Fix for BUG#46591 - .frm file isn't sync'd with sync_frm enabled for

                    CREATE TABLE...LIKE...
      
The mysql server option 'sync_frm' is ignored when table is created with 
syntax CREATE TABLE .. LIKE.. 
      
Fixed by adding the MY_SYNC flag and calling my_sync() from my_copy() when
the flag is set.

In mysql_create_table(), when the 'sync_frm' is set, MY_SYNC flag is passed 
to my_copy(). 
      
Note: TestCase is not attached and can be tested manually using debugger.

client/Makefile.am:
  BUG#46591 - .frm file isn't sync'd with sync_frm enabled for 
              CREATE TABLE...LIKE...
      
  add my_sync to sources as it is used in my_copy() method
include/my_sys.h:
  BUG#46591 - .frm file isn't sync'd with sync_frm enabled for 
              CREATE TABLE...LIKE...
      
  MY_SYNC flag is added to call my_sync() method
mysys/my_copy.c:
  BUG#46591 - .frm file isn't sync'd with sync_frm enabled for 
              CREATE TABLE...LIKE...
      
  my_sync() is method is called when MY_SYNC is set in my_copy()
sql/sql_table.cc:
  BUG#46591 - .frm file isn't sync'd with sync_frm enabled for 
              CREATE TABLE...LIKE...
      
  Fixed mysql_create_like_table() to call my_sync() when opt_sync_frm variable
  is set

client/Makefile.am

@@ -35,6 +35,7 @@ mysql_LDADD =			@readline_link@ @TERMCAP_LIB@ $(LDADD) $(CXXLDFLAGS)
 mysqltest_SOURCES=              mysqltest.c \
 				$(top_srcdir)/mysys/my_getsystime.c \
 				$(top_srcdir)/mysys/my_copy.c \
+				$(top_srcdir)/mysys/my_sync.c \
 				$(top_srcdir)/mysys/my_mkdir.c
 
 mysqltest_LDADD =		$(top_builddir)/regex/libregex.a $(LDADD)

include/my_sys.h

@@ -68,6 +68,7 @@ extern int NEAR my_errno;		/* Last error in mysys */
 #define MY_HOLD_ON_ERROR 256	/* my_realloc() ; Return old ptr on error */
 #define MY_DONT_OVERWRITE_FILE 1024	/* my_copy: Don't overwrite file */
 #define MY_THREADSAFE 2048      /* my_seek(): lock fd mutex */
+#define MY_SYNC       4096      /* my_copy(): sync dst file */
 
 #define MY_CHECK_ERROR	1	/* Params to my_end; Check open-close */
 #define MY_GIVE_INFO	2	/* Give time info about process*/

mysys/my_copy.c

@@ -87,6 +87,13 @@ int my_copy(const char *from, const char *to, myf MyFlags)
 	    my_write(to_file,buff,Count,MYF(MyFlags | MY_NABP)))
 	goto err;
 
+    /* sync the destination file */
+    if (MyFlags & MY_SYNC)
+    {
+      if (my_sync(to_file, MyFlags))
+        goto err;
+    }
+
     if (my_close(from_file,MyFlags) | my_close(to_file,MyFlags))
       DBUG_RETURN(-1);				/* Error on close */
 

sql/sql_table.cc

@@ -2773,6 +2773,7 @@ bool mysql_create_like_table(THD* thd, TABLE_LIST* table, TABLE_LIST *src_table,
   int  err;
   bool res= TRUE;
   db_type not_used;
+  myf flags= MY_DONT_OVERWRITE_FILE;
   DBUG_ENTER("mysql_create_like_table");
 
   /*
@@ -2859,10 +2860,14 @@ bool mysql_create_like_table(THD* thd, TABLE_LIST* table, TABLE_LIST *src_table,
 
   DBUG_EXECUTE_IF("sleep_create_like_before_copy", my_sleep(6000000););
 
+  if (opt_sync_frm && !(create_info->options & HA_LEX_CREATE_TMP_TABLE))
+    flags|= MY_SYNC;
+
   /*
     Create a new table by copying from source table
+    and sync the new table if the flag MY_SYNC is set
   */
-  if (my_copy(src_path, dst_path, MYF(MY_DONT_OVERWRITE_FILE)))
+  if (my_copy(src_path, dst_path, flags))
   {
     if (my_errno == ENOENT)
       my_error(ER_BAD_DB_ERROR,MYF(0),db);