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