diff options
Diffstat (limited to 'sys/dev/syscons/scvidctl.c')
| -rw-r--r-- | sys/dev/syscons/scvidctl.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/sys/dev/syscons/scvidctl.c b/sys/dev/syscons/scvidctl.c index b28752b00141..9e142d044d2f 100644 --- a/sys/dev/syscons/scvidctl.c +++ b/sys/dev/syscons/scvidctl.c @@ -36,6 +36,11 @@ #include <sys/kernel.h> #include <sys/fbio.h> #include <sys/consio.h> +#include <sys/filedesc.h> +#include <sys/lock.h> +#include <sys/sx.h> +#include <sys/mutex.h> +#include <sys/proc.h> #include <dev/fb/fbreg.h> #include <dev/syscons/syscons.h> @@ -228,7 +233,11 @@ sc_set_text_mode(scr_stat *scp, struct tty *tp, int mode, int xsize, int ysize, || tp->t_winsize.ws_row != scp->ysize) { tp->t_winsize.ws_col = scp->xsize; tp->t_winsize.ws_row = scp->ysize; - pgsignal(tp->t_pgrp, SIGWINCH, 1); + if (tp->t_pgrp != NULL) { + PGRP_LOCK(tp->t_pgrp); + pgsignal(tp->t_pgrp, SIGWINCH, 1); + PGRP_UNLOCK(tp->t_pgrp); + } } return 0; @@ -291,7 +300,11 @@ sc_set_graphics_mode(scr_stat *scp, struct tty *tp, int mode) || tp->t_winsize.ws_ypixel != scp->ypixel) { tp->t_winsize.ws_xpixel = scp->xpixel; tp->t_winsize.ws_ypixel = scp->ypixel; - pgsignal(tp->t_pgrp, SIGWINCH, 1); + if (tp->t_pgrp != NULL) { + PGRP_LOCK(tp->t_pgrp); + pgsignal(tp->t_pgrp, SIGWINCH, 1); + PGRP_UNLOCK(tp->t_pgrp); + } } return 0; @@ -423,7 +436,11 @@ sc_set_pixel_mode(scr_stat *scp, struct tty *tp, int xsize, int ysize, || tp->t_winsize.ws_row != scp->ysize) { tp->t_winsize.ws_col = scp->xsize; tp->t_winsize.ws_row = scp->ysize; - pgsignal(tp->t_pgrp, SIGWINCH, 1); + if (tp->t_pgrp != NULL) { + PGRP_LOCK(tp->t_pgrp); + pgsignal(tp->t_pgrp, SIGWINCH, 1); + PGRP_UNLOCK(tp->t_pgrp); + } } return 0; |