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gcc/libsanitizer/sanitizer_common/sanitizer_common_interceptors_ioctl.inc

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//===-- sanitizer_common_interceptors_ioctl.inc -----------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Ioctl handling in common sanitizer interceptors.
//===----------------------------------------------------------------------===//
#if !SANITIZER_NETBSD
#include "sanitizer_flags.h"
struct ioctl_desc {
unsigned req;
// FIXME: support read+write arguments. Currently READWRITE and WRITE do the
// same thing.
// XXX: The declarations below may use WRITE instead of READWRITE, unless
// explicitly noted.
enum {
NONE,
READ,
WRITE,
READWRITE,
CUSTOM
} type : 3;
unsigned size : 29;
const char* name;
};
const unsigned ioctl_table_max = 500;
static ioctl_desc ioctl_table[ioctl_table_max];
static unsigned ioctl_table_size = 0;
// This can not be declared as a global, because references to struct_*_sz
// require a global initializer. And this table must be available before global
// initializers are run.
static void ioctl_table_fill() {
#define _(rq, tp, sz) \
if (IOCTL_##rq != IOCTL_NOT_PRESENT) { \
CHECK(ioctl_table_size < ioctl_table_max); \
ioctl_table[ioctl_table_size].req = IOCTL_##rq; \
ioctl_table[ioctl_table_size].type = ioctl_desc::tp; \
ioctl_table[ioctl_table_size].size = sz; \
ioctl_table[ioctl_table_size].name = #rq; \
++ioctl_table_size; \
}
_(FIOASYNC, READ, sizeof(int));
_(FIOCLEX, NONE, 0);
_(FIOGETOWN, WRITE, sizeof(int));
_(FIONBIO, READ, sizeof(int));
_(FIONCLEX, NONE, 0);
_(FIOSETOWN, READ, sizeof(int));
_(SIOCATMARK, WRITE, sizeof(int));
_(SIOCGIFCONF, CUSTOM, 0);
_(SIOCGPGRP, WRITE, sizeof(int));
_(SIOCSPGRP, READ, sizeof(int));
#if !SANITIZER_SOLARIS
_(TIOCCONS, NONE, 0);
#endif
_(TIOCEXCL, NONE, 0);
_(TIOCGETD, WRITE, sizeof(int));
_(TIOCGPGRP, WRITE, pid_t_sz);
_(TIOCGWINSZ, WRITE, struct_winsize_sz);
_(TIOCMBIC, READ, sizeof(int));
_(TIOCMBIS, READ, sizeof(int));
_(TIOCMGET, WRITE, sizeof(int));
_(TIOCMSET, READ, sizeof(int));
_(TIOCNOTTY, NONE, 0);
_(TIOCNXCL, NONE, 0);
_(TIOCOUTQ, WRITE, sizeof(int));
_(TIOCPKT, READ, sizeof(int));
_(TIOCSCTTY, NONE, 0);
_(TIOCSETD, READ, sizeof(int));
_(TIOCSPGRP, READ, pid_t_sz);
_(TIOCSTI, READ, sizeof(char));
_(TIOCSWINSZ, READ, struct_winsize_sz);
#if !SANITIZER_IOS
_(SIOCADDMULTI, READ, struct_ifreq_sz);
_(SIOCDELMULTI, READ, struct_ifreq_sz);
_(SIOCGIFADDR, WRITE, struct_ifreq_sz);
_(SIOCGIFBRDADDR, WRITE, struct_ifreq_sz);
_(SIOCGIFDSTADDR, WRITE, struct_ifreq_sz);
_(SIOCGIFFLAGS, WRITE, struct_ifreq_sz);
_(SIOCGIFMETRIC, WRITE, struct_ifreq_sz);
_(SIOCGIFMTU, WRITE, struct_ifreq_sz);
_(SIOCGIFNETMASK, WRITE, struct_ifreq_sz);
_(SIOCSIFADDR, READ, struct_ifreq_sz);
_(SIOCSIFBRDADDR, READ, struct_ifreq_sz);
_(SIOCSIFDSTADDR, READ, struct_ifreq_sz);
_(SIOCSIFFLAGS, READ, struct_ifreq_sz);
_(SIOCSIFMETRIC, READ, struct_ifreq_sz);
_(SIOCSIFMTU, READ, struct_ifreq_sz);
_(SIOCSIFNETMASK, READ, struct_ifreq_sz);
#endif
#if (SANITIZER_LINUX && !SANITIZER_ANDROID)
_(SIOCGETSGCNT, WRITE, struct_sioc_sg_req_sz);
_(SIOCGETVIFCNT, WRITE, struct_sioc_vif_req_sz);
#endif
#if SANITIZER_LINUX
// Conflicting request ids.
// _(CDROMAUDIOBUFSIZ, NONE, 0);
// _(SNDCTL_TMR_CONTINUE, NONE, 0);
// _(SNDCTL_TMR_START, NONE, 0);
// _(SNDCTL_TMR_STOP, NONE, 0);
// _(SOUND_MIXER_READ_LOUD, WRITE, sizeof(int)); // same as ...READ_ENHANCE
// _(SOUND_MIXER_READ_MUTE, WRITE, sizeof(int)); // same as ...READ_ENHANCE
// _(SOUND_MIXER_WRITE_LOUD, WRITE, sizeof(int)); // same as ...WRITE_ENHANCE
// _(SOUND_MIXER_WRITE_MUTE, WRITE, sizeof(int)); // same as ...WRITE_ENHANCE
_(BLKFLSBUF, NONE, 0);
_(BLKGETSIZE, WRITE, sizeof(uptr));
_(BLKRAGET, WRITE, sizeof(uptr));
_(BLKRASET, NONE, 0);
_(BLKROGET, WRITE, sizeof(int));
_(BLKROSET, READ, sizeof(int));
_(BLKRRPART, NONE, 0);
_(BLKFRASET, NONE, 0);
_(BLKFRAGET, WRITE, sizeof(uptr));
_(BLKSECTSET, READ, sizeof(short));
_(BLKSECTGET, WRITE, sizeof(short));
_(BLKSSZGET, WRITE, sizeof(int));
_(BLKBSZGET, WRITE, sizeof(int));
_(BLKBSZSET, READ, sizeof(uptr));
_(BLKGETSIZE64, WRITE, sizeof(u64));
_(CDROMEJECT, NONE, 0);
_(CDROMEJECT_SW, NONE, 0);
_(CDROMMULTISESSION, WRITE, struct_cdrom_multisession_sz);
_(CDROMPAUSE, NONE, 0);
_(CDROMPLAYMSF, READ, struct_cdrom_msf_sz);
_(CDROMPLAYTRKIND, READ, struct_cdrom_ti_sz);
_(CDROMREADAUDIO, READ, struct_cdrom_read_audio_sz);
_(CDROMREADCOOKED, READ, struct_cdrom_msf_sz);
_(CDROMREADMODE1, READ, struct_cdrom_msf_sz);
_(CDROMREADMODE2, READ, struct_cdrom_msf_sz);
_(CDROMREADRAW, READ, struct_cdrom_msf_sz);
_(CDROMREADTOCENTRY, WRITE, struct_cdrom_tocentry_sz);
_(CDROMREADTOCHDR, WRITE, struct_cdrom_tochdr_sz);
_(CDROMRESET, NONE, 0);
_(CDROMRESUME, NONE, 0);
_(CDROMSEEK, READ, struct_cdrom_msf_sz);
_(CDROMSTART, NONE, 0);
_(CDROMSTOP, NONE, 0);
_(CDROMSUBCHNL, WRITE, struct_cdrom_subchnl_sz);
_(CDROMVOLCTRL, READ, struct_cdrom_volctrl_sz);
_(CDROMVOLREAD, WRITE, struct_cdrom_volctrl_sz);
_(CDROM_GET_UPC, WRITE, 8);
_(EVIOCGABS, WRITE, struct_input_absinfo_sz); // fixup
_(EVIOCGBIT, WRITE, struct_input_id_sz); // fixup
_(EVIOCGEFFECTS, WRITE, sizeof(int));
_(EVIOCGID, WRITE, struct_input_id_sz);
_(EVIOCGKEY, WRITE, 0);
_(EVIOCGKEYCODE, WRITE, sizeof(int) * 2);
_(EVIOCGLED, WRITE, 0);
_(EVIOCGNAME, WRITE, 0);
_(EVIOCGPHYS, WRITE, 0);
_(EVIOCGRAB, READ, sizeof(int));
_(EVIOCGREP, WRITE, sizeof(int) * 2);
_(EVIOCGSND, WRITE, 0);
_(EVIOCGSW, WRITE, 0);
_(EVIOCGUNIQ, WRITE, 0);
_(EVIOCGVERSION, WRITE, sizeof(int));
_(EVIOCRMFF, READ, sizeof(int));
_(EVIOCSABS, READ, struct_input_absinfo_sz); // fixup
_(EVIOCSFF, READ, struct_ff_effect_sz);
_(EVIOCSKEYCODE, READ, sizeof(int) * 2);
_(EVIOCSREP, READ, sizeof(int) * 2);
_(FDCLRPRM, NONE, 0);
_(FDDEFPRM, READ, struct_floppy_struct_sz);
_(FDFLUSH, NONE, 0);
_(FDFMTBEG, NONE, 0);
_(FDFMTEND, NONE, 0);
_(FDFMTTRK, READ, struct_format_descr_sz);
_(FDGETDRVPRM, WRITE, struct_floppy_drive_params_sz);
_(FDGETDRVSTAT, WRITE, struct_floppy_drive_struct_sz);
_(FDGETDRVTYP, WRITE, 16);
_(FDGETFDCSTAT, WRITE, struct_floppy_fdc_state_sz);
_(FDGETMAXERRS, WRITE, struct_floppy_max_errors_sz);
_(FDGETPRM, WRITE, struct_floppy_struct_sz);
_(FDMSGOFF, NONE, 0);
_(FDMSGON, NONE, 0);
_(FDPOLLDRVSTAT, WRITE, struct_floppy_drive_struct_sz);
_(FDRAWCMD, WRITE, struct_floppy_raw_cmd_sz);
_(FDRESET, NONE, 0);
_(FDSETDRVPRM, READ, struct_floppy_drive_params_sz);
_(FDSETEMSGTRESH, NONE, 0);
_(FDSETMAXERRS, READ, struct_floppy_max_errors_sz);
_(FDSETPRM, READ, struct_floppy_struct_sz);
_(FDTWADDLE, NONE, 0);
_(FDWERRORCLR, NONE, 0);
_(FDWERRORGET, WRITE, struct_floppy_write_errors_sz);
_(HDIO_DRIVE_CMD, WRITE, sizeof(int));
_(HDIO_GETGEO, WRITE, struct_hd_geometry_sz);
_(HDIO_GET_32BIT, WRITE, sizeof(int));
_(HDIO_GET_DMA, WRITE, sizeof(int));
_(HDIO_GET_IDENTITY, WRITE, struct_hd_driveid_sz);
_(HDIO_GET_KEEPSETTINGS, WRITE, sizeof(int));
_(HDIO_GET_MULTCOUNT, WRITE, sizeof(int));
_(HDIO_GET_NOWERR, WRITE, sizeof(int));
_(HDIO_GET_UNMASKINTR, WRITE, sizeof(int));
_(HDIO_SET_32BIT, NONE, 0);
_(HDIO_SET_DMA, NONE, 0);
_(HDIO_SET_KEEPSETTINGS, NONE, 0);
_(HDIO_SET_MULTCOUNT, NONE, 0);
_(HDIO_SET_NOWERR, NONE, 0);
_(HDIO_SET_UNMASKINTR, NONE, 0);
_(MTIOCGET, WRITE, struct_mtget_sz);
_(MTIOCPOS, WRITE, struct_mtpos_sz);
_(MTIOCTOP, READ, struct_mtop_sz);
_(PPPIOCGASYNCMAP, WRITE, sizeof(int));
_(PPPIOCGDEBUG, WRITE, sizeof(int));
_(PPPIOCGFLAGS, WRITE, sizeof(int));
_(PPPIOCGUNIT, WRITE, sizeof(int));
_(PPPIOCGXASYNCMAP, WRITE, sizeof(int) * 8);
_(PPPIOCSASYNCMAP, READ, sizeof(int));
_(PPPIOCSDEBUG, READ, sizeof(int));
_(PPPIOCSFLAGS, READ, sizeof(int));
_(PPPIOCSMAXCID, READ, sizeof(int));
_(PPPIOCSMRU, READ, sizeof(int));
_(PPPIOCSXASYNCMAP, READ, sizeof(int) * 8);
_(SIOCADDRT, READ, struct_rtentry_sz);
_(SIOCDARP, READ, struct_arpreq_sz);
_(SIOCDELRT, READ, struct_rtentry_sz);
_(SIOCDRARP, READ, struct_arpreq_sz);
_(SIOCGARP, WRITE, struct_arpreq_sz);
_(SIOCGIFENCAP, WRITE, sizeof(int));
_(SIOCGIFHWADDR, WRITE, struct_ifreq_sz);
_(SIOCGIFMAP, WRITE, struct_ifreq_sz);
_(SIOCGIFMEM, WRITE, struct_ifreq_sz);
_(SIOCGIFNAME, NONE, 0);
_(SIOCGIFSLAVE, NONE, 0);
_(SIOCGRARP, WRITE, struct_arpreq_sz);
_(SIOCGSTAMP, WRITE, timeval_sz);
_(SIOCSARP, READ, struct_arpreq_sz);
_(SIOCSIFENCAP, READ, sizeof(int));
_(SIOCSIFHWADDR, READ, struct_ifreq_sz);
_(SIOCSIFLINK, NONE, 0);
_(SIOCSIFMAP, READ, struct_ifreq_sz);
_(SIOCSIFMEM, READ, struct_ifreq_sz);
_(SIOCSIFSLAVE, NONE, 0);
_(SIOCSRARP, READ, struct_arpreq_sz);
_(SNDCTL_COPR_HALT, WRITE, struct_copr_debug_buf_sz);
_(SNDCTL_COPR_LOAD, READ, struct_copr_buffer_sz);
_(SNDCTL_COPR_RCODE, WRITE, struct_copr_debug_buf_sz);
_(SNDCTL_COPR_RCVMSG, WRITE, struct_copr_msg_sz);
_(SNDCTL_COPR_RDATA, WRITE, struct_copr_debug_buf_sz);
_(SNDCTL_COPR_RESET, NONE, 0);
_(SNDCTL_COPR_RUN, WRITE, struct_copr_debug_buf_sz);
_(SNDCTL_COPR_SENDMSG, READ, struct_copr_msg_sz);
_(SNDCTL_COPR_WCODE, READ, struct_copr_debug_buf_sz);
_(SNDCTL_COPR_WDATA, READ, struct_copr_debug_buf_sz);
_(SNDCTL_DSP_GETBLKSIZE, WRITE, sizeof(int));
_(SNDCTL_DSP_GETFMTS, WRITE, sizeof(int));
_(SNDCTL_DSP_NONBLOCK, NONE, 0);
_(SNDCTL_DSP_POST, NONE, 0);
_(SNDCTL_DSP_RESET, NONE, 0);
_(SNDCTL_DSP_SETFMT, WRITE, sizeof(int));
_(SNDCTL_DSP_SETFRAGMENT, WRITE, sizeof(int));
_(SNDCTL_DSP_SPEED, WRITE, sizeof(int));
_(SNDCTL_DSP_STEREO, WRITE, sizeof(int));
_(SNDCTL_DSP_SUBDIVIDE, WRITE, sizeof(int));
_(SNDCTL_DSP_SYNC, NONE, 0);
_(SNDCTL_FM_4OP_ENABLE, READ, sizeof(int));
_(SNDCTL_FM_LOAD_INSTR, READ, struct_sbi_instrument_sz);
_(SNDCTL_MIDI_INFO, WRITE, struct_midi_info_sz);
_(SNDCTL_MIDI_PRETIME, WRITE, sizeof(int));
_(SNDCTL_SEQ_CTRLRATE, WRITE, sizeof(int));
_(SNDCTL_SEQ_GETINCOUNT, WRITE, sizeof(int));
_(SNDCTL_SEQ_GETOUTCOUNT, WRITE, sizeof(int));
_(SNDCTL_SEQ_NRMIDIS, WRITE, sizeof(int));
_(SNDCTL_SEQ_NRSYNTHS, WRITE, sizeof(int));
_(SNDCTL_SEQ_OUTOFBAND, READ, struct_seq_event_rec_sz);
_(SNDCTL_SEQ_PANIC, NONE, 0);
_(SNDCTL_SEQ_PERCMODE, NONE, 0);
_(SNDCTL_SEQ_RESET, NONE, 0);
_(SNDCTL_SEQ_RESETSAMPLES, READ, sizeof(int));
_(SNDCTL_SEQ_SYNC, NONE, 0);
_(SNDCTL_SEQ_TESTMIDI, READ, sizeof(int));
_(SNDCTL_SEQ_THRESHOLD, READ, sizeof(int));
_(SNDCTL_SYNTH_INFO, WRITE, struct_synth_info_sz);
_(SNDCTL_SYNTH_MEMAVL, WRITE, sizeof(int));
_(SNDCTL_TMR_METRONOME, READ, sizeof(int));
_(SNDCTL_TMR_SELECT, WRITE, sizeof(int));
_(SNDCTL_TMR_SOURCE, WRITE, sizeof(int));
_(SNDCTL_TMR_TEMPO, WRITE, sizeof(int));
_(SNDCTL_TMR_TIMEBASE, WRITE, sizeof(int));
_(SOUND_MIXER_READ_ALTPCM, WRITE, sizeof(int));
_(SOUND_MIXER_READ_BASS, WRITE, sizeof(int));
_(SOUND_MIXER_READ_CAPS, WRITE, sizeof(int));
_(SOUND_MIXER_READ_CD, WRITE, sizeof(int));
_(SOUND_MIXER_READ_DEVMASK, WRITE, sizeof(int));
_(SOUND_MIXER_READ_ENHANCE, WRITE, sizeof(int));
_(SOUND_MIXER_READ_IGAIN, WRITE, sizeof(int));
_(SOUND_MIXER_READ_IMIX, WRITE, sizeof(int));
_(SOUND_MIXER_READ_LINE, WRITE, sizeof(int));
_(SOUND_MIXER_READ_LINE1, WRITE, sizeof(int));
_(SOUND_MIXER_READ_LINE2, WRITE, sizeof(int));
_(SOUND_MIXER_READ_LINE3, WRITE, sizeof(int));
_(SOUND_MIXER_READ_MIC, WRITE, sizeof(int));
_(SOUND_MIXER_READ_OGAIN, WRITE, sizeof(int));
_(SOUND_MIXER_READ_PCM, WRITE, sizeof(int));
_(SOUND_MIXER_READ_RECLEV, WRITE, sizeof(int));
_(SOUND_MIXER_READ_RECMASK, WRITE, sizeof(int));
_(SOUND_MIXER_READ_RECSRC, WRITE, sizeof(int));
_(SOUND_MIXER_READ_SPEAKER, WRITE, sizeof(int));
_(SOUND_MIXER_READ_STEREODEVS, WRITE, sizeof(int));
_(SOUND_MIXER_READ_SYNTH, WRITE, sizeof(int));
_(SOUND_MIXER_READ_TREBLE, WRITE, sizeof(int));
_(SOUND_MIXER_READ_VOLUME, WRITE, sizeof(int));
_(SOUND_MIXER_WRITE_ALTPCM, WRITE, sizeof(int));
_(SOUND_MIXER_WRITE_BASS, WRITE, sizeof(int));
_(SOUND_MIXER_WRITE_CD, WRITE, sizeof(int));
_(SOUND_MIXER_WRITE_ENHANCE, WRITE, sizeof(int));
_(SOUND_MIXER_WRITE_IGAIN, WRITE, sizeof(int));
_(SOUND_MIXER_WRITE_IMIX, WRITE, sizeof(int));
_(SOUND_MIXER_WRITE_LINE, WRITE, sizeof(int));
_(SOUND_MIXER_WRITE_LINE1, WRITE, sizeof(int));
_(SOUND_MIXER_WRITE_LINE2, WRITE, sizeof(int));
_(SOUND_MIXER_WRITE_LINE3, WRITE, sizeof(int));
_(SOUND_MIXER_WRITE_MIC, WRITE, sizeof(int));
_(SOUND_MIXER_WRITE_OGAIN, WRITE, sizeof(int));
_(SOUND_MIXER_WRITE_PCM, WRITE, sizeof(int));
_(SOUND_MIXER_WRITE_RECLEV, WRITE, sizeof(int));
_(SOUND_MIXER_WRITE_RECSRC, WRITE, sizeof(int));
_(SOUND_MIXER_WRITE_SPEAKER, WRITE, sizeof(int));
_(SOUND_MIXER_WRITE_SYNTH, WRITE, sizeof(int));
_(SOUND_MIXER_WRITE_TREBLE, WRITE, sizeof(int));
_(SOUND_MIXER_WRITE_VOLUME, WRITE, sizeof(int));
_(SOUND_PCM_READ_BITS, WRITE, sizeof(int));
_(SOUND_PCM_READ_CHANNELS, WRITE, sizeof(int));
_(SOUND_PCM_READ_FILTER, WRITE, sizeof(int));
_(SOUND_PCM_READ_RATE, WRITE, sizeof(int));
_(SOUND_PCM_WRITE_CHANNELS, WRITE, sizeof(int));
_(SOUND_PCM_WRITE_FILTER, WRITE, sizeof(int));
_(TCFLSH, NONE, 0);
#if SANITIZER_GLIBC
_(TCGETA, WRITE, struct_termio_sz);
#endif
_(TCGETS, WRITE, struct_termios_sz);
_(TCSBRK, NONE, 0);
_(TCSBRKP, NONE, 0);
#if SANITIZER_GLIBC
_(TCSETA, READ, struct_termio_sz);
_(TCSETAF, READ, struct_termio_sz);
_(TCSETAW, READ, struct_termio_sz);
#endif
_(TCSETS, READ, struct_termios_sz);
_(TCSETSF, READ, struct_termios_sz);
_(TCSETSW, READ, struct_termios_sz);
_(TCXONC, NONE, 0);
_(TIOCGLCKTRMIOS, WRITE, struct_termios_sz);
_(TIOCGSOFTCAR, WRITE, sizeof(int));
_(TIOCINQ, WRITE, sizeof(int));
_(TIOCLINUX, READ, sizeof(char));
_(TIOCSERCONFIG, NONE, 0);
_(TIOCSERGETLSR, WRITE, sizeof(int));
_(TIOCSERGWILD, WRITE, sizeof(int));
_(TIOCSERSWILD, READ, sizeof(int));
_(TIOCSLCKTRMIOS, READ, struct_termios_sz);
_(TIOCSSOFTCAR, READ, sizeof(int));
_(VT_ACTIVATE, NONE, 0);
_(VT_DISALLOCATE, NONE, 0);
_(VT_GETMODE, WRITE, struct_vt_mode_sz);
_(VT_GETSTATE, WRITE, struct_vt_stat_sz);
_(VT_OPENQRY, WRITE, sizeof(int));
_(VT_RELDISP, NONE, 0);
_(VT_RESIZE, READ, struct_vt_sizes_sz);
_(VT_RESIZEX, READ, struct_vt_consize_sz);
_(VT_SENDSIG, NONE, 0);
_(VT_SETMODE, READ, struct_vt_mode_sz);
_(VT_WAITACTIVE, NONE, 0);
#endif
#if SANITIZER_GLIBC
// _(SIOCDEVPLIP, WRITE, struct_ifreq_sz); // the same as EQL_ENSLAVE
_(EQL_EMANCIPATE, WRITE, struct_ifreq_sz);
_(EQL_ENSLAVE, WRITE, struct_ifreq_sz);
_(EQL_GETMASTRCFG, WRITE, struct_ifreq_sz);
_(EQL_GETSLAVECFG, WRITE, struct_ifreq_sz);
_(EQL_SETMASTRCFG, WRITE, struct_ifreq_sz);
_(EQL_SETSLAVECFG, WRITE, struct_ifreq_sz);
_(EVIOCGKEYCODE_V2, WRITE, struct_input_keymap_entry_sz);
_(EVIOCGPROP, WRITE, 0);
_(EVIOCSKEYCODE_V2, READ, struct_input_keymap_entry_sz);
_(FS_IOC_GETFLAGS, WRITE, sizeof(int));
_(FS_IOC_GETVERSION, WRITE, sizeof(int));
_(FS_IOC_SETFLAGS, READ, sizeof(int));
_(FS_IOC_SETVERSION, READ, sizeof(int));
_(GIO_CMAP, WRITE, 48);
_(GIO_FONT, WRITE, 8192);
_(GIO_SCRNMAP, WRITE, e_tabsz);
_(GIO_UNIMAP, WRITE, struct_unimapdesc_sz);
_(GIO_UNISCRNMAP, WRITE, sizeof(short) * e_tabsz);
_(KDADDIO, NONE, 0);
_(KDDELIO, NONE, 0);
_(KDDISABIO, NONE, 0);
_(KDENABIO, NONE, 0);
_(KDGETKEYCODE, WRITE, struct_kbkeycode_sz);
_(KDGETLED, WRITE, 1);
_(KDGETMODE, WRITE, sizeof(int));
_(KDGKBDIACR, WRITE, struct_kbdiacrs_sz);
_(KDGKBENT, WRITE, struct_kbentry_sz);
_(KDGKBLED, WRITE, sizeof(int));
_(KDGKBMETA, WRITE, sizeof(int));
_(KDGKBMODE, WRITE, sizeof(int));
_(KDGKBSENT, WRITE, struct_kbsentry_sz);
_(KDGKBTYPE, WRITE, 1);
_(KDMAPDISP, NONE, 0);
_(KDMKTONE, NONE, 0);
_(KDSETKEYCODE, READ, struct_kbkeycode_sz);
_(KDSETLED, NONE, 0);
_(KDSETMODE, NONE, 0);
_(KDSIGACCEPT, NONE, 0);
_(KDSKBDIACR, READ, struct_kbdiacrs_sz);
_(KDSKBENT, READ, struct_kbentry_sz);
_(KDSKBLED, NONE, 0);
_(KDSKBMETA, NONE, 0);
_(KDSKBMODE, NONE, 0);
_(KDSKBSENT, READ, struct_kbsentry_sz);
_(KDUNMAPDISP, NONE, 0);
_(KIOCSOUND, NONE, 0);
_(LPABORT, NONE, 0);
_(LPABORTOPEN, NONE, 0);
_(LPCAREFUL, NONE, 0);
_(LPCHAR, NONE, 0);
_(LPGETIRQ, WRITE, sizeof(int));
_(LPGETSTATUS, WRITE, sizeof(int));
_(LPRESET, NONE, 0);
_(LPSETIRQ, NONE, 0);
_(LPTIME, NONE, 0);
_(LPWAIT, NONE, 0);
_(MTIOCGETCONFIG, WRITE, struct_mtconfiginfo_sz);
_(MTIOCSETCONFIG, READ, struct_mtconfiginfo_sz);
_(PIO_CMAP, NONE, 0);
_(PIO_FONT, READ, 8192);
_(PIO_SCRNMAP, READ, e_tabsz);
_(PIO_UNIMAP, READ, struct_unimapdesc_sz);
_(PIO_UNIMAPCLR, READ, struct_unimapinit_sz);
_(PIO_UNISCRNMAP, READ, sizeof(short) * e_tabsz);
_(SCSI_IOCTL_PROBE_HOST, READ, sizeof(int));
_(SCSI_IOCTL_TAGGED_DISABLE, NONE, 0);
_(SCSI_IOCTL_TAGGED_ENABLE, NONE, 0);
_(SNDCTL_DSP_GETISPACE, WRITE, struct_audio_buf_info_sz);
_(SNDCTL_DSP_GETOSPACE, WRITE, struct_audio_buf_info_sz);
_(TIOCGSERIAL, WRITE, struct_serial_struct_sz);
_(TIOCSERGETMULTI, WRITE, struct_serial_multiport_struct_sz);
_(TIOCSERSETMULTI, READ, struct_serial_multiport_struct_sz);
_(TIOCSSERIAL, READ, struct_serial_struct_sz);
// The following ioctl requests are shared between AX25, IPX, netrom and
// mrouted.
// _(SIOCAIPXITFCRT, READ, sizeof(char));
// _(SIOCAX25GETUID, READ, struct_sockaddr_ax25_sz);
// _(SIOCNRGETPARMS, WRITE, struct_nr_parms_struct_sz);
// _(SIOCAIPXPRISLT, READ, sizeof(char));
// _(SIOCNRSETPARMS, READ, struct_nr_parms_struct_sz);
// _(SIOCAX25ADDUID, READ, struct_sockaddr_ax25_sz);
// _(SIOCNRDECOBS, NONE, 0);
// _(SIOCAX25DELUID, READ, struct_sockaddr_ax25_sz);
// _(SIOCIPXCFGDATA, WRITE, struct_ipx_config_data_sz);
// _(SIOCAX25NOUID, READ, sizeof(int));
// _(SIOCNRRTCTL, READ, sizeof(int));
// _(SIOCAX25DIGCTL, READ, sizeof(int));
// _(SIOCAX25GETPARMS, WRITE, struct_ax25_parms_struct_sz);
// _(SIOCAX25SETPARMS, READ, struct_ax25_parms_struct_sz);
#endif
#undef _
}
static bool ioctl_initialized = false;
struct ioctl_desc_compare {
bool operator()(const ioctl_desc& left, const ioctl_desc& right) const {
return left.req < right.req;
}
};
static void ioctl_init() {
ioctl_table_fill();
Sort(ioctl_table, ioctl_table_size, ioctl_desc_compare());
bool bad = false;
for (unsigned i = 0; i < ioctl_table_size - 1; ++i) {
if (ioctl_table[i].req >= ioctl_table[i + 1].req) {
Printf("Duplicate or unsorted ioctl request id %x >= %x (%s vs %s)\n",
ioctl_table[i].req, ioctl_table[i + 1].req, ioctl_table[i].name,
ioctl_table[i + 1].name);
bad = true;
}
}
if (bad) Die();
ioctl_initialized = true;
}
// Handle the most evil ioctls that encode argument value as part of request id.
static unsigned ioctl_request_fixup(unsigned req) {
#if SANITIZER_LINUX
// Strip size and event number.
const unsigned kEviocgbitMask =
(IOC_SIZEMASK << IOC_SIZESHIFT) | EVIOC_EV_MAX;
if ((req & ~kEviocgbitMask) == IOCTL_EVIOCGBIT)
return IOCTL_EVIOCGBIT;
// Strip absolute axis number.
if ((req & ~EVIOC_ABS_MAX) == IOCTL_EVIOCGABS)
return IOCTL_EVIOCGABS;
if ((req & ~EVIOC_ABS_MAX) == IOCTL_EVIOCSABS)
return IOCTL_EVIOCSABS;
#endif
return req;
}
static const ioctl_desc *ioctl_table_lookup(unsigned req) {
int left = 0;
int right = ioctl_table_size;
while (left < right) {
int mid = (left + right) / 2;
if (ioctl_table[mid].req < req)
left = mid + 1;
else
right = mid;
}
if (left == right && ioctl_table[left].req == req)
return ioctl_table + left;
else
return nullptr;
}
static bool ioctl_decode(unsigned req, ioctl_desc *desc) {
CHECK(desc);
desc->req = req;
desc->name = "<DECODED_IOCTL>";
desc->size = IOC_SIZE(req);
// Sanity check.
if (desc->size > 0xFFFF) return false;
unsigned dir = IOC_DIR(req);
switch (dir) {
case IOC_NONE:
desc->type = ioctl_desc::NONE;
break;
case IOC_READ | IOC_WRITE:
desc->type = ioctl_desc::READWRITE;
break;
case IOC_READ:
desc->type = ioctl_desc::WRITE;
break;
case IOC_WRITE:
desc->type = ioctl_desc::READ;
break;
default:
return false;
}
// Size can be 0 iff type is NONE.
if ((desc->type == IOC_NONE) != (desc->size == 0)) return false;
// Sanity check.
if (IOC_TYPE(req) == 0) return false;
return true;
}
static const ioctl_desc *ioctl_lookup(unsigned req) {
req = ioctl_request_fixup(req);
const ioctl_desc *desc = ioctl_table_lookup(req);
if (desc) return desc;
// Try stripping access size from the request id.
desc = ioctl_table_lookup(req & ~(IOC_SIZEMASK << IOC_SIZESHIFT));
// Sanity check: requests that encode access size are either read or write and
// have size of 0 in the table.
if (desc && desc->size == 0 &&
(desc->type == ioctl_desc::READWRITE || desc->type == ioctl_desc::WRITE ||
desc->type == ioctl_desc::READ))
return desc;
return nullptr;
}
static void ioctl_common_pre(void *ctx, const ioctl_desc *desc, int d,
unsigned request, void *arg) {
if (desc->type == ioctl_desc::READ || desc->type == ioctl_desc::READWRITE) {
unsigned size = desc->size ? desc->size : IOC_SIZE(request);
COMMON_INTERCEPTOR_READ_RANGE(ctx, arg, size);
}
if (desc->type != ioctl_desc::CUSTOM)
return;
if (request == IOCTL_SIOCGIFCONF) {
struct __sanitizer_ifconf *ifc = (__sanitizer_ifconf *)arg;
COMMON_INTERCEPTOR_READ_RANGE(ctx, (char*)&ifc->ifc_len,
sizeof(ifc->ifc_len));
}
}
static void ioctl_common_post(void *ctx, const ioctl_desc *desc, int res, int d,
unsigned request, void *arg) {
if (desc->type == ioctl_desc::WRITE || desc->type == ioctl_desc::READWRITE) {
// FIXME: add verbose output
unsigned size = desc->size ? desc->size : IOC_SIZE(request);
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, arg, size);
}
if (desc->type != ioctl_desc::CUSTOM)
return;
if (request == IOCTL_SIOCGIFCONF) {
struct __sanitizer_ifconf *ifc = (__sanitizer_ifconf *)arg;
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ifc->ifc_ifcu.ifcu_req, ifc->ifc_len);
}
}
#endif
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