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gcc/libsanitizer/sanitizer_common/sanitizer_common_interceptors_ioctl.inc
Tamar Christina 745dae5923 libsanitizer: Remove cyclades from libsanitizer 
The Linux kernel has removed the interface to cyclades from
the latest kernel headers[1] due to them being orphaned for the
past 13 years.

libsanitizer uses this header when compiling against glibc, but
glibcs itself doesn't seem to have any references to cyclades.

Further more it seems that the driver is broken in the kernel and
the firmware doesn't seem to be available anymore.

As such since this is breaking the build of libsanitizer (and so the
GCC bootstrap[2]) I propose to remove this.

[1] https://lkml.org/lkml/2021/3/2/153
[2] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100379

(cherry picked from commit f7c5351552387bd43f6ca3631016d7f0dfe0f135)

libsanitizer/ChangeLog:

	PR sanitizer/100379
	* sanitizer_common/sanitizer_common_interceptors_ioctl.inc: Cherry-pick
	llvm-project revision f7c5351552387bd43f6ca3631016d7f0dfe0f135.
	* sanitizer_common/sanitizer_platform_limits_posix.cpp: Likewise.
	* sanitizer_common/sanitizer_platform_limits_posix.h: Likewise.
2021-05-21 10:30:59 +01:00

605 lines
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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(int));
_(BLKRASET, NONE, 0);
_(BLKROGET, WRITE, sizeof(int));
_(BLKROSET, READ, sizeof(int));
_(BLKRRPART, NONE, 0);
_(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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