IOC_CONVERT_FROM(9F) Kernel Functions for Drivers IOC_CONVERT_FROM(9F)
NAME
IOC_CONVERT_FROM - determine if there is a need to translate M_IOCTL contents.
SYNOPSIS
#include <sys/stream.h>
uint_t IOC_CONVERT_FROM(struct iocblk *iocp);
INTERFACE LEVEL
Solaris DDI Specific (Solaris DDI)
PARAMETERS
iocp A pointer to the M_IOCTL control structure.
DESCRIPTION
The IOC_CONVERT_FROM macro is used to see if the contents of the current M_IOCTL message had its origin in a different C Language Type
Model.
RETURN VALUES
IOC_CONVERT_FROM() returns the following values:
IOC_ILP32 This is an LP64 kernel and the M_IOCTL originated in an ILP32 user process.
IOC_NONE The M_IOCTL message uses the same C Language Type Model as this calling module or driver.
CONTEXT
IOC_CONVERT_FROM() can be called from user or interrupt context.
SEE ALSO
ddi_model_convert_from(9F)
Writing Device Drivers
STREAMS Programming Guide
SunOS 5.10 11 Nov 1996 IOC_CONVERT_FROM(9F)
