Re: Bash 4.3.30 on AIX 6.1 filename completion

[aixtools]

On 2015-08-03 3:40 PM, Chet Ramey wrote:
> On 8/2/15 8:50 PM, Steve Dahl wrote:
> > If on AIX 6.1, I mount an NFS volume exported from CentOS 6.7, Bash
> > (4.3.30) is unable to do tab completion within that file system. If (for
> > example) I search for files that I know exist, such as:
> >
> >      ls -l /path/to/files/*.h
> >
> > ...no answers are returned even though
> >
> >      ls -l /path/to/files
> >
> > ...will show those files.
> >
> > In the course of trying to understand why AIX didn't like our new NFS
> > server, I found that bash's glob.c depends on opendir(), and that in a
> > simple test on that NFS file system, opendir() fails with EOVERFLOW.
> >
> > The AIX man page for opendir() documents opendir64() but doesn't go into a
> > lot of detail about what it's for other than the inferred hint that it
> > might allow for file sizes larger than 4 GB.
> >
> > The same simple test that gets EOVERFLOW when I use opendir() indeed seems
> > to succeed when I use opendir64(). Once you know the answer, you can find
> > hints on IBM forums that seem to confirm it.
> >
> > Is there already a version of "bash" somewhere that already supports large
> > file systems on AIX if its compilation is configured right?
> Bash and Readline don't use opendir64/readdir64 directly.  You might be
> able to get it to work by using cpp defines in lib/readline/complete.c
>
> Chet
Actually, I am working on a "scandir" program myself, where I am using 
opendir(). The simpliest approach seems to be this at the start of the 
code, i.e., before ANY include files are inserted. One of it's effects 
is to make all opendir() calls automatically convert to opendir64() - no 
code changes needed, and the code works on both AIX - and debian (Linux 
on Power) that I have tested.

/*
 * define _LARGE_FILES needs to be first so that all the include files 
know that
 */
#ifdef _AIX
#define _LARGE_FILES
#endif

Hope this helps!