add ctrl_cmd_parse2() to return parsing errors

If a control command fails to parse, we so far discard specific error messages
and instead send just "Command parser error".

In ctrl_cmd_parse() we actually compose detailed error replies, but in the end
simply talloc_free() them and return NULL.

A first step to report these errors to the ctrl command issuer is to not return
NULL and instead return the cmd with type = CTRL_TYPE_ERROR. Add
ctrl_cmd_parse2() to return such instead of NULL.

To stay API compatible, provide ctrl_cmd_parse2() to return a cmd on errors.
ctrl_cmd_parse() retains identical behavior but becomes just a simple wrapper
around ctrl_cmd_parse2() which discards the cmd on error.

No need really to deprecate ctrl_cmd_parse() yet; especially as long as
compiler warnings might break jenkins builds.

Change-Id: I5047c9f977d70b03eea77cbcfd2b96d43ea46880

0 files changed, 0 insertions, 0 deletions