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 1.4 2006/05/20 02:42:13 dillon Exp $ 35 */ 36 #ifndef _SYS_MAPPED_IOCTL_H_ 37 #define _SYS_MAPPED_IOCTL_H_ 38 39 #ifndef _SYS_TYPES_H_ 40 #include <sys/types.h> 41 #endif 42 #ifndef _SYS_QUEUE_H_ 43 #include <sys/queue.h> 44 #endif 45 #ifndef _SYS_IOCCOM_H_ 46 #include <sys/ioccom.h> 47 #endif 48 49 struct file; 50 struct thread; 51 struct ucred; 52 struct ioctl_map_entry; 53 54 typedef int (ioctl_wrap_func)(struct file *, u_long, u_long, caddr_t, 55 struct ucred *); 56 typedef u_long (ioctl_map_func)(u_long, u_long, u_long, u_long, u_long, u_long); 57 58 struct ioctl_map_range { 59 u_long start; /* Start of source range; inclusive */ 60 u_long end; /* End of source range; inclusive */ 61 u_long maptocmd; /* Start of destination range */ 62 u_long maptoend; /* End of destination range */ 63 ioctl_wrap_func *wrapfunc; /* Ioctl handler to use */ 64 ioctl_map_func *mapfunc; /* Handler to map source to dest */ 65 }; 66 67 #define MAPPED_IOCTL_MAPRANGE(c,e,t,r,f,m) { (c), (e), (t), (r), (f), (m) } 68 #define MAPPED_IOCTL_MAPF(c,t,f) MAPPED_IOCTL_MAPRANGE((c), (c), (t), (t), (f), NULL) 69 #define MAPPED_IOCTL_MAP(c,t) MAPPED_IOCTL_MAPF((c), (t), NULL) 70 #define MAPPED_IOCTL_IO(c,f) MAPPED_IOCTL_MAPF((c), _IO(0, 0), (f)) 71 #define MAPPED_IOCTL_IOR(c,f,t) MAPPED_IOCTL_MAPF((c), _IOR(0, 0, t), (f)) 72 #define MAPPED_IOCTL_IOW(c,f,t) MAPPED_IOCTL_MAPF((c), _IOW(0, 0, t), (f)) 73 #define MAPPED_IOCTL_IOWR(c,f,t) MAPPED_IOCTL_MAPF((c), _IOWR(0, 0, t), (f)) 74 75 struct ioctl_map { 76 u_long mask; 77 const char *sys; 78 LIST_HEAD(, ioctl_map_entry) mapping; 79 }; 80 81 struct ioctl_map_handler { 82 struct ioctl_map *map; 83 const char *subsys; 84 struct ioctl_map_range *cmd_ranges; 85 }; 86 87 int mapped_ioctl(int fd, u_long com, caddr_t uspc_data, 88 struct ioctl_map *map, struct sysmsg *msg); 89 int mapped_ioctl_register_handler(struct ioctl_map_handler *he); 90 int mapped_ioctl_unregister_handler(struct ioctl_map_handler *he); 91 92 #endif /* !_SYS_MAPPED_IOCTL_H_ */ 93