Comment 26 for bug 1100190

(In reply to Dave Richards from comment #10)
> open("/run/user/413/gvfs/dav:host=content.largo.com,ssl=true,
> prefix=%2Fremote.php%2Fwebdav/Private Documents/About.odt", O_RDWR|O_EXCL) =
> -1 EOPNOTSUPP (Operation not supported)

H. C. commented the following in bug 109520 comment 7:

> Libreoffice opens the file with O_RDWR. Gvfs mounts only support opening
> files with O_TRUNC or O_APPEND. But not O_RDWR by itself.
>
> See...
>
> https://bugzilla.gnome.org/show_bug.cgi?id=748106
> https://bugzilla.gnome.org/show_bug.cgi?id=777152
>
> You will get an "operating not permitted" error which shows up in
> libreoffice as "general input/output error".