1//===-- sanitizer_common_interceptors_ioctl.inc -----------------*- C++ -*-===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8// 9// Ioctl handling in common sanitizer interceptors. 10//===----------------------------------------------------------------------===// 11 12#if !SANITIZER_NETBSD 13 14#include "sanitizer_flags.h" 15 16struct ioctl_desc { 17 unsigned req; 18 // FIXME: support read+write arguments. Currently READWRITE and WRITE do the 19 // same thing. 20 // XXX: The declarations below may use WRITE instead of READWRITE, unless 21 // explicitly noted. 22 enum { 23 NONE, 24 READ, 25 WRITE, 26 READWRITE, 27 CUSTOM 28 } type : 3; 29 unsigned size : 29; 30 const char* name; 31}; 32 33const unsigned ioctl_table_max = 500; 34static ioctl_desc ioctl_table[ioctl_table_max]; 35static unsigned ioctl_table_size = 0; 36 37// This can not be declared as a global, because references to struct_*_sz 38// require a global initializer. And this table must be available before global 39// initializers are run. 40static void ioctl_table_fill() { 41#define _(rq, tp, sz) \ 42 if (IOCTL_##rq != IOCTL_NOT_PRESENT) { \ 43 CHECK(ioctl_table_size < ioctl_table_max); \ 44 ioctl_table[ioctl_table_size].req = IOCTL_##rq; \ 45 ioctl_table[ioctl_table_size].type = ioctl_desc::tp; \ 46 ioctl_table[ioctl_table_size].size = sz; \ 47 ioctl_table[ioctl_table_size].name = #rq; \ 48 ++ioctl_table_size; \ 49 } 50 51 _(FIOASYNC, READ, sizeof(int)); 52 _(FIOCLEX, NONE, 0); 53 _(FIOGETOWN, WRITE, sizeof(int)); 54 _(FIONBIO, READ, sizeof(int)); 55 _(FIONCLEX, NONE, 0); 56 _(FIOSETOWN, READ, sizeof(int)); 57 _(SIOCATMARK, WRITE, sizeof(int)); 58 _(SIOCGIFCONF, CUSTOM, 0); 59 _(SIOCGPGRP, WRITE, sizeof(int)); 60 _(SIOCSPGRP, READ, sizeof(int)); 61#if !SANITIZER_SOLARIS 62 _(TIOCCONS, NONE, 0); 63#endif 64 _(TIOCEXCL, NONE, 0); 65 _(TIOCGETD, WRITE, sizeof(int)); 66 _(TIOCGPGRP, WRITE, pid_t_sz); 67 _(TIOCGWINSZ, WRITE, struct_winsize_sz); 68 _(TIOCMBIC, READ, sizeof(int)); 69 _(TIOCMBIS, READ, sizeof(int)); 70 _(TIOCMGET, WRITE, sizeof(int)); 71 _(TIOCMSET, READ, sizeof(int)); 72 _(TIOCNOTTY, NONE, 0); 73 _(TIOCNXCL, NONE, 0); 74 _(TIOCOUTQ, WRITE, sizeof(int)); 75 _(TIOCPKT, READ, sizeof(int)); 76 _(TIOCSCTTY, NONE, 0); 77 _(TIOCSETD, READ, sizeof(int)); 78 _(TIOCSPGRP, READ, pid_t_sz); 79 _(TIOCSTI, READ, sizeof(char)); 80 _(TIOCSWINSZ, READ, struct_winsize_sz); 81 82#if !SANITIZER_IOS 83 _(SIOCADDMULTI, READ, struct_ifreq_sz); 84 _(SIOCDELMULTI, READ, struct_ifreq_sz); 85 _(SIOCGIFADDR, WRITE, struct_ifreq_sz); 86 _(SIOCGIFBRDADDR, WRITE, struct_ifreq_sz); 87 _(SIOCGIFDSTADDR, WRITE, struct_ifreq_sz); 88 _(SIOCGIFFLAGS, WRITE, struct_ifreq_sz); 89 _(SIOCGIFMETRIC, WRITE, struct_ifreq_sz); 90 _(SIOCGIFMTU, WRITE, struct_ifreq_sz); 91 _(SIOCGIFNETMASK, WRITE, struct_ifreq_sz); 92 _(SIOCSIFADDR, READ, struct_ifreq_sz); 93 _(SIOCSIFBRDADDR, READ, struct_ifreq_sz); 94 _(SIOCSIFDSTADDR, READ, struct_ifreq_sz); 95 _(SIOCSIFFLAGS, READ, struct_ifreq_sz); 96 _(SIOCSIFMETRIC, READ, struct_ifreq_sz); 97 _(SIOCSIFMTU, READ, struct_ifreq_sz); 98 _(SIOCSIFNETMASK, READ, struct_ifreq_sz); 99#endif 100 101#if (SANITIZER_LINUX && !SANITIZER_ANDROID) 102 _(SIOCGETSGCNT, WRITE, struct_sioc_sg_req_sz); 103 _(SIOCGETVIFCNT, WRITE, struct_sioc_vif_req_sz); 104#endif 105 106#if SANITIZER_LINUX 107 // Conflicting request ids. 108 // _(CDROMAUDIOBUFSIZ, NONE, 0); 109 // _(SNDCTL_TMR_CONTINUE, NONE, 0); 110 // _(SNDCTL_TMR_START, NONE, 0); 111 // _(SNDCTL_TMR_STOP, NONE, 0); 112 // _(SOUND_MIXER_READ_LOUD, WRITE, sizeof(int)); // same as ...READ_ENHANCE 113 // _(SOUND_MIXER_READ_MUTE, WRITE, sizeof(int)); // same as ...READ_ENHANCE 114 // _(SOUND_MIXER_WRITE_LOUD, WRITE, sizeof(int)); // same as ...WRITE_ENHANCE 115 // _(SOUND_MIXER_WRITE_MUTE, WRITE, sizeof(int)); // same as ...WRITE_ENHANCE 116 _(BLKFLSBUF, NONE, 0); 117 _(BLKGETSIZE, WRITE, sizeof(uptr)); 118 _(BLKRAGET, WRITE, sizeof(int)); 119 _(BLKRASET, NONE, 0); 120 _(BLKROGET, WRITE, sizeof(int)); 121 _(BLKROSET, READ, sizeof(int)); 122 _(BLKRRPART, NONE, 0); 123 _(CDROMEJECT, NONE, 0); 124 _(CDROMEJECT_SW, NONE, 0); 125 _(CDROMMULTISESSION, WRITE, struct_cdrom_multisession_sz); 126 _(CDROMPAUSE, NONE, 0); 127 _(CDROMPLAYMSF, READ, struct_cdrom_msf_sz); 128 _(CDROMPLAYTRKIND, READ, struct_cdrom_ti_sz); 129 _(CDROMREADAUDIO, READ, struct_cdrom_read_audio_sz); 130 _(CDROMREADCOOKED, READ, struct_cdrom_msf_sz); 131 _(CDROMREADMODE1, READ, struct_cdrom_msf_sz); 132 _(CDROMREADMODE2, READ, struct_cdrom_msf_sz); 133 _(CDROMREADRAW, READ, struct_cdrom_msf_sz); 134 _(CDROMREADTOCENTRY, WRITE, struct_cdrom_tocentry_sz); 135 _(CDROMREADTOCHDR, WRITE, struct_cdrom_tochdr_sz); 136 _(CDROMRESET, NONE, 0); 137 _(CDROMRESUME, NONE, 0); 138 _(CDROMSEEK, READ, struct_cdrom_msf_sz); 139 _(CDROMSTART, NONE, 0); 140 _(CDROMSTOP, NONE, 0); 141 _(CDROMSUBCHNL, WRITE, struct_cdrom_subchnl_sz); 142 _(CDROMVOLCTRL, READ, struct_cdrom_volctrl_sz); 143 _(CDROMVOLREAD, WRITE, struct_cdrom_volctrl_sz); 144 _(CDROM_GET_UPC, WRITE, 8); 145 _(EVIOCGABS, WRITE, struct_input_absinfo_sz); // fixup 146 _(EVIOCGBIT, WRITE, struct_input_id_sz); // fixup 147 _(EVIOCGEFFECTS, WRITE, sizeof(int)); 148 _(EVIOCGID, WRITE, struct_input_id_sz); 149 _(EVIOCGKEY, WRITE, 0); 150 _(EVIOCGKEYCODE, WRITE, sizeof(int) * 2); 151 _(EVIOCGLED, WRITE, 0); 152 _(EVIOCGNAME, WRITE, 0); 153 _(EVIOCGPHYS, WRITE, 0); 154 _(EVIOCGRAB, READ, sizeof(int)); 155 _(EVIOCGREP, WRITE, sizeof(int) * 2); 156 _(EVIOCGSND, WRITE, 0); 157 _(EVIOCGSW, WRITE, 0); 158 _(EVIOCGUNIQ, WRITE, 0); 159 _(EVIOCGVERSION, WRITE, sizeof(int)); 160 _(EVIOCRMFF, READ, sizeof(int)); 161 _(EVIOCSABS, READ, struct_input_absinfo_sz); // fixup 162 _(EVIOCSFF, READ, struct_ff_effect_sz); 163 _(EVIOCSKEYCODE, READ, sizeof(int) * 2); 164 _(EVIOCSREP, READ, sizeof(int) * 2); 165 _(FDCLRPRM, NONE, 0); 166 _(FDDEFPRM, READ, struct_floppy_struct_sz); 167 _(FDFLUSH, NONE, 0); 168 _(FDFMTBEG, NONE, 0); 169 _(FDFMTEND, NONE, 0); 170 _(FDFMTTRK, READ, struct_format_descr_sz); 171 _(FDGETDRVPRM, WRITE, struct_floppy_drive_params_sz); 172 _(FDGETDRVSTAT, WRITE, struct_floppy_drive_struct_sz); 173 _(FDGETDRVTYP, WRITE, 16); 174 _(FDGETFDCSTAT, WRITE, struct_floppy_fdc_state_sz); 175 _(FDGETMAXERRS, WRITE, struct_floppy_max_errors_sz); 176 _(FDGETPRM, WRITE, struct_floppy_struct_sz); 177 _(FDMSGOFF, NONE, 0); 178 _(FDMSGON, NONE, 0); 179 _(FDPOLLDRVSTAT, WRITE, struct_floppy_drive_struct_sz); 180 _(FDRAWCMD, WRITE, struct_floppy_raw_cmd_sz); 181 _(FDRESET, NONE, 0); 182 _(FDSETDRVPRM, READ, struct_floppy_drive_params_sz); 183 _(FDSETEMSGTRESH, NONE, 0); 184 _(FDSETMAXERRS, READ, struct_floppy_max_errors_sz); 185 _(FDSETPRM, READ, struct_floppy_struct_sz); 186 _(FDTWADDLE, NONE, 0); 187 _(FDWERRORCLR, NONE, 0); 188 _(FDWERRORGET, WRITE, struct_floppy_write_errors_sz); 189 _(HDIO_DRIVE_CMD, WRITE, sizeof(int)); 190 _(HDIO_GETGEO, WRITE, struct_hd_geometry_sz); 191 _(HDIO_GET_32BIT, WRITE, sizeof(int)); 192 _(HDIO_GET_DMA, WRITE, sizeof(int)); 193 _(HDIO_GET_IDENTITY, WRITE, struct_hd_driveid_sz); 194 _(HDIO_GET_KEEPSETTINGS, WRITE, sizeof(int)); 195 _(HDIO_GET_MULTCOUNT, WRITE, sizeof(int)); 196 _(HDIO_GET_NOWERR, WRITE, sizeof(int)); 197 _(HDIO_GET_UNMASKINTR, WRITE, sizeof(int)); 198 _(HDIO_SET_32BIT, NONE, 0); 199 _(HDIO_SET_DMA, NONE, 0); 200 _(HDIO_SET_KEEPSETTINGS, NONE, 0); 201 _(HDIO_SET_MULTCOUNT, NONE, 0); 202 _(HDIO_SET_NOWERR, NONE, 0); 203 _(HDIO_SET_UNMASKINTR, NONE, 0); 204 _(MTIOCGET, WRITE, struct_mtget_sz); 205 _(MTIOCPOS, WRITE, struct_mtpos_sz); 206 _(MTIOCTOP, READ, struct_mtop_sz); 207 _(PPPIOCGASYNCMAP, WRITE, sizeof(int)); 208 _(PPPIOCGDEBUG, WRITE, sizeof(int)); 209 _(PPPIOCGFLAGS, WRITE, sizeof(int)); 210 _(PPPIOCGUNIT, WRITE, sizeof(int)); 211 _(PPPIOCGXASYNCMAP, WRITE, sizeof(int) * 8); 212 _(PPPIOCSASYNCMAP, READ, sizeof(int)); 213 _(PPPIOCSDEBUG, READ, sizeof(int)); 214 _(PPPIOCSFLAGS, READ, sizeof(int)); 215 _(PPPIOCSMAXCID, READ, sizeof(int)); 216 _(PPPIOCSMRU, READ, sizeof(int)); 217 _(PPPIOCSXASYNCMAP, READ, sizeof(int) * 8); 218 _(SIOCADDRT, READ, struct_rtentry_sz); 219 _(SIOCDARP, READ, struct_arpreq_sz); 220 _(SIOCDELRT, READ, struct_rtentry_sz); 221 _(SIOCDRARP, READ, struct_arpreq_sz); 222 _(SIOCGARP, WRITE, struct_arpreq_sz); 223 _(SIOCGIFENCAP, WRITE, sizeof(int)); 224 _(SIOCGIFHWADDR, WRITE, struct_ifreq_sz); 225 _(SIOCGIFMAP, WRITE, struct_ifreq_sz); 226 _(SIOCGIFMEM, WRITE, struct_ifreq_sz); 227 _(SIOCGIFNAME, NONE, 0); 228 _(SIOCGIFSLAVE, NONE, 0); 229 _(SIOCGRARP, WRITE, struct_arpreq_sz); 230 _(SIOCGSTAMP, WRITE, timeval_sz); 231 _(SIOCSARP, READ, struct_arpreq_sz); 232 _(SIOCSIFENCAP, READ, sizeof(int)); 233 _(SIOCSIFHWADDR, READ, struct_ifreq_sz); 234 _(SIOCSIFLINK, NONE, 0); 235 _(SIOCSIFMAP, READ, struct_ifreq_sz); 236 _(SIOCSIFMEM, READ, struct_ifreq_sz); 237 _(SIOCSIFSLAVE, NONE, 0); 238 _(SIOCSRARP, READ, struct_arpreq_sz); 239 _(SNDCTL_COPR_HALT, WRITE, struct_copr_debug_buf_sz); 240 _(SNDCTL_COPR_LOAD, READ, struct_copr_buffer_sz); 241 _(SNDCTL_COPR_RCODE, WRITE, struct_copr_debug_buf_sz); 242 _(SNDCTL_COPR_RCVMSG, WRITE, struct_copr_msg_sz); 243 _(SNDCTL_COPR_RDATA, WRITE, struct_copr_debug_buf_sz); 244 _(SNDCTL_COPR_RESET, NONE, 0); 245 _(SNDCTL_COPR_RUN, WRITE, struct_copr_debug_buf_sz); 246 _(SNDCTL_COPR_SENDMSG, READ, struct_copr_msg_sz); 247 _(SNDCTL_COPR_WCODE, READ, struct_copr_debug_buf_sz); 248 _(SNDCTL_COPR_WDATA, READ, struct_copr_debug_buf_sz); 249 _(SNDCTL_DSP_GETBLKSIZE, WRITE, sizeof(int)); 250 _(SNDCTL_DSP_GETFMTS, WRITE, sizeof(int)); 251 _(SNDCTL_DSP_NONBLOCK, NONE, 0); 252 _(SNDCTL_DSP_POST, NONE, 0); 253 _(SNDCTL_DSP_RESET, NONE, 0); 254 _(SNDCTL_DSP_SETFMT, WRITE, sizeof(int)); 255 _(SNDCTL_DSP_SETFRAGMENT, WRITE, sizeof(int)); 256 _(SNDCTL_DSP_SPEED, WRITE, sizeof(int)); 257 _(SNDCTL_DSP_STEREO, WRITE, sizeof(int)); 258 _(SNDCTL_DSP_SUBDIVIDE, WRITE, sizeof(int)); 259 _(SNDCTL_DSP_SYNC, NONE, 0); 260 _(SNDCTL_FM_4OP_ENABLE, READ, sizeof(int)); 261 _(SNDCTL_FM_LOAD_INSTR, READ, struct_sbi_instrument_sz); 262 _(SNDCTL_MIDI_INFO, WRITE, struct_midi_info_sz); 263 _(SNDCTL_MIDI_PRETIME, WRITE, sizeof(int)); 264 _(SNDCTL_SEQ_CTRLRATE, WRITE, sizeof(int)); 265 _(SNDCTL_SEQ_GETINCOUNT, WRITE, sizeof(int)); 266 _(SNDCTL_SEQ_GETOUTCOUNT, WRITE, sizeof(int)); 267 _(SNDCTL_SEQ_NRMIDIS, WRITE, sizeof(int)); 268 _(SNDCTL_SEQ_NRSYNTHS, WRITE, sizeof(int)); 269 _(SNDCTL_SEQ_OUTOFBAND, READ, struct_seq_event_rec_sz); 270 _(SNDCTL_SEQ_PANIC, NONE, 0); 271 _(SNDCTL_SEQ_PERCMODE, NONE, 0); 272 _(SNDCTL_SEQ_RESET, NONE, 0); 273 _(SNDCTL_SEQ_RESETSAMPLES, READ, sizeof(int)); 274 _(SNDCTL_SEQ_SYNC, NONE, 0); 275 _(SNDCTL_SEQ_TESTMIDI, READ, sizeof(int)); 276 _(SNDCTL_SEQ_THRESHOLD, READ, sizeof(int)); 277 _(SNDCTL_SYNTH_INFO, WRITE, struct_synth_info_sz); 278 _(SNDCTL_SYNTH_MEMAVL, WRITE, sizeof(int)); 279 _(SNDCTL_TMR_METRONOME, READ, sizeof(int)); 280 _(SNDCTL_TMR_SELECT, WRITE, sizeof(int)); 281 _(SNDCTL_TMR_SOURCE, WRITE, sizeof(int)); 282 _(SNDCTL_TMR_TEMPO, WRITE, sizeof(int)); 283 _(SNDCTL_TMR_TIMEBASE, WRITE, sizeof(int)); 284 _(SOUND_MIXER_READ_ALTPCM, WRITE, sizeof(int)); 285 _(SOUND_MIXER_READ_BASS, WRITE, sizeof(int)); 286 _(SOUND_MIXER_READ_CAPS, WRITE, sizeof(int)); 287 _(SOUND_MIXER_READ_CD, WRITE, sizeof(int)); 288 _(SOUND_MIXER_READ_DEVMASK, WRITE, sizeof(int)); 289 _(SOUND_MIXER_READ_ENHANCE, WRITE, sizeof(int)); 290 _(SOUND_MIXER_READ_IGAIN, WRITE, sizeof(int)); 291 _(SOUND_MIXER_READ_IMIX, WRITE, sizeof(int)); 292 _(SOUND_MIXER_READ_LINE, WRITE, sizeof(int)); 293 _(SOUND_MIXER_READ_LINE1, WRITE, sizeof(int)); 294 _(SOUND_MIXER_READ_LINE2, WRITE, sizeof(int)); 295 _(SOUND_MIXER_READ_LINE3, WRITE, sizeof(int)); 296 _(SOUND_MIXER_READ_MIC, WRITE, sizeof(int)); 297 _(SOUND_MIXER_READ_OGAIN, WRITE, sizeof(int)); 298 _(SOUND_MIXER_READ_PCM, WRITE, sizeof(int)); 299 _(SOUND_MIXER_READ_RECLEV, WRITE, sizeof(int)); 300 _(SOUND_MIXER_READ_RECMASK, WRITE, sizeof(int)); 301 _(SOUND_MIXER_READ_RECSRC, WRITE, sizeof(int)); 302 _(SOUND_MIXER_READ_SPEAKER, WRITE, sizeof(int)); 303 _(SOUND_MIXER_READ_STEREODEVS, WRITE, sizeof(int)); 304 _(SOUND_MIXER_READ_SYNTH, WRITE, sizeof(int)); 305 _(SOUND_MIXER_READ_TREBLE, WRITE, sizeof(int)); 306 _(SOUND_MIXER_READ_VOLUME, WRITE, sizeof(int)); 307 _(SOUND_MIXER_WRITE_ALTPCM, WRITE, sizeof(int)); 308 _(SOUND_MIXER_WRITE_BASS, WRITE, sizeof(int)); 309 _(SOUND_MIXER_WRITE_CD, WRITE, sizeof(int)); 310 _(SOUND_MIXER_WRITE_ENHANCE, WRITE, sizeof(int)); 311 _(SOUND_MIXER_WRITE_IGAIN, WRITE, sizeof(int)); 312 _(SOUND_MIXER_WRITE_IMIX, WRITE, sizeof(int)); 313 _(SOUND_MIXER_WRITE_LINE, WRITE, sizeof(int)); 314 _(SOUND_MIXER_WRITE_LINE1, WRITE, sizeof(int)); 315 _(SOUND_MIXER_WRITE_LINE2, WRITE, sizeof(int)); 316 _(SOUND_MIXER_WRITE_LINE3, WRITE, sizeof(int)); 317 _(SOUND_MIXER_WRITE_MIC, WRITE, sizeof(int)); 318 _(SOUND_MIXER_WRITE_OGAIN, WRITE, sizeof(int)); 319 _(SOUND_MIXER_WRITE_PCM, WRITE, sizeof(int)); 320 _(SOUND_MIXER_WRITE_RECLEV, WRITE, sizeof(int)); 321 _(SOUND_MIXER_WRITE_RECSRC, WRITE, sizeof(int)); 322 _(SOUND_MIXER_WRITE_SPEAKER, WRITE, sizeof(int)); 323 _(SOUND_MIXER_WRITE_SYNTH, WRITE, sizeof(int)); 324 _(SOUND_MIXER_WRITE_TREBLE, WRITE, sizeof(int)); 325 _(SOUND_MIXER_WRITE_VOLUME, WRITE, sizeof(int)); 326 _(SOUND_PCM_READ_BITS, WRITE, sizeof(int)); 327 _(SOUND_PCM_READ_CHANNELS, WRITE, sizeof(int)); 328 _(SOUND_PCM_READ_FILTER, WRITE, sizeof(int)); 329 _(SOUND_PCM_READ_RATE, WRITE, sizeof(int)); 330 _(SOUND_PCM_WRITE_CHANNELS, WRITE, sizeof(int)); 331 _(SOUND_PCM_WRITE_FILTER, WRITE, sizeof(int)); 332 _(TCFLSH, NONE, 0); 333 _(TCGETA, WRITE, struct_termio_sz); 334 _(TCGETS, WRITE, struct_termios_sz); 335 _(TCSBRK, NONE, 0); 336 _(TCSBRKP, NONE, 0); 337 _(TCSETA, READ, struct_termio_sz); 338 _(TCSETAF, READ, struct_termio_sz); 339 _(TCSETAW, READ, struct_termio_sz); 340 _(TCSETS, READ, struct_termios_sz); 341 _(TCSETSF, READ, struct_termios_sz); 342 _(TCSETSW, READ, struct_termios_sz); 343 _(TCXONC, NONE, 0); 344 _(TIOCGLCKTRMIOS, WRITE, struct_termios_sz); 345 _(TIOCGSOFTCAR, WRITE, sizeof(int)); 346 _(TIOCINQ, WRITE, sizeof(int)); 347 _(TIOCLINUX, READ, sizeof(char)); 348 _(TIOCSERCONFIG, NONE, 0); 349 _(TIOCSERGETLSR, WRITE, sizeof(int)); 350 _(TIOCSERGWILD, WRITE, sizeof(int)); 351 _(TIOCSERSWILD, READ, sizeof(int)); 352 _(TIOCSLCKTRMIOS, READ, struct_termios_sz); 353 _(TIOCSSOFTCAR, READ, sizeof(int)); 354 _(VT_ACTIVATE, NONE, 0); 355 _(VT_DISALLOCATE, NONE, 0); 356 _(VT_GETMODE, WRITE, struct_vt_mode_sz); 357 _(VT_GETSTATE, WRITE, struct_vt_stat_sz); 358 _(VT_OPENQRY, WRITE, sizeof(int)); 359 _(VT_RELDISP, NONE, 0); 360 _(VT_RESIZE, READ, struct_vt_sizes_sz); 361 _(VT_RESIZEX, READ, struct_vt_consize_sz); 362 _(VT_SENDSIG, NONE, 0); 363 _(VT_SETMODE, READ, struct_vt_mode_sz); 364 _(VT_WAITACTIVE, NONE, 0); 365#endif 366 367#if SANITIZER_LINUX && !SANITIZER_ANDROID 368 // _(SIOCDEVPLIP, WRITE, struct_ifreq_sz); // the same as EQL_ENSLAVE 369 _(CYGETDEFTHRESH, WRITE, sizeof(int)); 370 _(CYGETDEFTIMEOUT, WRITE, sizeof(int)); 371 _(CYGETMON, WRITE, struct_cyclades_monitor_sz); 372 _(CYGETTHRESH, WRITE, sizeof(int)); 373 _(CYGETTIMEOUT, WRITE, sizeof(int)); 374 _(CYSETDEFTHRESH, NONE, 0); 375 _(CYSETDEFTIMEOUT, NONE, 0); 376 _(CYSETTHRESH, NONE, 0); 377 _(CYSETTIMEOUT, NONE, 0); 378 _(EQL_EMANCIPATE, WRITE, struct_ifreq_sz); 379 _(EQL_ENSLAVE, WRITE, struct_ifreq_sz); 380 _(EQL_GETMASTRCFG, WRITE, struct_ifreq_sz); 381 _(EQL_GETSLAVECFG, WRITE, struct_ifreq_sz); 382 _(EQL_SETMASTRCFG, WRITE, struct_ifreq_sz); 383 _(EQL_SETSLAVECFG, WRITE, struct_ifreq_sz); 384 _(EVIOCGKEYCODE_V2, WRITE, struct_input_keymap_entry_sz); 385 _(EVIOCGPROP, WRITE, 0); 386 _(EVIOCSKEYCODE_V2, READ, struct_input_keymap_entry_sz); 387 _(FS_IOC_GETFLAGS, WRITE, sizeof(int)); 388 _(FS_IOC_GETVERSION, WRITE, sizeof(int)); 389 _(FS_IOC_SETFLAGS, READ, sizeof(int)); 390 _(FS_IOC_SETVERSION, READ, sizeof(int)); 391 _(GIO_CMAP, WRITE, 48); 392 _(GIO_FONT, WRITE, 8192); 393 _(GIO_SCRNMAP, WRITE, e_tabsz); 394 _(GIO_UNIMAP, WRITE, struct_unimapdesc_sz); 395 _(GIO_UNISCRNMAP, WRITE, sizeof(short) * e_tabsz); 396 _(KDADDIO, NONE, 0); 397 _(KDDELIO, NONE, 0); 398 _(KDDISABIO, NONE, 0); 399 _(KDENABIO, NONE, 0); 400 _(KDGETKEYCODE, WRITE, struct_kbkeycode_sz); 401 _(KDGETLED, WRITE, 1); 402 _(KDGETMODE, WRITE, sizeof(int)); 403 _(KDGKBDIACR, WRITE, struct_kbdiacrs_sz); 404 _(KDGKBENT, WRITE, struct_kbentry_sz); 405 _(KDGKBLED, WRITE, sizeof(int)); 406 _(KDGKBMETA, WRITE, sizeof(int)); 407 _(KDGKBMODE, WRITE, sizeof(int)); 408 _(KDGKBSENT, WRITE, struct_kbsentry_sz); 409 _(KDGKBTYPE, WRITE, 1); 410 _(KDMAPDISP, NONE, 0); 411 _(KDMKTONE, NONE, 0); 412 _(KDSETKEYCODE, READ, struct_kbkeycode_sz); 413 _(KDSETLED, NONE, 0); 414 _(KDSETMODE, NONE, 0); 415 _(KDSIGACCEPT, NONE, 0); 416 _(KDSKBDIACR, READ, struct_kbdiacrs_sz); 417 _(KDSKBENT, READ, struct_kbentry_sz); 418 _(KDSKBLED, NONE, 0); 419 _(KDSKBMETA, NONE, 0); 420 _(KDSKBMODE, NONE, 0); 421 _(KDSKBSENT, READ, struct_kbsentry_sz); 422 _(KDUNMAPDISP, NONE, 0); 423 _(KIOCSOUND, NONE, 0); 424 _(LPABORT, NONE, 0); 425 _(LPABORTOPEN, NONE, 0); 426 _(LPCAREFUL, NONE, 0); 427 _(LPCHAR, NONE, 0); 428 _(LPGETIRQ, WRITE, sizeof(int)); 429 _(LPGETSTATUS, WRITE, sizeof(int)); 430 _(LPRESET, NONE, 0); 431 _(LPSETIRQ, NONE, 0); 432 _(LPTIME, NONE, 0); 433 _(LPWAIT, NONE, 0); 434 _(MTIOCGETCONFIG, WRITE, struct_mtconfiginfo_sz); 435 _(MTIOCSETCONFIG, READ, struct_mtconfiginfo_sz); 436 _(PIO_CMAP, NONE, 0); 437 _(PIO_FONT, READ, 8192); 438 _(PIO_SCRNMAP, READ, e_tabsz); 439 _(PIO_UNIMAP, READ, struct_unimapdesc_sz); 440 _(PIO_UNIMAPCLR, READ, struct_unimapinit_sz); 441 _(PIO_UNISCRNMAP, READ, sizeof(short) * e_tabsz); 442 _(SCSI_IOCTL_PROBE_HOST, READ, sizeof(int)); 443 _(SCSI_IOCTL_TAGGED_DISABLE, NONE, 0); 444 _(SCSI_IOCTL_TAGGED_ENABLE, NONE, 0); 445 _(SNDCTL_DSP_GETISPACE, WRITE, struct_audio_buf_info_sz); 446 _(SNDCTL_DSP_GETOSPACE, WRITE, struct_audio_buf_info_sz); 447 _(TIOCGSERIAL, WRITE, struct_serial_struct_sz); 448 _(TIOCSERGETMULTI, WRITE, struct_serial_multiport_struct_sz); 449 _(TIOCSERSETMULTI, READ, struct_serial_multiport_struct_sz); 450 _(TIOCSSERIAL, READ, struct_serial_struct_sz); 451 452 // The following ioctl requests are shared between AX25, IPX, netrom and 453 // mrouted. 454 // _(SIOCAIPXITFCRT, READ, sizeof(char)); 455 // _(SIOCAX25GETUID, READ, struct_sockaddr_ax25_sz); 456 // _(SIOCNRGETPARMS, WRITE, struct_nr_parms_struct_sz); 457 // _(SIOCAIPXPRISLT, READ, sizeof(char)); 458 // _(SIOCNRSETPARMS, READ, struct_nr_parms_struct_sz); 459 // _(SIOCAX25ADDUID, READ, struct_sockaddr_ax25_sz); 460 // _(SIOCNRDECOBS, NONE, 0); 461 // _(SIOCAX25DELUID, READ, struct_sockaddr_ax25_sz); 462 // _(SIOCIPXCFGDATA, WRITE, struct_ipx_config_data_sz); 463 // _(SIOCAX25NOUID, READ, sizeof(int)); 464 // _(SIOCNRRTCTL, READ, sizeof(int)); 465 // _(SIOCAX25DIGCTL, READ, sizeof(int)); 466 // _(SIOCAX25GETPARMS, WRITE, struct_ax25_parms_struct_sz); 467 // _(SIOCAX25SETPARMS, READ, struct_ax25_parms_struct_sz); 468#endif 469#undef _ 470} 471 472static bool ioctl_initialized = false; 473 474struct ioctl_desc_compare { 475 bool operator()(const ioctl_desc& left, const ioctl_desc& right) const { 476 return left.req < right.req; 477 } 478}; 479 480static void ioctl_init() { 481 ioctl_table_fill(); 482 Sort(ioctl_table, ioctl_table_size, ioctl_desc_compare()); 483 484 bool bad = false; 485 for (unsigned i = 0; i < ioctl_table_size - 1; ++i) { 486 if (ioctl_table[i].req >= ioctl_table[i + 1].req) { 487 Printf("Duplicate or unsorted ioctl request id %x >= %x (%s vs %s)\n", 488 ioctl_table[i].req, ioctl_table[i + 1].req, ioctl_table[i].name, 489 ioctl_table[i + 1].name); 490 bad = true; 491 } 492 } 493 494 if (bad) Die(); 495 496 ioctl_initialized = true; 497} 498 499// Handle the most evil ioctls that encode argument value as part of request id. 500static unsigned ioctl_request_fixup(unsigned req) { 501#if SANITIZER_LINUX 502 // Strip size and event number. 503 const unsigned kEviocgbitMask = 504 (IOC_SIZEMASK << IOC_SIZESHIFT) | EVIOC_EV_MAX; 505 if ((req & ~kEviocgbitMask) == IOCTL_EVIOCGBIT) 506 return IOCTL_EVIOCGBIT; 507 // Strip absolute axis number. 508 if ((req & ~EVIOC_ABS_MAX) == IOCTL_EVIOCGABS) 509 return IOCTL_EVIOCGABS; 510 if ((req & ~EVIOC_ABS_MAX) == IOCTL_EVIOCSABS) 511 return IOCTL_EVIOCSABS; 512#endif 513 return req; 514} 515 516static const ioctl_desc *ioctl_table_lookup(unsigned req) { 517 int left = 0; 518 int right = ioctl_table_size; 519 while (left < right) { 520 int mid = (left + right) / 2; 521 if (ioctl_table[mid].req < req) 522 left = mid + 1; 523 else 524 right = mid; 525 } 526 if (left == right && ioctl_table[left].req == req) 527 return ioctl_table + left; 528 else 529 return nullptr; 530} 531 532static bool ioctl_decode(unsigned req, ioctl_desc *desc) { 533 CHECK(desc); 534 desc->req = req; 535 desc->name = "<DECODED_IOCTL>"; 536 desc->size = IOC_SIZE(req); 537 // Sanity check. 538 if (desc->size > 0xFFFF) return false; 539 unsigned dir = IOC_DIR(req); 540 switch (dir) { 541 case IOC_NONE: 542 desc->type = ioctl_desc::NONE; 543 break; 544 case IOC_READ | IOC_WRITE: 545 desc->type = ioctl_desc::READWRITE; 546 break; 547 case IOC_READ: 548 desc->type = ioctl_desc::WRITE; 549 break; 550 case IOC_WRITE: 551 desc->type = ioctl_desc::READ; 552 break; 553 default: 554 return false; 555 } 556 // Size can be 0 iff type is NONE. 557 if ((desc->type == IOC_NONE) != (desc->size == 0)) return false; 558 // Sanity check. 559 if (IOC_TYPE(req) == 0) return false; 560 return true; 561} 562 563static const ioctl_desc *ioctl_lookup(unsigned req) { 564 req = ioctl_request_fixup(req); 565 const ioctl_desc *desc = ioctl_table_lookup(req); 566 if (desc) return desc; 567 568 // Try stripping access size from the request id. 569 desc = ioctl_table_lookup(req & ~(IOC_SIZEMASK << IOC_SIZESHIFT)); 570 // Sanity check: requests that encode access size are either read or write and 571 // have size of 0 in the table. 572 if (desc && desc->size == 0 && 573 (desc->type == ioctl_desc::READWRITE || desc->type == ioctl_desc::WRITE || 574 desc->type == ioctl_desc::READ)) 575 return desc; 576 return nullptr; 577} 578 579static void ioctl_common_pre(void *ctx, const ioctl_desc *desc, int d, 580 unsigned request, void *arg) { 581 if (desc->type == ioctl_desc::READ || desc->type == ioctl_desc::READWRITE) { 582 unsigned size = desc->size ? desc->size : IOC_SIZE(request); 583 COMMON_INTERCEPTOR_READ_RANGE(ctx, arg, size); 584 } 585 if (desc->type != ioctl_desc::CUSTOM) 586 return; 587 if (request == IOCTL_SIOCGIFCONF) { 588 struct __sanitizer_ifconf *ifc = (__sanitizer_ifconf *)arg; 589 COMMON_INTERCEPTOR_READ_RANGE(ctx, (char*)&ifc->ifc_len, 590 sizeof(ifc->ifc_len)); 591 } 592} 593 594static void ioctl_common_post(void *ctx, const ioctl_desc *desc, int res, int d, 595 unsigned request, void *arg) { 596 if (desc->type == ioctl_desc::WRITE || desc->type == ioctl_desc::READWRITE) { 597 // FIXME: add verbose output 598 unsigned size = desc->size ? desc->size : IOC_SIZE(request); 599 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, arg, size); 600 } 601 if (desc->type != ioctl_desc::CUSTOM) 602 return; 603 if (request == IOCTL_SIOCGIFCONF) { 604 struct __sanitizer_ifconf *ifc = (__sanitizer_ifconf *)arg; 605 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ifc->ifc_ifcu.ifcu_req, ifc->ifc_len); 606 } 607} 608 609#endif 610