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