Hi Bruno, On Apr 18 14:47, Bruno Haible via Cygwin wrote: > Hi, > > The renameat2 function is "Linux-specific", says the man page [1]; however, > Cygwin implements it as well. > > In Cygwin 3.4.6, in a specific case, it operates differently than the > Linux function. Namely, if the old* arguments and the new* arguments > are the same and the flag RENAME_NOREPLACE is specified. > [...] > Output on Linux (glibc, musl libc): > ret=-1, errno=17=EEXIST > > Output on Cygwin 3.4.6: > ret=0 > > Note that there is some ambiguity about this case in [1]: One one hand, > there is the general statement about rename(): > "If oldpath and newpath are existing hard links referring to the > same file, then rename() does nothing, and returns a success status." > On the other hand, the text regarding RENAME_NOREPLACE says: > "Return an error if newpath already exists."
Thanks for the testcase. I guess the ambiguity doesn't matter, given it's a Linux function anyway. It makes sense to behave the same, if possible. I pushed a patch. The next test release cygwin-3.5.0-0.284.gd30a5917a9c4 will contain the patch for testing. Thanks, Corinna -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple
