[RFD] Trying to move Cygwin over to 64 bit file access
Fri Jun 14 02:42:00 GMT 2002
On Wed, Jun 12, 2002 at 08:01:41PM -0400, J. Johnston wrote:
> 1. you don't use __CYGWIN__ as the flag to check since other platforms may need/want this
So we need a configure option that the target OS supports 64 bit file
access. Something like __HAVE_FILEACCESS64__ or similar. Another
question comes to mind:
What about the other datatypes? Since we tried to keep the impact
to newlib as small as possible, we defined several datatypes only
locally in Cygwin as there are
struct __stat32, struct __stat64
struct __group16, struct __group32
Fortunately `struct passwd' already contained the uid and gid
members as `int', so a new struct was unnecessary.
Should we move all that stuff back to newlib? Or only the __offXX_t
stuff? Unfortunately, struct __stat64 needs both, 64 bit off_t and
32 bit uid_t and gid_t. So it's somewhat complex to do the one thing
and not the other.
> 2. you are consistent with the naming scheme (_lseek64 vs lseek64)
> In the case above, the cast should be (__loff_t)-1 but I am sure you would have spotted
> that if it wasn't just an example.
Yeah, sure. Obviously this *requires* to have __offXX_t types defined
in newlib. Oh boy.
> It would also be nice if you could update the reent docs to mention that for platforms that
> support 64-bit platforms they should set flag-x and supply OS calls: a, b, c...
It will take some time to get this done, anyway. So, yes, we'll try
to keep the docs in sync, somehow.
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