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/* $FreeBSD$ */
/*-
* Copyright (c) 2014 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_IOCTL_H_
#define _CUSE_IOCTL_H_
#include <sys/ioccom.h>
#include <sys/types.h>
#define CUSE_BUFFER_MAX PAGE_SIZE
#define CUSE_DEVICES_MAX 64 /* units */
#define CUSE_BUF_MIN_PTR 0x10000UL
#define CUSE_BUF_MAX_PTR 0x20000UL
#define CUSE_ALLOC_UNIT_MAX 128 /* units */
#define CUSE_ALLOC_PAGES_MAX (((16UL * 1024UL * 1024UL) + PAGE_SIZE - 1) / PAGE_SIZE)
struct cuse_dev;
struct cuse_data_chunk {
uintptr_t local_ptr;
uintptr_t peer_ptr;
unsigned long length;
};
struct cuse_alloc_info {
unsigned long page_count;
unsigned long alloc_nr;
};
struct cuse_command {
struct cuse_dev *dev;
unsigned long fflags;
uintptr_t per_file_handle;
uintptr_t data_pointer;
unsigned long argument;
unsigned long command; /* see CUSE_CMD_XXX */
};
struct cuse_create_dev {
struct cuse_dev *dev;
uid_t user_id;
gid_t group_id;
int permissions;
char devname[80]; /* /dev/xxxxx */
};
/* Definition of internal IOCTLs for /dev/cuse */
#define CUSE_IOCTL_GET_COMMAND _IOR('C', 0, struct cuse_command)
#define CUSE_IOCTL_WRITE_DATA _IOW('C', 1, struct cuse_data_chunk)
#define CUSE_IOCTL_READ_DATA _IOW('C', 2, struct cuse_data_chunk)
#define CUSE_IOCTL_SYNC_COMMAND _IOW('C', 3, int)
#define CUSE_IOCTL_GET_SIG _IOR('C', 4, int)
#define CUSE_IOCTL_ALLOC_MEMORY _IOW('C', 5, struct cuse_alloc_info)
#define CUSE_IOCTL_FREE_MEMORY _IOW('C', 6, struct cuse_alloc_info)
#define CUSE_IOCTL_SET_PFH _IOW('C', 7, uintptr_t)
#define CUSE_IOCTL_CREATE_DEV _IOW('C', 8, struct cuse_create_dev)
#define CUSE_IOCTL_DESTROY_DEV _IOW('C', 9, struct cuse_dev *)
#define CUSE_IOCTL_ALLOC_UNIT _IOR('C',10, int)
#define CUSE_IOCTL_FREE_UNIT _IOW('C',11, int)
#define CUSE_IOCTL_SELWAKEUP _IOW('C',12, int)
#define CUSE_IOCTL_ALLOC_UNIT_BY_ID _IOWR('C',13, int)
#define CUSE_IOCTL_FREE_UNIT_BY_ID _IOWR('C',14, int)
#endif /* _CUSE_IOCTL_H_ */
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