streamtab(9s) [minix man page]

streamtab(9S)						    Data Structures for Drivers 					     streamtab(9S)

NAME

       streamtab - STREAMS entity declaration structure

SYNOPSIS

       #include <sys/stream.h>

INTERFACE LEVEL

       Architecture independent level 1 (DDI/DKI).

DESCRIPTION

       Each STREAMS driver or module must have a streamtab structure.

       streamtab  is made up of qinit structures for both the read and write queue portions of each module or driver. Multiplexing drivers require
       both upper and lower qinit structures. The qinit structure contains the entry points through  which  the  module  or  driver  routines  are
       called.

       Normally, the read QUEUE contains the open and close routines. Both the read and write queue can contain put and service procedures.

STRUCTURE MEMBERS

       struct qinit    *st_rdinit;    /* read QUEUE */
       struct qinit    *st_wrinit;    /* write QUEUE */
       struct qinit    *st_muxrinit;  /* lower read QUEUE*/
       struct qinit    *st_muxwinit;  /* lower write QUEUE*/

SEE ALSO

       qinit(9S)

       STREAMS Programming Guide

SunOS 5.10							    11 Apr 1991 						     streamtab(9S)

strmod_del(2)							System Calls Manual						     strmod_del(2)

NAME

       strmod_del - Deletes STREAMS modules and drivers

SYNOPSIS

       #include <sys/stream.h> int strmod_del (      dev_t devno,      struct streamtab *streamtab,	 struct streamadm *streamadm);

PARAMETERS

       The  device number (cdevsw slot) to use when removing a STREAMS driver.	This parameter is ignored for modules.	A pointer to the streamtab
       structure that contains the entry points.  The actual streamtab structure has to be allocated permanently in the driver's  data	space  (as
       specified  by System V Release 3.2).  A pointer to the streamadm structure that contains the administration parameters for the STREAMS mod-
       ule or driver.  The actual streamadm structure is needed only for the duration of the call.  It does not have to be  allocated  permanently
       by  the	caller.  The sa_version field must be either OSF_STREAMS_10 or OSF_STREAMS_11, and the sa_flags field must be either STR_IS_DEVICE
       or STR_IS_MODULE.

DESCRIPTION

       The strmod_del() interface is used to remove configured STREAMS modules and drivers from the kernel.  Specifically, it allows STREAMS driv-
       ers to remove entry points in character device switch tables.  Modules are removed from the STREAMS modules switch.

       When removing a driver only, strmod_del() takes a device number, which is used to determine the device switch slot for the entry points.

       The streamtab parameter is a pointer to a traditional (System V Release 3.2) streamtab structure.  The structure contains pointers to entry
       points for the module's read and write queue routines.

       The streamadm parameter points to a streamadm structure.  The streamadm structure provides additional information that  is  required  under
       Tru64 UNIX.

NOTES

       The device number can be constructed from the major number through the makedev macro, which is defined in /usr/include/sys/types.h.

RETURN VALUES

       Upon  successful  completion, strmod_del() returns 0.  Otherwise, it returns one of the following values: The sa_version or sa_flags fields
       in the streamadm structure are not set correctly.  The entry is in use and cannot be removed.  The entry to be removed is not  found.   The
       devno is out of range, or the devsw entry was not in use.

RELATED INFORMATION

       Data Structures: streamadm(4).

       Routines: strmod_add(2).  delim off

																     strmod_del(2)