🐞 fix(components/dfs/src/dfs_posix.c): use stat to implement fstat

Author: xqyjlj

components/dfs/src/dfs_posix.c

@@ -353,21 +353,7 @@ int fstat(int fildes, struct stat *buf)
         return -1;
     }
 
-    /* it's the root directory */
-    buf->st_dev = 0;
-
-    buf->st_mode = S_IFREG | S_IRUSR | S_IRGRP | S_IROTH |
-                   S_IWUSR | S_IWGRP | S_IWOTH;
-    if (d->vnode->type == FT_DIRECTORY)
-    {
-        buf->st_mode &= ~S_IFREG;
-        buf->st_mode |= S_IFDIR | S_IXUSR | S_IXGRP | S_IXOTH;
-    }
-
-    buf->st_size    = d->vnode->size;
-    buf->st_mtime   = 0;
-
-    return RT_EOK;
+    return stat(d->vnode->fullpath, buf);
 }
 RTM_EXPORT(fstat);