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[libc-0.2] Freebsd Netlink support backported #3555

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[libc-0.2] Freebsd Netlink support backported #3555

wants to merge 3 commits into from

Commits on May 22, 2024

  1. freebsd: move net/if_mib.h contents to submodule 

    There is a conflict of NETLINK_GENERIC definitions between
net/if_mib.h and netlink/netlink.h.  netlink.h is already exported in
the crate root for Linux (and those definitions are already used by at
least crates neli and netlink-packet-route), and if_mib is not much
used yet, so this moves if_mib contents into its own namespace to
leave place for netlink support on FreeBSD (rust-lang#3194).

Module definition moved to the end of file to avoid cryptic style.rs
error "constant found after module when it belongs before".

ctest as of 0.22 cannot be told a given header's symbols live in a
submodule, so let the tests ignore all of them.

Signed-off-by: Yann Dirson <[email protected]>
    @ydirson
    ydirson committed May 22, 2024
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  2. Netlink support for FreeBSD 13.2 and later 

    This is an early subset of the Netlink interface, but it
proves sufficient for monitoring changes in IP addresses,
the coverage can be extended later as needed.

Signed-off-by: Yann Dirson <[email protected]>
    @ydirson
    ydirson committed May 22, 2024
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  3. freebsd/netlink: hide feature between "future-freebsd-netlink" flag 

    To allow the "Netlink on FreeBSD" feature to be usable before 0.3 gets
released, this builds on top of both the netlink feature patch from rust-lang#3201
if explicitely requested through a feature flag, but by default
provides the ifmib constants where they are located in previous 0.2
releases.

Since this relies on creating the netlink constants in a separate
module, and it seems we cannot check those automatically, avoids
testing them.

Signed-off-by: Yann Dirson <[email protected]>
    @ydirson
    ydirson committed May 22, 2024
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