linux_blkio.c revision 1.2.2.2
1 1.2.2.2 bouyer /* $NetBSD: linux_blkio.c,v 1.2.2.2 2001/01/18 09:23:13 bouyer Exp $ */ 2 1.2.2.2 bouyer 3 1.2.2.2 bouyer /* 4 1.2.2.2 bouyer * Copyright (c) 2001 Wasabi Systems, Inc. 5 1.2.2.2 bouyer * All rights reserved. 6 1.2.2.2 bouyer * 7 1.2.2.2 bouyer * Written by Frank van der Linden for Wasabi Systems, Inc. 8 1.2.2.2 bouyer * 9 1.2.2.2 bouyer * Redistribution and use in source and binary forms, with or without 10 1.2.2.2 bouyer * modification, are permitted provided that the following conditions 11 1.2.2.2 bouyer * are met: 12 1.2.2.2 bouyer * 1. Redistributions of source code must retain the above copyright 13 1.2.2.2 bouyer * notice, this list of conditions and the following disclaimer. 14 1.2.2.2 bouyer * 2. Redistributions in binary form must reproduce the above copyright 15 1.2.2.2 bouyer * notice, this list of conditions and the following disclaimer in the 16 1.2.2.2 bouyer * documentation and/or other materials provided with the distribution. 17 1.2.2.2 bouyer * 3. All advertising materials mentioning features or use of this software 18 1.2.2.2 bouyer * must display the following acknowledgement: 19 1.2.2.2 bouyer * This product includes software developed for the NetBSD Project by 20 1.2.2.2 bouyer * Wasabi Systems, Inc. 21 1.2.2.2 bouyer * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 1.2.2.2 bouyer * or promote products derived from this software without specific prior 23 1.2.2.2 bouyer * written permission. 24 1.2.2.2 bouyer * 25 1.2.2.2 bouyer * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 1.2.2.2 bouyer * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 1.2.2.2 bouyer * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 1.2.2.2 bouyer * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 1.2.2.2 bouyer * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 1.2.2.2 bouyer * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 1.2.2.2 bouyer * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 1.2.2.2 bouyer * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 1.2.2.2 bouyer * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 1.2.2.2 bouyer * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 1.2.2.2 bouyer * POSSIBILITY OF SUCH DAMAGE. 36 1.2.2.2 bouyer */ 37 1.2.2.2 bouyer 38 1.2.2.2 bouyer #include <sys/param.h> 39 1.2.2.2 bouyer #include <sys/systm.h> 40 1.2.2.2 bouyer #include <sys/ioctl.h> 41 1.2.2.2 bouyer #include <sys/file.h> 42 1.2.2.2 bouyer #include <sys/filedesc.h> 43 1.2.2.2 bouyer #include <sys/mount.h> 44 1.2.2.2 bouyer #include <sys/proc.h> 45 1.2.2.2 bouyer #include <sys/disklabel.h> 46 1.2.2.2 bouyer 47 1.2.2.2 bouyer #include <sys/syscallargs.h> 48 1.2.2.2 bouyer 49 1.2.2.2 bouyer #include <compat/linux/common/linux_types.h> 50 1.2.2.2 bouyer #include <compat/linux/common/linux_ioctl.h> 51 1.2.2.2 bouyer #include <compat/linux/common/linux_signal.h> 52 1.2.2.2 bouyer #include <compat/linux/common/linux_util.h> 53 1.2.2.2 bouyer #include <compat/linux/common/linux_blkio.h> 54 1.2.2.2 bouyer 55 1.2.2.2 bouyer #include <compat/linux/linux_syscallargs.h> 56 1.2.2.2 bouyer 57 1.2.2.2 bouyer int 58 1.2.2.2 bouyer linux_ioctl_blkio(struct proc *p, struct linux_sys_ioctl_args *uap, 59 1.2.2.2 bouyer register_t *retval) 60 1.2.2.2 bouyer { 61 1.2.2.2 bouyer u_long com; 62 1.2.2.2 bouyer long size; 63 1.2.2.2 bouyer int error; 64 1.2.2.2 bouyer struct filedesc *fdp; 65 1.2.2.2 bouyer struct file *fp; 66 1.2.2.2 bouyer int (*ioctlf) __P((struct file *, u_long, caddr_t, struct proc *)); 67 1.2.2.2 bouyer struct partinfo partp; 68 1.2.2.2 bouyer struct disklabel label; 69 1.2.2.2 bouyer 70 1.2.2.2 bouyer fdp = p->p_fd; 71 1.2.2.2 bouyer if ((u_int)SCARG(uap, fd) >= fdp->fd_nfiles || 72 1.2.2.2 bouyer (fp = fdp->fd_ofiles[SCARG(uap, fd)]) == NULL || 73 1.2.2.2 bouyer (fp->f_iflags & FIF_WANTCLOSE) != 0) 74 1.2.2.2 bouyer return (EBADF); 75 1.2.2.2 bouyer 76 1.2.2.2 bouyer FILE_USE(fp); 77 1.2.2.2 bouyer error = 0; 78 1.2.2.2 bouyer ioctlf = fp->f_ops->fo_ioctl; 79 1.2.2.2 bouyer com = SCARG(uap, com); 80 1.2.2.2 bouyer 81 1.2.2.2 bouyer switch (com) { 82 1.2.2.2 bouyer case LINUX_BLKGETSIZE: 83 1.2.2.2 bouyer /* 84 1.2.2.2 bouyer * Try to get the partition size of this device. If that 85 1.2.2.2 bouyer * fails, it may be a disk without label; try to get 86 1.2.2.2 bouyer * the default label and compute the size from it. 87 1.2.2.2 bouyer */ 88 1.2.2.2 bouyer error = ioctlf(fp, DIOCGPART, (caddr_t)&partp, p); 89 1.2.2.2 bouyer if (error != 0) { 90 1.2.2.2 bouyer error = ioctlf(fp, DIOCGDEFLABEL, (caddr_t)&label, p); 91 1.2.2.2 bouyer if (error != 0) 92 1.2.2.2 bouyer break; 93 1.2.2.2 bouyer size = label.d_nsectors * label.d_ntracks * 94 1.2.2.2 bouyer label.d_ncylinders; 95 1.2.2.2 bouyer } else 96 1.2.2.2 bouyer size = partp.part->p_size; 97 1.2.2.2 bouyer error = copyout(&size, SCARG(uap, data), sizeof size); 98 1.2.2.2 bouyer break; 99 1.2.2.2 bouyer case LINUX_BLKSECTGET: 100 1.2.2.2 bouyer error = ioctlf(fp, DIOCGDEFLABEL, (caddr_t)&label, p); 101 1.2.2.2 bouyer if (error != 0) 102 1.2.2.2 bouyer break; 103 1.2.2.2 bouyer error = copyout(&label.d_secsize, SCARG(uap, data), 104 1.2.2.2 bouyer sizeof label.d_secsize); 105 1.2.2.2 bouyer break; 106 1.2.2.2 bouyer case LINUX_BLKROSET: 107 1.2.2.2 bouyer case LINUX_BLKROGET: 108 1.2.2.2 bouyer case LINUX_BLKRRPART: 109 1.2.2.2 bouyer case LINUX_BLKFLSBUF: 110 1.2.2.2 bouyer case LINUX_BLKRASET: 111 1.2.2.2 bouyer case LINUX_BLKRAGET: 112 1.2.2.2 bouyer case LINUX_BLKFRASET: 113 1.2.2.2 bouyer case LINUX_BLKFRAGET: 114 1.2.2.2 bouyer case LINUX_BLKSECTSET: 115 1.2.2.2 bouyer case LINUX_BLKSSZGET: 116 1.2.2.2 bouyer case LINUX_BLKPG: 117 1.2.2.2 bouyer default: 118 1.2.2.2 bouyer error = ENOTTY; 119 1.2.2.2 bouyer } 120 1.2.2.2 bouyer 121 1.2.2.2 bouyer FILE_UNUSE(fp, p); 122 1.2.2.2 bouyer 123 1.2.2.2 bouyer return error; 124 1.2.2.2 bouyer } 125
Indexes created Fri Sep 26 08:10:20 GMT 2025