[Mesa-dev] [1/2] loader: add loader_open_name(..)
martin.fuzzey at flowbird.group
Fri Aug 10 12:25:10 UTC 2018
On 01/08/18 23:07, Christian Gmeiner wrote:
> Add an improved drmOpenWithType(..) clone which fixes some serious
> flaws. Some highlights:
> - using busid works only with PCI devices
> - open() w/o O_CLOEXEC
> - when build w/o udev - it creates a node: mkdir, chown(root), chmod, mknod
> - calls back into Xserver/DDX module
> - last but no least - borderline hacks with massive documentation 
> to keep this running.
> Signed-off-by: Christian Gmeiner <christian.gmeiner at gmail.com>
Why do this in mesa rather than fixing (or adding a new version if
necessary for backwards compatibility) to the libdrm code?
mesa is not the only place that we need to find the node path based on a
driver name to avoid hard coding or putting brittle paths in config files.
There is at least drm_hwcomposer as well for Android and probably others.
(drm_hwc currently uses a hard coded path overridable by a system property):
property_get("hwc.drm.device", path, "/dev/dri/card0");
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