1 /* $NetBSD: linux_hdio.c,v 1.19 2021/09/07 11:43:04 riastradh Exp $ */
2
3 /*
4 * Copyright (c) 2000 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_hdio.c,v 1.19 2021/09/07 11:43:04 riastradh 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 <dev/ata/atareg.h>
51 #include <dev/ic/wdcreg.h>
52 #include <sys/ataio.h>
53
54 #include <sys/syscallargs.h>
55
56 #include <compat/linux/common/linux_types.h>
57 #include <compat/linux/common/linux_ioctl.h>
58 #include <compat/linux/common/linux_signal.h>
59 #include <compat/linux/common/linux_util.h>
60 #include <compat/linux/common/linux_hdio.h>
61 #include <compat/linux/common/linux_ipc.h>
62 #include <compat/linux/common/linux_sem.h>
63
64 #include <compat/linux/linux_syscallargs.h>
65
66 int
linux_ioctl_hdio(struct lwp * l,const struct linux_sys_ioctl_args * uap,register_t * retval)67 linux_ioctl_hdio(struct lwp *l, const struct linux_sys_ioctl_args *uap,
68 register_t *retval)
69 {
70 u_long com;
71 int error, error1;
72 struct file *fp;
73 int (*ioctlf)(struct file *, u_long, void *);
74 struct atareq req;
75 struct disklabel label;
76 struct partinfo pi;
77 struct linux_hd_geometry hdg;
78 struct linux_hd_big_geometry hdg_big;
79
80 if ((fp = fd_getfile(SCARG(uap, fd))) == NULL)
81 return (EBADF);
82
83 com = SCARG(uap, com);
84 ioctlf = fp->f_ops->fo_ioctl;
85 retval[0] = error = 0;
86
87 switch (com) {
88 case LINUX_HDIO_OBSOLETE_IDENTITY:
89 case LINUX_HDIO_GET_IDENTITY:
90 req.flags = ATACMD_READ;
91 req.command = WDCC_IDENTIFY;
92 req.databuf = SCARG(uap, data);
93 /*
94 * 142 is the size of the old structure used by Linux,
95 * which doesn't seem to be defined anywhere anymore.
96 * The new function should return the entire 512 byte area.
97 */
98 req.datalen = com == LINUX_HDIO_GET_IDENTITY ? 512 : 142;
99 req.timeout = 1000;
100 error = ioctlf(fp, ATAIOCCOMMAND, &req);
101 if (error != 0)
102 break;
103 if (req.retsts != ATACMD_OK)
104 error = EIO;
105 break;
106 case LINUX_HDIO_GETGEO:
107 error = linux_machdepioctl(l, uap, retval);
108 if (error == 0)
109 break;
110 error = ioctlf(fp, DIOCGDINFO, &label);
111 error1 = ioctlf(fp, DIOCGPARTINFO, &pi);
112 if (error != 0 && error1 != 0) {
113 error = error1;
114 break;
115 }
116 memset(&hdg, 0, sizeof(hdg));
117 hdg.start = error1 != 0 ? pi.pi_offset : 0;
118 hdg.heads = label.d_ntracks;
119 hdg.cylinders = label.d_ncylinders;
120 hdg.sectors = label.d_nsectors;
121 error = copyout(&hdg, SCARG(uap, data), sizeof hdg);
122 break;
123 case LINUX_HDIO_GETGEO_BIG:
124 error = linux_machdepioctl(l, uap, retval);
125 if (error == 0)
126 break;
127 /* FALLTHROUGH */
128 case LINUX_HDIO_GETGEO_BIG_RAW:
129 error = ioctlf(fp, DIOCGDINFO, &label);
130 error1 = ioctlf(fp, DIOCGPARTINFO, &pi);
131 if (error != 0 && error1 != 0) {
132 error = error1;
133 break;
134 }
135 memset(&hdg_big, 0, sizeof(hdg_big));
136 hdg_big.start = error1 != 0 ? pi.pi_offset : 0;
137 hdg_big.heads = label.d_ntracks;
138 hdg_big.cylinders = label.d_ncylinders;
139 hdg_big.sectors = label.d_nsectors;
140 error = copyout(&hdg_big, SCARG(uap, data), sizeof hdg_big);
141 break;
142 case LINUX_HDIO_GET_UNMASKINTR:
143 case LINUX_HDIO_GET_MULTCOUNT:
144 case LINUX_HDIO_GET_KEEPSETTINGS:
145 case LINUX_HDIO_GET_32BIT:
146 case LINUX_HDIO_GET_NOWERR:
147 case LINUX_HDIO_GET_DMA:
148 case LINUX_HDIO_GET_NICE:
149 case LINUX_HDIO_DRIVE_RESET:
150 case LINUX_HDIO_TRISTATE_HWIF:
151 case LINUX_HDIO_DRIVE_TASK:
152 case LINUX_HDIO_DRIVE_CMD:
153 case LINUX_HDIO_SET_MULTCOUNT:
154 case LINUX_HDIO_SET_UNMASKINTR:
155 case LINUX_HDIO_SET_KEEPSETTINGS:
156 case LINUX_HDIO_SET_32BIT:
157 case LINUX_HDIO_SET_NOWERR:
158 case LINUX_HDIO_SET_DMA:
159 case LINUX_HDIO_SET_PIO_MODE:
160 case LINUX_HDIO_SCAN_HWIF:
161 case LINUX_HDIO_SET_NICE:
162 case LINUX_HDIO_UNREGISTER_HWIF:
163 error = EINVAL;
164 }
165
166 fd_putfile(SCARG(uap, fd));
167
168 return error;
169 }
170