1/*-
2 * Copyright (c) 2014 Hans Petter Selasky. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 */
25
26#ifndef _CUSE_H_
27#define	_CUSE_H_
28
29#ifdef __cplusplus
30extern "C" {
31#endif
32
33#include <fs/cuse/cuse_defs.h>
34
35struct cuse_dev;
36
37typedef int (cuse_open_t)(struct cuse_dev *, int fflags);
38typedef int (cuse_close_t)(struct cuse_dev *, int fflags);
39typedef int (cuse_read_t)(struct cuse_dev *, int fflags, void *user_ptr, int len);
40typedef int (cuse_write_t)(struct cuse_dev *, int fflags, const void *user_ptr, int len);
41typedef int (cuse_ioctl_t)(struct cuse_dev *, int fflags, unsigned long cmd, void *user_data);
42typedef int (cuse_poll_t)(struct cuse_dev *, int fflags, int events);
43
44struct cuse_methods {
45	cuse_open_t *cm_open;
46	cuse_close_t *cm_close;
47	cuse_read_t *cm_read;
48	cuse_write_t *cm_write;
49	cuse_ioctl_t *cm_ioctl;
50	cuse_poll_t *cm_poll;
51};
52
53int	cuse_init(void);
54int	cuse_uninit(void);
55
56void   *cuse_vmalloc(unsigned);
57int	cuse_is_vmalloc_addr(void *);
58void	cuse_vmfree(void *);
59unsigned long cuse_vmoffset(void *ptr);
60
61int	cuse_alloc_unit_number_by_id(int *, int);
62int	cuse_free_unit_number_by_id(int, int);
63int	cuse_alloc_unit_number(int *);
64int	cuse_free_unit_number(int);
65
66struct cuse_dev *cuse_dev_create(const struct cuse_methods *, void *, void *, uid_t, gid_t, int, const char *,...);
67void	cuse_dev_destroy(struct cuse_dev *);
68
69void   *cuse_dev_get_priv0(struct cuse_dev *);
70void   *cuse_dev_get_priv1(struct cuse_dev *);
71
72void	cuse_dev_set_priv0(struct cuse_dev *, void *);
73void	cuse_dev_set_priv1(struct cuse_dev *, void *);
74
75void	cuse_set_local(int);
76int	cuse_get_local(void);
77
78int	cuse_wait_and_process(void);
79
80void	cuse_dev_set_per_file_handle(struct cuse_dev *, void *);
81void   *cuse_dev_get_per_file_handle(struct cuse_dev *);
82
83int	cuse_copy_out(const void *src, void *user_dst, int len);
84int	cuse_copy_in(const void *user_src, void *dst, int len);
85int	cuse_got_peer_signal(void);
86void	cuse_poll_wakeup(void);
87
88struct cuse_dev *cuse_dev_get_current(int *);
89
90extern int cuse_debug_level;
91
92#ifdef __cplusplus
93}
94#endif
95
96#endif			/* _CUSE_H_ */
97