| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20180220044425.169493-11-acourbot@chromium.org>
Date: Tue, 20 Feb 2018 13:44:14 +0900
From: Alexandre Courbot <acourbot@...omium.org>
To: Mauro Carvalho Chehab <mchehab@...nel.org>,
Hans Verkuil <hverkuil@...all.nl>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Pawel Osciak <posciak@...omium.org>,
Marek Szyprowski <m.szyprowski@...sung.com>,
Tomasz Figa <tfiga@...omium.org>,
Sakari Ailus <sakari.ailus@...ux.intel.com>
Cc: Gustavo Padovan <gustavo.padovan@...labora.com>,
linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
Hans Verkuil <hans.verkuil@...co.com>,
Alexandre Courbot <acourbot@...omium.org>
Subject: [RFCv4 10/21] videodev2.h: Add request_fd field to v4l2_buffer
From: Hans Verkuil <hans.verkuil@...co.com>
When queuing buffers allow for passing the request that should
be associated with this buffer.
Signed-off-by: Hans Verkuil <hans.verkuil@...co.com>
[acourbot@...omium.org: make request ID 32-bit]
Signed-off-by: Alexandre Courbot <acourbot@...omium.org>
---
drivers/media/common/videobuf2/videobuf2-v4l2.c | 2 +-
drivers/media/usb/cpia2/cpia2_v4l.c | 2 +-
drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 9 ++++++---
drivers/media/v4l2-core/v4l2-ioctl.c | 4 ++--
include/uapi/linux/videodev2.h | 3 ++-
5 files changed, 12 insertions(+), 8 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index 886a2d8d5c6c..6d4d184aa68e 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -203,7 +203,7 @@ static void __fill_v4l2_buffer(struct vb2_buffer *vb, void *pb)
b->timestamp = ns_to_timeval(vb->timestamp);
b->timecode = vbuf->timecode;
b->sequence = vbuf->sequence;
- b->reserved2 = 0;
+ b->request_fd = 0;
b->reserved = 0;
if (q->is_multiplanar) {
diff --git a/drivers/media/usb/cpia2/cpia2_v4l.c b/drivers/media/usb/cpia2/cpia2_v4l.c
index 99f106b13280..af42ce3ceb48 100644
--- a/drivers/media/usb/cpia2/cpia2_v4l.c
+++ b/drivers/media/usb/cpia2/cpia2_v4l.c
@@ -948,7 +948,7 @@ static int cpia2_dqbuf(struct file *file, void *fh, struct v4l2_buffer *buf)
buf->sequence = cam->buffers[buf->index].seq;
buf->m.offset = cam->buffers[buf->index].data - cam->frame_buffer;
buf->length = cam->frame_size;
- buf->reserved2 = 0;
+ buf->request_fd = 0;
buf->reserved = 0;
memset(&buf->timecode, 0, sizeof(buf->timecode));
diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
index 5198c9eeb348..32bf47489a2e 100644
--- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
@@ -386,7 +386,7 @@ struct v4l2_buffer32 {
__s32 fd;
} m;
__u32 length;
- __u32 reserved2;
+ __s32 request_fd;
__u32 reserved;
};
@@ -486,6 +486,7 @@ static int get_v4l2_buffer32(struct v4l2_buffer __user *kp,
{
u32 type;
u32 length;
+ s32 request_fd;
enum v4l2_memory memory;
struct v4l2_plane32 __user *uplane32;
struct v4l2_plane __user *uplane;
@@ -500,7 +501,9 @@ static int get_v4l2_buffer32(struct v4l2_buffer __user *kp,
get_user(memory, &up->memory) ||
put_user(memory, &kp->memory) ||
get_user(length, &up->length) ||
- put_user(length, &kp->length))
+ put_user(length, &kp->length) ||
+ get_user(request_fd, &up->request_fd) ||
+ put_user(request_fd, &kp->request_fd))
return -EFAULT;
if (V4L2_TYPE_IS_OUTPUT(type))
@@ -604,7 +607,7 @@ static int put_v4l2_buffer32(struct v4l2_buffer __user *kp,
assign_in_user(&up->timestamp.tv_usec, &kp->timestamp.tv_usec) ||
copy_in_user(&up->timecode, &kp->timecode, sizeof(kp->timecode)) ||
assign_in_user(&up->sequence, &kp->sequence) ||
- assign_in_user(&up->reserved2, &kp->reserved2) ||
+ assign_in_user(&up->request_fd, &kp->request_fd) ||
assign_in_user(&up->reserved, &kp->reserved) ||
get_user(length, &kp->length) ||
put_user(length, &up->length))
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 260288ca4f55..7bfeaf233d5a 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -437,13 +437,13 @@ static void v4l_print_buffer(const void *arg, bool write_only)
const struct v4l2_plane *plane;
int i;
- pr_cont("%02ld:%02d:%02d.%08ld index=%d, type=%s, flags=0x%08x, field=%s, sequence=%d, memory=%s",
+ pr_cont("%02ld:%02d:%02d.%08ld index=%d, type=%s, request_fd=%u, flags=0x%08x, field=%s, sequence=%d, memory=%s",
p->timestamp.tv_sec / 3600,
(int)(p->timestamp.tv_sec / 60) % 60,
(int)(p->timestamp.tv_sec % 60),
(long)p->timestamp.tv_usec,
p->index,
- prt_names(p->type, v4l2_type_names),
+ prt_names(p->type, v4l2_type_names), p->request_fd,
p->flags, prt_names(p->field, v4l2_field_names),
p->sequence, prt_names(p->memory, v4l2_memory_names));
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 982718965180..4fd46ae8fad5 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -909,6 +909,7 @@ struct v4l2_plane {
* @length: size in bytes of the buffer (NOT its payload) for single-plane
* buffers (when type != *_MPLANE); number of elements in the
* planes array for multi-plane buffers
+ * @request_fd: fd of the request that this buffer should use
*
* Contains data exchanged by application and driver using one of the Streaming
* I/O methods.
@@ -932,7 +933,7 @@ struct v4l2_buffer {
__s32 fd;
} m;
__u32 length;
- __u32 reserved2;
+ __s32 request_fd;
__u32 reserved;
};
--
2.16.1.291.g4437f3f132-goog
Powered by blists - more mailing lists