Rehashing My File Permissions Understanding(or lack of it)

[akonstam at trinity.edu]

On Tue, Aug 23, 2005 at 08:09:31AM -0500, Jay Paulson wrote:
> I was under the impression that changing the umask was a possible 
> security risk.  Am I correct in thinking that?
> 
> jay
Whether it is a security risk depends on what permissions you can
tolerate on your files. But a reminder. Setting the umask only limits
the minimum  permissions a file can have. It does not legislate that
the all files have that level of permissions. It can be more secure
than the umask states.
> 
> On Aug 23, 2005, at 4:06 AM, Paul Howarth wrote:
> 
> >Mark Sargent wrote:
> >>expanding on this a little...when I set the dir to g+s it makes every 
> >>file saved in the dir have the group's permissions, allowing everyone 
> >>access, but, how does one set a particular dir so that any file saved 
> >>to it, has particular permissions, like say, rwxrwxr--? Now, when I 
> >>save a new file to the dir, it saves as the default permissions, 
> >>rw-r--r--.
> >
> >You can't. You'd have to change your umask from 022 to 002 to do this, 
> >and it would affect all files/directories you created, not just the 
> >ones in that directory.
> >
> >Paul.
> >
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> >
> 
> 
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-------------------------------------------
Aaron Konstam
Computer Science
Trinity University
telephone: (210)-999-7484