1//===-- sanitizer_common_interceptors_ioctl.inc -----------------*- C++ -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// Ioctl handling in common sanitizer interceptors. 11//===----------------------------------------------------------------------===// 12 13#if !SANITIZER_NETBSD 14 15#include "sanitizer_flags.h" 16 17struct ioctl_desc { 18 unsigned req; 19 // FIXME: support read+write arguments. Currently READWRITE and WRITE do the 20 // same thing. 21 // XXX: The declarations below may use WRITE instead of READWRITE, unless 22 // explicitly noted. 23 enum { 24 NONE, 25 READ, 26 WRITE, 27 READWRITE, 28 CUSTOM 29 } type : 3; 30 unsigned size : 29; 31 const char* name; 32}; 33 34const unsigned ioctl_table_max = 500; 35static ioctl_desc ioctl_table[ioctl_table_max]; 36static unsigned ioctl_table_size = 0; 37 38// This can not be declared as a global, because references to struct_*_sz 39// require a global initializer. And this table must be available before global 40// initializers are run. 41static void ioctl_table_fill() { 42#define _(rq, tp, sz) \ 43 if (IOCTL_##rq != IOCTL_NOT_PRESENT) { \ 44 CHECK(ioctl_table_size < ioctl_table_max); \ 45 ioctl_table[ioctl_table_size].req = IOCTL_##rq; \ 46 ioctl_table[ioctl_table_size].type = ioctl_desc::tp; \ 47 ioctl_table[ioctl_table_size].size = sz; \ 48 ioctl_table[ioctl_table_size].name = #rq; \ 49 ++ioctl_table_size; \ 50 } 51 52 _(FIOASYNC, READ, sizeof(int)); 53 _(FIOCLEX, NONE, 0); 54 _(FIOGETOWN, WRITE, sizeof(int)); 55 _(FIONBIO, READ, sizeof(int)); 56 _(FIONCLEX, NONE, 0); 57 _(FIOSETOWN, READ, sizeof(int)); 58 _(SIOCATMARK, WRITE, sizeof(int)); 59 _(SIOCGIFCONF, CUSTOM, 0); 60 _(SIOCGPGRP, WRITE, sizeof(int)); 61 _(SIOCSPGRP, READ, sizeof(int)); 62#if !SANITIZER_SOLARIS 63 _(TIOCCONS, NONE, 0); 64#endif 65 _(TIOCEXCL, NONE, 0); 66 _(TIOCGETD, WRITE, sizeof(int)); 67 _(TIOCGPGRP, WRITE, pid_t_sz); 68 _(TIOCGWINSZ, WRITE, struct_winsize_sz); 69 _(TIOCMBIC, READ, sizeof(int)); 70 _(TIOCMBIS, READ, sizeof(int)); 71 _(TIOCMGET, WRITE, sizeof(int)); 72 _(TIOCMSET, READ, sizeof(int)); 73 _(TIOCNOTTY, NONE, 0); 74 _(TIOCNXCL, NONE, 0); 75 _(TIOCOUTQ, WRITE, sizeof(int)); 76 _(TIOCPKT, READ, sizeof(int)); 77 _(TIOCSCTTY, NONE, 0); 78 _(TIOCSETD, READ, sizeof(int)); 79 _(TIOCSPGRP, READ, pid_t_sz); 80 _(TIOCSTI, READ, sizeof(char)); 81 _(TIOCSWINSZ, READ, struct_winsize_sz); 82 83#if !SANITIZER_IOS 84 _(SIOCADDMULTI, READ, struct_ifreq_sz); 85 _(SIOCDELMULTI, READ, struct_ifreq_sz); 86 _(SIOCGIFADDR, WRITE, struct_ifreq_sz); 87 _(SIOCGIFBRDADDR, WRITE, struct_ifreq_sz); 88 _(SIOCGIFDSTADDR, WRITE, struct_ifreq_sz); 89 _(SIOCGIFFLAGS, WRITE, struct_ifreq_sz); 90 _(SIOCGIFMETRIC, WRITE, struct_ifreq_sz); 91 _(SIOCGIFMTU, WRITE, struct_ifreq_sz); 92 _(SIOCGIFNETMASK, WRITE, struct_ifreq_sz); 93 _(SIOCSIFADDR, READ, struct_ifreq_sz); 94 _(SIOCSIFBRDADDR, READ, struct_ifreq_sz); 95 _(SIOCSIFDSTADDR, READ, struct_ifreq_sz); 96 _(SIOCSIFFLAGS, READ, struct_ifreq_sz); 97 _(SIOCSIFMETRIC, READ, struct_ifreq_sz); 98 _(SIOCSIFMTU, READ, struct_ifreq_sz); 99 _(SIOCSIFNETMASK, READ, struct_ifreq_sz); 100#endif 101 102#if (SANITIZER_LINUX && !SANITIZER_ANDROID) 103 _(SIOCGETSGCNT, WRITE, struct_sioc_sg_req_sz); 104 _(SIOCGETVIFCNT, WRITE, struct_sioc_vif_req_sz); 105#endif 106 107#if SANITIZER_LINUX 108 // Conflicting request ids. 109 // _(CDROMAUDIOBUFSIZ, NONE, 0); 110 // _(SNDCTL_TMR_CONTINUE, NONE, 0); 111 // _(SNDCTL_TMR_START, NONE, 0); 112 // _(SNDCTL_TMR_STOP, NONE, 0); 113 // _(SOUND_MIXER_READ_LOUD, WRITE, sizeof(int)); // same as ...READ_ENHANCE 114 // _(SOUND_MIXER_READ_MUTE, WRITE, sizeof(int)); // same as ...READ_ENHANCE 115 // _(SOUND_MIXER_WRITE_LOUD, WRITE, sizeof(int)); // same as ...WRITE_ENHANCE 116 // _(SOUND_MIXER_WRITE_MUTE, WRITE, sizeof(int)); // same as ...WRITE_ENHANCE 117 _(BLKFLSBUF, NONE, 0); 118 _(BLKGETSIZE, WRITE, sizeof(uptr)); 119 _(BLKRAGET, WRITE, sizeof(int)); 120 _(BLKRASET, NONE, 0); 121 _(BLKROGET, WRITE, sizeof(int)); 122 _(BLKROSET, READ, sizeof(int)); 123 _(BLKRRPART, NONE, 0); 124 _(CDROMEJECT, NONE, 0); 125 _(CDROMEJECT_SW, NONE, 0); 126 _(CDROMMULTISESSION, WRITE, struct_cdrom_multisession_sz); 127 _(CDROMPAUSE, NONE, 0); 128 _(CDROMPLAYMSF, READ, struct_cdrom_msf_sz); 129 _(CDROMPLAYTRKIND, READ, struct_cdrom_ti_sz); 130 _(CDROMREADAUDIO, READ, struct_cdrom_read_audio_sz); 131 _(CDROMREADCOOKED, READ, struct_cdrom_msf_sz); 132 _(CDROMREADMODE1, READ, struct_cdrom_msf_sz); 133 _(CDROMREADMODE2, READ, struct_cdrom_msf_sz); 134 _(CDROMREADRAW, READ, struct_cdrom_msf_sz); 135 _(CDROMREADTOCENTRY, WRITE, struct_cdrom_tocentry_sz); 136 _(CDROMREADTOCHDR, WRITE, struct_cdrom_tochdr_sz); 137 _(CDROMRESET, NONE, 0); 138 _(CDROMRESUME, NONE, 0); 139 _(CDROMSEEK, READ, struct_cdrom_msf_sz); 140 _(CDROMSTART, NONE, 0); 141 _(CDROMSTOP, NONE, 0); 142 _(CDROMSUBCHNL, WRITE, struct_cdrom_subchnl_sz); 143 _(CDROMVOLCTRL, READ, struct_cdrom_volctrl_sz); 144 _(CDROMVOLREAD, WRITE, struct_cdrom_volctrl_sz); 145 _(CDROM_GET_UPC, WRITE, 8); 146 _(EVIOCGABS, WRITE, struct_input_absinfo_sz); // fixup 147 _(EVIOCGBIT, WRITE, struct_input_id_sz); // fixup 148 _(EVIOCGEFFECTS, WRITE, sizeof(int)); 149 _(EVIOCGID, WRITE, struct_input_id_sz); 150 _(EVIOCGKEY, WRITE, 0); 151 _(EVIOCGKEYCODE, WRITE, sizeof(int) * 2); 152 _(EVIOCGLED, WRITE, 0); 153 _(EVIOCGNAME, WRITE, 0); 154 _(EVIOCGPHYS, WRITE, 0); 155 _(EVIOCGRAB, READ, sizeof(int)); 156 _(EVIOCGREP, WRITE, sizeof(int) * 2); 157 _(EVIOCGSND, WRITE, 0); 158 _(EVIOCGSW, WRITE, 0); 159 _(EVIOCGUNIQ, WRITE, 0); 160 _(EVIOCGVERSION, WRITE, sizeof(int)); 161 _(EVIOCRMFF, READ, sizeof(int)); 162 _(EVIOCSABS, READ, struct_input_absinfo_sz); // fixup 163 _(EVIOCSFF, READ, struct_ff_effect_sz); 164 _(EVIOCSKEYCODE, READ, sizeof(int) * 2); 165 _(EVIOCSREP, READ, sizeof(int) * 2); 166 _(FDCLRPRM, NONE, 0); 167 _(FDDEFPRM, READ, struct_floppy_struct_sz); 168 _(FDFLUSH, NONE, 0); 169 _(FDFMTBEG, NONE, 0); 170 _(FDFMTEND, NONE, 0); 171 _(FDFMTTRK, READ, struct_format_descr_sz); 172 _(FDGETDRVPRM, WRITE, struct_floppy_drive_params_sz); 173 _(FDGETDRVSTAT, WRITE, struct_floppy_drive_struct_sz); 174 _(FDGETDRVTYP, WRITE, 16); 175 _(FDGETFDCSTAT, WRITE, struct_floppy_fdc_state_sz); 176 _(FDGETMAXERRS, WRITE, struct_floppy_max_errors_sz); 177 _(FDGETPRM, WRITE, struct_floppy_struct_sz); 178 _(FDMSGOFF, NONE, 0); 179 _(FDMSGON, NONE, 0); 180 _(FDPOLLDRVSTAT, WRITE, struct_floppy_drive_struct_sz); 181 _(FDRAWCMD, WRITE, struct_floppy_raw_cmd_sz); 182 _(FDRESET, NONE, 0); 183 _(FDSETDRVPRM, READ, struct_floppy_drive_params_sz); 184 _(FDSETEMSGTRESH, NONE, 0); 185 _(FDSETMAXERRS, READ, struct_floppy_max_errors_sz); 186 _(FDSETPRM, READ, struct_floppy_struct_sz); 187 _(FDTWADDLE, NONE, 0); 188 _(FDWERRORCLR, NONE, 0); 189 _(FDWERRORGET, WRITE, struct_floppy_write_errors_sz); 190 _(HDIO_DRIVE_CMD, WRITE, sizeof(int)); 191 _(HDIO_GETGEO, WRITE, struct_hd_geometry_sz); 192 _(HDIO_GET_32BIT, WRITE, sizeof(int)); 193 _(HDIO_GET_DMA, WRITE, sizeof(int)); 194 _(HDIO_GET_IDENTITY, WRITE, struct_hd_driveid_sz); 195 _(HDIO_GET_KEEPSETTINGS, WRITE, sizeof(int)); 196 _(HDIO_GET_MULTCOUNT, WRITE, sizeof(int)); 197 _(HDIO_GET_NOWERR, WRITE, sizeof(int)); 198 _(HDIO_GET_UNMASKINTR, WRITE, sizeof(int)); 199 _(HDIO_SET_32BIT, NONE, 0); 200 _(HDIO_SET_DMA, NONE, 0); 201 _(HDIO_SET_KEEPSETTINGS, NONE, 0); 202 _(HDIO_SET_MULTCOUNT, NONE, 0); 203 _(HDIO_SET_NOWERR, NONE, 0); 204 _(HDIO_SET_UNMASKINTR, NONE, 0); 205 _(MTIOCGET, WRITE, struct_mtget_sz); 206 _(MTIOCPOS, WRITE, struct_mtpos_sz); 207 _(MTIOCTOP, READ, struct_mtop_sz); 208 _(PPPIOCGASYNCMAP, WRITE, sizeof(int)); 209 _(PPPIOCGDEBUG, WRITE, sizeof(int)); 210 _(PPPIOCGFLAGS, WRITE, sizeof(int)); 211 _(PPPIOCGUNIT, WRITE, sizeof(int)); 212 _(PPPIOCGXASYNCMAP, WRITE, sizeof(int) * 8); 213 _(PPPIOCSASYNCMAP, READ, sizeof(int)); 214 _(PPPIOCSDEBUG, READ, sizeof(int)); 215 _(PPPIOCSFLAGS, READ, sizeof(int)); 216 _(PPPIOCSMAXCID, READ, sizeof(int)); 217 _(PPPIOCSMRU, READ, sizeof(int)); 218 _(PPPIOCSXASYNCMAP, READ, sizeof(int) * 8); 219 _(SIOCADDRT, READ, struct_rtentry_sz); 220 _(SIOCDARP, READ, struct_arpreq_sz); 221 _(SIOCDELRT, READ, struct_rtentry_sz); 222 _(SIOCDRARP, READ, struct_arpreq_sz); 223 _(SIOCGARP, WRITE, struct_arpreq_sz); 224 _(SIOCGIFENCAP, WRITE, sizeof(int)); 225 _(SIOCGIFHWADDR, WRITE, struct_ifreq_sz); 226 _(SIOCGIFMAP, WRITE, struct_ifreq_sz); 227 _(SIOCGIFMEM, WRITE, struct_ifreq_sz); 228 _(SIOCGIFNAME, NONE, 0); 229 _(SIOCGIFSLAVE, NONE, 0); 230 _(SIOCGRARP, WRITE, struct_arpreq_sz); 231 _(SIOCGSTAMP, WRITE, timeval_sz); 232 _(SIOCSARP, READ, struct_arpreq_sz); 233 _(SIOCSIFENCAP, READ, sizeof(int)); 234 _(SIOCSIFHWADDR, READ, struct_ifreq_sz); 235 _(SIOCSIFLINK, NONE, 0); 236 _(SIOCSIFMAP, READ, struct_ifreq_sz); 237 _(SIOCSIFMEM, READ, struct_ifreq_sz); 238 _(SIOCSIFSLAVE, NONE, 0); 239 _(SIOCSRARP, READ, struct_arpreq_sz); 240 _(SNDCTL_COPR_HALT, WRITE, struct_copr_debug_buf_sz); 241 _(SNDCTL_COPR_LOAD, READ, struct_copr_buffer_sz); 242 _(SNDCTL_COPR_RCODE, WRITE, struct_copr_debug_buf_sz); 243 _(SNDCTL_COPR_RCVMSG, WRITE, struct_copr_msg_sz); 244 _(SNDCTL_COPR_RDATA, WRITE, struct_copr_debug_buf_sz); 245 _(SNDCTL_COPR_RESET, NONE, 0); 246 _(SNDCTL_COPR_RUN, WRITE, struct_copr_debug_buf_sz); 247 _(SNDCTL_COPR_SENDMSG, READ, struct_copr_msg_sz); 248 _(SNDCTL_COPR_WCODE, READ, struct_copr_debug_buf_sz); 249 _(SNDCTL_COPR_WDATA, READ, struct_copr_debug_buf_sz); 250 _(SNDCTL_DSP_GETBLKSIZE, WRITE, sizeof(int)); 251 _(SNDCTL_DSP_GETFMTS, WRITE, sizeof(int)); 252 _(SNDCTL_DSP_NONBLOCK, NONE, 0); 253 _(SNDCTL_DSP_POST, NONE, 0); 254 _(SNDCTL_DSP_RESET, NONE, 0); 255 _(SNDCTL_DSP_SETFMT, WRITE, sizeof(int)); 256 _(SNDCTL_DSP_SETFRAGMENT, WRITE, sizeof(int)); 257 _(SNDCTL_DSP_SPEED, WRITE, sizeof(int)); 258 _(SNDCTL_DSP_STEREO, WRITE, sizeof(int)); 259 _(SNDCTL_DSP_SUBDIVIDE, WRITE, sizeof(int)); 260 _(SNDCTL_DSP_SYNC, NONE, 0); 261 _(SNDCTL_FM_4OP_ENABLE, READ, sizeof(int)); 262 _(SNDCTL_FM_LOAD_INSTR, READ, struct_sbi_instrument_sz); 263 _(SNDCTL_MIDI_INFO, WRITE, struct_midi_info_sz); 264 _(SNDCTL_MIDI_PRETIME, WRITE, sizeof(int)); 265 _(SNDCTL_SEQ_CTRLRATE, WRITE, sizeof(int)); 266 _(SNDCTL_SEQ_GETINCOUNT, WRITE, sizeof(int)); 267 _(SNDCTL_SEQ_GETOUTCOUNT, WRITE, sizeof(int)); 268 _(SNDCTL_SEQ_NRMIDIS, WRITE, sizeof(int)); 269 _(SNDCTL_SEQ_NRSYNTHS, WRITE, sizeof(int)); 270 _(SNDCTL_SEQ_OUTOFBAND, READ, struct_seq_event_rec_sz); 271 _(SNDCTL_SEQ_PANIC, NONE, 0); 272 _(SNDCTL_SEQ_PERCMODE, NONE, 0); 273 _(SNDCTL_SEQ_RESET, NONE, 0); 274 _(SNDCTL_SEQ_RESETSAMPLES, READ, sizeof(int)); 275 _(SNDCTL_SEQ_SYNC, NONE, 0); 276 _(SNDCTL_SEQ_TESTMIDI, READ, sizeof(int)); 277 _(SNDCTL_SEQ_THRESHOLD, READ, sizeof(int)); 278 _(SNDCTL_SYNTH_INFO, WRITE, struct_synth_info_sz); 279 _(SNDCTL_SYNTH_MEMAVL, WRITE, sizeof(int)); 280 _(SNDCTL_TMR_METRONOME, READ, sizeof(int)); 281 _(SNDCTL_TMR_SELECT, WRITE, sizeof(int)); 282 _(SNDCTL_TMR_SOURCE, WRITE, sizeof(int)); 283 _(SNDCTL_TMR_TEMPO, WRITE, sizeof(int)); 284 _(SNDCTL_TMR_TIMEBASE, WRITE, sizeof(int)); 285 _(SOUND_MIXER_READ_ALTPCM, WRITE, sizeof(int)); 286 _(SOUND_MIXER_READ_BASS, WRITE, sizeof(int)); 287 _(SOUND_MIXER_READ_CAPS, WRITE, sizeof(int)); 288 _(SOUND_MIXER_READ_CD, WRITE, sizeof(int)); 289 _(SOUND_MIXER_READ_DEVMASK, WRITE, sizeof(int)); 290 _(SOUND_MIXER_READ_ENHANCE, WRITE, sizeof(int)); 291 _(SOUND_MIXER_READ_IGAIN, WRITE, sizeof(int)); 292 _(SOUND_MIXER_READ_IMIX, WRITE, sizeof(int)); 293 _(SOUND_MIXER_READ_LINE, WRITE, sizeof(int)); 294 _(SOUND_MIXER_READ_LINE1, WRITE, sizeof(int)); 295 _(SOUND_MIXER_READ_LINE2, WRITE, sizeof(int)); 296 _(SOUND_MIXER_READ_LINE3, WRITE, sizeof(int)); 297 _(SOUND_MIXER_READ_MIC, WRITE, sizeof(int)); 298 _(SOUND_MIXER_READ_OGAIN, WRITE, sizeof(int)); 299 _(SOUND_MIXER_READ_PCM, WRITE, sizeof(int)); 300 _(SOUND_MIXER_READ_RECLEV, WRITE, sizeof(int)); 301 _(SOUND_MIXER_READ_RECMASK, WRITE, sizeof(int)); 302 _(SOUND_MIXER_READ_RECSRC, WRITE, sizeof(int)); 303 _(SOUND_MIXER_READ_SPEAKER, WRITE, sizeof(int)); 304 _(SOUND_MIXER_READ_STEREODEVS, WRITE, sizeof(int)); 305 _(SOUND_MIXER_READ_SYNTH, WRITE, sizeof(int)); 306 _(SOUND_MIXER_READ_TREBLE, WRITE, sizeof(int)); 307 _(SOUND_MIXER_READ_VOLUME, WRITE, sizeof(int)); 308 _(SOUND_MIXER_WRITE_ALTPCM, WRITE, sizeof(int)); 309 _(SOUND_MIXER_WRITE_BASS, WRITE, sizeof(int)); 310 _(SOUND_MIXER_WRITE_CD, WRITE, sizeof(int)); 311 _(SOUND_MIXER_WRITE_ENHANCE, WRITE, sizeof(int)); 312 _(SOUND_MIXER_WRITE_IGAIN, WRITE, sizeof(int)); 313 _(SOUND_MIXER_WRITE_IMIX, WRITE, sizeof(int)); 314 _(SOUND_MIXER_WRITE_LINE, WRITE, sizeof(int)); 315 _(SOUND_MIXER_WRITE_LINE1, WRITE, sizeof(int)); 316 _(SOUND_MIXER_WRITE_LINE2, WRITE, sizeof(int)); 317 _(SOUND_MIXER_WRITE_LINE3, WRITE, sizeof(int)); 318 _(SOUND_MIXER_WRITE_MIC, WRITE, sizeof(int)); 319 _(SOUND_MIXER_WRITE_OGAIN, WRITE, sizeof(int)); 320 _(SOUND_MIXER_WRITE_PCM, WRITE, sizeof(int)); 321 _(SOUND_MIXER_WRITE_RECLEV, WRITE, sizeof(int)); 322 _(SOUND_MIXER_WRITE_RECSRC, WRITE, sizeof(int)); 323 _(SOUND_MIXER_WRITE_SPEAKER, WRITE, sizeof(int)); 324 _(SOUND_MIXER_WRITE_SYNTH, WRITE, sizeof(int)); 325 _(SOUND_MIXER_WRITE_TREBLE, WRITE, sizeof(int)); 326 _(SOUND_MIXER_WRITE_VOLUME, WRITE, sizeof(int)); 327 _(SOUND_PCM_READ_BITS, WRITE, sizeof(int)); 328 _(SOUND_PCM_READ_CHANNELS, WRITE, sizeof(int)); 329 _(SOUND_PCM_READ_FILTER, WRITE, sizeof(int)); 330 _(SOUND_PCM_READ_RATE, WRITE, sizeof(int)); 331 _(SOUND_PCM_WRITE_CHANNELS, WRITE, sizeof(int)); 332 _(SOUND_PCM_WRITE_FILTER, WRITE, sizeof(int)); 333 _(TCFLSH, NONE, 0); 334 _(TCGETA, WRITE, struct_termio_sz); 335 _(TCGETS, WRITE, struct_termios_sz); 336 _(TCSBRK, NONE, 0); 337 _(TCSBRKP, NONE, 0); 338 _(TCSETA, READ, struct_termio_sz); 339 _(TCSETAF, READ, struct_termio_sz); 340 _(TCSETAW, READ, struct_termio_sz); 341 _(TCSETS, READ, struct_termios_sz); 342 _(TCSETSF, READ, struct_termios_sz); 343 _(TCSETSW, READ, struct_termios_sz); 344 _(TCXONC, NONE, 0); 345 _(TIOCGLCKTRMIOS, WRITE, struct_termios_sz); 346 _(TIOCGSOFTCAR, WRITE, sizeof(int)); 347 _(TIOCINQ, WRITE, sizeof(int)); 348 _(TIOCLINUX, READ, sizeof(char)); 349 _(TIOCSERCONFIG, NONE, 0); 350 _(TIOCSERGETLSR, WRITE, sizeof(int)); 351 _(TIOCSERGWILD, WRITE, sizeof(int)); 352 _(TIOCSERSWILD, READ, sizeof(int)); 353 _(TIOCSLCKTRMIOS, READ, struct_termios_sz); 354 _(TIOCSSOFTCAR, READ, sizeof(int)); 355 _(VT_ACTIVATE, NONE, 0); 356 _(VT_DISALLOCATE, NONE, 0); 357 _(VT_GETMODE, WRITE, struct_vt_mode_sz); 358 _(VT_GETSTATE, WRITE, struct_vt_stat_sz); 359 _(VT_OPENQRY, WRITE, sizeof(int)); 360 _(VT_RELDISP, NONE, 0); 361 _(VT_RESIZE, READ, struct_vt_sizes_sz); 362 _(VT_RESIZEX, READ, struct_vt_consize_sz); 363 _(VT_SENDSIG, NONE, 0); 364 _(VT_SETMODE, READ, struct_vt_mode_sz); 365 _(VT_WAITACTIVE, NONE, 0); 366#endif 367 368#if SANITIZER_LINUX && !SANITIZER_ANDROID 369 // _(SIOCDEVPLIP, WRITE, struct_ifreq_sz); // the same as EQL_ENSLAVE 370 _(CYGETDEFTHRESH, WRITE, sizeof(int)); 371 _(CYGETDEFTIMEOUT, WRITE, sizeof(int)); 372 _(CYGETMON, WRITE, struct_cyclades_monitor_sz); 373 _(CYGETTHRESH, WRITE, sizeof(int)); 374 _(CYGETTIMEOUT, WRITE, sizeof(int)); 375 _(CYSETDEFTHRESH, NONE, 0); 376 _(CYSETDEFTIMEOUT, NONE, 0); 377 _(CYSETTHRESH, NONE, 0); 378 _(CYSETTIMEOUT, NONE, 0); 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(ioctl_table, ioctl_table_size, 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("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 & ~(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