Re: pg_dump and large files - is this a problem?

At 07:15 AM 4/10/2002 +1000, Giles Lean wrote:

> > My limited reading of off_t stuff now suggests that it would be brave to
> > assume it is even a simple 64 bit number (or even 3 32 bit numbers).
>
>What are you reading?? If you find a platform with 64 bit file
>offsets that doesn't support 64 bit integral types I will not just be
>surprised but amazed.

Yes, but there is no guarantee that off_t is implemented as such, nor would
we be wise to assume so (most docs say explicitly not to do so).

> > Unless anyone knows of a documented way to get 64 bit uint/int file
> > offsets, I don't see we have mush choice.
>
>If you're on a platform that supports large files it will either have
>a straightforward 64 bit off_t or else will support the "large files
>API" that is common on Unix-like operating systems.
>
>What are you trying to do, exactly?

Again yes, but the problem is the same: we need a way of making the *value*
of an off_t portable (not just assuming it's a int64). In general that
involves knowing how to turn it into a more universal data type (eg. int64,
or even a string). Does the large file API have functions for representing
the off_t values that is portable across architectures? And is the API also
portable?

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