SVR5 and SCO OpenServer 5
M_IOCACK(D7str)
M_IOCACK, M_IOCNAK --
signal acknowledgement of M_IOCTL message
Description
M_IOCACK signals the positive acknowledgment of a previous
M_IOCTL(D7str)
message.
The message may contain information sent by the receiving module or driver.
The Stream head returns the information to the user
if there is a corresponding outstanding M_IOCTL request.
M_IOCNAK
signals the negative acknowledgment (failure) of
a previous M_IOCTL message.
When the Stream head receives an M_IOCNAK,
the outstanding
ioctl
request, if any, will fail.
See
M_IOCTL(D7str)
for more information about the format and usage
of these message types.
Message type
Priority.
Version applicability
ddi:
1, 2, 3, 4, 5, 5mp, 6, 6mp, 7, 7mp, 7.1, 7.1mp, 8, 8mp
oddi:
1, 2, 2mp, 3, 3mp, 4, 4mp, 5, 5mp
References
M_IOCTL(D7str),
streamio
19 June 2005
© 2005 The SCO Group, Inc. All rights reserved.
OpenServer 6 and UnixWare (SVR5) HDK - June 2005