This guide documents OpenVault release 1.4 running on IRIX operating systems.
OpenVault is a package of mediation software that helps other applications manage removable media:
This facility can support a wide range of removable media libraries, as well as a variety of drives interfaced to these libraries.
The modular design of OpenVault eases the task of adding support for new robotic libraries and drives.
User interfaces are provided by OpenVault client applications, which perform I/O to drives using standard system facilities after OpenVault has mounted and loaded media for the application.
The OpenVault Infrastructure Programmer's Guide describes how to program the control program components that manage removable media drives and libraries. In OpenVault, the media library manager (MLM) fulfills requests from multiple client applications, directing media operations such as mount and unmount that are performed by control programs.
This guide is intended for system programmers who are adding support for removable media libraries or drives. By conforming to the standard OpenVault infrastructure, developers can eliminate the need to write custom interfaces for each removable media library and drive in the marketplace.
Here is an overview of the material in this guide:
Chapter 1, “OpenVault Overview”, contains a thumbnail sketch of components.
Chapter 2, “Common Implementation Issues”, covers topics you should know about before constructing an OpenVault control program.
Chapter 3, “Abstract Library Interface (ALI) Language”, describes the language used for library control programs.
Chapter 4, “Programming a Library Control Program (LCP)”, offers a tutorial introduction to creating a library control program.
Chapter 5, “Abstract Drive Interface (ADI) Language”, describes the language used for drive control programs.
Chapter 6, “Programming a Drive Control Program (DCP)”, offers a tutorial introduction to creating a drive control program.
Appendix A, “Sample Implementations”, contains control program source code.
Appendix B, “Return Values and Ready States”, lists these by control program.
Appendix C, “LCP and DCP Syntax”, specifies control program syntax.
“Glossary” and index are included at the end.
The following documents contain additional information that may be helpful:
| OpenVault Application Programmer's Guide | Describes the client side of OpenVault, showing how applications can make OpenVault requests in a prescribed format.
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| OpenVault Operator's and Administrator's Guide | Describes how to develop OpenVault applications and device support. |
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