DEVICE_GET_SOFTC(9) Kernel Developer's Manual DEVICE_GET_SOFTC(9) NAME device_get_softc -- access driver private instance variables SYNOPSIS #include <sys/param.h> #include <sys/bus.h> void * device_get_softc(device_t dev); DESCRIPTION Return the driver-specific software context of dev. The softc is automati- cally allocated and zeroed when the device is attached. The softc is also initialized and present when a device is probed, but is subject to caveats as described in DEVICE_PROBE(9). The size of the allocation is determined by the device's driver_t information used to define the driver. The softc typically encapsulates the state of this instance of the device. Driver writers are discouraged from using their own softc management mecha- nisms. Driver writers should not copy such mechanisms found in drivers in the tree that predate this function. RETURN VALUES The pointer to the driver-specific instance variable is returned. SEE ALSO device(9), DEVICE_PROBE(9), device_set_softc(9), driver(9) AUTHORS This manual page was written by Doug Rabson. FreeBSD 15.1 January 21, 2015 DEVICE_GET_SOFTC(9)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | SEE ALSO | AUTHORS
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