#11676: sage-pkg does not force world-readable permissions
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Reporter: AlexanderDreyer | Owner: AlexanderDreyer
Type: enhancement | Status: needs_info
Priority: major | Milestone: sage-4.7.2
Component: scripts | Keywords: chmod umask install mode
Work_issues: | Upstream: N/A
Reviewer: | Author: Alexander Dreyer
Merged: | Dependencies:
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Comment(by AlexanderDreyer):
Replying to [comment:23 jdemeyer]:
> Partially off-topic but highly important question: what does your
"broken" filesystem do to executable permissions? If it doesn't preserve
permissions, it might also change the executable bit which is very bad
anyway.
The (owner) execetable bit is not affected.
> Could you please tell me which OS you are using, which filesystem it is
precisely and what happens when you do
> {{{
> $ chmod 644 some_file
> $ ls -l some_file
> $ chmod 755 some_file
> $ ls -l some_file
> }}}
> on that filesystem? I'm just trying to understand the situation better
so I can find out the best fix.
It is Linux, in particular SuSE Enterprise 11, but that's not part of the
problem. The file are on an standalone file server which caches a lot of
things. It seems there is a bug in the fileserver's system or in the
driver, so that permissions are sometimes "stuck", i.e. chmod doesn't to
anything (resp. the changes last some minutes to become active).
But anyway, as I understand from #11664 the sources ''must'' be world
readable in any case. So Sage should provides a tool to ensure this while
packaging - at least optionally. Alternatively, {{{sage-pkg}}} should
test the permissions and give a warning if necessary.
BTW: For the second part of the patch - namely changing the user/group to
root - this should be done for privacy reasons anyway. (This can only be
done in the tar file)
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11676#comment:26>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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