[Openhpi-devel] New oHpi function to display domains

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Hi,
Currently there is no possibility for an OpenHPI user to know which
domains are defined for his baselibrary, unless he reads and scans the
openhpiclient.conf file. In addition now domains can be defined
dynamically, so it may be important for a user to know the valid domain
ids.
This should be even possible when a session to the default domain cannot
be opened.

Therefore I propose to introduce a new function oHpiDomainEntryGet,
which works similar to the saHpiDrtEntryGet, but uses instead of the DRT
of a specified domain the list of domains known to the baselib. 
The function should also provide access to the definition data of that
domain, that is location of the daemon.

Here is the syntax proposal:

SaErrorT SAHPI_API oHpiDomainEntryGet (
         SAHPI_IN  SaHpiDomainIdT   DomainEntry,
         SAHPI_OUT SaHpiDomainIdT   *NextEntry,
         SAHPI_OUT SaHpiTextBufferT *daemonhost,
         SAHPI_OUT SaHpiUint16T     *port
);

Like in saHpiDrtEntryGet, the user would walk the list of domains,
starting with SAHPI_UNSPECIFIED_DOMAIN_ID, and read all defined domain
ids. 
Parameter daemonhost and port are not necessary here, but this way we
don't need another function oHpiDomainInfoGet to read daemonhost and
port.

This proposal implements feature request 3025777: Support for domain
discovery:
https://sourceforge.net/tracker/?func=detail&aid=3025777&group_id=71730&
atid=532254

Please send comments asap, so I can start implementing it.
Cheers,
Uli