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

[Christian Grothoff]

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.

> 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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