getnameinfo() errors

How come we must use gai_strerror() to get error-text from
getaddrinfo(), but strerror() from getnameinfo().

What where the designers thinking? Is there some logic to this?

--
Gisle V.

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"Gisle Vanem" <(E-Mail Removed)> writes:

> How come we must use gai_strerror() to get error-text from
> getaddrinfo(), but strerror() from getnameinfo().
>
> What where the designers thinking? Is there some logic to this?

Error reporting for getaddrinfo() and getnameinfo() is the same:

* If the return value is 0 then the function was successful.

* If the return value is EAI_SYSTEM then the error code is in
errno and you can use strerror() to get the error text.

* Otherwise use gai_strerror() on the return value to get the
error text.

The RETURN VALUE section of the getnameinfo() manual page on Linux
is a bit misleading, although the ERRORS section does mention that
EAI_SYSTEM means that the error code is in errno.

--
Michael Fuhr
http://www.fuhr.org/~mfuhr/