Possible regression in kio with data loss

[Albert Astals Cid]

El dissabte, 20 de gener de 2018, a les 11:56:34 CET, Jaime va escriure:
> Hi,

Is it me or noone reacted to a "data loss regression" email?

That's pretty sad.

> 
>   Last weekend I did the following:
>   * build kio using kdesrc-build
>   * copy the resulting bin/kf5/file.so to /usr/lib64/qt5/plugins/kf5/kio
>   * ldconfig
>   * restart the session
>   Just to be sure that all processes are using the new kio.
> 
>   I copied files to an ntfs filesystem and the files were copied and the
> messages about rights where shown.

How are you copying the files? Dolphin? kdecp5? something else?

Cheers,
  Albert

> 
>   Today I've done the same as last weekend, but when I copy a file to the
> same filesystem, there is a message that the owner can't be changed, and
> the resulting file has always 0 bytes (screenshot attached). If I move the
> file, the original file content is lost, and also the destination has 0
> bytes.
> 
>   This can be reproduced also in a loopback vfat, created following the
> next steps:
> 
> dd if=/dev/zero of=fat.fs bs=1024 count=5120
> (create the file fat.fs with only 5 MB)
> /usr/sbin/mkfs.vfat fat.fs
> (create the filesystem)
> sudo mount -t vfat -o uid=0000,fmask=0007,dmask=0000,rw,noexec,loop fat.fs
> /mnt
> (mount being root the owner)
> 
> try to copy any file to /mnt
> 
> sudo umount /mnt
> (don't forget to umount it when the tests are finished).
> 
> Best Regards.