| 1 | /* $NetBSD: linux_blkio.c,v 1.18 2015/12/08 20:36:14 christos 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 1.18 2015/12/08 20:36:14 christos 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 | #include <compat/linux/common/linux_ipc.h> |
| 58 | #include <compat/linux/common/linux_sem.h> |
| 59 | |
| 60 | #include <compat/linux/linux_syscallargs.h> |
| 61 | |
| 62 | int |
| 63 | linux_ioctl_blkio(struct lwp *l, const struct linux_sys_ioctl_args *uap, |
| 64 | register_t *retval) |
| 65 | { |
| 66 | u_long com; |
| 67 | long size; |
| 68 | int error; |
| 69 | file_t *fp; |
| 70 | int (*ioctlf)(file_t *, u_long, void *); |
| 71 | struct partinfo pi; |
| 72 | struct disklabel label; |
| 73 | |
| 74 | if ((fp = fd_getfile(SCARG(uap, fd))) == NULL) |
| 75 | return (EBADF); |
| 76 | |
| 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, DIOCGPARTINFO, &pi); |
| 89 | if (error != 0) { |
| 90 | error = ioctlf(fp, DIOCGDINFO, &label); |
| 91 | if (error != 0) |
| 92 | break; |
| 93 | size = label.d_nsectors * label.d_ntracks * |
| 94 | label.d_ncylinders; |
| 95 | } else |
| 96 | size = pi.pi_size; |
| 97 | error = copyout(&size, SCARG(uap, data), sizeof size); |
| 98 | break; |
| 99 | case LINUX_BLKSECTGET: |
| 100 | error = ioctlf(fp, DIOCGDINFO, &label); |
| 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 | fd_putfile(SCARG(uap, fd)); |
| 122 | |
| 123 | return error; |
| 124 | } |
| 125 | |