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Fix a bug where SIGIO was not being delivered to a process requesting

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async I/O when a tty device became writable.

PR:		kern/8324
Submitted by:	Don Lewis <Don.Lewis@tsc.tdk.com>
This commit is contained in:
Archie Cobbs 2000-04-05 18:38:21 +00:00
parent 680c8244a9
commit b76f24f759
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=59052
1 changed files with 2 additions and 0 deletions
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2
sys/kern/tty.c
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@ -2114,6 +2114,8 @@ ttwwakeup(tp)
if (tp->t_wsel.si_pid != 0 && tp->t_outq.c_cc <= tp->t_olowat)
selwakeup(&tp->t_wsel);
if (ISSET(tp->t_state, TS_ASYNC) && tp->t_sigio != NULL)
pgsigio(tp->t_sigio, SIGIO, (tp->t_session != NULL));
if (ISSET(tp->t_state, TS_BUSY | TS_SO_OCOMPLETE) ==
TS_SO_OCOMPLETE && tp->t_outq.c_cc == 0) {
CLR(tp->t_state, TS_SO_OCOMPLETE);