vboxsharedfs - Too many levels of symbolic links

[Oskar Skog]

vboxsharedfs file systems no longer work. Any attempt to access will
result in "too many levels of symbolic links".

This only affects the VirtualBox shared folder, the Samba share works
just fine.

Last time I updated (before today) was sometime before the 10th of
September.

MSYS2 has the same problem, but no one seems to have reported it to
Cygwin:
https://github.com/msys2/msys2-runtime/issues/58


user@DESKTOP-******* ~$ ls /cygdrive/z
ls: cannot access '/cygdrive/z': Too many levels of symbolic links
user@DESKTOP-******* ~$ mount
C:/Cygwin/bin on /usr/bin type ntfs (binary,auto)
C:/Cygwin/lib on /usr/lib type ntfs (binary,auto)
C:/Cygwin on / type ntfs (binary,auto)
C: on /cygdrive/c type ntfs (binary,posix=0,user,noumount,auto)
D: on /cygdrive/d type iso9660 (binary,posix=0,user,noumount,auto)
Y: on /cygdrive/y type smbfs (binary,posix=0,user,noumount,auto)
Z: on /cygdrive/z type vboxsharedfolderfs 
(binary,posix=0,user,noumount,auto)
user@DESKTOP-******* ~$ uname -a
CYGWIN_NT-10.0 DESKTOP-* 3.3.2(0.341/5/3) 2021-11-08 16:55 x86_64 Cygwin