Sends a priority message on a stream.
The putpmsg system call is identical to the putmsg system call except that it sends a priority message. All information except for flag settings are found in the description for the putmsg system call. The differences in the flag settings are noted in the error codes section.
This system call is part of STREAMS Kernel Extensions.
Item | Description |
---|---|
fd | Specifies a file descriptor referencing an open stream. |
ctlptr | Holds the control part of the message. |
dataptr | Holds the data part of the message. |
band | Indicates the priority band. |
flags | Indicates the priority type of message to be sent. Acceptable
values are:
|
The putpmsg system call is unsuccessful under the following conditions: