file access to data-dir is not checked

[DavidBruchmann]

File access to data-dir is not checked and the leads to missing or wrong log-messages.
On some level something like this can be logged and shown in cli:

ERROR	msgwriter	src/common/scoped_message_writer.h:102	Error: Couldn't connect to daemon: 127.0.0.1:18081

and after changing some access rights but not sufficient, only the info about opening is shown:

INFO	global	src/cryptonote_core/cryptonote_core.cpp:517	Loading blockchain from folder G:\___MONERO___\lmdb ...

In both case the culprit is only getting visible by an adjusted bat-file with the additional failing parameter ('--data-dir' ):

REM Execute the Monero daemon and then stay with window open after it exits
"C:\Program Files\Monero GUI Wallet\monerod.exe" --data-dir="G:\___MONERO___"
PAUSE

executing this, shows at least the response "Access denied"

MINGW64 /c/Program Files/Monero GUI Wallet
$ ./monero-daemon.bat

C:\Program Files\Monero GUI Wallet>REM Execute the Monero daemon and then stay with window open after it exits

C:\Program Files\Monero GUI Wallet>"C:\Program Files\Monero GUI Wallet\monerod.exe" --data-dir="G:\___MONERO___"
Access is denied.

C:\Program Files\Monero GUI Wallet>PAUSE

Access rights in windows are a pain for me and concerning this I couldn't solve the issue yet, but at least correct error-messages would have reduced the pain. Therefore I also can't describe in detail what I did to shift from error-message one to the lapidary info-message, I changed several details and neither can recall everyone nor I know which one might be responsible that the net-work-message disappeared. At least I never changed anything which was really related to the network but concerning access rights and users.
The strange thing is that I had access in the beginning when I entered the new path in the gui, but opening it again after shutting down wasn't possible anymore. but this is another problem and might need another git-issue.

This issue might be related to #6533 and #3874.
It might also related to many or all issues that can be found with the search for "data-dir".

[thoran]

I found the error quote confusing also. While I suspected that the directory not being writable was the issue, I nonetheless appreciate that this issue was here to confirm those suspicions.

[ttkdigital]

I agree this error was SO confusing - had me chasing my tail for weeks to be honest. THIS post, while horrified that he was using standard windows setup and doing everything on C:, led to a solution. So while I had the gui running I could not get it to work. I created a bat as described and ran that in command window - and finally got the "access denied" error instead of the meaningless could not connect to Florin message. Saved the bat, setup a shortcut to open the command window as authenticator and opened it - BOOM working for the first time in AGES. Thanks for your input @DavidBruchmann , really appreciate it ;)