utACK. If there is a good reason for that line to be there on OSX only, then it needs a comment justifying it.

It seems that this was there as long as GetDefaultDatadir has been there: https://github.com/bitcoin/bitcoin/tree/d882773789ea3894de7163f7bb880c5b23072882/util.cpp

Looks like this is not for merging...

??

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On 10 Apr 2016, at 16:40, paveljanik notifications@github.com wrote:

Looks like this is not for merging...

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According to the comment mentioned above, you are only trying if this will work. Your real problem is different though, I think. Can you investigate it a bit more please?

pavel$ sudo -u test env | grep HOME
HOME=/Users/pavel
pavel$ sudo -H -u test env | grep HOME
HOME=/Users/test
pavel$ 

@mrCertified ?

@paveljanik The change is for merging. As I said above, if there is a reason for the line to be there it needs to be justified with a comment.

@sipa yes, but someone should really investigate, how bitcoind/-Qt works when the parent directory (ie. Library/Application Support) is not created/is not writable by the current user or does not exist at all (where/how will we write the config file, blocks, chainstate etc?). I suspect this hides some other problem down in the code...

But if proven to work (not just compile ;-), I'm happy with making OS X the same as "Unix" branch there - @alexreg can you please make the OS X branch to directly return the full path and not changing it in two passes (1. add L/A S, 2. add /Bitcoin) and then test with a real user without that directory or with bad permissions on that directory? How will bitcoind/-Qt work in such cases?

But if the data directory has been changed to a different value, the only reason GetDefaultDataDir() is called is to display what the default would have been. (I'm ignoring the slightly more complicated behaviour in -qt). So making sure that (part of) that path exists makes no sense.

... exist and is writable...

utACK.
Creating ~/Library/Application Support is useless (on OSX).

I’m not sure exactly what you mean. I don’t really code C++. Could you give me the diff please, and I’ll apply it?

I’ve already tested both those cases though, and it works as it should.

On 11 Apr 2016, at 08:30, paveljanik notifications@github.com wrote:

@sipa https://github.com/sipa yes, but someone should really investigate, how bitcoind/-Qt works when the parent directory (ie. Library/Application Support) is not created/is not writable by the current user or does not exist at all (where/how will we write the config file, blocks, chainstate etc?). I suspect this hides some other problem down in the code...

But if proven to work (not just compile ;-), I'm happy with making OS X the same as "Unix" branch there - @alexreg https://github.com/alexreg can you please make the OS X branch to directly return the full path and not changing it in two passes (1. add L/A S, 2. add /Bitcoin) and then test with a real user without that directory or with bad permissions on that directory? How will bitcoind/-Qt work in such cases?

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Just return pathRet / "Library/Application Support/Bitcoin" ...

Oh right. Done now.

utACK 0f2fd2cec05b90d071b30eb522061e1c5144b367 after squash

Please squash both commits into one.

I don’t use Git much, so no idea how to do that.

On 12 Apr 2016, at 21:00, paveljanik notifications@github.com wrote:

Please squash both commits into one.

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Wladimir explains in #7458, or just do a google search

utACK 41dbc48

ACK 41dbc48

Hmm this is indeed weird, why would this need a TryCreateDirectory on OSX.

Happy that this solves your problem.

utACK 41dbc48

I digged in the git history, but could not find something important. But here is the wild guess: on OS X, the config files are in ~/Library/Application Support. On other unixes, config directory .bitcoin is directly in the home directory. And the wild guess is that this "mkdir -p parent_directory" had to be somewhere, so someone decided it could be here 8)

Thanks for accepting this, guys.

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On 14 Apr 2016, at 12:28, Wladimir J. van der Laan notifications@github.com wrote:

Hmm this is indeed weird, why would this need a TryCreateDirectory on OSX.

Happy that this solves your problem.

utACK 41dbc48

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Backported as part of #7938. Removing label 'Needs backport'.