1 /* $NetBSD: bio_30.c,v 1.4 2019/12/12 02:15:42 pgoyette 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 1.4 2019/12/12 02:15:42 pgoyette 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/malloc.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 = 62 malloc(sizeof(*bd), M_DEVBUF, M_WAITOK|M_ZERO); 63 64 (void)memcpy(bd, addr, sizeof(struct obioc_disk)); 65 error = (*delegate)(cookie, BIOCDISK, bd); 66 if (error) { 67 free(bd, M_DEVBUF); 68 return error; 69 } 70 71 (void)memcpy(addr, bd, sizeof(struct obioc_disk)); 72 free(bd, M_DEVBUF); 73 return 0; 74 } 75 case OBIOCVOL: { 76 struct bioc_vol *bv = 77 malloc(sizeof(*bv), M_DEVBUF, M_WAITOK|M_ZERO); 78 79 (void)memcpy(bv, addr, sizeof(struct obioc_vol)); 80 error = (*delegate)(cookie, BIOCVOL, bv); 81 if (error) { 82 free(bv, M_DEVBUF); 83 return error; 84 } 85 86 (void)memcpy(addr, bv, sizeof(struct obioc_vol)); 87 free(bv, M_DEVBUF); 88 return 0; 89 } 90 default: 91 return ENOSYS; 92 } 93 } 94 95 void 96 bio_30_init(void) 97 { 98 99 MODULE_HOOK_SET(compat_bio_30_hook, compat_30_bio); 100 } 101 102 void 103 bio_30_fini(void) 104 { 105 106 MODULE_HOOK_UNSET(compat_bio_30_hook); 107 } 108