Annotation of sys/compat/linux/linux_blkio.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: linux_blkio.c,v 1.7 2007/06/06 17:15:13 deraadt 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
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: /* XXX ignores > 32bit blocks */
95: size = DL_GETPSIZE(partp.part);
96: error = copyout(&size, SCARG(uap, data), sizeof size);
97: break;
98: case LINUX_BLKSECTGET:
99: error = ioctlf(fp, DIOCGDINFO, (caddr_t)&label, p);
100: if (error != 0)
101: break;
102: error = copyout(&label.d_secsize, SCARG(uap, data),
103: sizeof label.d_secsize);
104: break;
105: case LINUX_BLKROSET:
106: case LINUX_BLKROGET:
107: case LINUX_BLKRRPART:
108: case LINUX_BLKFLSBUF:
109: case LINUX_BLKRASET:
110: case LINUX_BLKRAGET:
111: case LINUX_BLKFRASET:
112: case LINUX_BLKFRAGET:
113: case LINUX_BLKSECTSET:
114: case LINUX_BLKSSZGET:
115: case LINUX_BLKPG:
116: default:
117: error = ENOTTY;
118: }
119:
120: FRELE(fp);
121: return error;
122: }
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