1 /* $FreeBSD$ */ 2 /*- 3 * Copyright (c) 2014 Hans Petter Selasky. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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. 13 * 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 24 * SUCH DAMAGE. 25 */ 26 27 #ifndef _CUSE_H_ 28 #define _CUSE_H_ 29 30 #ifdef __cplusplus 31 extern "C" { 32 #endif 33 34 #include <fs/cuse/cuse_defs.h> 35 36 struct cuse_dev; 37 38 typedef int (cuse_open_t)(struct cuse_dev *, int fflags); 39 typedef int (cuse_close_t)(struct cuse_dev *, int fflags); 40 typedef int (cuse_read_t)(struct cuse_dev *, int fflags, void *user_ptr, int len); 41 typedef int (cuse_write_t)(struct cuse_dev *, int fflags, const void *user_ptr, int len); 42 typedef int (cuse_ioctl_t)(struct cuse_dev *, int fflags, unsigned long cmd, void *user_data); 43 typedef int (cuse_poll_t)(struct cuse_dev *, int fflags, int events); 44 45 struct cuse_methods { 46 cuse_open_t *cm_open; 47 cuse_close_t *cm_close; 48 cuse_read_t *cm_read; 49 cuse_write_t *cm_write; 50 cuse_ioctl_t *cm_ioctl; 51 cuse_poll_t *cm_poll; 52 }; 53 54 int cuse_init(void); 55 int cuse_uninit(void); 56 57 void *cuse_vmalloc(unsigned); 58 int cuse_is_vmalloc_addr(void *); 59 void cuse_vmfree(void *); 60 unsigned long cuse_vmoffset(void *ptr); 61 62 int cuse_alloc_unit_number_by_id(int *, int); 63 int cuse_free_unit_number_by_id(int, int); 64 int cuse_alloc_unit_number(int *); 65 int cuse_free_unit_number(int); 66 67 struct cuse_dev *cuse_dev_create(const struct cuse_methods *, void *, void *, uid_t, gid_t, int, const char *,...); 68 void cuse_dev_destroy(struct cuse_dev *); 69 70 void *cuse_dev_get_priv0(struct cuse_dev *); 71 void *cuse_dev_get_priv1(struct cuse_dev *); 72 73 void cuse_dev_set_priv0(struct cuse_dev *, void *); 74 void cuse_dev_set_priv1(struct cuse_dev *, void *); 75 76 void cuse_set_local(int); 77 int cuse_get_local(void); 78 79 int cuse_wait_and_process(void); 80 81 void cuse_dev_set_per_file_handle(struct cuse_dev *, void *); 82 void *cuse_dev_get_per_file_handle(struct cuse_dev *); 83 84 int cuse_copy_out(const void *src, void *user_dst, int len); 85 int cuse_copy_in(const void *user_src, void *dst, int len); 86 int cuse_got_peer_signal(void); 87 void cuse_poll_wakeup(void); 88 89 struct cuse_dev *cuse_dev_get_current(int *); 90 91 extern int cuse_debug_level; 92 93 #ifdef __cplusplus 94 } 95 #endif 96 97 #endif /* _CUSE_H_ */ 98