1 /* $NetBSD: linux_blkio.c,v 1.5 2001/11/13 02:08:48 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 2001 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Frank van der Linden for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 #include <sys/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: linux_blkio.c,v 1.5 2001/11/13 02:08:48 lukem Exp $"); 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/ioctl.h> 44 #include <sys/file.h> 45 #include <sys/filedesc.h> 46 #include <sys/mount.h> 47 #include <sys/proc.h> 48 #include <sys/disklabel.h> 49 50 #include <sys/syscallargs.h> 51 52 #include <compat/linux/common/linux_types.h> 53 #include <compat/linux/common/linux_ioctl.h> 54 #include <compat/linux/common/linux_signal.h> 55 #include <compat/linux/common/linux_util.h> 56 #include <compat/linux/common/linux_blkio.h> 57 58 #include <compat/linux/linux_syscallargs.h> 59 60 int 61 linux_ioctl_blkio(struct proc *p, struct linux_sys_ioctl_args *uap, 62 register_t *retval) 63 { 64 u_long com; 65 long size; 66 int error; 67 struct filedesc *fdp; 68 struct file *fp; 69 int (*ioctlf) __P((struct file *, u_long, caddr_t, struct proc *)); 70 struct partinfo partp; 71 struct disklabel label; 72 73 fdp = p->p_fd; 74 if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL) 75 return (EBADF); 76 77 FILE_USE(fp); 78 error = 0; 79 ioctlf = fp->f_ops->fo_ioctl; 80 com = SCARG(uap, com); 81 82 switch (com) { 83 case LINUX_BLKGETSIZE: 84 /* 85 * Try to get the partition size of this device. If that 86 * fails, it may be a disk without label; try to get 87 * the default label and compute the size from it. 88 */ 89 error = ioctlf(fp, DIOCGPART, (caddr_t)&partp, p); 90 if (error != 0) { 91 error = ioctlf(fp, DIOCGDEFLABEL, (caddr_t)&label, p); 92 if (error != 0) 93 break; 94 size = label.d_nsectors * label.d_ntracks * 95 label.d_ncylinders; 96 } else 97 size = partp.part->p_size; 98 error = copyout(&size, SCARG(uap, data), sizeof size); 99 break; 100 case LINUX_BLKSECTGET: 101 error = ioctlf(fp, DIOCGDEFLABEL, (caddr_t)&label, p); 102 if (error != 0) 103 break; 104 error = copyout(&label.d_secsize, SCARG(uap, data), 105 sizeof label.d_secsize); 106 break; 107 case LINUX_BLKROSET: 108 case LINUX_BLKROGET: 109 case LINUX_BLKRRPART: 110 case LINUX_BLKFLSBUF: 111 case LINUX_BLKRASET: 112 case LINUX_BLKRAGET: 113 case LINUX_BLKFRASET: 114 case LINUX_BLKFRAGET: 115 case LINUX_BLKSECTSET: 116 case LINUX_BLKSSZGET: 117 case LINUX_BLKPG: 118 default: 119 error = ENOTTY; 120 } 121 122 FILE_UNUSE(fp, p); 123 124 return error; 125 } 126