ssize_t

       MongoDB, Inc

       2009-present, MongoDB, Inc.

1.30.4                                            Jun 08, 2025                      MONGOC_GRIDFS_FILE_WRITEV(3)

       Performs a gathered write to the underlying gridfs file.

       The timeout_msec parameter is unused.

       Modifying  GridFS  files is NOT thread-safe. Only one thread or process can access a GridFS file while it
       is being modified.

       • file: A mongoc_gridfs_file_t.

       • iov: An array of mongoc_iovec_t.

       • iovcnt: The number of elements in iov.

       • timeout_msec: Unused.

       Returns the number of bytes written, or -1 on failure. Use mongoc_gridfs_file_error() to  retrieve  error
       details.

          ssize_t
          mongoc_gridfs_file_writev (mongoc_gridfs_file_t *file,
                                     const mongoc_iovec_t *iov,
                                     size_t iovcnt,
                                     uint32_t timeout_msec);