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devclass_get_softc(9) [osx man page]

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

NAME
devclass_get_softc -- translate unit number to driver private structure SYNOPSIS
#include <sys/param.h> #include <sys/bus.h> void * devclass_get_softc(devclass_t dc, int unit); DESCRIPTION
This function retrieves the driver private instance variables for the device with the given unit number and returns it. RETURN VALUES
If the device exists, its driver-private variables are returned, otherwise NULL is returned. SEE ALSO
device(9) AUTHORS
This manual page was written by Doug Rabson. BSD
June 16, 1998 BSD

Check Out this Related Man Page

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

NAME
devclass -- object representing a class of devices SYNOPSIS
typedef struct devclass *devclass_t; DESCRIPTION
The devclass object has two main functions in the system. The first is to manage the allocation of unit numbers for device instances and the second is to hold the list of device drivers for a particular bus type. Each devclass has a name and there cannot be two devclasses with the same name. This ensures that unique unit numbers are allocated to device instances. Beware that this means devclass must be the same for different bus attachments of the same device driver. SEE ALSO
devclass_add_driver(9), devclass_delete_driver(9), devclass_find(9), devclass_find_driver(9), devclass_get_device(9), devclass_get_devices(9), devclass_get_maxunit(9), devclass_get_name(9), devclass_get_softc(9), device(9), driver(9) AUTHORS
This manual page was written by Doug Rabson. BSD June 16, 1998 BSD
Man Page

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