linux/drivers/media/video/ivtv/ivtv-vbi.h
Andy Walls ddda424999 [media] ivtv: Return EFAULT when copy_from_user() fails in ivtv_write_vbi_from_user()
If write() on a VBI device node fails due to a bad buffer pointer from
userspace, we should notify the application properly with EFAULT, per the
V4L2 API spec.

Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-12-29 08:17:10 -02:00

35 lines
1.3 KiB
C

/*
Vertical Blank Interval support functions
Copyright (C) 2004-2007 Hans Verkuil <hverkuil@xs4all.nl>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef IVTV_VBI_H
#define IVTV_VBI_H
ssize_t
ivtv_write_vbi_from_user(struct ivtv *itv,
const struct v4l2_sliced_vbi_data __user *sliced,
size_t count);
void ivtv_process_vbi_data(struct ivtv *itv, struct ivtv_buffer *buf,
u64 pts_stamp, int streamtype);
int ivtv_used_line(struct ivtv *itv, int line, int field);
void ivtv_disable_cc(struct ivtv *itv);
void ivtv_set_vbi(unsigned long arg);
void ivtv_vbi_work_handler(struct ivtv *itv);
#endif