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 _(SIOCADDMULTI, READ, struct_ifreq_sz); 55 _(SIOCATMARK, WRITE, sizeof(int)); 56 _(SIOCDELMULTI, READ, struct_ifreq_sz); 57 _(SIOCGIFADDR, WRITE, struct_ifreq_sz); 58 _(SIOCGIFBRDADDR, WRITE, struct_ifreq_sz); 59 _(SIOCGIFCONF, CUSTOM, 0); 60 _(SIOCGIFDSTADDR, WRITE, struct_ifreq_sz); 61 _(SIOCGIFFLAGS, WRITE, struct_ifreq_sz); 62 _(SIOCGIFMETRIC, WRITE, struct_ifreq_sz); 63 _(SIOCGIFMTU, WRITE, struct_ifreq_sz); 64 _(SIOCGIFNETMASK, WRITE, struct_ifreq_sz); 65 _(SIOCGPGRP, WRITE, sizeof(int)); 66 _(SIOCSIFADDR, READ, struct_ifreq_sz); 67 _(SIOCSIFBRDADDR, READ, struct_ifreq_sz); 68 _(SIOCSIFDSTADDR, READ, struct_ifreq_sz); 69 _(SIOCSIFFLAGS, READ, struct_ifreq_sz); 70 _(SIOCSIFMETRIC, READ, struct_ifreq_sz); 71 _(SIOCSIFMTU, READ, struct_ifreq_sz); 72 _(SIOCSIFNETMASK, READ, struct_ifreq_sz); 73 _(SIOCSPGRP, READ, sizeof(int)); 74 _(TIOCCONS, NONE, 0); 75 _(TIOCEXCL, NONE, 0); 76 _(TIOCGETD, WRITE, sizeof(int)); 77 _(TIOCGPGRP, WRITE, pid_t_sz); 78 _(TIOCGWINSZ, WRITE, struct_winsize_sz); 79 _(TIOCMBIC, READ, sizeof(int)); 80 _(TIOCMBIS, READ, sizeof(int)); 81 _(TIOCMGET, WRITE, sizeof(int)); 82 _(TIOCMSET, READ, sizeof(int)); 83 _(TIOCNOTTY, NONE, 0); 84 _(TIOCNXCL, NONE, 0); 85 _(TIOCOUTQ, WRITE, sizeof(int)); 86 _(TIOCPKT, READ, sizeof(int)); 87 _(TIOCSCTTY, NONE, 0); 88 _(TIOCSETD, READ, sizeof(int)); 89 _(TIOCSPGRP, READ, pid_t_sz); 90 _(TIOCSTI, READ, sizeof(char)); 91 _(TIOCSWINSZ, READ, struct_winsize_sz); 92 93#if (SANITIZER_LINUX && !SANITIZER_ANDROID) 94 _(SIOCGETSGCNT, WRITE, struct_sioc_sg_req_sz); 95 _(SIOCGETVIFCNT, WRITE, struct_sioc_vif_req_sz); 96#endif 97 98#if SANITIZER_LINUX 99 // Conflicting request ids. 100 // _(CDROMAUDIOBUFSIZ, NONE, 0); 101 // _(SNDCTL_TMR_CONTINUE, NONE, 0); 102 // _(SNDCTL_TMR_START, NONE, 0); 103 // _(SNDCTL_TMR_STOP, NONE, 0); 104 // _(SOUND_MIXER_READ_LOUD, WRITE, sizeof(int)); // same as ...READ_ENHANCE 105 // _(SOUND_MIXER_READ_MUTE, WRITE, sizeof(int)); // same as ...READ_ENHANCE 106 // _(SOUND_MIXER_WRITE_LOUD, WRITE, sizeof(int)); // same as ...WRITE_ENHANCE 107 // _(SOUND_MIXER_WRITE_MUTE, WRITE, sizeof(int)); // same as ...WRITE_ENHANCE 108 _(BLKFLSBUF, NONE, 0); 109 _(BLKGETSIZE, WRITE, sizeof(uptr)); 110 _(BLKRAGET, WRITE, sizeof(int)); 111 _(BLKRASET, NONE, 0); 112 _(BLKROGET, WRITE, sizeof(int)); 113 _(BLKROSET, READ, sizeof(int)); 114 _(BLKRRPART, NONE, 0); 115 _(CDROMEJECT, NONE, 0); 116 _(CDROMEJECT_SW, NONE, 0); 117 _(CDROMMULTISESSION, WRITE, struct_cdrom_multisession_sz); 118 _(CDROMPAUSE, NONE, 0); 119 _(CDROMPLAYMSF, READ, struct_cdrom_msf_sz); 120 _(CDROMPLAYTRKIND, READ, struct_cdrom_ti_sz); 121 _(CDROMREADAUDIO, READ, struct_cdrom_read_audio_sz); 122 _(CDROMREADCOOKED, READ, struct_cdrom_msf_sz); 123 _(CDROMREADMODE1, READ, struct_cdrom_msf_sz); 124 _(CDROMREADMODE2, READ, struct_cdrom_msf_sz); 125 _(CDROMREADRAW, READ, struct_cdrom_msf_sz); 126 _(CDROMREADTOCENTRY, WRITE, struct_cdrom_tocentry_sz); 127 _(CDROMREADTOCHDR, WRITE, struct_cdrom_tochdr_sz); 128 _(CDROMRESET, NONE, 0); 129 _(CDROMRESUME, NONE, 0); 130 _(CDROMSEEK, READ, struct_cdrom_msf_sz); 131 _(CDROMSTART, NONE, 0); 132 _(CDROMSTOP, NONE, 0); 133 _(CDROMSUBCHNL, WRITE, struct_cdrom_subchnl_sz); 134 _(CDROMVOLCTRL, READ, struct_cdrom_volctrl_sz); 135 _(CDROMVOLREAD, WRITE, struct_cdrom_volctrl_sz); 136 _(CDROM_GET_UPC, WRITE, 8); 137 _(EVIOCGABS, WRITE, struct_input_absinfo_sz); // fixup 138 _(EVIOCGBIT, WRITE, struct_input_id_sz); // fixup 139 _(EVIOCGEFFECTS, WRITE, sizeof(int)); 140 _(EVIOCGID, WRITE, struct_input_id_sz); 141 _(EVIOCGKEY, WRITE, 0); 142 _(EVIOCGKEYCODE, WRITE, sizeof(int) * 2); 143 _(EVIOCGLED, WRITE, 0); 144 _(EVIOCGNAME, WRITE, 0); 145 _(EVIOCGPHYS, WRITE, 0); 146 _(EVIOCGRAB, READ, sizeof(int)); 147 _(EVIOCGREP, WRITE, sizeof(int) * 2); 148 _(EVIOCGSND, WRITE, 0); 149 _(EVIOCGSW, WRITE, 0); 150 _(EVIOCGUNIQ, WRITE, 0); 151 _(EVIOCGVERSION, WRITE, sizeof(int)); 152 _(EVIOCRMFF, READ, sizeof(int)); 153 _(EVIOCSABS, READ, struct_input_absinfo_sz); // fixup 154 _(EVIOCSFF, READ, struct_ff_effect_sz); 155 _(EVIOCSKEYCODE, READ, sizeof(int) * 2); 156 _(EVIOCSREP, READ, sizeof(int) * 2); 157 _(FDCLRPRM, NONE, 0); 158 _(FDDEFPRM, READ, struct_floppy_struct_sz); 159 _(FDFLUSH, NONE, 0); 160 _(FDFMTBEG, NONE, 0); 161 _(FDFMTEND, NONE, 0); 162 _(FDFMTTRK, READ, struct_format_descr_sz); 163 _(FDGETDRVPRM, WRITE, struct_floppy_drive_params_sz); 164 _(FDGETDRVSTAT, WRITE, struct_floppy_drive_struct_sz); 165 _(FDGETDRVTYP, WRITE, 16); 166 _(FDGETFDCSTAT, WRITE, struct_floppy_fdc_state_sz); 167 _(FDGETMAXERRS, WRITE, struct_floppy_max_errors_sz); 168 _(FDGETPRM, WRITE, struct_floppy_struct_sz); 169 _(FDMSGOFF, NONE, 0); 170 _(FDMSGON, NONE, 0); 171 _(FDPOLLDRVSTAT, WRITE, struct_floppy_drive_struct_sz); 172 _(FDRAWCMD, WRITE, struct_floppy_raw_cmd_sz); 173 _(FDRESET, NONE, 0); 174 _(FDSETDRVPRM, READ, struct_floppy_drive_params_sz); 175 _(FDSETEMSGTRESH, NONE, 0); 176 _(FDSETMAXERRS, READ, struct_floppy_max_errors_sz); 177 _(FDSETPRM, READ, struct_floppy_struct_sz); 178 _(FDTWADDLE, NONE, 0); 179 _(FDWERRORCLR, NONE, 0); 180 _(FDWERRORGET, WRITE, struct_floppy_write_errors_sz); 181 _(HDIO_DRIVE_CMD, WRITE, sizeof(int)); 182 _(HDIO_GETGEO, WRITE, struct_hd_geometry_sz); 183 _(HDIO_GET_32BIT, WRITE, sizeof(int)); 184 _(HDIO_GET_DMA, WRITE, sizeof(int)); 185 _(HDIO_GET_IDENTITY, WRITE, struct_hd_driveid_sz); 186 _(HDIO_GET_KEEPSETTINGS, WRITE, sizeof(int)); 187 _(HDIO_GET_MULTCOUNT, WRITE, sizeof(int)); 188 _(HDIO_GET_NOWERR, WRITE, sizeof(int)); 189 _(HDIO_GET_UNMASKINTR, WRITE, sizeof(int)); 190 _(HDIO_SET_32BIT, NONE, 0); 191 _(HDIO_SET_DMA, NONE, 0); 192 _(HDIO_SET_KEEPSETTINGS, NONE, 0); 193 _(HDIO_SET_MULTCOUNT, NONE, 0); 194 _(HDIO_SET_NOWERR, NONE, 0); 195 _(HDIO_SET_UNMASKINTR, NONE, 0); 196 _(MTIOCGET, WRITE, struct_mtget_sz); 197 _(MTIOCPOS, WRITE, struct_mtpos_sz); 198 _(MTIOCTOP, READ, struct_mtop_sz); 199 _(PPPIOCGASYNCMAP, WRITE, sizeof(int)); 200 _(PPPIOCGDEBUG, WRITE, sizeof(int)); 201 _(PPPIOCGFLAGS, WRITE, sizeof(int)); 202 _(PPPIOCGUNIT, WRITE, sizeof(int)); 203 _(PPPIOCGXASYNCMAP, WRITE, sizeof(int) * 8); 204 _(PPPIOCSASYNCMAP, READ, sizeof(int)); 205 _(PPPIOCSDEBUG, READ, sizeof(int)); 206 _(PPPIOCSFLAGS, READ, sizeof(int)); 207 _(PPPIOCSMAXCID, READ, sizeof(int)); 208 _(PPPIOCSMRU, READ, sizeof(int)); 209 _(PPPIOCSXASYNCMAP, READ, sizeof(int) * 8); 210 _(SIOCADDRT, READ, struct_rtentry_sz); 211 _(SIOCDARP, READ, struct_arpreq_sz); 212 _(SIOCDELRT, READ, struct_rtentry_sz); 213 _(SIOCDRARP, READ, struct_arpreq_sz); 214 _(SIOCGARP, WRITE, struct_arpreq_sz); 215 _(SIOCGIFENCAP, WRITE, sizeof(int)); 216 _(SIOCGIFHWADDR, WRITE, struct_ifreq_sz); 217 _(SIOCGIFMAP, WRITE, struct_ifreq_sz); 218 _(SIOCGIFMEM, WRITE, struct_ifreq_sz); 219 _(SIOCGIFNAME, NONE, 0); 220 _(SIOCGIFSLAVE, NONE, 0); 221 _(SIOCGRARP, WRITE, struct_arpreq_sz); 222 _(SIOCGSTAMP, WRITE, timeval_sz); 223 _(SIOCSARP, READ, struct_arpreq_sz); 224 _(SIOCSIFENCAP, READ, sizeof(int)); 225 _(SIOCSIFHWADDR, READ, struct_ifreq_sz); 226 _(SIOCSIFLINK, NONE, 0); 227 _(SIOCSIFMAP, READ, struct_ifreq_sz); 228 _(SIOCSIFMEM, READ, struct_ifreq_sz); 229 _(SIOCSIFSLAVE, NONE, 0); 230 _(SIOCSRARP, READ, struct_arpreq_sz); 231 _(SNDCTL_COPR_HALT, WRITE, struct_copr_debug_buf_sz); 232 _(SNDCTL_COPR_LOAD, READ, struct_copr_buffer_sz); 233 _(SNDCTL_COPR_RCODE, WRITE, struct_copr_debug_buf_sz); 234 _(SNDCTL_COPR_RCVMSG, WRITE, struct_copr_msg_sz); 235 _(SNDCTL_COPR_RDATA, WRITE, struct_copr_debug_buf_sz); 236 _(SNDCTL_COPR_RESET, NONE, 0); 237 _(SNDCTL_COPR_RUN, WRITE, struct_copr_debug_buf_sz); 238 _(SNDCTL_COPR_SENDMSG, READ, struct_copr_msg_sz); 239 _(SNDCTL_COPR_WCODE, READ, struct_copr_debug_buf_sz); 240 _(SNDCTL_COPR_WDATA, READ, struct_copr_debug_buf_sz); 241 _(SNDCTL_DSP_GETBLKSIZE, WRITE, sizeof(int)); 242 _(SNDCTL_DSP_GETFMTS, WRITE, sizeof(int)); 243 _(SNDCTL_DSP_NONBLOCK, NONE, 0); 244 _(SNDCTL_DSP_POST, NONE, 0); 245 _(SNDCTL_DSP_RESET, NONE, 0); 246 _(SNDCTL_DSP_SETFMT, WRITE, sizeof(int)); 247 _(SNDCTL_DSP_SETFRAGMENT, WRITE, sizeof(int)); 248 _(SNDCTL_DSP_SPEED, WRITE, sizeof(int)); 249 _(SNDCTL_DSP_STEREO, WRITE, sizeof(int)); 250 _(SNDCTL_DSP_SUBDIVIDE, WRITE, sizeof(int)); 251 _(SNDCTL_DSP_SYNC, NONE, 0); 252 _(SNDCTL_FM_4OP_ENABLE, READ, sizeof(int)); 253 _(SNDCTL_FM_LOAD_INSTR, READ, struct_sbi_instrument_sz); 254 _(SNDCTL_MIDI_INFO, WRITE, struct_midi_info_sz); 255 _(SNDCTL_MIDI_PRETIME, WRITE, sizeof(int)); 256 _(SNDCTL_SEQ_CTRLRATE, WRITE, sizeof(int)); 257 _(SNDCTL_SEQ_GETINCOUNT, WRITE, sizeof(int)); 258 _(SNDCTL_SEQ_GETOUTCOUNT, WRITE, sizeof(int)); 259 _(SNDCTL_SEQ_NRMIDIS, WRITE, sizeof(int)); 260 _(SNDCTL_SEQ_NRSYNTHS, WRITE, sizeof(int)); 261 _(SNDCTL_SEQ_OUTOFBAND, READ, struct_seq_event_rec_sz); 262 _(SNDCTL_SEQ_PANIC, NONE, 0); 263 _(SNDCTL_SEQ_PERCMODE, NONE, 0); 264 _(SNDCTL_SEQ_RESET, NONE, 0); 265 _(SNDCTL_SEQ_RESETSAMPLES, READ, sizeof(int)); 266 _(SNDCTL_SEQ_SYNC, NONE, 0); 267 _(SNDCTL_SEQ_TESTMIDI, READ, sizeof(int)); 268 _(SNDCTL_SEQ_THRESHOLD, READ, sizeof(int)); 269 _(SNDCTL_SYNTH_INFO, WRITE, struct_synth_info_sz); 270 _(SNDCTL_SYNTH_MEMAVL, WRITE, sizeof(int)); 271 _(SNDCTL_TMR_METRONOME, READ, sizeof(int)); 272 _(SNDCTL_TMR_SELECT, WRITE, sizeof(int)); 273 _(SNDCTL_TMR_SOURCE, WRITE, sizeof(int)); 274 _(SNDCTL_TMR_TEMPO, WRITE, sizeof(int)); 275 _(SNDCTL_TMR_TIMEBASE, WRITE, sizeof(int)); 276 _(SOUND_MIXER_READ_ALTPCM, WRITE, sizeof(int)); 277 _(SOUND_MIXER_READ_BASS, WRITE, sizeof(int)); 278 _(SOUND_MIXER_READ_CAPS, WRITE, sizeof(int)); 279 _(SOUND_MIXER_READ_CD, WRITE, sizeof(int)); 280 _(SOUND_MIXER_READ_DEVMASK, WRITE, sizeof(int)); 281 _(SOUND_MIXER_READ_ENHANCE, WRITE, sizeof(int)); 282 _(SOUND_MIXER_READ_IGAIN, WRITE, sizeof(int)); 283 _(SOUND_MIXER_READ_IMIX, WRITE, sizeof(int)); 284 _(SOUND_MIXER_READ_LINE, WRITE, sizeof(int)); 285 _(SOUND_MIXER_READ_LINE1, WRITE, sizeof(int)); 286 _(SOUND_MIXER_READ_LINE2, WRITE, sizeof(int)); 287 _(SOUND_MIXER_READ_LINE3, WRITE, sizeof(int)); 288 _(SOUND_MIXER_READ_MIC, WRITE, sizeof(int)); 289 _(SOUND_MIXER_READ_OGAIN, WRITE, sizeof(int)); 290 _(SOUND_MIXER_READ_PCM, WRITE, sizeof(int)); 291 _(SOUND_MIXER_READ_RECLEV, WRITE, sizeof(int)); 292 _(SOUND_MIXER_READ_RECMASK, WRITE, sizeof(int)); 293 _(SOUND_MIXER_READ_RECSRC, WRITE, sizeof(int)); 294 _(SOUND_MIXER_READ_SPEAKER, WRITE, sizeof(int)); 295 _(SOUND_MIXER_READ_STEREODEVS, WRITE, sizeof(int)); 296 _(SOUND_MIXER_READ_SYNTH, WRITE, sizeof(int)); 297 _(SOUND_MIXER_READ_TREBLE, WRITE, sizeof(int)); 298 _(SOUND_MIXER_READ_VOLUME, WRITE, sizeof(int)); 299 _(SOUND_MIXER_WRITE_ALTPCM, WRITE, sizeof(int)); 300 _(SOUND_MIXER_WRITE_BASS, WRITE, sizeof(int)); 301 _(SOUND_MIXER_WRITE_CD, WRITE, sizeof(int)); 302 _(SOUND_MIXER_WRITE_ENHANCE, WRITE, sizeof(int)); 303 _(SOUND_MIXER_WRITE_IGAIN, WRITE, sizeof(int)); 304 _(SOUND_MIXER_WRITE_IMIX, WRITE, sizeof(int)); 305 _(SOUND_MIXER_WRITE_LINE, WRITE, sizeof(int)); 306 _(SOUND_MIXER_WRITE_LINE1, WRITE, sizeof(int)); 307 _(SOUND_MIXER_WRITE_LINE2, WRITE, sizeof(int)); 308 _(SOUND_MIXER_WRITE_LINE3, WRITE, sizeof(int)); 309 _(SOUND_MIXER_WRITE_MIC, WRITE, sizeof(int)); 310 _(SOUND_MIXER_WRITE_OGAIN, WRITE, sizeof(int)); 311 _(SOUND_MIXER_WRITE_PCM, WRITE, sizeof(int)); 312 _(SOUND_MIXER_WRITE_RECLEV, WRITE, sizeof(int)); 313 _(SOUND_MIXER_WRITE_RECSRC, WRITE, sizeof(int)); 314 _(SOUND_MIXER_WRITE_SPEAKER, WRITE, sizeof(int)); 315 _(SOUND_MIXER_WRITE_SYNTH, WRITE, sizeof(int)); 316 _(SOUND_MIXER_WRITE_TREBLE, WRITE, sizeof(int)); 317 _(SOUND_MIXER_WRITE_VOLUME, WRITE, sizeof(int)); 318 _(SOUND_PCM_READ_BITS, WRITE, sizeof(int)); 319 _(SOUND_PCM_READ_CHANNELS, WRITE, sizeof(int)); 320 _(SOUND_PCM_READ_FILTER, WRITE, sizeof(int)); 321 _(SOUND_PCM_READ_RATE, WRITE, sizeof(int)); 322 _(SOUND_PCM_WRITE_CHANNELS, WRITE, sizeof(int)); 323 _(SOUND_PCM_WRITE_FILTER, WRITE, sizeof(int)); 324 _(TCFLSH, NONE, 0); 325 _(TCGETA, WRITE, struct_termio_sz); 326 _(TCGETS, WRITE, struct_termios_sz); 327 _(TCSBRK, NONE, 0); 328 _(TCSBRKP, NONE, 0); 329 _(TCSETA, READ, struct_termio_sz); 330 _(TCSETAF, READ, struct_termio_sz); 331 _(TCSETAW, READ, struct_termio_sz); 332 _(TCSETS, READ, struct_termios_sz); 333 _(TCSETSF, READ, struct_termios_sz); 334 _(TCSETSW, READ, struct_termios_sz); 335 _(TCXONC, NONE, 0); 336 _(TIOCGLCKTRMIOS, WRITE, struct_termios_sz); 337 _(TIOCGSOFTCAR, WRITE, sizeof(int)); 338 _(TIOCINQ, WRITE, sizeof(int)); 339 _(TIOCLINUX, READ, sizeof(char)); 340 _(TIOCSERCONFIG, NONE, 0); 341 _(TIOCSERGETLSR, WRITE, sizeof(int)); 342 _(TIOCSERGWILD, WRITE, sizeof(int)); 343 _(TIOCSERSWILD, READ, sizeof(int)); 344 _(TIOCSLCKTRMIOS, READ, struct_termios_sz); 345 _(TIOCSSOFTCAR, READ, sizeof(int)); 346 _(VT_ACTIVATE, NONE, 0); 347 _(VT_DISALLOCATE, NONE, 0); 348 _(VT_GETMODE, WRITE, struct_vt_mode_sz); 349 _(VT_GETSTATE, WRITE, struct_vt_stat_sz); 350 _(VT_OPENQRY, WRITE, sizeof(int)); 351 _(VT_RELDISP, NONE, 0); 352 _(VT_RESIZE, READ, struct_vt_sizes_sz); 353 _(VT_RESIZEX, READ, struct_vt_consize_sz); 354 _(VT_SENDSIG, NONE, 0); 355 _(VT_SETMODE, READ, struct_vt_mode_sz); 356 _(VT_WAITACTIVE, NONE, 0); 357#endif 358 359#if SANITIZER_LINUX && !SANITIZER_ANDROID 360 // _(SIOCDEVPLIP, WRITE, struct_ifreq_sz); // the same as EQL_ENSLAVE 361 _(CYGETDEFTHRESH, WRITE, sizeof(int)); 362 _(CYGETDEFTIMEOUT, WRITE, sizeof(int)); 363 _(CYGETMON, WRITE, struct_cyclades_monitor_sz); 364 _(CYGETTHRESH, WRITE, sizeof(int)); 365 _(CYGETTIMEOUT, WRITE, sizeof(int)); 366 _(CYSETDEFTHRESH, NONE, 0); 367 _(CYSETDEFTIMEOUT, NONE, 0); 368 _(CYSETTHRESH, NONE, 0); 369 _(CYSETTIMEOUT, NONE, 0); 370 _(EQL_EMANCIPATE, WRITE, struct_ifreq_sz); 371 _(EQL_ENSLAVE, WRITE, struct_ifreq_sz); 372 _(EQL_GETMASTRCFG, WRITE, struct_ifreq_sz); 373 _(EQL_GETSLAVECFG, WRITE, struct_ifreq_sz); 374 _(EQL_SETMASTRCFG, WRITE, struct_ifreq_sz); 375 _(EQL_SETSLAVECFG, WRITE, struct_ifreq_sz); 376 _(EVIOCGKEYCODE_V2, WRITE, struct_input_keymap_entry_sz); 377 _(EVIOCGPROP, WRITE, 0); 378 _(EVIOCSKEYCODE_V2, READ, struct_input_keymap_entry_sz); 379 _(FS_IOC_GETFLAGS, WRITE, sizeof(int)); 380 _(FS_IOC_GETVERSION, WRITE, sizeof(int)); 381 _(FS_IOC_SETFLAGS, READ, sizeof(int)); 382 _(FS_IOC_SETVERSION, READ, sizeof(int)); 383 _(GIO_CMAP, WRITE, 48); 384 _(GIO_FONT, WRITE, 8192); 385 _(GIO_SCRNMAP, WRITE, e_tabsz); 386 _(GIO_UNIMAP, WRITE, struct_unimapdesc_sz); 387 _(GIO_UNISCRNMAP, WRITE, sizeof(short) * e_tabsz); 388 _(KDADDIO, NONE, 0); 389 _(KDDELIO, NONE, 0); 390 _(KDDISABIO, NONE, 0); 391 _(KDENABIO, NONE, 0); 392 _(KDGETKEYCODE, WRITE, struct_kbkeycode_sz); 393 _(KDGETLED, WRITE, 1); 394 _(KDGETMODE, WRITE, sizeof(int)); 395 _(KDGKBDIACR, WRITE, struct_kbdiacrs_sz); 396 _(KDGKBENT, WRITE, struct_kbentry_sz); 397 _(KDGKBLED, WRITE, sizeof(int)); 398 _(KDGKBMETA, WRITE, sizeof(int)); 399 _(KDGKBMODE, WRITE, sizeof(int)); 400 _(KDGKBSENT, WRITE, struct_kbsentry_sz); 401 _(KDGKBTYPE, WRITE, 1); 402 _(KDMAPDISP, NONE, 0); 403 _(KDMKTONE, NONE, 0); 404 _(KDSETKEYCODE, READ, struct_kbkeycode_sz); 405 _(KDSETLED, NONE, 0); 406 _(KDSETMODE, NONE, 0); 407 _(KDSIGACCEPT, NONE, 0); 408 _(KDSKBDIACR, READ, struct_kbdiacrs_sz); 409 _(KDSKBENT, READ, struct_kbentry_sz); 410 _(KDSKBLED, NONE, 0); 411 _(KDSKBMETA, NONE, 0); 412 _(KDSKBMODE, NONE, 0); 413 _(KDSKBSENT, READ, struct_kbsentry_sz); 414 _(KDUNMAPDISP, NONE, 0); 415 _(KIOCSOUND, NONE, 0); 416 _(LPABORT, NONE, 0); 417 _(LPABORTOPEN, NONE, 0); 418 _(LPCAREFUL, NONE, 0); 419 _(LPCHAR, NONE, 0); 420 _(LPGETIRQ, WRITE, sizeof(int)); 421 _(LPGETSTATUS, WRITE, sizeof(int)); 422 _(LPRESET, NONE, 0); 423 _(LPSETIRQ, NONE, 0); 424 _(LPTIME, NONE, 0); 425 _(LPWAIT, NONE, 0); 426 _(MTIOCGETCONFIG, WRITE, struct_mtconfiginfo_sz); 427 _(MTIOCSETCONFIG, READ, struct_mtconfiginfo_sz); 428 _(PIO_CMAP, NONE, 0); 429 _(PIO_FONT, READ, 8192); 430 _(PIO_SCRNMAP, READ, e_tabsz); 431 _(PIO_UNIMAP, READ, struct_unimapdesc_sz); 432 _(PIO_UNIMAPCLR, READ, struct_unimapinit_sz); 433 _(PIO_UNISCRNMAP, READ, sizeof(short) * e_tabsz); 434 _(SCSI_IOCTL_PROBE_HOST, READ, sizeof(int)); 435 _(SCSI_IOCTL_TAGGED_DISABLE, NONE, 0); 436 _(SCSI_IOCTL_TAGGED_ENABLE, NONE, 0); 437 _(SNDCTL_DSP_GETISPACE, WRITE, struct_audio_buf_info_sz); 438 _(SNDCTL_DSP_GETOSPACE, WRITE, struct_audio_buf_info_sz); 439 _(TIOCGSERIAL, WRITE, struct_serial_struct_sz); 440 _(TIOCSERGETMULTI, WRITE, struct_serial_multiport_struct_sz); 441 _(TIOCSERSETMULTI, READ, struct_serial_multiport_struct_sz); 442 _(TIOCSSERIAL, READ, struct_serial_struct_sz); 443 444 // The following ioctl requests are shared between AX25, IPX, netrom and 445 // mrouted. 446 // _(SIOCAIPXITFCRT, READ, sizeof(char)); 447 // _(SIOCAX25GETUID, READ, struct_sockaddr_ax25_sz); 448 // _(SIOCNRGETPARMS, WRITE, struct_nr_parms_struct_sz); 449 // _(SIOCAIPXPRISLT, READ, sizeof(char)); 450 // _(SIOCNRSETPARMS, READ, struct_nr_parms_struct_sz); 451 // _(SIOCAX25ADDUID, READ, struct_sockaddr_ax25_sz); 452 // _(SIOCNRDECOBS, NONE, 0); 453 // _(SIOCAX25DELUID, READ, struct_sockaddr_ax25_sz); 454 // _(SIOCIPXCFGDATA, WRITE, struct_ipx_config_data_sz); 455 // _(SIOCAX25NOUID, READ, sizeof(int)); 456 // _(SIOCNRRTCTL, READ, sizeof(int)); 457 // _(SIOCAX25DIGCTL, READ, sizeof(int)); 458 // _(SIOCAX25GETPARMS, WRITE, struct_ax25_parms_struct_sz); 459 // _(SIOCAX25SETPARMS, READ, struct_ax25_parms_struct_sz); 460#endif 461#undef _ 462} 463 464static bool ioctl_initialized = false; 465 466struct ioctl_desc_compare { 467 bool operator()(const ioctl_desc& left, const ioctl_desc& right) const { 468 return left.req < right.req; 469 } 470}; 471 472static void ioctl_init() { 473 ioctl_table_fill(); 474 InternalSort(&ioctl_table, ioctl_table_size, ioctl_desc_compare()); 475 476 bool bad = false; 477 for (unsigned i = 0; i < ioctl_table_size - 1; ++i) { 478 if (ioctl_table[i].req >= ioctl_table[i + 1].req) { 479 Printf("Duplicate or unsorted ioctl request id %x >= %x (%s vs %s)\n", 480 ioctl_table[i].req, ioctl_table[i + 1].req, ioctl_table[i].name, 481 ioctl_table[i + 1].name); 482 bad = true; 483 } 484 } 485 486 if (bad) Die(); 487 488 ioctl_initialized = true; 489} 490 491// Handle the most evil ioctls that encode argument value as part of request id. 492static unsigned ioctl_request_fixup(unsigned req) { 493#if SANITIZER_LINUX 494 // Strip size and event number. 495 const unsigned kEviocgbitMask = 496 (IOC_SIZEMASK << IOC_SIZESHIFT) | EVIOC_EV_MAX; 497 if ((req & ~kEviocgbitMask) == IOCTL_EVIOCGBIT) 498 return IOCTL_EVIOCGBIT; 499 // Strip absolute axis number. 500 if ((req & ~EVIOC_ABS_MAX) == IOCTL_EVIOCGABS) 501 return IOCTL_EVIOCGABS; 502 if ((req & ~EVIOC_ABS_MAX) == IOCTL_EVIOCSABS) 503 return IOCTL_EVIOCSABS; 504#endif 505 return req; 506} 507 508static const ioctl_desc *ioctl_table_lookup(unsigned req) { 509 int left = 0; 510 int right = ioctl_table_size; 511 while (left < right) { 512 int mid = (left + right) / 2; 513 if (ioctl_table[mid].req < req) 514 left = mid + 1; 515 else 516 right = mid; 517 } 518 if (left == right && ioctl_table[left].req == req) 519 return ioctl_table + left; 520 else 521 return 0; 522} 523 524static bool ioctl_decode(unsigned req, ioctl_desc *desc) { 525 CHECK(desc); 526 desc->req = req; 527 desc->name = "<DECODED_IOCTL>"; 528 desc->size = IOC_SIZE(req); 529 // Sanity check. 530 if (desc->size > 0xFFFF) return false; 531 unsigned dir = IOC_DIR(req); 532 switch (dir) { 533 case IOC_NONE: 534 desc->type = ioctl_desc::NONE; 535 break; 536 case IOC_READ | IOC_WRITE: 537 desc->type = ioctl_desc::READWRITE; 538 break; 539 case IOC_READ: 540 desc->type = ioctl_desc::WRITE; 541 break; 542 case IOC_WRITE: 543 desc->type = ioctl_desc::READ; 544 break; 545 default: 546 return false; 547 } 548 // Size can be 0 iff type is NONE. 549 if ((desc->type == IOC_NONE) != (desc->size == 0)) return false; 550 // Sanity check. 551 if (IOC_TYPE(req) == 0) return false; 552 return true; 553} 554 555static const ioctl_desc *ioctl_lookup(unsigned req) { 556 req = ioctl_request_fixup(req); 557 const ioctl_desc *desc = ioctl_table_lookup(req); 558 if (desc) return desc; 559 560 // Try stripping access size from the request id. 561 desc = ioctl_table_lookup(req & ~(IOC_SIZEMASK << IOC_SIZESHIFT)); 562 // Sanity check: requests that encode access size are either read or write and 563 // have size of 0 in the table. 564 if (desc && desc->size == 0 && 565 (desc->type == ioctl_desc::READWRITE || desc->type == ioctl_desc::WRITE || 566 desc->type == ioctl_desc::READ)) 567 return desc; 568 return 0; 569} 570 571static void ioctl_common_pre(void *ctx, const ioctl_desc *desc, int d, 572 unsigned request, void *arg) { 573 if (desc->type == ioctl_desc::READ || desc->type == ioctl_desc::READWRITE) { 574 unsigned size = desc->size ? desc->size : IOC_SIZE(request); 575 COMMON_INTERCEPTOR_READ_RANGE(ctx, arg, size); 576 } 577 if (desc->type != ioctl_desc::CUSTOM) 578 return; 579 switch (request) { 580 case 0x00008912: { // SIOCGIFCONF 581 struct __sanitizer_ifconf *ifc = (__sanitizer_ifconf *)arg; 582 COMMON_INTERCEPTOR_READ_RANGE(ctx, &ifc->ifc_len, sizeof(ifc->ifc_len)); 583 break; 584 } 585 } 586 return; 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 switch (request) { 599 case 0x00008912: { // SIOCGIFCONF 600 struct __sanitizer_ifconf *ifc = (__sanitizer_ifconf *)arg; 601 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ifc->ifc_ifcu.ifcu_req, ifc->ifc_len); 602 break; 603 } 604 } 605 return; 606} 607