API_DOCUMENTATION.md

🔧 VANTIS OS API Documentation

📋 Table of Contents

• Introduction
• Core APIs
  • Kernel API
  • Memory Management API
  • Process Management API
  • File System API
• Security APIs
  • Vantis Vault API
  • Authentication API
  • Wraith Mode API
• System APIs
  • Neural Scheduler API
  • Hardware Abstraction API
  • IPC API
• User Space APIs
  • Graphics API
  • Audio API
  • Network API
• Developer Tools
• Examples

---

Introduction

VANTIS OS provides a comprehensive set of APIs for system programming, application development, and security operations. All APIs are designed with safety, performance, and formal verification in mind.

Design Principles

• Memory Safety: All APIs leverage Rust's ownership system
• Zero-Cost Abstractions: No runtime overhead
• Formal Verification: Critical APIs include mathematical proofs
• Type Safety: Strong typing prevents common errors
• Async-First: Native support for asynchronous operations

API Stability Guarantees

API Level	Stability	Breaking Changes
Core APIs	Stable	Semantic versioning
Security APIs	Stable	Semantic versioning
System APIs	Beta	May change
Experimental APIs	Unstable	No guarantees

---

Core APIs

Kernel API

The kernel API provides low-level system operations and is the foundation of VANTIS OS.

System Calls

/// Initialize the kernel subsystem
pub fn kernel_init() -> Result<(), KernelError>;

/// Get kernel version information
pub fn kernel_version() -> KernelVersion;

/// Query kernel capabilities
pub fn kernel_capabilities() -> Vec<Capability>;

/// Shutdown the system
pub fn kernel_shutdown(mode: ShutdownMode) -> !;

Example: Kernel Initialization

use vantis::kernel::{kernel_init, kernel_version};

fn main() -> Result<(), Box<dyn std::error::Error>> {
    // Initialize kernel
    kernel_init()?;
    
    // Get version info
    let version = kernel_version();
    println!("VANTIS OS v{}.{}.{}", 
        version.major, 
        version.minor, 
        version.patch
    );
    
    Ok(())
}

Error Handling

pub enum KernelError {
    InitializationFailed,
    PermissionDenied,
    ResourceExhausted,
    InvalidOperation,
}

---

Memory Management API

Provides safe memory allocation and management with formal verification guarantees.

Memory Allocation

/// Allocate memory with specific alignment
pub fn alloc_aligned(size: usize, align: usize) -> Result<*mut u8, AllocError>;

/// Deallocate previously allocated memory
pub unsafe fn dealloc(ptr: *mut u8, size: usize);

/// Query memory statistics
pub fn memory_stats() -> MemoryStats;

/// Set memory protection flags
pub fn protect_memory(addr: *mut u8, size: usize, flags: ProtectionFlags) 
    -> Result<(), MemoryError>;

Memory Regions

pub struct MemoryRegion {
    pub start: usize,
    pub size: usize,
    pub flags: ProtectionFlags,
}

pub enum ProtectionFlags {
    Read = 0b001,
    Write = 0b010,
    Execute = 0b100,
}

Example: Safe Memory Allocation

use vantis::memory::{alloc_aligned, dealloc, ProtectionFlags};

fn allocate_buffer(size: usize) -> Result<Vec<u8>, AllocError> {
    let ptr = alloc_aligned(size, 16)?;
    
    // Create safe wrapper
    let buffer = unsafe {
        Vec::from_raw_parts(ptr, size, size)
    };
    
    Ok(buffer)
}

---

Process Management API

Manage processes, threads, and scheduling with AI-powered optimization.

Process Operations

/// Create a new process
pub fn process_create(config: ProcessConfig) -> Result<ProcessId, ProcessError>;

/// Terminate a process
pub fn process_kill(pid: ProcessId, signal: Signal) -> Result<(), ProcessError>;

/// Query process information
pub fn process_info(pid: ProcessId) -> Result<ProcessInfo, ProcessError>;

/// Set process priority
pub fn process_set_priority(pid: ProcessId, priority: Priority) 
    -> Result<(), ProcessError>;

Thread Management

/// Spawn a new thread
pub fn thread_spawn<F>(f: F) -> Result<ThreadId, ThreadError>
where
    F: FnOnce() + Send + 'static;

/// Join a thread
pub fn thread_join(tid: ThreadId) -> Result<(), ThreadError>;

/// Get current thread ID
pub fn thread_current() -> ThreadId;

Example: Process Creation

use vantis::process::{process_create, ProcessConfig, Priority};

fn spawn_worker() -> Result<ProcessId, ProcessError> {
    let config = ProcessConfig {
        name: "worker".to_string(),
        priority: Priority::Normal,
        memory_limit: 1024 * 1024 * 100, // 100MB
        cpu_affinity: vec![0, 1],
    };
    
    process_create(config)
}

---

File System API

VantisFS provides a Copy-on-Write filesystem with atomic updates and self-healing.

File Operations

/// Open a file
pub fn file_open(path: &Path, mode: OpenMode) -> Result<FileHandle, FsError>;

/// Read from a file
pub fn file_read(handle: FileHandle, buffer: &mut [u8]) -> Result<usize, FsError>;

/// Write to a file
pub fn file_write(handle: FileHandle, data: &[u8]) -> Result<usize, FsError>;

/// Close a file
pub fn file_close(handle: FileHandle) -> Result<(), FsError>;

/// Sync file to disk
pub fn file_sync(handle: FileHandle) -> Result<(), FsError>;

Directory Operations

/// Create a directory
pub fn dir_create(path: &Path) -> Result<(), FsError>;

/// List directory contents
pub fn dir_list(path: &Path) -> Result<Vec<DirEntry>, FsError>;

/// Remove a directory
pub fn dir_remove(path: &Path, recursive: bool) -> Result<(), FsError>;

Example: File I/O

use vantis::fs::{file_open, file_write, file_close, OpenMode};
use std::path::Path;

fn write_config(data: &[u8]) -> Result<(), FsError> {
    let path = Path::new("/etc/vantis/config.toml");
    let handle = file_open(path, OpenMode::Write)?;
    
    file_write(handle, data)?;
    file_close(handle)?;
    
    Ok(())
}

---

Security APIs

Vantis Vault API

Cryptographic operations with cascade encryption and quantum-resistant algorithms.

Encryption

/// Initialize Vantis Vault
pub fn vault_init(config: VaultConfig) -> Result<VaultHandle, VaultError>;

/// Encrypt data with cascade encryption
pub fn vault_encrypt(
    handle: VaultHandle,
    plaintext: &[u8],
    key: &Key
) -> Result<Vec<u8>, VaultError>;

/// Decrypt data
pub fn vault_decrypt(
    handle: VaultHandle,
    ciphertext: &[u8],
    key: &Key
) -> Result<Vec<u8>, VaultError>;

/// Generate secure random key
pub fn vault_generate_key(size: KeySize) -> Result<Key, VaultError>;

Key Management

/// Store key securely
pub fn vault_store_key(handle: VaultHandle, key: &Key, name: &str) 
    -> Result<(), VaultError>;

/// Retrieve stored key
pub fn vault_retrieve_key(handle: VaultHandle, name: &str) 
    -> Result<Key, VaultError>;

/// Destroy key (Panic Protocol)
pub fn vault_destroy_key(handle: VaultHandle, name: &str) 
    -> Result<(), VaultError>;

Example: Cascade Encryption

use vantis::vault::{vault_init, vault_encrypt, vault_generate_key, VaultConfig, KeySize};

fn encrypt_sensitive_data(data: &[u8]) -> Result<Vec<u8>, VaultError> {
    // Initialize vault with cascade encryption
    let config = VaultConfig {
        algorithms: vec![
            Algorithm::AES256,
            Algorithm::Twofish,
            Algorithm::Serpent,
        ],
        mode: EncryptionMode::Cascade,
    };
    
    let vault = vault_init(config)?;
    
    // Generate secure key
    let key = vault_generate_key(KeySize::Bits256)?;
    
    // Encrypt with cascade
    let ciphertext = vault_encrypt(vault, data, &key)?;
    
    Ok(ciphertext)
}

---

Authentication API

Multi-factor authentication and biometric support.

User Authentication

/// Authenticate user
pub fn auth_login(credentials: Credentials) -> Result<Session, AuthError>;

/// Logout user
pub fn auth_logout(session: Session) -> Result<(), AuthError>;

/// Verify session
pub fn auth_verify_session(session: Session) -> Result<bool, AuthError>;

/// Enable two-factor authentication
pub fn auth_enable_2fa(user: UserId, method: TwoFactorMethod) 
    -> Result<(), AuthError>;

Example: User Login

use vantis::auth::{auth_login, Credentials, TwoFactorMethod};

fn login_user(username: &str, password: &str, totp: &str) 
    -> Result<Session, AuthError> {
    let credentials = Credentials {
        username: username.to_string(),
        password: password.to_string(),
        two_factor: Some(TwoFactorMethod::TOTP(totp.to_string())),
    };
    
    auth_login(credentials)
}

---

Wraith Mode API

Privacy-focused operations for journalists and activists.

Wraith Operations

/// Enable Wraith Mode
pub fn wraith_enable(config: WraithConfig) -> Result<WraithHandle, WraithError>;

/// Disable Wraith Mode
pub fn wraith_disable(handle: WraithHandle) -> Result<(), WraithError>;

/// Check if Wraith Mode is active
pub fn wraith_is_active() -> bool;

/// Configure Tor routing
pub fn wraith_configure_tor(config: TorConfig) -> Result<(), WraithError>;

RAM-Only Mode

/// Enable RAM-only mode (no disk writes)
pub fn wraith_ram_only_enable() -> Result<(), WraithError>;

/// Disable RAM-only mode
pub fn wraith_ram_only_disable() -> Result<(), WraithError>;

Example: Activate Wraith Mode

use vantis::wraith::{wraith_enable, WraithConfig, TorConfig};

fn activate_privacy_mode() -> Result<WraithHandle, WraithError> {
    let config = WraithConfig {
        ram_only: true,
        tor_enabled: true,
        steganography: true,
        panic_protocol: Some(PanicConfig {
            trigger_password: "emergency".to_string(),
            action: PanicAction::DestroyKeys,
        }),
    };
    
    wraith_enable(config)
}

---

System APIs

Neural Scheduler API

AI-powered CPU scheduling for optimal performance.

Scheduler Configuration

/// Configure neural scheduler
pub fn scheduler_configure(config: SchedulerConfig) -> Result<(), SchedulerError>;

/// Set process priority hint
pub fn scheduler_set_hint(pid: ProcessId, hint: PriorityHint) 
    -> Result<(), SchedulerError>;

/// Query scheduler statistics
pub fn scheduler_stats() -> SchedulerStats;

/// Train scheduler model
pub fn scheduler_train(workload: WorkloadProfile) -> Result<(), SchedulerError>;

Example: Gaming Optimization

use vantis::scheduler::{scheduler_set_hint, PriorityHint};

fn optimize_for_gaming(game_pid: ProcessId) -> Result<(), SchedulerError> {
    // Give game maximum priority
    scheduler_set_hint(game_pid, PriorityHint::Gaming {
        target_fps: 240,
        latency_critical: true,
        cpu_affinity: vec![0, 1, 2, 3],
    })
}

---

Hardware Abstraction API

Sentinel provides sandboxed driver management.

Driver Management

/// Load a driver
pub fn driver_load(path: &Path, config: DriverConfig) 
    -> Result<DriverHandle, DriverError>;

/// Unload a driver
pub fn driver_unload(handle: DriverHandle) -> Result<(), DriverError>;

/// Query driver status
pub fn driver_status(handle: DriverHandle) -> Result<DriverStatus, DriverError>;

/// Restart crashed driver
pub fn driver_restart(handle: DriverHandle) -> Result<(), DriverError>;

Example: GPU Driver Management

use vantis::driver::{driver_load, DriverConfig};
use std::path::Path;

fn load_gpu_driver() -> Result<DriverHandle, DriverError> {
    let config = DriverConfig {
        sandboxed: true,
        auto_restart: true,
        restart_delay_ms: 500,
        max_restarts: 3,
    };
    
    driver_load(Path::new("/drivers/gpu.so"), config)
}

---

IPC API

Inter-Process Communication with zero-copy optimization.

Message Passing

/// Create IPC channel
pub fn ipc_create_channel() -> Result<(Sender, Receiver), IpcError>;

/// Send message
pub fn ipc_send(sender: &Sender, message: &[u8]) -> Result<(), IpcError>;

/// Receive message
pub fn ipc_receive(receiver: &Receiver) -> Result<Vec<u8>, IpcError>;

/// Close channel
pub fn ipc_close_channel(sender: Sender, receiver: Receiver) -> Result<(), IpcError>;

Example: Process Communication

use vantis::ipc::{ipc_create_channel, ipc_send, ipc_receive};

fn communicate_with_service() -> Result<Vec<u8>, IpcError> {
    let (sender, receiver) = ipc_create_channel()?;
    
    // Send request
    let request = b"GET_STATUS";
    ipc_send(&sender, request)?;
    
    // Receive response
    let response = ipc_receive(&receiver)?;
    
    Ok(response)
}

---

User Space APIs

Graphics API

Flux Engine provides Wayland compositor with HDR support.

Window Management

/// Create window
pub fn window_create(config: WindowConfig) -> Result<WindowHandle, GraphicsError>;

/// Show window
pub fn window_show(handle: WindowHandle) -> Result<(), GraphicsError>;

/// Hide window
pub fn window_hide(handle: WindowHandle) -> Result<(), GraphicsError>;

/// Set window title
pub fn window_set_title(handle: WindowHandle, title: &str) 
    -> Result<(), GraphicsError>;

Rendering

/// Begin frame
pub fn render_begin_frame(handle: WindowHandle) -> Result<FrameContext, GraphicsError>;

/// End frame
pub fn render_end_frame(context: FrameContext) -> Result<(), GraphicsError>;

/// Draw rectangle
pub fn render_rect(context: &FrameContext, rect: Rect, color: Color) 
    -> Result<(), GraphicsError>;

Example: Simple Window

use vantis::graphics::{window_create, window_show, WindowConfig};

fn create_app_window() -> Result<WindowHandle, GraphicsError> {
    let config = WindowConfig {
        title: "VANTIS App".to_string(),
        width: 800,
        height: 600,
        resizable: true,
        hdr: false,
    };
    
    let window = window_create(config)?;
    window_show(window)?;
    
    Ok(window)
}

---

Audio API

Low-latency audio with professional-grade support.

Audio Playback

/// Initialize audio system
pub fn audio_init(config: AudioConfig) -> Result<AudioHandle, AudioError>;

/// Play audio buffer
pub fn audio_play(handle: AudioHandle, buffer: &[f32]) -> Result<(), AudioError>;

/// Stop playback
pub fn audio_stop(handle: AudioHandle) -> Result<(), AudioError>;

/// Set volume
pub fn audio_set_volume(handle: AudioHandle, volume: f32) -> Result<(), AudioError>;

Example: Audio Playback

use vantis::audio::{audio_init, audio_play, AudioConfig};

fn play_sound(samples: &[f32]) -> Result<(), AudioError> {
    let config = AudioConfig {
        sample_rate: 48000,
        channels: 2,
        buffer_size: 512,
    };
    
    let audio = audio_init(config)?;
    audio_play(audio, samples)?;
    
    Ok(())
}

---

Network API

Zero-copy networking with Tor integration.

Socket Operations

/// Create TCP socket
pub fn socket_tcp_create() -> Result<SocketHandle, NetworkError>;

/// Connect to remote host
pub fn socket_connect(handle: SocketHandle, addr: SocketAddr) 
    -> Result<(), NetworkError>;

/// Send data
pub fn socket_send(handle: SocketHandle, data: &[u8]) -> Result<usize, NetworkError>;

/// Receive data
pub fn socket_receive(handle: SocketHandle, buffer: &mut [u8]) 
    -> Result<usize, NetworkError>;

Example: HTTP Request

use vantis::network::{socket_tcp_create, socket_connect, socket_send, socket_receive};
use std::net::SocketAddr;

fn http_get(url: &str) -> Result<Vec<u8>, NetworkError> {
    let socket = socket_tcp_create()?;
    let addr: SocketAddr = "93.184.216.34:80".parse().unwrap();
    
    socket_connect(socket, addr)?;
    
    let request = format!("GET / HTTP/1.1\r\nHost: {}\r\n\r\n", url);
    socket_send(socket, request.as_bytes())?;
    
    let mut buffer = vec![0u8; 4096];
    let size = socket_receive(socket, &mut buffer)?;
    buffer.truncate(size);
    
    Ok(buffer)
}

---

Developer Tools

Debugging API

/// Enable debug mode
pub fn debug_enable() -> Result<(), DebugError>;

/// Set breakpoint
pub fn debug_breakpoint(addr: usize) -> Result<(), DebugError>;

/// Get stack trace
pub fn debug_stack_trace() -> Vec<StackFrame>;

/// Log message
pub fn debug_log(level: LogLevel, message: &str);

Profiling API

/// Start profiler
pub fn profiler_start() -> Result<ProfilerHandle, ProfilerError>;

/// Stop profiler
pub fn profiler_stop(handle: ProfilerHandle) -> Result<ProfileReport, ProfilerError>;

/// Sample CPU usage
pub fn profiler_sample_cpu() -> CpuSample;

---

Examples

Complete Application Example

use vantis::prelude::*;

fn main() -> Result<(), Box<dyn std::error::Error>> {
    // Initialize kernel
    kernel_init()?;
    
    // Create window
    let window_config = WindowConfig {
        title: "VANTIS Demo".to_string(),
        width: 1024,
        height: 768,
        resizable: true,
        hdr: false,
    };
    let window = window_create(window_config)?;
    window_show(window)?;
    
    // Main loop
    loop {
        let frame = render_begin_frame(window)?;
        
        // Draw content
        render_rect(&frame, Rect::new(100, 100, 200, 200), Color::rgb(255, 0, 0))?;
        
        render_end_frame(frame)?;
    }
    
    Ok(())
}

---

API Versioning

VANTIS OS follows semantic versioning for all APIs:

• Major version: Breaking changes
• Minor version: New features, backward compatible
• Patch version: Bug fixes

Current API version: 5.0.0

---

Support

For API support and questions:

• 📧 Email: api-support@vantis.dev
• 💬 Discord: https://discord.gg/vantis
• 📚 Documentation: https://docs.vantis.dev
• 🐛 Bug Reports: https://github.com/vantisCorp/VantisOS/issues

---

Made with ❤️ by the VANTIS Team

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