suse man page for putnextctl1

Query: putnextctl1

OS: suse

Section: 9f

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

putnextctl1(9F) 					   Kernel Functions for Drivers 					   putnextctl1(9F)

NAME
putnextctl1 - send a control message with a one-byte parameter to a queue SYNOPSIS
#include <sys/stream.h> int putnextctl1(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
putnextctl1(), like putctl1(9F), tests the type argument to make sure a data type has not been specified, and attempts to allocate a mes- sage 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. put- nextctl1() fails if type is M_DATA, M_PROTO, or M_PCPROTO, or if a message block cannot be allocated. If successful, putnextctl1() calls the put(9E) routine of the queue pointed to by q with the newly allocated and initialized message. A call to putnextctl1(q,type, p) is an atomic equivalent of putctl1(q->q_next, type, p). The STREAMS framework provides whatever mutual exclusion is necessary to insure that dereferencing q through its q_next field and then invoking putctl1(9F) proceeds without interference from other threads. putnextctl1() should always be used in preference to putctl1(9F) 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
putnextctl1() can be called from user or interrupt context. EXAMPLES
See the putnextctl(9F) function page for an example of putnextctl1(). SEE ALSO
put(9E), allocb(9F), datamsg(9F), putctl1(9F), putnextctl(9F) Writing Device Drivers STREAMS Programming Guide SunOS 5.10 29 Mar 1993 putnextctl1(9F)
Related Man Pages
putnextctl(9f) - debian
putnextctl(9f) - mojave
putnextctl(9f) - redhat
putnextctl(9f) - linux
putnextctl(9f) - xfree86
Similar Topics in the Unix Linux Community
How to restrict user to a specific directory in solaris 10
Migrating to UNIX
Cut command on RHEL 6.8 compatibility issues
A (ksh) Library For and From UNIX.com
The Future of the PM (Private Message) System at UNIX.com