`copy_file_range` is limited e.g. `copy_file_range` to pipe is impossible. In the case, we should try extending stdout's pipe size by `fcntl` and `splice`. Moreover, mmap should be done for memfd to prevent `SIGBUS` when input was truncated. @dspinellis
copy_file_rangeis limited e.g.copy_file_rangeto pipe is impossible. In the case, we should try extending stdout's pipe size byfcntlandsplice.Moreover, mmap should be done for memfd to prevent
SIGBUSwhen input was truncated.@dspinellis