fs: add rename infrastructure

The selection for *rename as the name for the rename/move operation
derives from the POSIX specification where they name the function
rename/renameat. [1] This aligns with Linux where the syscalls for
renaming/moving also use the rename/renameat naming.

[1] https://pubs.opengroup.org/onlinepubs/9799919799/functions/rename.html

Signed-off-by: Gabriel Dalimonte <gabriel.dalimonte@gmail.com>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2 files changed