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Subject: Re: chmod o-r clears sgid bit on directory?
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From: karlheg+xemacs@inetarena.com (Karl M. Hegbloom)
Date: 13 Jul 1997 01:12:46 -0700
In-Reply-To: Steven L Baur's message of "12 Jul 1997 23:31:38 -0700"
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>>>>> "sb" == Steven L Baur <steve@xemacs.org> writes:

    sb> Karl M Hegbloom <karlheg+debian@inetarena.com> writes:
    >> I was just useing XEmacs dired mode, in an xterm tty, as a
    >> pseudo user who owns a smartlist mailing list.

    sb> What do you mean by `psuedo user'?

 A fake user I use for testing things. `slarti'.  I've an alias for
slarti at my ISP, so that I can send mail through it while I learn
`procmail' and `smartlist'.  I've given Slartibartfast a mailing list
on my machine with `donatelist'.

    sb> Does it behave the same way on Linux 2.0?  I recall seeing bug
    sb> reports about permissions being fouled up in various
    sb> incarnations of the beta test Linux kernel.

 I don't know.  I haven't booted 2.0.30 in a long time because I like
to use the faster parport Zip driver.

 It turns out that if you are not a member of the group that owns the
directories' parent directory, even though you are owner of the
directory, the sgid bit is stripped if you chmod the directory.  I
think this is intensional, and not a bug.  (Well, the kernel must be
explicitly coded to make it do that, right?  On purpose, not by
accident.)


-- 
mailto:karlheg+sig@inetarena.com (Karl M. Hegbloom)
http://www.inetarena.com/~karlheg
Portland, OR  USA
Debian GNU 1.3  Linux 2.1.36 AMD K5 PR-133

