[PATCH 1/6] drm: prime: Honour O_RDWR during prime-handle-to-fd

2015-08-27 Thread Emil Velikov
Hi all, On 27 August 2015 at 00:29, Tiago Vignatti wrote: > From: Daniel Thompson > > 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

[PATCH 1/6] drm: prime: Honour O_RDWR during prime-handle-to-fd

2015-08-27 Thread Tiago Vignatti
On 08/27/2015 01:36 PM, Emil Velikov wrote: > Hi all, > > On 27 August 2015 at 00:29, Tiago Vignatti > wrote: >> From: Daniel Thompson >> >> Currently DRM_IOCTL_PRIME_HANDLE_TO_FD rejects all flags except >> (DRM|O)_CLOEXEC making it difficult (maybe impossible) for userspace >> to mmap() the re

[PATCH 1/6] drm: prime: Honour O_RDWR during prime-handle-to-fd

2015-08-26 Thread Tiago Vignatti
From: Daniel Thompson 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 a