Re: Bash 4.3.30 on AIX 6.1 filename completion

[aixtools]

On 2015-08-12 12:38 PM, aixtools wrote:
> 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!
p.s. - rather than actually add this to ALL source files, adding 
-D_LARGE_FILEs to CPP_FLAGS and/or to CFLAGS is probably the better 
approach.