diff options
| author | Andy Walls <awalls@md.metrocast.net> | 2010-12-20 03:59:56 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-12-29 13:17:10 +0300 |
| commit | ddda424999817fbc17adf9013feb066903382ede (patch) | |
| tree | 1f75abf4d6a4814519b74fce450296cd495ba56e /drivers/media/video/ivtv/ivtv-vbi.h | |
| parent | b0c45686c8e8aecc7b0cd04d9b6af48d74418d53 (diff) | |
| download | linux-ddda424999817fbc17adf9013feb066903382ede.tar.xz | |
[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>
Diffstat (limited to 'drivers/media/video/ivtv/ivtv-vbi.h')
| -rw-r--r-- | drivers/media/video/ivtv/ivtv-vbi.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/media/video/ivtv/ivtv-vbi.h b/drivers/media/video/ivtv/ivtv-vbi.h index eda38d0ad7ce..166dd0b75d0f 100644 --- a/drivers/media/video/ivtv/ivtv-vbi.h +++ b/drivers/media/video/ivtv/ivtv-vbi.h @@ -20,9 +20,10 @@ #ifndef IVTV_VBI_H #define IVTV_VBI_H -void ivtv_write_vbi_from_user(struct ivtv *itv, - const struct v4l2_sliced_vbi_data __user *sliced, - size_t count); +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); |