List of Device Configuration Subroutines

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AIX Version 4.3 Kernel Extensions and Device Support Programming Concepts

List of Device Configuration Subroutines

Following are the preexisting conditions for using the device configuration library subroutines:

The caller has initialized the Object Data Manager (ODM) before invoking any of these library subroutines. This is done using the initialize_odm subroutine. Similarly, the caller must terminate the ODM (using the terminate_odm subroutine) after these library subroutines have completed. Only the attrval subroutine does not require initialization and termination.
Since all of these library subroutines (except the attrval, getattr, and putattr subroutines) access the Customized Device Driver (CuDvDr) object class, this class must be exclusively locked and unlocked at the proper times. The application does this by using the odm_lock and odm_unlock subroutines. In addition, those library subroutines that access the CuDvDr object class exclusively lock this class with their own internal locks.

Following are the device configuration library subroutines:

attrval	Verifies that attributes are within range.
busresolve	Allocates bus resources for Micro channel adapters.
genmajor	Generates the next available major number for a device.
genminor	Generates the smallest unused minor number or a requested minor number for a device.
genseq	Generates a sequence number.
getattr	Returns attribute objects from either the Predefined Attribute (PdAt) or Customized Attribute (CuAt) object class, or both.
getminor	Gets from the CuDvDr object class the minor numbers for a given major number.
loadext	Loads or unloads and binds or unbinds device drivers to or from the kernel.
putattr	Updates attribute information in the CuAt object class or creates a new object for the attribute information.
reldevno	Releases the minor number or major number, or both, for a device instance.
relmajor	Releases the major number associated with a specific device driver instance.

Related Information

List of Device Configuration Commands .

Object Data Manager (ODM) Overview, List of ODM Commands and Subroutines in AIX Version 4.3 General Programming Concepts: Writing and Debugging Programs.

Writing a Device Method .

ODM Device Configuration Object Classes,Writing a Define Method, Writing an Undefine Method, Writing an Unconfigure Method, Writing a Configure Method, Writing a Change Method in AIX Version 4.3 Technical Reference: Kernel and Subsystems Volume 2.

Device Methods for Adapter Cards: Guidelines in AIX Version 4.3 Technical Reference: Kernel and Subsystems Volume 2.

Customized Attribute (CuAt) Object Class, Customized Dependency (CuDep) Object Class, Customized Devices (CuDv) Object Class in AIX Version 4.3 Technical Reference: Kernel and Subsystems Volume 2.

Predefined Attribute (PdAt) Object Class, Predefined Connection (PdCn) Object Class in AIX Version 4.3 Technical Reference: Kernel and Subsystems Volume 2.

Adapter-Specific Considerations For the Predefined Devices (PdDv) Object Class in AIX Version 4.3 Technical Reference: Kernel and Subsystems Volume 2.

Adapter-Specific Considerations For the Predefined Attributes (PdAt) Object Class in AIX Version 4.3 Technical Reference: Kernel and Subsystems Volume 2.

How Device Methods Return Errors in AIX Version 4.3 Technical Reference: Kernel and Subsystems Volume 2.

SCSI Subsystem Overview .

Initial Printer Configuration in AIX Version 4.3 Guide to Printers and Printing

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