Re: C rename returns -1 but error text says no error exists

[Scott Klement <rpg400-l@xxxxxxxxxxxxxxxx>]

Hi Rick,

> Reference service program QP0LLIB1 either directly on the compile or
> by using a binding directory.  This is where the Qp0lRenameUnlink is
> exported from.

That's unnecessary. The system will automatically find QP0LLIB1 and bind 
to it. (Explicitly specifying QP0LLIB1 or a binding directory won't hurt 
anything -- but it's not necessary.)

The ILE binder will automatically find any system-supplied API.  That 
is, any API that's part of the IBM i operating system.   APIs that are 
part of ILE C, Apache, et al, would need to be bound to explicitly.

The IFS APIs are all part the Unix-type APIs category.  They are not 
part of the ILE C Runtime.  Therefore, the IFS APIs do not require any 
special binding.

Frustratingly, the IFS APIs do their error handling via the ILE C 
__errno function.  This was presumably for compatibility with the way 
Unix does things -- but it's frustrating because it blurs the line 
between Unix-type and ILE C Runtime.   FWIW, __errno() and strerror() 
are part of ILE C, and the APIs that actually manipulate the IFS are not.

In IBM i 6.1, IBM fixed this problem.  You no longer need to bind to 
QC2LE to get __errno and strerror() in 6.1..

Anyway, the routines in the ILE C runtime _are_ APIs.  They just are 
part of ILE C instead of being part of IBM i itself.  An API is just a 
routine that provides a way to interface your program with another 
application...