Re: [Bugs-r-devel] Mac bug regressions

[Uwe L. <li...@st...>]

Gorjanc Gregor wrote:
> Bug 2, Priority Primary:
> 
>>> schools.sim <- bugs (data, inits, parameters, .schools.bug, debug=TRUE,
>> +                      WINE="/Applications/Darwine/Wine.bundle/Contents/bin/wine",
>> +                      WINEPATH="/Applications/Darwine/Wine.bundle/Contents/bin/winepath",
>> +                      bugs.directory="/Applications/WinBUGS14", program="winbugs",
>> +                      n.chains=3, n.iter=1000, working.directory=".")
>>
>> display(log)
>> check(Z:/var/folders/z4/z4O5IqhPED0pjZUVP7s0mE+++TI/-Tmp-//RtmpmMFxxp/model58c57c47.txt)
>> cannot open Z:/var/folders/z4/z4O5IqhPED0pjZUVP7s0mE+++TI/-Tmp-//RtmpmMFxxp/model58c57c47.txt
>>
>> As we can see from the log, the model file cannot be opened.  This is
>> because the directory RtmpmMFxxp has the restrictive permissions 700.
>> This naming convention looks like R created this directory.  If so,
>> then can we have R make the permissions 755?  If not, then maybe we
>> should be using C:\windows\temp since it has the right permissions
>> to begin with.
> 
> Are you sure about this? If you use working.directory="." then model file should be written in
> current working directory and not in the temporary folder created by R.
> 
> I looked in ?tempdir() and there is no sign that we could modify permissions. I did not check the
> permissions on linux, but I find it odd that 700 does not allow WinBUGS to open the file. Afterall,
> 700 should mean that all permissions are granted to the user (owner) of the file, which is the user
> who started R and subsequently WinBUGS via wine.


Yes, and this is the idea of R's tempdir(): We should not need to bother 
because the user (!) already generated the temporary directory in which 
we are writing, hence to user should have write permissions.

Uwe




> gg
> 
> 
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