011010 9e23a9263c fix(libkernel): report urgent data in poll on macOS ...

XNU's poll never reports POLLPRI for out-of-band data, so a guest poll
that asks for it never sees the urgent byte: guest_poll aborts at the
OOB case and a title waiting on priority data would sleep to its
timeout.

On macOS the pending byte is read from SIOCATMARK, which reports it
without consuming it and has no descriptor limit, unlike the fd_set
probe this replaces. POLLRDBAND is set with POLLPRI as FreeBSD 11.4's
sopoll_generic does, and the wait takes the sliced path main already
uses for a kqueue wait, so it wakes on the next slice instead of at the
deadline.

recv(MSG_OOB | MSG_PEEK) was measured to consume the byte on macOS
27.0.1 and kevent with NOTE_OOB does not fire there, which is why the
probe is SIOCATMARK. The select and libSceNet poll paths still miss
urgent data on macOS and are recorded in the debt entry.

2026-10-26 13:00:51 -06:00

..

include

fix(net): reach the guest read through a _nid_no_patch export

2026-10-25 18:56:25 +01:00

src

fix(libkernel): report urgent data in poll on macOS

2026-10-26 13:00:51 -06:00