On 03/23/2018 10:38 AM, Ross Burton wrote:
Please consider changing renameat2.c so that it doesn't hit syscall() if the wrapper isn't available.
That would reintroduce race-condition security holes in the ordinary build of GNU Coreutils on GNU/Linux, which would not be a good thing. Instead, how about fixing fakeroot so that it traps 'syscall' and fails with errno == ENOTSUP? Better yet, fix fakeroot so that it implements the renameat2 semantics with that syscall. (Or even better, add renameat2 to both glibc and fakeroot. :-)
