1 /* $OpenBSD: linux_blkio.c,v 1.5 2002/03/14 01:26:50 millert Exp $ */
2 /* $NetBSD: linux_blkio.c,v 1.3 2001/01/18 17:48:04 tv Exp $ */
3
4 /*
5 * Copyright (c) 2001 Wasabi Systems, Inc.
6 * All rights reserved.
7 *
8 * Written by Frank van der Linden for Wasabi Systems, Inc.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed for the NetBSD Project by
21 * Wasabi Systems, Inc.
22 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
23 * or promote products derived from this software without specific prior
24 * written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/ioctl.h>
42 #include <sys/file.h>
43 #include <sys/filedesc.h>
44 #include <sys/mount.h>
45 #include <sys/proc.h>
46 #include <sys/disklabel.h>
47
48 #include <sys/syscallargs.h>
49
50 #include <compat/linux/linux_types.h>
51 #include <compat/linux/linux_ioctl.h>
52 #include <compat/linux/linux_signal.h>
53 #include <compat/linux/linux_util.h>
54 #include <compat/linux/linux_blkio.h>
55
56 #include <compat/linux/linux_syscallargs.h>
57
58 int
linux_ioctl_blkio(struct proc * p,struct linux_sys_ioctl_args * uap,register_t * retval)59 linux_ioctl_blkio(struct proc *p, struct linux_sys_ioctl_args *uap,
60 register_t *retval)
61 {
62 u_long com;
63 long size;
64 int error;
65 struct filedesc *fdp;
66 struct file *fp;
67 int (*ioctlf)(struct file *, u_long, caddr_t, struct proc *);
68 struct partinfo partp;
69 struct disklabel label;
70
71 fdp = p->p_fd;
72 if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL)
73 return (EBADF);
74 FREF(fp);
75 error = 0;
76 ioctlf = fp->f_ops->fo_ioctl;
77 com = SCARG(uap, com);
78
79 switch (com) {
80 case LINUX_BLKGETSIZE:
81 /*
82 * Try to get the partition size of this device. If that
83 * fails, it may be a disk without label; try to get
84 * the default label and compute the size from it.
85 */
86 error = ioctlf(fp, DIOCGPART, (caddr_t)&partp, p);
87 if (error != 0) {
88 error = ioctlf(fp, DIOCGDINFO, (caddr_t)&label, p);
89 if (error != 0)
90 break;
91 size = label.d_nsectors * label.d_ntracks *
92 label.d_ncylinders;
93 } else
94 size = partp.part->p_size;
95 error = copyout(&size, SCARG(uap, data), sizeof size);
96 break;
97 case LINUX_BLKSECTGET:
98 error = ioctlf(fp, DIOCGDINFO, (caddr_t)&label, p);
99 if (error != 0)
100 break;
101 error = copyout(&label.d_secsize, SCARG(uap, data),
102 sizeof label.d_secsize);
103 break;
104 case LINUX_BLKROSET:
105 case LINUX_BLKROGET:
106 case LINUX_BLKRRPART:
107 case LINUX_BLKFLSBUF:
108 case LINUX_BLKRASET:
109 case LINUX_BLKRAGET:
110 case LINUX_BLKFRASET:
111 case LINUX_BLKFRAGET:
112 case LINUX_BLKSECTSET:
113 case LINUX_BLKSSZGET:
114 case LINUX_BLKPG:
115 default:
116 error = ENOTTY;
117 }
118
119 FRELE(fp);
120 return error;
121 }
122