diff options
| author | Hans Verkuil <hans.verkuil@cisco.com> | 2013-03-27 08:04:23 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2013-04-14 19:45:23 -0300 |
| commit | cd634f1bfc182e564f33809fdca33027bb99fceb (patch) | |
| tree | e81c3b626866a64b8152576cb500ee2fc2fe40a0 /drivers/media/v4l2-core | |
| parent | dfc2e12df02d49a1567bc90989ceef870cf5b147 (diff) | |
[media] v4l2: put VIDIOC_DBG_G_CHIP_NAME under ADV_DEBUG
Only enable this ioctl if the VIDEO_ADV_DEBUG config option is set. This
prevents abuse from both userspace and kernelspace (some bridge drivers
abuse DBG_G_CHIP_IDENT, lets prevent that from happening again with this
ioctl).
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/v4l2-core')
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-dev.c | 2 | ||||
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-ioctl.c | 8 |
2 files changed, 5 insertions, 5 deletions
diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c index 670b9ca8ecbe..1c3b43cf773d 100644 --- a/drivers/media/v4l2-core/v4l2-dev.c +++ b/drivers/media/v4l2-core/v4l2-dev.c @@ -591,8 +591,8 @@ static void determine_valid_ioctls(struct video_device *vdev) SET_VALID_IOCTL(ops, VIDIOC_G_FREQUENCY, vidioc_g_frequency); SET_VALID_IOCTL(ops, VIDIOC_S_FREQUENCY, vidioc_s_frequency); SET_VALID_IOCTL(ops, VIDIOC_LOG_STATUS, vidioc_log_status); - set_bit(_IOC_NR(VIDIOC_DBG_G_CHIP_NAME), valid_ioctls); #ifdef CONFIG_VIDEO_ADV_DEBUG + set_bit(_IOC_NR(VIDIOC_DBG_G_CHIP_NAME), valid_ioctls); set_bit(_IOC_NR(VIDIOC_DBG_G_REGISTER), valid_ioctls); set_bit(_IOC_NR(VIDIOC_DBG_S_REGISTER), valid_ioctls); #endif diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 336ed2dd607c..feac07e50293 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -1873,6 +1873,7 @@ static int v4l_dbg_g_chip_ident(const struct v4l2_ioctl_ops *ops, static int v4l_dbg_g_chip_name(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { +#ifdef CONFIG_VIDEO_ADV_DEBUG struct video_device *vfd = video_devdata(file); struct v4l2_dbg_chip_name *p = arg; struct v4l2_subdev *sd; @@ -1880,12 +1881,10 @@ static int v4l_dbg_g_chip_name(const struct v4l2_ioctl_ops *ops, switch (p->match.type) { case V4L2_CHIP_MATCH_BRIDGE: -#ifdef CONFIG_VIDEO_ADV_DEBUG if (ops->vidioc_s_register) p->flags |= V4L2_CHIP_FL_WRITABLE; if (ops->vidioc_g_register) p->flags |= V4L2_CHIP_FL_READABLE; -#endif if (ops->vidioc_g_chip_name) return ops->vidioc_g_chip_name(file, fh, arg); if (p->match.addr) @@ -1904,12 +1903,10 @@ static int v4l_dbg_g_chip_name(const struct v4l2_ioctl_ops *ops, break; v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) { if (v4l_dbg_found_match(&p->match, sd, idx++)) { -#ifdef CONFIG_VIDEO_ADV_DEBUG if (sd->ops->core && sd->ops->core->s_register) p->flags |= V4L2_CHIP_FL_WRITABLE; if (sd->ops->core && sd->ops->core->g_register) p->flags |= V4L2_CHIP_FL_READABLE; -#endif strlcpy(p->name, sd->name, sizeof(p->name)); return 0; } @@ -1917,6 +1914,9 @@ static int v4l_dbg_g_chip_name(const struct v4l2_ioctl_ops *ops, break; } return -EINVAL; +#else + return -ENOTTY; +#endif } static int v4l_dqevent(const struct v4l2_ioctl_ops *ops, |