dosfs: Add sync_device option for msdos_format()

cpukit/libfs/src/dosfs/dosfs.h

@@ -94,6 +94,11 @@ typedef struct {
    */
   bool skip_alignment;
 
+  /**
+   * @brief Synchronize device after write operations.
+   */
+  bool sync_device;
+
   /**
    * @brief The amount of info to output.
    */

cpukit/libfs/src/dosfs/msdos_format.c

@@ -1251,6 +1251,11 @@ int msdos_format
          tmp_sec);
     }
   }
+
+  if (ret_val == 0 && rqdata != NULL && rqdata->sync_device) {
+    ret_val = rtems_disk_fd_sync(fd);
+  }
+
   /*
    * cleanup:
    * sync and unlock disk

testsuites/fstests/fsdosfssync01/init.c

@@ -89,6 +89,11 @@ static void check_file_size(const char *file, off_t size)
 
 static void test(const char *rda, const char *mnt, const char *file)
 {
+  static const msdos_format_request_param_t rqdata = {
+    .quick_format = true,
+    .sync_device = true
+  };
+
   rtems_status_code sc;
   int disk_fd;
   int rv;
@@ -99,7 +104,7 @@ static void test(const char *rda, const char *mnt, const char *file)
   disk_fd = open(rda, O_RDWR);
   rtems_test_assert(disk_fd >= 0);
 
-  rv = msdos_format(rda, NULL);
+  rv = msdos_format(rda, &rqdata);
   rtems_test_assert(rv == 0);
 
   rv = mount_and_make_target_path(