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. In addition, information about some ioctls can be found in the pages listed under SEE ALSO in ioctl(2).

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 | unsigned long
0x00001263 | BLKRAGET | unsigned long *
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/uapi/linux/wireless.h>
// This API is deprecated.
// It is being replaced by nl80211 and cfg80211. See
// https://wireless.wiki.kernel.org/en/developers/documentation/nl80211
x00008b00 | SIOCSIWCOMMIT | struct iwreq *
x00008b01 | SIOCGIWNAME | struct iwreq *
x00008b02 | SIOCSIWNWID | struct iwreq *
x00008b03 | SIOCGIWNWID | struct iwreq *
x00008b04 | SIOCSIWFREQ | struct iwreq *
x00008b05 | SIOCGIWFREQ | struct iwreq *
x00008b06 | SIOCSIWMODE | struct iwreq *
x00008b07 | SIOCGIWMODE | struct iwreq *
x00008b08 | SIOCSIWSENS | struct iwreq *
x00008b09 | SIOCGIWSENS | struct iwreq *
x00008b0a | SIOCSIWRANGE | struct iwreq *
x00008b0b | SIOCGIWRANGE | struct iwreq *
x00008b0c | SIOCSIWPRIV | struct iwreq *
x00008b0d | SIOCGIWPRIV | struct iwreq *
x00008b0e | SIOCSIWSTATS | struct iwreq *
x00008b0f | SIOCGIWSTATS | struct iwreq *
x00008b10 | SIOCSIWSPY | struct iwreq *
x00008b11 | SIOCGIWSPY | struct iwreq *
x00008b12 | SIOCSIWTHRSPY | struct iwreq *
x00008b13 | SIOCGIWTHRSPY | struct iwreq *
x00008b14 | SIOCSIWAP | struct iwreq *
x00008b15 | SIOCGIWAP | struct iwreq *
x00008b17 | SIOCGIWAPLIST | struct iwreq *
x00008b18 | SIOCSIWSCAN | struct iwreq *
x00008b19 | SIOCGIWSCAN | struct iwreq *
x00008b1a | SIOCSIWESSID | struct iwreq *
x00008b1b | SIOCGIWESSID | struct iwreq *
x00008b1c | SIOCSIWNICKN | struct iwreq *
x00008b1d | SIOCGIWNICKN | struct iwreq *
x00008b20 | SIOCSIWRATE | struct iwreq *
x00008b21 | SIOCGIWRATE | struct iwreq *
x00008b22 | SIOCSIWRTS | struct iwreq *
x00008b23 | SIOCGIWRTS | struct iwreq *
x00008b24 | SIOCSIWFRAG | struct iwreq *
x00008b25 | SIOCGIWFRAG | struct iwreq *
x00008b26 | SIOCSIWTXPOW | struct iwreq *
x00008b27 | SIOCGIWTXPOW | struct iwreq *
x00008b28 | SIOCSIWRETRY | struct iwreq *
x00008b29 | SIOCGIWRETRY | struct iwreq *
x00008b2a | SIOCSIWENCODE | struct iwreq *
x00008b2b | SIOCGIWENCODE | struct iwreq *
x00008b2c | SIOCSIWPOWER | struct iwreq *
x00008b2d | SIOCGIWPOWER | struct iwreq *
x00008b30 | SIOCSIWGENIE | struct iwreq *
x00008b31 | SIOCGIWGENIE | struct iwreq *
x00008b16 | SIOCSIWMLME | struct iwreq *
x00008b32 | SIOCSIWAUTH | struct iwreq *
x00008b33 | SIOCGIWAUTH | struct iwreq *
x00008b34 | SIOCSIWENCODEEXT | struct iwreq *
x00008b35 | SIOCGIWENCODEEXT | struct iwreq *
x00008b36 | SIOCSIWPMKSA | struct iwreq *

// <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/uapi/linux/sockios.h> see netdevice(7)

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), netdevice(7)

COLOPHON
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