EXE$ - Operating System Interface

Overview

VX/EXE$ provides a call-compatible implementation of OpenVMS process execution and image management APIs for x86 and ARM Linux. It enables OpenVMS applications to manage process control, file handling, and execution workflows while maintaining compatibility with existing OpenVMS logic.

Key Features

• Fully compatible with OpenVMS EXE$ APIs.

• Supports process execution, file management, data retrieval, and system interactions.

• Allows seamless migration of OpenVMS applications that rely on EXE$ routines.

• Integrates with VX/RT to provide full OpenVMS execution and image management capabilities on x86 and ARM Linux.

• Maintains OpenVMS process control semantics to ensure consistent behavior on Linux.

VX/EXE$ Callable Routines

EXE$ API	Function
EXE$ASCTIM	Converts binary time to ASCII format
EXE$CANCEL	Cancels an outstanding I/O request
EXE$CLOSE	Closes a file or device connection
EXE$CONNECT	Establishes a connection between processes or files
EXE$COPY	Copies data between files or devices
EXE$CREATE	Creates a new file or process
EXE$DELETE	Deletes a specified file or record
EXE$DISCONNECT	Terminates a process connection
EXE$DISPLAY	Outputs formatted data to the display
EXE$ERASE	Clears data from a file or screen
EXE$FLUSH	Flushes buffered data to disk or device
EXE$FREE	Releases allocated resources
EXE$GET	Retrieves data from a file or input device
EXE$GETQUI	Retrieves queue information synchronously
EXE$GETQUIW	Retrieves queue information asynchronously
EXE$GETTIM	Retrieves the current system time
EXE$OPEN	Opens a file or device for access
EXE$PUT	Writes data to a file or output device
EXE$QIO	Queues an I/O operation
EXE$READ	Reads data from a file or device
EXE$RELEASE	Releases resources held by a process
EXE$RENAME	Renames a file or resource
EXE$REWIND	Moves the file pointer to the beginning
EXE$SEARCH	Searches for a pattern in a file or dataset
EXE$SYNCH	Synchronizes process execution
EXE$TRUNCATE	Trims a file to a specified size
EXE$UPDATE	Modifies an existing file or resource
EXE$WRITE	Writes data to an output device or file

Why Use VX/EXE$?

• Preserves OpenVMS execution logic, enabling direct porting of applications.

• Provides full compatibility with OpenVMS EXE$ process and file management functions.

• Supports critical OpenVMS execution workflows, including process connections, file operations, and resource management.

• Seamlessly integrates into the VX/RT ecosystem for OpenVMS compatibility on x86 and ARM Linux.

VX/EXE$ ensures that OpenVMS applications requiring EXE$ services can be migrated without major modifications, preserving productivity and minimizing development costs.

EXE$ - Operating System Interface

Overview

Key Features

VX/EXE$ Callable Routines

Why Use VX/EXE$?

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