's very strange indeed. Have you tried using chflags to prevent the > permissions from being changed? This should do the trick, albeit a dirty > hack. Sorry, I didn't mention that I tried setting flags on /dev/null: chflags schg /dev/null What happens is that sendmail complains that it can't open /dev/null. Hey! I just realized that this may be a clue! Does sendmail fiddle with /dev/null? What happens if sendmail tries to lock /dev/null after it opens it? Does schg prevent fcntl from locking /dev/null, if that is what sendmail uses? Ed Alley
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