[bisq-network/bisq] Error cannot run the program (#531)

[Bernard Labno]

I'm getting this on linux:

>ERROR b.n.p2p.network.TorNetworkNode: Tor node creation failed: java.io.IOException: java.io.IOException: Cannot run program "/mnt/pen/Bisq/btc_mainnet/tor/tor" (in directory "/mnt/pen/Bisq/btc_mainnet/tor"): error=13, Permission denied 

however it seems that the tor file has correct (executable) permission:

>ls -l /mnt/pen/Bisq/btc_mainnet/tor
-rw-r--r--  1 bernard bernard 4295464 Mar 18 06:46 geoip
-rw-r--r--  1 bernard bernard 2615115 Mar 18 06:46 geoip6
-rwxr--r--  1 bernard bernard 2282608 Mar 18 06:46 libcrypto.so.1.0.0*
-rwxr--r--  1 bernard bernard  371064 Mar 18 06:46 libevent-2.1.so.6*
-rwxr--r--  1 bernard bernard  622427 Mar 18 06:46 libgmp.so.10*
-rwxr--r--  1 bernard bernard  486600 Mar 18 06:46 libssl.so.1.0.0*
drwxr-xr-x  2 bernard bernard    4096 Mar 18 06:46 libstdc++/
drwxr-xr-x 13 bernard bernard    4096 Mar 18 06:46 PluggableTransports/
-rwxr-xr-x  1 bernard bernard 3190832 Mar 18 06:46 tor*
-rw-r--r--  1 bernard bernard     707 Mar 18 06:46 torrc

This must be something related to running from usb flash drive...
Right, just a glimpse at /etc/mtab and I see this:
 >/dev/sda2 /mnt/pen ext4 rw,nosuid,nodev,noexec,relatime,data=ordered 0 0

Critical bit is `noexec` which means that executables cannot be run from that partition.

A quick fix is to add dedicated entry just for mounting usb flash drive with Bisq:
>/dev/sda2       /mnt/Bisq       auto    noauto,user,exec        0 0

Now I can run Bisq from my usb flash drive with `--appDataDir=/mnt/Bisq/Bisq`.

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