I am continuing to port GT.M to Cygwin (https://www.fisglobal.com/solutions/banking-and-wealth/services/database-engine).
The database has a suid program that is marked u+s (root suid) on the file permissions so that it can run as root whenever invoked. One of the first things it does is cd to another directory that is owned by root and is not accessible by anybody else. Cygwin doesn't have the concept of root; so I am trying to implement this by sgid into the Adminstrators group (544) from a limited user account (i.e., set-up that way on Windows). The executable, instead of being suid root, is sgid Adminstrators. The sgid C call apparently succeeds when I run it from gdb, but the C chdir instruction fails. I read https://cygwin.com/cygwin-ug-net/ntsec.html; but haven't done anything it says. After all, the sgid call apparently succeeded. My question is: am I on the right path; or is Windows and Cygwin being reasonable in denying my request to chdir when the user is not a member of the Administrators group, in spite of the executable being sgid Administrators? --Sam -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
