On 03/06/2018 12:14 AM, Martin Wilck wrote:
> Add an API for "foreign" multipaths. Foreign libraries are loaded
> from ${multipath_dir}/libforeign-*.so, as we do for checkers.
>
> Refer to "foreign.h" for details about the API itself. Like we do for
> checkers, high-level multipath code isn't supposed to call the API directly,
> but rather the wrapper functions declared in "foreign.h".
>
> This API is used only for displaying information and for logging. An extension to
> other functionality (such as monitoring or administration) might be feasible,
> but is not planned.
>
> Foreign libraries communicate with libmultipath through the API defined in
> "foreign.h". The foreign library can implement multipath maps, pathgroups,
> and paths as it likes, they just need to provide the simple interfaces
> defined in "generic.h" to libmultipath. These interfaces are used in libmultipath's
> "print" implementation to convey various bits of information to users. By
> using the same interfaces for printing that libmultipath uses internally,
> foreign library implementations can focus on the technical side without
> worrying about output formatting compatibility.
>
> Signed-off-by: Martin Wilck <mwilck@xxxxxxxx>
> ---
> libmultipath/Makefile | 2 +-
> libmultipath/foreign.c | 602 +++++++++++++++++++++++++++++++++++++++++++++++++
> libmultipath/foreign.h | 322 ++++++++++++++++++++++++++
> 3 files changed, 925 insertions(+), 1 deletion(-)
> create mode 100644 libmultipath/foreign.c
> create mode 100644 libmultipath/foreign.h
>
Reviewed-by: Hannes Reinecke <hare@xxxxxxxx>
Cheers,
Hannes
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Dr. Hannes Reinecke Teamlead Storage & Networking
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SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
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