3 * Copyright (c) 2014 Hans Petter Selasky. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #ifndef _CUSE_IOCTL_H_
28 #define _CUSE_IOCTL_H_
30 #include <sys/ioccom.h>
31 #include <sys/types.h>
33 #define CUSE_BUFFER_MAX PAGE_SIZE
34 #define CUSE_DEVICES_MAX 64 /* units */
35 #define CUSE_BUF_MIN_PTR 0x10000UL
36 #define CUSE_BUF_MAX_PTR 0x20000UL
37 #define CUSE_ALLOC_UNIT_MAX 128 /* units */
38 #define CUSE_ALLOC_PAGES_MAX (((16UL * 1024UL * 1024UL) + PAGE_SIZE - 1) / PAGE_SIZE)
42 struct cuse_data_chunk {
43 unsigned long local_ptr;
44 unsigned long peer_ptr;
48 struct cuse_alloc_info {
49 unsigned long page_count;
50 unsigned long alloc_nr;
56 unsigned long per_file_handle;
57 unsigned long data_pointer;
58 unsigned long argument;
59 unsigned long command; /* see CUSE_CMD_XXX */
62 struct cuse_create_dev {
67 char devname[80]; /* /dev/xxxxx */
70 /* Definition of internal IOCTLs for /dev/cuse */
72 #define CUSE_IOCTL_GET_COMMAND _IOR('C', 0, struct cuse_command)
73 #define CUSE_IOCTL_WRITE_DATA _IOW('C', 1, struct cuse_data_chunk)
74 #define CUSE_IOCTL_READ_DATA _IOW('C', 2, struct cuse_data_chunk)
75 #define CUSE_IOCTL_SYNC_COMMAND _IOW('C', 3, int)
76 #define CUSE_IOCTL_GET_SIG _IOR('C', 4, int)
77 #define CUSE_IOCTL_ALLOC_MEMORY _IOW('C', 5, struct cuse_alloc_info)
78 #define CUSE_IOCTL_FREE_MEMORY _IOW('C', 6, struct cuse_alloc_info)
79 #define CUSE_IOCTL_SET_PFH _IOW('C', 7, unsigned long)
80 #define CUSE_IOCTL_CREATE_DEV _IOW('C', 8, struct cuse_create_dev)
81 #define CUSE_IOCTL_DESTROY_DEV _IOW('C', 9, struct cuse_dev *)
82 #define CUSE_IOCTL_ALLOC_UNIT _IOR('C',10, int)
83 #define CUSE_IOCTL_FREE_UNIT _IOW('C',11, int)
84 #define CUSE_IOCTL_SELWAKEUP _IOW('C',12, int)
85 #define CUSE_IOCTL_ALLOC_UNIT_BY_ID _IOWR('C',13, int)
86 #define CUSE_IOCTL_FREE_UNIT_BY_ID _IOWR('C',14, int)
88 #endif /* _CUSE_IOCTL_H_ */