- return driver's major device number
#include <sys/ddi.h> #include <sys/sunddi.h> major_t ddi_driver_major(dev_info_t *dip);
Solaris DDI specific (Solaris DDI)
ddi_driver_major() returns the major device number for the driver associated with the supplied dev_info node. This value can then be used as an argument to makedevice(9F) to construct a complete dev_t.
A pointer to the device's dev_info structure.
ddi_driver_major() returns the major number of the driver bound to a device, if any, or DDI_MAJOR_T_NONE otherwise.
ddi_driver_major() can be called from kernel or interrupt context.
Writing Device Drivers