1 /* $NetBSD: linux_blkio.c,v 1.3 2001/01/18 17:48:04 tv 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/param.h> 39 #include <sys/systm.h> 40 #include <sys/ioctl.h> 41 #include <sys/file.h> 42 #include <sys/filedesc.h> 43 #include <sys/mount.h> 44 #include <sys/proc.h> 45 #include <sys/disklabel.h> 46 47 #include <sys/syscallargs.h> 48 49 #include <compat/linux/common/linux_types.h> 50 #include <compat/linux/common/linux_ioctl.h> 51 #include <compat/linux/common/linux_signal.h> 52 #include <compat/linux/common/linux_util.h> 53 #include <compat/linux/common/linux_blkio.h> 54 55 #include <compat/linux/linux_syscallargs.h> 56 57 int 58 linux_ioctl_blkio(struct proc *p, struct linux_sys_ioctl_args *uap, 59 register_t *retval) 60 { 61 u_long com; 62 long size; 63 int error; 64 struct filedesc *fdp; 65 struct file *fp; 66 int (*ioctlf) __P((struct file *, u_long, caddr_t, struct proc *)); 67 struct partinfo partp; 68 struct disklabel label; 69 70 fdp = p->p_fd; 71 if ((u_int)SCARG(uap, fd) >= fdp->fd_nfiles || 72 (fp = fdp->fd_ofiles[SCARG(uap, fd)]) == NULL || 73 (fp->f_iflags & FIF_WANTCLOSE) != 0) 74 return (EBADF); 75 76 FILE_USE(fp); 77 error = 0; 78 ioctlf = fp->f_ops->fo_ioctl; 79 com = SCARG(uap, com); 80 81 switch (com) { 82 case LINUX_BLKGETSIZE: 83 /* 84 * Try to get the partition size of this device. If that 85 * fails, it may be a disk without label; try to get 86 * the default label and compute the size from it. 87 */ 88 error = ioctlf(fp, DIOCGPART, (caddr_t)&partp, p); 89 if (error != 0) { 90 error = ioctlf(fp, DIOCGDEFLABEL, (caddr_t)&label, p); 91 if (error != 0) 92 break; 93 size = label.d_nsectors * label.d_ntracks * 94 label.d_ncylinders; 95 } else 96 size = partp.part->p_size; 97 error = copyout(&size, SCARG(uap, data), sizeof size); 98 break; 99 case LINUX_BLKSECTGET: 100 error = ioctlf(fp, DIOCGDEFLABEL, (caddr_t)&label, p); 101 if (error != 0) 102 break; 103 error = copyout(&label.d_secsize, SCARG(uap, data), 104 sizeof label.d_secsize); 105 break; 106 case LINUX_BLKROSET: 107 case LINUX_BLKROGET: 108 case LINUX_BLKRRPART: 109 case LINUX_BLKFLSBUF: 110 case LINUX_BLKRASET: 111 case LINUX_BLKRAGET: 112 case LINUX_BLKFRASET: 113 case LINUX_BLKFRAGET: 114 case LINUX_BLKSECTSET: 115 case LINUX_BLKSSZGET: 116 case LINUX_BLKPG: 117 default: 118 error = ENOTTY; 119 } 120 121 FILE_UNUSE(fp, p); 122 123 return error; 124 } 125