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