ioctl_list (2)

List of ioctl calls in linux/i386 kernel

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  4. ioctl_list: List of ioctl calls in linux/i386 kernel
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  4. ioctl_list: List of ioctl calls in linux/i386 kernel

DESCRIPTION

This is Ioctl List 1.3.27, a list of ioctl calls in Linux/i386 kernel 1.3.27. It contains 421 ioctls from </usr/include/{asm,linux}/*.h>. For each ioctl, its numerical value, its name, and its argument type are given.

An argument type of const struct foo * means the argument is input to the kernel. struct foo * means the kernel outputs the argument. If the kernel uses the argument for both input and output, this is marked with // I-O.

Some ioctls take more arguments or return more values than a single structure. These are marked // MORE and documented further in a separate section.

This list is very incomplete.

ioctl structure

Ioctl command values are 32-bit constants. In principle these constants are completely arbitrary, but people have tried to build some structure into them.

The old Linux situation was that of mostly 16-bit constants, where the last byte is a serial number, and the preceding byte(s) give a type indicating the driver. Sometimes the major number was used: 0x03 for the HDIO_* ioctls, 0x06 for the LP* ioctls. And sometimes one or more ASCII letters were used. For example, TCGETS has value 0x00005401, with 0x54 = 'T' indicating the terminal driver, and CYGETTIMEOUT has value 0x00435906, with 0x43 0x59 = 'C' 'Y' indicating the cyclades driver.

Later (0.98p5) some more information was built into the number. One has 2 direction bits (00: none, 01: write, 10: read, 11: read/write) followed by 14 size bits (giving the size of the argument), followed by an 8-bit type (collecting the ioctls in groups for a common purpose or a common driver), and an 8-bit serial number.

The macros describing this structure live in <asm/ioctl.h> and are _IO(type,nr) and {_IOR,_IOW,_IOWR}(type,nr,size). They use sizeof(size) so that size is a misnomer here: this third argument is a data type.

Note that the size bits are very unreliable: in lots of cases they are wrong, either because of buggy macros using sizeof(sizeof(struct)), or because of legacy values.

Thus, it seems that the new structure only gave disadvantages: it does not help in checking, but it causes varying values for the various architectures.

RETURN VALUE

Decent ioctls return 0 on success and -1 on error, while any output value is stored via the argument. However, quite a few ioctls in fact return an output value. This is not yet indicated below.

// Main table.

// <include/asm-i386/socket.h>

0x00008901 FIOSETOWN const int *
0x00008902 SIOCSPGRP const int *
0x00008903 FIOGETOWN int *
0x00008904 SIOCGPGRP int *
0x00008905 SIOCATMAR int *
0x00008906 SIOCGSTAMP timeval *

// <include/asm-i386/termios.h>

0x00005401 TCGETS struct termios *
0x00005402 TCSETS const struct termios *
0x00005403 TCSETSW const struct termios *
0x00005404 TCSETSF const struct termios *
0x00005405 TCGETA struct termio *
0x00005406 TCSETA const struct termio *
0x00005407 TCSETAW const struct termio *
0x00005408 TCSETAF const struct termio *
0x00005409 TCSBRK int
0x0000540A TCXONC int
0x0000540B TCFLSH int
0x0000540C TIOCEXCL void
0x0000540D TIOCNXCL void
0x0000540E TIOCSCTTY int
0x0000540F TIOCGPGRP pid_t *
0x00005410 TIOCSPGRP const pid_t *
0x00005411 TIOCOUTQ int *
0x00005412 TIOCSTI const char *
0x00005413 TIOCGWINSZ struct winsize *
0x00005414 TIOCSWINSZ const struct winsize *
0x00005415 TIOCMGET int *
0x00005416 TIOCMBIS const int *
0x00005417 TIOCMBIC const int *
0x00005418 TIOCMSET const int *
0x00005419 TIOCGSOFTCAR int *
0x0000541A TIOCSSOFTCAR const int *
0x0000541B FIONREAD int *
0x0000541B TIOCINQ int *
0x0000541C TIOCLINUX const char * // MORE
0x0000541D TIOCCONS void
0x0000541E TIOCGSERIAL struct serial_struct *
0x0000541F TIOCSSERIAL const struct serial_struct *
0x00005420 TIOCPKT const int *
0x00005421 FIONBIO const int *
0x00005422 TIOCNOTTY void
0x00005423 TIOCSETD const int *
0x00005424 TIOCGETD int *
0x00005425 TCSBRKP int
0x00005426 TIOCTTYGSTRUCT struct tty_struct *
0x00005450 FIONCLEX void
0x00005451 FIOCLEX void
0x00005452 FIOASYNC const int *
0x00005453 TIOCSERCONFIG void
0x00005454 TIOCSERGWILD int *
0x00005455 TIOCSERSWILD const int *
0x00005456 TIOCGLCKTRMIOS struct termios *
0x00005457 TIOCSLCKTRMIOS const struct termios *
0x00005458 TIOCSERGSTRUCT struct async_struct *
0x00005459 TIOCSERGETLSR int *
0x0000545A TIOCSERGETMULTI struct serial_multiport_struct *
0x0000545B TIOCSERSETMULTI const struct serial_multiport_struct *

// <include/linux/ax25.h>

0x000089E0 SIOCAX25GETUID const struct sockaddr_ax25 *
0x000089E1 SIOCAX25ADDUID const struct sockaddr_ax25 *
0x000089E2 SIOCAX25DELUID const struct sockaddr_ax25 *
0x000089E3 SIOCAX25NOUID const int *
0x000089E4 SIOCAX25DIGCTL const int *
0x000089E5 SIOCAX25GETPARMS struct ax25_parms_struct * // I-O
0x000089E6 SIOCAX25SETPARMS const struct ax25_parms_struct *

// <include/linux/cdk.h>

0x00007314 STL_BINTR void
0x00007315 STL_BSTART void
0x00007316 STL_BSTOP void
0x00007317 STL_BRESET void

// <include/linux/cdrom.h>

0x00005301 CDROMPAUSE void
0x00005302 CDROMRESUME void
0x00005303 CDROMPLAYMSF const struct cdrom_msf *
0x00005304 CDROMPLAYTRKIND const struct cdrom_ti *
0x00005305 CDROMREADTOCHDR struct cdrom_tochdr *
0x00005306 CDROMREADTOCENTRY struct cdrom_tocentry * // I-O
0x00005307 CDROMSTOP void
0x00005308 CDROMSTART void
0x00005309 CDROMEJECT void
0x0000530A CDROMVOLCTRL const struct cdrom_volctrl *
0x0000530B CDROMSUBCHNL struct cdrom_subchnl * // I-O
0x0000530C CDROMREADMODE2 const struct cdrom_msf * // MORE
0x0000530D CDROMREADMODE1 const struct cdrom_msf * // MORE
0x0000530E CDROMREADAUDIO const struct cdrom_read_audio * // MORE
0x0000530F CDROMEJECT_SW int
0x00005310 CDROMMULTISESSION struct cdrom_multisession * // I-O
0x00005311 CDROM_GET_UPC struct { char [8]; } *
0x00005312 CDROMRESET void
0x00005313 CDROMVOLREAD struct cdrom_volctrl *
0x00005314 CDROMREADRAW const struct cdrom_msf * // MORE
0x00005315 CDROMREADCOOKED const struct cdrom_msf * // MORE
0x00005316 CDROMSEEK const struct cdrom_msf *

// <include/linux/cm206.h>

0x00002000 CM206CTL_GET_STAT int
0x00002001 CM206CTL_GET_LAST_STAT int

// <include/linux/cyclades.h>

0x00435901 CYGETMON struct cyclades_monitor *
0x00435902 CYGETTHRESH int *
0x00435903 CYSETTHRESH int
0x00435904 CYGETDEFTHRESH int *
0x00435905 CYSETDEFTHRESH int
0x00435906 CYGETTIMEOUT int *
0x00435907 CYSETTIMEOUT int
0x00435908 CYGETDEFTIMEOUT int *
0x00435909 CYSETDEFTIMEOUT int

// <include/linux/ext2_fs.h>

0x80046601 EXT2_IOC_GETFLAGS int *
0x40046602 EXT2_IOC_SETFLAGS const int *
0x80047601 EXT2_IOC_GETVERSION int *
0x40047602 EXT2_IOC_SETVERSION const int *

// <include/linux/fd.h>

0x00000000 FDCLRPRM void
0x00000001 FDSETPRM const struct floppy_struct *
0x00000002 FDDEFPRM const struct floppy_struct *
0x00000003 FDGETPRM struct floppy_struct *
0x00000004 FDMSGON void
0x00000005 FDMSGOFF void
0x00000006 FDFMTBEG void
0x00000007 FDFMTTRK const struct format_descr *
0x00000008 FDFMTEND void
0x0000000A FDSETEMSGTRESH int
0x0000000B FDFLUSH void
0x0000000C FDSETMAXERRS const struct floppy_max_errors *
0x0000000E FDGETMAXERRS struct floppy_max_errors *
0x00000010 FDGETDRVTYP struct { char [16]; } *
0x00000014 FDSETDRVPRM const struct floppy_drive_params *
0x00000015 FDGETDRVPRM struct floppy_drive_params *
0x00000016 FDGETDRVSTAT struct floppy_drive_struct *
0x00000017 FDPOLLDRVSTAT struct floppy_drive_struct *
0x00000018 FDRESET int
0x00000019 FDGETFDCSTAT struct floppy_fdc_state *
0x0000001B FDWERRORCLR void
0x0000001C FDWERRORGET struct floppy_write_errors *
0x0000001E FDRAWCMD struct floppy_raw_cmd * // MORE // I-O
0x00000028 FDTWADDLE void

// <include/linux/fs.h>

0x0000125D BLKROSET const int *
0x0000125E BLKROGET int *
0x0000125F BLKRRPART void
0x00001260 BLKGETSIZE unsigned long *
0x00001261 BLKFLSBUF void
0x00001262 BLKRASET int
0x00001263 BLKRAGET int *
0x00000001 FIBMAP int * // I-O
0x00000002 FIGETBSZ int *

// <include/linux/hdreg.h>

0x00000301 HDIO_GETGEO struct hd_geometry *
0x00000302 HDIO_GET_UNMASKINTR int *
0x00000304 HDIO_GET_MULTCOUNT int *
0x00000307 HDIO_GET_IDENTITY struct hd_driveid *
0x00000308 HDIO_GET_KEEPSETTINGS int *
0x00000309 HDIO_GET_CHIPSET int *
0x0000030A HDIO_GET_NOWERR int *
0x0000030B HDIO_GET_DMA int *
0x0000031F HDIO_DRIVE_CMD int * // I-O
0x00000321 HDIO_SET_MULTCOUNT int
0x00000322 HDIO_SET_UNMASKINTR int
0x00000323 HDIO_SET_KEEPSETTINGS int
0x00000324 HDIO_SET_CHIPSET int
0x00000325 HDIO_SET_NOWERR int
0x00000326 HDIO_SET_DMA int

// <include/linux/if_eql.h>

0x000089F0 EQL_ENSLAVE struct ifreq * // MORE // I-O
0x000089F1 EQL_EMANCIPATE struct ifreq * // MORE // I-O
0x000089F2 EQL_GETSLAVECFG struct ifreq * // MORE // I-O
0x000089F3 EQL_SETSLAVECFG struct ifreq * // MORE // I-O
0x000089F4 EQL_GETMASTRCFG struct ifreq * // MORE // I-O
0x000089F5 EQL_SETMASTRCFG struct ifreq * // MORE // I-O

// <include/linux/if_plip.h>

0x000089F0 SIOCDEVPLIP struct ifreq * // I-O

// <include/linux/if_ppp.h>

0x00005490 PPPIOCGFLAGS int *
0x00005491 PPPIOCSFLAGS const int *
0x00005492 PPPIOCGASYNCMAP int *
0x00005493 PPPIOCSASYNCMAP const int *
0x00005494 PPPIOCGUNIT int *
0x00005495 PPPIOCSINPSIG const int *
0x00005497 PPPIOCSDEBUG const int *
0x00005498 PPPIOCGDEBUG int *
0x00005499 PPPIOCGSTAT struct ppp_stats *
0x0000549A PPPIOCGTIME struct ppp_ddinfo *
0x0000549B PPPIOCGXASYNCMAP struct { int [8]; } *
0x0000549C PPPIOCSXASYNCMAP const struct { int [8]; } *
0x0000549D PPPIOCSMRU const int *
0x0000549E PPPIOCRASYNCMAP const int *
0x0000549F PPPIOCSMAXCID const int *

// <include/linux/ipx.h>

0x000089E0 SIOCAIPXITFCRT const char *
0x000089E1 SIOCAIPXPRISLT const char *
0x000089E2 SIOCIPXCFGDATA struct ipx_config_data *

// <include/linux/kd.h>

0x00004B60 GIO_FONT struct { char [8192]; } *
0x00004B61 PIO_FONT const struct { char [8192]; } *
0x00004B6B GIO_FONTX struct console_font_desc * // MORE // I-O
0x00004B6C PIO_FONTX const struct console_font_desc * //MORE
0x00004B70 GIO_CMAP struct { char [48]; } *
0x00004B71 PIO_CMAP const struct { char [48]; }
0x00004B2F KIOCSOUND int
0x00004B30 KDMKTONE int
0x00004B31 KDGETLED char *
0x00004B32 KDSETLED int
0x00004B33 KDGKBTYPE char *
0x00004B34 KDADDIO int // MORE
0x00004B35 KDDELIO int // MORE
0x00004B36 KDENABIO void // MORE
0x00004B37 KDDISABIO void // MORE
0x00004B3A KDSETMODE int
0x00004B3B KDGETMODE int *
0x00004B3C KDMAPDISP void // MORE
0x00004B3D KDUNMAPDISP void // MORE
0x00004B40 GIO_SCRNMAP struct { char [E_TABSZ]; } *
0x00004B41 PIO_SCRNMAP const struct { char [E_TABSZ]; } *
0x00004B69 GIO_UNISCRNMAP struct { short [E_TABSZ]; } *
0x00004B6A PIO_UNISCRNMAP const struct { short [E_TABSZ]; } *
0x00004B66 GIO_UNIMAP struct unimapdesc * // MORE // I-O
0x00004B67 PIO_UNIMAP const struct unimapdesc * // MORE
0x00004B68 PIO_UNIMAPCLR const struct unimapinit *
0x00004B44 KDGKBMODE int *
0x00004B45 KDSKBMODE int
0x00004B62 KDGKBMETA int *
0x00004B63 KDSKBMETA int
0x00004B64 KDGKBLED int *
0x00004B65 KDSKBLED int
0x00004B46 KDGKBENT struct kbentry * // I-O
0x00004B47 KDSKBENT const struct kbentry *
0x00004B48 KDGKBSENT struct kbsentry * // I-O
0x00004B49 KDSKBSENT const struct kbsentry *
0x00004B4A KDGKBDIACR struct kbdiacrs *
0x00004B4B KDSKBDIACR const struct kbdiacrs *
0x00004B4C KDGETKEYCODE struct kbkeycode * // I-O
0x00004B4D KDSETKEYCODE const struct kbkeycode *
0x00004B4E KDSIGACCEPT int

// <include/linux/lp.h>

0x00000601 LPCHAR int
0x00000602 LPTIME int
0x00000604 LPABORT int
0x00000605 LPSETIRQ int
0x00000606 LPGETIRQ int *
0x00000608 LPWAIT int
0x00000609 LPCAREFUL int
0x0000060A LPABORTOPEN int
0x0000060B LPGETSTATUS int *
0x0000060C LPRESET void
0x0000060D LPGETSTATS struct lp_stats *

// <include/linux/mroute.h>

0x000089E0 SIOCGETVIFCNT struct sioc_vif_req * // I-O
0x000089E1 SIOCGETSGCNT struct sioc_sg_req * // I-O

// <include/linux/msdos_fs.h>

0x82307201 VFAT_IOCTL_READDIR_BOTH struct dirent [2]
0x82307202 VFAT_IOCTL_READDIR_SHORT struct dirent [2]
0x80047210 FAT_IOCTL_GET_ATTRIBUTES __u32 *
0x40047211 FAT_IOCTL_SET_ATTRIBUTES const __u32 *

// <include/linux/mtio.h>

0x40086D01 MTIOCTOP const struct mtop *
0x801C6D02 MTIOCGET struct mtget *
0x80046D03 MTIOCPOS struct mtpos *
0x80206D04 MTIOCGETCONFIG struct mtconfiginfo *
0x40206D05 MTIOCSETCONFIG const struct mtconfiginfo *

// <include/linux/netrom.h>

0x000089E0 SIOCNRGETPARMS struct nr_parms_struct * // I-O
0x000089E1 SIOCNRSETPARMS const struct nr_parms_struct *
0x000089E2 SIOCNRDECOBS void
0x000089E3 SIOCNRRTCTL const int *

// <include/linux/sbpcd.h>

0x00009000 DDIOCSDBG const int *
0x00005382 CDROMAUDIOBUFSIZ int

// <include/linux/scc.h>

0x00005470 TIOCSCCINI void
0x00005471 TIOCCHANINI const struct scc_modem *
0x00005472 TIOCGKISS struct ioctl_command * // I-O
0x00005473 TIOCSKISS const struct ioctl_command *
0x00005474 TIOCSCCSTAT struct scc_stat *

// <include/linux/scsi.h>

0x00005382 SCSI_IOCTL_GET_IDLUN struct { int [2]; } *
0x00005383 SCSI_IOCTL_TAGGED_ENABLE void
0x00005384 SCSI_IOCTL_TAGGED_DISABLE void
0x00005385 SCSI_IOCTL_PROBE_HOST const int * // MORE

// <include/linux/smb_fs.h>

0x80027501 SMB_IOC_GETMOUNTUID uid_t *

// <include/linux/sockios.h>

0x0000890B SIOCADDRT const struct rtentry * // MORE
0x0000890C SIOCDELRT const struct rtentry * // MORE
0x00008910 SIOCGIFNAME char []
0x00008911 SIOCSIFLINK void
0x00008912 SIOCGIFCONF struct ifconf * // MORE // I-O
0x00008913 SIOCGIFFLAGS struct ifreq * // I-O
0x00008914 SIOCSIFFLAGS const struct ifreq *
0x00008915 SIOCGIFADDR struct ifreq * // I-O
0x00008916 SIOCSIFADDR const struct ifreq *
0x00008917 SIOCGIFDSTADDR struct ifreq * // I-O
0x00008918 SIOCSIFDSTADDR const struct ifreq *
0x00008919 SIOCGIFBRDADDR struct ifreq * // I-O
0x0000891A SIOCSIFBRDADDR const struct ifreq *
0x0000891B SIOCGIFNETMASK struct ifreq * // I-O
0x0000891C SIOCSIFNETMASK const struct ifreq *
0x0000891D SIOCGIFMETRIC struct ifreq * // I-O
0x0000891E SIOCSIFMETRIC const struct ifreq *
0x0000891F SIOCGIFMEM struct ifreq * // I-O
0x00008920 SIOCSIFMEM const struct ifreq *
0x00008921 SIOCGIFMTU struct ifreq * // I-O
0x00008922 SIOCSIFMTU const struct ifreq *
0x00008923 OLD_SIOCGIFHWADDR struct ifreq * // I-O
0x00008924 SIOCSIFHWADDR const struct ifreq * // MORE
0x00008925 SIOCGIFENCAP int *
0x00008926 SIOCSIFENCAP const int *
0x00008927 SIOCGIFHWADDR struct ifreq * // I-O
0x00008929 SIOCGIFSLAVE void
0x00008930 SIOCSIFSLAVE void
0x00008931 SIOCADDMULTI const struct ifreq *
0x00008932 SIOCDELMULTI const struct ifreq *
0x00008940 SIOCADDRTOLD void
0x00008941 SIOCDELRTOLD void
0x00008950 SIOCDARP const struct arpreq *
0x00008951 SIOCGARP struct arpreq * // I-O
0x00008952 SIOCSARP const struct arpreq *
0x00008960 SIOCDRARP const struct arpreq *
0x00008961 SIOCGRARP struct arpreq * // I-O
0x00008962 SIOCSRARP const struct arpreq *
0x00008970 SIOCGIFMAP struct ifreq * // I-O
0x00008971 SIOCSIFMAP const struct ifreq *

// <include/linux/soundcard.h>

0x00005100 SNDCTL_SEQ_RESET void
0x00005101 SNDCTL_SEQ_SYNC void
0xC08C5102 SNDCTL_SYNTH_INFO struct synth_info * // I-O
0xC0045103 SNDCTL_SEQ_CTRLRATE int * // I-O
0x80045104 SNDCTL_SEQ_GETOUTCOUNT int *
0x80045105 SNDCTL_SEQ_GETINCOUNT int *
0x40045106 SNDCTL_SEQ_PERCMODE void
0x40285107 SNDCTL_FM_LOAD_INSTR const struct sbi_instrument *
0x40045108 SNDCTL_SEQ_TESTMIDI const int *
0x40045109 SNDCTL_SEQ_RESETSAMPLES const int *
0x8004510A SNDCTL_SEQ_NRSYNTHS int *
0x8004510B SNDCTL_SEQ_NRMIDIS int *
0xC074510C SNDCTL_MIDI_INFO struct midi_info * // I-O
0x4004510D SNDCTL_SEQ_THRESHOLD const int *
0xC004510E SNDCTL_SYNTH_MEMAVL int * // I-O
0x4004510F SNDCTL_FM_4OP_ENABLE const int *
0xCFB85110 SNDCTL_PMGR_ACCESS struct patmgr_info * // I-O
0x00005111 SNDCTL_SEQ_PANIC void
0x40085112 SNDCTL_SEQ_OUTOFBAND const struct seq_event_rec *
0xC0045401 SNDCTL_TMR_TIMEBASE int * // I-O
0x00005402 SNDCTL_TMR_START void
0x00005403 SNDCTL_TMR_STOP void
0x00005404 SNDCTL_TMR_CONTINUE void
0xC0045405 SNDCTL_TMR_TEMPO int * // I-O
0xC0045406 SNDCTL_TMR_SOURCE int * // I-O
0x40045407 SNDCTL_TMR_METRONOME const int *
0x40045408 SNDCTL_TMR_SELECT int * // I-O
0xCFB85001 SNDCTL_PMGR_IFACE struct patmgr_info * // I-O
0xC0046D00 SNDCTL_MIDI_PRETIME int * // I-O
0xC0046D01 SNDCTL_MIDI_MPUMODE const int *
0xC0216D02 SNDCTL_MIDI_MPUCMD struct mpu_command_rec * // I-O
0x00005000 SNDCTL_DSP_RESET void
0x00005001 SNDCTL_DSP_SYNC void
0xC0045002 SNDCTL_DSP_SPEED int * // I-O
0xC0045003 SNDCTL_DSP_STEREO int * // I-O
0xC0045004 SNDCTL_DSP_GETBLKSIZE int * // I-O
0xC0045006 SOUND_PCM_WRITE_CHANNELS int * // I-O
0xC0045007 SOUND_PCM_WRITE_FILTER int * // I-O
0x00005008 SNDCTL_DSP_POST void
0xC0045009 SNDCTL_DSP_SUBDIVIDE int * // I-O
0xC004500A SNDCTL_DSP_SETFRAGMENT int * // I-O
0x8004500B SNDCTL_DSP_GETFMTS int *
0xC0045005 SNDCTL_DSP_SETFMT int * // I-O
0x800C500C SNDCTL_DSP_GETOSPACE struct audio_buf_info *
0x800C500D SNDCTL_DSP_GETISPACE struct audio_buf_info *
0x0000500E SNDCTL_DSP_NONBLOCK void
0x80045002 SOUND_PCM_READ_RATE int *
0x80045006 SOUND_PCM_READ_CHANNELS int *
0x80045005 SOUND_PCM_READ_BITS int *
0x80045007 SOUND_PCM_READ_FILTER int *
0x00004300 SNDCTL_COPR_RESET void
0xCFB04301 SNDCTL_COPR_LOAD const struct copr_buffer *
0xC0144302 SNDCTL_COPR_RDATA struct copr_debug_buf * // I-O
0xC0144303 SNDCTL_COPR_RCODE struct copr_debug_buf * // I-O
0x40144304 SNDCTL_COPR_WDATA const struct copr_debug_buf *
0x40144305 SNDCTL_COPR_WCODE const struct copr_debug_buf *
0xC0144306 SNDCTL_COPR_RUN struct copr_debug_buf * // I-O
0xC0144307 SNDCTL_COPR_HALT struct copr_debug_buf * // I-O
0x4FA44308 SNDCTL_COPR_SENDMSG const struct copr_msg *
0x8FA44309 SNDCTL_COPR_RCVMSG struct copr_msg *
0x80044D00 SOUND_MIXER_READ_VOLUME int *
0x80044D01 SOUND_MIXER_READ_BASS int *
0x80044D02 SOUND_MIXER_READ_TREBLE int *
0x80044D03 SOUND_MIXER_READ_SYNTH int *
0x80044D04 SOUND_MIXER_READ_PCM int *
0x80044D05 SOUND_MIXER_READ_SPEAKER int *
0x80044D06 SOUND_MIXER_READ_LINE int *
0x80044D07 SOUND_MIXER_READ_MIC int *
0x80044D08 SOUND_MIXER_READ_CD int *
0x80044D09 SOUND_MIXER_READ_IMIX int *
0x80044D0A SOUND_MIXER_READ_ALTPCM int *
0x80044D0B SOUND_MIXER_READ_RECLEV int *
0x80044D0C SOUND_MIXER_READ_IGAIN int *
0x80044D0D SOUND_MIXER_READ_OGAIN int *
0x80044D0E SOUND_MIXER_READ_LINE1 int *
0x80044D0F SOUND_MIXER_READ_LINE2 int *
0x80044D10 SOUND_MIXER_READ_LINE3 int *
0x80044D1C SOUND_MIXER_READ_MUTE int *
0x80044D1D SOUND_MIXER_READ_ENHANCE int *
0x80044D1E SOUND_MIXER_READ_LOUD int *
0x80044DFF SOUND_MIXER_READ_RECSRC int *
0x80044DFE SOUND_MIXER_READ_DEVMASK int *
0x80044DFD SOUND_MIXER_READ_RECMASK int *
0x80044DFB SOUND_MIXER_READ_STEREODEVS int *
0x80044DFC SOUND_MIXER_READ_CAPS int *
0xC0044D00 SOUND_MIXER_WRITE_VOLUME int * // I-O
0xC0044D01 SOUND_MIXER_WRITE_BASS int * // I-O
0xC0044D02 SOUND_MIXER_WRITE_TREBLE int * // I-O
0xC0044D03 SOUND_MIXER_WRITE_SYNTH int * // I-O
0xC0044D04 SOUND_MIXER_WRITE_PCM int * // I-O
0xC0044D05 SOUND_MIXER_WRITE_SPEAKER int * // I-O
0xC0044D06 SOUND_MIXER_WRITE_LINE int * // I-O
0xC0044D07 SOUND_MIXER_WRITE_MIC int * // I-O
0xC0044D08 SOUND_MIXER_WRITE_CD int * // I-O
0xC0044D09 SOUND_MIXER_WRITE_IMIX int * // I-O
0xC0044D0A SOUND_MIXER_WRITE_ALTPCM int * // I-O
0xC0044D0B SOUND_MIXER_WRITE_RECLEV int * // I-O
0xC0044D0C SOUND_MIXER_WRITE_IGAIN int * // I-O
0xC0044D0D SOUND_MIXER_WRITE_OGAIN int * // I-O
0xC0044D0E SOUND_MIXER_WRITE_LINE1 int * // I-O
0xC0044D0F SOUND_MIXER_WRITE_LINE2 int * // I-O
0xC0044D10 SOUND_MIXER_WRITE_LINE3 int * // I-O
0xC0044D1C SOUND_MIXER_WRITE_MUTE int * // I-O
0xC0044D1D SOUND_MIXER_WRITE_ENHANCE int * // I-O
0xC0044D1E SOUND_MIXER_WRITE_LOUD int * // I-O
0xC0044DFF SOUND_MIXER_WRITE_RECSRC int * // I-O

// <include/linux/umsdos_fs.h>

0x000004D2 UMSDOS_READDIR_DOS struct umsdos_ioctl * // I-O
0x000004D3 UMSDOS_UNLINK_DOS const struct umsdos_ioctl *
0x000004D4 UMSDOS_RMDIR_DOS const struct umsdos_ioctl *
0x000004D5 UMSDOS_STAT_DOS struct umsdos_ioctl * // I-O
0x000004D6 UMSDOS_CREAT_EMD const struct umsdos_ioctl *
0x000004D7 UMSDOS_UNLINK_EMD const struct umsdos_ioctl *
0x000004D8 UMSDOS_READDIR_EMD struct umsdos_ioctl * // I-O
0x000004D9 UMSDOS_GETVERSION struct umsdos_ioctl *
0x000004DA UMSDOS_INIT_EMD void
0x000004DB UMSDOS_DOS_SETUP const struct umsdos_ioctl *
0x000004DC UMSDOS_RENAME_DOS const struct umsdos_ioctl *

// <include/linux/vt.h>

0x00005600 VT_OPENQRY int *
0x00005601 VT_GETMODE struct vt_mode *
0x00005602 VT_SETMODE const struct vt_mode *
0x00005603 VT_GETSTATE struct vt_stat *
0x00005604 VT_SENDSIG void
0x00005605 VT_RELDISP int
0x00005606 VT_ACTIVATE int
0x00005607 VT_WAITACTIVE int
0x00005608 VT_DISALLOCATE int
0x00005609 VT_RESIZE const struct vt_sizes *
0x0000560A VT_RESIZEX const struct vt_consize *

// More arguments. Some ioctl's take a pointer to a structure which contains additional pointers. These are documented here in alphabetical order.

CDROMREADAUDIO takes an input pointer const struct cdrom_read_audio *. The buf field points to an output buffer of length nframes * CD_FRAMESIZE_RAW.

CDROMREADCOOKED, CDROMREADMODE1, CDROMREADMODE2, and CDROMREADRAW take an input pointer const struct cdrom_msf *. They use the same pointer as an output pointer to char []. The length varies by request. For CDROMREADMODE1, most drivers use CD_FRAMESIZE, but the Optics Storage driver uses OPT_BLOCKSIZE instead (both have the numerical value 2048).

    CDROMREADCOOKED    char [CD_FRAMESIZE]
    CDROMREADMODE1     char [CD_FRAMESIZE or OPT_BLOCKSIZE]
    CDROMREADMODE2     char [CD_FRAMESIZE_RAW0]
    CDROMREADRAW       char [CD_FRAMESIZE_RAW]

EQL_ENSLAVE, EQL_EMANCIPATE, EQL_GETSLAVECFG, EQL_SETSLAVECFG, EQL_GETMASTERCFG, and EQL_SETMASTERCFG take a struct ifreq *. The ifr_data field is a pointer to another structure as follows:

    EQL_ENSLAVE         const struct slaving_request *
    EQL_EMANCIPATE      const struct slaving_request *
    EQL_GETSLAVECFG     struct slave_config *           // I-O
    EQL_SETSLAVECFG     const struct slave_config *
    EQL_GETMASTERCFG    struct master_config *
    EQL_SETMASTERCFG    const struct master_config *

FDRAWCMD takes a struct floppy raw_cmd *. If flags & FD_RAW_WRITE is nonzero, then data points to an input buffer of length length. If flags & FD_RAW_READ is nonzero, then data points to an output buffer of length length.

GIO_FONTX and PIO_FONTX take a struct console_font_desc * or a const struct console_font_desc *, respectively. chardata points to a buffer of char [charcount]. This is an output buffer for GIO_FONTX and an input buffer for PIO_FONTX.

GIO_UNIMAP and PIO_UNIMAP take a struct unimapdesc * or a const struct unimapdesc *, respectively. entries points to a buffer of struct unipair [entry_ct]. This is an output buffer for GIO_UNIMAP and an input buffer for PIO_UNIMAP.

KDADDIO, KDDELIO, KDDISABIO, and KDENABIO enable or disable access to I/O ports. They are essentially alternate interfaces to 'ioperm'.

KDMAPDISP and KDUNMAPDISP enable or disable memory mappings or I/O port access. They are not implemented in the kernel.

SCSI_IOCTL_PROBE_HOST takes an input pointer const int *, which is a length. It uses the same pointer as an output pointer to a char [] buffer of this length.

SIOCADDRT and SIOCDELRT take an input pointer whose type depends on the protocol:

    Most protocols      const struct rtentry *
    AX.25               const struct ax25_route *
    NET/ROM             const struct nr_route_struct *

SIOCGIFCONF takes a struct ifconf *. The ifc_buf field points to a buffer of length ifc_len bytes, into which the kernel writes a list of type struct ifreq [].

SIOCSIFHWADDR takes an input pointer whose type depends on the protocol:

    Most protocols      const struct ifreq *
    AX.25               const char [AX25_ADDR_LEN]

TIOCLINUX takes a const char *. It uses this to distinguish several independent subcases. In the table below, N + foo means foo after an N-byte pad. struct selection is implicitly defined in drivers/char/selection.c

    TIOCLINUX-2         1 + const struct selection *
    TIOCLINUX-3         void
    TIOCLINUX-4         void
    TIOCLINUX-5         4 + const struct { long [8]; } *
    TIOCLINUX-6         char *
    TIOCLINUX-7         char *
    TIOCLINUX-10        1 + const char *

// Duplicate ioctls

This list does not include ioctls in the range SIOCDEVPRIVATE and SIOCPROTOPRIVATE.

0x00000001 FDSETPRM FIBMAP
0x00000002 FDDEFPRM FIGETBSZ
0x00005382 CDROMAUDIOBUFSIZ SCSI_IOCTL_GET_IDLUN
0x00005402 SNDCTL_TMR_START TCSETS
0x00005403 SNDCTL_TMR_STOP TCSETSW
0x00005404 SNDCTL_TMR_CONTINUE TCSETSF

RELATED TO ioctl_list…

ioctl(2)

COLOPHON

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