How to provide an RPG ILE program with a list of files in a QNTC directory

Hi all,

Hope you are all fine.

For a new RPG ILE procedure, I have to list the content of a directory
defined under QNTC.

The directory is reachable and readable by a specific user and from within
WRKLNK everything works fine.

Now, I am looking for the right technique, or simply the most appropriate,
to list the directory content inside an RPG ILE program.

These are my unsuccessful tries, all executed under the owner control and
authorization:

1. RTVDIRINF DIR('/QNTC/FS1-21/myFolder') -> final files are empty
2. ftp '127.0.0.1' -> ls -l /QNTC/FS1-21/myFolder -> "Path does not
exist"
3. via SQL from TABLE(IFS_OBJECT_STATISTICS) -> explicitly won't work
and I couldn't find a better choice

The only successful try was:
DSPLNK OBJ('/QNTC/FS1-21/myFolder/*') OUTPUT(*PRINT)
which obliges me to read the spool file right after.

I unsuccessfully looked through midrange.com archives and neither was the
IBM official documentation of help.

Is coding using API the only alternative?

Thank you all and have a great day
Lucia