arch/um/drivers/ubd.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
   4  * Copyright (C) 2001 RidgeRun, Inc (glonnon@ridgerun.com)
   5  */
   6
   7 #ifndef __UM_UBD_USER_H
   8 #define __UM_UBD_USER_H
   9
  10 extern int start_io_thread(unsigned long sp, int *fds_out);
  11 extern int io_thread(void *arg);
  12 extern int kernel_fd;
  13
  14 extern int ubd_read_poll(int timeout);
  15 extern int ubd_write_poll(int timeout);
  16
  17 #define UBD_REQ_BUFFER_SIZE 64
  18
  19 #endif
  20