F17: DirectFB

[Ilyes Gouta]

Gerry,

You could also use DirectFB's X11 system module, so that you can run
DirectFB-based applications in a usual X11 window. You can tell
DirectFB so by using the DFBARGS environment variable:

$ export DFBARGS="system=x11,mode=1280x800"
(probably also w/ disable-module=gl)
$./<your_directfb_application>

Nicolas Chauvet is now upstreaming changes for Fedora to directfb-dev ML.

-Ilyes

On Wed, Aug 29, 2012 at 8:29 PM, Gerry Reno <greno at verizon.net> wrote:
> On 08/29/2012 02:33 PM, Tom Callaway wrote:
>> On 08/29/2012 09:25 AM, Gerry Reno wrote:
>>
>>> DirectFB says that there are Fedora packaging errors which are causing the undefined symbol on XUnlockDisplay and
>>> inability to run as normal user.
>> Upstream is wrong, btw.
>>
>> The dlopen problem is caused by the fact that they don't pass the
>> $(X11VDPAU_LIBS) to the LDFLAGS for linking libdirectfb_vdpau.la.
>>
>> The core issue behind why dfbinfo doesn't run as a "normal" user is due
>> to the fact that the Linux kernel requires CAP_SYS_TTY_CONFIG to do any
>> TTY ioctl() calls. UID 0 (root) has that, but normal users do not. It is
>> possible to give a binary that capability using the "setcap" command.
>>
>> The missing udev rules also factor into this, I suspect.
>>
>> Last but not least, I believe a normal user needs to be in at least the
>> "tty" and "video" groups. (and they need to be active, as reported by
>> `groups`). Since there is no real way to handle this in the package, it
>> just needs to be done by any user who wants to use dfbinfo:
>>
>>    usermod -a -G tty video USERNAME
>>
>> I made an updated package (1.6.1) that has these fixes applied and sets
>> the CAP_SYS_TTY_CONFIG capability to the dfbinfo binary. (Other DirectFB
>> binaries probably need the same magic, but as I am not a DirectFB user,
>> I can't really say which ones.)
>>
>> Please note that I could only get the dfbinfo results as an unprivileged
>> user from the console (not from within X), and those results are not
>> identical to what I get when I run it as root. When I tried to run it
>> from X, my X session crashed and the kernel panicked. Good times. :)
>>
>> Anyways, Gerry, please test and let me know if these packages work for
>> you, and once I hear back, I'll push out updates.
>>
>> http://koji.fedoraproject.org/koji/taskinfo?taskID=4435408
>>
>> ~tom
>>
>> ==
>> Fedora Project
>>
>
> Thanks Tom.
>
> I'll try to check your updates later today and report back.
>
>
> Gerry
>
>
>
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