The smbfs filesystem is a mountable SMB filesystem for Linux. It does not run on any other systems.
smbfs has not been maintained in the last few years. Instead, development has been focused on another implementation of the CIFS protocol in the kernel. See the CIFS VFS for more information.
Nowadays, the Samba Team needs a dollar instead of pizza ;-)
Samba 4.18.3 (gzipped)
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Patches · Security Updates · GPG Key