Re: [GNUnet-developers] using $TMPDIR instead of /tmp

[Nils Gillmann]

Christian Grothoff transcribed 3.8K bytes:
> On 05/05/2018 03:01 PM, Nils Gillmann wrote:
> >> Agreed, it would be great if you could change the tests to use the
> > 
> > Okay, any idea how the .conf files should be adjusted, given that
> > you most likely came up with the config system?
> 
> Actually, we just use some shell-ism for that.
> 
> Regardless, I just added GNUNET_TMP to util.conf, so you should be able
> to replace any occurrence of "/tmp/foo" in configuration files with
> "$GNUNET_TMP/foo", which will result in $TMPDIR/gnunet/foo (or $TMP, or
> /tmp, if $TMPDIR is undefined) being used.

A recent release of nix made me put evaluating /tmp as a secure location
on my list of things to check. they included notes that they dropped /tmp
for security reasons and moved elsewhere iirc. A different problem though.

Anyways I just had some time to work on this, could you read
5f627ce1a78f662d928fa6c73a90342d8bff5cf3 and tell me if I understood
the conversation we had here and your small commit right?

> > I think they don't require absolute filenames, but if we have multiple 
> > flavors
> > of how and where the temporary directory can be located, what do we use in
> > place of /tmp/gnunet-something/file then?
> 
> If you need something per-instance (if multiple peers are running), such
> as UNIX domain sockets, use $GNUNET_USER_RUNTIME_DIR or for system
> services $GNUNET_RUNTIME_DIR.  For classical temporary files (say of the
> driver of a testcase, we now have $GNUNET_TMP.  For per-peer caches use
> $GNUNET_CACHE_HOME.  All are defined in src/util/util.conf
> 
> > I assume a config-file function that does the same as the function in 
> > libgnunetutil
> > disk.c could be useful.
> 
> The above effectively do the same, right now without the check for
> $TEMP, but that could be added if desired.
> 




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