VFS File I/O

Modules
	VFS File Producers
	VFS File Consumers

Detailed Description

Adapters for using VFS files as stream buffer producers and consumers.

These functions provide convenient ways to read from or write to VFS files (Virtual File System) using the stream buffer abstraction, supporting both push and pull modes.

Producer (Input) Functions:

• sbufFileIn() - Read entire file contents into stream buffer
• sbufFilePRegisterPull() - Register VFS file as pull-mode producer

Consumer (Output) Functions:

• sbufFileOut() - Write all stream buffer data to VFS file
• sbufFileCRegisterPush() - Register VFS file as push-mode consumer

Note: For low-level filesystem operations (FSFile), use the functions in sbfsfile.h instead.