[PATCH v6 01/17] media: v4l2-ioctl: check_ext_ctrls: Fix multiclass V4L2_CTRL_WHICH_DEF_VAL
Drivers that do not use the ctrl-framework use this function instead.
- Do not check for multiple classes when getting the DEF_VAL.
Fixes v4l2-compliance: Control ioctls (Input 0): fail: v4l2-test-controls.cpp(813): doioctl(node, VIDIOC_G_EXT_CTRLS, &ctrls) test VIDIOC_G/S/TRY_EXT_CTRLS: FAIL
Cc: stable@vger.kernel.org Fixes: 6fa6f831f095 ("media: v4l2-ctrls: add core request support") Suggested-by: Hans Verkuil hverkuil-cisco@xs4all.nl Signed-off-by: Ricardo Ribalda ribalda@chromium.org Reviewed-by: Laurent Pinchart laurent.pinchart@ideasonboard.com --- drivers/media/v4l2-core/v4l2-ioctl.c | 47 ++++++++++++++++------------ 1 file changed, 27 insertions(+), 20 deletions(-)
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 31d1342e61e8..403f957a1012 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -908,7 +908,7 @@ static void v4l_print_default(const void *arg, bool write_only) pr_cont("driver-specific ioctl\n"); }
-static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) +static bool check_ext_ctrls(struct v4l2_ext_controls *c, unsigned long ioctl) { __u32 i;
@@ -917,23 +917,30 @@ static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) for (i = 0; i < c->count; i++) c->controls[i].reserved2[0] = 0;
- /* V4L2_CID_PRIVATE_BASE cannot be used as control class - when using extended controls. - Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL - is it allowed for backwards compatibility. - */ - if (!allow_priv && c->which == V4L2_CID_PRIVATE_BASE) - return 0; - if (!c->which) - return 1; + switch (c->which) { + case V4L2_CID_PRIVATE_BASE: + /* + * V4L2_CID_PRIVATE_BASE cannot be used as control class + * when using extended controls. + * Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL + * is it allowed for backwards compatibility. + */ + if (ioctl == VIDIOC_G_CTRL || ioctl == VIDIOC_S_CROP) + return false; + break; + case V4L2_CTRL_WHICH_DEF_VAL: + case V4L2_CTRL_WHICH_CUR_VAL: + return true; + } + /* Check that all controls are from the same control class. */ for (i = 0; i < c->count; i++) { if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) { c->error_idx = i; - return 0; + return false; } } - return 1; + return true; }
static int check_fmt(struct file *file, enum v4l2_buf_type type) @@ -2229,7 +2236,7 @@ static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops, ctrls.controls = &ctrl; ctrl.id = p->id; ctrl.value = p->value; - if (check_ext_ctrls(&ctrls, 1)) { + if (check_ext_ctrls(&ctrls, VIDIOC_G_CTRL)) { int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
if (ret == 0) @@ -2263,7 +2270,7 @@ static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops, ctrls.controls = &ctrl; ctrl.id = p->id; ctrl.value = p->value; - if (check_ext_ctrls(&ctrls, 1)) + if (check_ext_ctrls(&ctrls, VIDIOC_S_CTRL)) return ops->vidioc_s_ext_ctrls(file, fh, &ctrls); return -EINVAL; } @@ -2285,8 +2292,8 @@ static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops, vfd, vfd->v4l2_dev->mdev, p); if (ops->vidioc_g_ext_ctrls == NULL) return -ENOTTY; - return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) : - -EINVAL; + return check_ext_ctrls(p, VIDIOC_G_EXT_CTRLS) ? + ops->vidioc_g_ext_ctrls(file, fh, p) : -EINVAL; }
static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, @@ -2306,8 +2313,8 @@ static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, vfd, vfd->v4l2_dev->mdev, p); if (ops->vidioc_s_ext_ctrls == NULL) return -ENOTTY; - return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) : - -EINVAL; + return check_ext_ctrls(p, VIDIOC_S_EXT_CTRLS) ? + ops->vidioc_s_ext_ctrls(file, fh, p) : -EINVAL; }
static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, @@ -2327,8 +2334,8 @@ static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, vfd, vfd->v4l2_dev->mdev, p); if (ops->vidioc_try_ext_ctrls == NULL) return -ENOTTY; - return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) : - -EINVAL; + return check_ext_ctrls(p, VIDIOC_TRY_EXT_CTRLS) ? + ops->vidioc_try_ext_ctrls(file, fh, p) : -EINVAL; }
/*
Hi Ricardo,
On 17/03/2021 17:44, Ricardo Ribalda wrote:
Drivers that do not use the ctrl-framework use this function instead.
- Do not check for multiple classes when getting the DEF_VAL.
Fixes v4l2-compliance: Control ioctls (Input 0): fail: v4l2-test-controls.cpp(813): doioctl(node, VIDIOC_G_EXT_CTRLS, &ctrls) test VIDIOC_G/S/TRY_EXT_CTRLS: FAIL
Can you merge patches 1-4 into a single patch? It's really one big fix since this code was never updated when new 'which' values were added. So keeping it together is, for once, actually preferred.
You can add my:
Reviewed-by: Hans Verkuil hverkuil-cisco@xs4all.nl
after these 4 patches are merged. It looks much nicer now.
Regards,
Hans
Cc: stable@vger.kernel.org Fixes: 6fa6f831f095 ("media: v4l2-ctrls: add core request support") Suggested-by: Hans Verkuil hverkuil-cisco@xs4all.nl Signed-off-by: Ricardo Ribalda ribalda@chromium.org Reviewed-by: Laurent Pinchart laurent.pinchart@ideasonboard.com
drivers/media/v4l2-core/v4l2-ioctl.c | 47 ++++++++++++++++------------ 1 file changed, 27 insertions(+), 20 deletions(-)
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 31d1342e61e8..403f957a1012 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -908,7 +908,7 @@ static void v4l_print_default(const void *arg, bool write_only) pr_cont("driver-specific ioctl\n"); } -static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) +static bool check_ext_ctrls(struct v4l2_ext_controls *c, unsigned long ioctl) { __u32 i; @@ -917,23 +917,30 @@ static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) for (i = 0; i < c->count; i++) c->controls[i].reserved2[0] = 0;
- /* V4L2_CID_PRIVATE_BASE cannot be used as control class
when using extended controls.Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRLis it allowed for backwards compatibility.*/- if (!allow_priv && c->which == V4L2_CID_PRIVATE_BASE)
return 0;- if (!c->which)
return 1;
- switch (c->which) {
- case V4L2_CID_PRIVATE_BASE:
/** V4L2_CID_PRIVATE_BASE cannot be used as control class* when using extended controls.* Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL* is it allowed for backwards compatibility.*/if (ioctl == VIDIOC_G_CTRL || ioctl == VIDIOC_S_CROP)return false;break;- case V4L2_CTRL_WHICH_DEF_VAL:
- case V4L2_CTRL_WHICH_CUR_VAL:
return true;- }
- /* Check that all controls are from the same control class. */ for (i = 0; i < c->count; i++) { if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) { c->error_idx = i;
return 0;
return false;
- return 1;
- return true;
} static int check_fmt(struct file *file, enum v4l2_buf_type type) @@ -2229,7 +2236,7 @@ static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops, ctrls.controls = &ctrl; ctrl.id = p->id; ctrl.value = p->value;
- if (check_ext_ctrls(&ctrls, 1)) {
- if (check_ext_ctrls(&ctrls, VIDIOC_G_CTRL)) { int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
if (ret == 0) @@ -2263,7 +2270,7 @@ static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops, ctrls.controls = &ctrl; ctrl.id = p->id; ctrl.value = p->value;
- if (check_ext_ctrls(&ctrls, 1))
- if (check_ext_ctrls(&ctrls, VIDIOC_S_CTRL)) return ops->vidioc_s_ext_ctrls(file, fh, &ctrls); return -EINVAL;
} @@ -2285,8 +2292,8 @@ static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops, vfd, vfd->v4l2_dev->mdev, p); if (ops->vidioc_g_ext_ctrls == NULL) return -ENOTTY;
- return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) :
-EINVAL;
- return check_ext_ctrls(p, VIDIOC_G_EXT_CTRLS) ?
ops->vidioc_g_ext_ctrls(file, fh, p) : -EINVAL;} static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, @@ -2306,8 +2313,8 @@ static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, vfd, vfd->v4l2_dev->mdev, p); if (ops->vidioc_s_ext_ctrls == NULL) return -ENOTTY;
- return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) :
-EINVAL;
- return check_ext_ctrls(p, VIDIOC_S_EXT_CTRLS) ?
ops->vidioc_s_ext_ctrls(file, fh, p) : -EINVAL;} static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, @@ -2327,8 +2334,8 @@ static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, vfd, vfd->v4l2_dev->mdev, p); if (ops->vidioc_try_ext_ctrls == NULL) return -ENOTTY;
- return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) :
-EINVAL;
- return check_ext_ctrls(p, VIDIOC_TRY_EXT_CTRLS) ?
ops->vidioc_try_ext_ctrls(file, fh, p) : -EINVAL;} /*
Hi Hans
Can I merge 1-3, but leave 4 as a separate one? It helps to tell a story for 5 and 6.
Thanks
On Thu, Mar 18, 2021 at 8:14 AM Hans Verkuil hverkuil-cisco@xs4all.nl wrote:
Hi Ricardo,
On 17/03/2021 17:44, Ricardo Ribalda wrote:
Drivers that do not use the ctrl-framework use this function instead.
- Do not check for multiple classes when getting the DEF_VAL.
Fixes v4l2-compliance: Control ioctls (Input 0): fail: v4l2-test-controls.cpp(813): doioctl(node, VIDIOC_G_EXT_CTRLS, &ctrls) test VIDIOC_G/S/TRY_EXT_CTRLS: FAIL
Can you merge patches 1-4 into a single patch? It's really one big fix since this code was never updated when new 'which' values were added. So keeping it together is, for once, actually preferred.
You can add my:
Reviewed-by: Hans Verkuil hverkuil-cisco@xs4all.nl
after these 4 patches are merged. It looks much nicer now.
Regards,
HansCc: stable@vger.kernel.org Fixes: 6fa6f831f095 ("media: v4l2-ctrls: add core request support") Suggested-by: Hans Verkuil hverkuil-cisco@xs4all.nl Signed-off-by: Ricardo Ribalda ribalda@chromium.org Reviewed-by: Laurent Pinchart laurent.pinchart@ideasonboard.com
drivers/media/v4l2-core/v4l2-ioctl.c | 47 ++++++++++++++++------------ 1 file changed, 27 insertions(+), 20 deletions(-)
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 31d1342e61e8..403f957a1012 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -908,7 +908,7 @@ static void v4l_print_default(const void *arg, bool write_only) pr_cont("driver-specific ioctl\n"); }
-static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) +static bool check_ext_ctrls(struct v4l2_ext_controls *c, unsigned long ioctl) { __u32 i;
@@ -917,23 +917,30 @@ static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) for (i = 0; i < c->count; i++) c->controls[i].reserved2[0] = 0;
/* V4L2_CID_PRIVATE_BASE cannot be used as control classwhen using extended controls.Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRLis it allowed for backwards compatibility.*/if (!allow_priv && c->which == V4L2_CID_PRIVATE_BASE)return 0;if (!c->which)return 1;
switch (c->which) {case V4L2_CID_PRIVATE_BASE:/** V4L2_CID_PRIVATE_BASE cannot be used as control class* when using extended controls.* Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL* is it allowed for backwards compatibility.*/if (ioctl == VIDIOC_G_CTRL || ioctl == VIDIOC_S_CROP)return false;break;case V4L2_CTRL_WHICH_DEF_VAL:case V4L2_CTRL_WHICH_CUR_VAL:return true;}/* Check that all controls are from the same control class. */ for (i = 0; i < c->count; i++) { if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) { c->error_idx = i;
return 0;
return false; } }
return 1;
return true;}
static int check_fmt(struct file *file, enum v4l2_buf_type type) @@ -2229,7 +2236,7 @@ static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops, ctrls.controls = &ctrl; ctrl.id = p->id; ctrl.value = p->value;
if (check_ext_ctrls(&ctrls, 1)) {
if (check_ext_ctrls(&ctrls, VIDIOC_G_CTRL)) { int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls); if (ret == 0)@@ -2263,7 +2270,7 @@ static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops, ctrls.controls = &ctrl; ctrl.id = p->id; ctrl.value = p->value;
if (check_ext_ctrls(&ctrls, 1))
if (check_ext_ctrls(&ctrls, VIDIOC_S_CTRL)) return ops->vidioc_s_ext_ctrls(file, fh, &ctrls); return -EINVAL;} @@ -2285,8 +2292,8 @@ static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops, vfd, vfd->v4l2_dev->mdev, p); if (ops->vidioc_g_ext_ctrls == NULL) return -ENOTTY;
return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) :-EINVAL;
return check_ext_ctrls(p, VIDIOC_G_EXT_CTRLS) ?ops->vidioc_g_ext_ctrls(file, fh, p) : -EINVAL;}
static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, @@ -2306,8 +2313,8 @@ static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, vfd, vfd->v4l2_dev->mdev, p); if (ops->vidioc_s_ext_ctrls == NULL) return -ENOTTY;
return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) :-EINVAL;
return check_ext_ctrls(p, VIDIOC_S_EXT_CTRLS) ?ops->vidioc_s_ext_ctrls(file, fh, p) : -EINVAL;}
static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, @@ -2327,8 +2334,8 @@ static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, vfd, vfd->v4l2_dev->mdev, p); if (ops->vidioc_try_ext_ctrls == NULL) return -ENOTTY;
return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) :-EINVAL;
return check_ext_ctrls(p, VIDIOC_TRY_EXT_CTRLS) ?ops->vidioc_try_ext_ctrls(file, fh, p) : -EINVAL;}
/*
On 18/03/2021 08:17, Ricardo Ribalda wrote:
Hi Hans
Can I merge 1-3, but leave 4 as a separate one? It helps to tell a story for 5 and 6.
I really prefer it as a single patch. All four patches are basically a single big fix for v4l2-ioctl.c where the code for drivers that do not use the control framework had become very outdated. Fixing it in a single patch helps backporting to stable, and it is easier to review and see everything that had to be done to fix this.
In this case I wondered when I was reviewing patch 1 why V4L2_CTRL_WHICH_DEF_VAL was just accepted without checking for S/TRY_EXT_CTRLS. Basically patch 1 is a broken fix w.r.t. DEF_VAL until patch 4, which really fixes it.
Just do it all in a single patch, splitting it up doesn't work in this particular case.
Regards,
Hans
Thanks
On Thu, Mar 18, 2021 at 8:14 AM Hans Verkuil hverkuil-cisco@xs4all.nl wrote:
Hi Ricardo,
On 17/03/2021 17:44, Ricardo Ribalda wrote:
Drivers that do not use the ctrl-framework use this function instead.
- Do not check for multiple classes when getting the DEF_VAL.
Fixes v4l2-compliance: Control ioctls (Input 0): fail: v4l2-test-controls.cpp(813): doioctl(node, VIDIOC_G_EXT_CTRLS, &ctrls) test VIDIOC_G/S/TRY_EXT_CTRLS: FAIL
Can you merge patches 1-4 into a single patch? It's really one big fix since this code was never updated when new 'which' values were added. So keeping it together is, for once, actually preferred.
You can add my:
Reviewed-by: Hans Verkuil hverkuil-cisco@xs4all.nl
after these 4 patches are merged. It looks much nicer now.
Regards,
HansCc: stable@vger.kernel.org Fixes: 6fa6f831f095 ("media: v4l2-ctrls: add core request support") Suggested-by: Hans Verkuil hverkuil-cisco@xs4all.nl Signed-off-by: Ricardo Ribalda ribalda@chromium.org Reviewed-by: Laurent Pinchart laurent.pinchart@ideasonboard.com
drivers/media/v4l2-core/v4l2-ioctl.c | 47 ++++++++++++++++------------ 1 file changed, 27 insertions(+), 20 deletions(-)
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 31d1342e61e8..403f957a1012 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -908,7 +908,7 @@ static void v4l_print_default(const void *arg, bool write_only) pr_cont("driver-specific ioctl\n"); }
-static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) +static bool check_ext_ctrls(struct v4l2_ext_controls *c, unsigned long ioctl) { __u32 i;
@@ -917,23 +917,30 @@ static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) for (i = 0; i < c->count; i++) c->controls[i].reserved2[0] = 0;
/* V4L2_CID_PRIVATE_BASE cannot be used as control classwhen using extended controls.Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRLis it allowed for backwards compatibility.*/if (!allow_priv && c->which == V4L2_CID_PRIVATE_BASE)return 0;if (!c->which)return 1;
switch (c->which) {case V4L2_CID_PRIVATE_BASE:/** V4L2_CID_PRIVATE_BASE cannot be used as control class* when using extended controls.* Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL* is it allowed for backwards compatibility.*/if (ioctl == VIDIOC_G_CTRL || ioctl == VIDIOC_S_CROP)return false;break;case V4L2_CTRL_WHICH_DEF_VAL:case V4L2_CTRL_WHICH_CUR_VAL:return true;}/* Check that all controls are from the same control class. */ for (i = 0; i < c->count; i++) { if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) { c->error_idx = i;
return 0;
return false; } }
return 1;
return true;}
static int check_fmt(struct file *file, enum v4l2_buf_type type) @@ -2229,7 +2236,7 @@ static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops, ctrls.controls = &ctrl; ctrl.id = p->id; ctrl.value = p->value;
if (check_ext_ctrls(&ctrls, 1)) {
if (check_ext_ctrls(&ctrls, VIDIOC_G_CTRL)) { int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls); if (ret == 0)@@ -2263,7 +2270,7 @@ static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops, ctrls.controls = &ctrl; ctrl.id = p->id; ctrl.value = p->value;
if (check_ext_ctrls(&ctrls, 1))
if (check_ext_ctrls(&ctrls, VIDIOC_S_CTRL)) return ops->vidioc_s_ext_ctrls(file, fh, &ctrls); return -EINVAL;} @@ -2285,8 +2292,8 @@ static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops, vfd, vfd->v4l2_dev->mdev, p); if (ops->vidioc_g_ext_ctrls == NULL) return -ENOTTY;
return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) :-EINVAL;
return check_ext_ctrls(p, VIDIOC_G_EXT_CTRLS) ?ops->vidioc_g_ext_ctrls(file, fh, p) : -EINVAL;}
static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, @@ -2306,8 +2313,8 @@ static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, vfd, vfd->v4l2_dev->mdev, p); if (ops->vidioc_s_ext_ctrls == NULL) return -ENOTTY;
return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) :-EINVAL;
return check_ext_ctrls(p, VIDIOC_S_EXT_CTRLS) ?ops->vidioc_s_ext_ctrls(file, fh, p) : -EINVAL;}
static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, @@ -2327,8 +2334,8 @@ static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, vfd, vfd->v4l2_dev->mdev, p); if (ops->vidioc_try_ext_ctrls == NULL) return -ENOTTY;
return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) :-EINVAL;
return check_ext_ctrls(p, VIDIOC_TRY_EXT_CTRLS) ?ops->vidioc_try_ext_ctrls(file, fh, p) : -EINVAL;}
/*
Hi Hans
On Thu, Mar 18, 2021 at 8:48 AM Hans Verkuil hverkuil-cisco@xs4all.nl wrote:
On 18/03/2021 08:17, Ricardo Ribalda wrote:
Hi Hans
Can I merge 1-3, but leave 4 as a separate one? It helps to tell a story for 5 and 6.
I really prefer it as a single patch. All four patches are basically a single big fix for v4l2-ioctl.c where the code for drivers that do not use the control framework had become very outdated. Fixing it in a single patch helps backporting to stable, and it is easier to review and see everything that had to be done to fix this.
In this case I wondered when I was reviewing patch 1 why V4L2_CTRL_WHICH_DEF_VAL was just accepted without checking for S/TRY_EXT_CTRLS. Basically patch 1 is a broken fix w.r.t. DEF_VAL until patch 4, which really fixes it.
Just do it all in a single patch, splitting it up doesn't work in this particular case.
Ok, thanks for the clarification :)
Regards,
HansThanks
On Thu, Mar 18, 2021 at 8:14 AM Hans Verkuil hverkuil-cisco@xs4all.nl wrote:
Hi Ricardo,
On 17/03/2021 17:44, Ricardo Ribalda wrote:
Drivers that do not use the ctrl-framework use this function instead.
- Do not check for multiple classes when getting the DEF_VAL.
Fixes v4l2-compliance: Control ioctls (Input 0): fail: v4l2-test-controls.cpp(813): doioctl(node, VIDIOC_G_EXT_CTRLS, &ctrls) test VIDIOC_G/S/TRY_EXT_CTRLS: FAIL
Can you merge patches 1-4 into a single patch? It's really one big fix since this code was never updated when new 'which' values were added. So keeping it together is, for once, actually preferred.
You can add my:
Reviewed-by: Hans Verkuil hverkuil-cisco@xs4all.nl
after these 4 patches are merged. It looks much nicer now.
Regards,
HansCc: stable@vger.kernel.org Fixes: 6fa6f831f095 ("media: v4l2-ctrls: add core request support") Suggested-by: Hans Verkuil hverkuil-cisco@xs4all.nl Signed-off-by: Ricardo Ribalda ribalda@chromium.org Reviewed-by: Laurent Pinchart laurent.pinchart@ideasonboard.com
drivers/media/v4l2-core/v4l2-ioctl.c | 47 ++++++++++++++++------------ 1 file changed, 27 insertions(+), 20 deletions(-)
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 31d1342e61e8..403f957a1012 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -908,7 +908,7 @@ static void v4l_print_default(const void *arg, bool write_only) pr_cont("driver-specific ioctl\n"); }
-static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) +static bool check_ext_ctrls(struct v4l2_ext_controls *c, unsigned long ioctl) { __u32 i;
@@ -917,23 +917,30 @@ static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) for (i = 0; i < c->count; i++) c->controls[i].reserved2[0] = 0;
/* V4L2_CID_PRIVATE_BASE cannot be used as control classwhen using extended controls.Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRLis it allowed for backwards compatibility.*/if (!allow_priv && c->which == V4L2_CID_PRIVATE_BASE)return 0;if (!c->which)return 1;
switch (c->which) {case V4L2_CID_PRIVATE_BASE:/** V4L2_CID_PRIVATE_BASE cannot be used as control class* when using extended controls.* Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL* is it allowed for backwards compatibility.*/if (ioctl == VIDIOC_G_CTRL || ioctl == VIDIOC_S_CROP)return false;break;case V4L2_CTRL_WHICH_DEF_VAL:case V4L2_CTRL_WHICH_CUR_VAL:return true;}/* Check that all controls are from the same control class. */ for (i = 0; i < c->count; i++) { if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) { c->error_idx = i;
return 0;
return false; } }
return 1;
return true;}
static int check_fmt(struct file *file, enum v4l2_buf_type type) @@ -2229,7 +2236,7 @@ static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops, ctrls.controls = &ctrl; ctrl.id = p->id; ctrl.value = p->value;
if (check_ext_ctrls(&ctrls, 1)) {
if (check_ext_ctrls(&ctrls, VIDIOC_G_CTRL)) { int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls); if (ret == 0)@@ -2263,7 +2270,7 @@ static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops, ctrls.controls = &ctrl; ctrl.id = p->id; ctrl.value = p->value;
if (check_ext_ctrls(&ctrls, 1))
if (check_ext_ctrls(&ctrls, VIDIOC_S_CTRL)) return ops->vidioc_s_ext_ctrls(file, fh, &ctrls); return -EINVAL;} @@ -2285,8 +2292,8 @@ static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops, vfd, vfd->v4l2_dev->mdev, p); if (ops->vidioc_g_ext_ctrls == NULL) return -ENOTTY;
return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) :-EINVAL;
return check_ext_ctrls(p, VIDIOC_G_EXT_CTRLS) ?ops->vidioc_g_ext_ctrls(file, fh, p) : -EINVAL;}
static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, @@ -2306,8 +2313,8 @@ static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, vfd, vfd->v4l2_dev->mdev, p); if (ops->vidioc_s_ext_ctrls == NULL) return -ENOTTY;
return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) :-EINVAL;
return check_ext_ctrls(p, VIDIOC_S_EXT_CTRLS) ?ops->vidioc_s_ext_ctrls(file, fh, p) : -EINVAL;}
static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, @@ -2327,8 +2334,8 @@ static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, vfd, vfd->v4l2_dev->mdev, p); if (ops->vidioc_try_ext_ctrls == NULL) return -ENOTTY;
return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) :-EINVAL;
return check_ext_ctrls(p, VIDIOC_TRY_EXT_CTRLS) ?ops->vidioc_try_ext_ctrls(file, fh, p) : -EINVAL;}
/*
linux-stable-mirror@lists.linaro.org
-
Hans Verkuil -
Ricardo Ribalda