1//===-- sanitizer_common_interceptors_ioctl.inc -----------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// Ioctl handling in common sanitizer interceptors.
10//===----------------------------------------------------------------------===//
11
12#if !SANITIZER_NETBSD
13
14#include "sanitizer_flags.h"
15
16struct ioctl_desc {
17 unsigned req;
18 // FIXME: support read+write arguments. Currently READWRITE and WRITE do the
19 // same thing.
20 // XXX: The declarations below may use WRITE instead of READWRITE, unless
21 // explicitly noted.
22 enum {
23 NONE,
24 READ,
25 WRITE,
26 READWRITE,
27 CUSTOM
28 } type : 3;
29 unsigned size : 29;
30 const char* name;
31};
32
33const unsigned ioctl_table_max = 500;
34static ioctl_desc ioctl_table[ioctl_table_max];
35static unsigned ioctl_table_size = 0;
36
37// This can not be declared as a global, because references to struct_*_sz
38// require a global initializer. And this table must be available before global
39// initializers are run.
40static void ioctl_table_fill() {
41#define _(rq, tp, sz) \
42 if (IOCTL_##rq != IOCTL_NOT_PRESENT) { \
43 CHECK(ioctl_table_size < ioctl_table_max); \
44 ioctl_table[ioctl_table_size].req = IOCTL_##rq; \
45 ioctl_table[ioctl_table_size].type = ioctl_desc::tp; \
46 ioctl_table[ioctl_table_size].size = sz; \
47 ioctl_table[ioctl_table_size].name = #rq; \
48 ++ioctl_table_size; \
49 }
50
51 _(FIONBIO, READ, sizeof(int));
52#if !SANITIZER_HAIKU
53 _(FIOASYNC, READ, sizeof(int));
54 _(FIOCLEX, NONE, 0);
55 _(FIOGETOWN, WRITE, sizeof(int));
56 _(FIONCLEX, NONE, 0);
57 _(FIOSETOWN, READ, sizeof(int));
58#endif
59 _(SIOCATMARK, WRITE, sizeof(int));
60 _(SIOCGIFCONF, CUSTOM, 0);
61 _(SIOCGPGRP, WRITE, sizeof(int));
62 _(SIOCSPGRP, READ, sizeof(int));
63#if !SANITIZER_SOLARIS && !SANITIZER_HAIKU
64 _(TIOCCONS, NONE, 0);
65#endif
66#if !SANITIZER_HAIKU
67 _(TIOCGETD, WRITE, sizeof(int));
68 _(TIOCNOTTY, NONE, 0);
69 _(TIOCPKT, READ, sizeof(int));
70 _(TIOCSETD, READ, sizeof(int));
71 _(TIOCSTI, READ, sizeof(char));
72#endif
73 _(TIOCEXCL, NONE, 0);
74 _(TIOCGPGRP, WRITE, pid_t_sz);
75 _(TIOCGWINSZ, WRITE, struct_winsize_sz);
76 _(TIOCMBIC, READ, sizeof(int));
77 _(TIOCMBIS, READ, sizeof(int));
78 _(TIOCMGET, WRITE, sizeof(int));
79 _(TIOCMSET, READ, sizeof(int));
80 _(TIOCNXCL, NONE, 0);
81 _(TIOCOUTQ, WRITE, sizeof(int));
82# if !SANITIZER_AIX
83 _(TIOCSCTTY, NONE, 0);
84# endif
85 _(TIOCSPGRP, READ, pid_t_sz);
86 _(TIOCSWINSZ, READ, struct_winsize_sz);
87
88#if !SANITIZER_IOS
89 _(SIOCADDMULTI, READ, struct_ifreq_sz);
90 _(SIOCDELMULTI, READ, struct_ifreq_sz);
91 _(SIOCGIFADDR, WRITE, struct_ifreq_sz);
92 _(SIOCGIFBRDADDR, WRITE, struct_ifreq_sz);
93 _(SIOCGIFDSTADDR, WRITE, struct_ifreq_sz);
94 _(SIOCGIFFLAGS, WRITE, struct_ifreq_sz);
95 _(SIOCGIFMETRIC, WRITE, struct_ifreq_sz);
96 _(SIOCGIFMTU, WRITE, struct_ifreq_sz);
97 _(SIOCGIFNETMASK, WRITE, struct_ifreq_sz);
98 _(SIOCSIFADDR, READ, struct_ifreq_sz);
99 _(SIOCSIFBRDADDR, READ, struct_ifreq_sz);
100 _(SIOCSIFDSTADDR, READ, struct_ifreq_sz);
101 _(SIOCSIFFLAGS, READ, struct_ifreq_sz);
102 _(SIOCSIFMETRIC, READ, struct_ifreq_sz);
103 _(SIOCSIFMTU, READ, struct_ifreq_sz);
104 _(SIOCSIFNETMASK, READ, struct_ifreq_sz);
105#endif
106
107#if (SANITIZER_LINUX && !SANITIZER_ANDROID)
108 _(SIOCGETSGCNT, WRITE, struct_sioc_sg_req_sz);
109 _(SIOCGETVIFCNT, WRITE, struct_sioc_vif_req_sz);
110#endif
111
112#if SANITIZER_LINUX
113 // Conflicting request ids.
114 // _(CDROMAUDIOBUFSIZ, NONE, 0);
115 // _(SNDCTL_TMR_CONTINUE, NONE, 0);
116 // _(SNDCTL_TMR_START, NONE, 0);
117 // _(SNDCTL_TMR_STOP, NONE, 0);
118 // _(SOUND_MIXER_READ_LOUD, WRITE, sizeof(int)); // same as ...READ_ENHANCE
119 // _(SOUND_MIXER_READ_MUTE, WRITE, sizeof(int)); // same as ...READ_ENHANCE
120 // _(SOUND_MIXER_WRITE_LOUD, WRITE, sizeof(int)); // same as ...WRITE_ENHANCE
121 // _(SOUND_MIXER_WRITE_MUTE, WRITE, sizeof(int)); // same as ...WRITE_ENHANCE
122 _(BLKFLSBUF, NONE, 0);
123 _(BLKGETSIZE, WRITE, sizeof(uptr));
124 _(BLKRAGET, WRITE, sizeof(uptr));
125 _(BLKRASET, NONE, 0);
126 _(BLKROGET, WRITE, sizeof(int));
127 _(BLKROSET, READ, sizeof(int));
128 _(BLKRRPART, NONE, 0);
129 _(BLKFRASET, NONE, 0);
130 _(BLKFRAGET, WRITE, sizeof(uptr));
131 _(BLKSECTSET, READ, sizeof(short));
132 _(BLKSECTGET, WRITE, sizeof(short));
133 _(BLKSSZGET, WRITE, sizeof(int));
134 _(BLKBSZGET, WRITE, sizeof(int));
135 _(BLKBSZSET, READ, sizeof(uptr));
136 _(BLKGETSIZE64, WRITE, sizeof(u64));
137 _(CDROMEJECT, NONE, 0);
138 _(CDROMEJECT_SW, NONE, 0);
139 _(CDROMMULTISESSION, WRITE, struct_cdrom_multisession_sz);
140 _(CDROMPAUSE, NONE, 0);
141 _(CDROMPLAYMSF, READ, struct_cdrom_msf_sz);
142 _(CDROMPLAYTRKIND, READ, struct_cdrom_ti_sz);
143 _(CDROMREADAUDIO, READ, struct_cdrom_read_audio_sz);
144 _(CDROMREADCOOKED, READ, struct_cdrom_msf_sz);
145 _(CDROMREADMODE1, READ, struct_cdrom_msf_sz);
146 _(CDROMREADMODE2, READ, struct_cdrom_msf_sz);
147 _(CDROMREADRAW, READ, struct_cdrom_msf_sz);
148 _(CDROMREADTOCENTRY, WRITE, struct_cdrom_tocentry_sz);
149 _(CDROMREADTOCHDR, WRITE, struct_cdrom_tochdr_sz);
150 _(CDROMRESET, NONE, 0);
151 _(CDROMRESUME, NONE, 0);
152 _(CDROMSEEK, READ, struct_cdrom_msf_sz);
153 _(CDROMSTART, NONE, 0);
154 _(CDROMSTOP, NONE, 0);
155 _(CDROMSUBCHNL, WRITE, struct_cdrom_subchnl_sz);
156 _(CDROMVOLCTRL, READ, struct_cdrom_volctrl_sz);
157 _(CDROMVOLREAD, WRITE, struct_cdrom_volctrl_sz);
158 _(CDROM_GET_UPC, WRITE, 8);
159 _(EVIOCGABS, WRITE, struct_input_absinfo_sz); // fixup
160 _(EVIOCGBIT, WRITE, struct_input_id_sz); // fixup
161 _(EVIOCGEFFECTS, WRITE, sizeof(int));
162 _(EVIOCGID, WRITE, struct_input_id_sz);
163 _(EVIOCGKEY, WRITE, 0);
164 _(EVIOCGKEYCODE, WRITE, sizeof(int) * 2);
165 _(EVIOCGLED, WRITE, 0);
166 _(EVIOCGNAME, WRITE, 0);
167 _(EVIOCGPHYS, WRITE, 0);
168 _(EVIOCGRAB, READ, sizeof(int));
169 _(EVIOCGREP, WRITE, sizeof(int) * 2);
170 _(EVIOCGSND, WRITE, 0);
171 _(EVIOCGSW, WRITE, 0);
172 _(EVIOCGUNIQ, WRITE, 0);
173 _(EVIOCGVERSION, WRITE, sizeof(int));
174 _(EVIOCRMFF, READ, sizeof(int));
175 _(EVIOCSABS, READ, struct_input_absinfo_sz); // fixup
176 _(EVIOCSFF, READ, struct_ff_effect_sz);
177 _(EVIOCSKEYCODE, READ, sizeof(int) * 2);
178 _(EVIOCSREP, READ, sizeof(int) * 2);
179 _(FDCLRPRM, NONE, 0);
180 _(FDDEFPRM, READ, struct_floppy_struct_sz);
181 _(FDFLUSH, NONE, 0);
182 _(FDFMTBEG, NONE, 0);
183 _(FDFMTEND, NONE, 0);
184 _(FDFMTTRK, READ, struct_format_descr_sz);
185 _(FDGETDRVPRM, WRITE, struct_floppy_drive_params_sz);
186 _(FDGETDRVSTAT, WRITE, struct_floppy_drive_struct_sz);
187 _(FDGETDRVTYP, WRITE, 16);
188 _(FDGETFDCSTAT, WRITE, struct_floppy_fdc_state_sz);
189 _(FDGETMAXERRS, WRITE, struct_floppy_max_errors_sz);
190 _(FDGETPRM, WRITE, struct_floppy_struct_sz);
191 _(FDMSGOFF, NONE, 0);
192 _(FDMSGON, NONE, 0);
193 _(FDPOLLDRVSTAT, WRITE, struct_floppy_drive_struct_sz);
194 _(FDRAWCMD, WRITE, struct_floppy_raw_cmd_sz);
195 _(FDRESET, NONE, 0);
196 _(FDSETDRVPRM, READ, struct_floppy_drive_params_sz);
197 _(FDSETEMSGTRESH, NONE, 0);
198 _(FDSETMAXERRS, READ, struct_floppy_max_errors_sz);
199 _(FDSETPRM, READ, struct_floppy_struct_sz);
200 _(FDTWADDLE, NONE, 0);
201 _(FDWERRORCLR, NONE, 0);
202 _(FDWERRORGET, WRITE, struct_floppy_write_errors_sz);
203 _(HDIO_DRIVE_CMD, WRITE, sizeof(int));
204 _(HDIO_GETGEO, WRITE, struct_hd_geometry_sz);
205 _(HDIO_GET_32BIT, WRITE, sizeof(int));
206 _(HDIO_GET_DMA, WRITE, sizeof(int));
207 _(HDIO_GET_IDENTITY, WRITE, struct_hd_driveid_sz);
208 _(HDIO_GET_KEEPSETTINGS, WRITE, sizeof(int));
209 _(HDIO_GET_MULTCOUNT, WRITE, sizeof(int));
210 _(HDIO_GET_NOWERR, WRITE, sizeof(int));
211 _(HDIO_GET_UNMASKINTR, WRITE, sizeof(int));
212 _(HDIO_SET_32BIT, NONE, 0);
213 _(HDIO_SET_DMA, NONE, 0);
214 _(HDIO_SET_KEEPSETTINGS, NONE, 0);
215 _(HDIO_SET_MULTCOUNT, NONE, 0);
216 _(HDIO_SET_NOWERR, NONE, 0);
217 _(HDIO_SET_UNMASKINTR, NONE, 0);
218 _(MTIOCGET, WRITE, struct_mtget_sz);
219 _(MTIOCPOS, WRITE, struct_mtpos_sz);
220 _(MTIOCTOP, READ, struct_mtop_sz);
221 _(PPPIOCGASYNCMAP, WRITE, sizeof(int));
222 _(PPPIOCGDEBUG, WRITE, sizeof(int));
223 _(PPPIOCGFLAGS, WRITE, sizeof(int));
224 _(PPPIOCGUNIT, WRITE, sizeof(int));
225 _(PPPIOCGXASYNCMAP, WRITE, sizeof(int) * 8);
226 _(PPPIOCSASYNCMAP, READ, sizeof(int));
227 _(PPPIOCSDEBUG, READ, sizeof(int));
228 _(PPPIOCSFLAGS, READ, sizeof(int));
229 _(PPPIOCSMAXCID, READ, sizeof(int));
230 _(PPPIOCSMRU, READ, sizeof(int));
231 _(PPPIOCSXASYNCMAP, READ, sizeof(int) * 8);
232 _(SIOCADDRT, READ, struct_rtentry_sz);
233 _(SIOCDARP, READ, struct_arpreq_sz);
234 _(SIOCDELRT, READ, struct_rtentry_sz);
235 _(SIOCDRARP, READ, struct_arpreq_sz);
236 _(SIOCGARP, WRITE, struct_arpreq_sz);
237 _(SIOCGIFENCAP, WRITE, sizeof(int));
238 _(SIOCGIFHWADDR, WRITE, struct_ifreq_sz);
239 _(SIOCGIFMAP, WRITE, struct_ifreq_sz);
240 _(SIOCGIFMEM, WRITE, struct_ifreq_sz);
241 _(SIOCGIFNAME, NONE, 0);
242 _(SIOCGIFSLAVE, NONE, 0);
243 _(SIOCGRARP, WRITE, struct_arpreq_sz);
244 _(SIOCGSTAMP, WRITE, timeval_sz);
245 _(SIOCSARP, READ, struct_arpreq_sz);
246 _(SIOCSIFENCAP, READ, sizeof(int));
247 _(SIOCSIFHWADDR, READ, struct_ifreq_sz);
248 _(SIOCSIFLINK, NONE, 0);
249 _(SIOCSIFMAP, READ, struct_ifreq_sz);
250 _(SIOCSIFMEM, READ, struct_ifreq_sz);
251 _(SIOCSIFSLAVE, NONE, 0);
252 _(SIOCSRARP, READ, struct_arpreq_sz);
253 _(SNDCTL_COPR_HALT, WRITE, struct_copr_debug_buf_sz);
254 _(SNDCTL_COPR_LOAD, READ, struct_copr_buffer_sz);
255 _(SNDCTL_COPR_RCODE, WRITE, struct_copr_debug_buf_sz);
256 _(SNDCTL_COPR_RCVMSG, WRITE, struct_copr_msg_sz);
257 _(SNDCTL_COPR_RDATA, WRITE, struct_copr_debug_buf_sz);
258 _(SNDCTL_COPR_RESET, NONE, 0);
259 _(SNDCTL_COPR_RUN, WRITE, struct_copr_debug_buf_sz);
260 _(SNDCTL_COPR_SENDMSG, READ, struct_copr_msg_sz);
261 _(SNDCTL_COPR_WCODE, READ, struct_copr_debug_buf_sz);
262 _(SNDCTL_COPR_WDATA, READ, struct_copr_debug_buf_sz);
263 _(SNDCTL_DSP_GETBLKSIZE, WRITE, sizeof(int));
264 _(SNDCTL_DSP_GETFMTS, WRITE, sizeof(int));
265 _(SNDCTL_DSP_NONBLOCK, NONE, 0);
266 _(SNDCTL_DSP_POST, NONE, 0);
267 _(SNDCTL_DSP_RESET, NONE, 0);
268 _(SNDCTL_DSP_SETFMT, WRITE, sizeof(int));
269 _(SNDCTL_DSP_SETFRAGMENT, WRITE, sizeof(int));
270 _(SNDCTL_DSP_SPEED, WRITE, sizeof(int));
271 _(SNDCTL_DSP_STEREO, WRITE, sizeof(int));
272 _(SNDCTL_DSP_SUBDIVIDE, WRITE, sizeof(int));
273 _(SNDCTL_DSP_SYNC, NONE, 0);
274 _(SNDCTL_FM_4OP_ENABLE, READ, sizeof(int));
275 _(SNDCTL_FM_LOAD_INSTR, READ, struct_sbi_instrument_sz);
276 _(SNDCTL_MIDI_INFO, WRITE, struct_midi_info_sz);
277 _(SNDCTL_MIDI_PRETIME, WRITE, sizeof(int));
278 _(SNDCTL_SEQ_CTRLRATE, WRITE, sizeof(int));
279 _(SNDCTL_SEQ_GETINCOUNT, WRITE, sizeof(int));
280 _(SNDCTL_SEQ_GETOUTCOUNT, WRITE, sizeof(int));
281 _(SNDCTL_SEQ_NRMIDIS, WRITE, sizeof(int));
282 _(SNDCTL_SEQ_NRSYNTHS, WRITE, sizeof(int));
283 _(SNDCTL_SEQ_OUTOFBAND, READ, struct_seq_event_rec_sz);
284 _(SNDCTL_SEQ_PANIC, NONE, 0);
285 _(SNDCTL_SEQ_PERCMODE, NONE, 0);
286 _(SNDCTL_SEQ_RESET, NONE, 0);
287 _(SNDCTL_SEQ_RESETSAMPLES, READ, sizeof(int));
288 _(SNDCTL_SEQ_SYNC, NONE, 0);
289 _(SNDCTL_SEQ_TESTMIDI, READ, sizeof(int));
290 _(SNDCTL_SEQ_THRESHOLD, READ, sizeof(int));
291 _(SNDCTL_SYNTH_INFO, WRITE, struct_synth_info_sz);
292 _(SNDCTL_SYNTH_MEMAVL, WRITE, sizeof(int));
293 _(SNDCTL_TMR_METRONOME, READ, sizeof(int));
294 _(SNDCTL_TMR_SELECT, WRITE, sizeof(int));
295 _(SNDCTL_TMR_SOURCE, WRITE, sizeof(int));
296 _(SNDCTL_TMR_TEMPO, WRITE, sizeof(int));
297 _(SNDCTL_TMR_TIMEBASE, WRITE, sizeof(int));
298 _(SOUND_MIXER_READ_ALTPCM, WRITE, sizeof(int));
299 _(SOUND_MIXER_READ_BASS, WRITE, sizeof(int));
300 _(SOUND_MIXER_READ_CAPS, WRITE, sizeof(int));
301 _(SOUND_MIXER_READ_CD, WRITE, sizeof(int));
302 _(SOUND_MIXER_READ_DEVMASK, WRITE, sizeof(int));
303 _(SOUND_MIXER_READ_ENHANCE, WRITE, sizeof(int));
304 _(SOUND_MIXER_READ_IGAIN, WRITE, sizeof(int));
305 _(SOUND_MIXER_READ_IMIX, WRITE, sizeof(int));
306 _(SOUND_MIXER_READ_LINE, WRITE, sizeof(int));
307 _(SOUND_MIXER_READ_LINE1, WRITE, sizeof(int));
308 _(SOUND_MIXER_READ_LINE2, WRITE, sizeof(int));
309 _(SOUND_MIXER_READ_LINE3, WRITE, sizeof(int));
310 _(SOUND_MIXER_READ_MIC, WRITE, sizeof(int));
311 _(SOUND_MIXER_READ_OGAIN, WRITE, sizeof(int));
312 _(SOUND_MIXER_READ_PCM, WRITE, sizeof(int));
313 _(SOUND_MIXER_READ_RECLEV, WRITE, sizeof(int));
314 _(SOUND_MIXER_READ_RECMASK, WRITE, sizeof(int));
315 _(SOUND_MIXER_READ_RECSRC, WRITE, sizeof(int));
316 _(SOUND_MIXER_READ_SPEAKER, WRITE, sizeof(int));
317 _(SOUND_MIXER_READ_STEREODEVS, WRITE, sizeof(int));
318 _(SOUND_MIXER_READ_SYNTH, WRITE, sizeof(int));
319 _(SOUND_MIXER_READ_TREBLE, WRITE, sizeof(int));
320 _(SOUND_MIXER_READ_VOLUME, WRITE, sizeof(int));
321 _(SOUND_MIXER_WRITE_ALTPCM, WRITE, sizeof(int));
322 _(SOUND_MIXER_WRITE_BASS, WRITE, sizeof(int));
323 _(SOUND_MIXER_WRITE_CD, WRITE, sizeof(int));
324 _(SOUND_MIXER_WRITE_ENHANCE, WRITE, sizeof(int));
325 _(SOUND_MIXER_WRITE_IGAIN, WRITE, sizeof(int));
326 _(SOUND_MIXER_WRITE_IMIX, WRITE, sizeof(int));
327 _(SOUND_MIXER_WRITE_LINE, WRITE, sizeof(int));
328 _(SOUND_MIXER_WRITE_LINE1, WRITE, sizeof(int));
329 _(SOUND_MIXER_WRITE_LINE2, WRITE, sizeof(int));
330 _(SOUND_MIXER_WRITE_LINE3, WRITE, sizeof(int));
331 _(SOUND_MIXER_WRITE_MIC, WRITE, sizeof(int));
332 _(SOUND_MIXER_WRITE_OGAIN, WRITE, sizeof(int));
333 _(SOUND_MIXER_WRITE_PCM, WRITE, sizeof(int));
334 _(SOUND_MIXER_WRITE_RECLEV, WRITE, sizeof(int));
335 _(SOUND_MIXER_WRITE_RECSRC, WRITE, sizeof(int));
336 _(SOUND_MIXER_WRITE_SPEAKER, WRITE, sizeof(int));
337 _(SOUND_MIXER_WRITE_SYNTH, WRITE, sizeof(int));
338 _(SOUND_MIXER_WRITE_TREBLE, WRITE, sizeof(int));
339 _(SOUND_MIXER_WRITE_VOLUME, WRITE, sizeof(int));
340 _(SOUND_PCM_READ_BITS, WRITE, sizeof(int));
341 _(SOUND_PCM_READ_CHANNELS, WRITE, sizeof(int));
342 _(SOUND_PCM_READ_FILTER, WRITE, sizeof(int));
343 _(SOUND_PCM_READ_RATE, WRITE, sizeof(int));
344 _(SOUND_PCM_WRITE_CHANNELS, WRITE, sizeof(int));
345 _(SOUND_PCM_WRITE_FILTER, WRITE, sizeof(int));
346 _(TCFLSH, NONE, 0);
347 _(TCGETS, WRITE, struct_termios_sz);
348 _(TCSBRK, NONE, 0);
349 _(TCSBRKP, NONE, 0);
350 _(TCSETS, READ, struct_termios_sz);
351 _(TCSETSF, READ, struct_termios_sz);
352 _(TCSETSW, READ, struct_termios_sz);
353 _(TCXONC, NONE, 0);
354 _(TIOCGLCKTRMIOS, WRITE, struct_termios_sz);
355 _(TIOCGSOFTCAR, WRITE, sizeof(int));
356 _(TIOCINQ, WRITE, sizeof(int));
357 _(TIOCLINUX, READ, sizeof(char));
358 _(TIOCSERCONFIG, NONE, 0);
359 _(TIOCSERGETLSR, WRITE, sizeof(int));
360 _(TIOCSERGWILD, WRITE, sizeof(int));
361 _(TIOCSERSWILD, READ, sizeof(int));
362 _(TIOCSLCKTRMIOS, READ, struct_termios_sz);
363 _(TIOCSSOFTCAR, READ, sizeof(int));
364 _(VT_ACTIVATE, NONE, 0);
365 _(VT_DISALLOCATE, NONE, 0);
366 _(VT_GETMODE, WRITE, struct_vt_mode_sz);
367 _(VT_GETSTATE, WRITE, struct_vt_stat_sz);
368 _(VT_OPENQRY, WRITE, sizeof(int));
369 _(VT_RELDISP, NONE, 0);
370 _(VT_RESIZE, READ, struct_vt_sizes_sz);
371 _(VT_RESIZEX, READ, struct_vt_consize_sz);
372 _(VT_SENDSIG, NONE, 0);
373 _(VT_SETMODE, READ, struct_vt_mode_sz);
374 _(VT_WAITACTIVE, NONE, 0);
375#endif
376
377#if SANITIZER_GLIBC
378 // _(SIOCDEVPLIP, WRITE, struct_ifreq_sz); // the same as EQL_ENSLAVE
379 _(EQL_EMANCIPATE, WRITE, struct_ifreq_sz);
380 _(EQL_ENSLAVE, WRITE, struct_ifreq_sz);
381 _(EQL_GETMASTRCFG, WRITE, struct_ifreq_sz);
382 _(EQL_GETSLAVECFG, WRITE, struct_ifreq_sz);
383 _(EQL_SETMASTRCFG, WRITE, struct_ifreq_sz);
384 _(EQL_SETSLAVECFG, WRITE, struct_ifreq_sz);
385 _(EVIOCGKEYCODE_V2, WRITE, struct_input_keymap_entry_sz);
386 _(EVIOCGPROP, WRITE, 0);
387 _(EVIOCSKEYCODE_V2, READ, struct_input_keymap_entry_sz);
388 _(FS_IOC_GETFLAGS, WRITE, sizeof(int));
389 _(FS_IOC_GETVERSION, WRITE, sizeof(int));
390 _(FS_IOC_SETFLAGS, READ, sizeof(int));
391 _(FS_IOC_SETVERSION, READ, sizeof(int));
392 _(GIO_CMAP, WRITE, 48);
393 _(GIO_FONT, WRITE, 8192);
394 _(GIO_SCRNMAP, WRITE, e_tabsz);
395 _(GIO_UNIMAP, WRITE, struct_unimapdesc_sz);
396 _(GIO_UNISCRNMAP, WRITE, sizeof(short) * e_tabsz);
397 _(KDADDIO, NONE, 0);
398 _(KDDELIO, NONE, 0);
399 _(KDDISABIO, NONE, 0);
400 _(KDENABIO, NONE, 0);
401 _(KDGETKEYCODE, WRITE, struct_kbkeycode_sz);
402 _(KDGETLED, WRITE, 1);
403 _(KDGETMODE, WRITE, sizeof(int));
404 _(KDGKBDIACR, WRITE, struct_kbdiacrs_sz);
405 _(KDGKBENT, WRITE, struct_kbentry_sz);
406 _(KDGKBLED, WRITE, sizeof(int));
407 _(KDGKBMETA, WRITE, sizeof(int));
408 _(KDGKBMODE, WRITE, sizeof(int));
409 _(KDGKBSENT, WRITE, struct_kbsentry_sz);
410 _(KDGKBTYPE, WRITE, 1);
411 _(KDMAPDISP, NONE, 0);
412 _(KDMKTONE, NONE, 0);
413 _(KDSETKEYCODE, READ, struct_kbkeycode_sz);
414 _(KDSETLED, NONE, 0);
415 _(KDSETMODE, NONE, 0);
416 _(KDSIGACCEPT, NONE, 0);
417 _(KDSKBDIACR, READ, struct_kbdiacrs_sz);
418 _(KDSKBENT, READ, struct_kbentry_sz);
419 _(KDSKBLED, NONE, 0);
420 _(KDSKBMETA, NONE, 0);
421 _(KDSKBMODE, NONE, 0);
422 _(KDSKBSENT, READ, struct_kbsentry_sz);
423 _(KDUNMAPDISP, NONE, 0);
424 _(KIOCSOUND, NONE, 0);
425 _(LPABORT, NONE, 0);
426 _(LPABORTOPEN, NONE, 0);
427 _(LPCAREFUL, NONE, 0);
428 _(LPCHAR, NONE, 0);
429 _(LPGETIRQ, WRITE, sizeof(int));
430 _(LPGETSTATUS, WRITE, sizeof(int));
431 _(LPRESET, NONE, 0);
432 _(LPSETIRQ, NONE, 0);
433 _(LPTIME, NONE, 0);
434 _(LPWAIT, NONE, 0);
435 _(MTIOCGETCONFIG, WRITE, struct_mtconfiginfo_sz);
436 _(MTIOCSETCONFIG, READ, struct_mtconfiginfo_sz);
437 _(PIO_CMAP, NONE, 0);
438 _(PIO_FONT, READ, 8192);
439 _(PIO_SCRNMAP, READ, e_tabsz);
440 _(PIO_UNIMAP, READ, struct_unimapdesc_sz);
441 _(PIO_UNIMAPCLR, READ, struct_unimapinit_sz);
442 _(PIO_UNISCRNMAP, READ, sizeof(short) * e_tabsz);
443 _(SCSI_IOCTL_PROBE_HOST, READ, sizeof(int));
444 _(SCSI_IOCTL_TAGGED_DISABLE, NONE, 0);
445 _(SCSI_IOCTL_TAGGED_ENABLE, NONE, 0);
446 _(SNDCTL_DSP_GETISPACE, WRITE, struct_audio_buf_info_sz);
447 _(SNDCTL_DSP_GETOSPACE, WRITE, struct_audio_buf_info_sz);
448 _(TIOCGSERIAL, WRITE, struct_serial_struct_sz);
449 _(TIOCSERGETMULTI, WRITE, struct_serial_multiport_struct_sz);
450 _(TIOCSERSETMULTI, READ, struct_serial_multiport_struct_sz);
451 _(TIOCSSERIAL, READ, struct_serial_struct_sz);
452
453 // The following ioctl requests are shared between AX25, IPX, netrom and
454 // mrouted.
455 // _(SIOCAIPXITFCRT, READ, sizeof(char));
456 // _(SIOCAX25GETUID, READ, struct_sockaddr_ax25_sz);
457 // _(SIOCNRGETPARMS, WRITE, struct_nr_parms_struct_sz);
458 // _(SIOCAIPXPRISLT, READ, sizeof(char));
459 // _(SIOCNRSETPARMS, READ, struct_nr_parms_struct_sz);
460 // _(SIOCAX25ADDUID, READ, struct_sockaddr_ax25_sz);
461 // _(SIOCNRDECOBS, NONE, 0);
462 // _(SIOCAX25DELUID, READ, struct_sockaddr_ax25_sz);
463 // _(SIOCIPXCFGDATA, WRITE, struct_ipx_config_data_sz);
464 // _(SIOCAX25NOUID, READ, sizeof(int));
465 // _(SIOCNRRTCTL, READ, sizeof(int));
466 // _(SIOCAX25DIGCTL, READ, sizeof(int));
467 // _(SIOCAX25GETPARMS, WRITE, struct_ax25_parms_struct_sz);
468 // _(SIOCAX25SETPARMS, READ, struct_ax25_parms_struct_sz);
469#endif
470#undef _
471}
472
473static bool ioctl_initialized = false;
474
475struct ioctl_desc_compare {
476 bool operator()(const ioctl_desc& left, const ioctl_desc& right) const {
477 return left.req < right.req;
478 }
479};
480
481static void ioctl_init() {
482 ioctl_table_fill();
483 Sort(v: ioctl_table, size: ioctl_table_size, comp: ioctl_desc_compare());
484
485 bool bad = false;
486 for (unsigned i = 0; i < ioctl_table_size - 1; ++i) {
487 if (ioctl_table[i].req >= ioctl_table[i + 1].req) {
488 Printf(format: "Duplicate or unsorted ioctl request id %x >= %x (%s vs %s)\n",
489 ioctl_table[i].req, ioctl_table[i + 1].req, ioctl_table[i].name,
490 ioctl_table[i + 1].name);
491 bad = true;
492 }
493 }
494
495 if (bad) Die();
496
497 ioctl_initialized = true;
498}
499
500// Handle the most evil ioctls that encode argument value as part of request id.
501static unsigned ioctl_request_fixup(unsigned req) {
502#if SANITIZER_LINUX
503 // Strip size and event number.
504 const unsigned kEviocgbitMask =
505 (IOC_SIZEMASK << IOC_SIZESHIFT) | EVIOC_EV_MAX;
506 if ((req & ~kEviocgbitMask) == IOCTL_EVIOCGBIT)
507 return IOCTL_EVIOCGBIT;
508 // Strip absolute axis number.
509 if ((req & ~EVIOC_ABS_MAX) == IOCTL_EVIOCGABS)
510 return IOCTL_EVIOCGABS;
511 if ((req & ~EVIOC_ABS_MAX) == IOCTL_EVIOCSABS)
512 return IOCTL_EVIOCSABS;
513#endif
514 return req;
515}
516
517static const ioctl_desc *ioctl_table_lookup(unsigned req) {
518 int left = 0;
519 int right = ioctl_table_size;
520 while (left < right) {
521 int mid = (left + right) / 2;
522 if (ioctl_table[mid].req < req)
523 left = mid + 1;
524 else
525 right = mid;
526 }
527 if (left == right && ioctl_table[left].req == req)
528 return ioctl_table + left;
529 else
530 return nullptr;
531}
532
533static bool ioctl_decode(unsigned req, ioctl_desc *desc) {
534 CHECK(desc);
535 desc->req = req;
536 desc->name = "<DECODED_IOCTL>";
537 desc->size = IOC_SIZE(req);
538 // Sanity check.
539 if (desc->size > 0xFFFF) return false;
540 unsigned dir = IOC_DIR(req);
541 switch (dir) {
542 case IOC_NONE:
543 desc->type = ioctl_desc::NONE;
544 break;
545 case IOC_READ | IOC_WRITE:
546 desc->type = ioctl_desc::READWRITE;
547 break;
548 case IOC_READ:
549 desc->type = ioctl_desc::WRITE;
550 break;
551 case IOC_WRITE:
552 desc->type = ioctl_desc::READ;
553 break;
554 default:
555 return false;
556 }
557 // Size can be 0 iff type is NONE.
558 if ((desc->type == IOC_NONE) != (desc->size == 0)) return false;
559 // Sanity check.
560 if (IOC_TYPE(req) == 0) return false;
561 return true;
562}
563
564static const ioctl_desc *ioctl_lookup(unsigned req) {
565 req = ioctl_request_fixup(req);
566 const ioctl_desc *desc = ioctl_table_lookup(req);
567 if (desc) return desc;
568
569 // Try stripping access size from the request id.
570 desc = ioctl_table_lookup(req: req & ~(IOC_SIZEMASK << IOC_SIZESHIFT));
571 // Sanity check: requests that encode access size are either read or write and
572 // have size of 0 in the table.
573 if (desc && desc->size == 0 &&
574 (desc->type == ioctl_desc::READWRITE || desc->type == ioctl_desc::WRITE ||
575 desc->type == ioctl_desc::READ))
576 return desc;
577 return nullptr;
578}
579
580static void ioctl_common_pre(void *ctx, const ioctl_desc *desc, int d,
581 unsigned request, void *arg) {
582 if (desc->type == ioctl_desc::READ || desc->type == ioctl_desc::READWRITE) {
583 unsigned size = desc->size ? desc->size : IOC_SIZE(request);
584 COMMON_INTERCEPTOR_READ_RANGE(ctx, arg, size);
585 }
586 if (desc->type != ioctl_desc::CUSTOM)
587 return;
588 if (request == IOCTL_SIOCGIFCONF) {
589 struct __sanitizer_ifconf *ifc = (__sanitizer_ifconf *)arg;
590 COMMON_INTERCEPTOR_READ_RANGE(ctx, (char*)&ifc->ifc_len,
591 sizeof(ifc->ifc_len));
592 }
593}
594
595static void ioctl_common_post(void *ctx, const ioctl_desc *desc, int res, int d,
596 unsigned request, void *arg) {
597 if (desc->type == ioctl_desc::WRITE || desc->type == ioctl_desc::READWRITE) {
598 // FIXME: add verbose output
599 unsigned size = desc->size ? desc->size : IOC_SIZE(request);
600 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, arg, size);
601 }
602 if (desc->type != ioctl_desc::CUSTOM)
603 return;
604 if (request == IOCTL_SIOCGIFCONF) {
605 struct __sanitizer_ifconf *ifc = (__sanitizer_ifconf *)arg;
606 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ifc->ifc_ifcu.ifcu_req, ifc->ifc_len);
607 }
608}
609
610#endif
611