Patch "media: v4l2-compat-ioctl32.c: move 'helper' functions to __get/put_v4l2_format32" has been added to the 3.18-stable tree

From: gregkh
Date: Wed Apr 04 2018 - 11:35:46 EST


This is a note to let you know that I've just added the patch titled

media: v4l2-compat-ioctl32.c: move 'helper' functions to __get/put_v4l2_format32

to the 3.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
media-v4l2-compat-ioctl32.c-move-helper-functions-to-__get-put_v4l2_format32.patch
and it can be found in the queue-3.18 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From foo@baz Wed Apr 4 17:30:18 CEST 2018
From: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>
Date: Wed, 28 Mar 2018 15:12:24 -0300
Subject: media: v4l2-compat-ioctl32.c: move 'helper' functions to __get/put_v4l2_format32
To: Linux Media Mailing List <linux-media@xxxxxxxxxxxxxxx>, stable@xxxxxxxxxxxxxxx
Cc: Hans Verkuil <hans.verkuil@xxxxxxxxx>, Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>, Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Message-ID: <eba66edbe4ca94e61e342683ee5e225f376d754c.1522260310.git.mchehab@xxxxxxxxxxxxxxxx>

From: Hans Verkuil <hans.verkuil@xxxxxxxxx>

commit 486c521510c44a04cd756a9267e7d1e271c8a4ba upstream.

These helper functions do not really help. Move the code to the
__get/put_v4l2_format32 functions.

Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Acked-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 84 ++++----------------------
1 file changed, 16 insertions(+), 68 deletions(-)

--- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
@@ -89,64 +89,6 @@ static int put_v4l2_window32(struct v4l2
return 0;
}

-static inline int get_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up)
-{
- if (copy_from_user(kp, up, sizeof(struct v4l2_pix_format)))
- return -EFAULT;
- return 0;
-}
-
-static inline int get_v4l2_pix_format_mplane(struct v4l2_pix_format_mplane *kp,
- struct v4l2_pix_format_mplane __user *up)
-{
- if (copy_from_user(kp, up, sizeof(struct v4l2_pix_format_mplane)))
- return -EFAULT;
- return 0;
-}
-
-static inline int put_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up)
-{
- if (copy_to_user(up, kp, sizeof(struct v4l2_pix_format)))
- return -EFAULT;
- return 0;
-}
-
-static inline int put_v4l2_pix_format_mplane(struct v4l2_pix_format_mplane *kp,
- struct v4l2_pix_format_mplane __user *up)
-{
- if (copy_to_user(up, kp, sizeof(struct v4l2_pix_format_mplane)))
- return -EFAULT;
- return 0;
-}
-
-static inline int get_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up)
-{
- if (copy_from_user(kp, up, sizeof(struct v4l2_vbi_format)))
- return -EFAULT;
- return 0;
-}
-
-static inline int put_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up)
-{
- if (copy_to_user(up, kp, sizeof(struct v4l2_vbi_format)))
- return -EFAULT;
- return 0;
-}
-
-static inline int get_v4l2_sliced_vbi_format(struct v4l2_sliced_vbi_format *kp, struct v4l2_sliced_vbi_format __user *up)
-{
- if (copy_from_user(kp, up, sizeof(struct v4l2_sliced_vbi_format)))
- return -EFAULT;
- return 0;
-}
-
-static inline int put_v4l2_sliced_vbi_format(struct v4l2_sliced_vbi_format *kp, struct v4l2_sliced_vbi_format __user *up)
-{
- if (copy_to_user(up, kp, sizeof(struct v4l2_sliced_vbi_format)))
- return -EFAULT;
- return 0;
-}
-
struct v4l2_format32 {
__u32 type; /* enum v4l2_buf_type */
union {
@@ -184,20 +126,23 @@ static int __get_v4l2_format32(struct v4
switch (kp->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
- return get_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix);
+ return copy_from_user(&kp->fmt.pix, &up->fmt.pix,
+ sizeof(kp->fmt.pix)) ? -EFAULT : 0;
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
- return get_v4l2_pix_format_mplane(&kp->fmt.pix_mp,
- &up->fmt.pix_mp);
+ return copy_from_user(&kp->fmt.pix_mp, &up->fmt.pix_mp,
+ sizeof(kp->fmt.pix_mp)) ? -EFAULT : 0;
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
return get_v4l2_window32(&kp->fmt.win, &up->fmt.win);
case V4L2_BUF_TYPE_VBI_CAPTURE:
case V4L2_BUF_TYPE_VBI_OUTPUT:
- return get_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi);
+ return copy_from_user(&kp->fmt.vbi, &up->fmt.vbi,
+ sizeof(kp->fmt.vbi)) ? -EFAULT : 0;
case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
- return get_v4l2_sliced_vbi_format(&kp->fmt.sliced, &up->fmt.sliced);
+ return copy_from_user(&kp->fmt.sliced, &up->fmt.sliced,
+ sizeof(kp->fmt.sliced)) ? -EFAULT : 0;
default:
printk(KERN_INFO "compat_ioctl32: unexpected VIDIOC_FMT type %d\n",
kp->type);
@@ -225,20 +170,23 @@ static int __put_v4l2_format32(struct v4
switch (kp->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
- return put_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix);
+ return copy_to_user(&up->fmt.pix, &kp->fmt.pix,
+ sizeof(kp->fmt.pix)) ? -EFAULT : 0;
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
- return put_v4l2_pix_format_mplane(&kp->fmt.pix_mp,
- &up->fmt.pix_mp);
+ return copy_to_user(&up->fmt.pix_mp, &kp->fmt.pix_mp,
+ sizeof(kp->fmt.pix_mp)) ? -EFAULT : 0;
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
return put_v4l2_window32(&kp->fmt.win, &up->fmt.win);
case V4L2_BUF_TYPE_VBI_CAPTURE:
case V4L2_BUF_TYPE_VBI_OUTPUT:
- return put_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi);
+ return copy_to_user(&up->fmt.vbi, &kp->fmt.vbi,
+ sizeof(kp->fmt.vbi)) ? -EFAULT : 0;
case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
- return put_v4l2_sliced_vbi_format(&kp->fmt.sliced, &up->fmt.sliced);
+ return copy_to_user(&up->fmt.sliced, &kp->fmt.sliced,
+ sizeof(kp->fmt.sliced)) ? -EFAULT : 0;
default:
printk(KERN_INFO "compat_ioctl32: unexpected VIDIOC_FMT type %d\n",
kp->type);


Patches currently in stable-queue which might be from mchehab@xxxxxxxxxxxxxxxx are

queue-3.18/media-v4l2-compat-ioctl32.c-copy-m.userptr-in-put_v4l2_plane32.patch
queue-3.18/media-v4l2-compat-ioctl32.c-avoid-sizeof-type.patch
queue-3.18/media-v4l2-compat-ioctl32.c-drop-pr_info-for-unknown-buffer-type.patch
queue-3.18/media-v4l2-compat-ioctl32-use-compat_u64-for-video-standard.patch
queue-3.18/media-v4l2-compat-ioctl32.c-add-missing-vidioc_prepare_buf.patch
queue-3.18/vb2-v4l2_buf_flag_done-is-set-after-dqbuf.patch
queue-3.18/media-v4l2-compat-ioctl32.c-refactor-compat-ioctl32-logic.patch
queue-3.18/media-v4l2-ctrls-fix-sparse-warning.patch
queue-3.18/media-v4l2-compat-ioctl32.c-fix-ctrl_is_pointer.patch
queue-3.18/media-v4l2-compat-ioctl32.c-move-helper-functions-to-__get-put_v4l2_format32.patch
queue-3.18/media-media-v4l2-ctrls-volatiles-should-not-generate-ch_value.patch
queue-3.18/media-v4l2-compat-ioctl32.c-don-t-copy-back-the-result-for-certain-errors.patch
queue-3.18/media-v4l2-compat-ioctl32.c-make-ctrl_is_pointer-work-for-subdevs.patch
queue-3.18/media-v4l2-compat-ioctl32.c-fix-the-indentation.patch
queue-3.18/media-v4l2-compat-ioctl32-copy-v4l2_window-global_alpha.patch
queue-3.18/media-v4l2-ioctl.c-don-t-copy-back-the-result-for-enotty.patch
queue-3.18/media-v4l2-compat-ioctl32.c-copy-clip-list-in-put_v4l2_window32.patch
queue-3.18/media-v4l2-compat-ioctl32-initialize-a-reserved-field.patch