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