IOCTL_LIST(2)

NAME
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/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 *
0x80086601 | FS_IOC_GETFLAGS | int *
0x40086602 | FS_IOC_SETFLAGS | int *
0x80087601 | FS_IOC_GETVERSION | int *
0x40087602 | FS_IOC_SETVERSION | int *
0xC020660B | FS_IOC_FIEMAP | struct fiemap *
0x40086602 | FS_IOC32_SETFLAGS | int *
0x40086602 | FS_IOC32_SETFLAGS | int *
0x80047601 | FS_IOC32_GETVERSION | int *
0x40047602 | FS_IOC32_SETVERSION | 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> see ioctl_fat(2)
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 *
0x80047213 | FAT_IOCTL_GET_VOLUME_ID | __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/timerfd.h> see timerfd_create(2)
0x40085400 | TFD_IOC_SET_TICKS | uint64_t *
// <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 *
    INET6               const struct in6_rtmsg *
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

SEE ALSO
ioctl(2), ioctl_fat(2)

COLOPHON
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