example/fioc.h

   1 /*
   2   FUSE-ioctl: ioctl support for FUSE
   3   Copyright (C) 2008       SUSE Linux Products GmbH
   4   Copyright (C) 2008       Tejun Heo <teheo@suse.de>
   5
   6   This program can be distributed under the terms of the GNU GPL.
   7   See the file COPYING.
   8 */
   9
  10 /** @file
  11  * @tableofcontents
  12  *
  13  * fioc.h - FUSE-ioctl: ioctl support for FUSE
  14  *
  15  * \include fioc.h
  16  */
  17
  18
  19 #include <sys/types.h>
  20 #include <sys/uio.h>
  21 #include <sys/ioctl.h>
  22
  23 enum {
  24         FIOC_GET_SIZE   = _IOR('E', 0, size_t),
  25         FIOC_SET_SIZE   = _IOW('E', 1, size_t),
  26
  27         /*
  28          * The following two ioctls don't follow usual encoding rules
  29          * and transfer variable amount of data.
  30          */
  31         FIOC_READ       = _IO('E', 2),
  32         FIOC_WRITE      = _IO('E', 3),
  33 };
  34
  35 struct fioc_rw_arg {
  36         off_t           offset;
  37         void            *buf;
  38         size_t          size;
  39         size_t          prev_size;      /* out param for previous total size */
  40         size_t          new_size;       /* out param for new total size */
  41 };