Re: C Error Number to Symbol

On 3/19/2025 6:06 PM, Michael Brown wrote:

On 20/3/25 05:20, Arne Vajhøj wrote:

On 3/19/2025 12:08 PM, Craig A. Berry wrote:

On 3/19/25 9:29 AM, Michael Brown wrote:

On 20/3/25 00:38, Craig A. Berry wrote:

I _think_ what he wants is some kind of translation table between errno
values and VMS condition codes.  For example, starting with errno of
ESRCH and getting to RMS$_RNF or vice versa.  I'm not aware of any such
table, and if there were, it wouldn't be a one-to-one  mapping.

>
yes if I get a return status of 98994 I would like to be able to look it up and get "RMS$_RNF" to output that in my error handling routine.

>
No, I guessed wrong.  You are not dealing with errno at all but rather
VMS condition code to message lookup, which, as you've now discovered,
has already been fully answered.

>
I was starting to think that it was about translating from
numeric value to symbolic name, which is a weird one.

$ run moremsgfun
98962 = RMS$_FNF

 This is exactly what I intended with the original post, so this pas source is very interesting to me.

It is just two lib$sys_getmsg calls with flags to get
facility and identity and then it is cross fingers and
hope the symbolic name follow convention of facility$_identity.
Arne