1 /* $NetBSD: netbsd32_rndpseudo_50.c,v 1.5 2020/04/30 03:30:10 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 1997-2011 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Michael Graff <explorer@flame.org> and Thor Lancelot Simon. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: netbsd32_rndpseudo_50.c,v 1.5 2020/04/30 03:30:10 riastradh Exp $"); 34 35 #if defined(_KERNEL_OPT) 36 #include "opt_compat_netbsd.h" 37 #include "opt_compat_netbsd32.h" 38 #endif 39 40 #include <sys/param.h> 41 #include <sys/file.h> 42 43 #include <compat/netbsd32/netbsd32.h> 44 #include <compat/sys/rnd.h> 45 46 /* 47 * Convert from rndsource_t to rndsource50_t, for the results from 48 * RNDGETNUM50 and RNDGETNAME50. 49 */ 50 51 /* 52 * Convert from rndsource_t to rndsource50_32_t, for the results from 53 * RNDGETNUM50_32 and RNDGETNAME50_32. 54 */ 55 static void 56 rndsource_to_rndsource50_32(rndsource_t *r, rndsource50_32_t *r50_32) 57 { 58 memset(r50_32, 0, sizeof(*r50_32)); 59 strlcpy(r50_32->name, r->name, sizeof(r50_32->name)); 60 r50_32->total = r->total; 61 r50_32->type = r->type; 62 r50_32->flags = r->flags; 63 } 64 65 /* 66 * COMPAT32_50 handling for rnd_ioctl. This is called from rnd_ioctl. 67 * 68 * It also handles the case of (COMPAT_50 && COMPAT_NETBSD32). 69 */ 70 int 71 compat32_50_rnd_ioctl(struct file *fp, u_long cmd, void *addr) 72 { 73 int ret = 0; 74 75 switch (cmd) { 76 case RNDGETSRCNUM50_32: 77 { 78 rndstat_t rstbuf = {.start = 0}; 79 rndstat50_32_t *rst50_32 = (rndstat50_32_t *)addr; 80 size_t count; 81 82 if (rst50_32->count > RND_MAXSTATCOUNT50) 83 return (EINVAL); 84 85 rstbuf.start = rst50_32->start; 86 rstbuf.count = rst50_32->count; 87 88 ret = (fp->f_ops->fo_ioctl)(fp, RNDGETSRCNUM, &rstbuf); 89 if (ret != 0) 90 return ret; 91 92 for (count = 0; count < rst50_32->count; count++) { 93 rndsource_to_rndsource50_32(&rstbuf.source[count], 94 &rst50_32->source[count]); 95 } 96 rst50_32->count = rstbuf.count; 97 98 break; 99 } 100 101 case RNDGETSRCNAME50_32: 102 { 103 rndstat_name_t rstnmbuf = {.name[0] = 0}; 104 rndstat_name50_32_t *rstnm50_32; 105 rstnm50_32 = (rndstat_name50_32_t *)addr; 106 107 strlcpy(rstnmbuf.name, rstnm50_32->name, sizeof(rstnmbuf.name)); 108 109 ret = (fp->f_ops->fo_ioctl)(fp, RNDGETSRCNAME, &rstnmbuf); 110 if (ret != 0) 111 return ret; 112 113 rndsource_to_rndsource50_32(&rstnmbuf.source, 114 &rstnm50_32->source); 115 116 break; 117 } 118 119 default: 120 return ENOTTY; 121 } 122 123 return ret; 124 } 125