1 /* 2 * Copyright (c) 2004, 2005 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Simon 'corecode' Schubert <corecode@fs.ei.tum.de>. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 3. Neither the name of The DragonFly Project nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific, prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * $DragonFly: src/sys/sys/mapped_ioctl.h,v 1.2 2005/03/01 00:43:02 corecode Exp $ 35 */ 36 #ifndef _SYS_MAPPED_IOCTL_H_ 37 #define _SYS_MAPPED_IOCTL_H_ 38 39 #include <sys/queue.h> 40 41 struct file; 42 struct thread; 43 struct ioctl_map_entry; 44 45 typedef int (ioctl_wrap_func)(struct file *, u_long, u_long, caddr_t, 46 struct thread *); 47 typedef u_long (ioctl_map_func)(u_long, u_long, u_long, u_long, u_long, u_long); 48 49 struct ioctl_map_range { 50 u_long start; /* Start of source range; inclusive */ 51 u_long end; /* End of source range; inclusive */ 52 u_long maptocmd; /* Start of destination range */ 53 u_long maptoend; /* End of destination range */ 54 ioctl_wrap_func *wrapfunc; /* Ioctl handler to use */ 55 ioctl_map_func *mapfunc; /* Handler to map source to dest */ 56 }; 57 58 #define MAPPED_IOCTL_MAPRANGE(c,e,t,r,f,m) { (c), (e), (t), (r), (f), (m) } 59 #define MAPPED_IOCTL_MAPF(c,t,f) MAPPED_IOCTL_MAPRANGE((c), (c), (t), (t), (f), NULL) 60 #define MAPPED_IOCTL_MAP(c,t) MAPPED_IOCTL_MAPF((c), (t), NULL) 61 #define MAPPED_IOCTL_IO(c,f) MAPPED_IOCTL_MAPF((c), _IO(0, 0), (f)) 62 #define MAPPED_IOCTL_IOR(c,f,t) MAPPED_IOCTL_MAPF((c), _IOR(0, 0, t), (f)) 63 #define MAPPED_IOCTL_IOW(c,f,t) MAPPED_IOCTL_MAPF((c), _IOW(0, 0, t), (f)) 64 #define MAPPED_IOCTL_IOWR(c,f,t) MAPPED_IOCTL_MAPF((c), _IOWR(0, 0, t), (f)) 65 66 struct ioctl_map { 67 u_long mask; 68 const char *sys; 69 LIST_HEAD(, ioctl_map_entry) mapping; 70 }; 71 72 struct ioctl_map_handler { 73 struct ioctl_map *map; 74 const char *subsys; 75 struct ioctl_map_range *cmd_ranges; 76 }; 77 78 int mapped_ioctl(int fd, u_long com, caddr_t uspc_data, struct ioctl_map *map); 79 int mapped_ioctl_register_handler(struct ioctl_map_handler *he); 80 int mapped_ioctl_unregister_handler(struct ioctl_map_handler *he); 81 82 #endif /* !_SYS_MAPPED_IOCTL_H_ */ 83