MPE/iX, Multiprogramming Executive with Integrated POSIX, is the latest
in a series of forward-compatible operating systems for the HP 3000
line of computers.
In HP documentation and in talking with HP 3000 users, you will
encounter references to MPE XL, the direct predecessor of MPE/iX.
MPE/iX is a superset of MPE XL. All programs written for MPE XL
will run without change under MPE/iX. You can continue to use MPE XL
system documentation, although it may not refer to features added to
the operating system to support POSIX (for example, hierarchical
directories).
Finally, you may encounter references to MPE V, which is the operating
system for HP 3000s, not based on PA-RISC architecture. MPE V
software can be run on the PA-RISC (Series 900) HP 3000s in what
is known as compatibility mode.
Accessing Files Programmer's Guide (32650-90017) is written for an experienced programmer who has a working knowledge of MPE/iX and is familiar with:
at least one programming language
compiling, linking, and executing a program on MPE/iX
This manual describes how you can use the MPE/iX File System to create files
and manage the data stored in those files. In addition to discussing file
system methods and operations involved with file and data manipulation, this
manual describes system intrinsics and commands useful for file management and
data transfer. Examples are provided throughout this manual that demonstrate
how to use file system intrinsics and commands in various applications.
This manual is part of the MPE/iX Programmer's Series. This series consists of the MPE/iX Intrinsics Reference Manual (32650-90028) and a set of task-oriented programmer's guides.
This manual contains the following chapters and appendix:
- Chapter 1
Introduction provides an overview of the MPE/iX File System.
- Chapter 2
Creating a File discusses file creation considerations and describes how to create a file.
- Chapter 3
Specifying a File Designator describes how you designate an MPE/iX file.
- Chapter 4
Specifying a Domain describes how you can specify your file as being either a new file, a temporary file, or an old file. MPE/iX then places the file in the appropriate file directory.
- Chapter 5
Opening a File illustrates through program examples how you can open a file.
- Chapter 6
Closing a File illustrates, through program examples, how you close a file.
- Chapter 7
Record Selection and Data Transfer introduces system intrinsics you can use to select records and transfer data between your program and a file.
- Chapter 8
Writing to a File illustrates, through program examples, how you can transfer data from your program to a file.
- Chapter 9
Reading from a File illustrates, through program examples, how you can transfer data to your program from a file.
- Chapter 10
Updating a File illustrates, through program examples, how you can update records in a file.
- Chapter 11
Accessing a File Using Mapped Access describes how you use the mapped access method to access a file.
- Chapter 12
Sharing a File discusses methods you can use to share a file with other users.
- Chapter 13
Maintaining File Security describes how you can maintain secure files and restrict file access.
- Chapter 14
Getting File Information describes the intrinsics you can use to obtain information about file.
- Appendix A
HP Pascal Program Example offers you HP Pascal program
examples to help you better understand how to use file system intrinsics to perform file access tasks.
