MDEV-28243: AIX missing my_gethwaddr implementation

and failing spider partition test.

With some small datatype changes to the Linux/Solaris my_gethwaddr implementation
the hardware address of AIX can be returned. This is an important aspect
in Spider (and UUID).

Spider test change reviewed by Nayuta Yanagisawa.

my_gethwaddr review by Monty in #2081

mysys/my_gethwaddr.c

@@ -23,7 +23,7 @@
 
 #ifndef MAIN
 
-#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__linux__) || defined(__sun) || defined(_WIN32)
+#if defined(_AIX) || defined(__APPLE__) || defined(__FreeBSD__) || defined(__linux__) || defined(__sun) || defined(_WIN32)
 static my_bool memcpy_and_test(uchar *to, uchar *from, uint len)
 {
   uint i, res= 1;
@@ -74,7 +74,7 @@ my_bool my_gethwaddr(uchar *to)
   return res;
 }
 
-#elif defined(__linux__) || defined(__sun)
+#elif defined(_AIX) || defined(__linux__) || defined(__sun)
 #include <net/if.h>
 #include <sys/ioctl.h>
 #include <net/if_arp.h>
@@ -87,11 +87,15 @@ my_bool my_gethwaddr(uchar *to)
 my_bool my_gethwaddr(uchar *to)
 {
   int fd, res= 1;
+#ifdef _AIX
+  struct ifhwaddr_req ifr[32];
+#else
   struct ifreq ifr[32];
+#endif
   struct ifconf ifc;
   DBUG_ENTER("my_gethwaddr");
 
-  ifc.ifc_req= ifr;
+  ifc.ifc_req= (struct ifreq *) ifr;
   ifc.ifc_len= sizeof(ifr);
 
   fd = socket(AF_INET, SOCK_DGRAM, 0);
@@ -106,9 +110,14 @@ my_bool my_gethwaddr(uchar *to)
     uint i;
     for (i= 0; res && i < ifc.ifc_len / sizeof(ifr[0]); i++)
     {
-#ifdef __linux__
+#if !defined(_AIX) || !defined(__linux__)
+#if defined(__linux___)
+#define HWADDR_DATA ifr[i].ifr_hwaddr.sa_data
+#else
+#define HWADDR_DATA ifr[i].ifr_hwaddr
+#endif
       if (ioctl(fd, SIOCGIFHWADDR, &ifr[i]) >= 0)
-        res= memcpy_and_test(to, (uchar *)&ifr[i].ifr_hwaddr.sa_data,
+        res= memcpy_and_test(to, (uchar *)&HWADDR_DATA,
                              ETHER_ADDR_LEN);
 #else
       /*

storage/spider/mysql-test/spider/t/partition_mrr.test

@@ -179,21 +179,21 @@ if ($USE_CHILD_GROUP2)
   --connection child2_1
   if ($USE_GENERAL_LOG)
   {
---replace_regex /tmp_spider_bka_0x[0-9a-f]*/tmp_spider_bka_xxxx/
+--replace_regex /tmp_spider_bka_(0x)?[0-9a-f]*/tmp_spider_bka_xxxx/
     eval $CHILD2_1_SELECT_ARGUMENT1;
   }
   eval $CHILD2_1_SELECT_TABLES;
   --connection child2_2
   if ($USE_GENERAL_LOG)
   {
---replace_regex /tmp_spider_bka_0x[0-9a-f]*/tmp_spider_bka_xxxx/
+--replace_regex /tmp_spider_bka_(0x)?[0-9a-f]*/tmp_spider_bka_xxxx/
     eval $CHILD2_2_SELECT_ARGUMENT1;
   }
   eval $CHILD2_2_SELECT_TABLES;
   --connection child2_3
   if ($USE_GENERAL_LOG)
   {
---replace_regex /tmp_spider_bka_0x[0-9a-f]*/tmp_spider_bka_xxxx/
+--replace_regex /tmp_spider_bka_(0x)?[0-9a-f]*/tmp_spider_bka_xxxx/
     eval $CHILD2_3_SELECT_ARGUMENT1;
   }
   eval $CHILD2_3_SELECT_TABLES;