Hi Artem, Actually, the preload library provides support for the basic stdio functions (e.g., fopen()). So, basic programs should work. Full support is not provided because, frankly, the stdio package is not ideal for programming high performance applications. For instance, many platform restrict the number of open files to 256 when you use stdio; which is very limiting. I know stdio is much like editors (you love what ou first get to know) but I would discourage using the fxxx() functions in general. Andy On Tue, 26 Jan 2010, Artem Trunov wrote: > Hi, > > May be a silly question, but why is there a posix preload libarary in > xrootd, but no stdio preload library? Which could be used with app using > fopen() etc. > > cheers > artem. >