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Kernel Functions for Drivers

makedevice(9F)

INTERFACE LEVEL
PARAMETERS
DESCRIPTION
RETURN VALUES
CONTEXT
SEE ALSO

NAME

makedevice - make device number from major and minor numbers

SYNOPSIS

#include <sys/types.h> #include <sys/mkdev.h> #include <sys/ddi.h> dev_t makedevice(major_t majnum, minor_t minnum);

INTERFACE LEVEL

Architecture independent level 1 (DDI/DKI).

PARAMETERS

majnum: Major device number.
minnum: Minor device number.

makedevice() creates a device number from a major and minor device number. makedevice() should be used to create device numbers so the driver will port easily to releases that treat device numbers differently.

RETURN VALUES

The device number, containing both the major number and the minor number, is returned. No validation of the major or minor numbers is performed.

CONTEXT

makedevice() can be called from user or interrupt context.