I can't reproduce this... Trying the following works: christos
screen -S ses -d -m -p 0 cat screen -S sys -X quit > On Jan 4, 2022, at 6:45 AM, RVP <r...@sdf.org> wrote: > > On Mon, 3 Jan 2022, Christos Zoulas wrote: > >> Yes, in the end screen was at fault for setting CLOCAL in the pty which >> prevented from SIGHUP from being sent. I fixed it. >> > > I think the problem may be that in canonical mode, the slave goes to > sleep waiting for input (in tty.c:ttread()) and nothing wakes it up > when the master side is closed. The patch below seems to work, but, > please scrutinize it carefully as I've only tested it lightly and I'm > also operating without a license :) > > ---START PATCH--- > --- sys/kern/tty_pty.c.orig 2021-10-11 04:12:12.543371554 +0000 > +++ sys/kern/tty_pty.c 2022-01-04 11:08:51.163444059 +0000 > @@ -637,6 +637,7 @@ > mutex_spin_enter(&tty_lock); > CLR(tp->t_state, TS_CARR_ON); > tp->t_oproc = NULL; /* mark closed */ > + cv_broadcast(&tp->t_rawcv); /* wake-up slave */ > mutex_spin_exit(&tty_lock); > return 0; > } > ---END PATCH--- > > -RVP
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