Content-type: text/html Man page of putctl1

putctl1

Section: Kernel Functions for Drivers (9F)
Updated: 16 Jan 2006
Index Return to Main Contents
 

NAME

putctl1 - send a control message with a one-byte parameter to a queue  

SYNOPSIS

#include <sys/stream.h>

int putctl1(queue_t *q, int type, int p);  

INTERFACE LEVEL

Architecture independent level 1 (DDI/DKI).  

PARAMETERS

q Queue to which the message is to be sent.

type Type of message.

p One-byte parameter.

 

DESCRIPTION

The putctl1() function, like putctl(9F), tests the type argument to make sure a data type has not been specified, and attempts to allocate a message block. The p parameter can be used, for example, to specify how long the delay will be when an M_DELAY message is being sent. putctl1() fails if type is M_DATA, M_PROTO, or M_PCPROTO, or if a message block cannot be allocated. If successful, putctl1() calls the put(9E) routine of the queue pointed to by q with the newly allocated and initialized message.  

RETURN VALUES

On success, 1 is returned. 0 is returned if type is a data type, or if a message block cannot be allocated.  

CONTEXT

The putctl1() function can be called from user, interrupt, or kernel context.  

EXAMPLES

See the putctl(9F) function page for an example of putctl1().  

SEE ALSO

put(9E), allocb(9F), datamsg(9F), putctl(9F), putnextctl1(9F)

Writing Device Drivers

STREAMS Programming Guide


 

Index

NAME
SYNOPSIS
INTERFACE LEVEL
PARAMETERS
DESCRIPTION
RETURN VALUES
CONTEXT
EXAMPLES
SEE ALSO

This document was created by man2html, using the manual pages.
Time: 02:39:44 GMT, October 02, 2010