Hello, I'm having a problem that I cannot track down and I'm hoping that there might be an answer here. I'm writing a program to allow students submit programming assignments and have them compiled and run automatically as part of the submission process. The student will run a setuid-enabled program, handin, which will copy the files from his/her space in to mine. It's written in perl and my idea is to make a perl "system" call to the appropriate compilation command. My difficulty lies with the ownership of the files created as a result. Even though the effective UID is the class account right before the perl system functino call, the ownership of the .o files and executable is the student's. If I understand UNIX correctly this should not be, as the files should be owned by the EUID at the time. Could anybody comment on this -- or even better, help me out :-). Many thanks, Patrick healy -- http://garryowen.csisdmz.ul.ie/~healyp/
