[Bug 257222] Cannot use libzfs.h from user space programs due to missing libnvpair.h and other dependencies

From: <bugzilla-noreply_at_freebsd.org>
Date: Thu, 09 Sep 2021 04:38:14 UTC

Alan Somers <asomers@FreeBSD.org> changed:

           What    |Removed                     |Added
         Resolution|---                         |Works As Intended
             Status|New                         |Closed
                 CC|                            |asomers@FreeBSD.org

--- Comment #1 from Alan Somers <asomers@FreeBSD.org> ---
The thing about libzfs is that it is not a stable interface.  It was never
intended to be one, and never has been.  It changes frequently, and in
non-backwards compatible ways.  That's why its use is highly discouraged by
programs outside of the base system.  The few that do use it
(sysutils/py-iocage for example) typically break during an OS upgrade.

libzfs_core, OTOH, _is_ a stable interface.  It has a simple API, very similar
to what the zfs command line tools provide.  And it's guaranteed to preserve
backwards compatibility.  I suggest you convert your program to use libzfs_core
instead of libzfs.  If you don't, you'll continue to need the kernel headers.

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