diff options
| author | Daniel Thompson <daniel.thompson@linaro.org> | 2015-12-22 19:36:44 -0200 |
|---|---|---|
| committer | Joonyoung Shim <jy0922.shim@samsung.com> | 2016-08-11 17:40:23 +0900 |
| commit | 3b284f04cfab8a53b06f887b95ed3d87db00beeb (patch) | |
| tree | 179634df3591ad23d19e135e67ad7090cd494da7 /include | |
| parent | e45ebcb09dc6a83e4d0f8bf993138ce49d80587c (diff) | |
| download | linux-exynos-3b284f04cfab8a53b06f887b95ed3d87db00beeb.tar.gz linux-exynos-3b284f04cfab8a53b06f887b95ed3d87db00beeb.tar.bz2 linux-exynos-3b284f04cfab8a53b06f887b95ed3d87db00beeb.zip | |
drm: prime: Honour O_RDWR during prime-handle-to-fd
Currently DRM_IOCTL_PRIME_HANDLE_TO_FD rejects all flags except
(DRM|O)_CLOEXEC making it difficult (maybe impossible) for userspace
to mmap() the resulting dma-buf even when this is supported by the
DRM driver.
It is trivial to relax the restriction and permit read/write access.
This is safe because the flags are seldom touched by drm; mostly they
are passed verbatim to dma_buf calls.
v3 (Tiago): removed unused flags variable from drm_prime_handle_to_fd_ioctl.
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Tiago Vignatti <tiago.vignatti@intel.com>
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1450820214-12509-2-git-send-email-tiago.vignatti@intel.com
[jy0922.shim: applied from mainline kernel]
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Change-Id: I7e605e4e4fb10816e143a478ca0dc2aa018486f3
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/drm/drm.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h index ff6ef62d084b..092fe3fa8ec0 100644 --- a/include/uapi/drm/drm.h +++ b/include/uapi/drm/drm.h @@ -668,6 +668,7 @@ struct drm_set_client_cap { __u64 value; }; +#define DRM_RDWR O_RDWR #define DRM_CLOEXEC O_CLOEXEC struct drm_prime_handle { __u32 handle; |