putctl1(9f) [plan9 man page]
putctl1(9F) Kernel Functions for Drivers putctl1(9F) 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
putctl1(), 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) rou- tine 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
putctl1() can be called from user or interrupt 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 SunOS 5.10 11 Apr 1991 putctl1(9F)
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putctl1(9F) Kernel Functions for Drivers putctl1(9F) 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
putctl1(), 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) rou- tine 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
putctl1() can be called from user or interrupt 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 SunOS 5.10 11 Apr 1991 putctl1(9F)