man/man9f/put.9f

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 PUT 9F "Apr 28, 1992"
 NAME
put - call a STREAMS put procedure
 SYNOPSIS

#include <sys/stream.h>
#include <sys/ddi.h>


void put(queue_t *q, mblk_t *mp);


 INTERFACE LEVEL

Architecture independent level 1 (DDI/DKI).
 PARAMETERS
q

Pointer to a STREAMS queue.


mp

Pointer to message block being passed into queue.


 DESCRIPTION

put() calls the put procedure ( put(9E) entry point) for the
STREAMS queue specified by q, passing it the message block referred to by
mp. It is typically used by a driver or module to call its own put
procedure.
 CONTEXT

put() can be called from a STREAMS module or driver put or service
routine, or from an associated interrupt handler, timeout, bufcall, or esballoc
call-back. In the latter cases, the calling code must guarantee the validity of
the q argument.

Since put() may cause re-entry of the module (as it is intended to do),
mutexes or other locks should not be held across calls to it, due to the risk
of single-party deadlock (put(9E), putnext(9F), putctl(9F),
qreply(9F)). This function is provided as a DDI/DKI conforming
replacement for a direct call to a put procedure.
 SEE ALSO

put(9E), freezestr(9F), putctl(9F), putctl1(9F),
putnext(9F), putnextctl(9F), putnextctl1(9F),
qprocson(9F), qreply(9F)

Writing Device Drivers

 STREAMS Programming Guide
 NOTES

The caller cannot have the stream frozen when calling this function. See
freezestr(9F).

DDI/DKI conforming modules and drivers are no longer permitted to call put
procedures directly, but must call through the appropriate STREAMS utility
function, for example, put(9E), putnext(9F), putctl(9F), and
qreply(9F). This function is provided as a DDI/DKI conforming replacement
for a direct call to a put procedure.

The put() and putnext() functions should be called only after
qprocson() is finished.