1 /* $NetBSD: linux32_ioctl.c,v 1.15 2021/09/19 23:51:37 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 2006 Emmanuel Dreyfus, all rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by Emmanuel Dreyfus
17 * 4. The name of the author may not be used to endorse or promote
18 * products derived from this software without specific prior written
19 * permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS''
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
23 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 #include <sys/cdefs.h>
35 __KERNEL_RCSID(0, "$NetBSD: linux32_ioctl.c,v 1.15 2021/09/19 23:51:37 thorpej Exp $");
36
37 #include <sys/types.h>
38 #include <sys/param.h>
39 #include <sys/time.h>
40 #include <sys/ucred.h>
41 #include <sys/ioctl.h>
42 #include <sys/file.h>
43 #include <sys/filedesc.h>
44
45 #include <compat/netbsd32/netbsd32.h>
46 #include <compat/netbsd32/netbsd32_syscallargs.h>
47
48 #include <compat/linux/common/linux_types.h>
49 #include <compat/linux/common/linux_signal.h>
50 #include <compat/linux/common/linux_ipc.h>
51 #include <compat/linux/common/linux_ioctl.h>
52 #include <compat/linux/common/linux_sem.h>
53 #include <compat/linux/linux_syscallargs.h>
54
55 #include <compat/linux32/common/linux32_types.h>
56 #include <compat/linux32/common/linux32_signal.h>
57 #include <compat/linux32/common/linux32_ioctl.h>
58 #include <compat/linux32/common/linux32_termios.h>
59 #include <compat/linux32/common/linux32_sysctl.h>
60 #include <compat/linux32/linux32_syscallargs.h>
61
62 #include <compat/ossaudio/ossaudio.h>
63 #include <compat/ossaudio/ossaudiovar.h>
64
65 int
linux32_sys_ioctl(struct lwp * l,const struct linux32_sys_ioctl_args * uap,register_t * retval)66 linux32_sys_ioctl(struct lwp *l, const struct linux32_sys_ioctl_args *uap, register_t *retval)
67 {
68 /* {
69 syscallarg(int) fd;
70 syscallarg(netbsd32_u_long) com;
71 syscallarg(netbsd32_charp) data;
72 } */
73 struct oss_sys_ioctl_args ossuap;
74 int group;
75 int error;
76
77 group = LINUX32_IOCGROUP((int)SCARG(uap, com));
78
79 #ifdef DEBUG_LINUX
80 printf("linux32_sys_ioctl(%d, 0x%x/\'%c\', %p)\n", SCARG(uap, fd),
81 SCARG(uap, com), (char)group, SCARG_P32(uap, data));
82 #endif
83
84 switch(group) {
85 case 'T':
86 {
87 /*
88 * Termios, the MIDI sequencer, and timerfd use 'T' to
89 * identify the ioctl, so we have to differentiate them
90 * in another way.
91 *
92 * (XXX We don't bother with MIDI here.)
93 */
94 struct file *fp;
95
96 if ((fp = fd_getfile(SCARG(uap, fd))) == NULL)
97 return EBADF;
98
99 if (fp->f_type == DTYPE_TIMERFD) {
100 struct linux_sys_ioctl_args ua;
101 SCARG(&ua, fd) = SCARG(uap, fd);
102 SCARG(&ua, com) = SCARG(uap, com);
103 SCARG(&ua, data) = SCARG_P32(uap, data);
104 error = linux_ioctl_timerfd(l, &ua, retval);
105 } else {
106 error = linux32_ioctl_termios(l, uap, retval);
107 }
108 fd_putfile(SCARG(uap, fd));
109 break;
110 }
111 case 'M':
112 case 'Q':
113 case 'P':
114 SCARG(&ossuap, fd) = SCARG(uap, fd);
115 SCARG(&ossuap, com) = (u_long)SCARG(uap, com);
116 SCARG(&ossuap, data) = SCARG_P32(uap, data);
117 switch (group) {
118 case 'M':
119 error = oss_ioctl_mixer(l, &ossuap, retval);
120 break;
121 case 'Q':
122 error = oss_ioctl_sequencer(l, &ossuap, retval);
123 break;
124 case 'P':
125 error = oss_ioctl_audio(l, &ossuap, retval);
126 break;
127 default:
128 error = EINVAL; /* shutup gcc */
129 break;
130 }
131 break;
132 case 'V': /* video4linux2 */
133 case 'd': /* drm */
134 {
135 struct sys_ioctl_args ua;
136 u_long com = 0;
137 if (SCARG(uap, com) & IOC_IN)
138 com |= IOC_OUT;
139 if (SCARG(uap, com) & IOC_OUT)
140 com |= IOC_IN;
141 SCARG(&ua, fd) = SCARG(uap, fd);
142 SCARG(&ua, com) = SCARG(uap, com);
143 SCARG(&ua, com) &= ~IOC_DIRMASK;
144 SCARG(&ua, com) |= com;
145 SCARG(&ua, data) = SCARG_P32(uap, data);
146 error = sys_ioctl(l, (const void *)&ua, retval);
147 break;
148 }
149 case 0x89:
150 error = linux32_ioctl_socket(l, uap, retval);
151 break;
152 default:
153 #ifdef DEBUG_LINUX
154 printf("Not yet implemented ioctl group \'%c\'\n", group);
155 #endif
156 error = EINVAL;
157 break;
158 }
159
160 if (error == EPASSTHROUGH)
161 error = EINVAL;
162
163 return error;
164 }
165