tk_oref_dev

Reference Device

Reference Device

[C Language Interface]





ID devid = tk_ref_dev ( UB *devnm, T_RDEV *pk_rdev ) ;
ID devid = tk_oref_dev ( ID dd, T_RDEV *pk_rdev ) ;

[Parameters]

UB*	devnm	Device name


ID	dd	Device descriptor


T_RDEV*	pk_rdev	Device information
[Return Parameters]

ID	devid	Device ID


	or	Error code






pk_rdev detail:
	ATR devatr Device attributes 
	W blksz 			    Block size of device-specific data (-1: unknown) 
	INT nsub    subunit count 
	INT subno  0: physical device: 1 to nsub: subunit number+1 
	(Implementation-dependent information may be added beyond this point.)

[Error Codes]

E_NOEXS	The device specified in devnm does not exist.
[Description]

Gets information about the device specified in devnm or dd and puts the result in pk_rdev.

If pk_rdev = NULL is set, the device information is not stored. nsub indicates the number of physical device subunits belonging to the device specified in devnm or dd.

The device ID of the device specified in devnm is passed in the return code.

[Difference with T-Kernel 1.00.00]

blksz, the member of T_RDEV, is of W type instead of INT type.

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