1 /* $NetBSD: bio_30.c,v 1.5 2020/12/19 22:10:56 thorpej Exp $ */ 2 /* $OpenBSD: bio.c,v 1.9 2007/03/20 02:35:55 marco Exp $ */ 3 4 /* 5 * Copyright (c) 2002 Niklas Hallqvist. All rights reserved. 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 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __KERNEL_RCSID(0, "$NetBSD: bio_30.c,v 1.5 2020/12/19 22:10:56 thorpej Exp $"); 30 31 #if defined(_KERNEL_OPT) 32 #include "opt_compat_netbsd.h" 33 #endif 34 35 #include <sys/param.h> 36 #include <sys/conf.h> 37 #include <sys/device.h> 38 #include <sys/event.h> 39 #include <sys/ioctl.h> 40 #include <sys/kmem.h> 41 #include <sys/queue.h> 42 #include <sys/systm.h> 43 #include <sys/mutex.h> 44 #include <sys/proc.h> 45 #include <sys/kauth.h> 46 #include <sys/compat_stub.h> 47 48 #include <dev/biovar.h> 49 #include <dev/sysmon/sysmonvar.h> 50 51 #include <compat/common/compat_mod.h> 52 53 static int 54 compat_30_bio(void *cookie, u_long cmd, void *addr, 55 int (*delegate)(void *, u_long, void *)) 56 { 57 int error; 58 59 switch (cmd) { 60 case OBIOCDISK: { 61 struct bioc_disk *bd = kmem_zalloc(sizeof(*bd), KM_SLEEP); 62 63 (void)memcpy(bd, addr, sizeof(struct obioc_disk)); 64 error = (*delegate)(cookie, BIOCDISK, bd); 65 if (error) { 66 kmem_free(bd, sizeof(*bd)); 67 return error; 68 } 69 70 (void)memcpy(addr, bd, sizeof(struct obioc_disk)); 71 kmem_free(bd, sizeof(*bd)); 72 return 0; 73 } 74 case OBIOCVOL: { 75 struct bioc_vol *bv = kmem_zalloc(sizeof(*bv), KM_SLEEP); 76 77 (void)memcpy(bv, addr, sizeof(struct obioc_vol)); 78 error = (*delegate)(cookie, BIOCVOL, bv); 79 if (error) { 80 kmem_free(bv, sizeof(*bv)); 81 return error; 82 } 83 84 (void)memcpy(addr, bv, sizeof(struct obioc_vol)); 85 kmem_free(bv, sizeof(*bv)); 86 return 0; 87 } 88 default: 89 return ENOSYS; 90 } 91 } 92 93 void 94 bio_30_init(void) 95 { 96 97 MODULE_HOOK_SET(compat_bio_30_hook, compat_30_bio); 98 } 99 100 void 101 bio_30_fini(void) 102 { 103 104 MODULE_HOOK_UNSET(compat_bio_30_hook); 105 } 106