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BUS_GET_PROPERTY(9) FreeBSD Kernel Developer's Manual BUS_GET_PROPERTY(9) NAME BUS_GET_PROPERTY - get child's specific property SYNOPSIS #include <sys/param.h> #include <sys/bus.h> ssize_t BUS_GET_PROPERTY(device_t dev, device_t child, const char *propname, void *propvalue, size_t size, device_property_type_t type); DESCRIPTION The BUS_GET_PROPERTY() method is called from driver code which wants to access a child's specific data stored on the bus. A property has a name and an associated value. Implementation shall copy to propvalue at most size bytes. BUS_GET_PROPERTY() supports different property types specified via the type argument. The size is guaranteed to be a multiple of the underlying property type. If a type is not supported, BUS_GET_PROPERTY() shall return -1. NOTES If propvalue is NULL or size is zero, the implementation shall return only the size of the property. RETURN VALUES The property size if successful, otherwise -1. SEE ALSO device(9), device_get_property(9) AUTHORS This manual page was written by Bartlomiej Grzesik. FreeBSD 14.1-RELEASE-p8 February 18, 2022 FreeBSD 14.1-RELEASE-p8