btfs: fuse_opt.c:55: fuse_opt_add_arg: Assertion `!args->argv || args->allocated' failed. about btfs

[pitsi]

This weekend, I had the chance to do some testing with various distros on a vm and here is what I found.
Btfs did not work on kali 2024.1 and ubuntu 24.04 (daily build, because there are no betas yet), popping the same error as above. For anyone that does not know, they are all based on debian testing or unstable. I would add siduction to that, but its iso is like 9 months old and updating the installation would take me more hours than actually testing btfs

Btfs worked fine on debian 12.5, fedora 39, arch (endeavour), ubuntu 22.04 and alpine. But with one catch: I had to manually set the mountpoint to all of them, because, as you can see in the output below, fuse says that "the mountpoint is not empty".

alpine:~# ls -Ra btfs/
btfs/:
.   ..

alpine:~# btfs magnet:?xt=urn:btih:dd8255ecdc7ca55fb0bbf81323d87062db1f6d1c btfs/
fuse: mountpoint is not empty
fuse: if you are sure this is safe, use the 'nonempty' mount option

alpine:~# mkdir /tmp/btfs

alpine:~# btfs magnet:?xt=urn:btih:dd8255ecdc7ca55fb0bbf81323d87062db1f6d1c /tmp/btfs/

alpine:~# btfsstat btfs/btfs-gLiboD/
btfsstat: btfs/btfs-gLiboD/ is not a btfs mount: No data available

alpine:~# btfsstat /tmp/btfs/
btfs/
    Big Buck Bunny/
        Big Buck Bunny.en.srt (  0%)
        Big Buck Bunny.mp4 (  7%)
        poster.jpg (  0%)

alpine:~#

Forcing the mount like so
btfs magnet:?xt=urn:btih:dd8255ecdc7ca55fb0bbf81323d87062db1f6d1c btfs/ -o nonempty
made the terminal freeze in ALL those distros! I had to ssh or switch to another tty and kill btfs to unfreeze it!

[pitsi]

Now that the t64 transition is ending in debian, I gave btfs/btplay another try and this time it just worked!

However, the issue at the end with the noempty option is still there and I was not able to kill btfs even with killall -9! I had to reboot my system with reisub to make it stop and remove the btfs folder after reboot.