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[media] videobuf2: Add support for file access mode flags for DMABUF exporting

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Currently it is not possible for userspace to map a DMABUF exported buffer
with write permissions. This patch allows to also pass O_RDONLY/O_RDWR when
exporting the buffer, so that userspace may map it with write permissions.

Signed-off-by: Philipp Zabel <[email protected]>
Signed-off-by: Sylwester Nawrocki <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
This commit is contained in:
Philipp Zabel 2013-05-21 05:11:35 -03:00 • committed by Mauro Carvalho Chehab
commit c1b96a236e
4 changed files with 12 additions and 10 deletions
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2
include/media/videobuf2-core.h
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@ -83,7 +83,7 @@ struct vb2_fileio_data;
struct vb2_mem_ops {
void *(*alloc)(void *alloc_ctx, unsigned long size, gfp_t gfp_flags);
void (*put)(void *buf_priv);
struct dma_buf *(*get_dmabuf)(void *buf_priv);
struct dma_buf *(*get_dmabuf)(void *buf_priv, unsigned long flags);
void *(*get_userptr)(void *alloc_ctx, unsigned long vaddr,
unsigned long size, int write);