* Re: [Intel-gfx] [PATCH 2/2] drm: Provide compat ioctl for addfb2.1
2015-07-14 10:13 ` [PATCH 2/2] drm: Provide compat ioctl for addfb2.1 Tvrtko Ursulin
@ 2015-07-14 10:26 ` Daniel Vetter
2015-07-15 9:17 ` [PATCH 2/2 v3] " Tvrtko Ursulin
1 sibling, 0 replies; 4+ messages in thread
From: Daniel Vetter @ 2015-07-14 10:26 UTC (permalink / raw)
To: Tvrtko Ursulin; +Cc: Intel-gfx, Daniel Stone, stable, dri-devel, Daniel Vetter
On Tue, Jul 14, 2015 at 11:13:08AM +0100, Tvrtko Ursulin wrote:
> From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
>
> Frame buffer modifiers extensions provided in;
>
> commit e3eb3250d84ef97b766312345774367b6a310db8
> Author: Rob Clark <robdclark@gmail.com>
> Date: Thu Feb 5 14:41:52 2015 +0000
>
> drm: add support for tiled/compressed/etc modifier in addfb2
>
> Missed the structure packing/alignment problem where 64-bit
> members were added after the odd number of 32-bit ones. This
> makes the compiler produce structures of different sizes under
> 32- and 64-bit x86 targets and makes the ioctl need explicit
> compat handling.
>
> v2: Removed the typedef. (Daniel Vetter)
>
> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
> Cc: dri-devel@lists.freedesktop.org
> Cc: Rob Clark <robdclark@gmail.com>
> Cc: Daniel Stone <daniels@collabora.com>
> Cc: Daniel Vetter <daniel.vetter@intel.com>
> Cc: stable@vger.kernel.org
Applied to topic/drm-fixes. I pulled in the i915 one (with cc:stable
added) already.
Thanks, Daniel
> ---
> drivers/gpu/drm/drm_ioc32.c | 60 +++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 60 insertions(+)
>
> diff --git a/drivers/gpu/drm/drm_ioc32.c b/drivers/gpu/drm/drm_ioc32.c
> index 8dcfa76b09e6..40d18d6173d9 100644
> --- a/drivers/gpu/drm/drm_ioc32.c
> +++ b/drivers/gpu/drm/drm_ioc32.c
> @@ -70,6 +70,8 @@
>
> #define DRM_IOCTL_WAIT_VBLANK32 DRM_IOWR(0x3a, drm_wait_vblank32_t)
>
> +#define DRM_IOCTL_MODE_ADDFB232 DRM_IOWR(0xb8, drm_mode_fb_cmd232_t)
> +
> typedef struct drm_version_32 {
> int version_major; /**< Major version */
> int version_minor; /**< Minor version */
> @@ -1013,6 +1015,63 @@ static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
> return 0;
> }
>
> +struct drm_mode_fb_cmd232 {
> + u32 fb_id;
> + u32 width;
> + u32 height;
> + u32 pixel_format;
> + u32 flags;
> + u32 handles[4];
> + u32 pitches[4];
> + u32 offsets[4];
> + u64 modifier[4];
> +} __attribute__((packed));
> +
> +static int compat_drm_mode_addfb2(struct file *file, unsigned int cmd,
> + unsigned long arg)
> +{
> + struct drm_mode_fb_cmd232 __user *argp = (void __user *)arg;
> + struct drm_mode_fb_cmd232 req32;
> + struct drm_mode_fb_cmd2 __user *req64;
> + int i;
> + int err;
> +
> + if (copy_from_user(&req32, argp, sizeof(req32)))
> + return -EFAULT;
> +
> + req64 = compat_alloc_user_space(sizeof(*req64));
> +
> + if (!access_ok(VERIFY_WRITE, req64, sizeof(*req64))
> + || __put_user(req32.width, &req64->width)
> + || __put_user(req32.height, &req64->height)
> + || __put_user(req32.pixel_format, &req64->pixel_format)
> + || __put_user(req32.flags, &req64->flags))
> + return -EFAULT;
> +
> + for (i = 0; i < 4; i++) {
> + if (__put_user(req32.handles[i], &req64->handles[i]))
> + return -EFAULT;
> + if (__put_user(req32.pitches[i], &req64->pitches[i]))
> + return -EFAULT;
> + if (__put_user(req32.offsets[i], &req64->offsets[i]))
> + return -EFAULT;
> + if (__put_user(req32.modifier[i], &req64->modifier[i]))
> + return -EFAULT;
> + }
> +
> + err = drm_ioctl(file, DRM_IOCTL_MODE_ADDFB2, (unsigned long)req64);
> + if (err)
> + return err;
> +
> + if (__get_user(req32.fb_id, &req64->fb_id))
> + return -EFAULT;
> +
> + if (copy_to_user(argp, &req32, sizeof(req32)))
> + return -EFAULT;
> +
> + return 0;
> +}
> +
> static drm_ioctl_compat_t *drm_compat_ioctls[] = {
> [DRM_IOCTL_NR(DRM_IOCTL_VERSION32)] = compat_drm_version,
> [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE32)] = compat_drm_getunique,
> @@ -1045,6 +1104,7 @@ static drm_ioctl_compat_t *drm_compat_ioctls[] = {
> [DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW32)] = compat_drm_update_draw,
> #endif
> [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)] = compat_drm_wait_vblank,
> + [DRM_IOCTL_NR(DRM_IOCTL_MODE_ADDFB232)] = compat_drm_mode_addfb2,
> };
>
> /**
> --
> 2.4.2
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
^ permalink raw reply [flat|nested] 4+ messages in thread* [PATCH 2/2 v3] drm: Provide compat ioctl for addfb2.1
2015-07-14 10:13 ` [PATCH 2/2] drm: Provide compat ioctl for addfb2.1 Tvrtko Ursulin
2015-07-14 10:26 ` [Intel-gfx] " Daniel Vetter
@ 2015-07-15 9:17 ` Tvrtko Ursulin
1 sibling, 0 replies; 4+ messages in thread
From: Tvrtko Ursulin @ 2015-07-15 9:17 UTC (permalink / raw)
To: Intel-gfx
Cc: Tvrtko Ursulin, dri-devel, Rob Clark, Daniel Stone, Daniel Vetter,
stable
From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Frame buffer modifiers extensions provided in;
commit e3eb3250d84ef97b766312345774367b6a310db8
Author: Rob Clark <robdclark@gmail.com>
Date: Thu Feb 5 14:41:52 2015 +0000
drm: add support for tiled/compressed/etc modifier in addfb2
Missed the structure packing/alignment problem where 64-bit
members were added after the odd number of 32-bit ones. This
makes the compiler produce structures of different sizes under
32- and 64-bit x86 targets and makes the ioctl need explicit
compat handling.
v2: Removed the typedef. (Daniel Vetter)
v3: Failed to git add all changes when sending v2. (0day)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Cc: dri-devel@lists.freedesktop.org
Cc: Rob Clark <robdclark@gmail.com>
Cc: Daniel Stone <daniels@collabora.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: stable@vger.kernel.org
---
drivers/gpu/drm/drm_ioc32.c | 60 +++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 60 insertions(+)
diff --git a/drivers/gpu/drm/drm_ioc32.c b/drivers/gpu/drm/drm_ioc32.c
index 8dcfa76b09e6..7fdec8d1e059 100644
--- a/drivers/gpu/drm/drm_ioc32.c
+++ b/drivers/gpu/drm/drm_ioc32.c
@@ -70,6 +70,8 @@
#define DRM_IOCTL_WAIT_VBLANK32 DRM_IOWR(0x3a, drm_wait_vblank32_t)
+#define DRM_IOCTL_MODE_ADDFB232 DRM_IOWR(0xb8, struct drm_mode_fb_cmd232)
+
typedef struct drm_version_32 {
int version_major; /**< Major version */
int version_minor; /**< Minor version */
@@ -1013,6 +1015,63 @@ static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
return 0;
}
+struct drm_mode_fb_cmd232 {
+ u32 fb_id;
+ u32 width;
+ u32 height;
+ u32 pixel_format;
+ u32 flags;
+ u32 handles[4];
+ u32 pitches[4];
+ u32 offsets[4];
+ u64 modifier[4];
+} __attribute__((packed));
+
+static int compat_drm_mode_addfb2(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ struct drm_mode_fb_cmd232 __user *argp = (void __user *)arg;
+ struct drm_mode_fb_cmd232 req32;
+ struct drm_mode_fb_cmd2 __user *req64;
+ int i;
+ int err;
+
+ if (copy_from_user(&req32, argp, sizeof(req32)))
+ return -EFAULT;
+
+ req64 = compat_alloc_user_space(sizeof(*req64));
+
+ if (!access_ok(VERIFY_WRITE, req64, sizeof(*req64))
+ || __put_user(req32.width, &req64->width)
+ || __put_user(req32.height, &req64->height)
+ || __put_user(req32.pixel_format, &req64->pixel_format)
+ || __put_user(req32.flags, &req64->flags))
+ return -EFAULT;
+
+ for (i = 0; i < 4; i++) {
+ if (__put_user(req32.handles[i], &req64->handles[i]))
+ return -EFAULT;
+ if (__put_user(req32.pitches[i], &req64->pitches[i]))
+ return -EFAULT;
+ if (__put_user(req32.offsets[i], &req64->offsets[i]))
+ return -EFAULT;
+ if (__put_user(req32.modifier[i], &req64->modifier[i]))
+ return -EFAULT;
+ }
+
+ err = drm_ioctl(file, DRM_IOCTL_MODE_ADDFB2, (unsigned long)req64);
+ if (err)
+ return err;
+
+ if (__get_user(req32.fb_id, &req64->fb_id))
+ return -EFAULT;
+
+ if (copy_to_user(argp, &req32, sizeof(req32)))
+ return -EFAULT;
+
+ return 0;
+}
+
static drm_ioctl_compat_t *drm_compat_ioctls[] = {
[DRM_IOCTL_NR(DRM_IOCTL_VERSION32)] = compat_drm_version,
[DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE32)] = compat_drm_getunique,
@@ -1045,6 +1104,7 @@ static drm_ioctl_compat_t *drm_compat_ioctls[] = {
[DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW32)] = compat_drm_update_draw,
#endif
[DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)] = compat_drm_wait_vblank,
+ [DRM_IOCTL_NR(DRM_IOCTL_MODE_ADDFB232)] = compat_drm_mode_addfb2,
};
/**
--
2.4.2
^ permalink raw reply related [flat|nested] 4+ messages in thread