1 | /* $NetBSD: linux_ioctl.c,v 1.58 2014/03/23 06:03:38 dholland Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 1995, 1998, 2008 The NetBSD Foundation, Inc. |
5 | * All rights reserved. |
6 | * |
7 | * This code is derived from software contributed to The NetBSD Foundation |
8 | * by Frank van der Linden and Eric Haszlakiewicz. |
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 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
29 | * POSSIBILITY OF SUCH DAMAGE. |
30 | */ |
31 | |
32 | #include <sys/cdefs.h> |
33 | __KERNEL_RCSID(0, "$NetBSD: linux_ioctl.c,v 1.58 2014/03/23 06:03:38 dholland Exp $" ); |
34 | |
35 | #if defined(_KERNEL_OPT) |
36 | #include "sequencer.h" |
37 | #endif |
38 | |
39 | #include <sys/param.h> |
40 | #include <sys/proc.h> |
41 | #include <sys/systm.h> |
42 | #include <sys/conf.h> |
43 | #include <sys/ioctl.h> |
44 | #include <sys/mount.h> |
45 | #include <sys/file.h> |
46 | #include <sys/vnode.h> |
47 | #include <sys/filedesc.h> |
48 | |
49 | #include <sys/socket.h> |
50 | #include <net/if.h> |
51 | #include <sys/sockio.h> |
52 | |
53 | #include <sys/syscallargs.h> |
54 | |
55 | #include <compat/linux/common/linux_types.h> |
56 | #include <compat/linux/common/linux_signal.h> |
57 | #include <compat/linux/common/linux_ioctl.h> |
58 | #include <compat/linux/common/linux_ipc.h> |
59 | #include <compat/linux/common/linux_sem.h> |
60 | |
61 | #include <compat/linux/linux_syscallargs.h> |
62 | |
63 | #include <compat/ossaudio/ossaudio.h> |
64 | #define LINUX_TO_OSS(v) ((const void *)(v)) /* do nothing, same ioctl() encoding */ |
65 | |
66 | #include <dev/ic/mfiio.h> |
67 | #define LINUX_MEGARAID_CMD _LINUX_IOWR('M', 1, struct mfi_ioc_packet) |
68 | #define LINUX_MEGARAID_GET_AEN _LINUX_IOW('M', 3, struct mfi_ioc_aen) |
69 | |
70 | /* |
71 | * Most ioctl command are just converted to their NetBSD values, |
72 | * and passed on. The ones that take structure pointers and (flag) |
73 | * values need some massaging. |
74 | */ |
75 | int |
76 | linux_sys_ioctl(struct lwp *l, const struct linux_sys_ioctl_args *uap, register_t *retval) |
77 | { |
78 | /* { |
79 | syscallarg(int) fd; |
80 | syscallarg(u_long) com; |
81 | syscallarg(void *) data; |
82 | } */ |
83 | int error; |
84 | |
85 | switch (LINUX_IOCGROUP(SCARG(uap, com))) { |
86 | case 'M': |
87 | switch(SCARG(uap, com)) { |
88 | case LINUX_MEGARAID_CMD: |
89 | case LINUX_MEGARAID_GET_AEN: |
90 | { |
91 | struct sys_ioctl_args ua; |
92 | u_long com = 0; |
93 | if (SCARG(uap, com) & IOC_IN) |
94 | com |= IOC_OUT; |
95 | if (SCARG(uap, com) & IOC_OUT) |
96 | com |= IOC_IN; |
97 | SCARG(&ua, fd) = SCARG(uap, fd); |
98 | SCARG(&ua, com) = SCARG(uap, com); |
99 | SCARG(&ua, com) &= ~IOC_DIRMASK; |
100 | SCARG(&ua, com) |= com; |
101 | SCARG(&ua, data) = SCARG(uap, data); |
102 | error = sys_ioctl(l, (const void *)&ua, retval); |
103 | break; |
104 | } |
105 | default: |
106 | error = oss_ioctl_mixer(l, LINUX_TO_OSS(uap), retval); |
107 | break; |
108 | } |
109 | break; |
110 | case 'Q': |
111 | error = oss_ioctl_sequencer(l, LINUX_TO_OSS(uap), retval); |
112 | break; |
113 | case 'P': |
114 | error = oss_ioctl_audio(l, LINUX_TO_OSS(uap), retval); |
115 | break; |
116 | case 'V': /* video4linux2 */ |
117 | case 'd': /* drm */ |
118 | { |
119 | struct sys_ioctl_args ua; |
120 | u_long com = 0; |
121 | if (SCARG(uap, com) & IOC_IN) |
122 | com |= IOC_OUT; |
123 | if (SCARG(uap, com) & IOC_OUT) |
124 | com |= IOC_IN; |
125 | SCARG(&ua, fd) = SCARG(uap, fd); |
126 | SCARG(&ua, com) = SCARG(uap, com); |
127 | SCARG(&ua, com) &= ~IOC_DIRMASK; |
128 | SCARG(&ua, com) |= com; |
129 | SCARG(&ua, data) = SCARG(uap, data); |
130 | error = sys_ioctl(l, (const void *)&ua, retval); |
131 | break; |
132 | } |
133 | case 'r': /* VFAT ioctls; not yet supported */ |
134 | error = ENOSYS; |
135 | break; |
136 | case 'S': |
137 | error = linux_ioctl_cdrom(l, uap, retval); |
138 | break; |
139 | case 't': |
140 | case 'f': |
141 | error = linux_ioctl_termios(l, uap, retval); |
142 | break; |
143 | case 'm': |
144 | error = linux_ioctl_mtio(l, uap, retval); |
145 | break; |
146 | case 'T': |
147 | { |
148 | #if NSEQUENCER > 0 |
149 | /* XXX XAX 2x check this. */ |
150 | /* |
151 | * Both termios and the MIDI sequencer use 'T' to identify |
152 | * the ioctl, so we have to differentiate them in another |
153 | * way. We do it by indexing in the cdevsw with the major |
154 | * device number and check if that is the sequencer entry. |
155 | */ |
156 | bool is_sequencer = false; |
157 | struct file *fp; |
158 | struct vnode *vp; |
159 | struct vattr va; |
160 | extern const struct cdevsw sequencer_cdevsw; |
161 | |
162 | if ((fp = fd_getfile(SCARG(uap, fd))) == NULL) |
163 | return EBADF; |
164 | if (fp->f_type == DTYPE_VNODE && |
165 | (vp = (struct vnode *)fp->f_data) != NULL && |
166 | vp->v_type == VCHR) { |
167 | vn_lock(vp, LK_SHARED | LK_RETRY); |
168 | error = VOP_GETATTR(vp, &va, l->l_cred); |
169 | VOP_UNLOCK(vp); |
170 | if (error == 0 && |
171 | cdevsw_lookup(va.va_rdev) == &sequencer_cdevsw) |
172 | is_sequencer = true; |
173 | } |
174 | if (is_sequencer) { |
175 | error = oss_ioctl_sequencer(l, (const void *)LINUX_TO_OSS(uap), |
176 | retval); |
177 | } |
178 | else { |
179 | error = linux_ioctl_termios(l, uap, retval); |
180 | } |
181 | fd_putfile(SCARG(uap, fd)); |
182 | #else |
183 | error = linux_ioctl_termios(l, uap, retval); |
184 | #endif |
185 | } |
186 | break; |
187 | case '"': |
188 | error = linux_ioctl_sg(l, uap, retval); |
189 | break; |
190 | case 0x89: |
191 | error = linux_ioctl_socket(l, uap, retval); |
192 | break; |
193 | case 0x03: |
194 | error = linux_ioctl_hdio(l, uap, retval); |
195 | break; |
196 | case 0x02: |
197 | error = linux_ioctl_fdio(l, uap, retval); |
198 | break; |
199 | case 0x12: |
200 | error = linux_ioctl_blkio(l, uap, retval); |
201 | break; |
202 | default: |
203 | error = linux_machdepioctl(l, uap, retval); |
204 | break; |
205 | } |
206 | if (error == EPASSTHROUGH) { |
207 | /* |
208 | * linux returns EINVAL or ENOTTY for not supported ioctls. |
209 | */ |
210 | error = EINVAL; |
211 | } |
212 | |
213 | return error; |
214 | } |
215 | |