14 Sep
2017
14 Sep
'17
9:30 p.m.
On Thu, Sep 14, 2017 at 12:15:32PM -0400, Steve Nickolas wrote:
It's mostly Lennart Poettering and his fan club, but it's also
important to remember that Unix was not perfect.
For years, I've been ranting about the telldir/seekdir interface, for
which JFS has three b-trees that have to be updated for every
directory operation --- one of which was added *just* because of
telldir/seekdir. Other file systems make other design choices or go
through other bits of hell just because of telldir/seekdir, but
assuming a 32-bit cookie which must survive potentially indefinitely,
with the readdir "will return file names exactly zero or one times"
guarantees required by POSIX, is rather hellish.
Or, say the atime update requirement, which can be a performance
killer, and for which the default on Linux violates Posix, and so I
suppose it technically isn't allowed to use the Unix trademark anyway.
I'm sure the Plan 9 folks could come up with other Unix shortcomings. :-)
- Ted
Maybe some are
deluded like that. But the more typical case (and I saw
this personally not just on "the Internet") are those who actively and
consciously disdain Unix, and want Penguin kernel based systems to move
to a completely new and different userland, free from any links to Unix
history.
And we should stop assuming they're kidding when they say so openly.
Isn't that pretty much just Lennart Poettering and his fan club?