On 3/5/21 1:19 PM, Konstantin Belousov wrote:
On Fri, Mar 05, 2021 at 11:23:56AM +0000, Ryan Moeller wrote:
The branch main has been updated by freqlabs:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=c4ba4aa547184ab401204096cdad9def4ab37964

commit c4ba4aa547184ab401204096cdad9def4ab37964
Author:     Ryan Moeller <freql...@freebsd.org>
AuthorDate: 2021-03-02 10:29:17 +0000
Commit:     Ryan Moeller <freql...@freebsd.org>
CommitDate: 2021-03-05 09:15:55 +0000

     libifconfig: Overhaul ifconfig_media_* interfaces
Define an ifmedia_t type to use for ifmedia words. Add ifconfig_media_lookup_* functions to lookup ifmedia words by name. Get media options as an array of option names rather than formatting it
     as a comma-delimited list into a buffer.
Sprinkle const on static the static description tables for peace of
     mind.
Don't need to zero memory allocated by calloc. Reviewed by: kp
     MFC after:      2 weeks
     Differential Revision:  https://reviews.freebsd.org/D29029
---
  lib/libifconfig/Makefile            |   2 +-
  lib/libifconfig/Symbol.map          |   9 +-
  lib/libifconfig/libifconfig.h       |  69 +++++++-
  lib/libifconfig/libifconfig_media.c | 339 ++++++++++++++++++++++++------------
  share/examples/libifconfig/status.c |  27 ++-
  5 files changed, 324 insertions(+), 122 deletions(-)

diff --git a/lib/libifconfig/Makefile b/lib/libifconfig/Makefile
index 73dad36c1dc5..c6f006018427 100644
--- a/lib/libifconfig/Makefile
+++ b/lib/libifconfig/Makefile
@@ -7,7 +7,7 @@ INTERNALLIB=    true
  LIBADD=               m
SHLIBDIR?= /lib
-SHLIB_MAJOR=   1
+SHLIB_MAJOR=   2
VERSION_DEF= ${LIBCSRCDIR}/Versions.def
  SYMBOL_MAPS=  ${.CURDIR}/Symbol.map
libifconfig is marked as internal, but we provide symbol versioning for it,
and do it in the normal FreeBSD namespace.  On one hand, our policy is to
not bump symvered libs and to provide binary compat shims as needed, on the
other, this is internal lib.

What is the purpose of maintaining symbol versions for it?


I have work in progress that changes libifconfig to a private lib. I'm not sure why markj@ added the symbol map, but I've been forced to maintain it for my later changes to work.


-Ryan

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