putctl1 man page on IRIX

putctl1 man page on IRIX

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putctl1(D3)							   putctl1(D3)

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

SYNOPSIS
     #include <sys/stream.h>
     #include <sys/ddi.h>
     int putctl1(queue_t *q, int type, int param);

   Arguments
     q	       Pointer to the queue to which the message is to be sent.

     type      Message type (must be a control type).

     param     One-byte parameter.

DESCRIPTION
     putctl1, like putctl(D3), tests the type argument to make sure a data
     type has not been specified, and attempts to allocate a message block.
     The param parameter can be used, for example, to specify the signal
     number when an M_PCSIG 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(D2) routine of the queue pointed to
     by q, passing it the allocated message.

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

   Level
     Base or Interrupt.

   Synchronization Constraints
     Does not sleep.

     Driver-defined basic locks, read/write locks, and sleep locks may not be
     held across calls to this function.

   Examples
     See putctl(D3) for an example of putctl1.

REFERENCES
     put(D2), putctl(D3)

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