Date: Wed, 11 Jun 1997 00:14:52 -0400 From: Richard Scranton <scrantr@ix.netcom.com> To: Gilles.Bruno@ujf-grenoble.fr Cc: freebsd-hackers-digest@FreeBSD.ORG Subject: Re: hackers-digest V3 #237 Message-ID: <339E263B.516B@ix.netcom.com> References: <199706110206.TAA21262@hub.freebsd.org>
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>
> {423}Root /bin/ls -a -l /usr/local/samba/var/locks
> total 60
> drwxr-xr-x 2 root wheel 512 Jan 28 11:19 .
> drwxr-xr-x 3 root wheel 512 Jan 28 11:36 ..
> -rw-rw-rw- 1 root wheel 102400 Jan 28 11:26 SHARE_MEM_FILE
> -rw-rw-rw- 1 root wheel 4294967304 Jan 28 12:04
> SHARE_MEM_FILE.processes
> ^^^^^^^^^^
> -rw-r--r-- 1 root wheel 200 Jan 28 12:04 STATUS..LCK
> -rw-r--r-- 1 root wheel 77 Jan 28 11:19 browse.dat
> -rw-r--r-- 1 root wheel 0 Jan 28 11:19 wins.dat
>
> Hike ! What's that ?
It looks to me like DOS record locking in effect. Advisory locks
are/were implemented by adding a ridiculous offset and performing
a mandatory lock. DOS didn't care that the offset for the lock
was outside the scope of the file. Clever use of a bug, I suppose.
--
===================================================================
Richard Scranton - LDA Systems - Information Management Consulting
scrantr@ix.netcom.com Columbus Cincinnati Cleveland Toledo Atlanta
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