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       ioctl_list - list of ioctl calls in Linux/i386 kernel


       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

       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


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

       // Main table.

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

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

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

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

       // <include/linux/ax25.h>

       0x000089E0   SIOCAX25GETUID     const struct sockaddr_ax25 *
       0x000089E1   SIOCAX25ADDUID     const struct sockaddr_ax25 *

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

       // <include/linux/cdk.h>

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

       // <include/linux/cdrom.h>

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

       // <include/linux/cm206.h>

       0x00002000   CM206CTL_GET_STAT        int
       0x00002001   CM206CTL_GET_LAST_STAT   int

       // <include/linux/cyclades.h>

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

       // <include/linux/ext2_fs.h>

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

       // <include/linux/fd.h>

       0x00000000   FDCLRPRM         void

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

       // <include/linux/fs.h>

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

       // <include/linux/hdreg.h>

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

       // <include/linux/if_eql.h>

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

       // <include/linux/if_plip.h>

       0x000089F0   SIOCDEVPLIP   struct ifreq *   // I-O

       // <include/linux/if_ppp.h>

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

       // <include/linux/ipx.h>

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

       // <include/linux/kd.h>

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

       0x00004B4B   KDSKBDIACR       const struct kbdiacrs *
       0x00004B4C   KDGETKEYCODE     struct kbkeycode *                    // I-O
       0x00004B4D   KDSETKEYCODE     const struct kbkeycode *
       0x00004B4E   KDSIGACCEPT      int

       // <include/linux/lp.h>

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

       // <include/linux/mroute.h>

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

       // <include/linux/mtio.h>

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

       // <include/linux/netrom.h>

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

       // <include/linux/sbpcd.h>

       0x00009000   DDIOCSDBG          const int *
       0x00005382   CDROMAUDIOBUFSIZ   int

       // <include/linux/scc.h>

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

       // <include/linux/scsi.h>

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

       // <include/linux/smb_fs.h>

       0x80027501   SMB_IOC_GETMOUNTUID   uid_t *

       // <include/linux/sockios.h>

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

       // <include/linux/soundcard.h>

       0x00005100   SNDCTL_SEQ_RESET              void
       0x00005101   SNDCTL_SEQ_SYNC               void
       0xC08C5102   SNDCTL_SYNTH_INFO             struct synth_info *             // I-O
       0xC0045103   SNDCTL_SEQ_CTRLRATE           int *                           // I-O
       0x80045104   SNDCTL_SEQ_GETOUTCOUNT        int *
       0x80045105   SNDCTL_SEQ_GETINCOUNT         int *
       0x40045106   SNDCTL_SEQ_PERCMODE           void
       0x40285107   SNDCTL_FM_LOAD_INSTR          const struct sbi_instrument *
       0x40045108   SNDCTL_SEQ_TESTMIDI           const int *
       0x40045109   SNDCTL_SEQ_RESETSAMPLES       const int *
       0x8004510A   SNDCTL_SEQ_NRSYNTHS           int *
       0x8004510B   SNDCTL_SEQ_NRMIDIS            int *
       0xC074510C   SNDCTL_MIDI_INFO              struct midi_info *              // I-O
       0x4004510D   SNDCTL_SEQ_THRESHOLD          const int *
       0xC004510E   SNDCTL_SYNTH_MEMAVL           int *                           // I-O
       0x4004510F   SNDCTL_FM_4OP_ENABLE          const int *
       0xCFB85110   SNDCTL_PMGR_ACCESS            struct patmgr_info *            // I-O
       0x00005111   SNDCTL_SEQ_PANIC              void
       0x40085112   SNDCTL_SEQ_OUTOFBAND          const struct seq_event_rec *
       0xC0045401   SNDCTL_TMR_TIMEBASE           int *                           // I-O
       0x00005402   SNDCTL_TMR_START              void
       0x00005403   SNDCTL_TMR_STOP               void

       0x00005404   SNDCTL_TMR_CONTINUE           void
       0xC0045405   SNDCTL_TMR_TEMPO              int *                           // I-O
       0xC0045406   SNDCTL_TMR_SOURCE             int *                           // I-O
       0x40045407   SNDCTL_TMR_METRONOME          const int *
       0x40045408   SNDCTL_TMR_SELECT             int *                           // I-O
       0xCFB85001   SNDCTL_PMGR_IFACE             struct patmgr_info *            // I-O
       0xC0046D00   SNDCTL_MIDI_PRETIME           int *                           // I-O
       0xC0046D01   SNDCTL_MIDI_MPUMODE           const int *
       0xC0216D02   SNDCTL_MIDI_MPUCMD            struct mpu_command_rec *        // I-O
       0x00005000   SNDCTL_DSP_RESET              void
       0x00005001   SNDCTL_DSP_SYNC               void
       0xC0045002   SNDCTL_DSP_SPEED              int *                           // I-O
       0xC0045003   SNDCTL_DSP_STEREO             int *                           // I-O
       0xC0045004   SNDCTL_DSP_GETBLKSIZE         int *                           // I-O
       0xC0045006   SOUND_PCM_WRITE_CHANNELS      int *                           // I-O
       0xC0045007   SOUND_PCM_WRITE_FILTER        int *                           // I-O
       0x00005008   SNDCTL_DSP_POST               void
       0xC0045009   SNDCTL_DSP_SUBDIVIDE          int *                           // I-O
       0xC004500A   SNDCTL_DSP_SETFRAGMENT        int *                           // I-O
       0x8004500B   SNDCTL_DSP_GETFMTS            int *
       0xC0045005   SNDCTL_DSP_SETFMT             int *                           // I-O
       0x800C500C   SNDCTL_DSP_GETOSPACE          struct audio_buf_info *
       0x800C500D   SNDCTL_DSP_GETISPACE          struct audio_buf_info *
       0x0000500E   SNDCTL_DSP_NONBLOCK           void
       0x80045002   SOUND_PCM_READ_RATE           int *
       0x80045006   SOUND_PCM_READ_CHANNELS       int *
       0x80045005   SOUND_PCM_READ_BITS           int *
       0x80045007   SOUND_PCM_READ_FILTER         int *
       0x00004300   SNDCTL_COPR_RESET             void
       0xCFB04301   SNDCTL_COPR_LOAD              const struct copr_buffer *
       0xC0144302   SNDCTL_COPR_RDATA             struct copr_debug_buf *         // I-O
       0xC0144303   SNDCTL_COPR_RCODE             struct copr_debug_buf *         // I-O
       0x40144304   SNDCTL_COPR_WDATA             const struct copr_debug_buf *
       0x40144305   SNDCTL_COPR_WCODE             const struct copr_debug_buf *
       0xC0144306   SNDCTL_COPR_RUN               struct copr_debug_buf *         // I-O
       0xC0144307   SNDCTL_COPR_HALT              struct copr_debug_buf *         // I-O
       0x4FA44308   SNDCTL_COPR_SENDMSG           const struct copr_msg *
       0x8FA44309   SNDCTL_COPR_RCVMSG            struct copr_msg *
       0x80044D00   SOUND_MIXER_READ_VOLUME       int *
       0x80044D01   SOUND_MIXER_READ_BASS         int *
       0x80044D02   SOUND_MIXER_READ_TREBLE       int *
       0x80044D03   SOUND_MIXER_READ_SYNTH        int *
       0x80044D04   SOUND_MIXER_READ_PCM          int *
       0x80044D05   SOUND_MIXER_READ_SPEAKER      int *
       0x80044D06   SOUND_MIXER_READ_LINE         int *
       0x80044D07   SOUND_MIXER_READ_MIC          int *
       0x80044D08   SOUND_MIXER_READ_CD           int *
       0x80044D09   SOUND_MIXER_READ_IMIX         int *
       0x80044D0A   SOUND_MIXER_READ_ALTPCM       int *
       0x80044D0B   SOUND_MIXER_READ_RECLEV       int *
       0x80044D0C   SOUND_MIXER_READ_IGAIN        int *
       0x80044D0D   SOUND_MIXER_READ_OGAIN        int *
       0x80044D0E   SOUND_MIXER_READ_LINE1        int *
       0x80044D0F   SOUND_MIXER_READ_LINE2        int *
       0x80044D10   SOUND_MIXER_READ_LINE3        int *
       0x80044D1C   SOUND_MIXER_READ_MUTE         int *
       0x80044D1D   SOUND_MIXER_READ_ENHANCE      int *
       0x80044D1E   SOUND_MIXER_READ_LOUD         int *
       0x80044DFF   SOUND_MIXER_READ_RECSRC       int *
       0x80044DFE   SOUND_MIXER_READ_DEVMASK      int *
       0x80044DFD   SOUND_MIXER_READ_RECMASK      int *
       0x80044DFB   SOUND_MIXER_READ_STEREODEVS   int *
       0x80044DFC   SOUND_MIXER_READ_CAPS         int *
       0xC0044D00   SOUND_MIXER_WRITE_VOLUME      int *                           // I-O
       0xC0044D01   SOUND_MIXER_WRITE_BASS        int *                           // I-O

       0xC0044D02   SOUND_MIXER_WRITE_TREBLE      int *                           // I-O
       0xC0044D03   SOUND_MIXER_WRITE_SYNTH       int *                           // I-O
       0xC0044D04   SOUND_MIXER_WRITE_PCM         int *                           // I-O
       0xC0044D05   SOUND_MIXER_WRITE_SPEAKER     int *                           // I-O
       0xC0044D06   SOUND_MIXER_WRITE_LINE        int *                           // I-O
       0xC0044D07   SOUND_MIXER_WRITE_MIC         int *                           // I-O
       0xC0044D08   SOUND_MIXER_WRITE_CD          int *                           // I-O
       0xC0044D09   SOUND_MIXER_WRITE_IMIX        int *                           // I-O
       0xC0044D0A   SOUND_MIXER_WRITE_ALTPCM      int *                           // I-O
       0xC0044D0B   SOUND_MIXER_WRITE_RECLEV      int *                           // I-O
       0xC0044D0C   SOUND_MIXER_WRITE_IGAIN       int *                           // I-O
       0xC0044D0D   SOUND_MIXER_WRITE_OGAIN       int *                           // I-O
       0xC0044D0E   SOUND_MIXER_WRITE_LINE1       int *                           // I-O
       0xC0044D0F   SOUND_MIXER_WRITE_LINE2       int *                           // I-O
       0xC0044D10   SOUND_MIXER_WRITE_LINE3       int *                           // I-O
       0xC0044D1C   SOUND_MIXER_WRITE_MUTE        int *                           // I-O
       0xC0044D1D   SOUND_MIXER_WRITE_ENHANCE     int *                           // I-O
       0xC0044D1E   SOUND_MIXER_WRITE_LOUD        int *                           // I-O
       0xC0044DFF   SOUND_MIXER_WRITE_RECSRC      int *                           // I-O

       // <include/linux/umsdos_fs.h>

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

       // <include/linux/vt.h>

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

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

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

       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).

           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
       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

           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

           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

           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
       0x00005404   SNDCTL_TMR_CONTINUE   TCSETSF




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