search for: varlink

...contains named temp files, and no other processes can see it, then you have behaviour which is equivalent to mine (suggestion, that is, I don''t pretend it''s a solution until there''s been some kind of formal logical proof). > Setting a $TMPDIR is one way, making /tmp a varlink is another? I''d have to defer to Theo De Raadt on the answer to that question. He has more experience. I think setting TMPDIR would work fine, except that the processes which are using that directory are still subject to the same filesystem races which haunt us again and again. In other w...

...i.nl) wrote: > > How about allowing symlinks with "variable expansion"? > What you describe is a new kind of object. Don''t call it a symlink > - POSIX will soon tell us precisely what the semantics of symlinks > are (does the standard exist already?). Call it a varlink. New type > of object in the filesystem, new semantics. Good idea! Done. Andries, I''m deliberately interpreting your suggestion a little different than you intended. You probably meant that a new set of "flags" (file, directory, symlink, pipe, block-dev, char-dev, ... varli...

Introduction. ------------ Every now and then a new "exploit" turns up of some program that uses tmp files. The first solution was "sticky bits", but since links exist (that''s a LONG time), that solution is inadequate. Discussion. ---------- The problem is that you put an object (link/pipe) in the place where you expect a program to put its tempfile, and wait for