diff options
Diffstat (limited to 'sys/kern/tty.c')
| -rw-r--r-- | sys/kern/tty.c | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/sys/kern/tty.c b/sys/kern/tty.c index 7d34873e2e4dd..8a043fd215a88 100644 --- a/sys/kern/tty.c +++ b/sys/kern/tty.c @@ -36,7 +36,7 @@ * SUCH DAMAGE. * * @(#)tty.c 8.8 (Berkeley) 1/21/94 - * $Id: tty.c,v 1.105 1998/07/11 10:41:15 bde Exp $ + * $Id: tty.c,v 1.106 1998/08/19 04:01:00 bde Exp $ */ /*- @@ -90,6 +90,7 @@ #include <sys/signalvar.h> #include <sys/resourcevar.h> #include <sys/malloc.h> +#include <sys/filedesc.h> #if NSNP > 0 #include <sys/snoop.h> #endif @@ -230,6 +231,7 @@ ttyclose(tp) { int s; + funsetown(tp->t_sigio); s = spltty(); if (constty == tp) constty = NULL; @@ -756,6 +758,25 @@ ttioctl(tp, cmd, data, flag) *(int *)data = ttnread(tp); splx(s); break; + + case FIOSETOWN: + /* + * Policy -- Don't allow FIOSETOWN on someone else's + * controlling tty + */ + if (tp->t_session != NULL && !isctty(p, tp)) + return (ENOTTY); + + error = fsetown(*(int *)data, &tp->t_sigio); + if (error) + return (error); + break; + case FIOGETOWN: + if (tp->t_session != NULL && !isctty(p, tp)) + return (ENOTTY); + *(int *)data = fgetown(tp->t_sigio); + break; + case TIOCEXCL: /* set exclusive use of tty */ s = spltty(); SET(tp->t_state, TS_XCLUDE); @@ -2082,8 +2103,8 @@ ttwakeup(tp) if (tp->t_rsel.si_pid != 0) selwakeup(&tp->t_rsel); - if (ISSET(tp->t_state, TS_ASYNC)) - pgsignal(tp->t_pgrp, SIGIO, 1); + if (ISSET(tp->t_state, TS_ASYNC) && tp->t_sigio != NULL) + pgsigio(tp->t_sigio, SIGIO, (tp->t_session != NULL)); wakeup(TSA_HUP_OR_INPUT(tp)); } |