mdadm: Fix build with musl

Define _POSIX_C_SOURCE if not defined
Add sockaddr_un* to sockaddr* typecast to make compiler happy

(From OE-Core rev: cdb858caadd81d3bdc9ea3fd596e3eab84ec2d81)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-extended/mdadm/files/0001-Define-_POSIX_C_SOURCE-if-undefined.patch

@@ -0,0 +1,59 @@
+From d74b02d4653d1ea26029c2528eb93d7268b83eb3 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Wed, 13 Jan 2016 07:28:33 +0000
+Subject: [PATCH] Define _POSIX_C_SOURCE if undefined
+
+typecast second argument of connect() API to use struct sockaddr*
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+Upstream-Status: Pending
+
+ config.c | 3 +++
+ mdmon.c  | 2 +-
+ msg.c    | 2 +-
+ 3 files changed, 5 insertions(+), 2 deletions(-)
+
+diff --git a/config.c b/config.c
+index a882ed3..a675688 100644
+--- a/config.c
++++ b/config.c
+@@ -63,6 +63,9 @@
+  * but may not wrap over lines
+  *
+  */
++#ifndef _POSIX_C_SOURCE
++#define _POSIX_C_SOURCE 200809L
++#endif
+ 
+ #ifndef CONFFILE
+ #define CONFFILE "/etc/mdadm.conf"
+diff --git a/mdmon.c b/mdmon.c
+index ee12b7c..e4b73d9 100644
+--- a/mdmon.c
++++ b/mdmon.c
+@@ -235,7 +235,7 @@ static int make_control_sock(char *devname)
+ 	addr.sun_family = PF_LOCAL;
+ 	strcpy(addr.sun_path, path);
+ 	umask(077); /* ensure no world write access */
+-	if (bind(sfd, &addr, sizeof(addr)) < 0) {
++	if (bind(sfd, (struct sockaddr*)&addr, sizeof(addr)) < 0) {
+ 		close(sfd);
+ 		return -1;
+ 	}
+diff --git a/msg.c b/msg.c
+index 754630b..45cd450 100644
+--- a/msg.c
++++ b/msg.c
+@@ -170,7 +170,7 @@ int connect_monitor(char *devname)
+ 
+ 	addr.sun_family = PF_LOCAL;
+ 	strcpy(addr.sun_path, path);
+-	if (connect(sfd, &addr, sizeof(addr)) < 0) {
++	if (connect(sfd, (struct sockaddr*)&addr, sizeof(addr)) < 0) {
+ 		close(sfd);
+ 		return -1;
+ 	}
+-- 
+2.7.0
+

meta/recipes-extended/mdadm/mdadm_3.3.4.bb

@@ -14,13 +14,13 @@ SRC_URI = "${KERNELORG_MIRROR}/linux/utils/raid/mdadm/${BPN}-${PV}.tar.xz \
            file://mdadm-3.3.2_x32_abi_time_t.patch \
            file://0001-Fix-typo-in-comparision.patch \
            file://mdadm-fix-ptest-build-errors.patch \
+           file://0001-Define-_POSIX_C_SOURCE-if-undefined.patch \
            file://run-ptest \
 	  "
 SRC_URI[md5sum] = "7ca8b114710f98f53f20c5787b674a09"
 SRC_URI[sha256sum] = "8ae5f45306b873190e91f410709b00e51997b633c072b33f8efd9f7df022ca68"
 
 CFLAGS += "-fno-strict-aliasing"
-
 inherit autotools-brokensep
 
 EXTRA_OEMAKE = 'CHECK_RUN_DIR=0 CXFLAGS="${CFLAGS}"'