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 | |