It is rather a
part of the VFS interface that has first been completed with
SunOS-3.0 in late 1985.
I think you are once again confused. System Vr3 had something called the
file system switch which is what Berny is talking about. SunOS had
virtual file system layer (VFS) and that would be one of things ported
to SVr4.
But that SVr3 beast is not in Svr4.
Jörg
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EMail:joerg@schily.net (home) Jörg Schilling D-13353 Berlin
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