IOCTL_LIST

Section: Linux Programmer's Manual (2)
Updated: 2019-11-19
Page Index

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

COLOPHON

This page is part of release 5.04 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.