osx man page for device_get_ivars

DEVICE_GET_IVARS(9)					   BSD Kernel Developer's Manual				       DEVICE_GET_IVARS(9)

NAME

     device_get_ivars, device_set_ivars -- access bus private variables

SYNOPSIS

     #include <sys/param.h>
     #include <sys/bus.h>

     void *
     device_get_ivars(device_t dev);

     void
     device_set_ivars(device_t dev, void *ivar);

DESCRIPTION

     The device_get_ivars() function returns the bus-specific instance variables of a device.

     The device_set_ivars() function sets the bus-specific instance variables of a device.

     Typically, only bus drivers will use these functions.  The kernel assumes that the bus driver will manage this memory, and no automatic mem-
     ory allocation or deallocation happens.  Client drivers should access ivars through the BUS_READ_IVAR(9) interface instead.

SEE ALSO

     device(9)

AUTHORS

     This manual page was written by Doug Rabson.

BSD
								   June 16, 1998							       BSD