nsupdate exit codes

[Bill Larson]

On May 19, 2005, at 12:14 PM, Daniel Rudy wrote:

> What are the exit codes and their meanings for nsupdate?  I'm unable to
> find any documentation on these codes.

I wrote a reply up to send you and then found that your email address 
from your previous posting was "nospam at nospam.net".  If you don't want 
replies to your postings, then don't post.

The documentation for the exit results can be found in the source code 
for nsupdate itself.  Look for the "exit" calls used anywhere, which 
abort the execution, and the "return" calls made in the "main{};" 
program section, which will cause the program to exit.  This isn't a 
difficult program to try and read.

The exit values appear to be:

	0:	No error
	1:	"nsupdate" calling error
	2:	DDNS protocol error

For all failures of "nsupdate", exit codes 1 or 2, there is an 
associated message sent to standard error that should provide further 
information as to what the actual failure was.

Since these result codes aren't "documented", I would suggest that you 
not rely upon the exit value other than a zero meaning success and a 
non-zero meaning failure.  You can use the failure message written to 
stderr to identify exactly what the problem was.

If you try and distinguish between the non-zero, failure, exit codes 
you may be disappointed when a future version of nsupdate changes the 
meaning of these values or adds an addition value.

Bill Larson