Mail Archives: cygwin/2003/08/18/03:59:15
On Sun, Aug 17, 2003 at 02:59:13PM -0700, ColinB wrote:
> Thanks Corinna, fseeko is new to me!
>
> So for 64 bit file offsets I can use either:
>
> open/lseek/close
>
> or
>
> fopen/fseeko/ftello/fclose
>
> But in both cases do I have to specify #define _FILE_OFFSET_BITS 64 to
> make off_t 64 bit, or will off_t be 64 bits by default in cygwin 1.5.0
> ?
It's transparent. If you build an application using the 1.5.x headers
and libs, the affected types like off_t or fpos_t are 64 bit types
automagically. The same goes for uid_t/gid_t becoming 32 bit instead of
16 bit. To quote a mail I've sent to the cygwin-apps ML a month ago:
[...] please note that the new datatypes are used automatically.
There isn't any choice between e.g. a off_t with 32 bit and a off64_t
with 64 bit and no corresponding functions as stat and stat64.
Building under 1.5.0 means, off_t is 64 bit now. stat is expecting
a struct stat with 64 bit off_t. Full stop. No compile time
options. All or nothing. Well, you got the idea, I guess...
Corinna
--
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Developer mailto:cygwin AT cygwin DOT com
Red Hat, Inc.
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