IOCTL :Facing problems while acccessing data from kernel space

From: rashmi ns (nsrashmi_at_gmail.com)
Date: 09/28/05

  • Next message: Simon 'corecode' Schubert: "Re: IOCTL :Facing problems while acccessing data from kernel space" 
    Date: Wed, 28 Sep 2005 13:40:46 +0530
To: bugi@lists.redbrick.dcu.ie, freebsd-hackers@freebsd.org

    > Hello All ,

    Sorry for resending the message many times !!!.

    I was trying to add a new ioctl command like
    > #define HDLCMODE _IOR('6',0xF,int)
    > when i trying to uprintf the data which was sent from the user-space in
    > the device-driver-ioctl-routine i'll get a different value than which was
    > passed. Can anybody please tell me why this is happening . I pass the
    > address of an integer where data is stored from the user space as third arg
    > to the ioctl call .
    > Thanks and regards,
    > Rashmi.N.S
    >
    >
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  • Next message: Simon 'corecode' Schubert: "Re: IOCTL :Facing problems while acccessing data from kernel space"