innodb: os_file_create_tmpfile always called with NULL -> simplify

storage/innobase/dict/dict0dict.cc

@@ -1109,7 +1109,7 @@ dict_init(void)
 		       dict_operation_lock, SYNC_DICT_OPERATION);
 
 	if (!srv_read_only_mode) {
-		dict_foreign_err_file = os_file_create_tmpfile(NULL);
+		dict_foreign_err_file = os_file_create_tmpfile();
 		ut_a(dict_foreign_err_file);
 	}
 

storage/innobase/include/os0file.h

@@ -535,14 +535,11 @@ struct os_file_stat_t {
 };
 
 /** Create a temporary file. This function is like tmpfile(3), but
-the temporary file is created in the given parameter path. If the path
-is null then it will create the file in the mysql server configuration
+the temporary file is created in the in the mysql server configuration
 parameter (--tmpdir).
-@param[in]	path	location for creating temporary file
 @return temporary file handle, or NULL on error */
 FILE*
-os_file_create_tmpfile(
-	const char*	path);
+os_file_create_tmpfile();
 
 /** The os_file_opendir() function opens a directory stream corresponding to the
 directory named by the dirname argument. The directory stream is positioned

storage/innobase/lock/lock0lock.cc

@@ -496,7 +496,7 @@ void lock_sys_t::create(ulint n_cells)
 	prdt_page_hash = hash_create(n_cells);
 
 	if (!srv_read_only_mode) {
-		lock_latest_err_file = os_file_create_tmpfile(NULL);
+		lock_latest_err_file = os_file_create_tmpfile();
 		ut_a(lock_latest_err_file);
 	}
 }

storage/innobase/os/os0file.cc

@@ -1215,19 +1215,16 @@ AIO::release_with_mutex(Slot* slot)
 	release();
 }
 
-/** Creates a temporary file.  This function is like tmpfile(3), but
-the temporary file is created in the given parameter path. If the path
-is NULL then it will create the file in the MySQL server configuration
+/** Create a temporary file. This function is like tmpfile(3), but
+the temporary file is created in the in the mysql server configuration
 parameter (--tmpdir).
-@param[in]	path	location for creating temporary file
-@@return temporary file handle, or NULL on error */
+@return temporary file handle, or NULL on error */
 FILE*
-os_file_create_tmpfile(
-	const char*	path)
+os_file_create_tmpfile()
 {
 	FILE*	file	= NULL;
 	WAIT_ALLOW_WRITES();
-	int	fd	= innobase_mysql_tmpfile(path);
+	int	fd	= innobase_mysql_tmpfile(NULL);
 
 	if (fd >= 0) {
 		file = fdopen(fd, "w+b");

storage/innobase/srv/srv0start.cc

@@ -1754,7 +1754,7 @@ innobase_start_or_create_for_mysql()
 		} else {
 
 			srv_monitor_file_name = NULL;
-			srv_monitor_file = os_file_create_tmpfile(NULL);
+			srv_monitor_file = os_file_create_tmpfile();
 
 			if (!srv_monitor_file && err == DB_SUCCESS) {
 				err = DB_ERROR;
@@ -1764,7 +1764,7 @@ innobase_start_or_create_for_mysql()
 		mutex_create(LATCH_ID_SRV_MISC_TMPFILE,
 			     &srv_misc_tmpfile_mutex);
 
-		srv_misc_tmpfile = os_file_create_tmpfile(NULL);
+		srv_misc_tmpfile = os_file_create_tmpfile();
 
 		if (!srv_misc_tmpfile && err == DB_SUCCESS) {
 			err = DB_ERROR;