getmajor man page on IRIX

getmajor man page on IRIX

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getmajor(D3)							  getmajor(D3)

NAME
     getmajor - get internal major device number

SYNOPSIS
     #include <sys/types.h>
     #include <sys/ddi.h>
     major_t getmajor(dev_t dev);

   Arguments
     dev       Internal device number.

DESCRIPTION
     The getmajor function extracts the internal major number from a device
     number.

   Return Values
     The internal major number.

USAGE
     No validity checking is performed.	 If dev is invalid, an invalid number
     is returned.

     See getemajor(D3) for an explanation of external and internal major
     numbers.

   Level
     Initialization, Base or Interrupt.

   Synchronization Constraints
     Does not sleep.

     Driver-defined basic locks, read/write locks, and sleep locks may be held
     across calls to this function.

REFERENCES
     etoimajor(D3), getemajor(D3), geteminor(D3), getminor(D3), makedevice(D3)

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