[OT] Re: cue images

[Sergey Zaharchenko]

On Tue, Jun 29, 2004 at 10:36:00AM +0200,
 artifex probably wrote:
> Hello!
> 
> >> Where are the international standard that describe the ISO file (not
> >> the filesystem!) format?
> > \From the mount_cd9660 manpage
> >>& MOUNT_CD9660(8)      FreeBSD System Manager's Manual     MOUNT_CD9660(8)
> >>& NAME
> >>&      mount_cd9660 - mount an ISO-9660 file system
> Ehh. Bad answer. ;-) It's for the ISO 9660 file system (as it writes),
> not the .iso file format. It's two different things.

The reason of saying that it's standard is that a file in `.iso format'
is an exact image of an ISO standard filesystem. Whatever conventions
are mentioned in the standard, they are the same in an `.iso format
file'. If ISO 9660 says the root directory starts at byte XXX, there it
starts in the image. If ISO says the integers will be encoded in both
little-endian and big-endian formats, so they are in the image.

> For example you
> can store macintosh filesystem in .iso file and you can't mount by
> mount_cd9660 of course but it still an .iso file. Right?

If the image you stored is indeed an image of an ISO filesystem, I can.
man vnconfig (4.x) or man mdconfig (5.x).

If not --- well, I can store a picture of a nude <ethnic> in JPG format
and name it to have an .iso extension. Surely we are talking about
formats, not extensions.

I don't mean the .iso extension is standard. You can make it
`.yabadabadoo' if you prefer.

I don't mean that an `.iso format file' can describe absolutely
anything (audio, etc.). But it does its job.

A waek analogy, but if I measure my weight with the device at hand and
tell you the number in kilograms, you won't object saying that I didn't
use the international platinum-iridium kilogram for my measurements? An
.iso image is an `instance' of an ISO filesystem, just as my
weightometer:) is an `instance' of that kilogram.

-- 
DoubleF
Excessive login or logout messages are a sure sign of senility.
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