1 /*
2 * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
3 * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
4 * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
5 * Copyright (c) 1996-2001 Wichert Akkerman <wichert@cistron.nl>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "defs.h"
32 #include <linux/ioctl.h>
33 #include "xlat/ioctl_dirs.h"
34
35 #ifdef HAVE_LINUX_INPUT_H
36 # include <linux/input.h>
37 #endif
38
39 #include "xlat/evdev_abs.h"
40 #include "xlat/evdev_ev.h"
41
42 static int
compare(const void * a,const void * b)43 compare(const void *a, const void *b)
44 {
45 const unsigned int code1 = (const unsigned long) a;
46 const unsigned int code2 = ((struct_ioctlent *) b)->code;
47 return (code1 > code2) ? 1 : (code1 < code2) ? -1 : 0;
48 }
49
50 const struct_ioctlent *
ioctl_lookup(const unsigned int code)51 ioctl_lookup(const unsigned int code)
52 {
53 struct_ioctlent *iop;
54
55 iop = bsearch((const void *) (const unsigned long) code, ioctlent,
56 nioctlents, sizeof(ioctlent[0]), compare);
57 while (iop > ioctlent) {
58 iop--;
59 if (iop->code != code) {
60 iop++;
61 break;
62 }
63 }
64 return iop;
65 }
66
67 const struct_ioctlent *
ioctl_next_match(const struct_ioctlent * iop)68 ioctl_next_match(const struct_ioctlent *iop)
69 {
70 const unsigned int code = iop->code;
71 iop++;
72 if (iop < ioctlent + nioctlents && iop->code == code)
73 return iop;
74 return NULL;
75 }
76
77 void
ioctl_print_code(const unsigned int code)78 ioctl_print_code(const unsigned int code)
79 {
80 tprints("_IOC(");
81 printflags(ioctl_dirs, _IOC_DIR(code), "_IOC_???");
82 tprintf(", 0x%02x, 0x%02x, 0x%02x)",
83 _IOC_TYPE(code), _IOC_NR(code), _IOC_SIZE(code));
84 }
85
86 static int
evdev_decode_number(unsigned int arg)87 evdev_decode_number(unsigned int arg)
88 {
89 unsigned int nr = _IOC_NR(arg);
90
91 if (_IOC_DIR(arg) == _IOC_WRITE) {
92 if (nr >= 0xc0 && nr <= 0xc0 + 0x3f) {
93 tprints("EVIOCSABS(");
94 printxval(evdev_abs, nr - 0xc0, "EV_???");
95 tprints(")");
96 return 1;
97 }
98 }
99
100 if (_IOC_DIR(arg) != _IOC_READ)
101 return 0;
102
103 if (nr >= 0x20 && nr <= 0x20 + 0x1f) {
104 tprints("EVIOCGBIT(");
105 printxval(evdev_ev, nr - 0x20, "EV_???");
106 tprintf(", %u)", _IOC_SIZE(arg));
107 return 1;
108 } else if (nr >= 0x40 && nr <= 0x40 + 0x3f) {
109 tprints("EVIOCGABS(");
110 printxval(evdev_abs, nr - 0x40, "ABS_???");
111 tprints(")");
112 return 1;
113 }
114
115 switch (_IOC_NR(nr)) {
116 case 0x06:
117 tprintf("EVIOCGNAME(%u)", _IOC_SIZE(arg));
118 return 1;
119 case 0x07:
120 tprintf("EVIOCGPHYS(%u)", _IOC_SIZE(arg));
121 return 1;
122 case 0x08:
123 tprintf("EVIOCGUNIQ(%u)", _IOC_SIZE(arg));
124 return 1;
125 case 0x09:
126 tprintf("EVIOCGPROP(%u)", _IOC_SIZE(arg));
127 return 1;
128 case 0x0a:
129 tprintf("EVIOCGMTSLOTS(%u)", _IOC_SIZE(arg));
130 return 1;
131 case 0x18:
132 tprintf("EVIOCGKEY(%u)", _IOC_SIZE(arg));
133 return 1;
134 case 0x19:
135 tprintf("EVIOCGLED(%u)", _IOC_SIZE(arg));
136 return 1;
137 case 0x1a:
138 tprintf("EVIOCGSND(%u)", _IOC_SIZE(arg));
139 return 1;
140 case 0x1b:
141 tprintf("EVIOCGSW(%u)", _IOC_SIZE(arg));
142 return 1;
143 default:
144 return 0;
145 }
146 }
147
148 static int
hiddev_decode_number(unsigned int arg)149 hiddev_decode_number(unsigned int arg)
150 {
151 if (_IOC_DIR(arg) == _IOC_READ) {
152 switch (_IOC_NR(arg)) {
153 case 0x04:
154 tprintf("HIDIOCGRAWNAME(%u)", _IOC_SIZE(arg));
155 return 1;
156 case 0x05:
157 tprintf("HIDIOCGRAWPHYS(%u)", _IOC_SIZE(arg));
158 return 1;
159 case 0x06:
160 tprintf("HIDIOCSFEATURE(%u)", _IOC_SIZE(arg));
161 return 1;
162 case 0x12:
163 tprintf("HIDIOCGPHYS(%u)", _IOC_SIZE(arg));
164 return 1;
165 default:
166 return 0;
167 }
168 } else if (_IOC_DIR(arg) == (_IOC_READ | _IOC_WRITE)) {
169 switch (_IOC_NR(arg)) {
170 case 0x06:
171 tprintf("HIDIOCSFEATURE(%u)", _IOC_SIZE(arg));
172 return 1;
173 case 0x07:
174 tprintf("HIDIOCGFEATURE(%u)", _IOC_SIZE(arg));
175 return 1;
176 default:
177 return 0;
178 }
179 }
180
181 return 0;
182 }
183
184 int
ioctl_decode_command_number(unsigned int arg)185 ioctl_decode_command_number(unsigned int arg)
186 {
187 switch (_IOC_TYPE(arg)) {
188 case 'E':
189 return evdev_decode_number(arg);
190 case 'H':
191 return hiddev_decode_number(arg);
192 case 'M':
193 if (_IOC_DIR(arg) == _IOC_WRITE) {
194 tprintf("MIXER_WRITE(%u)", _IOC_NR(arg));
195 return 1;
196 } else if (_IOC_DIR(arg) == _IOC_READ) {
197 tprintf("MIXER_READ(%u)", _IOC_NR(arg));
198 return 1;
199 }
200 return 0;
201 case 'U':
202 if (_IOC_DIR(arg) == _IOC_READ && _IOC_NR(arg) == 0x2c) {
203 tprintf("UI_GET_SYSNAME(%u)", _IOC_SIZE(arg));
204 return 1;
205 }
206 return 0;
207 case 'j':
208 if (_IOC_DIR(arg) == _IOC_READ && _IOC_NR(arg) == 0x13) {
209 tprintf("JSIOCGNAME(%u)", _IOC_SIZE(arg));
210 return 1;
211 }
212 return 0;
213 case 'k':
214 if (_IOC_DIR(arg) == _IOC_WRITE && _IOC_NR(arg) == 0) {
215 tprintf("SPI_IOC_MESSAGE(%u)", _IOC_SIZE(arg));
216 return 1;
217 }
218 return 0;
219 default:
220 return 0;
221 }
222 }
223
224 int
ioctl_decode(struct tcb * tcp,unsigned int code,long arg)225 ioctl_decode(struct tcb *tcp, unsigned int code, long arg)
226 {
227 switch (_IOC_TYPE(code)) {
228 #if defined(ALPHA) || defined(POWERPC)
229 case 'f': case 't': case 'T':
230 #else /* !ALPHA */
231 case 0x54:
232 #endif /* !ALPHA */
233 return term_ioctl(tcp, code, arg);
234 case 0x89:
235 return sock_ioctl(tcp, code, arg);
236 case 'p':
237 return rtc_ioctl(tcp, code, arg);
238 case 0x03:
239 case 0x12:
240 case 'X':
241 return block_ioctl(tcp, code, arg);
242 #ifdef HAVE_SCSI_SG_H
243 case 0x22:
244 return scsi_ioctl(tcp, code, arg);
245 #endif
246 case 'L':
247 return loop_ioctl(tcp, code, arg);
248 case 'M':
249 return mtd_ioctl(tcp, code, arg);
250 case 'o':
251 case 'O':
252 return ubi_ioctl(tcp, code, arg);
253 case 'V':
254 return v4l2_ioctl(tcp, code, arg);
255 case '=':
256 return ptp_ioctl(tcp, code, arg);
257 #ifdef HAVE_LINUX_INPUT_H
258 case 'E':
259 return evdev_ioctl(tcp, code, arg);
260 #endif
261 default:
262 break;
263 }
264 return 0;
265 }
266
267 /*
268 * Registry of ioctl characters, culled from
269 * @(#)ioccom.h 1.7 89/06/16 SMI; from UCB ioctl.h 7.1 6/4/86
270 *
271 * char file where defined notes
272 * ---- ------------------ -----
273 * F sun/fbio.h
274 * G sun/gpio.h
275 * H vaxif/if_hy.h
276 * M sundev/mcpcmd.h *overlap*
277 * M sys/modem.h *overlap*
278 * S sys/stropts.h
279 * T sys/termio.h -no overlap-
280 * T sys/termios.h -no overlap-
281 * V sundev/mdreg.h
282 * a vaxuba/adreg.h
283 * d sun/dkio.h -no overlap with sys/des.h-
284 * d sys/des.h (possible overlap)
285 * d vax/dkio.h (possible overlap)
286 * d vaxuba/rxreg.h (possible overlap)
287 * f sys/filio.h
288 * g sunwindow/win_ioctl.h -no overlap-
289 * g sunwindowdev/winioctl.c !no manifest constant! -no overlap-
290 * h sundev/hrc_common.h
291 * i sys/sockio.h *overlap*
292 * i vaxuba/ikreg.h *overlap*
293 * k sundev/kbio.h
294 * m sundev/msio.h (possible overlap)
295 * m sundev/msreg.h (possible overlap)
296 * m sys/mtio.h (possible overlap)
297 * n sun/ndio.h
298 * p net/nit_buf.h (possible overlap)
299 * p net/nit_if.h (possible overlap)
300 * p net/nit_pf.h (possible overlap)
301 * p sundev/fpareg.h (possible overlap)
302 * p sys/sockio.h (possible overlap)
303 * p vaxuba/psreg.h (possible overlap)
304 * q sun/sqz.h
305 * r sys/sockio.h
306 * s sys/sockio.h
307 * t sys/ttold.h (possible overlap)
308 * t sys/ttycom.h (possible overlap)
309 * v sundev/vuid_event.h *overlap*
310 * v sys/vcmd.h *overlap*
311 * V linux/videodev2.h
312 *
313 * End of Registry
314 */
315