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- From: seismo!hadron!jsdy@sally.utexas.edu (Joseph S. D. Yao)
- Date: Tue, 4 Nov 86 23:03:27 est
- Organization: Hadron, Inc., Fairfax, VA
-
- In article <6193@ut-sally.UUCP>:
- >From: rgenter@labs-b.bbn.com (Rick Genter)
- >Date: 30 Oct 86 09:57:13 EST (Thu)
- >
- >... various flavors of Unix (such as MERT, Unix' real-time cousin),
- >implemented the file system completely outside the kernel, I suppose as a
- >library of routines. ...
- > If any sort of fundamental change is to be made to the file system for
- >POSIX, I'd prefer moving towards a non-kernel file system. In addition to
- >simplifying the design of the operating system, it also allows users to
- >implement layers on top of the file system, such as case insensitivity,
- >wildcard expansion, network file systems, access methods, etc. Gee, is this
- >starting to sound like streams?
-
- The details of implementation, such as in or out of the kernel,
- and streams, are really irrelevant. Having the file system as
- a separate, layerable part of the system interface as a whole
- is a wonderful idea. This conforms with ideas of modularity,
- motherhood, apple pie, and so forth. Both 4bsd and s5 have, in
- succeeding implementations, tried to isolate FS code at least
- by file in the os:sys directories.
-
- Recent versions of the Unix(R) operating systems even implement
- file system switches, which are the next great step, and would
- probably do everything that Rick or anyone else would like, even
- to mounting MS-DOS, VMS, TOPS-20, or whatever file systems. (Yes,
- even 4.2+ FS's on traditional Unix FS's!) But I haven't seen much
- about them since they were first ballyhooed; and AT&T even seems
- to be withdrawing theirs. (They won't document it, saying that
- they don't want anyone to use it because it might go away.) Perhaps
- this just means that they're thinking of adopting the Sun version
- as a "standard"? Does anyone know anything about this?
- --
-
- Joe Yao hadron!jsdy@seismo.{CSS.GOV,ARPA,UUCP}
- jsdy@hadron.COM (not yet domainised)
-
- Volume-Number: Volume 8, Number 39
-
-