[kio-extras] [Bug 451408] File preview on some locally-mounted drives (NTFS, NFS, SMB) inappropriately use remote preview settings

[Méven Car]

https://bugs.kde.org/show_bug.cgi?id=451408

--- Comment #10 from Méven Car <meven29 at gmail.com> ---
> /dev/sda3 on /mnt/DADOS type fuseblk (rw,relatime,user_id=0,group_id=0,allow_other,blksize=4096)

> /dev/sdc1 on /commonDisks/F type fuseblk (rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096)
> /dev/sdb1 on /commonDisks/G type fuseblk (rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096)

Indeed that's because your mounts are actually using fuseblk.

The bug is due to fact fuse mounts are assimilated to nfs filesystem, here
wrongfully in kcoreaddons:
https://invent.kde.org/frameworks/kcoreaddons/-/blob/master/src/lib/io/kfilesystemtype.cpp#L129

The way to fix it, is not clear to me, we need to determine "real" filesystem
for the fuse block but I don't know exactly how to do it.
Probably using fuse API statfs,
http://libfuse.github.io/doxygen/structfuse__operations.html#a4e765e29122e7b6b533dc99849a52655

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