Content-type: text/html Man page of miocpullup

miocpullup

Section: Kernel Functions for Drivers (9F)
Updated: 9 June 2004
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NAME

miocpullup - 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 concatenated 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 indicating the problem.  

CONTEXT

This function can be called from user, kernel or interrupt context.  

SEE ALSO

STREAMS Programming Guide


 

Index

NAME
SYNOPSIS
INTERFACE LEVEL
PARAMETERS
DESCRIPTION
RETURN VALUES
CONTEXT
SEE ALSO

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Time: 02:39:40 GMT, October 02, 2010