Manual Pages for UNIX Operating System command usage for man IOC_CONVERT_FROM

Kernel Functions for Drivers                 IOC_CONVERT_FROM(9F)



NAME
     IOC_CONVERT_FROM - determine if there is a need to translate
     M_IOCTL contents.

SYNOPSIS
     #include 



     uint_t IOC_CONVERT_FROM(struct iocblk *iocp);


INTERFACE LEVEL
     Solaris DDI Specific (Solaris DDI)

PARAMETERS
     iocp    A pointer to the M_IOCTL control structure.


DESCRIPTION
     The IOC_CONVERT_FROM macro is used to see if the contents of
     the  current M_IOCTL message had its origin in a different C
     Language Type Model.

RETURN VALUES
     The  IOC_CONVERT_FROM()  function  returns   the   following
     values:

     IOC_ILP32    This is an LP64 kernel and  the   M_IOCTL  ori-
                  ginated in an ILP32 user process.


     IOC_NONE     The M_IOCTL message uses the  same  C  Language
                  Type Model as this calling module or driver.


CONTEXT
     The IOC_CONVERT_FROM() macro can be called from user, inter-
     rupt, or kernel context.

SEE ALSO
     ddi_model_convert_from(9F)


     Writing Device Drivers


     STREAMS Programming Guide







SunOS 5.11          Last change: 16 Jan 2006                    1