diff options
| -rw-r--r-- | sys/dev/snp/snp.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/dev/snp/snp.c b/sys/dev/snp/snp.c index 08c6c55..2365634 100644 --- a/sys/dev/snp/snp.c +++ b/sys/dev/snp/snp.c @@ -502,6 +502,9 @@ snpioctl(struct cdev *dev, u_long cmd, caddr_t data, int flags, s = *(int *)data; if (s < 0) return (snp_down(snp)); + if (snp->snp_tty != NULL) + return (EBUSY); + if (fget(td, s, &fp) != 0) return (EINVAL); if (fp->f_type != DTYPE_VNODE || |
