Help with a code snippet that fails in mock buildroots

[Clark Williams]

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Lennart Poettering wrote:
> On Fri, 11.04.08 22:07, Deji Akingunola (dakingun at gmail.com) wrote:
> 
>> Hi all,
>>
>> Can someone please explain (and possibly provide a solution) to me why
>> the code below is failing in mock buildroot. It is run to check if the
>> 'shm_open' function works when configuring latest mpich2 package, and
>> its result is used to create a definition that's used later when
>> compiling the package. The code runs fine (and the package builds fine
>> too) on my rawhide system.
>> Thanks.
> 
> Is /dev/shm/ available in the chroot env? shm_open() is basically the
> same as open(), however, it prepends /dev/shm to the file name. If
> that dir is not writable (should be mounted as tmpfs) shm_open() fails,
> 
> Lennart
> 

It used to be there, but it may have gotten dropped in the massive code reshuffle
that mock went through in the past few months. The code to make the /dev/pts and
/dev/shm dirs is still there as well as the code to mount/umount these devices, but I
don't actually see them when I run a mock --shell.

I'll dig into it a bit more to see if we have a regression.

Clark
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