[lfs-book] [LFS Trac] #4179: systemd (udev) wants group 'render'

LFS Trac trac at linuxfromscratch.org
Wed Dec 20 11:15:59 PST 2017


#4179: systemd (udev) wants group 'render'
----------------------+------------------------
 Reporter:  bdubbs@…  |      Owner:  lfs-book@…
     Type:  task      |     Status:  new
 Priority:  low       |  Milestone:  8.2
Component:  Book      |    Version:  SVN
 Severity:  minor     |   Keywords:
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 In version 236 NEWS:

 The "uaccess" udev tag has been dropped from /dev/kvm and
 /dev/dri/renderD*.  These devices now have the 0666 permissions by
 default (but this may be changed at build-time). /dev/dri/renderD*
 will now be owned by the "render" group along with /dev/kfd.

 The group name can be changed by updating the rule in /lib/udev/rules.d/50
 -udev-default.rules or before install, rules/50-udev-default.rules.in.

 SUBSYSTEM=="drm", KERNEL=="renderD*", GROUP="render",
 MODE="@GROUP_RENDER_MODE@"
 SUBSYSTEM=="kfd", GROUP="render", MODE="@GROUP_RENDER_MODE@

 I do not see a need for a separate group as the default permissions are
 0666.  If the assigned group is not available, then the group remains at
 the default: root.

 Perhaps we should just remove the GROUP="render" assignment.

 Note that /dev/dri/renderD* appears to be used by a video driver.  See
 https://ffmpeg.org/pipermail/ffmpeg-user/2016-November/034445.html

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Ticket URL: <http://wiki.linuxfromscratch.org/lfs/ticket/4179>
LFS Trac <http://wiki.linuxfromscratch.org/lfs/>
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