freebsd-dev/sys/fs/cuse/cuse_defs.h
Hans Petter Selasky db92a6cd51 Implement flag for telling cuse(3) clients if the peer is running in 32-bit
compat mode or not. This is useful when implementing compatibility ioctl(2)
handlers in userspace.

MFC after:		1 week
Sponsored by:		Mellanox Technologies
2019-04-18 19:04:07 +00:00

89 lines
2.9 KiB
C

/* $FreeBSD$ */
/*-
* Copyright (c) 2010-2012 Hans Petter Selasky. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _CUSE_DEFS_H_
#define _CUSE_DEFS_H_
#define CUSE_VERSION 0x000124
#define CUSE_ERR_NONE 0
#define CUSE_ERR_BUSY -1
#define CUSE_ERR_WOULDBLOCK -2
#define CUSE_ERR_INVALID -3
#define CUSE_ERR_NO_MEMORY -4
#define CUSE_ERR_FAULT -5
#define CUSE_ERR_SIGNAL -6
#define CUSE_ERR_OTHER -7
#define CUSE_ERR_NOT_LOADED -8
#define CUSE_ERR_NO_DEVICE -9
#define CUSE_POLL_NONE 0
#define CUSE_POLL_READ 1
#define CUSE_POLL_WRITE 2
#define CUSE_POLL_ERROR 4
#define CUSE_FFLAG_NONE 0
#define CUSE_FFLAG_READ 1
#define CUSE_FFLAG_WRITE 2
#define CUSE_FFLAG_NONBLOCK 4
#define CUSE_FFLAG_COMPAT32 8 /* peer is running in 32-bit compat mode */
#define CUSE_DBG_NONE 0
#define CUSE_DBG_FULL 1
/* maximum data transfer length */
#define CUSE_LENGTH_MAX 0x7FFFFFFFU
enum {
CUSE_CMD_NONE,
CUSE_CMD_OPEN,
CUSE_CMD_CLOSE,
CUSE_CMD_READ,
CUSE_CMD_WRITE,
CUSE_CMD_IOCTL,
CUSE_CMD_POLL,
CUSE_CMD_SIGNAL,
CUSE_CMD_SYNC,
CUSE_CMD_MAX,
};
#define CUSE_MAKE_ID(a,b,c,u) ((((a) & 0x7F) << 24)| \
(((b) & 0xFF) << 16)|(((c) & 0xFF) << 8)|((u) & 0xFF))
#define CUSE_ID_MASK 0x7FFFFF00U
/*
* The following ID's are defined:
* ===============================
*/
#define CUSE_ID_DEFAULT(what) CUSE_MAKE_ID(0,0,what,0)
#define CUSE_ID_WEBCAMD(what) CUSE_MAKE_ID('W','C',what,0) /* Used by Webcamd. */
#define CUSE_ID_SUNDTEK(what) CUSE_MAKE_ID('S','K',what,0) /* Used by Sundtek. */
#define CUSE_ID_CX88(what) CUSE_MAKE_ID('C','X',what,0) /* Used by cx88 driver. */
#define CUSE_ID_UHIDD(what) CUSE_MAKE_ID('U','D',what,0) /* Used by uhidd. */
#endif /* _CUSE_DEFS_H_ */