Difference between Major and Minor in AIX Post: 302318839

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makedevice

makedevice(9F)                                             Kernel Functions for Drivers                                             makedevice(9F)

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.

DESCRIPTION

       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  per-
       formed.

CONTEXT

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

SEE ALSO

       getmajor(9F), getminor(9F)

SunOS 5.10                                                          11 Apr 1991                                                     makedevice(9F)