12 Jan
2017
12 Jan
'17
4:57 a.m.
Dan Cross <crossd(a)gmail.com> wrote:
On Tue, Jan 10, 2017 at 11:20 AM, Joerg Schilling
<schily(a)schily.net> wrote:
It is rather a part of the VFS interface that has first been completed with
SunOS-3.0 in late 1985.
There are small changes introduced into the VFS switch for SVr4 to permit to
mount special filesystems without the need of root permissions. They cause the
major differences between SunOS-4 and Svr4.
VFS uses two interface parts:
- the VFS switch with the vfs interface functions to mount a filesystem
and to stat it
- the VFS vnode interface with the vnode interface functions to hold the
interfaces like open(), mmap(), ...
Jörg
--
EMail:joerg@schily.net (home) Jörg Schilling D-13353 Berlin
joerg.schilling(a)fokus.fraunhofer.de (work) Blog: http://schily.blogspot.com/
URL: http://cdrecord.org/private/ http://sourceforge.net/projects/schilytools/files/
Berny Goodheart <berny(a)berwynlodge.com>
wrote:
[snip]
Surely Berny meant the file system switch here, which could have come from
early system V, but originated in research Unix (8th edition?). Note that
this list is very similar to that in the early part of his book on System V
internals. VFSSW <=== NO, this is
from SunOS-4