Manual Pages for UNIX Operating System command usage for man DB_BASE

Kernel Functions for Drivers                          DB_BASE(9F)



NAME
     DB_BASE, DB_LIM, DB_REF, DB_TYPE - Data block access macros

SYNOPSIS
     #include 
     #include 



     uchar_t *DB_BASE(mblk_t *mp);


     uchar_t *DB_LIM(mblk_t *mp);


     uchar_t DB_TYPE(mblk_t *mp);


     uchar_t DB_REF(mblk_t *mp);


INTERFACE LEVEL
     Solaris DDI specific (Solaris DDI).

PARAMETERS
     mp    Message block to be accessed.


DESCRIPTION
     These macros provide compact access to public members of the
     datab(9S)  structure  associated  with the specified message
     block.


     In all  cases,  these  macros  are  equivalent  to  directly
     accessing  the underlying fields of the datab(9S) associated
     with the specified message block. Specifically:


     DB_BASE(mp) is equivalent to mp->b_datap->db_base.


     DB_LIM(mp) is equivalent to mp->b_datap->db_lim.


     DB_TYPE(mp) is equivalent to mp->b_datap->db_type.


     DB_REF(mp) is equivalent to mp->b_datap->db_ref.

CONTEXT




SunOS 5.11          Last change: 9 June 2004                    1






Kernel Functions for Drivers                          DB_BASE(9F)



     These functions can be called from user, kernel or interrupt
     context.

SEE ALSO
     msgb(9S), datab(9S)


     STREAMS Programming Guide















































SunOS 5.11          Last change: 9 June 2004                    2