Catherine's problems part II

[tomjridge]

We've encountered some other strange behavior while fuzzing as well. Whenever there is a system call of form "rename XXXX '/'" the implementation returns EBUSY, which doesn't seem to be in the SibylFS spec - could this be because of the interaction between test harness and system?

We've also had some disagreements between SibylFS and Linux when it comes to trying to open symlinks. Attached are some scripts which caused such errors. One recurring error seems to be when we try opening a symlink with the NOFOLLOW flag; according to the Linux man page and POSIX standard this should throw an ELOOP error, but SibylFS disagrees.
czuo_strange_scripts.zip

[tomjridge]

The "rename xxx /" problem is likely caused by chroot being used for the testing. dsheets?

[dsheets]

From memory, I believe on Linux, regardless of chrootness, strange operations on / return EBUSY but I have not confirmed.