// Introduction

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, I list its numerical value, its name, and its argument

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 incomplete.  It does not include:

    -- Ioctls defined internal to the kernel ('scsi_ioctl.h').
    -- Ioctls defined in modules distributed separately from the kernel.

And, of course, I may have errors and omissions.

Please e-mail changes and comments to <mec@duracef.shout.net>.  I am
particularly interested in loadable modules which define their own
ioctls.  If you know of such a module, tell me where I can ftp it, and
I'll include its ioctls in my next release.

// Main table.

// <include/asm-i386/socket.h>
0x00008901  FIOSETOWN              const int *
0x00008902  SIOCSPGRP              const int *
0x00008903  FIOGETOWN              int *
0x00008904  SIOCGPGRP              int *
0x00008905  SIOCATMARK             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             const struct winsize *
0x00005414  TIOCSWINSZ             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 temios *
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             int *
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/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 *
0x80044D0E  SOUND_MIXER_READ_LINE1 int *
0x80044D0F  SOUND_MIXER_READ_LINE2 int *
0x80044D10  SOUND_MIXER_READ_LINE3 int *
0x80044D1C  SOUND_MIXER_READ_MUTE  int *
0x80044D1E  SOUND_MIXER_READ_LOUD  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

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

         CDROMREADMODE2       char [CD_FRAMESIZE_RAW0]
         CDROMREADRAW         char [CD_FRAMESIZE_RAW]

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 non-zero, then 'data' points to an input buffer of length 'length'.
If 'flags & FD_RAW_READ' is non-zero, then 'data' points to an output
buffer of length 'length'.

GIO_FONTX and PIO_FONTX take a 'struct console_font_desc *' or a
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
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 sub-cases.  In the table below, 'N + foo' means 'foo' after
an N-byte pad.  'struct selection' is implicitly defined in

         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

0x00000001  FDSETPRM               FIBMAP
0x00000002  FDDEFPRM               FIGETBSZ
0x00005402  SNDCTL_TMR_START       TCSETS
0x00005403  SNDCTL_TMR_STOP        TCSETSW