Hello,
Thank you for the comment.
I also find following commit.
  -
https://github.com/linux-audit/audit-userspace/commit/e63a8b1628170151016...
BTW, I found another license question.
The libauparse.so are created following source codes.
In 'auparse/Makefile.am'
AM_CPPFLAGS = -I. -I${top_srcdir} -I${top_srcdir}/src -I${top_srcdir}/lib
-I${top_srcdir}/common
                                                                      :
libauparse_la_SOURCES = lru.c interpret.c nvlist.c ellist.c		\
	auparse.c auditd-config.c message.c data_buf.c 			\
	auparse-defs.h	auparse-idata.h data_buf.h 			\
	nvlist.h auparse.h ellist.h					\
	internal.h lru.h rnode.h interpret.h				\
	private.h expression.c expression.h tty_named_keys.h		\
	normalize.c normalize-llist.c normalize-llist.h 		\
	normalize-internal.h normalize_obj_kind_map.h			\
	normalize_record_map.h normalize_syscall_map.h
We can find following line in internal.h
#include "auditd-config.h"
I can find src/auditd-config.h file which is GPLv2.
The "src/auditd-config.h" should be also LGPLv2.1
Regardss,
 ----- Original Message -----
 
 From: "Steve Grubb" <sgrubb(a)redhat.com>
 To: "linux-audit(a)redhat.com" <linux-audit(a)redhat.com>
 Cc: "hiroaki.fuse(a)ymail.ne.jp" <hiroaki.fuse(a)ymail.ne.jp>
 Date: 2023/02/01 水 00:53
 Subject: Re: audit library license
 
 
 Hello,
 
 On Monday, January 30, 2023 7:55:20 PM EST hiroaki.fuse(a)ymail.ne.jp wrote:
 > Dear All members,
 > 
 > We can find following lines in audit/README file
 > 
 > LICENSE
 > =======
 > The audit daemon is released as GPL'd code. The audit daemon's libraries
 > libaudit.* and libauparse.* are released under LGPL so that it may be
 > linked with 3rd party software.
 > 
 > I found that latest audit library linked libaucommon.so.
 > 
 > ./lib/Makefile.in:AM_CPPFLAGS = -I. -I${top_srcdir} -I${top_srcdir}/auparse
 > -I${top_srcdir}/common ./lib/Makefile.in:libaudit_la_LIBADD =
 > $(CAPNG_LDADD) ${top_builddir}/common/libaucommon.la
 > ./lib/Makefile.in:libaudit_la_DEPENDENCIES = $(libaudit_la_SOURCES)
 > ../config.h ${top_builddir}/common/libaucommon.la
 > 
 > ./auparse/Makefile.am:AM_CPPFLAGS = -I. -I${top_srcdir} -I${top_srcdir}/src
 > -I${top_srcdir}/lib -I${top_srcdir}/common
 > ./auparse/Makefile.am:libauparse_la_LIBADD =
 > ${top_builddir}/lib/libaudit.la ${top_builddir}/common/libaucommon.la
 > ./auparse/Makefile.am:libauparse_la_DEPENDENCIES =
 > $(libauparse_la_SOURCES) ${top_builddir}/config.h
 > ${top_builddir}/common/libaucommon.la
 > 
 > Libaucommo.so is created by following files
 > 
 > ./common/Makefile.am:libaucommon_la_SOURCES = audit-fgets.c strsplit.c
 > 
 > And the license of audit/common/audit-fgets.c is GPLv2
 > 
 > This mean the license of latest audit libraries are also GPLv2.
 > 
 > Is my understanding correct?
 
 The intention stated in the README file is correct. The code in question is 
 only used by 3 plugins which are GPL and those functions are hidden from 
 external users of libaudit. The code can be relicenced to make it LGPL so 
 everything matches the intentions.
 
 -Steve
 
 
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