[Moved to haskell-cafe] On Tue, 19 Mar 2002, David Sankel wrote: > > *everytime* about race conditions. (of course using > > this existFile before > > creating a temporary file is wrong, but existFile > > has *many* other > > applications) > > Could someone post an example of the creation of a > temporary file where race conditions are important?
IIRC one of the classic issues is --------- myscript wants to create a temporary file called /tmp/storedStuff being half-careful, checks file doesn't exist (*) miniscule delay occurs creates a new file called /tmp/storedStuff --------- creating a new file generally deletes a file of the same without causing any errors since this is often the desired semantics All this is ok until a malicious person manages to get ln -s /home/sankel/reallyImportantUnbackedupData /tmp/storedStuff in the interval denoted by (*) ___cheers,_dave_________________________________________________________ www.cs.bris.ac.uk/~tweed/|`...heat generated by its microprocessors will email:[EMAIL PROTECTED]|slope upward exponentially, reaching the power work tel:(0117) 954-5250 |density of a nuclear reactor before 2010'-Intel _______________________________________________ Haskell-Cafe mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/haskell-cafe
