diff options
| author | jhb <jhb@FreeBSD.org> | 2001-03-07 03:37:06 +0000 |
|---|---|---|
| committer | jhb <jhb@FreeBSD.org> | 2001-03-07 03:37:06 +0000 |
| commit | 9cd254601baefc2dc9c953abe9747717374ff8b1 (patch) | |
| tree | ac4298224e8af28e8b2f904a43a2925c21dfc798 /sys/dev/syscons | |
| parent | ace71d59bf35fa6d911520ec855d0100773422a8 (diff) | |
| download | FreeBSD-src-9cd254601baefc2dc9c953abe9747717374ff8b1.zip FreeBSD-src-9cd254601baefc2dc9c953abe9747717374ff8b1.tar.gz | |
Grab the process lock while calling psignal and before calling psignal.
Diffstat (limited to 'sys/dev/syscons')
| -rw-r--r-- | sys/dev/syscons/scmouse.c | 4 | ||||
| -rw-r--r-- | sys/dev/syscons/syscons.c | 4 |
2 files changed, 8 insertions, 0 deletions
diff --git a/sys/dev/syscons/scmouse.c b/sys/dev/syscons/scmouse.c index 7bac404..30a983e 100644 --- a/sys/dev/syscons/scmouse.c +++ b/sys/dev/syscons/scmouse.c @@ -765,7 +765,9 @@ sc_mouse_ioctl(struct tty *tp, u_long cmd, caddr_t data, int flag, cur_scp->mouse_proc = NULL; cur_scp->mouse_pid = 0; } else { + PROC_LOCK(cur_scp->mouse_proc); psignal(cur_scp->mouse_proc, cur_scp->mouse_signal); + PROC_UNLOCK(cur_scp->mouse_proc); break; } } @@ -818,7 +820,9 @@ sc_mouse_ioctl(struct tty *tp, u_long cmd, caddr_t data, int flag, cur_scp->mouse_proc = NULL; cur_scp->mouse_pid = 0; } else { + PROC_LOCK(cur_scp->mouse_proc); psignal(cur_scp->mouse_proc, cur_scp->mouse_signal); + PROC_UNLOCK(cur_scp->mouse_proc); break; } } diff --git a/sys/dev/syscons/syscons.c b/sys/dev/syscons/syscons.c index 452c8e0..631daa4 100644 --- a/sys/dev/syscons/syscons.c +++ b/sys/dev/syscons/syscons.c @@ -2300,7 +2300,9 @@ signal_vt_rel(scr_stat *scp) if (scp->smode.mode != VT_PROCESS) return FALSE; scp->status |= SWITCH_WAIT_REL; + PROC_LOCK(scp->proc); psignal(scp->proc, scp->smode.relsig); + PROC_UNLOCK(scp->proc); DPRINTF(5, ("sending relsig to %d\n", scp->pid)); return TRUE; } @@ -2313,7 +2315,9 @@ signal_vt_acq(scr_stat *scp) if (scp->sc->unit == sc_console_unit) cons_unavail = TRUE; scp->status |= SWITCH_WAIT_ACQ; + PROC_LOCK(scp->proc); psignal(scp->proc, scp->smode.acqsig); + PROC_UNLOCK(scp->proc); DPRINTF(5, ("sending acqsig to %d\n", scp->pid)); return TRUE; } |
