device-mapper-multipath/0060-multipathd-replace-libreadline-with-libedit.patch
Benjamin Marzinski e066ac569f device-mapper-multipath-0.8.7-11
Add 0059-multipathd-Add-missing-ctype-include.patch
Add 0060-multipathd-replace-libreadline-with-libedit.patch
  * replace readline with libedit, to avoid license conflicts
Resolves: bz #2119896
2022-08-19 17:10:27 -05:00

104 lines
3.0 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Martin Wilck <mwilck@suse.com>
Date: Fri, 12 Aug 2022 18:58:15 +0200
Subject: [PATCH] multipathd: replace libreadline with libedit
Linking multipathd with libreadline may cause a license conflict,
because libreadline is licensed under GPL-3.0-or-later, and
libmultipath contains several files under GPL-2.0.
See:
https://github.com/opensvc/multipath-tools/issues/36
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=979095
https://www.gnu.org/licenses/gpl-faq.html#AllCompatibility
Replace the readline functionality with libedit, which comes under
a BSD license. The readline library can still be enabled (e.g. for
binaries not intended to be distributed) by running
"make READLINE=libreadline".
Signed-off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
---
Makefile.inc | 5 +++++
multipathd/Makefile | 12 +++++++++++-
multipathd/cli.c | 5 +++++
multipathd/uxclnt.c | 6 ++++++
4 files changed, 27 insertions(+), 1 deletion(-)
diff --git a/Makefile.inc b/Makefile.inc
index 688c4599..05027703 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -14,6 +14,11 @@
#
# Uncomment to disable dmevents polling support
# ENABLE_DMEVENTS_POLL = 0
+#
+# Readline library to use, libedit or libreadline
+# Caution: Using libreadline may make the multipathd binary undistributable,
+# see https://github.com/opensvc/multipath-tools/issues/36
+READLINE = libedit
PKGCONFIG ?= pkg-config
diff --git a/multipathd/Makefile b/multipathd/Makefile
index cd6f7e6d..00342464 100644
--- a/multipathd/Makefile
+++ b/multipathd/Makefile
@@ -19,7 +19,17 @@ CFLAGS += $(BIN_CFLAGS) -I$(multipathdir) -I$(mpathpersistdir) \
LDFLAGS += $(BIN_LDFLAGS)
LIBDEPS += -L$(multipathdir) -lmultipath -L$(mpathpersistdir) -lmpathpersist \
-L$(mpathcmddir) -lmpathcmd -ludev -ldl -lurcu -lpthread \
- -ldevmapper -lreadline
+ -ldevmapper
+
+ifeq ($(READLINE),libedit)
+CFLAGS += -DUSE_LIBEDIT
+LIBDEPS += -ledit
+endif
+ifeq ($(READLINE),libreadline)
+CFLAGS += -DUSE_LIBREADLINE
+LIBDEPS += -lreadline
+endif
+
CFLAGS += $(shell $(PKGCONFIG) --modversion liburcu 2>/dev/null | \
awk -F. '{ printf("-DURCU_VERSION=0x%06x", 256 * ( 256 * $$1 + $$2) + $$3); }')
diff --git a/multipathd/cli.c b/multipathd/cli.c
index 4d6c37c9..cc547e67 100644
--- a/multipathd/cli.c
+++ b/multipathd/cli.c
@@ -11,7 +11,12 @@
#include "parser.h"
#include "util.h"
#include "version.h"
+#ifdef USE_LIBEDIT
+#include <editline/readline.h>
+#endif
+#ifdef USE_LIBREADLINE
#include <readline/readline.h>
+#endif
#include "mpath_cmd.h"
#include "cli.h"
diff --git a/multipathd/uxclnt.c b/multipathd/uxclnt.c
index f16a7309..2c17d8fc 100644
--- a/multipathd/uxclnt.c
+++ b/multipathd/uxclnt.c
@@ -16,8 +16,14 @@
#include <sys/socket.h>
#include <sys/un.h>
#include <poll.h>
+
+#ifdef USE_LIBEDIT
+#include <editline/readline.h>
+#endif
+#ifdef USE_LIBREADLINE
#include <readline/readline.h>
#include <readline/history.h>
+#endif
#include "mpath_cmd.h"
#include "uxsock.h"