MIOCPULLUP(9F)MIOCPULLUP(9F)NAMEmiocpullup - Prepare the payload of an M_IOCTL message for access
SYNOPSIS
#include <sys/stream.h>
#include <sys/strsun.h>
int miocpullup(mblk_t *mp, size_t size);
INTERFACE LEVEL
Solaris DDI specific (Solaris DDI).
PARAMETERS
mp
M_IOCTL message.
size
Number of bytes to prepare.
DESCRIPTION
The miocpullup() function prepares the payload of the specified M_IOCTL
message for access by ensuring that it consists of at least size bytes
of data.
If the M_IOCTL message is transparent, or its total payload is less
than size bytes, an error is returned. Otherwise, the payload is con‐
catenated as necessary to provide contiguous access to at least size
bytes of data. As a special case, if size is zero, miocpullup()
returns successfully, even if no payload exists.
RETURN VALUES
Zero is returned on success. Otherwise an errno value is returned indi‐
cating the problem.
CONTEXT
This function can be called from user, kernel or interrupt context.
SEE ALSO
STREAMS Programming Guide
Jun 9, 2004 MIOCPULLUP(9F)
