HP 3000 Manuals HP 3000 Manuals
Table of Contents
Accessing Files Programmer's Guide
Accessing Files Programmer's Guide : COPYRIGHT NOTICE
Ch 1. Introduction
Disk Files and Device Files
Topics in this Manual
Ch 2. Creating A File
The HPFOPEN Intrinsic
NOWAIT I/O
NOWAIT I/O intrinsics
Aborting NOWAIT I/O
Limitations
The FOPEN Intrinsic
The BUILD Command
The FILE Command
Summary of Overrides
Specifying a Record Format
Fixed-length records
Variable-length records
Undefined-length records
Specifying a File Type
Standard files
KSAM files
RIO files
Circular files
Message files
Specifying Record Size
Specifying Disk Volume Restrictions
Specifying a File Code
Specifying Storage Format
Ch 3. Specifying a File Designation
MPE/iX File Designators
User-Defined Files
Lockwords
Backreferencing files
System-Defined Files
Input/Output sets
Passed files
Using Command Interpreter Variables and Expressions Within File Designators
Parsing and Validating File Designators
Ch 4. Specifying a File Domain
New Files
Temporary Files
Permanent Files
Changing Domains
Searching File Directories
Listing Files
Ch 5. Opening a File
How the File System Opens a File
Which to Use: HPFOPEN or FOPEN
Opening a Disk File
Opening a new disk file
Opening a permanent disk file
Opening a System-Defined File
Opening $STDIN
Opening $STDLIST
Opening a Device File
Device-dependent file characteristics
New and permanent device files
Opening an unlabeled magnetic tape file
Opening a labeled magnetic tape file
Ch 6. Closing a File
How the File System Closes a File
Closing a Disk File
Closing a new disk file as permanent
Closing a permanent disk file
Closing a Magnetic Tape File
Ch 7. Record Selection and Data Transfer
Record Pointers
Record Selection
Sequential access
Random access
Update access
RIO access
Multiple Record Transfers
Control Operations
Spacing
Pointing
Rewinding
Magnetic Tape Considerations
Ch 8. Writing to a File
Sequential Access and Random Access
Writing to a disk file using sequential access
Writing to a disk file using random access
Writing to $STDLIST
Writing Messages to the System Console
Writing a message to the system console
Writing a message to the system console and requesting a reply
Writing to a Magnetic Tape File
Writing to an unlabeled magnetic tape file
Writing to a labeled magnetic tape file
Writing a File Label to a Labeled Tape File
Writing User Data in ANSI Labels
Ch 9. Reading from a File
Sequential Access and Random Access
Reading from a disk file using sequential access
Reading from a disk file using random access
Increasing I/O performance using FREADSEEK
Reading From $STDIN
Reading From a Magnetic Tape File
Reading a File Label from a Labeled Tape File
Ch 10. Updating a File
Ch 11. Accessing a File Using Mapped Access
How to Access a File Mapped
Advantages of mapped access
Short-mapped access
Long-mapped access
Opening a File Mapped
Ch 12. Sharing a File
Simultaneous Access of Files
Exclusive access
Semi-exclusive access
Shared access
Multiaccess
Global multiaccess
Sharing the File Using FLOCK and FUNLOCK
Ch 13. Maintaining File Security
Access Control Definition Security (ACD)
ACD scope
Owners
Files
Devices
How acds work
ACD modes
Managing ACDs with commands and intrinsics
Commands
Intrinsics
Preserving ACDs
Managing ACDs
Creating ACDs
Examples
Listing ACDs
Examples
Copying ACDs
Examples
Modifying ACDs
Adding ACD pairs
Replacing ACDs
Deleting ACDs
Migrating ACDs
Logging system events
Log of system logging configuration
Log of restore
Log of printer access failure
Log of stream initiation
Log of user logging
Log of process creation
Logging a specific user
Logging file security related events
Log of password changes
Log of ACD changes
Traditional Mechanism for File Security
Specifying and restricting file access by access mode
Specifying and restricting file access by type or user
Account-level security
Group-level security
File-level security
Changing security provisions of disk files
Suspending and restoring security provisions
Ch 14. Getting File Information
Displaying General File Information
Displaying permanent file information with LISTFILE
Specifying a file reference
Specifying the list level
Specifying an alternate output file
LISTFILE examples
Displaying temporary file information with LISTFILE...(;TEMP)
Displaying file equations with LISTEQ
Retrieving Specific File Information
[:CMD] FINFO
FFILEINFO
FGETINFO
FLABELINFO
Determining Interactive/Duplicative Files with FRELATE
Displaying File Error Information
FCHECK
FERRMSG
PRINTFILEINFO
Writing a file system error-check procedure
Ap A. HP Pascal/XL Program Examples
Program Example A-2
Program Algorithm
Source code listing
Program Example A-3
Program Algorithm
Source code listing
Program Example A-4
Program Algorithm
Source code listing
Program Example A-5
Program Algorithm
Source code listing
INDEX
Index