STRCTLSZ

STRCTLSZ sets the maximum number of control bytes allowed in the control portion of any streams message on the system.

Acceptable Values:

Minimum
0
Maximum
Memory limited
Default
1024 bytes

Specify integer value. For more information, see Specifying Parameter Values.

Description

STRCTLSZ limits the number of bytes of control data that can be inserted by putmsg() in the control portion of any streams message on the system. If the parameter is set to zero, there is no limit on how many bytes can be placed in the control segment of the message.

putmsg() returns ERANGE if the buffer being sent is larger than the current value of STRCTLSZ.

Additional Information