problems with _LARGE_FILES on AIX 5.1 with 32-bit kernel

[Andreas Schott]

Hi all,

according to the problem record I opened at IBM (51921) a
mkstemp64 will be included in libc.a. Here the last entry
from the problem record dated 03/03/04:

Based on the inputs from the developers we shall be                     
adding a mkstemp64 routine to libc.a                                    
.                                                                       
ACTION PLAN                                                             
.                                                                       
Create an APAR and RQ the PMR.                                          


jw schultz writes:
> On Thu, Feb 13, 2003 at 05:01:58PM +0100, Andreas Schott wrote:
> > Dear rsync-developers,
> > 
> > on AIX5.1 with 32-bit kernel one can have large-file support.
> > rsync in principle supports it correctly since the flag
> > _LARGE_FILES is treated correctly in the /usr/include/*.h
> > But there is one point missing, the mkstemp is not opening
> > a large file. So syncing large files crash after 2GB.
> > To avoid this one could either put a
> > 
> > #ifdef _LARGE_FILES
> > #undef HAVE_SECURE_MKSTEMP
> > #endif
> > 
> > at the beginning of syscall.c or in rsync.h, or one could add a
> > 
> >   &&!defined(_LARGE_FILES)
> > 
> > in line 154 of syscall.c
> > 
> > Best configure would not define HAVE_SECURE_MKSTEMP if
> > _LARGE_FILES is defined, because mkstemp is not secure
> > for large files. There is no mkstemp64.
> > 
> > I did not check, whether with a 64-bit-kernel the mkstemp
> > works properly, since I have no access to a machine running
> > AIX5.1 in 64-bit kernel-mode.
> > 
> > For replies, pleas reply directly, since I am not on the list.
> 
> This is an ongoing problem with AIX and only AIX.  If you
> have a support contract file a bug report against libc with IBM.
> open() is working, they just need to fix mkstemp in the library.
> 
> The fix (workaround) should go in autoconf.  I'd consider
> doing it but i neither have acccess to an AIX system nor am
> a wiz with autoconf. It needs to be AIX specific.
> 
> -- 
> ________________________________________________________________
> 	J.W. Schultz            Pegasystems Technologies
> 	email address:		jw at pegasys.ws
> 
> 		Remember Cernan and Schmitt

-- 

Mit freundlichen Grüßen
Andreas Schott.
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