multipath-tools: support json_c-0.14

pkgs/os-specific/linux/multipath-tools/default.nix

@@ -10,6 +10,11 @@ stdenv.mkDerivation rec {
     sha256 = "1mgjylklh1cx8px8ffgl12kyc0ln3445vbabd2sy8chq31rpiiq8";
   };
 
+  patches = [
+    # fix build with json-c 0.14 https://www.redhat.com/archives/dm-devel/2020-May/msg00261.html
+    ./json-c-0.14.patch
+  ];
+
   postPatch = ''
     substituteInPlace libmultipath/Makefile --replace /usr/include/libdevmapper.h ${lvm2}/include/libdevmapper.h
     sed -i -re '

pkgs/os-specific/linux/multipath-tools/json-c-0.14.patch

@@ -0,0 +1,21 @@
+diff --git a/libdmmp/libdmmp_private.h b/libdmmp/libdmmp_private.h
+index ac85b63f..b1a6ddea 100644
+--- a/libdmmp/libdmmp_private.h
++++ b/libdmmp/libdmmp_private.h
+@@ -30,6 +30,7 @@
+ #include <stdint.h>
+ #include <string.h>
+ #include <assert.h>
++#include <stdbool.h>
+ #include <json.h>
+ 
+ #include "libdmmp/libdmmp.h"
+@@ -82,7 +83,7 @@ static out_type func_name(struct dmmp_context *ctx, const char *var_name) { \
+ do { \
+ 	json_type j_type = json_type_null; \
+ 	json_object *j_obj_tmp = NULL; \
+-	if (json_object_object_get_ex(j_obj, key, &j_obj_tmp) != TRUE) { \
++	if (json_object_object_get_ex(j_obj, key, &j_obj_tmp) != true) { \
+ 		_error(ctx, "Invalid JSON output from multipathd IPC: " \
+ 		       "key '%s' not found", key); \
+ 		rc = DMMP_ERR_IPC_ERROR; \