io::{read,write} cannot be used for std{in,out} on Windows

support returning mmap'ed array from memfd_create and sendfile or splice it

Chown fails when path is a symlink

rustix::param::linux_execfn() panics if prctl and /proc are disallowed

Allow mixing libc and raw backend on Linux (at least for linux_execfn)

mkfifo support for macOS and RedoxOS

ci: feature `asm_experimental_arch` is declared but not used

Feature Request: Add support for `IP_HDRINCL` socket option

`Event::fflags()` accessor missing for `EVFILT_READ`/`EVFILT_WRITE` kqueue events

erroneous assert encoded >= 0xf001