CVS commit: [netbsd-9] src

["Martin Husemann" <martin%netbsd.org@localhost>]

Module Name:    src
Committed By:   martin
Date:           Sat Oct  2 11:07:56 UTC 2021

Modified Files:
        src/sys/kern [netbsd-9]: uipc_socket2.c
        src/sys/miscfs/fifofs [netbsd-9]: fifo_vnops.c
        src/tests/lib/libc/sys [netbsd-9]: t_poll.c

Log Message:
Pull up following revision(s) (requested by thorpej in ticket #1350):

        sys/kern/uipc_socket2.c: revision 1.140
        tests/lib/libc/sys/t_poll.c: revision 1.5
        sys/miscfs/fifofs/fifo_vnops.c: revision 1.87

- fifo_poll(): If the last writer has disappeared, detect this and return
  POLLHUP, per POSIX.
- fifo_close(): Use the new fifo_socantrcvmore(), which is like the
  garden-variety socantrcvmore(), except it specifies POLL_HUP rather
  than POLL_IN (so the correct code for SIGIO is sent).
- sowakeup(): Allow POLL_HUP as a code (notifies poll'ers with POLLHUP).
- Add test cases for correct POLLHUP behavior with FIFOs.

Fixes PR kern/56429.


To generate a diff of this commit:
cvs rdiff -u -r1.134.2.1 -r1.134.2.2 src/sys/kern/uipc_socket2.c
cvs rdiff -u -r1.79 -r1.79.8.1 src/sys/miscfs/fifofs/fifo_vnops.c
cvs rdiff -u -r1.3 -r1.3.34.1 src/tests/lib/libc/sys/t_poll.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.