1 /* $NetBSD: svr4_ioctl.c,v 1.35 2008/04/28 20:23:45 martin Exp $ */
2
3 /*-
4 * Copyright (c) 1994, 2008 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Christos Zoulas.
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: svr4_ioctl.c,v 1.35 2008/04/28 20:23:45 martin Exp $");
34
35 #include <sys/param.h>
36 #include <sys/proc.h>
37 #include <sys/systm.h>
38 #include <sys/file.h>
39 #include <sys/filedesc.h>
40 #include <sys/ioctl.h>
41 #include <sys/termios.h>
42 #include <sys/tty.h>
43 #include <sys/socket.h>
44 #include <sys/mount.h>
45 #include <net/if.h>
46 #include <sys/malloc.h>
47
48 #include <sys/syscallargs.h>
49
50 #include <compat/sys/socket.h>
51
52 #include <compat/svr4/svr4_types.h>
53 #include <compat/svr4/svr4_util.h>
54 #include <compat/svr4/svr4_signal.h>
55 #include <compat/svr4/svr4_lwp.h>
56 #include <compat/svr4/svr4_ucontext.h>
57 #include <compat/svr4/svr4_syscallargs.h>
58 #include <compat/svr4/svr4_stropts.h>
59 #include <compat/svr4/svr4_ioctl.h>
60 #include <compat/svr4/svr4_termios.h>
61 #include <compat/svr4/svr4_ttold.h>
62 #include <compat/svr4/svr4_filio.h>
63 #include <compat/svr4/svr4_sockio.h>
64
65 #ifdef DEBUG_SVR4
66 static void svr4_decode_cmd(u_long, char *, char *, int *, int *);
67 /*
68 * Decode an ioctl command symbolically
69 */
70 static void
71 svr4_decode_cmd(cmd, dir, c, num, argsiz)
72 u_long cmd;
73 char *dir, *c;
74 int *num, *argsiz;
75 {
76 if (cmd & SVR4_IOC_VOID)
77 *dir++ = 'V';
78 if (cmd & SVR4_IOC_IN)
79 *dir++ = 'R';
80 if (cmd & SVR4_IOC_OUT)
81 *dir++ = 'W';
82 *dir = '\0';
83 if (cmd & SVR4_IOC_INOUT)
84 *argsiz = (cmd >> 16) & 0xff;
85 else
86 *argsiz = -1;
87
88 *c = (cmd >> 8) & 0xff;
89 *num = cmd & 0xff;
90 }
91 #endif
92
93 int
94 svr4_sys_ioctl(struct lwp *l, const struct svr4_sys_ioctl_args *uap, register_t *retval)
95 {
96 file_t *fp;
97 u_long cmd;
98 int error;
99 int (*fun)(file_t *, struct lwp *, register_t *, int, u_long, void *);
100 #ifdef DEBUG_SVR4
101 char dir[4];
102 char c;
103 int num;
104 int argsiz;
105
106 svr4_decode_cmd(SCARG(uap, com), dir, &c, &num, &argsiz);
107
108 uprintf("svr4_ioctl(%d, _IO%s(%c, %d, %d), %p);\n", SCARG(uap, fd),
109 dir, c, num, argsiz, SCARG(uap, data));
110 #endif
111 cmd = SCARG(uap, com);
112
113 if ((fp = fd_getfile(SCARG(uap, fd))) == NULL)
114 return EBADF;
115
116 if ((fp->f_flag & (FREAD | FWRITE)) == 0) {
117 error = EBADF;
118 goto out;
119 }
120
121 switch (cmd & 0xff00) {
122 case SVR4_tIOC:
123 fun = svr4_ttold_ioctl;
124 break;
125
126 case SVR4_TIOC:
127 fun = svr4_term_ioctl;
128 break;
129
130 case SVR4_STR:
131 fun = svr4_stream_ioctl;
132 break;
133
134 case SVR4_FIOC:
135 fun = svr4_fil_ioctl;
136 break;
137
138 case SVR4_SIOC:
139 fun = svr4_sock_ioctl;
140 break;
141
142 case SVR4_XIOC:
143 /* We do not support those */
144 error = EINVAL;
145 goto out;
146
147 default:
148 DPRINTF(("Unimplemented ioctl %lx\n", cmd));
149 error = 0; /* XXX: really ENOSYS */
150 goto out;
151 }
152
153 error = (*fun)(fp, l, retval, SCARG(uap, fd), cmd, SCARG(uap, data));
154 out:
155 fd_putfile(SCARG(uap, fd));
156 return (error);
157 }
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