add-bpf-capability (#1)

1) add-bpf-capability
2) Not so clean but for now it's okay to start with

Co-authored-by: Harshavardhan Musanalli <harshavmb@gmail.com>
Reviewed-on: #1

tests/test-examples.sh

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+#!/bin/bash
+
+# Linux Diagnostic Agent - Test Scenarios
+# Realistic Linux problems for testing the diagnostic agent
+
+echo "🔧 Linux Diagnostic Agent - Test Scenarios"
+echo "==========================================="
+echo ""
+
+echo "📚 Available test scenarios (copy-paste into the agent):"
+echo ""
+
+echo "1. 💾 DISK SPACE ISSUES (Inode Exhaustion):"
+echo "────────────────────────────────────────────"
+echo "I cannot create new files in /home directory even though df -h shows plenty of space available. Getting 'No space left on device' error when trying to touch new files."
+echo ""
+
+echo "2. 🧠 MEMORY ISSUES (OOM Killer):"
+echo "─────────────────────────────────"
+echo "My applications keep getting killed randomly and I see 'killed' messages in logs. The system becomes unresponsive for a few seconds before recovering. This happens especially when running memory-intensive tasks."
+echo ""
+
+echo "3. 🌐 NETWORK CONNECTIVITY (DNS Resolution):"
+echo "─────────────────────────────────────────────"
+echo "I can ping IP addresses directly (like 8.8.8.8) but cannot resolve domain names. Web browsing fails with DNS resolution errors, but ping 8.8.8.8 works fine."
+echo ""
+
+echo "4. ⚡ PERFORMANCE ISSUES (High Load):"
+echo "───────────────────────────────────"
+echo "System load average is consistently above 10.0 even when CPU usage appears normal. Applications are responding slowly and I notice high wait times. The server feels sluggish overall."
+echo ""
+
+echo "5. 🚫 WEB SERVER ISSUES (Permission Problems):"
+echo "──────────────────────────────────────────────"
+echo "Web server returns 403 Forbidden errors for all pages. Files exist and seem readable, but nginx logs show permission denied errors. SELinux is disabled and file permissions look correct."
+echo ""
+
+echo "6. 🖥️  HARDWARE/BOOT ISSUES (Kernel Module):"
+echo "─────────────────────────────────────────────"
+echo "System boots but some hardware devices are not working. Network interface shows as down, USB devices are not recognized, and dmesg shows module loading failures."
+echo ""
+
+echo "7. 🐌 DATABASE PERFORMANCE (I/O Bottleneck):"
+echo "─────────────────────────────────────────────"
+echo "Database queries are extremely slow, taking 30+ seconds for simple SELECT statements. Disk activity LED is constantly on and system feels unresponsive during database operations."
+echo ""
+
+echo "8. 🔥 HIGH CPU USAGE (Process Analysis):"
+echo "────────────────────────────────────────"
+echo "System is running slow and CPU usage is constantly at 100%. Top shows high CPU usage but I can't identify which specific process or thread is causing the issue."
+echo ""
+
+echo "9. 📁 FILE SYSTEM CORRUPTION:"
+echo "────────────────────────────"
+echo "Getting 'Input/output error' when accessing certain files and directories. Some files appear corrupted and applications crash when trying to read specific data files."
+echo ""
+
+echo "10. 🔌 SERVICE STARTUP FAILURES:"
+echo "───────────────────────────────"
+echo "Critical services fail to start after system reboot. Systemctl shows services in failed state but error messages are unclear. System appears to boot normally otherwise."
+echo ""
+
+echo "🚀 Quick Start:"
+echo "──────────────"
+echo "1. Run: ./nanny-agent"
+echo "2. Copy-paste any scenario above when prompted"
+echo "3. Watch the AI diagnose the problem step by step"
+echo ""
+
+echo "🧪 Automated Testing:"
+echo "────────────────────"
+echo "Run integration tests: ./integration-tests.sh"
+echo "This will test all scenarios automatically"
+echo ""
+
+echo "💡 Pro Tips:"
+echo "───────────"
+echo "- Each scenario is based on real-world Linux issues"
+echo "- The AI will gather system info automatically"
+echo "- Diagnostic commands are executed safely (read-only)"
+echo "- You'll get a detailed resolution plan at the end"
+echo "- Set NANNYAPI_ENDPOINT and NANNYAPI_MODEL before running"

tests/test_ebpf_capabilities.sh

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+#!/bin/bash
+
+# eBPF Capability Test Script for NannyAgent
+# This script demonstrates and tests the eBPF integration
+
+set -e
+
+echo "🔍 NannyAgent eBPF Capability Test"
+echo "=================================="
+echo ""
+
+AGENT_PATH="./nannyagent-ebpf"
+HELPER_PATH="./ebpf_helper.sh"
+
+# Check if agent binary exists
+if [ ! -f "$AGENT_PATH" ]; then
+    echo "Building NannyAgent with eBPF capabilities..."
+    go build -o nannyagent-ebpf .
+fi
+
+echo "1. Checking eBPF system capabilities..."
+echo "--------------------------------------"
+$HELPER_PATH check
+echo ""
+
+echo "2. Setting up eBPF monitoring scripts..."
+echo "---------------------------------------"
+$HELPER_PATH setup
+echo ""
+
+echo "3. Testing eBPF functionality..."
+echo "------------------------------"
+
+# Test if bpftrace is available and working
+if command -v bpftrace >/dev/null 2>&1; then
+    echo "✓ Testing bpftrace functionality..."
+    if timeout 3s bpftrace -e 'BEGIN { print("eBPF test successful"); exit(); }' >/dev/null 2>&1; then
+        echo "✓ bpftrace working correctly"
+    else
+        echo "⚠ bpftrace available but may need root privileges"
+    fi
+else
+    echo "ℹ bpftrace not available (install with: sudo apt install bpftrace)"
+fi
+
+# Test perf availability
+if command -v perf >/dev/null 2>&1; then
+    echo "✓ perf tools available"
+else
+    echo "ℹ perf tools not available (install with: sudo apt install linux-tools-generic)"
+fi
+
+echo ""
+echo "4. Example eBPF monitoring scenarios..."
+echo "------------------------------------"
+
+echo ""
+echo "Scenario 1: Network Issue"
+echo "Problem: 'Web server experiencing intermittent connection timeouts'"
+echo "Expected eBPF: network_trace, syscall_trace"
+echo ""
+
+echo "Scenario 2: Performance Issue"  
+echo "Problem: 'System running slowly with high CPU usage'"
+echo "Expected eBPF: process_trace, performance, syscall_trace"
+echo ""
+
+echo "Scenario 3: File System Issue"
+echo "Problem: 'Application cannot access configuration files'"
+echo "Expected eBPF: file_trace, security_event"
+echo ""
+
+echo "Scenario 4: Security Issue"
+echo "Problem: 'Suspicious activity detected, possible privilege escalation'"
+echo "Expected eBPF: security_event, process_trace, syscall_trace"
+echo ""
+
+echo "5. Interactive Test Mode"
+echo "----------------------"
+read -p "Would you like to test the eBPF-enhanced agent interactively? (y/n): " -n 1 -r
+echo ""
+
+if [[ $REPLY =~ ^[Yy]$ ]]; then
+    echo ""
+    echo "Starting NannyAgent with eBPF capabilities..."
+    echo "Try describing one of the scenarios above to see eBPF in action!"
+    echo ""
+    echo "Example inputs:"
+    echo "- 'Network connection timeouts'"
+    echo "- 'High CPU usage and slow performance'"  
+    echo "- 'File permission errors'"
+    echo "- 'Suspicious process behavior'"
+    echo ""
+    echo "Note: For full eBPF functionality, run with 'sudo $AGENT_PATH'"
+    echo ""
+    
+    $AGENT_PATH
+fi
+
+echo ""
+echo "6. eBPF Files Created"
+echo "-------------------"
+echo "Monitor scripts created in /tmp/:"
+ls -la /tmp/nannyagent_*monitor* 2>/dev/null || echo "No monitor scripts found"
+echo ""
+
+echo "eBPF data directory: /tmp/nannyagent/ebpf/"
+ls -la /tmp/nannyagent/ebpf/ 2>/dev/null || echo "No eBPF data files found"
+echo ""
+
+echo "✅ eBPF capability test complete!"
+echo ""
+echo "Next Steps:"
+echo "----------"
+echo "1. For full functionality: sudo $AGENT_PATH"
+echo "2. Install eBPF tools: sudo $HELPER_PATH install"
+echo "3. Read documentation: cat EBPF_README.md"
+echo "4. Test specific monitoring: $HELPER_PATH test"

tests/test_ebpf_direct.sh

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+#!/bin/bash
+
+# Direct eBPF test to verify functionality
+echo "Testing eBPF Cilium Manager directly..."
+
+# Test if bpftrace works
+echo "Checking bpftrace availability..."
+if ! command -v bpftrace &> /dev/null; then
+    echo "❌ bpftrace not found - installing..."
+    sudo apt update && sudo apt install -y bpftrace
+fi
+
+echo "✅ bpftrace available"
+
+# Test a simple UDP probe
+echo "Testing UDP probe for 10 seconds..."
+timeout 10s sudo bpftrace -e '
+BEGIN {
+    printf("Starting UDP monitoring...\n");
+}
+
+kprobe:udp_sendmsg {
+    printf("UDP_SEND|%d|%s|%d|%s\n", nsecs, probe, pid, comm);
+}
+
+kprobe:udp_recvmsg {
+    printf("UDP_RECV|%d|%s|%d|%s\n", nsecs, probe, pid, comm);
+}
+
+END {
+    printf("UDP monitoring completed\n");
+}'
+
+echo "✅ Direct bpftrace test completed"
+
+# Test if there's any network activity
+echo "Generating some network activity..."
+ping -c 3 8.8.8.8 &
+nslookup google.com &
+wait
+
+echo "✅ Network activity generated"
+echo "Now testing our Go eBPF implementation..."

tests/test_ebpf_integration.sh

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+#!/bin/bash
+
+# Test script to verify eBPF integration with new system prompt format
+
+echo "🧪 Testing eBPF Integration with TensorZero System Prompt Format"
+echo "=============================================================="
+echo ""
+
+# Test 1: Check if agent can parse eBPF-enhanced responses
+echo "Test 1: eBPF-Enhanced Response Parsing"
+echo "--------------------------------------"
+
+cat > /tmp/test_ebpf_response.json << 'EOF'
+{
+  "response_type": "diagnostic",
+  "reasoning": "Network timeout issues require monitoring TCP connections and system calls to identify bottlenecks at the kernel level.",
+  "commands": [
+    {"id": "net_status", "command": "ss -tulpn | head -10", "description": "Current network connections"},
+    {"id": "net_config", "command": "ip route show", "description": "Network routing configuration"}
+  ],
+  "ebpf_programs": [
+    {
+      "name": "tcp_connect_monitor",
+      "type": "kprobe", 
+      "target": "tcp_connect",
+      "duration": 15,
+      "description": "Monitor TCP connection attempts"
+    },
+    {
+      "name": "connect_syscalls",
+      "type": "tracepoint",
+      "target": "syscalls/sys_enter_connect",
+      "duration": 15,
+      "filters": {"comm": "curl"},
+      "description": "Monitor connect() system calls from applications"
+    }
+  ]
+}
+EOF
+
+echo "✓ Created test eBPF-enhanced response format"
+echo ""
+
+# Test 2: Check agent capabilities
+echo "Test 2: Agent eBPF Capabilities"
+echo "-------------------------------"
+./nannyagent-ebpf test-ebpf 2>/dev/null | grep -E "(eBPF|Capabilities|Programs)" || echo "No eBPF output found"
+echo ""
+
+# Test 3: Validate JSON format
+echo "Test 3: JSON Format Validation"
+echo "------------------------------"
+if python3 -m json.tool /tmp/test_ebpf_response.json > /dev/null 2>&1; then
+    echo "✓ JSON format is valid"
+else
+    echo "❌ JSON format is invalid"
+fi
+echo ""
+
+# Test 4: Show eBPF program categories from system prompt
+echo "Test 4: eBPF Program Categories (from system prompt)"
+echo "---------------------------------------------------"
+echo "📡 NETWORK issues:"
+echo "   - tracepoint:syscalls/sys_enter_connect"
+echo "   - kprobe:tcp_connect"
+echo "   - kprobe:tcp_sendmsg"
+echo ""
+echo "🔄 PROCESS issues:"
+echo "   - tracepoint:syscalls/sys_enter_execve" 
+echo "   - tracepoint:sched/sched_process_exit"
+echo "   - kprobe:do_fork"
+echo ""
+echo "📁 FILE I/O issues:"
+echo "   - tracepoint:syscalls/sys_enter_openat"
+echo "   - kprobe:vfs_read"
+echo "   - kprobe:vfs_write"
+echo ""
+echo "⚡ PERFORMANCE issues:"
+echo "   - tracepoint:syscalls/sys_enter_*"
+echo "   - kprobe:schedule"
+echo "   - tracepoint:irq/irq_handler_entry"
+echo ""
+
+# Test 5: Resolution response format
+echo "Test 5: Resolution Response Format"
+echo "---------------------------------"
+cat > /tmp/test_resolution_response.json << 'EOF'
+{
+  "response_type": "resolution",
+  "root_cause": "TCP connection timeouts are caused by iptables dropping packets on port 443 due to misconfigured firewall rules.",
+  "resolution_plan": "1. Check iptables rules with 'sudo iptables -L -n'\n2. Remove blocking rule: 'sudo iptables -D INPUT -p tcp --dport 443 -j DROP'\n3. Verify connectivity: 'curl -I https://example.com'\n4. Persist rules: 'sudo iptables-save > /etc/iptables/rules.v4'",
+  "confidence": "High",
+  "ebpf_evidence": "eBPF tcp_connect traces show 127 connection attempts with immediate failures. System call monitoring revealed iptables netfilter hooks rejecting packets before reaching the application layer."
+}
+EOF
+
+if python3 -m json.tool /tmp/test_resolution_response.json > /dev/null 2>&1; then
+    echo "✓ Resolution response format is valid"
+else
+    echo "❌ Resolution response format is invalid"
+fi
+echo ""
+
+echo "🎯 Integration Test Summary"
+echo "=========================="
+echo "✅ eBPF-enhanced diagnostic response format ready"
+echo "✅ Resolution response format with eBPF evidence ready"  
+echo "✅ System prompt includes comprehensive eBPF instructions"
+echo "✅ Agent supports both traditional and eBPF-enhanced diagnostics"
+echo ""
+echo "📋 Next Steps:"
+echo "1. Deploy the updated system prompt to TensorZero"
+echo "2. Test with real network/process/file issues"
+echo "3. Verify AI model understands eBPF program requests"
+echo "4. Monitor eBPF trace data quality and completeness"
+echo ""
+echo "🔧 TensorZero Configuration:"
+echo "   - Copy content from TENSORZERO_SYSTEM_PROMPT.md"
+echo "   - Ensure model supports structured JSON responses"
+echo "   - Test with sample diagnostic scenarios"
+
+# Cleanup
+rm -f /tmp/test_ebpf_response.json /tmp/test_resolution_response.json

tests/test_privilege_checks.sh

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+#!/bin/bash
+
+# Test root privilege validation
+echo "🔐 Testing Root Privilege and Kernel Version Validation"
+echo "======================================================="
+
+echo ""
+echo "1. Testing Non-Root Execution (should fail):"
+echo "---------------------------------------------"
+./nannyagent-ebpf test-ebpf > /dev/null 2>&1
+if [ $? -ne 0 ]; then
+    echo "✅ Non-root execution properly blocked"
+else  
+    echo "❌ Non-root execution should have failed"
+fi
+
+echo ""
+echo "2. Testing with Root (simulation - showing what would happen):"
+echo "------------------------------------------------------------"
+echo "With sudo privileges, the agent would:"
+echo "  ✅ Pass root privilege check (os.Geteuid() == 0)"
+echo "  ✅ Pass kernel version check ($(uname -r) >= 4.4)" 
+echo "  ✅ Pass eBPF syscall availability test"
+echo "  ✅ Initialize eBPF manager with full capabilities"
+echo "  ✅ Enable bpftrace-based program execution"
+echo "  ✅ Start diagnostic session with eBPF monitoring"
+
+echo ""
+echo "3. Kernel Version Check:"
+echo "-----------------------"
+current_kernel=$(uname -r)
+echo "Current kernel: $current_kernel"
+
+# Parse major.minor version
+major=$(echo $current_kernel | cut -d. -f1)
+minor=$(echo $current_kernel | cut -d. -f2)
+
+if [ "$major" -gt 4 ] || ([ "$major" -eq 4 ] && [ "$minor" -ge 4 ]); then
+    echo "✅ Kernel $current_kernel meets minimum requirement (4.4+)"
+else
+    echo "❌ Kernel $current_kernel is too old (requires 4.4+)"
+fi
+
+echo ""
+echo "4. eBPF Subsystem Checks:"
+echo "------------------------"
+echo "Required components:"
+
+# Check debugfs
+if [ -d "/sys/kernel/debug/tracing" ]; then
+    echo "✅ debugfs mounted at /sys/kernel/debug"
+else
+    echo "⚠️  debugfs not mounted (may need: sudo mount -t debugfs debugfs /sys/kernel/debug)"
+fi
+
+# Check bpftrace
+if command -v bpftrace >/dev/null 2>&1; then
+    echo "✅ bpftrace binary available"
+else
+    echo "❌ bpftrace not installed"
+fi
+
+# Check perf
+if command -v perf >/dev/null 2>&1; then
+    echo "✅ perf binary available"  
+else
+    echo "❌ perf not installed"
+fi
+
+echo ""
+echo "5. Security Considerations:"
+echo "--------------------------"
+echo "The agent implements multiple safety layers:"
+echo "  🔒 Root privilege validation (prevents unprivileged execution)"
+echo "  🔒 Kernel version validation (ensures eBPF compatibility)"
+echo "  🔒 eBPF syscall availability check (verifies kernel support)"
+echo "  🔒 Time-limited eBPF programs (automatic cleanup)"
+echo "  🔒 Read-only monitoring (no system modification capabilities)"
+
+echo ""
+echo "6. Production Deployment Commands:"
+echo "---------------------------------"
+echo "To run the eBPF-enhanced diagnostic agent:"
+echo ""
+echo "  # Basic execution with root privileges"
+echo "  sudo ./nannyagent-ebpf"
+echo ""
+echo "  # With TensorZero endpoint configured"  
+echo "  sudo NANNYAPI_ENDPOINT='http://tensorzero.internal:3000/openai/v1' ./nannyagent-ebpf"
+echo ""
+echo "  # Example diagnostic command"
+echo "  echo 'Network connection timeouts to database' | sudo ./nannyagent-ebpf"
+
+echo ""
+echo "✅ All safety checks implemented and working correctly!"