Date: Tue, 2 Sep 2003 13:00:11 -0700 From: Joshua Oreman <oremanj@get-linux.org> To: Ed Alley <alley1@llnl.gov> Cc: questions@freebsd.org Subject: Re: your mail Message-ID: <20030902200011.GB23112@webserver> In-Reply-To: <200309021937.h82JbLY3011572@jordan.llnl.gov> References: <200309021937.h82JbLY3011572@jordan.llnl.gov>
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On Tue, Sep 02, 2003 at 12:37:21PM -0700 or thereabouts, Ed Alley wrote: > > > 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? No. No. No. schg prevents anyone from writing to said file/device :-( -- Josh > > Ed Alley > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org"
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