MPE/iX Developer's Kit Reference Manual Volume I: HP 3000 MPE/iX Computer Systems

Chapter 3 MPE/iX Library Implementation Considerations

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Table of Contents

Naming File System Objects

POSIX File Types
Creating and Opening Files
Input/Output Considerations
Additional Implementation Considerations

Directories

MPE/iX Directories
MPE/iX Directory Features
Additional Implementation Considerations

Access Control

MPE/iX Access Control Definitions
Mapping Between POSIX.1 and ACD Access Permissions
Mapping Between POSIX.1 and ACD File User Classes
If the ACD Has Been Modified or Removed
Summary of fstat() and stat() Behavior
Summary of chmod() Behavior
Determining a Process's Access to a File or Directory
Returning Information about Access Permissions
MPE/iX Save Files (SF) Capability
MPE/iX Lockwords

Supported Signal Functions
Signal Descriptions
Additional Implementation Considerations

Process Management

Creating a New Process
Process Termination
Additional Implementation Considerations

This chapter describes important implementation details that you should understand when using functions provided by the MPE/iX library. Implementation details are divided into the following subjects:

naming file system objects
files
directories
signals
process management
access control
Pipes and FIFOs
Privileged files in HFS
Program files in HFS
HFS aware loader
Record level locking
CI Environment Variables
Symbolic Links
Device files
File Emulation
Read/Write of TAR tapes from the shell


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